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IZ:NDA, APRIL 9, 1976 TELEPHOIVE NO.: 456-2274
; ANE, COUNTY PLANiNING COiMISSIO~y
-_me : I'ric.iay, April 9, 19761 9:30 A.I,:.
Conference Room A, County Court riou;;e AI-LI1tX
(Use Mallon Avenue entrance)
Si~.;IV ±_SIO,; Al';D ZQ~~~k~ CLASSIFIGATTON UPGiRADII;(; -
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7,.
e Fami-i
. _ ,
I . , , Sectior.
The NE 1/4 of Section 3
. Sponsor: Robert Tomlinson
'.~,.~st 606 Thixd Avenue
r, ,okane, Washington 99204
:..<<,_.:;:~~:•.,: Cliarence E. Simpson Engiteers, Inc. North 909 Argonne Road
Spokane, Washington 99206
Site Size: 160 acres f`{O
. Number of Lots: 432 1-1/; .
Land use proposed by sponsor: Single family dwellings
Existing Zoning: Agricultural, eistablished April 11, 1907
Advertised Zone Upgrading: Single Family Residential (R-1)
. Water Source: Model Irrigation Compariy
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BOARD OF COUNTY COMMiSSIONERS OF SPOKANE COUNTY, WASHINGTON
FINDINGS AND ORDER REGARDING CHANGE OF CONDITION OF PREVIOUSLY APPROVED PLAT,
PE-1002-76, MIDILOME ADDIT,ION '
~
WHEREAS, The Board of County Commissioners did, pursuant to its own motion,
~ conduct a public hearing on December 11, 1978, to reevaluate approval of a Change
~
of Condition from individual,on-site sewage disposal system to a public sewage ,
system for the previously approved plat known as Midilome Addition (Fi,le Number ~
PE-1002-76), and, I
WHEREpS, At said hearing opportunity was afforded those favoring and those
oppos,ing the above-described Change of Condition proposal,the Board of County
Commissioners of Spokane County, having fully considered the testimony given, the
past records and minutes, the Environmental Impact Statement relating to sa,id project
~
as stipulated by court order, and all other evidence presented, and further having
i
personally acquainted themselves with the site and vicinity in question, does hereby Iuphold its Findings adopted on December 1, 1978, by Resolution ti0 77-1394, and,
NOW, THEREFORE, The 8oard of County Commissioners does conclude that the I
Change of Condition to a public sewage system for the plat known as Midilome Addition
should be and is hereby approved, PROVIDED this approval shall be subjett to the
approval of all other state, federal and local agencies with jurisdiction
DATED THIS L3 DAY OF _ 19_'V&.
BOARD OF COUNTY COMMISSIONERS '
OF SPOKANE COUNTY, WASHINGTON
..t •
RAY W. CHRtSTEHSEN, CNM.
lERRY C KOPET
MARRY M lARNED
ATTEST VERNON W. OHLAND ~
Clerk of Board
By
~
o ~
~
~
i
~
~
~ f
BEFORE THE BOARD OF COUNTY COMMISSIONERS OF SPOKANE COUNTY, WASNINGTON
IN THE MATTER COPJCERNING THE )
REEVALUATiON OF A CHANGE iN )
CONOITIONS OF A PREVIOUSLY ) COMMISSIONERS' DECISION
APPROVED PLAT - PE-1002z76, ~
MIDILOME Sponsor-Tomlinson )
This being the time set by the Board of County Commissioners of Spokane
County, Washington to render its decision after reevaluation of a change
in eonditions of a previously approved plat, having considered same after
receiving an Environmental Impact Statement relating to said project, as
stipulated by court order, and
The Board having conducted a public hearing on its own motion on December 11,
1978, to reevaluate its approval of a change in condition f rom individual
on-site sewage disposal systems to a public sewage system, and
The Board having visited the site, reviewPd the testimony and being fully
advised in the premises did determine, based upon the testimony submitted
at the public hearing and other evidence available to the Board to uphold
it Findings adopted on December 1, 1'978, by Resolution No 77-1394,
PROVIDED, this approval shall be subject to the approval of all other
state, federal and local agencies with jurisdiction.
The Board instructed the Planning Staff to prepare Findings and Order,
for execution by the Board at a subsequent meeting, setting forth more
definitively the Board's action in this matter
BY ORDER OF THE BOARD this 29 day of January, 1979
~
VERNON 4! OH - C1 rk,of ttre ard
.
by
os nne Montague, Deputy erk
~
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~ 77 13948
T3AARD OF COLINTY C0MISSI0NERS OF SPOKANE COUNTY, WASI3INGTOrT
FINDINGS AND ORDER REGARDING A CHANGE IN CONDITIOIl1S IN PE-1002-76,
MIDILOME ADDITION
IMEREAS, the Baard of County Commissioners did, after
public izearing on April 7, 1977, approve the final plat of PE-
1002-65, Midilome Addition; and
tIHEREAS, a condition of approval regarding this
plat authorized the use of individual on-site sewage dis-
posal systems; and
j•MEEtEAS, the plat sponsor, Robert Tomlinson, cla,d
by letter request that the &oard of County Commissioners con-
duct a hearing to consider the request of the plat sponsor
to install a public sewage system to serve the subdivision;
and
WHEREAS, the noard of County Cornmissioners did holcl
a public hearing on September 8, 1977, to consider the request
of the applicant, objectors, and other interested parties,
and
WHEREAS, at said hearing opportunity was afforded
those favora.ng and those opposing the above described change
in conditions, the Board of County Commissioners of Spokane
County having fully considerec3 the documents, reports and testi-
mony given, the environmental review, and all other evidence
presented and having personally acquainted themselves with
the site and vicinity in question;
PIOW, THEREk'ORE, the Board of County Conunissioners
daes hereby conclude that the change in condition to a
public sewer system would be an upgrading from the individual
systems previously approved; that the public sewer system
will not have more than a moderate effect on the environ-
ment abpve that of the use of individual on-site sewage
c3isposal systems; that a declaration of non-significance
should be issued; that the change of condition allowing
J v {
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a public setv,er system should be and is hereby approved
subject to the following conditions:
1. ihat the plat sponsor obtain all necessary approvals
from the Department of Ecology, the Department of
_ Social and Health Services, the Spok ane County
Health District, the Spokane County Engineer's
and al-1 other agencies and/or departments of
jurisdiction.
2. That the developer file with the County Auditor an
amended plat dedication that shall include the
following statement:
A public sEwer system acceptable to County
and State I-iealth Authorities will be made
available for this plat, and inclividual sewer
service will be provicled prior to occupancy.
3. The plat dedication shall specifically exclude those
lots not sewered.
The Chairman is hereby authorized to sign a final
declaration of Non-Significance.
DATED this ~ day of A42k/&1977.
BOARD OF COUNTY COM.MISSIONER'S
OF SPOKANE COUNTY, WASHINGTON
Iftur
iti(RY .
WRy M. LARfVED
RpY W.
ATTEST :
VERNON W. D
Clerk of e Boar
BY -
D uty
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77 127'
BEFORE THE BOARO OF COUNT'Y COMMISSIONERS OF SPOKANE COUNTY, WASHINGTON
PE-1002 -76 MI DI LOME ADO )
ZE-34-76, AGRICULTURE TO ~ R E S 0 L U T I 0 N
SINGLE FAMILY RESIDENTIAL• )
ROBERT TOMLINSON. SPONSOR )
IrIftERI'.AS, the Board o£ County Commissioners di.d at a public rieax xng
on 9/15/77, authorize the Chairman of the Board of County Commissa.oners
to xssue aproposed declarAtion of nonsignificance regarding the change
in conditians zn regards to PE-1002-76, Midilome Add-ition, and
infliERF.AS, the proposed declaration of nonsignificance was llsted in
the SEPA Public Informatian Center on September 22, 1977 and pursuant to
WAC 197-10-340 (4) copLes of the,deterrnination and explanation tllereof
were mailed to a.ll other agencies wa. th jurisdiction, and
WHMZFAS, ti,rritten comment, have been received regarding the issuance
o f a proposed decl ar ation o.C nonsi gni fi cance and WAC 197-10-340 (5) ~
~
obligatadthe lead agency to reconsider its proposed declaration of non-
51gl1f1Cc3riCe in light of Lriese comrnents, and
WH~,,REAS, the Board or County Commissioners has reviewed the testimony
previously gzven, the records aia.d minutes oF previous hearings, the ~
,
various envitonmental documents, the sf,atements and questions submitt,eci
with the request for reconsa.deratxon and subsequent staff respoases to
such statemEnts and questlons and all other evidence presented does
hereby find that a Plnal declaratian of nonstgnificance should be lssued.
NOW, ~~URE, tlie Board oi County Com►nissioners does direct its
Chairman to issue a fxnal declaration of nonsignificance.
DATTD THIS day o f 19 .
BOA OF CQUNTY COMP41SSIONERS
ATTEST
~
.
MIDILOME INCORPORATED
W 606 Third Avenue
,
Spokane, Washington
99204 =
~
December 15, 1977
Spokane County Planning Commission
Spokane County Court House
N. 8111 Jefferson
Spokane, Washington
Attention. Bob Bethards
Dear Bob•
This is to inform you that we have filed an applicati,on for
preliminary approval of our plat even though we feelthat preliminary
approval has already been given Your office and council has taken
the stand that prdiminary approval was not given. This letter is to
notify you that our application is made under protest and that we are
going to attempt to instate a decision based on the fact that we had
preliminary approval in April of 1976 and that we extended that approval
in March of 1977 With this in mind, we wish to continue the develop-
ment of our project so we do file the preliminary plat as indicated by
your department, but we also do so with the understanding that should
we be able to get a decision fom a higher authority that in fact we
did have preliminary approval in April of 9176 of the entire plat then
we shall withdraw this application Qn that basis
Please understand that this protest is made without malice and is
merely an attempt on our part to expedite a s7tuation that has become
increasingly bogged down in pro'blem fter problem.
~
f Yo s very truly,,
.
Robert H. Tomlinson
Secretary
Midilome, Inc
RHTmb
R E C E I myR E
QEC 151977
SPOKANE COUNTY
PLANNING DEPARTMENT
y
~
~
J-
SPOKANE COUNTY HEALTH DISTRICT
yr
Inter-Off1 ce Communication
q~~y p`S1
Date' November 2, 1977 _
T0: Mr. Robert Bethards, Spoltane County Planning Department
FROM: Eugene C. Prather, K.S. el'
SUBJECT• Sewerage for Midilome Addition and First Addition
1. Reference you.r question of whetIzer this office regards sewering for the
subject plats an upgrade over tile use of individual on-site disposal systems.
2. Factors to consider.
a. "These criteria (for safe disposal of all human and domesCic wastes,
ed.) can best be met by the discharge of domestic sewage to an ade-
' quate publie or community sewerage system." Fage 1, Manual of Septic
Tank Practice, Public Aealth Service, U.S. Department of HEt+1, 1967.
Technical knowledge fs improviag and some serious doubts may be east
today on the universal vatidity of ttte preceding statement. However,
most authorities responsfble for planning sewage disposal still re-
gard the statement as valid and recommend the use of public sewage
systems when the projects are of sufficient size to be economically
feasible.
b• In the case of the subject systems, the Department of Ecolog}► (D0E) and De-
partment of Socfal and Health Services (nSHS) have approved the collection
and treatment spstems. ~.`hese aPprovals are consistent «ith the standards
and practices of those agencies. The curren.t plans for the drainfield are
or will be consistent caith criteria based on e.xperience of the Spokane
County Engineer in the aTea in similar soils.
c. The economics of sewering small communities during initial development versus
using individual systems is addressed by the sponsor of the Midilome projec t
(letter attached). James F. Hudson (Environmental Imuact of On-Site Systems,
Less Costly Wastewater ZYeatmene Systems for Sma11 Connnunities, USEPA, 1977)
states In areas where on-site systems fail, in new developments, or in
areas where the on-site systems simply need replacement, the economics are
much closer". (He caas comparing costs of sewers versus on-site systems. )
' Both of the foregos.ng conclude that sewering af ter the completion of initial
development is more costly to the home-owner.
3• In view of tre above, this office regards the use of sewers in these plats as
an upgrade from use of indxvidual systems.
Enclosure
cc: Mr. Robert Thomlinson
West 606 Third Avenue
Spokane, WA 99204
SCHD-ADM-118
S
i ~
Novernber 1, 1977
Spokane County
~ Nealth Uistrict
ATTENTION Gene Prather
ECONOMIC IMPACT ON HOhiEOWNER
OF SEPTIC TANKS VS. PACKAGE SEWAGE TREATMENT
1 tnitial Cost
On a project the size of Midilcme the initial cost charged against a new
hame for eitlier type of sys ten is virtua 11y the same
2 Basement Baths
Nomes having ordinary full baserQnts completely in the ground have z
handicap when it comes to base7~ento baths, if they are on septic tan!<s
The sewer line going to the sep~ic tank is half-way up the basement wall
and this necessitates a pump up `acility in the basement with an installed
cost of approxirnately $700.00 (Kohler, Tower, UniteO This facility
consists of a holding tank and pump Over a period of years the pump
woyld need maintenance and/or replacement at an additional cost.
Homes on the sewer (which is deeper than the basement floor) can hook up
to the sewer from a basement bath with no additional cost.
3 Useability
Homes on septic tanks on ordinary lots are restricted in the use of lots
because of the drainfield Nothing such as swimming pools, tennis courts,
patios, storase buildings, etc can be built over the septic tank and
drainfield which occupies apprcximately 58% of the unused portion of tMe
land The home on the sewer systQm has use of all the unused land.
4 Taxes
Approximately 34% of the lot is used for drainfield and septic tank. Thus
on a$6,500 lot, 34% of the value ($2,210.00) can be assigned to cost for se-
wage, which is not the case in the use of sewage treatment plants. To continue
with this thought, the real estate taxes attributable to the land wouid be
$149.04 and 34% of that amount is equal to $50 67 per year for the drainfield
For whatever length of time the drainfield remains this tax would continue en
a yearly basis.
5 Ongoing costs
The current mvnthly charge far a sewer system's maintenance and operation ss
$5 50 per home The monthly costs for a septic tank are none However, septic
tanks must be pumped periodically and generally need to be replaced abQUt
every 12 - 15 years The cast of replacemert will vary greatly, depending on
the landscaping and accessibility of the existing tank and drainfield. A good
estimation would be $1,250.00 and include replacement of lawn, etc.
1
~
Spokane County Nealth District Page 2
6 Uifference if a major trunk line were installed at a later date within
connec"ting distance of the project.
There are a multitude of items to consider when looking at the cost of
installing sewer lines and individual home connections on already developed
streets (In the case of homes on septic tanks.) One engineer, Mike
Kennedy, estimated $30 00 per linear foot for the cost of a sewer line
with stub ins to the property line Th,is price would include all costs
including pavement replacement In addition to these costs, the home-
owner would be faced with the,cost of running the sewer line from his
existing plumbing to the stub in at his property line $8.00 per foot
is the approximate cost of this connection. 60 feet would be a good
estimate of the amount of line needed. It would appear that each home-
owner would have a cost of something in the neighborhood of $1800.00
Consider a project of 410 lots @$1800 00 each -$738,000 cost to the
homeowners
blith a pac!<ac» p1ant these coses are avoided completely because the
collection sysaem is already 3n the ground
As the developer of the project, we feel that there is absolutely no doubt
that the homeowners in this project are greatly benefited by the existence
of a sewer systern as opposed to sept7c tanks, and this ts the reason we pro-
pose having such a facility.
You r~ very truly, 1
1 r
~
~=~'~lJ t ~ ~ ~ • , L ~f~ ~j~l
ROBERT H. TOMLINSON
hlidilome, Inc
RNT/ks
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a! COUN1Yr 3NMJ~~S~~d/Y~R~ , 1' J ' 1*3
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RAY W CHRISTENSEN HARRY M LARNED JERRY C KOPET
~
First Oistrict Second District Third Distnct
SPOKANE, WASHINGTON 99201
October 21, 1977 ~
Mrs. Joan Honican
S 3904 Bowdish Road
Spokane, WA 99206
Dear Mrs Honican
We have received your communication regarding the Midilome Sewage
Treatment Plant and have referred this to our Planning Department
We have requested them to investigate the matter and then to
answer directly to you.
Very truly yours,
~
J r C ope , Chairman
6q_ard of County Commissioners
of Spokane County, Washington
el
cc Planning Department
.
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~ L~ ~:.U
~ OctoUer 18. 1977 1977
.
T0: Spokane County Commissioners
FgOTI i Joan rionican
REa Violation of the SEPA process. Even though we are still in the xeconsideration sta.ge of the 3~,'Pr1 process and
you ha.ve not as yet issued a":'inal" Statement of Pion-Si?nificance, work has
begun once again (Oct. 17) on the rlidilome sewage treatment plant.
There has also heen no approval given to this pro3ect by the Depta of Ecology
as required by RCW 90,48,110 and RCw 90.48.162.
Since the County is the lead a;ency in this matter will you please tell me,
xn arritin~, how you intend to see that all appropriate laws are complied with
in regards to the fnstallation of this plant?
Thank you,
,
Joa.n Nonican
S. 3944 3owdish Rd.
Spoka.ne, wA 99206
9/ 171
~
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SPOHANF COIINTY PLAYNING GOMbiISSIM4
~ .
PUBIIC WORdS BU{LDING N.81t JEFFEaSON STREET
• ~r 1~'S ~ • ~s, ~ + ~ Ly PHONE 456-2274
SPOKANE WASHINGTON 99201
- a
SQOKAMC GOUh-Y CoURT NoUsE O ctober 19 , 1977
M E M O R A N D U M
TO: Lee ~Mellish
Bill Dobratz
Rhys Sterling
Tom justus
Mike Kennedy, Liberty Lake Sewer Distnct
FROM: Fred L. Dayharsh
SUBJECT: Sewer Procedural Policy Developmen t.
Per our mzmo of OCtober 6, 1977, and attached correspondence, a
meeting wxll bp held to accomplish the followinq objectiLves:
~
1) ; Identify pcocedural problems being encountered.
2) Each agency representative discuss his agency responsibilfties and
procedures.
3) Propose specifiLc ways in which procedural needs can be met.
Time: Wednesday, OcCober 2 6th at Z: 00 P. M.
~ Place: Room 320 in the Health District Buxlding,.
~ F.L.D.
FLD:cmw
cc: Commissioner jerry Kopet
Tom D3vis
Bob Bethards ~
~ s
(UC)2
OCT 6 1977
'J .Tcr:J fn-, }I.], ^o~--iMy rn{,~;%1-3 ,:Lar,erza _SPOKAPIE COUPITY
I ?c:At; ,TC„r G'r1LC311 PLAPiPlING DEPAIZTPAEMT
i,. TflrtS1`Jla ;c t.Ermir1i4t~-n Of rf]fl-;:anl~l
f.'31''
:r :T> c•h~ulr: ~'ir: ?"2?taiZ'F ion tne 17^, CD0 ;p3 secoriaz Jtrz3t~erit pltint pre: ~,O;,a1
'er the Su iali vision at 40th 3rr~. 1-404dish, acc~urdin; to all inrorrz! iun
T°ve rzceivei, the 5po4zne (:ounty Canmissionars stztemea,, O° t;on-sYr,nf FicJnce is
: zl-ed tspon their refu: 31 to raco;r.ize d3t3 to the contrary.
.
= or the recore. I°m 3t+.3ching infor,n3tion submitted to a 9/13/77 ra-nea_ir.r
(b=:rore the ^oirty Cam-nissioners), their responses date3 9113 and 9/4114 and
my reiautta.l to their responses submitted 9/15/77,
To supcort ny Dwition th3t there xill be significant degeadation oc praundwater
and other ne-r-ttati e environment,a.l inpacts, I of fer the following---
1) :he F13nto when complete, aill disehar;e 170o000 gu1 into a drainfield
considerably sMaller th3n the total linear feet requirzd for irdividi:al sub-
surFace dispos3l o° samA 400+ homes,
2) The C'velt-Saxton reoort d:.ne Dec. 064 for the CiLy of Spoka,r.a states-
"The vertical distance rrom con`.,aniin.3.tin3 point to the w3ter t3ble has no oreat '
si,nificance in the case of chamical cont.3min.ants, especially when large qua:ntities
of flushing u3ter arz involved."
3) ihE plant bzing
ins talled Frovldes only secorid3xy treatment an3 Kould not
be acceptable if disch3r3in~ to a ~urface watzr. ~~fashin~;ton state has no Stan3ards
f or groundaater hut tf:ei e is a gzneral ch3rge in RC►,f 90.48 to prot-ect a1Z waters
of the state °rom pollution. ilutrients and rathogans will not Z.e removed fron
this erfluent,
4) Construction UrecPded approval and adjaCent property owners, were put in
the position of apticzdling their case to those who allaueii tne illsj3l construction
to occur. No "diie process" or "appaazance of fa.irneas" was available when the
develoner Was already lockeci ln to a j110.000 contmct for the un3pproved p13nt.
"he final Flzt had been approved ar.d ciled for $eptic tanks an3 property ounei-s
wPre never notiFied there had been a ma jor ch3nge of "Con-dition°". Fy requ-.st fer
3Plan Commission rehearing Kas denied.
5) The ~ ounty h.is not applie3 f or a~:3s te Disch3roe Pernit as required in
Rrw go.48.162. Veither do they h3ve permits for the other 11 systems they opezate,
6) The Dept. of EcoloQy refuses to comply with RCil 90,43,110e
7) There are no built in re3sonable sigety features, such as retractaole
;ratln; or .cre,1>nin;, to prevent a.ccess by czils~ren. ~'he pi3nt consists o_° 12 feet
0 r opsq seN3 ;t, ur,3 ttended ando aith only a cadar fence surrcurdin~ i±.
8) Spokane ^ounty has not b2en complying Kith RU 58,17.160.
A report done I0/8/62 on Spok3ne Valley Groun3Nater Pollution slioti:ed
' bacteria prpsent at 47° and Alkyl aenzane Sulfo.►ate (A3S) at 90° and testing
' xas atn dr3in,"ields of only 12-15, 000 =pde Testing x3s done in the late sumnar when
school drainFields had not been in use for seva:al nonths and little tf any
rainf'a21 to saturate the testinr; area. iJevestheless, ba.cteria Were thriving in
considerabte numbers. To find con+3minatiQZ 3t such depthse under those circum-
stances, c3n only lea3 us loggic311y to one conclusion. With only 801 of extremely
, permeable soil between our static Water lPVel and the 170,000 gpd drainfield
, therA uill be extensive p.enetration and gross contamir3tion,
~ 10) A later "Crosby Report" f.ound b3sic311y the sarr,e thirgs as the 062 study
but a~ain. all tPSting was done durino droujht conditions and hi~;h volume dis-
charge dr3inrields Were avoided.
ii) The more recent °'Todd Report" determined ue are pollut3ng our sole-source
aqu3fPr and I Submit Ke nimb pollute most quickly and extensively in such areas as
Mi? 1lome,
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C'E-hi:Y' @!'tYi?"On'U,1t3l GOnC22'C15 Y~ot pz'o-c6?"l3t ar33ress°d ~Tr---
c'i.) o 1',e
"10 Gjo:c and bu°~er zon-s
c} l~aeq~.3cy o° Spo~c3ne ~ounty Si11 :~ge disp~3~
d) Jrainave problem in S'+F corner o`_; pl.at
e~ iiabili+.y in c-ase oF in ju^y or death since ,ounty cannat oyrn plarlt
fl ?elationsh'_p of sewage disch3rg2 to loca'L aells
_ Heal th District Mejulations which a.llo4 r3ving over drair.Fiel3s L
thas
preve•~tirZ additior,al b3cteria1 action 3nd zvapo-&Lransniratian.
t,:e two public he3sirigs I aLtended and basEd upon the nfln-responses to n;{
queszians, Iaai charg-ing 'h-, County Commissior.ers h,3va r.o data to support this plant as an "up-;ra3in;" nor car. they support tZe'Lr statenent oLl nori-sign? fieance in the frace of a.ll the data to tae conti-ary. T also : eel masAu- stron-1gIy -LLvhat the
Fvtential o'' the developer losin,; his $110.000 contr3ct ar.d in turn suing the
C.ourty for its a.i lo*ar.c? of viol3tions or 13w prejudicer3 my cnances f7ar aL fair
hea.ring cn thQ merits. I was not even a11oHe3 the courtesy of a Plan Cmr.missian
heari:g. I 3m thereforeo once aggrain, reqaestinz- any tati;ible data to support
the Cainmisstoners _ decision on "jvon-sicrrific3nce",
.
Ple3se res po::l to :
S. 30C' ?owdish Rd, _
S pok3ne o WA. 99206 _
L
I '
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/
BEFORE THE BOARD OF COUNTY COMMISSIONERS OF SPOICANE COUNTY, WASHINGTON
IN THE MATTER CONCERNING )
PE-1002-76, MIDILOh9E ADDITION )
ZE-34-76, AGRICULTURAL TO ) COMMISSTONER' DECISION
SINGE FAMILY RESIDENTIAL )
(CHANGE IN CONDITION) )
Robert Tomlinson, Sponsor )
This being the time set by the Board of County Commissioners of Spokane
County, Washington, to render its decision concerning the request of
Robert Tomlinson, acting through the Spokane County Planning Department,
for a change in a condition of approval of the above captioned final
subdivision and zone classification upgrading; and
The Board having conducted its own public hearing on September_8, 1977,
having been duly noticed and advertised by the Spokane County Planning
Department and after visiting the site and reviewing the testimony, and'
The Board being fully advised in the premises did determine, based upon
the testimony submitted at the public hearing and other evidence available
to the Board to approve the above request for modification of Condition
No 7, to be modified to include approval of a public sewer systern with
the understanding that the plat sponsor also obtain all necessary
conditions of approval from the Department of Ecology, the Department
of Socia1 and Health Services, the Spokane County Health District and
the Spokane County Engineers.
The Board authorized the Chairman to sign a proposed Declaration of
Nonsignificance
The Board directed that appropriate language granting approval be developed
by the Planning Department and submitted later for execution by the
Chairman.
BY OROER OF THE BOARD this 15 day of September, 1977
VERNON W OHLAND
Clerk of Board
by
sanne Montague, Deputy Clerk
~
. .
OFFICE 0F COU1`jTY ENGINEER
Spokane County, Washingt on -
Date September 13, 1977
10: Board of County Commissioners
a, Enaineering DePartment ~
Utilities Sectio V
FROifi
SUBJECT: J. Honican, Questions on Midilome Hearing '
This department will attempt to answer those questions which pertain to the engiaeerfng
aspects of the riidilome sewerage system as submitted to the Board by Joaa Honican.
Questions ncanbered 1, 6, 7, 8, 9, 14, 15, 16, 20, and 26 would best be answered by -
governmental agencles other than the engineering department. _
Throughout the list as submitted, reference is made to a 170,000 gpd package treat-
ment plant. The first addition of Midilame that has been plaCted will only produce -
20,000 gpd oE sewage but the plant proposed for construction will be capable of _
treating 45,000 gpd (which would serve the second addition). The total develapmen t
of the 160 acres would probably need faciliries for 135,000 gpd. However, the
Planning Commission`s minutes reflect that the total development "is scheduled to
take up to 10 years and possibly more.....".
~ The following numbered answers listed below correspond to the numbers submitted by
J. Monican:
1. (answer by others) _
2. The contour map as submitted by the developer does not indicate that Y a "severe drainage problem" exists.
3. Septic tanks are primary treatment; the proposed installation would o
produce a secondary treated ef f luent . Available depth of infiltration - -
is mentioned in the Crosby report and the Corps of Engineers study.
The County presently is conducting a'208' study also.
4. The plant will nat remove the chemicals but, for that matter, aeither
tvill the septic tanks. _
I~ Normally 10 foot separation horizontally with the vertical distance
varying with depth of sewer lines. _
6. (answer by others)
7. (answer by others)
~
_ •
F
Ah
" '~K 2 w..- ~s ° - ♦
. ,
T0. Board oF County Commissioners
rROii UCilities Section, Engineering Department -
SUBJECT: J. Honican, Questions on Midilom2 Heariag
September 13, 1977
Page 2
8. (answer by others)
9. (answer by others) 10. The Health DisCrict regulations are mianimum criteria; the Countq
Engineers` regulations can be more stringent where experience
indicates it is necessary.
11. Vera Irrigation and others are aware of the Couaty policy and
have been for several years. The County will only assume
0 b M of plants if no other governmental agency will.
12. An itemized dollar amount listing expenditures over revenues
from sewer plant and lagoons xs not readily available. The
1977 budget for Utilities Zeflects a$100,000+ revenue item
from the General fund. However, this f igure is not for the
exclusyve use of operata.ng treatment facilities. Also included
in this expenditure are Facility studies (Newman Lake, and
North Spokane Faci].ities Plan), checking plats, storm drainage
design and inspections, ans=iering complaints, writing reports
such as this, etc.
13. The drainfields ln Aloha have not been replaced twice, only
once.
The leach beds at Hillsview are functzoning as designed. Additional
drainfield work will be necessary, as expected. Painted Hills
sewer plant storm drainage is designed to protect the plant
from flouding. Maintenance of the drainage facilities will be
necessary, again, as expected. Painted Hills drainage has not
yet been completed or accepted by the Countq.
14. (answer by others)
15. (answer by others)
16. (answer by ott►ers)
17. The size of the plant will not be known for some time. The initial
construc[ion is for 45,000 gpd. The County presently operates 4
facilities larger than 45,000 gpd capacity. Even if the 160 acres
were develaped totally it would not be the largest plant the County
_ w~..
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. .
TO Eoard of County Comimiss ioners
FEt0M. UCilities Sectxon, Engineering Department
SUBJECT: J. Honican, Questions on rLidilome Hearing
September 13, 1977
Pagc 3
would aperate. The boundaries of the aquif er have not as yet been
off-iciall}r detenained. Ttus is presently being done by IISGS for
cons iderata.on of "Sole-Source des ignation" . ,
18. The amount of sludge produceci annually will depend on the number
of users. Each person will contribute approxim.ately 0.4 cub ic
foot of sludge annually. This sludge wxll be disposed at the
Valley Ford disposal site. This site is inspected and apptoved
by permit from the County Health Da.strict. _
19. The plants are enclosed by a fence, with a locked gate.
20. (answer by others)
21. The P'I & 0 agreement is written for total mainteaance of the system.
This iacludes th_ lines in the streets, the plant itself, a.nd
where necessary, also the grounds. _
The plant, as designed, does nat produce methane gas as a waste
product.
- 22. The proposed design, as submitted for the first phase only, includes
enough aiea to accommodate the 45,000 gpd plant and draiuf ield.
The area set aszde for phase one is 2.8 acres. However, as the 2ad
and 3rd phases come on, sufficient additional land will have to be -
set asid e prior to approval of any expaaszon of the treatment
N
f acilitzes. ,
23. Regarding the '208' study, no. However, the USGS caill be conduct-
ing tests wi.th sensing devices at a location ta be determined _
by them.
24. The use for blowers, pumps, yard lights, heat, etc., is estimated
aC 43,500 KW hours/year. There is one lift station proposed for
the first phase. No chlorination required. Space for oae
replacement field is all that is required by Health District
regulations. The def zcit cost figure is $7,800 per year or
at such time as 118 uniCs are hooked up. Bonding is a requirement
of the o& rt agreement. -
T0: Board of County Commissioners
FROti: Utilities Section, Engineerl.ng Department _
SUBJEGT: J. Honican, Questions on rildilome Hearing
September 13, 1977
Page 4
25. Dry lines are feasible. The developer is constructiug a treatment
plan't at his own insistance. Had he chosen to go cqith sept3c
tanks and dry lines it wauld have been acceptable to the County
Engineers. .
26. (answer by others)
tJRD/ns °
M
i
t
^
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t ^
ALtgu9t 30 •"l'7
Bob Tomlinson
Robert J. Betharde
Midiloms Adaition
Please camplete the eaaloeed Environmental Checkli+st for Midilome
Addi tioa. Thi a infonmation i a neceeeary ae tbe proposal has chaaged
since it wae orginally submitted.
1`;:t+nl: 01-" ',"or your cooperntion.
4b
July 28, 1977
-PE- jc,o2,
Spokane County
Plan Commission
Spokane County Cou rthouse
Spokane, WA
ATTENTION. Bob Bethards
Dear Bob
It has come to our attention at this late date that we may be
overstepping our approval by the planning commission in the construc-
tion of a sewer system & treatment facility in our Midilome Addition
As a result, we hereby respectfully r st a rehearing on this
matter as soon as humanly possible. ~r
You very r ly, ,
p ~ alm~
ROBERT H TOMLINSON, Secretary
Midilome, Inc.
RHT/ ks
~
~
~ B 19~1
SPD pEPAR
P~a~~~
4b PE-
July 140 1977 R EC E IV E ~
J U L 1 819T7
Spokane County Pla.nning Canimission SPOKANE COUfVTY
N. 811 Jefferson PLANNING DEPARTMENI
Spokaneo WA, 99201
Deax Commission Members,
We have recently become aware of the fact that a aex subdivision (Midilame)l
across Bowdish Rd. frrnn aur progerty, is going to have a three vhase package
treatment plant far disposal of sewage. We have also learned tYia.t the Plannirg
C ommissi an apparaved this eame plat f or septic tanks and, in fact, the f inal
plat is already on f ile at the Auditar ° s.
Since a ma.jor utility change was made, by someone, after the fact, we feel it
ia maadatory that construction be stopped and a rehearing scheduled bef6re
develQpment is gast the point of no return. It would seem the fina.l pla,t on
f9.1e should he the cantrolling factor and these other actions require scrutiny
far their potential illegality.
We have contacted all regulatory agencies for waste disposal and f3nd that none
has given final approval to the plant design and yet, constxuction continues in
violation of the law.
In addition to the above, we are concerned with the following---
1) ?'here appears to be a fundamental disagreement between the regul.atory
agencies as fax as desi~n requirements far drainfields.
2) No A9&0 agreement has heen signed as required by RCW 90.48.110.
3) Mo waste discharge permit has been applied for as required by .RCW
90.48. 1?o•
4) Made1 Ixrigation, the water district that recently annexed the plat
under discussion, has no Compr4hensive P].an (required 1cy st,ate la.w aiaee lg?$ )
and an inadequate water supgly f or the over 1,000 families already on the system.
5) Yo one has considered the proximity of a proposed well and halding tank
and the gackage plant drainffield that are all projected for this plat. We wauld
like to see some concern for any possible relationship between dischhaxxge and re-
chasge.
6) To da.te we can find no hard data to sugport package treatment plants
as a grotection to our aquifer. Piitrates are not removed, in such plants, and
they pose probably the greatsst threat to our drinking water. With the waste from
over 400 homes consolidated in one, small area, we see agreater pvtential for
contamination tha.n with indivfdual septic tan:ts dispersed aver a large area.
Until someone can prove they (pk,. plants) really are protecting the aquifer,
we do not accept the plants as an improvement. IFar,-,we volumes of water as a
carrier could, in fact, create a greater potential for even bacterial pollution.
Lfe would appreeiate your personal assistance on the legality of the above actions
and ue ask that you stop construction until our serious concerns are answered.
Thank you, A
~
q ollie and Joan Honi an
S
Sokap 39Q4 Bowdish Rg,
ne' t,tA, 9920
•
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July 15t 1977
Mr. John Arnqulst, DOE Reg. Pigr.
E. 103 Indiana
Spok3neg W4, 99207
De3r Air, Arnquist,
As I discussed, some days ago with Rhys Sterling, construction of a seKage
treatment glant has begun uitaout the prior approval required in RCW 90.480110.
It is 31so unclear ,just who the certified, operating entity will be, rhere has
also been no application for a xaste discharge permit as required in RCW
90.48.170 and RCw 94.48.162. I can see no equivocation in the above cited
statutes and art theref ore requestin; immediate enf orcement of same in this in-
stance.
The A-95 application on this subdivision (Midilome) specified in3lvidual sexage
siisposal and the final plat on file at the Auditor°s also spscifies septic tanks,
IJnder the circumstances, we don°t know the status of the legality of either the
final platting or the A-95 proczss but we are requasting a re-hearin; before the
Planninm
. Commission. In the interim, we urge you to stop all construction until
we c3n resolve the lega.lity of the pro3ect and the danger potantial to the
aquifer.
Regarding our fears oF contami:.ation of our drinking xater, we °ve sezn no data
t o support the "pratective ben--=_"'it clains" made f or insta.llation of package
treatment plan~s. In fact, all the information we have points to a greater po-
tent'tal for penetration by consolidating the wastes from over 400 hQmes in one ~
small arsa. Such volumes o-il water, as a carrier, will quickly saturate and carry
nitrates and possibly even bacteria and virus to the water table. According to
the Esvelt-Saxton Repart (Dec. 1964) on the pollutian of txo Spokane wells,
"The vnrtical distance from contaminating point to the water table has no great
significance in the case of chemical contamina.nts, especially when large
quantities af flushing water are involved". Da.ta on the efficiency of already
existino "secondary" plants is noa-existant but under no circumsta.nces are these
plants removing nitra.tes. The track record on many of the plants under some
s crutin3r (such as those opera, ted by the C ounty Eng-,ineers ) have been an engineer° s
ni,htmare. Pro'oably no one is aware of the mainteriance man at a Valley apaxtment
complex who has to break the crust on top of his pla.nt eaeh day with a stfek for
aeration purposesa We are also we.ll awara of the numerous commercial installations
th3t should be on permit but are not, due to DQE•s refusal to conply with RCW
90.48. It is nothin; short ar consumer fraud for those with technical skills to
encoiirage inst311ation of these plants, over our sole source aquifer, without
data to support their efficacy or the mandated permits to determine the quality
and ou3ntity of effluent baing discharged.
You should also be aware of the fundamental disaareement between aur re;ulatory
agencies regardina design requirements fvr drainfields. And, to complicate
things further, someone needs to determinE the relationship or a proposed well
an3 elevated water tank ta the drainfield th3t will bs receiving ~6'sage-£?-6-mr--
over 400 homes. PEy family, and neighbors still on private wells, ara not too
ksen a3out u6ing such large volumes of effluent (150,000opd) to recharge our
drinking •dater supply.
I
.
Pg. 2 41
r
Since our water pressure is already nilg on peak days, we are concerned about
the lack of involvement of regulatory agencies rea the adnquacy of the existing
supply and ths Impact of 'Lohe i:iitial 72 homes already underway. l2adel Irrigation
services over 1,000 ,-fam3.13.es (Class I) right r4d but h3s no Camprehensiv2 Plan
3s Tequired by washington Stat$ since 1973. In fact, Kermit Ruriolph (Seea and
atty. for the aistrict) stp-ted 3t a 3oundary Review Board hearirg some years
ago th3t with the completion of 41oha and Castle subdivisions, the district
' wou~3 be operatin~ at capacity and would be in no pasition to annex and support
I further develoment without additional wells and stor3ge capacity.That state-
ment was ma.de long before 116,his latest annexation 3nd has obviously become
"Inoperable". rhe initial 72 hames will be on the existing system "as is" but
~eventu311y the new well and tank will be constructed. What do we do in the
interim'
Ilnlass DQ~ assumes fts responsibility in this matter and puts a Stop ai^der
on 'urther illega.l construction, we have no alternative but to barirg legal
action agair-st the ager_cy to enfarce RCvi 90.48.120 and the other appropriate
st3tutes and regula.tions.
I
Sincerely,
i V
Jo3n Honica.n
S . 3904 Bowdish Rd.
Svo'x.anet WA, 99206
cca
3111 powell. Atty.
liarry La.rned, Co. Comm.
, ! om Justus, DSHS
ud Farantsg Pres. WEG
R E C E I V E
JUl1 b1917
SPOKANE C4UNTY
PLAWNIMG DEPARTyM
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July 139 1977
Fr. Lynn Stowell, Dir. F.HA
4. 420 Riverside
!~'aokaneo W4a 99201
D@3?" M?". c tCWeZ.l'
i taIkAd with '1*-*. Dugan (July 7) to atte:npt to determine :rho ha3 ree-
auired a 'pac¢age spT-mge treatment g2ant for :4idilome Sutdiv±sion, ~r.
Lugan said hs had "'reconnerdzd" such a system to the ~eveloper.
I have a par+.ic•slaz interest in tnis facility since wa are direetly
acrass the st?-iet and l?ava disr_fl•jPred that constrttction hrs be3un on
the pZant ~litho?1t the pri or apnroval reauired by ?.avo Tn facto the
final plat on ¢..his subdivision was filzd $ndicating it had been aprroved
for sept4c tanks,
IT
Wer the feripral ^rez~oi, of Infotmation Acte Ta..m requestfng copies o~?
all corresnondsnce and/car ortiers re2sting t,o V+s acavs in-st-alLat!.on. T
s••111 Qx.taect to hen-r fron you w'thi nthe time speci fied in the fedsral la.w.
T11AT1', 3rpti ~
Jaan Konican
S. ; Q4 3oxdish 'do
Sadlmne, '14. 09206
fi!ftk
EF'x
~ -rE I YED
JU1181gM
sP31sNE COUNTY
P~~IMING DEPARTMEN'
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SM:,)MMC CO'!1'LOUMT nOt Sl
ENVIRONMENTAL CHECKLIST
Introduction: The State Enviranm?nt31 Policy 11ct of 1971 ,-,napter 43.21C:., V,
requires alI state and local governmental agencies to consider environmen[al values
both for their own actions and when licensing prlvate proposals. The Act also requires
that an Environmental Impact Statement be prepared for all major actions signiffcantly
(and "adversely", as per WAC 197-10) affecting the quality of the environment. The
purpose of [his checklist is to help the agencfes involved determine whether or not a
proposal is such a major actfon.
Please answer the following questions as completely as you can with the information
presenkly available to you. Please answer questions as "yes" or "maybe" if, in your
opinion, even only slight impacts will result. The reviewers of the checklist will be
aware of and concern themselves with the de r e of impact, asking you for more informa-
tion, if necessary. Where explanations of your answers are required, or where you
believe an explanation would be helpful to government decision-makers, include your
explanation in the spaee provicied, or use additionel pa ecs, if necessary. You should
include references to any reports or studies of which you are aware and which are
relevant to the answars you provide. Gomplete answers to these questi4ns now will
halp all agencies involved with your proposal to undertake the required environmental
review without unnecessary delay. The following questions apply to your total proposal, not just to the 1lcense for which
you are currently applying or the proposal for which approval is sought. Your answers
should include the impacts which will be caused by your proposal when it is completed,
even thouqh comple[ion may not occur until sometime in the future. This will allow all
of ihe agencies which will be involved to complete their environmental review now,
without duplicating paperwork in the future,
No application shall be processed until the checklist has been completed and returned
to the appropriate Counry department, State law requires explanations for everY "yes"
and "maybe" answer on the checklist. The person completing the form may be require('
to provide explanations for "no" answers, and in somP cases, more detailed inform.3ti,_
to efd in a threshold determination,
NOTE; This is a standard form being used by all state and local agencies in the State
of Washington for various types of proposals. Many of the questions may not
apply to your proposal. If a question does not apply, just answer it "no" and
con[inue on to che next question.
ENtiIRONMENTAL CHl:Ck;I.TST FORM
1. BACKGROUND
1, Name of Proponen[: Mi d i 1 ome I nc .
2, Address and Phone Numt:er o: Proponen[: W. 606 - 3rd
. ,
Spokane, Washinqton 99204 624-9131
3, p-3ce Chacklist Submitted: September 6, 1977
9. Agency Requirinq Checklist: Snokane Countyr Wa,
5. Na m,-.~ of Proposal, if Applicable :
Midilome Aciciition
I
_ '
(IF SPACE FOR M(PLANATTON IS INADEQUATE, PLEASE ATTACH ADDTTIONAL Pr►GES.)
b. IJ3ture 3n,.3 i3r.iez D,:!scripticr. of t;i- (inr-lut:i:lg but nc~t lir. :-i L~ iL.,- :Size,
general design elements, and other factors that will give an accurate under-
s Eand ing of i t s scope and na ture) :
160 acrEc of f 1.at sand; _1 and s ur ,
400+ lots to be developed with paved and curbed 5;trPPtc, rtrapt
lighting and sewage treatment plant.
7. Location of Proposal (describe cize physical setting of the proposai, as well as the
extent of the land area affected by any environmental impacts, inrluc?ing -!ny other
information ne►eded to give an accurate understandin( ot rh+~ I'D1 -1i ~•,-ti1~g
of the proposal) :
Bounded by 32nd on the north, 40th on theso
uth, Bowdish _on_.the _wPst._
and Pines on the east.
8. Estim3ted Date far ('nmoletinn of th(71. F:~-)Pcsal:
5 - 8 years
9. List of all Permits, Licenses or ;:aovernment Apl)r(-)%-.-11s r.:;-, Propo:>-11
(federal, state and local - including rfizones):
S,pokane Countv P1 nnina r'naK,;ssionT-Hoalth , , and
Commissioners. Deot_ of Fr_nlogy prainf.- 4t,
10a. Do You,or the owner !n tlle event you do not own the subject lancj, have any
plans for future addttlons, expanston, or further activity relat?d to or con-
nected wlth th[s nmposal? If yes, e:{ula[n:
No
lOb, Do you own or have optlons cm land nf•arby or adiacesit to thfs proposal's
locatior.? If }►nf~,
rd o
11. Dc you krzov,., of any plans ry others tr.cludlnc; thE- owner which may affect thc>
;:mpc•rty covered hy your nmpos_i1 or l--srid adjacec;t uc- nearby? I, Ye s, expLti n:
A(1
12, a~tact, any uthzr apolicakiun f;:A::1 =hat ~:j:s i_,,,en ccr-lpletec.; regarc'.inq che
If none has been completed, bu[ is expected to bc fiicc' at s_nmr~ future :iate,
EF:a Ilar!..(~ '.)f Fn
II. ENVIRONMENTAL IMPAC'T:
(Explanations of all "yes" and "mnybe" answers are required)
J . 1 : t .
1. Earth. Will the proposal result ir:
(a) Unsiable earth conditions or in ctiar.ges in geologi`-
s tructures ? . . . . . . . . . . . . . . . . . . x
(b) Disruptions, displacements, cornpaction or overcovering
~ of the soil ? , , . , . . , . . . . . . . . . . .
2 - ~
. ~
, ~
(IF SFACE FOR EXPI.ANATION IS INADEQUATE, PLEASE ATTACIi Al.-)D;'I'fONAL FAGES.)
Yes M.iyt-e ?vo
(c) Change in topoc~raphy ar grounu sur;,ice r~lief ir_~'LUI"C07,, X _
(d) Tho destruction, covering or modification of any unique
geoloqic or physical fea[ures? , . . , . . , , , , , X
(e) Any increase in wind or water erosion of soils, either
on or off Lhe site ? . . . . . . . . . . . . . . , x
(f) Changes in deposition or e:-osion of beach sands, or
changes in siltation, deposition or erosion which may
modify the channel of a river or stream or the bed of
the ocean or any bay, inlet or lake ? X
Explanation: Thi s pro.iect i s a housing development and as such the soi 1 wi 11
be moved, comgacted and govered over as necessary to that usaqe. The topo-
araphX will changp tn that of a residQntial housing development.
2. Air. Will the proposal result in:
(a) Air emissions or dekerioration of ambient air quality?. X
(b) The creation of objectionable odors? . . . . . . . . . X
(c) Alteration of air movement, moiscure or temperat«re,
or any change .in climate, either locally or regtonallv? X
E~1a n,I tinn: - - - - - - - - -
3, VV3tef, Will the proposal r?sult in:
(a) Change fn currents, or the course or direction of
water movements, in either marine or fresh waters? X
(b) Changes in absorption rates, drainaqe patterns, or
che rate and amount of surfaca water runoff X ~
(c) l;lterations to the course or flow of flood waters? x
(d) Change in the amount of surface water in any water
body ? . . . . . . . . . . . . . . . . . . . . X
(e) D:scharge into surface waters, or in any alteration
of su:face water quality, including but not Iimited
to [empurature, ~iissolved oxygen or turbidity? . . . . . x
(f) Alteration of the direction or rate of flow of ground
waters? . . . . . . . . . . . . . . . . . . . _ X_
(q) Change in the quantity af ground waters, either thcough
direct additions or withdrawals, or through interception X
of an aquifer by cu[s or excavations ? . . . . . . . .
(h) Deterioration in qround water quality, either through
direct injection, or through the seepage of leachate,
phospates, detergents, waterborne virus or bacteria, X
or other substances into the qround waters? . , , . , ,
(i) fteduction in the amount of water othecwise availabla
`or public water supplies ? , . . . . . . . . . . . . ~
Explanation: The streets are to bepaved and curbed which could effect rup-
off. Theground water could be effected bv the fac1 that_d.._sPdQP. _r _a _ropnt
facility with drainfield will be installedT ~
-3 -
- ~
I
(IF SPACE fOR EXPLANATION IS INADEQUAT4. PLEASE ATTACH ADDITIONAL PACES,)
I
Yes %i _ivbe
9, F lora . W ill the proposal result in:
(a) Change in the diversity of species, or numbers of
any species Df flora (including trees, shrc,bs, grass,
crops, microflora and aquatic plants) ? . . . . . . . . X
(b) Re:du^tion of the numbers of any uaique, rare or
endangered species of flora? . . . . . . . . . . . . _X
(c) Introduction of new species of flera into an area,
or in a basrier to ►.he normal replenfshment of
existing species? . . . . . . . . . • • • • • • • -X
(d) Reduction in ac.reage of any aqricultural crop ? . . . . . x -
Explanation: This land was farmed prior to our development, however it was
not a hiqh yield type of operation due to the Qoor quality of soil.
Yes Mavbe N-D
5. Fauna. Wfll the proposal result in:
(a) Changes in the diversity of species, or numbers of
any species of fauna (birds, land animals including
reptiles, fish and shellfish, benthic organisms, x
insects or microfauna) ? . . . . . . . . . . • - • • -
(b) Reduction of the numbers of any uniqve, rare, or x
endangered species of fauna ? . . . . . . . . . . .
(c) Introduction of new species of fauna into an area, or ~
result in a barrier to the migration or movement of fauna? .
(d) Deterioration of existing fish or wildlife habitat? X-
Explanation: es M 3vbe IVo
6. Naise. Will Che proposal increase existing noise levels?. X
Exp2anation: The noise will increase as it relates to a housinq usage.
Yes Maybe No
7. Liqht and Glare. Will the proposal produce new lighc or gtare? X -
Explrnation: the homes.
Yes Maybe No
8, Land Use. Will the proposal result in the aiteration of the X
present or planned land use of an area ' . . . . . . . . . . -
Explanation:
~
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• . ' '
.
(IF SPACE FQR EXPLANATION IS INADEQUATE, PI,EASE ATTACFl AI?DiTiONl1L P:.G£S.)
Yes Movbe No
9. Natural Resources. Will the proposal t•esult in:
(a) Increase in the rate of use of any natural resources? -X
(b) Depletion of any nonrenewable natural resource? X
Explanation:
Ye s M a)6ie
10. Risk of U22et. Does the proposal involve a risk of an
explosion or the release of hazardous substances (including,
but not limited to, oil, pesticides, chemicals, or radiation)
in the event of an accident or upse[ conditions --X
Explanation: Yes Mdybe No
11. Population. Will the proposal alter the location,
distrlbution, den5ity, or growth rate of the human
papulation af an 3rea? . . . . . . . . . . . . . , . . X -
Explanation: Thprp arp tn hp mnrP thaa 4C1 npw fami 11,PS 1 i vi na i n th7 c
n+
12. Housinq. Will the praposal affecc existing housing, or
create a demand for additional housinq ? . . . . . . . . . X -
Explanation: Sh rP wi]) bQ~4QQ+ neyl bouses Q this proppr
Yes Nsaybe 1'0
13. Transportation/Circulation. Will the proposal result in:
(a) Genera[ion of additional vehiculz!r movem.,.nt ? . . . . .
(b) Effects on existing parking facilities, or :iemand for
new parking ? . . . . . . . . . . . . . . . . . X--
(c) Impact upon existin5 transportation systems? X-,-
(d) Alterations to present patterns of circulation or
movement• of people and/ar goods? , . . . . . . . . x--- -
(e) Alteracions to wacerborne, rail or air traffic?
(f) Increase in traffic hazards [o motor vehicles,
bicyclists or pedestrians?. . . . . . . . . . . . .
Explanation: 40 + fam71jp„S W111 surelv h Ve the nnrmal niimhPr nf ►ahiclac
apd the transoortatifln tvs Pmg,- vehl cul ar mQVemPnt-c anci rircl-Il.;ti~ patter-ns
Wnli1 d he a f fpr_tpri_ _actnrri_i.nnl_v
- 5 -
(IF SPACE FOR EXPL1aN11TION IS INIIDEQUATE, PLEASE ATTACH ADDITIONAL PAG£S.)
Ycs
14. Public Services. Will the praposal have an effer_.t uoon,
or result in a need tor new or ..3ltcred aovernmental ses-vices ~
in any of the folluwing areas?
(a) Fire protection? , . , , . , , , , , , . , , , , X ~
(b) Police protection? . . . . . . . . . . . . . . . x _
(c) S chool s ? . . . . . . . . . . . . . . . . . . . X
(d) Parks or other recreational facilities? . , , . , , . , X _
(e) Maintenance of public facilities, includin5 roads? X ~
(f) Othec governmental services? . , . . , , . . . . . X
E,~x lanation: Al 1 of these areas mi ght bQ effected due to addi ti onal popul a-
tion* how _~r .wQ,fpp.1_ t impact woul nQt significanjly chanq,e the existing
ci tilatinn
Yes Mayba No
15. Energy. Will the proposal result in: ~
(a) Use of substantial amounts of fuel or energy? X ~
(b) Demand upon existing sources of energy, or require
the development of new sources of energy? X ~
Explanation: I tWi 11 be necessarv to heat and i 11 umi nate these homes and
PnergV wi 1 1 hP I1 CP_Ci
Yes Maybe No
16. jjtilities. Will the proposal result in a need for new
system 5, or alterations to the following utilities:
(a) Power or natural gas? . . . . . . . , . . . . , . X
(b) Communication systems? , . , , , , , , , , , , , _X_ ,
(c) Water? . . . . . . . . . . . . . . . . . . . X ~
(d) Sewer or sepUc tanks ? . . . . . . . . . . . . . V
(e) Storm water drainage? . . . . . . . . . . . . . . x _
(fl Solid waste and disposal? . . . . . . . . . . . . ,..X_ -
Explanation: Al 1 of these thi ngs must be al tered or provi ded i n order for the homes to have necessary amenities.
Yes Maybe No
17. Human Health. Will the proposal result in the creation of
any health hazard or potential heal[h t.3zard (excluding
mental health) ? . . , . . . . . . . . . . . . . . . X
Explanation:
. ' , . 6 ~
.
(II' SPACE FOR IXPLANATION IS INADEQUIITE, P'.E:ASE ATTACH ADDITIOIv'AL PAGLS,)
Yes Maybe No
.~:~ati~.•~ i<.~s, Will the proposal resuli ►r. t'.,o ~~!-.stru,tion of
+ny scenic vista or view open to the p lblic, or will thP pra-
pu5a1 result in the creation of an aesttietically offcnsive site
,-_.pen to pubIlc %Kew? . . . . . . . . . . . . . . . . . X
l ,t:Liticr:
YPs N?:!ybe No
19. Recreation. Wiil the proposal result in an impact upon the
qualiiy or quantity of e`isting recreatijnal opportunities? X
E~:~:~1. ~ i . .
Ycs Mayue TJc
Archeologica!Aiistorircil, W,ll tile p.-oposal result in an
alteration of a significant archeologici-.l or historical site,
structure, object or builcling? . . . . . . . . . . . . . . X
El;^lanatinn:
III. SIGNATURE
I, the undersigned, swear under the peiialty of perjury that the above responses are
made truthiully and to tl:e best of my knowledge. I also understand tfiat, should there be
any willful misrepresentation or willful lack o f full disclosure on my part, Spokane County
may withdraw any declarat[on of nonsignlficance that~lt""mTi4tr~ issue ln reliance upon this
checklist. `
r"•
:
D a c e: n t:
(Pleast- Frinc o:- Typc-,)
Pr',u;,rient:
ALidress: ,
Phone: ~
.
Person completing form:
Plione:
Uate:
D!pt. or Office of Cnunty iteviewing Gnecklist: • 4
Staff Mamher(s) Reviewing Checklist:
,
117/1T
_7
J
~
OFFiCE 0F TNE
M r
SPOKANE COUNTY PLANNING DEPARTMENT
Date November 2 111977
To Terry Kopet, Chafrman, Board of County Commissioners
From Bab Bethards, Plat Administrator <
SubjecP PE-1002-76# Midilorr3e Addition
The attached are in response to the request for reconsideration (submitted by Mrs.
Rollie Honican) of the proposed decla.ratf.on of non-significance the Board issued
with regard to PE-1002-76.
RjB:kj
cc Mrs. Rollie Honican
South 3904 Bowdish Road
Spokane, WA 99206
~
`t
L
qLIE'J~'IOPdS S113111IriED i0 rs-{EE SPGN NTE CCUNTY COWthiILSSiOY~+,'RS AT I'HE ,1UDILGIE R~i[EARINC
Sept. 8, la?7
rlany haurs and much thoutght h3ve gone into the questions submittsd today and I
hope you agpreezate vhe eifart expended in trying to get answers prior to the
hzaring. With so many agencies I-aaving a piece of the action zt's alntost impcssiple
to a.cquire data without devating full time. The fO110Wl11a questians Vere a•ritten
randomly and most pertain directly to the itidilome Sutciivision and more specifice12y
to ths passible agproved instaltati on of a 170,000 gpd package treatment p? ant.
1. 4dh3t is trE so31 classi£ic3tion in the drainfield area' Any perc tests' Are soils
excessiv21y permeable?
2. Iiok•here in the Plan Comnission L'ile is the severe drafnage groblem in thQ SW
corr,er mentione3. What is the cause' rioiY and Where will water be diverted7
3. What d3ta does the County ha.ve to -support the installation of such a vlant as
an upF;rading'7 Is anything avai'i3ble on depth of infiltration in rElation to suc:l
volumes'
4. Wh1t psrcanta.ge of the 170,000 gpd wlll be unremoved chemica].s sucn as r_itrates,
5. Where was tne sewaae collection system installed in relatxon to the drinking
water Zines"
~ Did anyone det.ex;iiine the adequacy for existing customers hefare a,pprovino an
additional 72 homes on a rtater supply system already overtaxed? YeLmit, Rudoll, Sec.
for Model Irrigation, statzd at an annexation nearing on April 14, 197i, that the
district is developfn~ b„v staaes and would not add any service arEa which might
jeopardiae the primary dutv of sQrving those 3lready in the district. Oux gressure
is alxeac3y nil on peak days so his °71 sta,~ement must be inogerative. also, Noriel
a Class I da.strict with no Comprehensive Plan as required since 1973.
What is the proceaure (irt any) for iritiating refiearings when mcadxfications
to conditions are contiemplated9 There appears to te no uniform plan as some ga to
renearing and some don't.
~ 8. Since both the County Envineers and the r4ea.lth District were aWare of the plara,
'at stevs should they have taken? Anything in tirriting?
Why doe<.,,n't the dedication on the fina.l plat even mention sewage disposal?
0. Kog can the drainfield design problem between the Co. Eng and the Health Dist.
be res olved7
11. H3ve Vera Irrigation and others been made aware of the fact that the Courty is
w311ing to assume the rIp 0 on pla.nts and lagoons9
12. What is the present itenized dcllar a;r:ount that we taxua.yers are alzcady
sulvsidizing plants and lagoons we don•t even use' tJe know the $5.50%Ronth utility
fee to the individlial doesn°t begin to 4ouch the actual cost. 1$111-at wz nee3 is a
tliorouiyh cost/tkonefit analysis tirat wauld include possYble danger to the aquifer,
major re-pairst liability and depreciation write-ofCs among other things.
13. Since the cir.33.rzrlea.d fn Aloha has already been replace3 twicQ, whare do we go
frotn here' Are the new leach heds at riillvzew solving the d-rainage ur0blem'> How
can the new painted qills plant ever work when it°s in a natura.l drainaoe4ay 3r-I
the pipe to divert water flowinv dawn the hYll is already two-thirns full cf debrls"
~ 11~. Ir you insist oa insta.llation of this piant (Itidilome) vrill yo-~a require
coltpliance with RCW 90.48 by the DCa: priar to furthar construction9
ft Witl Luture conditions identify a rzsDonsihle 3gency by name rather than tiague
rei erences tv "approori ate" agencies9
~ 16. What specifie steps will be taken to stog the common practice oi eonstruction
prior to apFrov31' Does the Courity presently have the Iegal authority to issue
injunctions in such ca.ses' '
e
•
~ Q(TESTI OVS
Pg. 2
17. Since we°re talking the largest plant the County Engineers riave operated, it
would seem 3n zIS is in order. Oany in this neighborhood are still on pritiate k*ells
and would not be thrilled with recharve from the 170,000 gpci of effluEnt. Is
Chester in the ma jor flow area of the aquirerl What is actually known about
direction ard rate of flox here and static water levels? Several years ago the
water table in this area was dwirdling rapidly.
18. riow much sludge will this plant p?^oduce annually and where will it be dumgAd'?
19. S3,nce I am fund3mentally opnosed to children playing around the trea.tment
plants, what can be done to make them mcre safe? I would suggest tha.t any who
consider such concarns af no consequence make a trip to view the size and depth
of this h3.lf `'ir_ished plant.
\20. Since the germit for the drainfield is illegicle, can someone find aut wha_t
the Leina.l caTa.city will ,actually be and what the permit cost?
21. €Jhy doesn't the proposed M&C call °or upkeep of the trounds surroundYng the
plant? Won't it be a firetrap if allowed to dry out and doesn't the plant
manufacture methane as a w3ste product' If so, how rill the methans be dispdsed
of and Will it cause an odor vroblem?
22. I ha.ve not even been able to get a figure on total land set aside for the
DI3nt, rlrain'ield and (Ihope ) buffers.
23.Is any of the "208" study bs3.n~ done in areas with high volume discha_rges
af efrluent' 'douldn't this be the most approgriate place far sensing devices'
24. What w311 be the grojected energ3r use for Aiidilorrte? Any lfft stationsl
Chlorination9 Spa.ce set aside for more tha.n onP repl3cement drainfieldl Amount
of time required each day 'Lor m3intenance, etc? Break even point in contract'
3ondYng required?
Z5. If a collection system is of prime importance, why aren't dry lines feasible
until we dzcide to ergYneer a decent d3sposal system?
fk Finally, trying to get information an tlidilome has b-en time consuming and
stratin3. Une thing is most apparent - the County is not in compliance with
Initiative 276 tha.t became law years ago. 276 has an "Access to Publxc Recc,rds°
5,4Mna.f requires inaexzn; of all pu nlic documents and a desi-rr-ated public documents
oFficer who has speci3l expertise on wh3t is public and wha.t is not. Gnly your
Park Dept. has done the job as far as I can tell and a training session=by the
Atty. Genera.l or the Pros. Atty. is long overdue. Please advise what sDecific
steps you are taking to comply?
I would hope to meot with your staff to discuss the answers to each of the above
as they are 311 legztiraate questions deserving of a response. Flcaae mail your
Frritten resvonse to---
Joa.n Honican
S. 3904 Bowdish Rd.
Spokane, WA, 90206
~
. BACKG30Ui1D ON F'R03LEM ARC-r15 ?y SDOKA'1E C.OJIv'TY WII'H RLCARD TO SEvJAGE DISFOSAL
Submitted Sept. 8, 1977
to
Spokane County Commissioners
by
Joa.n Honican
1) According to Soil Conservation Service maDsp most of Spokane County has serious
limiting fa.ctors for drainfield 3isDosa1. Aiuch of the Valley flaor h3s the
opuosite problem in th3t it is toa permeable and preserts little or no protection
f'or our pricelesso sole-source 3Q11ir6P.
2) "The vertical distance from cant-aminating point to the water table has no
great significanc6 in the case of chemical conta.mznants, especiaZly ti~hen 13r~;e
quanti+_ies of flushin; water are involved." (Esvelt-saxton Report, Dec. 164)
3) ?'wo d ocumented instances of Nell contamin3tion aere from salts not bacteria.
Or,e well (the Grezt 1?orthern i*~ riill,y~,rd) suLpose3ly had 130 feet o~ protectfon
from its source of contamination. Chace uolluted. even people two mi].es north in
Fiorgyan Acres cornplained of the taste of their water. Kaiser Trentwoad's well was
also contaminated by chlorides. The salts traveled vertically to trlP water table
and then about 1,000 feet to the well. Since ttie Kaiser well is in an area of
grPater a.quifer flow it is once ag3in usable but, the rtillyard ~rell, outsi3e the
are3 of malor flow is still shut da4n. The brells were contaminated 23 years ago.
u),So-called Secondaryr Package Flants do not remove chemic3ls. T'hey are only
glorifie4 septic tanks discharging to a sina-].e drainfield and, since the Dept. of
Ecolo;y refuses to issue Waste Discha.rge Permits, no tAsting is being done on
quantity and quality of E'rfluent fram these g1.a.nts. Ve therefore have no basis
fCr comv3rison to support such plar.ts as an improvement over individual septic
tanks. I have been unable to find any tangible data on volume of disch.3rge in
relation to depth of penetration in extremely permeable soil. I ha.ve heard that
some tests of local wells have turned up high nitrate counts thus supportina
my contention that conta.mination of an underground water supply is a n insidious
thing. riost of the testing is f or c olif orm bacteria but it appQars t'iie greatest
danger lies in the cumulative ef*"ect of chemicals which do not dissipate like the
b3cteria.
5) There are no "Standards" for groundwater. With all the na.tional emphasis on
protection of surface wa ters there is a clear messabe to those %ho don't want to
be hassled by DCL and EPA to dischar-Ze to dzainfields. They W3.11 not have to get
permits or do any testing and, as a result, na one will have the har3 datpL needed
to determine the extent of our disposal proolems. ?roof off this attitude Yj the
flak the City receives f or the mess at Long L•ake while the C ourty remains on tr e
sidelines un3c.z.thed. The Caunty even adds to the City's problems by usir; the G`ity
treatment plant as a drop for some of the milli ons of gall ans of sludge pumle3
annually from County septic tanks and cess poals. ?'he rest i.s dumped at strateba c
locations all around the County where it oozes to the surface despite any efforts
to cover it, ihe County shrni1d be n3med a r.arty to any legal actior instituted
by regulatory agenci.es sor refusing to assune its res ponsi ailiicies to F?^c3v3 de
adequate dispos3l oitside the City limits. if the Ilalley incorporates, it wil-1
be at least the Sth larg
,sst city in the state and yet, i.t's gotten afree ride
a11 these years on the back of the City. If the City should opt for subsurface
dispos3l wou1d our problzms be over?
~ P0 . G
6) The plans for the North Star Packa;e Plart in Mead went through four agencies
and the plant didn't last even ale3r. Over ZOG calls were received in one day
about the stench from a sparsely populated area. I don't need to tell you xdat
will happen if the proposed 170,000 aod ptant Qoes belly up in this densely
popul3ted area. SCAPC4 ha. received 33 compla,ints on odors from plants and la-
,goons since '74 and we all kr~ow that's just the tip of the iceberg. Many would
c311 the Health Distx3ct or other a~encies ar not even bother.
7) The Dept. e Ecology refusas to assurne its mandated responsibilities under
?tC9 ~0.4~8. I~~rrote John k.rnquist severa.l monzhs a~o regarding the ille~al con-
structzon at Plidilame and, to date, have received no reply. IRCJ 90,48.110 sta.tes,
"411 plans an3 sDecificatzors for the constrliction of r!@rJ sewerage systems,
sewage treatment or disposal plants or systems, and the progosed method of
future oper3tion and ntaintenance of said facility or facilities, siall be sub-
mitted to 3nd be approved py the cammission, bQrore construction thereof may
bexin." (Emuhasis supplier3) In addition, RCJ 90.43.152 states, "Any county or
any municiual or public corporation operatino or proposing to ope:ate a seweza;e
system, includin; any system ahich collects only donestic S@He2agP., which results
in the dispasal af wasTe material into the waters of the state shall procure a
4rmit from the de rtment,of ecalogy before so disposing of such materials."~
~mph3sis suppliedr
_8} lhere is a major disaoreement betWeen the two state agencies DCE and DSHS
as to w;zo is respon6ible f or approving rlans for package plants like Mlidilome.
Tom Justus of DSHS m3intains th3t ZJ9C 24$.96 was never meant to apply to
mechanical p?ants of this magnitude and 'ne ca.n obvlously not do a job xith or.ly
three people on his staff to cover all or Easterr. Washington and his responsibil-
ities for drinkina water su pplies. A close reading of tne Definitions section of
llAC 248.96. 020 would seEm to support ?'om ° s interpretatgon thus giving D0E pi•imary
responsibility for approving plans. rhis must be resolved.
9) There is another furdamental disagreement between the County Engineers and the
Health District regarding drainffeld design. riealth District rebulations alloc,~
tWice the 30D loadi.ng that the County Engineera will accept for m3co. It is obvious
that responsibility is so fractured f or approval of packaae plants that it will
require a riajor effort on the part of everyone concerned to straighten things out.
10) I1o one can provide me uith data on the actval deficit th9 County is nresently
running on the eight plants and lagoons it o_nerates and yet, they are planning to
assune three more this ye3r. Also, most people are unaware of the fact that the
County Fark Dept. ha.s made a crnrEmitment to m3fntain the 4rounds around ten sewa;e
plants. They are presently maintaining tnree in return for $28,000 Jn equipmerl;,
given them by the County Ennineers. What we have is a i~ickey llouse sewage systcjn
coming in throu;h the ba.ck door witn all kinds of hidden suhsidies. We even ha"e
small irrigzLtion dis tricts such as Vera operating r.3ckage plants and la;oons at a
l oss to their customers, but few attend b4ard meetings to learn they are picki.ng
up i.n3.s loss with their elc:ctrical rates. fou also put Vera in the position or
having to a.pgrove plants without the expertise to do so. If the County Encrz»eers
arsn't going to onerate a facility they dcn't approve the pla.ns. This opens up the
, possibility th3t Vera rnight accept a plant with the riealth District's hiaher
loa.ding desi&m and therefore compound their red ink when the drainfield h3s to be
replaced. The question xemains as to why they contfnue to accept plants rather than
givfng them to the County Engineers far ogeration?
v
. , Pg. 3
11) The grounds around some plarrts are actually called mini-Dp-rks and children
are encoura.ged to D13y in the onlf open sDa,ce in a subd.ivision. There is a
potential "attractive nuis3nce" problem in the event that a child would be in-
,jured or drowned in one of these facilities. Removable grates or screening are
not required and liability is not clear since the County cannot actua.lly own the
plants since it has no Compreh4nsive Sewer Plan. The Vidilome plant will he fenced
but fences h3ve never stoDged cu..ious children attracted by churning water and the
hum of pumps and we are discussing a plant 1.arger than many sximming pools with 10
to 12 feet of muck. So far we've oeen lucky and have only nad rocks thrown into
the sewra.;e and pumps unplugged. We°d like to knox if such installations are even
insurable' -
12) There is no clearcut responsibility or cAntralized data on such operations
and, since germits 3nd testina are nil, it is impossible to make any kind of
ra.~ional decisions regardin; their eff-icacy. To take the position that navir~; a
collection sy`stem in the ground supercedes all other conee"rns iS fzresponsible.
There are other more imaortant considErations than the dubious cnance that you
might at some future date be able to pick up some of these systems. The long-range
costs of numerous lift st3tions and excessive energy use could outweigh the
nebulous benefits. Not the le3st of our concerns should hs---Are we creatfng a
greater potential for contamination by consoli'dating the wastes from over 400 homes
in one small axea? The att3ched data from a book in the C ounty library called*
"Urb3n Fl.anning Aspects of :later Pollution ^ontrol" by Sigvrd Grava helps put
the package plant dilemma into gersgective.
13) There is a major 17reakdown in the plan.ning process right here at the local
level when a major modification to cond3.tions and to a fin31 p13t can be ini.tiated
and constructEd with no opportunity for adj3cent property owners to be inf ormed
about an installation that could ha.ve ail extremely negative devaluation ez"fect.
C onditions are vagus. Responsibility is not clear. And we've been advise3 by
several people th3.t construction prior to approval is commonplace. At least one-
third of all projects ;o in this way and we are told tnat no one has the authority
to do anything about it. ge are no longer naive enou;h to assume regul3tory
agencies are doing +,,heir job in fact, oe've become cynica.l to the extreme.
14) '{Ihen I requested a list of all package plants and la;oons in Spokane County
from the Health Distrlct, several weeks ago, I was told they didn't have one.
Since they must approve all the drainiields shouldn't they alsa lnave some records"
We have al5o found that not only does DGE refuse to put domestic systems on permit
they also refuse to xequire testln; of cemcnercxal inst,all3tions such as--- Vall ey
Ceneral riospital, Red Lion, University C3ty, etc. Doesn't anyone carz what a hospi tal is dischz-r~ing to aur aqui ~'Pr?
15) TtCII 58.17.16o (Platting Law) requires that e3ch and every pla,t ar replat of any
property filed for record sh.all--- "(1) Contain a statement of approvwl from the
city, town or county licensed road en;ineer...as to the survey data, layout of
streets, alleys and other rights o£ way, design of bridges, sewa~e and water systems
and other struetures." (EmDha.sis supplied) T'rie dedication on the ri.nal plat contains
no reference to appraved sewa ;e dispasal.
B~C STCLI'_1 UZa'/~ 190C e~j/ ~ J~~-S
~ r. ~ F ~
P~r ~ ~~a 1~~ ~ i~L~Z1J LJ
~~--3..
10 re•,r?].o~d ard mar, .e~. in the 10150's"
. , ~ o o ~q,.e f po:,ar co~. ~su ~
2. Usu~l~y • o, ~a~as2~r._d a„3 r., u4z heav _~~~ion.
3. Can' t cmr-n--e in e:ginearirn- eiiicienc;f ;+yth standa_d pla.n+s un3eT epntinnoe:s
control.
4. A 50 house developnant ( o, even 25 p i7^ hcne-s a?-e eYrar_sive) is er_aL&h
to support econom'sca.lly a F-_ckaga trp,.? tment p1aZ~.
5. C3,rac-itizs ar.d t;~-as nus t bz sa].ecteC carefu? ly, rzoui=e rQOular ir.srection
P-nd n=inter3r_ce, nu.~ be scrzzrQd an3 = ar_ced.
6. Tne plants zre vuIr.-e~a cle to shock 1c.3~dl:.rZs (sha_rp increase in L Io.. volumes )
uhich r.3y cZuse z larQe qirtity discharge of solids in the e-EflLen+.. Yecr.3ai: --l
faY?-ures can h3ve t qe 53t1e res•a? z.
7. Possi'alm. safa1L1-.y precautions a=3inst, p13r.t uFsats are: final sani iilt_-ztioa,
dup?.ica±ion oa, vital equicmer-nt ar_d bu3 i er strips c= 500 z"saz.
8. SOri!° S3lV?crz VZlL23 '.+hl32'°' S°PtiC tan_'{S Zi4 8 t0'c.al 1.QSSe
g. Dan'Z demand a la_oe nurziCir.al exzfln3izu--e •Nrsn revenua tasa he.s not de7slora3,
10. A precis-e r?star -ul?n is indispensahl.s in order to consolie=Le aI1 paac`mgs pl-a,nrs
into a sizigla system in th.. future.
EXCMPrs r RCM "s:IA?,?, sEiv-aGE TR„AT ~,`.''T SYST24S"
BY r3aTI0~1aL ASSCCIAIIO`3 OF HCME 3tTiLDERS R;SEA.RCH IsiSt^3':'U n'
1. To tue accs-ocab? e to FrU an3 VA. a cowmmunizy systzm ,us L cc-.►a? yws tn zlI s ta -l-e ar_d
loczl laws and reg.:lati ons ar.d be appi oved oy the hsaltn zuthorl'-i ties. Permar.znt
riainter.znce ard cenLinuous use an3 ope?3t-ion must also Ire zssured.
2. Of the 12 state hsalt'n depts, visited, in the stuay, all were off' the opirion tr_at
ths operati on an3 nairttenancp of cor-mur.i ty se-yraragne sys .e;ns are mors satiszactory
xhen Lndzr thn contrcl oi sone govsrmental agercy. This klnd o= govar.+~;~ental
organization is n? r_dm-zory in ? oi t'ne 12 stz.tzs visized.
3. The cost of septic tank sys-tans varies frcn abouto $150 to $700 rei house.
4. 31cst donastic sewage stabilizz.tion ponds (lz~ocrs) in the U.S. ~e desiflnAc: on
the basis of 30 to 60 houszs per acre of nond surt'ace area.
5. D-veloz-ers shoul3 rsta? n a car_sul-ting sanz iz.ryr er:;in?ar! nry firm to sup-?l.f
tec'nnical advicz necessary for tha nroject desi6--n, Major Drohlems Ith3t .4i?I
eonrront tha e:a;ineer includz rel3ting th.= possi a?.e oowth ratA oz" the project
or the rate at •.~nich the hor~es •ll c~e so`ld ts~ the design o~ zha sg~~ragP xacf,l.3, Lie-s
so th?t i~ xill f!"unction sa-tisfaetorily and economically at ezch stage ef tne
subdivision de•rslorMQnt. '
6. The FsiA has its oin forin or trust dDed where the s;/sten is to bz o.rvne3 tr,f-a =Ivata
corporation fvr pioiit. It aiso has special provisions for the cnar~e~- o~ a p_o~~y
oT•mers' association.
DOUBL STAINMRD IY PzZOPMEl7 SPM-0"E, CG'J~i"i'Y WkS~r.IWER DiSPOSr`.L PJLTCY (raS wAS
REJ: C~~D BY lct:-; B4APD Ai'iD FRES:EVl REC-S. WER:. AD0,_,D)
PU3LIC SEWEIAGE SYSTE'"IMS SINGME (Vj\rrR SE*,4E;.:NG:1_; SY371EINZS
lo Prelinirary p13ns nu~ ~b-a dorns by a 1. Przli,-nir.ary p13313 z.,y b-a dons u^de, suP-m;-
lic.ensQd envinesr. vision of zn engina-er.
2. R2qufre a public m&o entity. 2. An ir.dividz:.a.l or corpQ=-:ion ~ f m? o.
3. Plo nultie-e hooicups a11o 4ed, 3. Some nul tipls hoo'cars allowed, .
4. No xet Hells* for pu.pir.g stations. 4, rtay uss wat We.lls# z"ar ~•.z_ping st~t0ians.
5. 411 welin. p].zr.s ;o to state S. Sois prelin. plars go to sta.te agez^iea
a~v YIv 3ZS 1 Or c~.nC~ O~laZ • 1 Qr Zpp: tT/a1 .
b. Stiall r,aKs tests and kaep records 6. No nsntion of Jt-vestirZ or record-kaaDi rg.
necess3r3► for proper opertion.
ReqLi.re eassnents or ri;it-of-way No easenen t or right-oL -•,ra f require_d far
ior collec4ors and late-z-a-ls, collactors and latera.ls.
* In wet j.ells, pLLmgs are su ma ozd in seaa~e preszn~ing hsalth an3 m3.i:~ter.~*~cs
problens for those respoasible for rep-irs.
\ `
t.• _IVED
.
vELj OrFICE OM COUiI Tf EEIGItiEER 31977
~3 1977 SpokanQ County, lJashington
c•
~
Date Seote,nbpr 13. 1977
Tp; Board of County Coomissxoners ~
•
FcZOi4I: Utxlities Section, Enc~rineerinlg Department
~
SUBJEC i: J. 11onican, Questions on Midilome Hearin ; '
This departaent will attempt to ansaer those guestions which pertaiu to the eagimeerinn
aspects of the riidilome seweraoe s stem as submitted ta the Eoard by Joan Honican.
Questions numbered 1 6, 72 (V 9, 14 15, 16, 0 and 26 Would best be answered b
; y
governmental agencies other thau the engitteering departaeat. -
Throughout the list as submitted, reference a.s made to a 170,000 gpd package treat-
menC plant. The First addiCion of Midilome that has been platted will only produce
20,000 gpd of sewage but the plaat proposed for construction wil.L be capable of
treating 45,000 gpd (which would :~erve the second aidition). _The total developmertt '
of the 160 actes woulcl probably need facilities for 135,000 gpd. However, the
Planning Commission's minutes reflect that the total developaent "is scheduled to
take up to 10 years and posszbly more.....".
- The Following numbered answers listed below correspond to the rcumbers submitted by - ~
J. Honican:
l. (ahswer by others)
2. The contour map as subr.irted 3y the developer does not iudicate that ,
_ a "severe drainage problem" exists. '
3. Septic tanks are primary treatmznt; the prvposed installatioR would _
- produce a secondary treated efFluent. Available depth of infiltratioa '
_ is menCioned in the Crosby report and the Corps of Engineers study.
The County presently is condueting a`208' study also.
°4. The plant will not remove the chemicals but, far that matter, neither
w ill the septic tanks.
^ .
S. Normally 10 foot separation horizonCally with the vertical distance
_ varying with depth of sewer lines.
6. (answer by others)
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7. (answer by others) . ` '
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'tU Loa rcl r>.C Cocinty Camniss Loners
I4:t) 1 UCt11Cl,_5 SecrLOn, rn€Lneerinp DepartmEn[ -
St113.i CG C: J. }iunscvn, Questions on Mldilv-,ia f(earing `
St.-isten-uec 13, 2977
2
8 (answer by others) y. (ans•.rzr by others)
10. The I[ealth District reoulations are minzmum cr~.teria; [he Couaty
Enginzers' regulations can be more stringent where experience
indicaGes it is necessary.
11. Vzra Irribation and others are aware of the County pvlicy and
have been f or sevecal years. - The Couzty wri.ll only assume
0'b1I of plants if no other governmznta.l aQency will. 12. An itemized dollar amount listing expenditures over reveRCSes
fro;n sewer plant and lagoons is not readily available. TE►e 1977 budget For Utilities reflects a$100,000+ revenue iteca
from the General fund. However, this figure is nct for the
rexclusive use of operatin$ treatment facilitiES. Also included
3,n this expenditure are Fucility studies (Nec,rman Lake, and '
North Spakanz FacLlities Plan), checking plats, storm draiaage -
design and inspections, answering complaints, writin ; reports
such as this, etc. ~
13. The' drainfa.elds xn EU.oha have not been replaced Ccvice, only
once. '
The leach beds at HYllsva.ew are functi.oning as designed. Additional.
drainField work will be necessary, as expected. Pain`ed Hills
secier p1anC storm draina;e is de9igned ta protect the plant
f xom f looding . Maint enance of the drainage f acllities will b e
necessary, again, as expected. Painted Hills drainage has not -
yet been completed or accepted by the County.
14. (answer bS• otliers)
,
15. (answer by others) ~
. - - '
16. (answer by others)
i
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17. The size of the plant taill not. be known fot some time. The initial
construction is fvr 45,000 gpd. The County presently operates 4
faCilltle5 1arger than 45,000 gpd capacity. Even if the 160 acres
were developed totally it would not be the largest plaat the Countp ' -
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FRO'l Uti LLt Lr', SectIoI, Englcieerlns Ucp srLtnent - ~
SUf',1t.CT. J. }to iican, Questionr-, o-Li iildilone llaar.Lng
SeIpLc►mUzr 13, 1911
Pa;-;c 3
trould operate. ThA bouadaries of the aquifer have noC as yet 6eeR '
offlcially deteruiinad. This is preserctly being done by USGS for
consx.decation of "Sole-Source designation".
18. The amount of sludge produced annually will depend on thz number _
of users. Each person will contrabute approxinately 0.4 cubic ~
foot of sludge annually. This sludge cJill be disposed at the -
Valley Ford disposal site. This site is inspected ard approved - e
by perait from the County Health District. ~
19. The plants are enclosed by a fence, with a locked gate.
20. (answer by others) 21. The M b 4 agreement is written for total maintenance of the sysreo. 'This includes the lines in the streets, the plant itself, and -
where necessaty, also the grounds.
The plant, as designed, cloes not produce methane gas as a waste
producC. _
r
• 22. The proposed desa.gn, as submitted for the first phase only, i.ncludes
enough area to accommodate the 45,000 gpd plant and drainfielcl.
The area set aside for phase one is 2.8 acres. However, as the Znd
and 3rd phases come on, sufFicient additiarial land will have to ba !
set aside ptior to approval of any expansion vF rhe ttea`mer.t --facilities.
23. Regarding the '208' study, no. However, the USGS wzll be conduct-
ing tests with sensing devices at a location to b e determined by them.
24. The use for blowers, pumps, yard lights, heat, etc., is estimated
at 43,500 I.4 lioutslyear. There is one liFt station proposed for -
the first phase. No chlorination required. Space for one
teplacenent field is all that is required by Health District
regulations. The deficit cost figure a.s $7,800 per year or
at such ta.me as 118 units are hooked up. Bonding is a requi=ement
of the 0& M agreement.
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TO• U-naccl of Courity Gumi-azsss.onErs
jR& Ctta.l iticS SLC.tion, L'n~ineaci~~~ I~e~~~~rt:rectt _
SUE,.iECC J. HonIc.-in, Questions on i[idilumc Rearin;
_
Septc.•lber 13, 19l7
1'a-c 4
25, pry lines are feasible. The developer is constcucting s treataent
plant at his own insistance. Had he chosen to go with septic
tanks and dry lines it would have been acceptable to the County
Englneers.
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26. (answer by others)
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OfFiCE Of TNE
SPOKANE COUNTY PLANNING DEPARTMEfVT
1• w1 .
Dote 19
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Tu BUl.rd Ul (.'ouIIL ~ Cntiuu i ~~Laner~~.
.
From Rubc•.t t J. BvUint cl,a r~ i 1 1977
_
Subject J, 110lii(.,Jn, _QueUtinn:~ on Nildll.ome Reliearin, of Seph.. Pi, 1977
T will attfampi, to respond to que0tians G, 7, 9, 15, 16, and 26 o1' Elrs. [loitic.uis
rectueGt dated September 8, 19''1?. It, xs f~~It tllat tlie c eniain-Lng 20 quesLlonz, could
be besL answex ecl by another department having mni eeipps tise in tlzore t ielcis.
6) `i'he cancU.tion approvat for Midilomc Addition requa.recl tt« Sutym ittal af a
water ytan to thio, off-.ce approving the waEex s,ys}.em. TtYC Gondi l.lon in parr x nquix ed
approval by the lo(.al surveyor (14odel Irrigatioii), ttie local f u edLstrict, aiid
Scate and County Health Authorities. A copy of vald water plan ls containod in the
Midilotne file.
7) To the best af m,y knowlerlge a1.1 "c,hmiges in (.onditlon" o.f a previously apPrQVed
applieation have been properly processc:ct and tiearcl by eAliei' rhe P1.a.IlIl121g CUItlIi11G610r1
or the Board of County Commissionsr The adoption of a cubcllviszon oxdinance rroulei
help clarify this problem, however.
9) RCW 58.17.150 (1) requires that a11 SUk?Cllv151oItu Gubrnitted tor final dppTOilal
contain a statPment from the local health departrnenL ac I;o the adequacy of tlie prvposea
meanu of sewage ct1Gpo.->a1 and water supply. I believe wu are in Comptlance with ttiis
statute.
15) Ttie staff of ttie Flanninfr, DepartmEnt 1r, e•r,rlorxng tiie possibilitiee of modifying
conditzons of approval to better define apprapzlate agencie;G.
16) I believe that certaYn sections oF the State Ylat ting law (RCW .58.17) protlLbi t _
const.: uction o,C :uty type until suclt tirr►e as final appro wal ls given. Possibly a
condition of approval to that effect migl1t bQ usefiil. Secondly, adoption of a
subdsvision ordinance would mitlgate the problem, also. ,
26) I, myself, am not entirely clear on the proviaiuns of Initiative 275. As far
as this office 3.5 caricerned, all infarmation relata.ng to platting and zonlng ia readlly
ava.3.1ab1e for publlc inepection and rPview. Trae lnformatlvn ib ko-pt in a maruier thaL
allowo easy retrievc-Ll., also.
If the Board has anf further questionr, please don't hesitate to call.
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MEMo
T0: Jerry C. Kopet
From: Robert J. Bethards
Subject: PE-1102-76, Midilome Addition Ietter of 10/5/76
Afs you may recall Mrs. Rollie Honican has requested that we reconsider
the issuance of a propased declaration of non sigraficance. The following
is my response to her remarks:
1. The drainfield area has been approved by the County Hes1 th Distri%-It.
2. The plant design, drai.nfield area, etc. have all recelved the proper
approvale.
3. Chapter 90.4$ RCW addresses primarily surface waters and the local
office of the DOE believes that this Chapter does not apply to this
particular case.
4. Hearings were held on the matter, th at I believe, did allow for
both "due process" and an "appearance of fai.rness".
5. Waste Discharge Permits are not required for these systems according
to DOE.
6. No comment.
7. The plant is Protected as best as is economicallY feasible.
8. No comment.
9. Once aga3.n the site kas received all the proper approvals.
10. No corament.
11. No comment.
I am also enclosing all pertinent correspondence including a report supplied
by the Health District i.nclicating that they believe this system to be an
upgrade.
_-i
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DEPT. FILE REF.
~ '
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STAFF REVIE`IV OF ENVIRONMENTAL CHECKLIST
I. In accordance with the Spokane County Environmental Ordinance and WAC 197-10,
an Environmental Checklist has been submitted by the applicant or hfs agent.
This checkli t and ny a ditional pertinent da a has subsequently been reviewed
by the ~ ' .
The following data briefly describes the proposal:
• .
A. Action Requested: ~ ~ w~~^ ~ Ull1s
~
c~ Q- ~~c/ S ~ •
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B. Descr iPtion of ProPosal: tti~ ~ ` 1, u-•~ 2lGutl
t~~ l~ ~~.5► s~ ` - w -
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C. Location of Proposal. . &J, c. mr
~ .
II . Review of Checklis t:
A. Slighk adverse impacts are noted under the following questians:
' INC . ~ ~ 3 jiL t -j iz 3
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(Over)
B. Potentially significant adverse ~T!~;~,~1Ct^ ~rp Pr? LinC?pi' t.".,('
questio?z:: ' ~ - -
C. Discussion of impacts identified abo•~7~~ :
III. Conclusions and Recommendations:
B sed on II A, B and C above the taff C~ _ 2~,'2~21rtrj--
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THRESHOLD DETERMINATIOiti
~ . ,
D EC IARAT ICJ?J t) F
(propo /final)
'A3 1 i•';1
~C'i~~ SZ 1Ci'~C2-V~C_e..
. ..til l .1i'._. Jwl H t •
(signfficAce/nonsignificance)
2C'`rS
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1. Description of Proposal: 5uUu1S.,&t• 20(N5
C. ~
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~ ok) 9 . ~ AujCLLV~t W~
2. Proaonent:
3. Contact Person: Phone:
3, Counry Action (s) Requested: ~rtlJt~. ~ ?
c ~ Lt'IA
4. Location of ProPosal: Jp-
. ~
Pa~ Lu. Se~ • 3~-Z~'-~~ , i~ ~ UAX-A,
►
5. Lead Aqency: SPOKANE COUNTY, WASHINGTON
This proposal has been determin d to have a significant adverae impact on
the environment. An EIS is required under RCW 43.21C.030(2)(c); This
decision was made after review by the County of a campleted environmental checklist
anci oth--~r informa~iun on file with the lead agency.
6. Responsible Official:
Proposeci Daclaration: Final Declacation:
(na me ) (na me - ey C-IL
T
s' aue (goatur •
(title C t tl 1IZ ,
de t) FCJo. COMAL\J (de t CL -CO&ENk
da e dat . ~ LfI7
; .
Departmr.nt Reference No. : "P L --76
(See Reverse Side)
r
.
~ -
7. For Declarations of Significance Only:
Date of Expected D-aft EIS Availability
(determined by Rosponsible Official)
Date Entered in "CIS in Preparation Register"
(determined by SIjPA Public Information Center)
To be compleced by responsible official;
a. T3rief ciescription and listing of those en,►ironmental impncts leading to such
declaration:
h. f3rfef explanatlon of what measuces, if any could be taken by the applicant to pce-
vent or mitigate the environmental impac-t of the proposal to such an extent that
the responsible officlai could consider << revised proposal with a posslble re-
sulttng declaration of nonsignificance:
B. For EMRose4 Declarations of Nonsignificanc:e Only:
l / Date Entered "Proposed Dzclaration of Nonsfgnificance
Reqister" (determined by SEPA Public Information Center)
Date comments to be received (15 day review period)
(determined by SEPA Publ.ic Information Center)
9. SEPA Public Information Center:
(For departments of General Government only)
Approved a s to form
( ) Disapproved as to form
Reasons: Signature of SEPA PIC Officer;
I Date:
.
' ► ' ~i~, . i ~~7 i I ~ ~ .
SPOKANE COUNTY PLANNING DEPARTMENT
•Ar ,'FF~E •PUBIIC WOitKS BUILDING N. 811 JEFFERSON STREET
D1r
il t~ PHONE 466-2274
` J~i~ A ~ -d• ~
SPOKANE. WASHINGTON 89201
M E M O RA N D U M
T o: a) SfO, GO."(Fd~4 VIS"I'RIGT. ~ Ds 4S Q pcF-
aTrM'. 1QAAS051cC,E AT7'N : SEVALC R.AMr A?r90vAL5_-3 '
~
F R O M: Spokane County Planning Department
North 811 jefferson
Spokane, WA 99201
509-456-2274
Attentf on: ODE`J M
R E F E R E N C E: Lead Agency Designation, Proposed Declaration of Non-
significance, Environmental Checklist, etc.
Pursuant to WAC 197-10-203 (3), the Spokane County Planning Department, a
division of Spokane County, has determined that the County, as an ACTING
AGENCY, is the LEAD AGENCY for the followfng project:
- I0 o2
The following is explanation for thts determination:
\A14 C 19 -1-(O-72C~
InfotTnation on file concerning this proposed action indicates your a-,jency to be
an r'1GENCY OF jURISDICTION, WAC 197-10-040 (4).
Accordingly, if you wistz to _exercis:; your option ta review and comment as pro-
vided in WAC 197-10-340 (5), please be advised that the proposal was listed
tn the SEPA Public Information Center on:
77
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No o ' I 1 490
AEF7RE THE B4ARD OF COUNTY rQMMISSIONEkS OF SPOKANE COUNiY, '~IA►"~HINGT7N.
ZE- 34-- 76
IN 1HE MATTER OF CHANGTNG THE ZONING }
MAP FROM AGRTCUL?URAZ TO SINGLE F.-MILY ~
RESIDENTIAL CR-1) on PRGPE Rt'Y LX ATED IN ~
SECTION 33, TOWNSHIP 25 N., RANGE 44, EV'lIfl R E S 0 L U T I 0 N
S:'C It'} i~'E CC u NT'`, V1'ASHIINGTON. )
)
)
)
The above-entitled matter coming on regularly for hearing before the Board of Caunty
'%ommi6sioners of Spokane County, Washington, on thi6 day, and it appearing to the
Board that the Spokane Cownty Planning Commission has given due notice of the hearing
on the matter in the manner a.nd for the time provided by law; that said P7.anning
'_~,numission Yias hAld a public hearing as required; and that the said Planning Cammission
~or.r~Y•~•:. ; t, t.r,-! 111.Fil, fio 'J.oYiP t.Ylri fo7 ]_o•v,ing described propPrty as:
SIn~ ~~L~ I'AvULY RESIDENTIbL (R-1)
i=11 of the plat of IvildltaMe Adaitlon, Section 33, Townsbip 25 N. Range 44, EWAIA
Spokane County, Warzhington.
Ii01+1, TtiERYFORE, BE IT RFSOLVr,D, that the above-describe3 property be, and the same
lLei-Phy is zoned under the classification of
as defined in the Zorting Ordinance of Spokane County, adopted August 25, 1953, as
acrended e
FASSI)ED BY THE BOARD i'~iTS ~j DA Y OF
:
L``1'FST : BOARD OI' COUNTY COMNII SIONERS
vE?NOIv HLAND OF SPnYANE COUNTY, wASHIivGTON
'•C erk the Bo
1
ily:
PUty 1ERaY t KppET', CNM.
HARRY M. IARN
This is to certify that this is a KRY~ ~ CHRISTEN-SElf
true and correct y of
Resolution No.
passed by t Boax-T this
aay of
.
sy:
ep ty
.
I hereby certify that I have posted
the above changes and revisions on
the Zoning Map in the Building Codes
Department, and do further certify
that the zone classification change
is the same as described abovE and
shown on the attached map
SIGIVLD: ~
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Ti0 • ~ ~j• BEY'Onl".~ li'ir, BrJr,~ . J. i'1 : . .,1 . , .i:....__., . :
Pti-lOO6-7V
IN THE MA1'PER OF THE FILTNG OF THE
F'INAL PIAT OF M3DUADrlE ADL[TTON
o,
LOCATED IN S EC 17ON 330 TOWNSHIP 20
RANGE 44, E.W .IL, 8POKANE COUNTY'
WASHINGTON.
BE IT RESOLVED AY THF . - -,,T• . , _ : .
~
sIi
Prbperty located ia the West 1/2 oi the NE 1,/4 of Seatioa 33, Townahip 25 N.,
Ranqe 440 Spokane Caunty, Waehtaqton*
c;iore precisely described in the plat dedication, on t7r: rc:commer,dation of the Sgokane
County Planning Commission, be, and the same hereby is approved, with the exception
that the public rights of way dedicatcd in this plat --ii11 not be established for
maintenance purposQs until the County Engineer has certified that the roada havc
been improved to County standards and approved by c. separate resolution oi the 8osrd
of County Commissioners.
PASSED BY THE BOARD THIS ~ I)AY OF , 19
BOARD OF COUNTY COMIIMISSIONERS
Or SPOI{APTZ-4 COU`;TY ; WASHII`jG'I'ON.
. 1ERRY C. KOPET, CNM.
~ LARHED
RAY W. CHRISTENSO
A`I'TEST :
VERNON W HI,AND
Cler the Bo
3y:
D~.~puty
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LAW OFFtGES
DEMr1Wo, RuaaaLr & scrlr.oEuHK, r s
R09ERT D DEl4WO 1016 0LD NnrioNAL aACVK euIloING
KERMIT M. RUDOLF SPOKANE, WASHINGfiON 99201
RICHARQ J. SCMROEDER (509) 624-4291
TERRY W MARTIN
TERRY 1' GRANT
Apri1 5, 1977
Spokane County P1 anning Commi ss i on
County courthouse
Spokane, Washington 99201
Gen t 1 emen .
r1odel Irrigation District No. 18 has revietived the final plat
of Midilome Addition and the same is satisfactory to tiie district.
The lots shown on said plat have been annexed to and are a part
of the di strt ct, and are entitl ed to water service frorn the district
upon installation by the developer of the mains and tittings shown
on thz plat and upon payment by each lot, at the time of connection,
of the equalizing fee specified in the order of annexation wiiich is
recorded with the Spokane County Auditor as Document No. 7702160018.
The uti 1 i ty easements shown on sai d,-~l t are sati sfactor to the
district.
~
,.~-Your r. sp ctful ly 41`,~' ~
KMR Jb B1i:~ Kermit M. Rudol f
~ Secretary
PV9ode1 I rr7 gati on Di s ict #1 H
~
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6
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INLAND POWER & LIGHT COMF'ANY
A'pri I 1, 1977
Spokane County Planning Commiuion
Spokane County Courthouse
W. 1116 Broadway
Spokane, Washington 99201
~
Gentlemen •
Please be advised that lnland Power & Light Company has been granted the
necessary easements to provide electriccl service to Midilome Addition
located in the W'-z of the NEQ of Section 33, Township 25 North, Rcnge
44 E.W.M.
5 i ncerely yours,
INLAND POWER & LIGHT COMPANY
George G Carey
URD Superintendent
GGC/sc
r S" 3 z0 5` :UnC nV- 11 z ai U-c tA t°F V A'S IIIt+IGTC1h! :.3~ OZ i'I0 F iSQnI'~7 '1 1
si Prc REF. # PI PE t7oZ~7s
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" 1k THRESHOLD DETERMINATIO
--~-~ek
D LCL:',II,i
(oropc~sed/fi«.sl)
: ~.:~1 .
_ -
(sigiiificance/nonsignificance)
i. Desc-::-tption of Pro~,asal: SubDIVIS(OPI v Z." Acu~ OE 1.4,~~
I btf-a--
2 , Proponent: t0b1~.~' TOMLJ f►1S~Il~
3. Contact Person: Phone:
~
3. Cnunty Aetion(s) Requested: L.4RMAL PlAr'7T ZONe
-1 , Loca L'i-on nf Proposal: SOVT~ 0~ 3Ze D►V E (%T1/OMV
. Ledd Aqency: SPOKANE COUNTY, WASHINGTON
This proposal has been determined to NCT have a significant adverae impact on
.►_he environment. An EIS is required under RCW 43 .21C .030(2) (c) ; This
iecision w3s made after review by the County of a completed environmental checklist
,+nci othpr informal.io~n on file with the lead agency.
. Rc,~ponsihle dfficial:
I'rupos:;d D :~c3aratton: Final Declar.3tion:
(n ( a me
.
(si4nature (Ec~iature . ~
(tit2e) title 1 0
AA.
d(deiptj (de t PLAWO i
da p) , (date) 7'
Dapartm~~nt Reference No.: PE-1002 ~ZE -34--yG ' j
(See Reverse Side)
J
. I
For Declarations of Significance Only:
Date of Expected D:aft EIS Availability
(determined by R-sponsible Offtcial)
~ f Date Entered in "CIS in Preoaration Register"
(determined by S CPA Public Informatinn C?nter)
To be completed by responsible official:
a. Brief desr.ription and listing of those en-ironmental impacts lec+ding to suc•1-1
declaration:
b. Brief explanation of what measuces, it any could be taken by the app!leant to pre-
vent or mlttgate the envtronmental impar.t of the pmposal to such an extent that
the responsible officlal could consider u revlsed proposal with d possible re-
sulting declaration of nonsignificance:
B. For Pr2posed Declarations of Nonsignificance Qnly:
Date Entered "Froposed Declaration oi Nonsignificance
Reqister" (detc:s-mined by SEPA Public Informa[ion Center)
Date comments to be received (15 day review peKod)
(determined by SEPA Public Information Ganter)
9. SEPA Public Information Center:
(For departments of General Government on)y)
( ) Approved as to form
( j Disapproved as to form
Reasons: Signature of SEPA PIC 4fficer:
Date:
Pacific OVorthwest Bell
March 12, 1977
Spokane County Planning Commfssion
North 811 Jefferson Street
Spokane, Washington 99201
Dear Sirs: it,
The Utility easements ahown on the FINAL _ plat of
` MIDILOME ADDITION, FHASE I are satisfactory to the
t.._ .
Pacific Northwest Bell Telephone Company,
~
G. D. Fleming
Ra.ght-of Way Agent
North 904 Columbus Street
Spokane, Washington 99202
GDF:nf
cc: Clarence E. Simpson Engr's Inc.
Attn: Dick Simpson
N. 909 Argonne Road
Spokane, Washington 99206
R E C E I V E
MAR 41977
SPQKANE COUNTY
PLANNING DEPARTMENT
SV A M I k jc 9
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~
First American T-itle Company o f Spokane
MAIN OFFICE ESCROW OFFICE
West 704 First A venue North 8611 Divrsron • Surte B
Spokane, lUashington 99204 Spokane, Wasllmgton 99204
Phone r509J 456 OSSO Phone (509) 484-1600
r
County Planning Commission
County Courthouse Re: Order No. 12901
Spokane, Washington Proposed Plat of Midilome Adt
This is a report for plat certificate as of March 7, 1977 at
8:00 A.M. covering the following property:
Beginning at the North quarter corner of Section 33, Township 25
North, Range 44 East, W.M., in Spokane County, Washington; thence
South 89°47'00" East along the North line of the Northeast quarter
of Section 33, a distance of 820 feet; thence South 00°06'10" East
a distance of 477.0 feet; thence North 89°47'00" West a distance
of 30.0 feet; thence South 00°06'10" East a distance of 195.0 feet;
thence North 89°47'00" West a distance of 260.0 feet; thence South
00°06'10" East 1,113.09 feet to a point on a curve with a radial
bear-ing of North 06°35'43" West; thence along a curve to the right
with a radius of 1,096.59 feet and a central angle of 6048143" an
arc distance of 130.38 feet to the end of curve; thence South 00°13'00"
West a distance of 60.0 feet; thence North 89°47'00" West a
distance of 9.55 feet; thence South 00°06'10" East a distance
of 135.0 feet; thence North 89°47'00" West a distance of 390.0 feet
to the Westerly line of the Northeast quarter of Section 33; thence
North 00°,06'10" West a distance of 1,987.84 feet to the North quarter
corner of Section 33 which is the true point of beginning, EXCEPT
the ra.ght of way of the County Roads along the North and West lines
of said property.
Record title is vested in:
As relates to: The East 10 feet of the West 30 feet of the North
1987.84 feet of the Northeast quarter of said Section 33, and also
that portion of subject property lying South of a llne drawn parallel
to and 739.8 feet South of the North line of said Northeast quarter
of Section 33, is vested in EMMA HAWKINS, A WIDOW.
As relates to: That portion of Subject property lying North of a
line drawn parallel to and 739.8 feet South of the North line of
said Northeast quarter arid South of a line drawn parallel to and
337.7 feet South of the North line of said Northeast quarter is
vested in EDGAR BUESCHKE AND LOUISE E. BUESCHKE, HUSBAND AND WIFE.
*CONTINUED*
Affilrated wrth First Amencan Trtle Insunonce Compcrny
No. e? 2901 '
Pla;c Certif icate
Page 2
0
Vesting Continued:
As relates to: That portion of subject property lying North of a
line drawn parallel to and 337.7 feet South of the North line of
said Northeast quarter, is vested in MIDILONIE INC., A WASHINGTON
CORPORATION.
Subject to :
,
1. GENERAL TAXES:
Year: 1977
Amount: $2,688.68
Tax Account No.: 33541-9001
Affects: All the Nor,theast quarter of Section 33
2• Reservatian contained in Patent from the United States recorded
September 12, 1894, recorded in Volume 61 of Deeds, Page
566, as follows: ~
Yet excluda.ng and excepting "all mineral lands" should any such
be found in the tracts aforesaid but this exclusion and exception
according to the terms of the Statute shall not be construed
to include caal or iron land.
3• SALE AGREEMENT:
Vendor: Emma S. Hawkins, a widow
Vendee: Edgar Bueschke and Louise E. Bueschke, his wife
Original amount: $107,920.00 upon terms and conditions therein
contained
Dated: April 25, 1975
Recorded: December 3, 1975
Auditor's File No.: 7512030261
Excise Tax Receipt No.: 126156
As relates to that portlon of subject property vested in
Emma S. Hawkins and described in the vesting herein
9• Said Premises lie within the boundaries of Model Irrigation
District No. 18 and are subject to future assessments by
said District.
This report shall have no force or effect except as a basis
for the certificate applied for.
Assistant-Secretary
RB/bf
Charge: $25.00, Sales Tax $1.25
~
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Ap:ii 13, 1976
Board of County Commissioners
Spokane Gounty Court House
Spokans, tiVA 99201
Gentlemen:
Since FebruarYo the Planning Commission has been faoed wlth requests
for Iarge housing developtnents in the Spoicane Valley (i,e o, PE-991-76 for
137 loes and PE-1002-75 for 432 lot9) o The Commission bas become increas-
lnqly unoomfortable usaking dadsions of that m3gnftude wlthout quidelfnes
pertalning to the aQulFero
By motton at our April 9 0 1975 heacing, dve seek a gollcy coordinated
among ail Cauntp departments who9e decgsian3 nighe affect the quality of
the aquiger, that vvould gide guidance for tha Lype and quantity of develop-
saemt acceptable at th.ls time axad would esealbUsh Iong=-range guldeline9 and
a Uraa fraYaework to be follvwedo
NiVe recogrize there are unanswered questtons and naed for further s3ata,
but unquestionably t1ne aquifer ts a natural resource of great significance and
deserves our best efforts, The Commi3sion iaoks farward ro your responseo
Sincerely,
Spckane County Planninq Comrnission
Mrsa I`Ailton Rawlings, Jro , ChaLrperson
GR:cmvv
ccs Spokane County Planning
Commiesion Members
/ o°
►
VlINUTES ,
APRIL 9, 1976 '
PRELININARY SUBDIVISI4N AND ZCNL CLASSIFICATION UPGRADING
PE-1002-76 - CHESTER ADDI'I'ION - TOMLIIvSON
ZE- 34- 76 - AGRICULTURilL TO SINGLE FANILY RESIDENTIAI.
Planning Commission Recommendarion -ftprove the firsC nhase consistinq of
~ 72 lots subiect to the foltowtna condlttons and with the followinq reQUirp-ment
that future plat nrotiosals wirhin this 164 acre oronosal (as oriainallv nronosed'
shall be submittzd in conformance wlth the ent`ire development plan. (Vote unanL.
A , CONDITIONS: ,
1. That the nlat be designed as [ndicated on the preliminary plat of
the record and/or attached sheets as noted and that the sponsor
accomplish the following objectives prior to filing any final plats.
a. Receive annexation into Nodel Irriqation District No. 18.
b. Since the praliminary plat Is to be filed in phases the sponso,
must receive approval from the Planning Director of the shape and
configuration of all final plats.
c. Wor}: with the water district, appropriate heelilth authorities
and ffre district in determining the need for an additional
well site.
2. That a statzment be placed in the dQdlcation to the e#tecr that
no more than one dwalling stnucture be placed on any one lot,
nor sha.ll any lot be further subrllvided for the purposes of creating
addlttonal tots or butlding sites wlthout filing a replat.
3. That the plat provido for right of way width for streets as indicated
on the prellminary plat of record.
n. That apnropriate provision be made that the following descrLbed
property be hQld in trust until the continuatlon of the streets be ~
dedtcared or deeded: A 1' strtp at ~he ends or edges of all streets
tha t terminate or border the piat bounclary. (Tempvrary cul de sacs '
are required when streets terminate at tho plat boundartes).
5. That appcopriate street names be Lndicated.
- 19-
/
•
PE,-I002-76 - CHEST'ER ADDITION - TO1ViLINSON (Cont'd)
6. That appropriate utility easements be indtcated on copies of the
approved prallminary plat for distribution to the Planning Department and the utility compantes. Vliritten approval of the
easements by the ukility company must be receivod prior to the
submittal of the final plat.
7. That a plan for water facilities adequato for fire protection be
approved by the water supplier and fire pcotection distrlct. Said
water plan must also have been approved by the appropriate
health authoritles. The health authorities, water supplter
(purveyor), and fire proicection district will certify, prtor to the
filing of the fLnal Flat, on the faco of said water plan thar the
plan is tn conformance wlth thetr cequirements and will adequaEely
~ satisfy their respective needs. Satd water plan and certification '
will bo drafted on a transparency suitable for reproduction.
The watcr su licr urvc or w 11 a lso certif r or to the filin
PP ~A Y) ~ Y P i g
of the flnal plat on a copy of said water plan that appropriate
contractual arrangemc:nts have been made wfth the plat sponsor
for constnictlon of the water systom, in accordance wtth the
approved plan, and tn accordance with a timo schedule. The
ttme sehedule wtll provide, In any case, for completion of the
water system ancl inspection by th~: appropriatc health author-
[ties pnor to application for building pcrmits within the plat.
The coneractual arrangements wi,ll includQ a provision holdtng
Spokana County and the wator supplier (purvoyor) harmloss
from claims by any lot purchaser reiused a bullding permit due
to the failure of the plat sgonsor to satlsfactorily complete tho
approved water system.
The plat dodicatLon cvill contauz a statemont to the effect that
the public water sysrem as approvcd by County and State Health
authoriries a,nd the local firo dtstrict and water suppller (purveyor)
will be installod wtthin this pial, and the subdlvider will
ncovido for individua 1 scrvico to each lot prtor to sate of each
lot.
If the wcll on lot 9 block 8 should be utllfzed as a future ~
wc-iter source, soveral lots may n-:cd to be deleted to provlde `
a sufflcicntly slzed w.;ll 5ita. Ix tlie wcll is not utilxzed then
prtor to ftling the ftnal plat :ontaining the well sire, the sponsar s11a11 seal off the well subje ;t to -Lipproval by the appropriate
health authorities. ~
NOTE: The Spokanc County I vilth Distrlct has determined thati
the soil conditions in the pla: ire suitable for on-site sewage
dtsposal systems on each lot.
(Cont'd)
` 20 -
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PE-1402-76 - CHIESTER aDDITIQN TOIvILINS01\1 (Con'r) '
8. That a certiflcate of title bQ furnished tho P1annLng Commission
prior ta the iiling of tho tinal plat.
9. That the preliminary ptat be given condittonal approval to
Nay 1, 1977.
10. That streets be improved to standards established by Spokane
County or a bond to cover the cost of such improvements be
furnished the Gounty Engineer. The bond may also cover the
cost of "as butld" plans, engineering costs, and placing of
final center lino monurrients.
~
11. That proitles of streots, cross sections, proposed gcades, and
drainaqe plan of the plat be submitted and approvod by the '
County EngineQr and by the Planning Director before the final
plat is drawn. Prior to accentance of the improvements or roloase
of bonds, a certffica'te by a rcgistered civii engineer or licensed land survoyor will be required indLcating that all improvoments
have been in5tailed to the lines and grades shown on the
approved construction plans.
12. Conditionat approval of the rlat is given subject ta the dedication
oi the right of way ro the public and approval of the coad system
In tho plat by the County Enqineer.
Tho sponsor must provide full wtdth rlght of way for 40th
Avenue, Pines Road, and 32nd Avenue. If the sponsor cannot
obtain 30 fect of right of way for 40th Avenue from the adjacent
property owner to tho south, the plat shall be altered slightly
to accomodate GO feeC for 40th Avcnue within the proposal.
The dedication shall contain a statement prohtbiting individual
lot access to 32nd Avenuo.
13. That a namc be indicatod boforc the final plat is filod, such
name to be appravid by tho County Assessor and tho Planninq staff . B. ANALYSIS INCLUDING ENVlRONMENTAL ASSESSMENT: Tha proposed plat is located south of 32nd Avenue and bounded by
BowdLsh Road and Pines Road in tlzc, souLhern urbanizing pottfon of tho
Spokane Valley. Tho proposed pl~t conststs of 432 lots on 160 acres
for a qross densiry of 2.7 dwa.liine linits per acre. Tho lots averaqe ,
approxa:matcly 12, 500 squarc i,it of area which ls 2, 500 square
feeC more tban tho required minimum yize of 10, 000 square foet.
(Cont' d)
_ 21 -
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' PE-1002-76 - CHESTER ADDITi4N - 1OMI,INSCN (Cont'd) ' The pmperty ls cunently being ukilized as farmland and is without
any structures. The CGpography !s generally flat in nature and the
drainage should be adequately handled by the street drainagQ system.
Proper consideration has been given to the exlsting well site. If the .
cnroll stte is to be utilized it shail receive proper roview and approval '
from the appropriatc healfih authorities, watcr supplior and firo dlstrict.
If it ls not utilized it sha1.1 be required to be sealed off to protect the
water sourco from Pollutzon. The proPosed water supplier ls confident
that an adequaCo system can be developed for the plat. Tho Caunty
Health District has approvod septlc tanks for all 432 lots since the
soils and taNpography are suitablo for drainfield sites.
The ncighborhood has developod similarly to the proposed p1aC to
the north, and the west. 1hESe lots outside of the Plat range in size '
irom a minlmum of 10, 000 square feEk tc approXimatr3ly 13, 500 square
feet. The new Chester Etementary School is loca[ed dfrectly across
Pcnes Road east ef the plat. The Ccntral Valley School District controls
50 acros of property in this Imrmediate area which includes a future
site for a senivr high school. Tho Schcol DIstrict has cantrol of
appraximafioly a 12 acre sito south of 44th Avenue and east of Sands
Road. It is feit by the staff that sinco the plat will be ftlod in phases,
very possLbly taking 5- 10 years c-r morc: to iinaltze thQ ontlre pralim-
tnary plat, thrat there wi.ll be suilficient time fcr the schooi district r
to prepare for adcllttona l students from thls devolopment, The Park
Doparement has indicalod adoquate park facllirios wlth tho school
site across Pines and a new 8acce park site on the northeast cornor
of 32nd Avenuc and PLnes Road. The staff has worked exrensivQiy
with lhe 5ponsor on the desiqn of thc proposed nlat. The plat provides
for an east-west connector frarit B~~ ~7dish Road to Fines Road which ean
oventually serve as a lLnk in the toial connector from the Dlshman-
iviLca Road ta Statc Highw3y 27. It should be mentioned that at the
prosent time the County Zonfng Ad)ustor is considering an application
for a conditianal usQ permit and a variiance to allow an 80 acre
cometary slte en the souehwest carner of 32nd AvenuQ and State '
Htghway 27. The plan ca i ls far a right of way on the south edge
whLch wau.ld be unather lln}: in the east-west connector be tween the
Dishman-Mlca Roaci and Stato Hrghway 27, The plat providQS good
circulation thraughaut tand especially to the olementary school. All
lots wiIl have excellont access fran the streets to the building sites
since rhe topography is Irairl;r flat. Lotr. wcre double fronted on '
32nd Avenue slnce it is classified as a secandary arterial. Therefore,
elirnlnating d4ngerous driveway aFproachos from individual lots onto
the heavily used street.
(Conr'd)
- 22 - ,
. . ~ ~
a
PE-1002-76 - CBESTER-ADDITION - TOMLINSON (Cont'd)
,
• The staff ts of the opinion that if the pre limtnary plat were approved
and developed to the above stated conditlons, tne proposed plat would
not have any grzater effect upon the topography, geology, btological
~ and botanlcal characterisrics, aemospheric and aquatic conditions and othc
natural development than similar re'sidential uses established in the
area. The fact that the proposed plat is scheduled to take up to 10 years
and possibie more to develop is a significant factor in lcnowfng there
will be time for the necessities and amenitLes ro be developed for this
plar and the surrounding neighborhood. Therefoce, the staff concludes
lhat an environmental impact statement is not requlred in conjunction
with approval of the proposed plar,
Planntng Commission Recommendation. AAnrove Chester Addition as indlcated
on the prellminarv plat of record to the single Familv Residential (R-1) Zone ,
classification upon the filinq of the final plat.
REASONS:
1. The lots in Chester Addition have been destgned to accommodate `
single famlly residences; i.e., all of the lot5 would have at
leasr 80' of frontage and 10, 400 square feet of lot area.
2. The plat is situated in tho Opportunfty Communtty. The Commissfon
has been upgrading similar sized lot developrnent Ln the area to
the single Family Residential (R-1) classificatton.
3. The Single Family Residential Zone prohibits duplexes, animal keepii
orher than household pets, mobile homes, and home occupations.
C. GEIVERAL DaTA:
1. Locatlon: Section 33, Township 25N., Range 44,
E. Vlr. M. 1 he NE 1/4 oi SectLon 33.
2. Sponsor: Robert Tomlinson
Vvest 606 Thirci Avenue
Spokane, V1'A 99204
3. Enyineers. Clarence E. S impson, Engineers, Inc.
IVorth 90 S- Argonne Road
Spokane, tiVA 99206
4. Site Size: 26 5 acrus
5. Iilumber of Lots- 72
6. Land u se proposed by sponsor: SintXlp, sarrilly dwellings ~
7. Existing Zonfng: Agr:cids«ral, esCablished April 11, 1967 '
0. Advectised Zone Upgrading: Sin~~lo. Family Residential (r-I)
9. UV a ter Source: 1Viode I rriqation Company
10. School District: CenCr i'%allcy School District
- 23 -
^t
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PE-1002=76 and ZE-34-76
In the matter of a hearing to consider the application of Robert Tornl-!,nson, West 606
Third Avenue, Spokane, Wash3ngton, to file a ptat ta be known as Chester AdcLition.
Also to consider changing the Zonzng Map from Agricultixral to Single Family Residential
on the property described below, such zone change to become effect3ve only upon the
filing of a final plat, or plats, or such property. The property being platted is
descrsbed as the NE 1/4 of Section 33, mownship 25 N., Range 44, E.bt.M., Spokaae County,
Washington.
(Hetween Pines and Bovrdish and between. 3?.nd and 40th Avenues)
AXFIPA~~ Q-Ej!g.§M
STAl°E OF WASHINGTON )
~ Svu
COUNW Oir SP'4KAA1E ~
. . ^ bein9 first dealy swaM; depose a aeW say s
1°hat sit a111 tiaOemoralaawd here'n he Was p aaW saM jeo a citiasra of The U rited Stete S
areeidentc ag 8pokam CoMM Washflttgtone and over the sge of tvOMy'OnG Yeafs,
Thal On he pateana11Y posIOd thma 13)
gue a" co~ct copies of 4he hereto etMchad N01'iCE OF PUBE.BC HLARiNCa at the
f,Dllawing places an Spolsane Cawft, Ro-wite
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stibSCld~d and BdVoil1 tO lAe
N0"rARY PUBtJC 1N AND F'OR $P+OUNE . COU?M,, WASMNtaT0N
Ra didlng at 5poeamQ MIa sbiftOU0o
t ~ d
1 ~
TE,EPxoluE No. : 456-2274
AGEINIDA, APR.LL 9 , 1976
SPUKKAIdE COUNTY PLANNING COv'IInI.SSION
Time . I'riday, April 9, 1976, 9:30 A.M.
Place: Conference Room A, County Court House Annex
(Use Mallon Avenue entrance)
PRELIiLiIrIARY SUBDTVISION AND ZONE CLASSIT'ICATION UPGRADING
4. PE-1002-76, Chester Addition
ZE- 34-76, Agricultural to Single Famzl,y Residential (R-1)
a. Location: Section 33, Township 25 N., Range 44, E.W.M.
The 1VE, 1/4 of Section 33.
b. Sponsor. Robert Tomlinson
West 606 TYu.rd Avenue
Spokane, Waehington 99204
c. Engineers: Clarence E. Simpson Engirieers, Inc.
1Vorth 949 Argonne Road
Spokane, Wasiungton, 99206
d. Site Size: 160 acres
e. Number of Lots: 432
f. Land use proposed by sponsor: Single family dwellings
g. Existing Zoning: Agricultural, established April 11, 1967
h. Advertised Zone IIpgrading: Single Family Residential (R-1)
l. Water Source: Model Irrigation Company
j. School District: Central Valley School Distrsct
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SPORANE COUNTY ENGINEER
R+OAD DEPARTiMENT
SUBDIVISION SECTION
y
T0: Charles L. Huggias, Director of Planning. DATE: April 2, 1976
FROM: Robert S. Turae=, County Engineer
SUBJECT: Standard Plat Conditions
We recammead approval of the plat of Cheeter Addition PB-1002 & ZE-34776
subject to the following conditions:
that conditional approval of the plat is given subject to dedication of Right of
Vlay to the public and approval of the road syste.m in the plat by the County Eagineer;
that plans, profiles, aad croes,sectioas showing progosed street centerline and curb
grades be subznitted to the County Engineer for zpproval prior to construction and
the filing of a final plat;
that dr2lnage plans and desiga calculations showing the grades and alignment of drain-
age facilities be submitted to the County Engineer for approval prior to construction
and the filing of a final plat;
coastruction within the proposed pub2ic streets and easements shall be perfonaed
under the direct supervision of a licensed land surveyor, who shall be responsible
for perpetuating all evfdeace of the location of survey monuments whicb may be
dfsturbed durfng construction and who shall furnish the County Engineer with "As
Built" plans and a certificate in writing that all improvemeats were iastalled to
the Iines and grades shown on tbe approved constructioa plaas and that all disturbed
monuments have been replaced;
no construction work is to be performed within the Public Right of Way until a pennit
has been issued by the County Engineer. All work is subject to inspection and approval
by the County Eagineer;
all construction within the Public Right of Way is to be completed prfor to filing
the final plat or a bond in the amouat estimated by the County Engineer to cover the
cost of construction of improvements, construction certification, "As Buflt" plans,
and monumenting the street centerlines shall be f iled with the County Engineei%-y,
that the developer provide full width right of way for 40th Avenue, Pinee xoad and
32nd Avenue ;
that the developer dedfcate all righte of vehicular iagress gad egreas to 32nd Avenue,
except at etreet intersectfone.
JD34/ep
► '0
5PO~ANt VALLt(-I FIM DtPARTAENT
svo&we, ~
eww`1[~ 7~ ~Il~1WLLY7 ~ VW~'
= EAST 10319 SPRAGUE AVE. o SPaKANE, WASNINGTON 99206 e TELEPHONE (509) 928-1700
, -
; ald R IlaxG xow e%4 -
~
. ;
~
~
}
April 1, 1976 :
Mr. Charles L. Huggins, Director . '
` Spokane County Planning Commission
Spokane, Washington °
,
Dear Mr. Huggins:
The following zone changes and preliminarysubdivisions have been reviewed for adequate fire protection: f, u ° tr ~ % 0
: PE-999-76 -
. ZE- 31-76 - Mains and hydrants' need to be i nstal l ed i n thi s area. Adequate :
- water storage shall be provided.
. E_~
Z 34-76 Mains and hydrants need to be installed' in thls area.
• e}" ~ \~~f ~ ti r~ ?`i~ Ri .
PS-885-73 P =
: ZS -I7:73 - Mains a,nd hydrant~'need to be installed in~athis area. ~
t ,
ZE- 84-75 - Thi s area is covered by adequate mains and ~hydrants.
~ ZE- 28-76 - This area is covered by adequate mains-and',hydrants.
~ o b ~ •
,
, ~ o y, u f✓ ai
~
Since~rely~~'
A1 Cook
~ Lto of Inspectors
AC : cy o~~ _ ~ P REVENT FIRES SAVE LIVES
SPOKANE COUNTY HEALTH DISTRIdtl
Inter-Office Communication
4~Ta o~S~
Date: March 9, 1976
T0: Spokane County Planning Commission
FROM: Eugene C. Prathera R.S. ~
SUBJECT: Proposed Preliminary Plat - CHESTER ADDITION
l. Reference is to map of subject, scale 1"=200', by Simpson Engineers,
January 4, 1976, and received in this office on Jan uary 6, 1976.
2. Modei Irrigation District No. 18 in a lette r to this office dated
Feb ruary 18, 1976, indicated its willingness to furnish domestic water
se rvice to lots within this proposed piat subject to ce rtain conditions.
We recommend that, before filing a final plat, conditions (a) and (c)
be completed and that condition (b) either be complete d or a statement
received from the Irrlgation Company that all contractual agreements
have been signed to effect completion. We furthe r recommend the
water system provide for fire flows.
3.' The topography and soils in each lot are suitable for use of individual
on-site sewage disposal systems.
4. ti1e unde rstand this proposed plat is to be submitted for final consideration
and developrnent in Phases. Although Phase I may be developed using
indlvidual on-site sewage disposal systems, subsequent phases may be re-
quired to be sewered.
5. Sponsor must indi cate the di sposi ti on of the producing water we17 in
proposed Lot 8 Block 9. If it is to be retained as a producing well, it
shauld be placed under the control of the serving public water utility
and protected by 1 ot boundary set-backs as speci fi ed by the Regi onal
Engineer, Department of Social and Health Services (Spokane).
dr
,
CC, : Cl arence E. Simpson Engineers, Inc.
N. 909 Argonne Road
Spokane, Washington 99206
,
NIAR 91976
°LAN(V1NG COMM1,SSIOfV
~
SCHD-ADM-118
~ - .
y SPOKANE COUNTY HEALTN DISTRICT
Inter-Offi ce Communi cation
Da te : March 9, 1976 _
T0: Spokane County Planning Commisslon
Eugene C. Prather, R.S. c- _
FROM:
SUBJECT: Proposed Prelim9nary Plat - CHESTER ADDYTION
1. Reference 1s to map of subject, scale 1"=200°. by Slmpson Engineers, -
January 4 0 1976. and recet ved 1n thi s office on January 6 e 1916.
2. Plodel I rri gati on 01 stri ct No. 16 9 n a letter to thi s office dated
February 189 19769 indlcated its w91i4ngness to furnlsh domestic arater
se rdi ce to 1 ots wi th i n th i s proposed p1 at s ubject to ce rtain cond9 tions e
a!e recotrsnend thato before filing a final plat, conditions (a) and (c)
be completed and that condition (b) either be completed or a statement
received from the Irrigation Corrpany that all contractual agreements
have been slgned to effect conrpletione We further recommend the
water system provide for fire flowso
3. The topography and soqls 9n each lot are suitable for use of individual
on-site sewage disposai systenu. '
~,~`~~►~~a tle understand thi s proposed pl at i s to be submi ttQd for fi nal cons3 deratl vn
and development in Phases. Although Phase I may be developed using
i ndi vidual on-si te sewage di sposal systems, subsequent pqases may be re_
quired to be sewerede Sponsor must indicate the dgsposit4on of the producfng water trell tn
propoJed Lot 8 Block 9. If it is to be reta~ined as a producing well.it
should be placed under the control of the serving pub1qc water ut'11ty
CC IV: and protected by 1 ot boundary set-backs as specif1ed by the Regional
Engineer. Department of Social and Health Services (Spokane).
dr
cc: Clarence 'Eo Sirrpson Engineers a Inco
N. 909 argonne Road
' Spokane, Washington 99206
w n.. , , n
t CEt•T;~t,A1..~C►t►LIiV S&*4=L' V5'f=1GT ;
,
~
1
LONG-RANGE PLANN'LNG CucXIT1'EE
MINUTES OF MEETING -,Ma►rch 4, 1976
MembeYe Preeent: Dorothy Riegel Dr. Bruce Gehman
Dr. George Schneider Mr. Neil Prescott
I►ir. Chuck Norrfs Dr. Eisentrout
YA~~ D
Sugan Kaun Mr. StockeY .,~&m*'
Joyce Gorder
The Committee divided into two groups end discueaed the future location of
buildings, sitee, and the actual purchaeing of new eites. The folloWi.ng agree-
ment came fYOm Committee conseneue:
a) Elementary buildings to be built a.n priority order.
1. Replace Green'acres Elementary School as eoon ae possible and ~
build it on the 4th,and Long site.
0
, 2. A school should be built on the site in the Ponderoea area at
44th and Woodruff. Note: The above two schoola ehould be
built as soon ae money can be appropriated. 3. A echool to be built in the Tsarly Dawn area.
4. A school will be built on the site at Liberty Lake.
b) Elementary eires in priority order.
1. Move the present 24th end Adams site further South due to the
closenese of the present Adame school.
~ 2. Retain the preeent Greenacres site and enlarge the area ae
praperty becomee avallable to ten acres.
3. Purchaee a site in the Ponderosa area South of 44th.
4. Purchase a site South of Centrel Valley High School.
5. A site ehould be putchased in the I,iberty Leke atea toward Poet
Falls.
e) Buildings and sites for JunioY High School8.
1. The present site in the Ponderose will be needed for the next
Junior High School.
2. The district should look toward purchasing of a Junfor High
School site a.n the Liberty Lake area.
d) High School sitee and buildinge.
1. There was discussion concerning the location of the present site
for a new high school. This will have to be reviewed closer and
hopefully from information received at our next meeting, a more
accurate decision can be reached.
Mr. Fergen, from the Planning Commission, will be prenent to diecues future
growth and actual pin maps of housing in various locaLione.
Our next meeting ie echeduled for March 189 et 8:00 p.m. in the Board Room.
- - - - - - - - - - - -
5111 1
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Freeway
MISSION GREIINAqEtES ET FMEPUAR'i
_
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Boone BROADWAY 'LF.,M~NT:~ ZY BLA.I~ RY
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~.3~p PROG SS EL~IENTARY
SPRACUE _
4th Avenue
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OPPQR TY~~.qp EL~'~iEidTA~Y ADAMS ELEMEP TARY
lOth Avenue ~~Y Id
12th Avenue
rPr, r i
IVERSITY M ALl~q
16th Avenue E ENIENTARY
- ~ 0 1 +~~ITARY
~g► OUTH PI ,
24th Avenue
~
EI~NTA,mY
~ ,h Avenue 2
6
32nd Avenue
90 115 12 131 - I 139 146 150 154 ` 170 178 ..'a M
CHESTER EL TARY
35th Avenue ~
-7 g NOTE : When Roads or Avenues are given r
_ Ci 4 0 as boundary lines, it is to be asawned
E that the center of that road or avenue
P 0 N D E R 0 S A P A I N T E D is to be cansidered the boundary line.
HILLS
However, both sides of Flora, Sprague soutb
to 12th Avenue will attend Progress Elementary
' end both sides oP 28th Avenue from Blake to
Best will attend Adams Elementary School
i
- - - - _ . ,
7 ~
t.L' 0 f~ - I,;Lr10P
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40th Avenue r , C C in
, 90 - 106 115122 131I~S 139 146 150 ~154 170 178 184 187
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When Roade ar Avenuee are given as a boundary line, it is to be asgwnect f-►
ir tu
that Lhe center of that road or avenue is to be considered the botindarv i~041f-
line.
€n
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~
. ~
LAW OFFICES
DELLW4, RUDOLF E! SCHPOF-DER
ROBERT D. DELLWO 1016 OLD PIATIONAL 9ANK ,BUiLDING
KERMiT M. RUDOLF SPOKANE, WASHiNGTON 99201
RICHARD 1_ SCWROEDER (5091 624•4291
DENNIS A DELlWO
TERRY W MARTIN
FeUruary 18, 1976
Snokane County IIealth District
CourtIlouse Annex
Spokane, tti'asliington 99201
Dear Sir:
Tllis will advise that hlodel Irrigation District is willing to
~ furnish domestic water service to lots within the Northeast
o Quarter of Section 33, Townsliip 25 North, Range 44 L.W.M. suUject
~ to the following conditions:
~
4 a) Said lands being properly aizilexed to t;iis district following
anproval o,f tlie annexatioii by tlie }3oundary Revicti~ Board and
k compliaiice wztll all statutory require~;ents for annexation before
the hoard of this district.
~
~ b) Performance liy the owner ancl/or developer of all conciitions
>
~ establislied by t'he district for annexation, inclurling payment of
14 tlie aslnexation equalizino fee which is cstablished and installation
~of such water distribution facilitzes for said 160 acres as is
reQuired.
.
` c) Providing by the ot,►iYer and/or developer, as part of the
1,, <)O requirements of annexation, of a site for afuture well and a site
for a future storage tank.
This letter is intended as an expression by this district of a
source of ivater supp ly sufficient to eiiable the ourner and/or
dEVeloper to proceed with the platting of said rroperty. It is
aiiticipatcd by the district tllat the development of said 160 acres
ivill take place in stages over aperiod of 5 to 10 years. 1lith that
tirne frame in mind, ana' taking into account that rlie specific
conditions for tlie anneaation to tlie district will require the owner
alld/or developer to irake certain payments and/or installations whicli
will adci to tlie clistrict's caPacity, and jvhich will provide for
the c3istribution of water ivithin the 160 acres, it is considererl by
~
.
,Spokane County ftealt}i llistrict '
Page 2 February 1$, 1976
the di1strict that it has sufficient capacity to serve the lands
in question.
1'ours respectfully I
~
MOllEL IRRLrGATIUN llISTRICT N0. 18
,
By ~
s 2~
I'~President s
cc Spokatie Gouilty Nlanning Comriission
Mr. Robert Tomliiison
11. 606 Third
Mr. .Edgar I3u s chke, Rt. 7 Spokane
c:harles Simpson
Eoard of llirectors
, ~
SPOKANE COUPJTY HEALTH DISTRICT
W. 1115 Mallon
C) ~ Spokane, Washington 99201
DATE : _ September 27, 1974
TO F11 e S 13 r`V1/I
~
FROM Dennis Krol 1 .
.
~
SUE3JECT: Chester Addi ti on - Prel i mi nary P1 at
The terrain and soil conditions are acceptable for individual sewage
disposal systems, however, Mr. Bueschke was in`ormed that the number
of lots being platted would justify a recommendation for public sewer
an,d collection system. Mr. Bueschke stated that planning commission
required him to pl at enti re area; but he intends to final i Ze pi ats
i n vari ous ph ases or addi tions .
~ The existing well within the plat is currently used for irrigation
' and a 100' feet no-building zone will be maintained on all property
segments surrounding the we'l l.
• r
Mr. Bueschke stated he would obtain letter from W.W.P. on the
comrni.ttal to provide water to the number af 7ots shown.
dr
scNO-ENv-038
sL/~- _
3 T l~ r,~► ~.^a~~ ~ b t~, ~'t....~'
0 C Y 15 1974
aPOKA!VE CdUNiY
, 4~-ANNlNG ~~MVI1SSl0I1
,
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r~
~
wiNp 3110 RBY ♦ 00 ~ '
> 6 J
1 L
LQ''~.i ~ty rJ ~'cT•,s~ c ""~r -__.t ` ~✓+rI ~ ~ ~~b~rl_tJ S N~ ~~;J
♦
~t~c /0'
THE WASH.INGTON WATER P0WER COMPANY
f
kv~ Nra' EteCtK1v and 7Vatural Cus Serti:ce
P08T OFFICE 80X 1445 SPOKANE WASNINGTON 99210
P R 9AKE9
MANAGEI3
SPOKANE OIVISION
October 179 1974
Spokane County Plann3ng Commission
Spokane County Courthouse
West 1116 Broadway
Spokane, wA 99201
Attention • Mr. James Stravens
Gentlemen:
We have been asked to serve water for domestic and fire
protection purposes by Ed Iiueschke for his plat develop-
ment located in the Northeast quarter (NE-14-) of Section 33,
Township 25 N, Range 44 EWM, known formerly as the l~awk~.ns
property,.
We are refusing this request and tiave so advised the plat
sponsor for the following reaeon: Our present water
resources are only suffx.cient to supply the present end
expeeted Futuxe customers in the areas on which we are
already .Filed. Mr. Bueschke's development is out5ide of
these' areas.
Yours sincerely,
B.t.
OCT171974
sPoKANE courvTY
PLANNIi~~ ~(MMdSSION
S E R V I N G T H E 1 N l A N 0 E M P i R f 0 F W A S N 1 N G T 0 N A N 0 1 6 A H 0
"E X H I B I T A"
` P WNARY PLAT APPLICATIOIV _ 4JPM
. '
Total Amount of Land in this SubdivisiTn: l~a-ar,.~ nau 16n Anrgc: mrP-rA l Acre a
Proposed Density of the Piat: 439--, /16o Lots/Gros s Acre
Are a Total Amount of Adjoinfng Land Controlled by this Owner or Sponsor: Acres
and Proposed Use of Controlled Adjoininq Land:
Distance tilVhat is the Driving Distance in 1Vliles to the nearest Fire Station? 3
Shopping Facilities? 2 Municipal Boundary? Paved Street or High-
way? 20 feet
Indicate the Proposed Land Use of the Plat• (X) Singlq Famtly Uwellings
Duplexe s Multi -Family Dwelling,Units 1) Mohille Home s
Land ( ) Other (Describe)
U se De scrf bE any Non-Residential U se s Proposed in the Plat
What is the Present Use of the Property Proposed to be Platted? Farm land
Dc you Plan Lo Flle the Plat in its Entirety as Proposed, or Will it be a Multi -Phase
Levelopment? Mu1ti-phase 5 to 10 years
To What I.evel of Impravement will Streets be Construcied Niinimum) Gravel
Curb & Gravel (X) Curb & Paved
What is the Time Period Expected for Compiete Development of the Plat (i.e., Street
Improvetnents ImpravemenLs Completed, Substantfal Percentage of the Lots Occupied? 5 to 10 vearl
Is Dedication of any Land for Public Use (Parks, Schools, etc.) contemplated?
(X ) No ( ) Yes De scribe;
Indicate the Size of Units Proposed to be Constructed; -1-00b-1200, - Sq. Ft.
Number of Bedrooms: 3
Z,Will Buildings be Buult on the Lots Before They Ane Sold No Yes
CWill any Special Deed Restrictions be Included in the Sa].e of Lots ?O Yes )No
~
u~;f "Ye s Explain:
0:1ndicate the Proposed Method of Sewa Dis osal: (X
ge p ) Septic Tank ( j Lagoan
Treatment Plant ( ) Other (Describe)
Indicate the Proposed `Source of Water Supply: Individual Wells Private
~ommunity System (X ) Public System
~~Indicate Method of Extending Service to the Lots (Dwellings): ( x) Utility Easements
U~tiYities a- Underground (X) Utility Easements - Overhead Utilities in Streets -
~ rJ No Easements
Indfcate the Distance from this Proposal to the 1Vearest Existing Water Main: 1D Ft.
Indicate Sf ze of Ne are st Main: 6 In,
List Utilfty Companies or Districts Expected to Provide SeYvice to this Plat:
Electricity -r-pT, Gas _1W Water riodel Phone.EW
~
OSED PLAT NAME: Chester Addition
.
E
Ackn rsigned, have completed the information requested, and the Preliminary
ow P hprepared by me or under my supervision in accordance with the requirae
ment e o~ e ~ pokane County Planning Commission and the laws of the State of
0996 ~v
(Swrveyo (Signed) ~ ~~~r.-~x-~-J Date
~ .
Seal) (Addre s s) N q09 Arq or r4eY . Phone 92~6- f 3 L 2
the sponsor of this proposed subdivision, am the
owner builder agent ' j option Holder contract holder of cne
property proposed to be lplatt~ ; and have completed the :nformation requested of ine
and do hereby testify that i s co t and_accurate. .
• ,
(Signed f _ 0~4 ELu.~ Date
- (Addre s ) Phone
NOTARY Date 311S1T6
~
,
TliiS PART TO BE COIVIPLETED BY PLANIVING COMIVIISSION STAfF ONLYp
Plat Name : (C Ics T, ~ FL .4i~i~l) _
Plat File Number:,~_/a~DZ-74fxv, Date Submittied:
Planning Location: S 33 T&.5 R tlr/ Number of Lots: Z13
Commission Existing Zone Classification of the Area Proposed to Be Platt d: ,~•r.~ I~~
Inforr,tation Zoning Classification Recommended bY Sta#f: 1
Preliminary Plat Fee: $ • Check By: _
GLARENCF E SIMPSON QICHARO L SIMPSOPI l CHARI,ES F SIMPSON
1214,
LlZ6'QIZCQ e. Simpson &gineem, Jnc.
CIVIL EPIGINEERS AND LAAID SURYEYORS
Regirlered :n Wcu$ingion and Idabo
TELEPHOPIE 926-1322
OFF(CE N 909 ARGONNE BD, SPOKANE, WASH 49206
March 15, 1976
PREL]MINARY PLAT
LEGAL DESCRIPTION
Ch-ESTER ADDITION
The NE 1/4 of Section 33, T. 25 N. , R. 44 E. W. M. except Road
R/W.
.
E
~J
ti
~ 996 7~ <<~ ~ 9967 rX-
MAR 15 1976
I.iVUI~ ~~tr
f:NNlNC')r
4
~
AGENDA, MAY 13 , 19,77 TELE ~tE iV0 4S b-22 74
SPOKANE COUNTY PLANNING G MISSION
Tzme: (PLEASE 1VOTE TIME CHANGE) Fnday, 1VIay 13, 19770 8•30 A.M.
Place Conference Room A. County Court House Annex
(Use Mallon Avenue entrance)
PRELIMINARY SUBDIVISION, EXTENSION OF TIME
4. PE-1002A-76, Midilome lst Addition
ZE- 31A-76, Aqricultural to Sinqle Familv Residential (R-1)
,
a Location• Section 33, Township 25 N, Range 44, E.W.M.
The NE 1/4 o f Section 33
b. Sponsor• Robert Tomlinson
WESt 606 Third Avenue
Spokane, `IV=-shington 99204
c Engineers Clarence E Simpson Engineers, Inc
North 909 Argonne Road
Spokane, Washington 99206 ~i
d. Site Size• 140 acres ~
e. Number of Lots: 3,60
ck**~Jlq
f Land use proposed by sponsor Single family dwelli-ngs ~
g. Existing Zoning: Agncultural, established April 11, 1967
h. Advertised Zone Upgrading: Single Family Resldential (R-1)
i. Water Source. Model Irrigation Company
J. School District. Central Valley School District
k PrelimYnary plat given conditional approval to May 1, 1977
1 Request an extension of time to june 1, 1978
m Environmental Impact: A topzc of dxscussion at this hearing may be whether
or not this proposal will have a significant adverse environmental impoct .
~ • • f Rdtr .t f[ /ONO i i 1 n n. ►
q y- r .y
M1 1• t/ i• A Y T 17 J
}lII7~ - P*' w*.
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Y 3 ~ • M ~,bo ~ i R ~ a n
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SCALE
- - - - l ` ' ' (
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- ~ . - ' - - -
-20-
~ J•y
STATE OF WASHINGTON )
) ss
County of Spokane )
I, KATHB.,EEN M. jUSTICE, on oath depose and say that the attached
is a transcript prepared by me of a portton of the tape of the hearing held
by Spokane County Planntng Commtssion, April 9, 1976. Said transcript is true
and correct In sofar a s I wa s abie to Rnterpret the votces a s recorded.
~>c.!Zecrelary
Kathleen M. Justice, Spokane County Planning Depactment
A,
Subscrlbed and sworn to before me thts /6day of 1978.
,
Notary PublLc in and #or the State of
WashLngton, reslding at Spokane,
Wa sh ington.
My commtsston expires • - .
~ ~ -
Midilome Additfon PE-1002-76
Rawlings: Next item is PE-1002-76, Chester AddltLon a request in the Valley at 32nd
and Bowdish tor Single Famtly Resldential zonfng on a prellminary subdivlslon.
Hamilton: Madame Chatrman, I'm not familiar with thts property. I know just vaguely
where it's located. I don't feel I could make a decLsion on 442 homes without
a lLttle more Information as to where its l.ocated and wtthout a comprehensive
plan, wtthout something concrete tn regards to a sewer plan or sewertng of the
Valley, I would prefec we would delay ft and take a field trip on It and I guess
I' m putting that ln the form of a motton.
Rawlings• Tha e Is a motion for delay and a ffeld trlp, do I hear a second.
I-iamilton: Without (Inaudible).
Rawlings: Is there a second. Is there a second,
Schadeqg: Well, I'll second It for the purpose of discussion, not because I agree with
it.
Rawlings: I have an alternative to that, I, he's bringing in a reque st for the flrst 72 lots,
we really have no valid reason for denying those 72 lots that we can verify
through other agenctes or through our own, but I think there ts a larger questlan
here, jerry, that you're talking about and I would llke to see this Commisst on
send a letter to the Commtssloners urging a development on the policy on the
Aquifer that all Departments of the County can have input and llve with and
that there be some kind of long range planntng wLth time frames.
Qutgley• What you're saytng Is that you believe that we should approve this sectton with
septfc tanks but not go any further.
Rawlings: At least keep a handle on anything further, I thlnk you're almost talking about
a sLgntftcant actlon as we were talking about as we (inaudible) o
Hamllton: I'll repeat again this month what I said last month, basically that we keep
adding these large areas on septic lanks not knowing what were dotng to the
Aqulfer and a it was my understanding that from the response to my comment
last month that we would not allow large blocks of land be further developed
but that we woul.d allow small rnterior undeveloped lors wlthin areas that already
are partlally developed until such ttme that they were pretty solid In development,
and then a sewer system would be incocporated in that developed areas.
Rawlings: I don't even thlnk we can say a sewer system at this polnt, J erry, because
I think there's too many unanswered questions that refers to the Aqulfer.
QUIGLEY: We! 1 tf the Health Department
Rawlings• We stlllhave to ha%e a policy, we still have to have some guLdelines and frameworl
to conttnue study on Lt.
Hamtlton: I'm not arguing the potnt, I'm just making the potnt, that nobody seems to be
doing much and I' m ju st trying to bring out again a nd I' 11 brt ng it out aga In
nexfi month If we have a stmilar thing come In agaln another 160 acres next
to this that stands ready to be zoned.
Rawings: Is there a motion on the item
Schadegg: V1Te already have a motton and a secondo
Ha milfon: W e have a mot ion to
Schadegg: We have a mofiion and a second already for dental jerry made the motion and
I seconded it for the purpose of dtscusslon.
T--iamiltora: For denial
,rhadPga; 3ut. dtQtt't you
RawAings. -'%T o, Q" e lay
~
♦ -
r
Pag e 2
Thomas; To delay .
Hamilton: For a field trlp, that was my motion. Now are we talking about the entlre
160 acres or the plat, the ftrst phaste.
Thomas: First Phase.
Hamilton: This rf:quest !s for the ful! 160
Rawling s: That' s rig ht .
Hamilton: Do I have a second to my motion
Schadegg: Yes, I seconded tt
Hamilton: F or delay and a fteld trip was that my motlan
Rawlhgs: Rqady for the questlon
Those ln favor of the motion say aye
Hamrlton: aye
Rawlings: Those opposed, no
Qulgley, Thoma s, Schadegg : No
Rscwlings: Motton lost.
Rawlings: Is there another motlon on the item.
QuEigley: I move we approve the first 72 lots of the subdivlsion, subject to the Staff's
recommendattons .
Schadegg: Second.
Rawlings: There's a motion for approval of the first 72 lots subject to
Hamilton: Phase I
Quigley: Phase I
Rawlings: and a second
Emacio: Questton, what does that mean practicallyspeaking that they come ln, that the
whole plat's approved and then they come tn with each step or what. ,
Deysenroth: Well, what It would mean Es that the preliminary plat consists only of 72 lots
any further development on the 160 acres would have to be rasubmltted just as
it was this montho But any redevelopment Ideally the Staff would have to
analyze In accordance wlth the plan that has been submLtted at this time.
Rawlings: I think the Staff was correct In Insisting that he come tn with a plot for the
total area instead of piecemealing approach .
Emacto; If this sponsor, if we do what we do, then this sponsor sells the parcel
of property then the new sponsor au mes In and he wants to plat a parcel of
property , parCel of property different from thls property there would be road
problem s and allignment
Deysenroth: That's a possiblity and he would have to demonstrate that that desfgn and all the
cons [deratlons th ereto are ju st a s good a s th is
Schadegg: As for the destgn I see no problem with thts, this Isn't somethtng new It's some-
thing we have been doing for the past 20 years.When a subdivision oomes in
and we ask the guy, you own ano ther 200 acres now lets see what you plan to
do wtth it and how lts goizg to fit This Isn't anything new at atl. '
Rawlings: To be absolutely honest I' m more interested in the policy than I am the plot.
I thtnk we are cutting off our nose and operating [n a vacuum splnning our
wheels/ If we aren't a department of this county to force a poltcy who should.
Quigley• We should.
Thomas: Madam Chatrman:If we approve the plat hw only has the authority to develop
Phase I ls that nght:
Right and as each phase !s developed he has to resubmtt that partlcular phase
untu he completes all seven phases, but the overall design will be applicable
throughout alI phases If we aoprove the plat with the 160 acres.
Scfradegq: Thaa wasn't the gnotion
T?e :~ot-Lon Is t0 Zpo,:OsT2 _ne 72 lots but the appllcatfon is to approve the 160
ar_rpc ~ e ~~af .-nrronL
.
.
.
Pag e 3 -
Deysenroth: That's right. It's just that tt you approve lhe whole 160 acres, the wllole 160
acres is an actlve prelirninary plat that has an approved plan. This way you
have an approved preliminary plat with a plan you've given yourgood graces to
next to it although tts not an active preliminary plan that Is approved. It is one
that would have to be revlewed by the Staff as well as the commisston in the
future and this is for you, Jlm
Schadegg: I have a quitstton for tnformatton. At the Qresent timeh tf I understood what the
man said correctly he doesn't have, or does he have, I don't remember you might
say the necessary authortty to submlt the whol.e plat, or does he have control
of it. If I gathered from what he said he didn't have that kind of controJ.a He hac
kind of an agreement. But if thfs thingwent, to buy and he was bnly lnterested
in developing the ftrst 72 acres and it wasn't really clear to me whether he could
saly he could even submit the whole plat but we have a development pl.an proposed and we
inaudlble for approvtng 72 acres, 72 lots by this partlcular actlon.
Q ufgley It appeared to me he's submlttlngaplan for property he doesn't own or even have
an optfon on.
Emacio: We=11, I thfink that Dwtght can answer that qu estion
Hume: Well, the only thing I can add to that was in the preltminary conversatton
wtth hlm he was enter#ng Into an agreement a bindtng agreement to purchase
a subdlvLsional breakdown of Lt, that is the west haLw of the west half some 80
acres that would have imposed unusual restricttons in the overall design of
the 160. We dldn't want to work with a rectangle so we encouraged him to
hold off on that untLl he got his diviston boundaries ftgured out and then purchase
accrodingly that diviston. Thafi's why he was impressing to you that he had thls
flextb lllty.
Qutgley: Wel;l, I think what you have done Is carrect Uut I don't think wlthout the people
that actually own the propecty applying far a platting that we have much of a
Hume: I thtnk that you have their sfgnature on the applicaton
/Deysenrotih: I' m not sure about that, but th e person who owns or cont rols the property
was sltting rlght next to him thls morning we've delt wlth, Mr. Bushki for some
three years and if Mr Tomlinson has told us that he does have a that is he does
have a he never dfd show us documentatlon that he had YV the potenttal abllity
of qalning the rest of the 160 acres and that Mr. Dushki Ls not opposed to
submttting the whole thing at thts timeo
Hamilton: But, keep in mind Stu,f)fXj(he did say he that there might be another developer
come in and develop the other phases I think that's the thing we should try
to protect ourselves agatnst because I don't know what kind of a developer he !s
I assume you know. We don't have grea t consistency in our developers in this
a rea q
Hume: Your motion supports that format in that you're only approving everything else
as long as you have stated that you agree in general the overall design and that
we should follow that as a format for subsequent applicatlons, in any sub-
divis ion review.
Hamilton: Do you think the motian does that:
Hume: I don't know well you've exprgs sed that intent.
RAwlfng s: That I s our lntent, Dwight.
Schadegg: I fihlnk the intent in our conversatton will support It, I'd like to move for the
questlon. rephra se
Hamllton: Why don't you change your motton to incorporate that.
1Racvlings: Ready for the questRon
_~arni :or-- that that ; s the Intentthat the overall plan is genera! 1 y acceptable
Quigley: We are gnincs to votp on my mo~xon *he way I rnade It
.
.
.
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Pag e 4
Rawlings- Are you ready for the questlon ?
Questlon
Rawlings: A1l ln favor of the motlon say aye
Aye o
Rawing s: opposed no Motion carries.
$chadegg: Please let the record show that, Madame Chaicman,
Rawlings: yes
Schadegg: Could we let the record show that the overall design that was presented has our
general approval ~
Deysenrotli: And that you were approv ingthe flrst Phase, Ls that correct.
Schadegg: We approved the firs t phase, yese
Deysenroth: Could I interupt for just one second
Rawlings: yes
~
p
'
`
MINUTES
w
MAY 13, 19 77
,
PRELIMINARY SUBDIfJISIOIJ t EXTENSIUi`T OF TIN:E '
,
PE-1 002A-7b - IvlIDILOME !ST ADDITION: T0MLINSGIV
~
ZE- 31A- 70^ - AGRIC U LTU RAL TO SI A1GLE FAWi`I LY RESIDENTIAL (R-1)
,
Plannfng CommissiQn RecorqmEndation: Approve 3n extensfon of time to Tune r 1978.
(Vote was unanimous. ) , f 1 ' 6
,
A. FI NDINGS ,
.
1. The preliminary prat was giver, conditional approval by thE Board of .
County Commissioners to May,, 1'09 77 aiDd it-app'ear`s ffithat reasonable
roval,
progress has bEen rnade towards' mqetirig the c4nclitionsof app
, 4<
specifically; < ~ - ,
r,
a. Phase I of the preliminary piat that was given conditionll approval
by the Board of County Cflmmissioners was r"ECOrded several weeks
ago es 3 final plat.
b. The applicant is presently attemnting ta file Phase II of the original
approved preliminary plat, althoagh it may be several months
before the plat will bs recorded.
2. The applicant has notffiEd the Plann.ing Department staff that he is desir-
ous of receiving an extension 4f time to June 1, 1578, so that he may
comply with all conditions of approval and fiie Phase II.
8. C EiV ERAL bATA:
1. Location: Section .23, Township 25 N., Range 44,
E.W.M. The NE 114 of Sect. 33
2. Sponsor: Robe: t Torrrlinson
W. 60 a Third Avenue
Spokane, WA 99204
11. Engineer.4: Clarence E. S impson tngineers, Inc.
N. 9019 Argonne Road
Spokane, WA 992u'6
4, Stte Size: 1~1 'j acres
5. Number of Lots: 3 6C
6. Land usE proposec; by sponsor: Single famiiy dwellings
7. Exfsting Zaning: Agricultural, estabiished April 11, 1967
8. Advertised Zone Upgradfng: Single F3mily Residential (R-1)
S. Water SourcE: Mode1 Irrigati4n Company
1~. School ristrfct: Ccntral VaI1Ey School District
11. PrEliminary plat given conaitional approv:l to May 1, 1577
12. RequQSt an Extension of time ta juns 1, 1978
1? . ginviYohmehtal Impact: A tvpic of disCussion at this hearing may be
~A~~i9f~igi or not this proposal will have a signifioattt adnerse Environmental
impact.
_37 -
~
. 5POIKME VALLtQ FIM DtPARTPICNT
ep&4 xww4w,aw vo/ I
EAST 10019 SPRAGUE AVE. o SPOKANE, WASNINGTON 99206 o TELEPNONf (309) 928-17W
; LU tR //004V
~
May 4, 1977
Mr,: Fred L. Dayharsh, Planning Director
Spokane County Planning Commission
~ North 811 Jefferson
Spokane, WA 99201
Dear Mr. Dayharsh:
The following zone changes and preliminary subdivisions have been reviewed
• for adequate fi re protection:
r PE-1086-77 ~
- ZE- 46-77 - Mains and hydrants/ need to be installed in this area.
PE-1104-77 a ~
~ ZE- 82-77 - Mains and hydra ts need to be installed in this area.
PE-1105-77
ZE- 83-77 - Mains and hydrant need' to be installed `iri this area.
~
r F ~ ~
I~ ~
O
~ P~
PE-110/-77 r s~ ~
ZE- 85-77 - Mains and hydrants need to be'installed'in his area.
/ / ~..a., , - t , n
~
PE-1037-76 f
. ZE- 96-76 - Mains~ and Qydrants need to be installed iin t is a ea.
~
PE-1050-76
: ZE- 129-76 - ~!ain`s _ay~n~hyd`rants need to be instailed in thi ~ar a\~.\
. ~ _
. ~ : r< < o- ~
PS-885-73 S- 17-73 ~ Mains and ~hydrants need to be instalf Tecid-fn this area.
PE-1002A-76
ZE- 31A-76 - Mains and hydrants need to be 9nstalled`in;this are~
a
Sinc el,
~ .
E C E I V E
A1 Cook, Lt. of Inspectors
Fire Prevention Bureau NIAY 6 1977
- mk SPOKANE COUN?Y _
PLANNING DEPARTMENT
PRE VEl vT FIRES SAVE LI ~~ES . _ . . . . . .
I
V/ V 0~ ~
O~
~
i
WEST 606 THIRD AVENUE
~TOY' YLQ U9 SON AGEU~ICit 09 KA624-9133H I N N 99204
PO, April 27, 1977
Mr. 6ob Bethards
Spokane Planning Commission
N. 811 Jefferson
Spokane, Washington
Dear Sir.
This letter is to request an extension of your preliminary
approval of our Midilome Addition (formerly Chester Addition).
Please place this request on the next available agenda.
Your attention to this matter is greatly appreciated.
Sincerely,
AY
Robert H. Tomlinson
RHT:mb
APR 2?)977
SPOKANE COUNTY
PlANNING DEPARtMENT
Office Locations SPOKANE - SPOKANE VALLEY - CLARKSTON LEWISTON,,IDAHO
~
110. 3639
sEcaRr TEM, aoEtRD or, couNTY coMMzsSzarrERs ar, spoUNE coUNTY, wasmi Grort.
P:- lUU2w75
)
_ 11 T, iZE ~'~t1T'i'I"OR OF mE FTLlAVC Or TiiE ~
s'iN~'j. PLP.T VT' MUDIZOiVdE ADDITTON R E S O L U T I O N
f.C G~ .3': DaN SEG`TIC}N 33, Z'JV%rNSHIP 2 50e,
, TudW.11ti.,v SFGKANE CCU1jlr 1
.~y~~~.;i 4A
' 1i~~~INGTOI+T.
)
~
BE IT RIT~SOLVED 33Y T'ciE BOARD OF COUNTY COM42SSIONMS OF SPOKANE COUNTY, WASHINGTON,
that tlic final plat of
NMMIL4WI.E ~lDDYTIGrV
Propercy locaLod in the'J1Test 1/2 or tl1e NE 1/4 of Sectfon 33, Township 25 1Vo,
Azi:~~a 44, Spolcane County, Washington,
marc pxeciscly described in the plat dedication, on the recommendation of the Spokane
County Plannx.ng Commission, be, and the same hereby is approved, Lllth tY1E: exception
that tn.e pub].ic rights of way dedlcatied in tnis plat will not be established for
ma.in1,enance puxposES until thc County Engineer has ccrtiiied that the roads have
been iiriprovccl to County standards and approved by a separate,resolution of the Board
of County Commiss2oncrs.
PA.SSED BY THE $OARD THIS ~ DAY OF 19
.
BOARD OF COUNTY COMMISSIONERS
OF SPOKAYE COUNTY, WASHINGTON.
1ERRY C. K4PEY, CNM.
I.ARNED
RAY W. NRISTENSEN
ATTE,ST.
VIEWQN W HLAND
Cler the Ho
BY
Dcputy
~ ~
~
~~~J t~~''~ ~~1"~~~1' t"t~?~I~f~:C~~ ~~1~~' C~1"1 ~~~t,
~ ~ , ~1 ~ ~ O U ~~:~a ~►.x,
~f ~a~i~d ~~ay in ~C~r~f ~r~~ ~e '~~~m Id~, lV~a 11 ~n Av~~n ~ue Er~~-
tr~ar~ce, ~~~I~ar~~ C~unty ~c~~rt Hv~rse Ar~r~ex~ ~pc~~Can~,
l~a~l~ingtor~, ~~e ~P~KA~IE ~C~3~lNTY i~LAh1~IN~ C~1V~1Vl~S-
~I~~ ~vi~l ~vn~d~~ct ~ public l~e~rir~~ t~
~~~~~;~t~;, ~ ~v~c~s~, s~, ~~l~G~~ ~ ~3~ ~►T ~ 8~ ~I ~
~ ~1►[~"~~i~ A~i ''~U ~I~C ~ '~i~ ~i~ N~ ~t ~ ~ ~L~
il~~~ ~ '1'~ ~ ~ ~~t ~ ~ ~Al~ '~Ci ~ ~ ~LI ~ -
~~~~'~~'~i1L~t~'r~~~~~~~'~ '~~~'~~~i
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~►~r~~r~l +d~s~~i~ti~n ~r~ ar~~a~
r~`~.`~~~1 f~'4'~I~~ ~ ifi~,'~, t.~'~~r
P~r~ ~ ]I~rdi~h~ a~ ~ ~ ~ ~
~C~~ FURTHE~ D~T~►IL~S c~nta~t the ~p~~C~n+e C+~~nty
Pl~n~in~ ~c~mmi~si~n, ~ub►~i~'~~r~k~ Buil~ing, N. ~1~ J~~~~r-
~~n ~t~+~et, ~p~►k~an~, ~Ilas~l~ir~g~~n.
~ ~ ~
Diractor oi ~lanning
~pol~a~~ Couet~► Flanning ~~mmission Fa~M e~a ~6ua. c~~r~. a-6a
~
LQT AREA STATISTICS FORi MIDILCPz- ADDITION C3I2ql77
,
A
BLOCK 1 AREA = 265925. SO FT ( 6.10 ACRES)
AC~UV AREA = ?65924. SU FT R 6.10 ACRES~)
DIFFfREhdCE - 1. SQ FT
BLOCK 2 "1R E A = 376404.. SO F'f ( B.64 AC~~~ )
ACCUM 44EA z 3-?b4D3.~ i~T ( 9.b~ qro~51
DiFFFRENCE = t. S C FT
BLOCK 3 AR E A = 48513. SO FT ( 1.11 ACRES)
ACCUM AkEA = 43513. S4 FT ( 1.11 ACRES)
DTFF ERcNC: = 0. SQ FT
r-
t~ ~ BLOCK 4 AR;E4 = 53577. SO PT 4 1*23 ACRES)
M! 4 CV ~ ~E4 = 5351 f . SV 1 P 1 1.23 ACRES)
~ QIFFE~~-NCE m G . S Q F T
c 8 L0CK 5 AR EA = 4{}3?3 . SG F T ( 0 . ~ ACRE'S )
ACCIJM "REC"► = 4C321. S6 F T ( 0At R
f ~ DYFFERENCE = 0, SO F T
~
<<
; $LOCK ~ AREA = 113713. S C~F T 1 2.61 ACRES1
yr
4CGU'M = 113711. 5O FT [ 2f61 ACR;S)
4IFFERENCE = 0. SO FT
r iBLOCK 17 dREA = 22953, 5O F T ( 0.53 t~~P "C'S
Ak. C V P AR E1i ~ 22958. -1 V F 1 { 0# 53 A'trR# E.1 )
1.f 1FFE1SENLE 0• JO F1
r~
BLOCK _ 3 .QG REA _ 1 152~. SI) F T ~ C 2 f,3 A C P E S }
A'~~UM AREJ~, = 11~29,. SU P T 0.26 ACREa I
~ C IFFEqE'VCE * 0. SO FT
GRas~ ~ENsI-rrr. 3 LOTS/c;~~~
~ NET DENSI TY= 3 L I] T 51 ACRE
LARGEST LCT: 20293. 5O FT
SMALIEST L C'T= 11345. SO FT
dVERAGE t pT: 12q53. SO F~
S OF LOTS: 72
r
~
~
~
~
~
i
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~ ~ CEIPT Dt~tz)' ~'Z 1720
Recei ved F~om
~
Add~,r,ess
❑o Ila rS $
For
~
ACCCkUhJT HO'4M PA1#]
Amnt. OF +Cwsr~ CC?L`I"i7'~ P~~ DEP~'+R~I1~'
XCCU~rr~'E
AMT. PAFQ CHECK
l
MtANCE MQNE Y RVE t3FlCER ~ r
iKMb
TO
I)~te ~`ame
WHt~~ ~~U WF-Rf OUT
m ~
of
.
r
Pivone U1n64[ ~~4~YC►140H
Aree 1~
TELEP~ONED PLM% CMI
UJUD TO SEE YOU EM AGMM
wAM TO SEE Y4U U~GU?
RUURNED YOUit CALL
SsF }
~
11114-
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✓ ~
"
Opprbtor
1f~'~ ~~f
~ ~ ~
SPOKANE COUNTY P~- J UC~~ (p _
PLANfVtNG COMMISSION
N 811 .1EFFER30N
SPOKANB. WASHINGTON 99201 ~6
ck,C4~
PeSh
S99206 -
' S
IRETUP, f~DDF,LSSEE 97G-
tiTO SEP~DER 1 ~ ' • > / 0
~1
SPOKANE COUNTY
PLANNING DEPARTMENdT y .~~17~A°~~~~.~
ty * ~,e V A~~~
N 811 JEFt- RSON
SPOKANB, WASHIN670N 99201
Od 11
~
Will m J. Davis
N.~ 2 Aususta
S oa ken, WA 99205
`iG [3 Lr E
~N ~
P
FORvrARa rl w
j ~
SPOKANE COUNTY
PLANNING DEPARTMENT xcl~~~ `~~•c°~,,:.~~ ^
N g1 1 JERFERSON ~
+ A1I&24 77
8POKANE, WASHINGTON 99201 b
~~y~} " 1
~'lJ ,a7Q L _ ~.a.
Ronald A. Moll
Ea st-M2-Frederi c k
Spokane, UJA 99206
t~'ElkwDt N`JMBLs E l~
,
6
Ur~r~'B~_ CO EpRWARD a P~ ~O
'F'EEL TO SEP~DER ~s~- 1977 ti4O
~
SPOK/4NE COUNTY
PLANNING DEPARTMENT
N 811 JEFFeRSON ~ ~ N~ ~
~l~ro2~~77 p~'~ J3 ~ ~ (y
SPOKANE. WASHIN6TON 99201
p ~
/
~~K"~~~~
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Car1 V. Stone
E. 12011-3nd
Spokane, WA 9906
f ~v
f ~ -%UCE~ ~ ~t4E'
x U p~16 31
B E I~ a p r~ ~
'd TO SENDER 1977
- - - - - - - - - - ~ - ' - - - _ - - -~,-SPOKANE COUiV'T'Y I 00 c->- ^ 7~
PLANNING COMMISSION
N 911 JEFFERSON
~
SPOKANE, WA8H[N6TON 99201
Y'u
Raymond Bogga
East 11711 - 3rd
• Spoka.ne, WA 99206 .
~
► C H ` , ~ tA E
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BE1~ 1 O Vlr ~ER ~ o) I.77v
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col. 1 ie e quote mark(bmoria
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L. 41/df?F - colae 5- 13 ie numeric aith blenke acmptabloo ~
Do not zero fill-4
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col. U is e quote mark Cnumerio "10o
0 9_ L„_,_ Note s PUnch the 999999999 aar+d as the Vl'arY
last ca r d of ejo b9 i e e e, d o aot
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~ i , ~l..l..~ ParceI numbers 325,41..0800 thocu 32541-089~
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NKiNG DEPTG
SPOKAZiE F-A ~TY PLA
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~ nviron 1'Y1 ental
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ImPact tate r'Y'1 ent
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MrDrLoME
SUBDIVISIOf'V '
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Lead Agency : County of 3pokane
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Auc,3ust 1978
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DRAFT
ENVIRONMENTAL IMPACT STATEMENT
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MIDILOME SUBDIVISION
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Prepared for
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Midilome, Inc.
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Lead Agency: County of Spokane
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Q August 1978
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~ HAWORTH AND ANDERSON, INC.
West 621 Ma11on Avenue
Spokane, Washington
99201 ~
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~ INTRODUCTION
The proposed action under review is a request for a zone change from
Agricultural to Single Family Residential for approximately 160 acres of
land and subsequent development of that property as a suburban residential
development. A preliminary plat,of the property has also been submitted
for approval. The proposed action also includes the issuance of all neces-
~ sary local, state and Federal regulatory permits and approvals.
The proposed action was initiated by Midilome, Inc., a 4lashington corpora-
tion, who are the owners and developers of the property. This project was
first initiated in March of 1976 when a preliminary plat was submitted and
zone change requested for the first phase of the project called.Midilome Addi-
~ tion, which consisted of about 25 acres and 72 residential units The Board
of County Commissioners of Spokane County gave final approval to the plat of
Midilome Addition on April 7, 1977. The approval of the plat specified that
individual on-site septic tanks would be used for waste water disposal. Sub-
sequent to this approval the project development proposed the use of a central
activated sludge extended aeration sewage treatment system in lieu of indlvi-
~ dual on-site septic tanks. The proposed package sewage treatment facility and
distributi,on system was approved by the Spokane County Engineer on May 18, 19779
and by the Spokane County Health District on July 5, 1977. Subsequent to
these approvals the developer commenced construction of the sewage treatment
system. Acting upon a citizen petition, the Spokane County Board of County
Commissioners held a hearing upon the revised sewage treatment proposal on
~ September 8, 1977, and on September 15, 1977 issued a written approval of the
change in plat conditions. On September 29, 1977 the developer entered into
a written maintenance and operation agreement with Spokane County for the
sewage treatment system. The above actions and the subsequent approval of the
sewage treatment system by the Washington State Departments of Ecology and
Social and Health Services are presently the subject of litigation. At the
~ present time building permits have been issued for all 72 lots approved in
Midilome Addition. Of the residential units comp]eted or now under construc-
tion 51 units are connected to the package sewage treatment plant and 21 units
utilize on-site septic tanks.
The following environmental analysis is intended to assess the impact of
~ the entire Midilome Subdivision project including the 72 units that have pre-
viously been approved.
The lead agency for this proposa] is the County of Spokane. The respon-
sible official is the Board of County Commissioners, who have assigned respon-
sibility for the environmental review process to Mr. Fred Dayharsh, Director,
~ Spokane County Planning Department.
The proposed action may require the following legal actions and permits:
1. Draft and Final Environmental Impact Statements;
2. Zone Change from Agricultural to Single Family Residential,
3. Approval of Preliminary and Final Plats for the project;
~ 4. Approvals or permits from the Spokane County Health District,
Washington State Department of Social and Health Services, and
the Washington State Depa rtment of Ecology for design and operation
of a sewage disposal system,
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5. So1e Source Aquifer review and approval by the federal Environ-
mental Protection,Agency;
~ 6 Project reyiew and approval by the federal Department of Housing
and Urban Developrnent, and
7. The obtaining of all required building permits.
The draft environmental impact statement was prepared by Haworth and
Anderson, inc., West 621 Mallon, Spokane, WA 99201. Data required to pro-
~ duce this document may be obtained at the above address.
Copies of this document may be obtained from the Spokane County Planning
Oepartment for the cost of reproduction and mailing.
This Draft Environmental Impact Statement was issued on August 4, 1978
In order to be incorporated into the Final -Environmental Impact Statement,
~ public comments and remarks by consulted agencies or individuals must be
received by the Spokane County Planning Department, North 811 Jefferson,
Spokane, WA 99201, on or before Septem6er 8, 1978,.
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TABLE OF CONTENTS
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INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . , i
DISTRIBUTION LIST . . . . . . . . . . . . . . . . . . . . . . . . , vi
~ SUMMARY OF THE CONTENTS OF THE ORAFT EIS . . . . . . . . . . . . . . . 1
IMPACT SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Description of the Proposed Action . . . . . . . . . . . . 9
Exi sti ng Condi tions . . . . . . . . . . . . . . . . . . . . . 13
~ The Probable Impact of the Proposed Action . . . . . . . . . . . 18
The Relationship Between Local Short Term Uses of Man's
Environment and Maintenance and Enhancement of Long
Term Producti vi ty . . . . . . . . . . . . . . . . . . . . . . . 23
Irreversible and/or Irretrievable Commitments of Resources 24
Measures to Mitigate Adverse Impacts . . . . . . . . . . . . . 25
~ Alternatives to the Proposed Project . . . . . . . . . . . . . . 29
Unavoidable Adverse Impacts . . . . . . . . . . . . . . . . . . . 36
APPENDIX A: CATEGORICAL IMPACT ANAYSIS . . . . . . . . . . . . . . . 39
List of Elements of the Environment . . . . . . . . . . . . . . . . . 39
~ Elenents of the Physical Environment. . . . . . . . . . . . . . . . . 41
l. Earth. . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
2. Air 47
3. Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
4. Flora . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
~ 5. Fauna . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
6. Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
7. Light and Gl are . . . . . . . . . . . . . . . . . . . . . . .107
8. Land Use . . . . . . . . . . . . . . . . . . . . . . . . . . 1 08
9. Natural Resources. . . . . . . . . . . . . . . . . . . . . 109
10. Risk of Explosion or Hazardous Em;ssions . . . . . . . . . . 110
~ Elements of the Human Environment . . . . . . . . . . . . . . . . . .111
1. Popul ati on . . . . . . . . . . . . . . . . . . . . . . . . . 111
2. Housing. e . . . . . . . . . . . . . . . . . . . . . . . . 112
3. Economi cs . . . . . . . . . . . . . . . . . . . . . . . . . 112
4. Transportation/CirculatTOn . . . . . . . . . . . . . . . . . 113
5. Publ'ic Services. . . . . . . . . . . . . . . . . . . . . . . 117
~ 6. Energy . . . . . . . . . . . . . . . . . . . . . . . . . . . 1] 22
7. Utilities. . . . . . . . . . . . . . . . . . . . . . . . . .124
8. Human Heal th . o . . . . . . . . . . . . . . . . . . . . . . 125
9. Aesthetics . . . . . . . . . . . . . . . . . . . . . . . . . 125
10. Recreati on . . . . . . . . . . . . . . . . . . . . . . . . . 125
11. Archaeological/Historical. . . . . o . . . . . . . . . . . . 125
~ 12. Additional Population Characteristics. . . . . . . . . . . . 125
Ci tati ons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
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APPENDIX B . . . . . . . . . . . . . . . . . . . . . . . 128
Section 1: Chemical Quality of Ground Water from Wells ~n the
~ Vicinity of the Project Site . . . . . . . . . . . . . . 128
Section 2: Ground Water Quality Data from Various Aquifer
,Cross Sections . . . . . . . . . . . . . . . . . . . 142
Sectlon 3: Water Quality Data from Depth-Selective Ground
Water Sites . . . . . . . . . . . . . . . . . . . . . 149
~ APPENDIX C WASTE WATER TREATMENT OPTIONS . . . . . . . . . . . . . 156
Citations . . . . . . . . . . . . . . . . . . . . . . . . . .172
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LIST OF MAPS AND TABLES
Vicinity Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
~ Site Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Pl at Design. . . . 6u;1;t; . . . . . . . . . . . . . . . . . . . . . . 12
Estimated Effluent from A1 ternatTVe Waste Water Treatment
Processes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Operational Characteristic of Vari~ous Treatment Processes. 32
Estimated Total Annual and Unit Costs for Alternative Treatment
~ Processes wi th a Design F1 ow of 1.0 MGD . . . . o . . . . . . . . . 33
So i 1 s Ma p . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Topography Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Maximum Monitored Levels of Pollutants . . . . . . . . . . . . . . . . 48
Suspended Particulate Surrmary. . . . . . . . . . . . . . . . . . . . . . 49
1976 Carbon Monoxi de Level s . . . . . . . . . . . . . . . . . . . . . . 51
~ Non-attai nment Area Map . . . . . . . . . . . . . . . . . . . . 52
CO Moni tori ng Stati on Si tes . . . . . . . . . . . . . . . . . . . . . 53
CO Concentrati ons . . . . . . . . . . . . . . . . . . . . . . . . 55
Aquifer Recharge Area . . . . . . . . . . . . . . . . . . . . . . 59
Thickness and Seismic Profile of the Spokane-Rathdrum Prairie 61
Aquifer Transmissivity Distribution . . . . . . . . . . . . . . . 63
~ Water Level Fluctuations in We11 25/44-23D1 . . . . . . . . . . . . . 65
Aquifer Discharge/Recharge Rates . . . . . . . . . . . . . . . . . . . 67
Estimated Average Rates of Recharge to and Discharge from the Aquifer. 68
Monthly Water 6alance Data for Spokane Valley Under Generalized
Suburban Condi ti ons . . . . . . . . . . . . . . . . . . . . . . . . 71
Summary of Public Water-Supply Systems Obta~ninq Water from the
~ Aquifer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Water Qual ity Standards . . . . . . . . . . . . . . . . . . . . . . . 76
Summary of Ground-Water-Quality Data . . . . . . . . . . . . . . . . . 78
Records of,Locations Where Constituents in Ground-Water Samples
Have Exceeded Chemi cal Standards . . . . . . . . . . . . . . . . . 79
Ground Water Quality Standards Violation Sites . . . . . . . . . . . . gp
Historical Nitrate Levels From Selected Wells Near Project Site . . 82
~ Variation in Ground Water Quality at Various Aquifer Cross Sections. . 83
Variation in Ground Water Quality at Various Aquifer Cross
Sections Map . . . . . . . . . . . . . J . . . . . . . . . . . 84
"208" Field Data Average Total Nitratemg. . . . . . . . . . . . . 85
"208" Field Data Average Total Nitrate, mg/1 . . . . . . . . . . . . . 87
DSHS Data Average Total Nitrate, mg/1 . . . . . . . . . . . . . . . . gg
~ Location of Depth Selective Groundwater Test S7tes . . . . . . . . . gg
Water Quality from Depth Selective Ground Water Sites 90
Summary of Annual Water Balance and Percolation Quality Values for
Spokane Valley Suburban Conditions . . . . . . . . . . . . . . . . 93
Well Locations Downstream from Project Site . . . . . . . . . . . . . 95
Distribution of Wastewater Treatment Facilities . . . . . . . . . . . 98
~ Esti mated Effl uent Qual i ty . . . . . . . . . . . . . . . . . ] 00
Noi se Limi tati ons . . . . . . . . . . . . . . . . . . . . . . . . . 106
Motor Vehicle Noise Performance Standards . . . . . . . . . . . . 106
Exi sti n g Noi se Leve1 s . . . . . . . . . . . . . . . . . . . . . 107 i
Annual Average Daily Traffic Counts . , . . . . , . , , , . . . 114
Proposed Roadway System . . . . . . . . . . . . . . . . . . . 116
~ Location of Public Service Facilities . . . . . . . . . . . . . . . 118
School Enrollment Expected from Midilome . . . . . . . . . . . , 120
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DiSTRiBUTiON LiST
U.S. Environmental ProtectTOn Agency, Seattle
~ U.S. Soil Conservation Service, Spokane
U.S. Soi1 Conservation Service, ConservatTOn District, Spokane
State Department of Commerce and EconomTC Development
State Department of Ecology, Eastern Regional Office, Spokane
State Department of Ecology, OlympYa (2) (1 to the SEPA Register)
State Ecological Commission
~ State Department of Fisheries
State Department of Game, Olympia and Spokane
State Department of Transportation, Olympia
, State Department of Transportation, Spokane
State Office of Fi scal Managenent
State Department of Soaial and Health Services, Olympia
0 State Department of Social and Health Services, Spokane
State Utilities and Transpertat7on Commrssion, Olympia
State Office of Archaeol ogy and Hi storTC Preservati on
Spokane County Air Pollution Control AuthorTty
Spokane County Board of Commissioners (3)
Spokane County Building Depa rtment
~ Spokane County Engineer's Office (4)
Spokane County Li brary Dt stri ct (3 )
Spokane County Pa rk Department
'Spokane County Planning Commissron (7)
Spokane County Planning Oepartment (20)
Spokane County Prosecuting Attorney, Civil DivYSion (2)
~ Spokane Regional Planning Conference (2)
Spokane County Health District, Environmental Health Division (3)
Spokane Fire District No. 1
Pacific Northwest Bell Telephone Company
tiJashington lJater Power Company
tiiashington State Energy Office, Olympia
~ Washington State Departanent of Natural Resources, Colville
Washington State Depart.ment of Natural Resources, Olympia
Spokane Comuni ty Press
Spokesman-Review
Spokane Daily Chronicle
Spokane City Library (2)
~ Val ] ey Eieral d
Eastern lJashington Health Systems Agency
Central Valley School District
Chester Elementary School, Principal
Model Irrigation District
Bob Tomlinson (5)
~ ~Willard Sharp
Joan Honican
William Powell, Attorney
Va11ey Garbage Services ~
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SUMMARY OF THE CONTENTS OF THE DRAFT EIS
~ PROPQSED ACTION
The proposed action is for approval o`f a zone change and preliminary
plat and a waste water dTSposal systen for the develop~nent of the Midilome
residential subdivi,sTOn. The proposed project provfdes for the developnent
of approximately 425 homes on 164 acres of marginal agricultural land in an
~ area south of Opportunity bounded By PTnes, 40tFi Avenue, 6owdish, and 32nd
Avenue. The project sponsor Ts proposing the centralized collection of
sewage and waste water and treatment in a central activated sludge extended
aeration system. The project wrll be developed in phases over a three-year
period.
~ PR06ABLE IMPACTS
Earth
* DisruptiQn, dlsplacement, compaction and overcavering of soil.
* Pave or overbuYld of 30 percent of the project site.
0 * Minor alteration of topographYCal contour of the project site,
* Minor wind and water erosYOn durYng constructlon phase.
Air
* Temporary dus~t and pa rtlculates during construction phase.
0 * Sl i ght fincrease irn emi s stons Prom heati ng and air conditi oni ng
systems and fireplaces.
* Increase in traffYC related emissions.
Water
0 * Disruption and alteratTOn of existinq surface water runoff
charactertstics.
* Construction of impervTOUS su rfaces over 30 percent of the si~te.
* Potenti a1 ground water contami nati on from percol ati on of su rface
water runoff.
* Dlsposal of over six million cuhic feet of treated waste water
annually to drainfTeld located over the aquifer.
Potential ground water contamination from sub-surface disposal
of treated waste water effl uent.
Fl ora
* Removal of 160 acres of marginal farmland from production.
Replacement of existing flora with domestic landscaping.
Fauna
* Decrease in number and diversity of species.
* Removal and disruption of wildlife habitat.
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Noise ,
* Temporary increase i n ambi ent 1 evel s duri ng constructi on.
* Increase in noise after developnent due to increased traffic ~
and,suburban resrdentral actrvTties. ~
Light and Gla=re
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* New sources of 1Tght created.
Land Use 4D
* Compatible with surrounding land uses.
* Replacement of marginal agricultural use with more intensive
resldential use.
* Construction of 425 new homes.
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Natural Resources
* Consumption of building materlal and energy.
* Energy consumpti,on for space heatirng and cooling and transportation.
* Withdrawal of 160 acres of margTnal land fram agricultu ral pro-
duction. ~
Risk of Explosion or Hazardous Emiss,ion
* Temporary risk,during construction phase.
Population ~
* Housing for a total population of approximately 1,300 persons.
Housin4
* Construction of approximately 425 new homes. ~
Transportation/Circulation
* Generation of about 3,400 trips per day.
* Internal roadway system paved and cur6ed.
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Public Services
* Increase in fire and police protection service requirements.
* Increased school district enrollment by 500 students.
* Temporary overcrowding of junior and senior high schools.
* Increased need for additional school district facilities. ~
* Increased utiiization of park and recreational facilities.
* Increased roadway system maintenance costs.
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Energy
* Consume estimated 250,000 therms of natural gas.
Consume estimated 1.5 to 2.0 mi11 i on kwh of -el ectri c i ty.
* Oirect and Tndirect consumPtron of energy for space heating,
air conditionTng, 11ghtTng and transportation.
Utilities
Increase in utYlYty servrce requTrenents.
* Water consumptTOn of 14 mi11TOn cvD1c feet per year.
* Generation of sTx mTllron cu6ic feet per year of waste water.
* Generation of 1,100 tons of so1Td waste per year.
~ Human Health
(Please refer ta the sectTOn on Ground Water Quantity.)
Aesthetics
* No adverse impacts identifTed.
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Recreation
* No adverse impacts identified.
Archaeological/Historical
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* No adverse impacts identTfted.
ALTERNATIVES
No Action
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* Site r,rould remain temporarily in limited agricultural use.
* Allows subsequent development with different or greater en-
vironmental Ympacts.
* Allows su6sequent piecemeal development precluding centralized
waste water collection.
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Alternate Sites
* No applicant ownership or control of alternate sites.
* Pose same or equivalent impacts in tems of traffic, site devel-
opment, utility and service demands, noise, light and glare, and
~ air quality impact.
* Reduced ground water quality impact if site not located over
aquifer. +
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Alternate Development Concepts
* Lower density developnent would mltlgate impact on air quality,
traffic generation, nolse, schools and other public service and ~
utility requirements.
* Lotver densi ty woul d resul tin higher per uni t cost of housing.
* Higher per unit development cost for utilities.
* Central collection and treatment of waste water less feasible
at lower density. •
Alternate Sewage Treatment Alternatrve
Land Application System
* Tertiary treatment method.
* Effl uent wi th 1 ow nutrrient concentration. •
* More effective than sub-surface dTSposal.
* Requ i res 50 to 100 acres of 1 and .
* High development cost.
* Alternate disposai requTred during winter months.
* Public health risk from water overspray.
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Pond and Lagoon Systems
* Effluent quality margTnal with nutrient rgnoval equivalent to
septlc tanks.
* Surface discharge nofi feasible due to marginal effluent quality
and lack of proximity to surface water. ~
* Woul d requ i re non-overfl ow 1 agoon (50 or more acres of 1 and ) or
effluent discharge to drainfield.
* Odor and other operatlonal problems.
On-site Disposal System (Septic Tanks)
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* Function with minimal maintenance.
* Effiuent quality is not improved over activated s7udge system.
* Effluent not centrally collected.
* fVo fl exi bi 1 i ty to upgrade 1 evel of treatment.
* No i nfrastructu re devel oped i f certtral comnuni ty treatment system
i s requ i red . ~
MITIGATING MEASURES
Earth
* Minimize areas of soils disruption. ~
* flulching and landscaping of disturbed areas.
* Fol l ow natu ral con tours of 1 and .
* Measures to prevent erosion and stabilize soils.
Air
* Application of water or dust pallative to reduce dust from con- ~
struction.
* Traffic detouring where required.
4
•
~
* Implenentation of Federal Automo6ile emission control standards.
* Proper operatTOn and maTntenance,of sewage treatment plant to
~ eliminate odars.
Water
* Addition of denTtrTfTCatTOn nnTt operations to treatment plant.
* Central collectTOn and treatment provides flexibility to meet
future needs.
Infrastructu re for communrty systen developed.
* Proper drainfield selectTOn.
* Reduce significantly the density of the developnento
* Operation of monitoring we11s.
* Buffer zone between drairnfTelB location and well locations.
~ Flora
* Site landscapYng rn areas where vegetation removed.
Fauna
Site landscapTng in areas where vegetatTOn renoved.
Noise
* Selective bprming or vegetation along,roadways.
* Sound insulatYOn of homes fin high impact areas.
Orient homes to min7mfze noTSe exposures.
Liqht and Glare
* Landscaping.
* Aesthetic design.
~
Land Use
* Lower density development.
Natural Resources
•
* Design that minimizes resource consumption.
* Utilize energy efftcient design featu res.
Risk of Explosion or Haaardous Emission
None
Population ~
* None.
~
I
~ 5
~
Housi nq '
~
*
None. ~
Transportation/Circulation
* Reduce traffic by encouragIng alternate methods of transportation.
* Roadway system mpnovements.
* Street names consistent wTth surroundTng area.
~
Publ ic Ser-vices
* Increased,property tax revenues.
* Expansion of school dTStrlct facilities.
* Sidewalks Tn vTCinity of schools.
* Temporary busing of students o r realignment of attendance ~
boundaries.
Ener%&
* UtilizatTOn of energy efficient design features.
~
Utilities
* Close coordlination between sponsor and utTllty firms.
* Buffer zone between drainfield and well si'tes.
Huma,n Health ~
NIA
Aesthetics
N/A ~
Recreation
N/A
Archaeological/Historical ~
N/A
UNAVOIDABLE ADVERSE TMPACTS
Earth
~
* Disruption, displacement and overcovering of soils on-site.
* Pave or overbuTld of 30 percen't of site.
Air
* Uncontrollable dust du ring construction phase. ~
* Increased emissions from vehicl,e traffic.
~ 6 ~
Water
* Alteration of surface water absorption characteristics.
Potential surface water contaminatTOn of ground water.
* PotentTal ground water contamination fram disposal of treated
waste water effl uent.
Flora
Renoval of 160 acres of margTnally productTVe farmland.
Fau na
* Olsruption of wildlife habitat.
* Minimal reduction fn num6er of specTes.
~
Noise
* Some increase in ambient nolse levels during construction.
* Increase in noise levels due to Tncreased vehicle traffic.
~ Land Use
* Converslon of 160 acres of marginai farmland into more intensive
residential use.
Natural Resources
4
* Direct and indirect consumption of natural resoUrces for building
material and energy.
* 160 acres of margTnal farmland taken out of production.
Risk of Explosion or Nazardous Emission
~ * -
None.
Population
* Increased demand for public services and facilities.
~ Housing,
* None.
Transportation/Circulation
Generation of additional traffic over exlsting roadway systens.
r
Public Services
* Increased service requirements for police and fire protection, ~
~ educational and recreational facil ities and roadway maintenance
~ 7
~
* Addition of 500 students to school district enrollment.
* Temporary overcrowding Tn school dYStrict facil ities. ~
, EnergX ~
* Direct and indTrect increase in consumption of energy for
space heating and cooling and transpo rtation.
`Util ities
~
* Increase in utilrty servrce requiranents for the area.
Human Health
N/A
Aesthetics
N/A
,Recreation
N/A ~
Archaeotogicai/Historical
N/A
. ~
~
~
~
~
8 ~
~
IMPACT SUMMARY
~
OESCRIPTION OF THE PROPOSED ACTION
The project consists of the phased addition to the existing Midilome
Addition residential subdivision. The project is located south of Oppor-
tunity in the northeast quarter of Section 33, Township 25 North, Range 44,
~ Spokane County, Washington. The location of the proposed project site is
shown on the following vicinity map.
The sponsor of the project is Midilome, Inc., a Washington corporation.
The project sponsor has submitted to the Spokane County Planning Department
applications for preliminary plat approval and zone change from Agricultural
~ to Single Family Residential for the proposed subdivision. The proposed
plat consists of a total of 160 acres of which approximately 25 acres have
already been approved. The application proposes a total of 425 lots (including
the 72 already approved) at a gross density of about 2,6 units per acre. The
typical lot size would be 85 feet frontage by 125 feet deep or about 10,500
square feet. A site map and plat design showing the location of the existing
0 development and the proposed additions are shown on the following pages.
The proposed project will be a moderately priced suburban residential
development. It will include only single family residential units that wi11
range in price from $40,000 ta $60,000. The project will be constructed in
phases and it is anticipated that it will take three years to complete.
~ Lots within the proposed subdivision wi11 be marketed to individual builders
who will then construct the homes and sell them to their eventual owners.
it is anticipated that Federal Housing Administration guaranteed mortgages
will be utilized and therefore the plat is being submitted to the federal
Department of Housing and Urban Development for approval.
~ An interior road system serving the development will ]ink the project
with existing State and County roadways. All roads within the project site
will be constructed prior to occupation of the homesites. Al1 interior
roads will be curbed and paved to the maximum specification of Spokane County
and will provide a 50 foot right-of-way At the present time sidewalks
are not included within the scope of the proposed development, but could be
added later if justified by circulation or traffic safety needs.
~
All utilities will be brought to the building site underground. Elec-
tricity and natural gas services will be provided by the Washington Water
Power Company. Water wiil be provided by the Model Irrigation District.
Storm drains will be designed and provided as necessary to dispose of sur-
face water runoff from rain or snowmelt on-site.
~
It is proposed that the existing package treatment plant be expanded
to provide waste water disposal for the entire project site. The package
treatment plant will be an activated sludge extended aeration system. Ex-
cept for the 21 units in Midilome Addition not on individual on-site septic
tanks, a11 wasfie water from the project site will be centrally collected
~ and treated. The treated effluent will be disposed of in a sub-surface
drai nfiel d.
~ 9
1
~
.
L aI seem" twr p / .
~
Pwr wor 0
Nln° MUc Mtad` A, / .
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Pfemsnl Rrohle •
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~ n~r~tu~ ~~h1Yn1Y ' ~ I
~
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~
~ . 32ND AVENITE ~
~
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~ Existing Portion ~
~ . .
~
Midilome Addihon
~
~
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~ 40TH AVENUE ~
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- BaTE MAP
~
. ~ /f1hVR7}I L~ 1,vOEdS(1~ I~G~
ConroGsntr mim,rvnRernruf ,cRays+g. ofsnIalij tmlwmur 12~ Feet
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. 32ND AvLN4E ~
z 3 a s ~ 7 S 9
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3 u 1 n ~
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- /3 B i
' 40TH AVENl1E
~~L _ -"=;~T~`~-• . r• ~ .
, SOURCE Clarence E Smpson Engineers, Inc.
~
,
~ PLAT DES ~
IGN •
~
Nic~'ORTft L j%v&Rs<xv rN*c..
~ (:onu.lr.t+tr in r uTrurtrnnu.tl ui'tlrar pGntntrrQ eto ra Krrr 1200 Eeet ~ i
1
~
12
~
EXISTING CONDITIONS
The material in thts sectTOn Ts a brief summary of information de-
~ veloped in considerably more detaTl Tn AppendTx A to this EIS. To facili-
tate cross referencing for those reviewers wTShing more information about
a given subject area, the present sectron has been stru`ctured to parall el
the basic categorical structure of Appendix A. Page references to the rele-
vanL portions of AppendTx A are provided at the beginning of each section
be1 ow.
~ Elements of the Physical EnvTronment (see pages 41-110) -1
1. Earth (see pages 41-47)
The site for thd pronosed project is located on a relatively flat,
~ slightly undulating arid sloping plain of glacial and flood deposits on
the Spokane Valley floor, The geoiogical substructu re is composed of
unsorted deposits of boulders, cobbles and gravel mixed with sand in
places. The two major soil serles fovnd on the project site consist of
Springdale (Sx6) and Garrison (Gm6), and present few constraints on the
d evelopment of the proposed project. The topography of the site is rela-
~ ti vely fl at wi th sl opes of 1 ess than five percent. Tfti s fl at terrai n wi th
soils that are characterized 6y rapid permeability result in a situation
of slight erosion potentialo There are no unique physical features on or
about the project si te.
2. Air (see pages 47-56)
~ The air quality in the area of the pro3ect site is dominated by the
atmospheric stability of the Spokane river valley and the industrial and
traffic related emissions generated on the valley floor. The site is lo-
cated in an area where there are presently no violations of any ambiQnt
air quality standards and is not within the designated nonattainment area
for Spokana. County. There are not any unusual or obnoxious odors present
• on the project site.
3. Water (.see pages 56-103)
• There is no surface water on the proj ect site, nor are there any
major drainage channels or poorly drained depressions. The site is well
drained with most storm water disposed of on-site by absorption. The site
is not a flood plain.
The project site overlles the Spokane-Rathdrum Prairie aquifer, which
~ is the primary source of drinking water for approximately 350,000 persons in
Washington and Idaho. The project site is located near the margin of the
aquifer in the area south of Opportunity. In this area the aquifer has a
lower flow rate and transmissivity and is thinner than in the main body
of the aquifer to the north. These conditions result in lower ground water
velocities near the project site and possibly less mixing. The depth to
~ the water table is 70-90 feet in the vicinity of the site.
13
•
~
The aqu i fer is recharged by percol ati on of su rface water runoff and
underflow from adjacent highlands, by percolation of precipitation, by
seepage from the Spokane river, by seepage from lakes which lie adjacent
to the aquifer and by percolatTOn of irrigation water dlverted from sur- ~
face water sources. Some surface recharge probably occurs in the area
south of the project site at the sTnk area where Plouf Creek disappears.
The literature and data to date continnes to show a conflict over the
probabil ity of waste water dlsposal drainfields as a source of aquifer
recharge.
Auailable water qualTty data Tndicate that the aquifer generally ~
yi e1 ds water of excell ent qua 1 i ty. Contani nant 1 evel s i n excess of the
Federal drinking water standards have 6een exceeded in only a small num-
ber of the many samples that have been taken from the aquifer. Some of
these violations have occurred Tn the vTClnlty of the project site, bu t
have been related primarlly to lron levels which is related to aesthetic ~
rather than heaith considerations. The avaTlable water quality data show
that while the concentration of any one chemical constituent may vary from
sample to sample at a particular site, there are no long-term trends in
changing water quality apparent. No trend of changing nitrate levels are
apparent from the datao The ava7la6le water quality data does indicate
that there are some water quallty variations within the aquifer. A moderate ~
increase in salt content in the aquifer has been noted as it passes from
the state line through the Spokane area. The source of this increase in
salt concentration is unknown at this time but could be related to surface
recharge or natural geologic and hydrologTC mechanisms. Preliminary data
also indicates that some areas near the margTn of the aquifer, including the
project site, have higher salt concentrations than does the main body of the
aquifer to the north. The higher salt concentrations may be the result of •
lack of mixing and flow in the margins of the aquifer or may be the result
of surface runoff from the adjoining hTlls or surface recharge from the
area above the aqulfer. The results of depth selective samplings to date
indicate that the ground water generally is of uniform quality over depth.
4. Flora (see page 104) ♦
The project site contains about 160 acres of land which at one time
was cultivated with agricultural crops. At the present time about 60 acres
of the site are in cultivation with alfalfa. The renainder of the site sup-
ports a continuous cover of herbs and forage grasses, mostly weeds and
alfalfa persisting from prior cultivation. ♦
5. Fauna (see pages 104-105)
The project site provides a habitat for a variety of wildltfe species.
Pligratory species that may ocassionally be found on the site include white
tail deer, cougar, bobcat, striped skunk and jack rabbits, as well as a ~
variety of upland game birds. There are no rare or endangered species
inhabiting the site. There are no on-site fish habitats.
•
14
•
,
~
6. Noise (see pages 105-107)
The ambient naise levels 1n tfie YmmedTate vTCinity of the project are
~ generally low, with a background level of 44-48 decibels. This is attribut-
able to the relatively undeveloped nature of the location. Noise intrusions
are primarily due to traffic flow with 1 evel s ranging from 49 to 51.
Monitored peak levels from the slteiranged to 61 decibels.
7. Lljht and Giare (see pages 107-108)
~ -
There are no sources of 1Tght and glare in the interior of the proJect
site. Around the boundaries there a re street lights.
8. Land Use (,see pages 108-109)
~ The project site is located south of the Opportunity suburban area,
and lies between developed residentral areas to the north and vrest and
vacant or agricultural land to the east and south. At the present time
about 60 acres of the project srte Ts cnltivated with alfalfa with the
balance cleared and vacant land. Tf1e project slte is zoned agricultural.
0 9. Natural Resources (see pages 109-110)
Approximately 60 acres of the project site is currently cultiva ted
with alfalfa. In the past the entrre project site was used for the culti-
vation and production of agricultural crops. The site is considered
only marginal farm land and past yTelds have not been exceptional.
•
10. Risk of Explosion or Ha2ardous Emission (see page 110)
N/A
El enents of the Human Envlrornnent (see pages 111-125)
~ 1. Population (see page 111)
The population of the Spokane Valley has experienced steady and rapid
growth since 1960. Population projections indicate that the recent histori-
cal growth trends will continue.
~ 2. Housin2 (see page 112)
Housing, as a function of population, has shown a steady and rapid
rate of growth in the Spokane Valley. The Spokane Valley is the portion of
the County experiencing the most rapid rate of growth.
~ -
3. Economics (see pages 112-113)
Pri-or to development the project site had an assessed valuation of
$114,800 which produced real estate taxes of $2,688 du ring 1977. ,
~
~ 15
~
4. Transportation/Ci rcul atTOn (see pages 113-117 )
The project site is served by a network of state and County roads.
Pines Road, Bowdish and UnTVersity streets a re the prima ry no rth-south •
traffic carriers i n the area connecting the area south of Opportunity with
Sprague Avenue and Interstate 90. P1nes Road and the Dishman Mica Highway
both provide direct access to Interstate 90, approximately 2.5 miles north
of the project site. 32nd Avenue Ts the prTmary east-west traffic carrier
in the vicinity of the project sYte.
•
5. Publ ic Services (see pages 117-122)
The project site is located wTthln the 6oundaries of Fire District No.
1, which serves an area of approxTmately 74 square miles in the Spokane
Valley. The Fire District operates six stations in its service area at
the present time. The cl osest stati on to the project si te i s Station No. •
1 located at E. 10319 Sprague Avenue.
Law enforcement servTCes are provided by the Spokane County Sheriff's
Department. The project si te 1s 1 ocated i n patrol di strict no. 3 which
covers about 50 square miles in the Spokane Valley.
•
The projected site is located wTthin the Central Valley School District.
The District operates 18 school facllities from grades kindergarten through
high school. Nearly all of the schools in the district are operating at
or near their design capacity. The district has under contract the construc-
tion of two e]ementary schools, 6oth of which will be in operation no later
than Septenber of 1979. The d i strict is now f i nal i zi ng pl ans for the con- ~
struction of a new high school and junior high school as well and one
additional elementary school. Existing plans call for these schools to be
in operation by September of 1982.
The proposed project would be served 6y the parks and recreation
program of Spokane County. The County is at the present time developing ~
a park site adjacent to the project.
6. Energl (see pages 122-124)
At the present time the project site does not include any consumption,
transfer or generation of energy except for the first phase of the project ~
which is now under developnent. Electricity and natural gas are served to
the area by the 4lashington Water Power Company.
7. Ut7lities (see pages 124-125)
The project site is not presently served with water. There are private ~
wells near the project site that are used for irrigation of nearby agricul-
tural fields. It is proposed that the project site be annexed to the Mode1
Irrigation District.
Ualley garbage service provides solid waste disposal services for the
Spokane Valley area. The waste is disposed of at the Spokane County operated ~
sanitary landfill at Mica, Washington.
16 .
i
~
8. Human Health (see page 125)
The proposed project site does not presently pose any hazards or risk
~ to human health.
9. Aesthetics (see page 125)
The project site is cleared and vacant farmland and retains no signif-
icant or unusual aesthetTC valueo
•
10. Recreation (see page 125)
There are no existing or planned public recreation facilities in the
project area.
~ 11. Archaeological/Historlcal (see page 125)
The site of the proposed project does not include any significant
archaeol ogical or historical resources,
~
•
~
~
~
~
17 ~
~
~
THE PROBAaLE IMPACT OF THE PROPOSED aCTION
The material in this section is a brief summary of information de- ~
veloped in considerably greater detail 1n Appendix A to this EIS. To facili-
tate cross-referencing for those revlewers wlshing more information about
a given subject area, the present section has been structured to parallel
the basic categorical analysis of Appendix A. Page references to the rele-
vant portions of Appendix A are provlded at the beginning of each section
below.
•
Elements of the Physical Environment (see pages 41-110)
1. Earth (see pages 41-47)
The proposed actron will not result in any unstable earth conditions
or changes in geologic structures. The proposed action will result in the ~
disruption, displacement, compaction and overcovering in those portions of
the site designated for development. Approximately 30 percent of the pro-
ject si te iji 11 be ei ther bui 1 t upon or paved over. No significant al tera-
tions in the overall topographical character of the project site are anti-
cipated.
•
The development activities such as excavation, grading and Tot con-
touring will remove the existing vegetatTVe cover from the on-site soils
and increase the potential for both wind and siater erosion. This potential
would be the greatest during the construction phase of the pnoject.
2. Air (see pages 47 -56) ~
During the construction phase of the project, dust and particulate
emissions from land clearing and Building activities is a potential on-site
nuisance pro6lem, but 1s not expected to have any perceptible impact on am-
bient air quality levels in the area.
•
Except for emissions from space heating, fireplaces, and air condition-
ing systems, the proposed project will not be a direct source of any air
pollutants. The operation of the development will be an indirect source of
pollutants in that it will tend to attract additional automobile traffic to
the area. The anticipated traffic generation as a result of the project
is not signiflcant enough to result in any perceptible increase in ambient ~
pollutant concentrations.
The project may involve the expansion of the existing sewage treatment
plant on the proJect site. Such plant may be the source of obnoxious odors
when not operated or designed properly.
•
3. Water (see pages 56-103)
The proposed project will result in the constructio n of impervious sur-
faces over about 30 percent of the project site. The creation of impervious_
surfaces over the soil will disrupt and alter existing surface water runoff
and absorption characteristics. Surface water runoff from the site will be ~
disposed of in a systen of dry wells and catch basins with no provisions
made for the treatment of this water. Storr,~ water runoff can be expected to
contain minor amounts of ground water contaminants lncluding suspended
18 ~
~
solids, petroleum based hydrocarbons, dissolved inorganic salts among others.
~ The majority of the contaminants are sub3ect to substantial removal as the
water percolates through the soi1 column above the ground water.
The project is located near the margin of the aquifer where the trans-
missivity and flow of the aquifer are lower than in the main body of the
aquifer. While it is not anticlna ted that the proposed project will have
~ any effect on the geology or the hydrology of the aquife r, the existing con-
d,itions will have a bearing on the potential for water quality degradation
from project related effluents.
It is estimated that the proposed project a»11 result in the withdrawal
of about 14.9 million cubic feet of water annually from the aquifer for domes-
~ tic, sewage disposal and irrigation uses, of which about 6.1 million cubic
feet per year would be available for recharge to the aquifer. This anticipated
consumption represents a very small percentage of the total flow of the aquifer
_ and poses no threat to existing supplies. ~
~
The proposed project will result in the disposal of treated waste water
~ effluent to a subsurface drainfield located above the aqulfer. The project
will generate an estimated 6.2 million cubic feet of waste water per year, a
portion of which would be available for percolation to the ground water.
The chemical constituents of the treated waste water are potentia] contami-
nants of the ground water. While the effluent from the proposed activated
sludge sewaqe treatment system is improved over that of septic tank systems
and is presently considered the best available and reasonable method of
~ waste water disposal for the project, the system is relatively ineffective
in removing dissolved so7ids including nitrates from the waste water. The
quality of the potential effluent reaching the aquifer from a subsurface
drainfield will be improved over the quality of the effluent discharged to
the drainfield because of biochemical treatment mechanisms that occur as
the effluent passes through the soil column above the ground watery Soi1
~ systems do not generally retaln anions including nitrates, chlorides, sul-
fates and bicarbonates. These dissolved inorganic material move with the
drainage waters and may pose a potential threat to ground water quality.
It is not expected that the proposed project will result in the violation
of any drinking water standard.
~ 4. Flora (see page 104)
The proposed action with its subsequent development would result in
the permanent disruption of the current agricultural use of the project site.
Approximately 160 acres of marginal farmland will be taken out of production.
~ Most of the herbs and grasses that exist on the uncultivated portion
of the project site will be removed for the construction of roads and resi-
dential structures. The existing flora will be replaced with domestic lawns,
shrubbery and fol i age.
5. Fauna (see pages 104-105)
~
19
4
~
It is anticipated that the proposed project would result in some de-
crease in the number and/or diversity of wildlife that inhabit the area. ~
The construction of the residential development would result in a permanent
disruption of habitat for the large game animals. The smaller game animals
may be forced to relocate but should generally remain in the project area.
6. Noise (see pages 105-107)
~
During the construction phase of the project some increase in ambient
noise levels will occur as a result of heavy duty vehicle traffic to and
from the project site and the operation of construction equipment on-site.
Upon completion the development should not result in any exceptional
noise levels Vehicular traffic and typical suburban residential activity @
will constitute the primary noise sources.
7. L~ht and Glare (see pages 107-108)
The proposed development will replace natural land cover with human
settlement features which will add new sources of li,ght. This change will 4D
include new artificial street light on the site itself to satisfy safety and
lighting requirements and allow for safe circulation within the site
J S. Land Use (see pages 108-109)
The proposed project would result in a change in the land use of the ~
site from vacant and cultivated agricultural land to a single family residen-
tial use. The proposed project provides for the construction of a total of
425 residential units on about 160 acres of land at a gross density of about
2.4 units per acre.
The density of the proposed project is compatible with the surrounding ~
residential uses. In addition the proposed high density residential use is
necessary to economically support the development of the utility and servi°ce
infrastructure which will serve the development.
9. Natural Resources (see pages 109-110)
The development of the Midilome residential subdivision will result in ~
the use of lumber, concrete, and other building materials in the construction
of homes and the corresponding infrastructure of utilities and streets. In
addition to this consumption of natural resources, the development will also
decrease the land area now supporting the production of agricultural crops,
although only a portion of the project site is currently in cultivation. The
land itself will be committed to the proposed suburban residenti°al use for ~
the foreseeable future, and the investment in improvements will reduce the
options for alternative future uses of the site.
10. Risk of Explosion or Hazardous Emission (see page 110)
The risk of explosion or release of hazardous substances will be a tem- ~
porary one during construction phases of development. It will be limited to
20 ~
~
construction equipment accidents and improbable natural gas releases during
installation of the utility infrastructure needed to serve the residents.
~ Once the development is completed, a11 safety requirements will have been
met and no upsets would be probable.
Elements,of the Physical Environment (see pages 111-125)
1 Population (see page 111)
~ The proposed Midilome residential development would provide a total of
425 units over a three year period. Assuming an average population of 3.2
persons per dwelling unit, this project when fully developed would house a
tctal population of 1,300 persons.
~ 2. Housinq (see page 112)
The Mi,dilome subdivision will provide a total of 425 single family
housing units when completed. It is anticipated that complete development
of the project will occur in phases over a three year period.
~ 3. Economics (see pages 112-113)
Construction costs for the proposed development are estimated at about
$11,000,000. An undetermined number of jobs would be created during the
three year construction pe riod of the project. An increase in personal '
income and tax revenues in the local economy would result during the con-
~ struction phase of the project. When fully developed it is estimated that
the project wi 11 generate a total of approximately $440,000 per year in
local property tax revenues.
4. Transportation and,Circulation (see pages 113-117)
~ Construction related traffic generated by the project is not expected
to be significant and would be distributed over the three year deveiopment
of the site. When fully developed it is anticipated that the proposed pro-
ject would generate an average of 3,400 vehicle trips per day.
The development wi11 include an extensive internal roadway system that
~ will integrate with the existing roadway network. All roads within the
project site will be curbed and paved to maximum County standards.
5. Public Services (see pages 117-122)
Some increase in the fire and police protection services wi11 be re-
quired as a result of the development of the proposed project and projected
~ population increases attrlbutable to the proposed project.
It is anticipated that the proposed project will result in an enroll-
ment increase of 500 students in the Central Valley School District The
cumulative effect of this and other growth wlthin the district is placing a
severe strain on existing district facilit'ies.
~
~ 21
~
The overcrowding that now exists in district elerrtentary schools will
be a problem during the 1978-79 school year. This pressure will be relieved ~
by the opening of the new Greenacres elementary school in September 1978 and ~
the Ponderosa School in September of 1979'. School district officials have
indicated that with the opening of these new schools, the Chester Elementary
would then be able to accommodate the students from this subdivision.
The impacts on the junior and senior high school from the project are
expected to be more severe. These schools are now operating near capacity
and the district p1ans for new facilities probably cannot be implemented ~
by the time that the students from the subdivision enroll. This could
cause some temporary overcrowding in these facilities until a new junior and
senior,high school are opened.
6. Energy (see pages 122-124)
~
It is estimated that when fully developed the project will consume ap-
proximately 250,000 therms of natural gas and 1.5 to 2.0 million kwh of
electrical energy per year. Current energy sources are adequate to serve
the project. The project will also result in an indirect increase in the con-
sumption of energy and fossil fuels for transportation.
~
7. Utilities (see pages 124-125)
The proposed project will result in an increase in utility service re-
quirements. Water consumption within the project site is estimated to be
14 million cubic feet per year. It is estimated that the project wi11 generate
6 million cubic feet per year of sewage. The sewage treatment plant effluent ~
will be disposed of in a sub-surface drainfield. It is estimated that the
proposed project will generate approximately 1,100 tons of solid waste per
year when fully developed. This waste will be disposed of at the sanitary land
fill at Mica, Washington operated under the supervision of Spokane County.
8. Human Health (see page 125) ~
Pl/A
9. Aesthetics (see page 125)
N%A ~
10. Recreation (see page 125)
N/A
11. Archaeological/Historical (see page 125)
~
N/A
~
~
22
~
~
THE RELATIONSHIP BETIJEE(U LOCAL SHORT TERM USES OF M14N'S ENVIRONMENT AND
~ MAINTENANCE AND ENHANCEMENT,OF LONG TERM PRODUCTIVITY
The development of the project site into a more urban character wi11
have an impact on the long term productivity of the prope rty, in terms of
its present limlted agricultural use. Experience has shown that the agricul-
tural productivity of tiie project site 1s marginal The area is not designated
~ as prime agricultural land and crop yieids from the site in the past have not
been exceptional. The development of urban areas surrounding the project site
also diminished its future potential agricultural uses. If the land were not
,developed at the present time it is unlikely that the property would remain
in an agricultural use for any significant period of time. The reduction in
the limited agricultural use, considered in light of the increasing demand
~ for moderate priced housing in the Spokane area, may be considered an enhance-
ment of the long term productivity of the area
The development of the proposed project on the surface above ground
water supplies may have an impact on the long term productivity of the aquifer
as a supply of drinking water for the Spoka'ne area. The cumulative impact
~ of the proposed project and other urban development over the aquifer utiliiing
sub-surface drainfields for disposal of treated waste water may pose a threat
to ground water quality for drinking water purposes. The sewage treatment
system proposed for the project is considered the best available and reason-
able treatment system available for a project of this size and scflpe. It is,
however, designed as an interim facility that can be added to as new tech-
0 nology becomes available and the need arises, or can be connected to a central
municipal sewage treatment facility if one is constructed for the Spokane
Yalley. ~In this context the proposed project is not expected to have an ad-
verse impact on the long term productivity of the aquifer as a source of
drinki ng water.
~
~
~
.
~
23
~
IRREVERSIBLE AND/OR IRRETRIEVABLE COMMITMENTS OF RESOURCES ~
The proposed project should not involve any significant commitments
of resources that would be considered irreversible and/or irretrievable.
There will be an increase in the consumption of energy and other resources
during the construction phase. These are essentially the labor, power,
petrochemical fuels and building materials required to prepare the ground ~
and build the structures. Such utilization of resources, although irre-
trievable, is not perceived as being exceptlonal or atypical in the pro-
cess of urban growth and development. The new devetopment will also cause
the consumption of energy in the form of electricity and fossil fuels after
the construction phase, when homes and other facilities are pl,aced into
use ~
A total of 160 acres of land will be required for the development of
the Midilome subdivision. The conversion of this 160 acres of marginally
productive agricultural land into a suburban residential development is an
irreversible commitment of land to such a use. Although irreversible, the
commitment of the land to residential purposes is considered a more pro- ~
ductive use of the land.
Through the use of a sewage treatment system with disposal of treated
effluent to a subsurface drainfield there is a commitment of the soil and
ground water underlying the project site for th'is purpose. This comnitment,
however, is not irrevers,ible. The use of the packaqe sewage treatment
facility is considered an interim facility that can be upgraded when new ~
technology becomes available and the need arises or connected to a central
municipa1 sewage treatment facility for the Spokane Valley if one is even-
tually constructed.
~
s OD
/
~
~
24
•
~
MEASURES TO MITIGATE ADVERSE IMPACTS
~ The material in this section is a brief summary of information developed
in considerably greater detail in Appendix A to this EIS. To facilitate
cross-referencing for those reviewers wishing more information about a given
subject area, the present section has been structured to parallel the basic
categorical analysis of Appendix A. Page references to the relevant portions
of Appendix A are provided at the beginning of each sectlon below.
~
Elements of the Physical Environment (see pages 41-110)
1. Earth (see pages 41-47)
Impacts to existing soils conditions should be minimized by containing
~ earth movement within the road rlght-of-way corridors, foundation areas,
and other sites requiring reconfiguration of existing soils. Where soils
have been disturbed they should be returned to natural appearance or built
upon or landscaped. Compacting and overcovering of soils should be mini-
miZed to the extent possible by utilizing allowable minimum width roadways
and providing off-street parking.
B
During the design phase, consideration was given to slope, soil con-
ditions, natural drainage patterns, and natural ground coverings so that
their disturbance was minimized. If at all possible, natural vegetation
shou+ld not be disturbed, as they presently retard erosion. Road layout and
trenching for water and sewer lines should follow natural contours as much
~ as possible. An adequate storm drainage system will collect excess runoff
from impervious surfaces, thus reducing erosion potential. During the con-
struction phase, mitigating measures such as mulching can be applied to road
cuts and fill to reduce direct erosioh hazard. Beyond the construction phase,
permanent ground cover should be established on road cut and fill areas and
over subterranean water, sewer and utility lines to stabiliae exposed slopes.
~ 2. Air (see pages 47-56)
During the construction phase of the project, it is anticipated that any
dust or particulate emissions will be controlled by the use of water sprays
or other techniques as required by Spokane County Air Pollution Control
~ authority regulations. automobile traffic related emissions may be controlled
during the construction phase by appropriate detouring when necessary to pre-
vent construction related traffic congestion or delays.
Implerrentation of Federal automobile emission control standards will
reduce automobile related pollutant emissions after completion of the develop-
~ ment.
Proper operation and maintenance of the sewage treatment plant will
minimlze the potential for obnoxious odors.
~
3. Water (see pages 56-103 )
~ The potential impact of nitrate contaminat7on of the ground water could
be mitigated by the addition of nitrification and denitrification unit opera-
tions to the proposed waste water treatment facility. These operations are
extremely expensive when applied to small treatment facilities. In addition
they add significantly to the complexity of operation of the p7ant, increasing
46 25
~
the possibillty of system malfunction and upset. At the present time nitri-
fication-denitrification unit operations are not employed on any sewage
treatment facility tn Spokane County, including the City of Spokane treatment ~
plant.
The selection of an interim package treatment facility for the proposed
project is a factor that will mitigate the long-term impact that the project
may have Such interim facilities are not designed to be permanent installa-
tions but have the flexibility to be modified to provide a greater level of ~
control or be replaced in the future by centraltreatment facilities or by
more elaborate smal1 systems. The collection and distribution system is a,l-
ready provided and the cost of connection to a central treatment facility
would be minimized if it is determined that such a facility is necessary.
Proper drainfield site selection will also mitigate the potential for
ground water contamination from percolation of drainfield effluent The ~
dralnfield should be located to avoid areas where the water table is shallow,
slopes are steep or soil permeability is excessive,ly high or low.
The potential impact of this project could be mitigated by reducing
the density of the proposed project. This would have the effect of reducing
proportionately the level of contaminant that must be controlled, treated ~
and/or disposed of on the surface above the aquifer. Lowering the density
of the proj ect, however, may work against an ultimate solution to the prob-
lem of ground water contamination from drainfield effluents. Low density
developments will'be substantially more expensive to sewer if it is deter-
mined at the completion of on-going studies that a central sewage treatment
~ facility is needed for the Spokane Valley. ~
The potential of project related drainfield or surface water effluent
contaminating the ground water could be mitigated or prevented by the
operation of monitoring wells between the contaminant source and drinking
water supply wells. These wells could be used to identify water quality
trends or problems at the earliest possible time. ~
4. Flora (see page 104)
The disturbance or removal of existing natural vegetation may be miti-
gated and in many areas enhanced by the use of domestic landscaping.
•
5. Fauna (see pages 104-105)
The retention of as much natural vegetation as possible will preserve
some habitat for the smaller game animals and birds. Landscaping and planting
of various shrubs, trees and foliage will encourage certain fauna species to
co-exist with humans in an urban environment. ~
6. Noise (see pages 105-107)
The noise levels for normal residential activities and increased traffic
cannot be reduced. Selective berming along heavily travelled rights-of-way
or design features such as the absence of windows facing the noise source ~
could attenuate noise levels for adjacent residents. Those dwelling_units sub-
ject to higher noise levels could be sound insulated with heavier walls and
double paned windows, and oriented to minimize intrusion of noise into the
more sensitive living areas. '
~
26
~
The use vf properly maintained equipment with accepted noise attenuatinj
apparatus will help to reduce certain noise levels related to on-site con-
~ struction.
7. Light and G1 are (see pages 107-1 08)
Street lights will be designed to County requirements and to create an
aesthetically pleasing image in the neighborhood. Retention of as much
existing vegetation as possible would help to reduce the impacts of 1ight
~ and glare.
8. Land Use (see pages 108-109)
The impacts resulting from the increase in the intensity of the land
use of the site could be mitigated by the development of a lower density
~ projec,t. This, however, would have the effect of increasing the price of
the housing units and limiting partialty the housing opportunities for
moderate income families. In addition it could effect the economic feasi-
bility of providing a utility infrastructure for the project
9. Natural Resources (see pages 109-110)
~
The consumption of natura] resources during the construction phase of
the proj ect can be minimized through architectural design and the implemen-
tation of energy conservation techniques. The consumption of natural resources
during the operation of the facility can be minimiZed by the utilization of
ene rgy efficient design features.
~
Elements of the Human Environment (see pages 111-125)
1. Population (see page 111)
None.
~
2. Housing. (see page 112)
Restrictive covenants requiring approval of construction plans will
help gua rantee that the design of the housing units integrate with the other
housing in the a rea and the environmental characteristics of the project
~ site
3. Economics (see pages 112-113)
None.
~ 4 Transportation and Circulation (see pages 113-117)
Transportation impacts can be mitigated by reducing project related
traffic through encouraging the use of carpooling and by improving the road-
way netwo,rk in the vicinity of the project site The naming of the streets
within the project site to be consistent with the surrounding roadways would
ID help circulation in and around the project site.
5. Public Services (see pages 117-122)
27 '
~
~
In general the increased demand for public services as a result of
the project wiill be mitigated by the increased property tax revenue gen-
era ted as a res ull t of the project. OD
The impact on the elementary schools will be mitigated by the expansion
of facilities planned by the distr-ict over the next 18 months. The peak ,
impact from the proposed subdivision would not occur until after the new ~
facilities were opened ~6ecause the elementary school lies adjacent to the
proposed project the safety of children walking to school could be enhanced
by a provision for sidewalks, on at least one side of the street, in the ~
area near the school.
The impact on the junior and senior hlgh schools would be only temporary
until the district were capable of opening new facilities to accommodate the
growth in housing within the district. The temporary impact could be miti-
gated by the realignment of school attendance boundaries and busing students ~
to less crowded facilities in the district.
6. Energy (see pages 122-124)
The proposed development could employ innovative,conservation measures
which would result in reductions in potential energy consumption. The re- ~
quirement for plan review by the developer will result in the opportunity to
incorporate construction design features to obtain greater efficiencies in
the utilization of energy resources
7. Utilities (see pages 124-125)
~
The closeicoordination betweenithe project sponsor and the effected
uti1 i ti es shoul d mi ti gate potenti al prob,l ems.
The location of any new wells on the proj ect site should take into
careful consideration the,proximity and location of the proposed sewage
treatment drainfield. ~
8. Human Health (see page 125)
N/A
9• Aesthetics (see page 125) ~
N/A
10 Recreation (see page 125)
N/A
~
11. Archaeoloqical/Historical (see page 125)
NJA
~
28
~
~
ALTERNATIVES TO THE PROPOSED PROJECT
• The SEPA Guidelines require the EIS to include ..a description and
objective evaluation of any reasonable alternative action whlch could feasi-
bly attain the objective of the proposal". These guidelines [WAC 197-10-
44002)] note that reasonable alternatives shall include any action which
might approximate the proposal's objective, but at a lower environmenta] cost
or decreased level of environmental degradation. Also, the use of the term
q "reasonable" is intended to limit both the number and range of alternatives
that shall be described and evaluated, as well as the amount or level of
detail which the EIS sha11 employ for each alternative that is discussed and
evaluated. The analysis of alternatives should be, however, sufficiently
detailed to permit a comparative evaluation of each alternative and the pro-
posal.
~ The alternatives to the proposed resrdential development that may be
given consideration include: (1) retain the project s,ite in its present
undeveloped stat,e (no action); (2) development of the project on an alter-
nate site; (3) develop the site with a different concept and at a lower den-
sity; and (4) alternate methods of waste water disposal that may be utilized.
~ Each of the alternatives is discussed below.
1. Retain the Project Site in Undeveloped State (No Action)
The application of the no-action alternative would mean that the pro-
ject would not be constructed. The site would remain in its present un-
~ developed state with a limited agriculturai use. The land would remain in
this use until some other form of development is undertaken. The area sur-
rounding the project siite is developed in suburban residential uses. It is
probable that the proj ect site would be eventually developed into residen-
tial or residential-commercial uses. It would appear that unless an inte-
grated land use approach is taken to the development of the project site, the
~ piecemeal uncoordinated development of the area would preclude adequate
planning, development and control of traffic, consideration for drainage
and effective methods of waste water disposal The use of an interim package
waste water treatment facility for the area would be impossible for any piece-
meal development of the site.
~ 2. Development of the Project on an Alternate Site
The alternative of developing the residential project in a different
location is not a serious option available to the project sponsor since they
do not own any similar parcels of land. Even Tf this alternative were avail-
able, however, it could result in several adverse impacts. 6uilding areas in
~ the Spokane Valley, comparable in size to the proposed project site, tend to
be located further from the commercial, employment and cultural centers of
the community. This results in the increased use of the automobi]e for travel,
makes mass transportation more difficult to implement; and increases air po71u-
tion, noise and energy consumption. The development of the project on an
alternate site could reduce the potential adverse impact on ground water quality
if the site did not overlie the aquifer or were located over the center rather
~ than the margin of the aquifer.
29
~
i ~
3. Alternate Development Concepts
The development of the project site at a substantially lower density ~
than the 2.6 units per gross acre proposed would have both positive and
adverse environmental impacts. At a lower density the impact of the project
, on traffic generation, air pollution and noise would be proportionately re-
, duced. In addition the expected impact upon school enrollment and the utili-
zation of other community facilities and services would be mitigated. On
the othe r hand development at a substantially lower denslty would result ~
in a higher per unit development cost in terms of both land and utilities.
This would result in an increase in the price of the housing that would be
provided. Even a moderate increase in the price of the housing would tend
to reduce its availability to moderate income families. It is probable that
at a lower density the centralized collection and treatment of waste water
would not be economically feasible and that the use of individual on-site ~
septic tanks would be required. This would have the effect of increasing
the potential for ground water contamination. As is discussed below, septic
tanks are a less effective method of waste water treatment than the activated
sludge system extended aeration system that is proposed. In addition the
lack of central collection of sewage from on-site systems greatly complicates
the task of developing an area wide sewer system for the Spokane Valley. ~
4. Alternate Sewage Treatment Systems
The choice of the most environmentally and economically sound waste
water treatment system can be a difficult decision. A number of variables
must be considered: quality and fate of the final effluent, capital and ~
operating costs (including power consumption and maintenance requirements),
areal requirements, quantity and characteristics of sludges generated, as
well as state and local regulatory restrictions. A wide range of available
options were evaluated with respect to these variables. Specifically, the
following options were explored: on-site treatment and disposal, lagoons
and stabilization ponds; small (less than 1 million gallons per day, MGD) ~
treatment facllities; and land application. Exhaustive description of
each of these options is not feasible in this report, but a detailed descrip-
tion of the options considered most viable on-slte systems and small treat-
ment facilities, is included in the Appendix.
A brief discussion of each of the waste water treatment alternatives ~
considered in terms of effluent quality, operational characteristics and
economics is provided below. These characteristics are summarized in the
following tables.
Land ~ppl i cati on Systems
Most land application systems fall into one of three categories. ~
(1) Rapid Infiltration-Percolation Waste waters are ponded in basins
or in contour ridges and furrows. The soils which receive the waste water
must be very permeable to accept the high application rates, which range up
to 10 feet/week. ~
30
~
ESTIMATED EFFLUENT QUALITY FROM ALTERNATIVE WAStE WATER TREATMENT PROCESSESI
Constituent
SS BODS COD N NN3 P
Incoming Waste Water
225 200 450 40 25 10
Effluent from Treatment Process
Septic Tanks 50 105 - 30 25 8
Acti vated Sludge
Conventional 20 15 90 25 20 1
Extended Aeration 20 15, 90 30 2 8
Contact Stabilization 20 115 90 25 20 7
~ Fixed Fill Reactors
Low Rate Trickling Filter 25 18 140 25 1 7
High Rate Trickling Filter 30 20 140 30 25 7
Tower Filter 30 20 100 30 25 7
Rotating Biological Oisc 25 18 100 25 3 7
Pond or Lagoon
Nigh Rate Aerobic Pond 120 64 - 30 - g
Faculative Pond 100 40 - 20 - 4
Anerobic Pond 100 40 - 20 - 4
Aerated Lagoon 80 25 - 20 - 4
Oxidation Ditch 20 15 - 30 - 7
Land Application
Irrigation 2 2 - 5 1 <1
Infiltration-Percolation 2 2 - 5 1 <1
Overland Flow 10 5 - 5 1 tl
lAdapted from references 69 7, and 8 of Appendix B. page 172.
OPERATIONAL CHARACTERIStIC OF VaRIOUS TREATMENT PROCESSES
Conven- Individual
Rotating Trickling tional Extended Facultative Land Septic
Item Disk Filters Act. Sludge Aeration Ponds Disposal Tanks
Process characteristics
Reliability with
respect to
Dasic process Good Good Good Very Good Good Excellent Good
Influent flow variations Fair Fair Fair Good Good Good Fair
Influent load variations Fair Fair Fair Good Good Good
Law temperature Sensitive Sensitive Good Sensitive Very Sensi- Good Good
tive
Expandability to meet
Increased plant laadings Good, need limited Fair to Good Fair, need Good
additional Good additional
units ponds
More stringent discharge Good, add Good, add Good, add Good, add Add ponds Additional Poor
requirernents wtth respect filtration/ filtrationi filtrationl filtration/ and filtra- pretreat-
to suspended solids polishing polishing polishing polishing tion ment
W BOD Improved by Improved by Improved by Improved by Improved by Lower ap- Poor
N filtration filtration filtration filtration filtration plication
rates
PJitrogen Good, must Good, must Good, add Good, add Good, add Poor
add deni- add deni- nitrjfication/ denitrifi- denitrifl-
trification trification demtrifica- cation cation
tion
Operationai complexity Some Some More Complex Some Simple Simple Simple
Ease of operation/ Very Good Very~Good Fair Excellent Good Excellent Excellent
maintenance
Power requirements Low Relatively Nigh Relatively Low Moderate Low
High High
Waste products Sludge Sludge Sludge Less sludge Less sludge Sludge
Potential odor problems Odors Odors Odors Odors
Site Considerations
Land area requirements Moderate Moderate Moderate Large plus Large plus Large plus
plus buffer plus buffer plus buffer buffer buffer buffer
zone zone tone zone zone zone
Topography Relatively Relatively itelatively Relatively Re1atively Relatively DrainFiel(l
level level level level level 1eve1 level
& ~ ~ 0 41 ~ 40 0 40 0 0
ESTiMATED T,OTAL ANNUAL AND UNiT COSTS FOR ALTERNAT{VE TREATMENT
PROCESSES IJITN A DESI6N FL'OId OF 1.0 MGD
Annual Cost, Dollars3
Unit Cost
Initial Capi~a~ 4 5 Cents/
Process Cost Dollars ~ Cap9tal M Total 1,000 Gal,
Individual Septic Tanks6 800t000 81.832 169669 1049498 28.6
Rotating biological disks 8009000 81,832 579680 145$12 39.9
Trickling filter processes 9002000 98,811 58,480 157,291 43,1
Activated sludge processes
Conventional 1,0009000 109,790 179000 186,194 51 2
Contact stabilization 110006000 1099790 119820 1811,610 49.7
Extended aeration 500,000 541,895 489800 103,695 26 4
Lagoon and pond processes
w Oxldation ditch (►vith settlin ) 5002000 549895 489800 103,695 28.4
W Aerated lagoan (with settling~ 5009000 549895 489800 103,695 28 4
Facultative aerated surface layer) 2509000 219447 24,900 529347 14.3
Facultative ~algal surface laYer) 2500000 21,447 221,400 499841 13.9
Higii-rate aerobic 250,000 279441 249900 529347 14.3
Irrigation and overland flow
Basic system 3409000 37,328 411,540 789869 21.6
Ilith primary treatment 9409000 101302 81,540 1849142 50.6
With secondary treatment 192409000 1369139 115,950 2829089 69 1
Infiltratian-percolation
Dasic system 2009000 215958 25,100 411,058 12 9
With primary treatment 800,000 879832 659100 1529932 41.9
With secondary treatment 150001000 1099790 999510 209,300 57 3
~Adapted from reference 6 of Appendix Q, page 172.
2Based on an ENRCC Index of 1,900.
3Estimated from Table 14,
4Capital recovery factor = 0.10979 (15 yrs, at 7%),
SFrom Table 12,
6Does not include drainfield cost.
~
(2) Overland Runoff• Waste waters are applied to prepared, gently
sloping land so that it flows slowly through a cover crop such as grass.
Some of the water may infiltrate into the soil, but this is not necessa ry. ~
Overland runoff is adapted to impervious soils, particularly in mild cli-
mates, such as those of the southern Unlted States.
(3) Spray Irrigation: Waste waters are applied to annual or perennial
vegetation (including crops and forest lands) using various types of spray
irrigation equipment. Application is usually 1imited to the growing season ~
of the cover crop. This category may be subdivided into high-rate irrigation
(application of > 2.5 in/wk) and low-rate irrigation (application of < 2.5
in/wk).
Surface land application provides the most effective method of waste
water treatment evaluated, and can be viewed as a method of tertiary treat- ~
ment and not merely a disposal scheme Superficially, land application may
appear to be very similar to drainfield (sub-surface) disposal It is, in
fact, generally far more effective in decreasing the possibility of ground
water contamination. This is due to (1) increased evapotranspiration losses
during application; (2) decreased hydraulic loadings on the land involved;
and (3) biological activity of both the cover crop and microorganisms in the w
root zone which polish the resulting percolate far more efficiently than the
deeper soils of drainfields. However, land application as waste water is
not a viable alternative for small scale suburban developments because of
its high cost, complexity of operation and potential public health impacts.
Based on recorrmended loading rates a land application system for the pro-
posed project would require 50 to 100 acres of land. A major limitation of ~
land application in northern states is the climate. Spray irrigation is gen-
erally limited to the growing season. This requires either storage or a]ter-
nate disposal during unfavorable periods of low temperature and periods when
the ground is saturated with rain. Alternative disposal may involve drain-
field discharge or surface water discharge.
Pond and Lagoon Waste Water Treatment ~
Oespite years of experience with ponds and lagoons, the operating de-
sign of these systems is only quasi-theoretical. This has 1ed to a variety
of designs: the use of several ponds in systems which can be operated in
parallel or series; and add-on unit operations (preliminary sewage screening,
final clarifiers, and chlorination facilities). Although there is no consis- •
tent terminology for the basic types of ponds and lagoons, the following
nomenclature is used here.
1. Waste Water Treatment Ponds• Engineered ponds without mechanical
or compressed-air aeration facilities.
A. High-rate Aerobic Ponds• shallow (1 to 1.5 feet depth) ponds, •
with high algal production.
B. Anaerobic Ponds: ponds with high organic loadings (up to
1,000 lbs. BOD5/acre/day) which result in anaerobic conditions
throughout the pond waters.
C. Facultative Ponds ponds with relatively low organic loadings
(15 to 80 lbs. BODS/acre/day) which maintain aerobic surface •
waters and aeaerobic conditions near the pond bottom.
34
~
~
2. aerated Lagoons• Engineered ponds with mechanical or compressed
air aeration facilities.
~ A. Facultative Lagoons: lagoons designed to provide a moderate
degree of physical aeration and mixing, such that sludges
settle to the lagoon bottom and create anaerobic conditions
. near these sludge deposits.
6. Aerobic Lagoons: lagoons designed to provide a high degree
of physical aeration and mixing, such that sludges and incoming
~ soTids remain suspended, and all lagoon waters remain aerobic.
3. Oxidation Ditches: ring-shaped channels using rotating brushes
to provide aeration and having the ability to settle and retain
s ludges .
~ The effluent quality from stabilization ponds and lagoons is marginal,
thus discharge to surface water is limited unless tertiary facilities for
effluent polishing are provided. ulhere not discharged to surface waters the
effluent can be disposed of in sub-surface drainfields. The land require-
ments for a combination lagoon-drainfield operati,on would be very high. For
the proposed project approximately 25 acres would be required. Such a system
~ is not economically feasible for small suburban developments while not pro-
viding an effluent quality si,gnificantly improved over on-site septic tanks.
A non-overflow lagoon would minimize or eliminate the potential for
ground water contamination. However, land requirements for such a system
exceed even those for a spray irrigation land application system.
~ On-S1te Waste Water Treatment
On-site waste water treatment refers to tndividual facilities which
treat wastes from single households. This category includes dry, chemical
and composting toilets; single household lagoons; drywells, septlc tanks and
aerobic treatment units. The most common on-site treatment unit is the septic
~ tank. This system is used extensively throughout the Spokane Valley.
The primary function of the septic tank is to provide an effluent which
wi11 not clog or overload the drainfield. Fo r this purpose they function
well with minimal maintenance, provided that they are pumped as required
to prevent the wholesale flushing of solids to the drainfield. Typically
~ the collection system, septic tank and drainfield, operate on gravity flow
eliminating the necessity of pumps, which additionally decreases maintenance
and operation costs.
The primary drawback from septic tanks and other on-site systems is their
poor effluent quality. The activated sludge extended aeration system proposed
~ produces an effluent of improved quality,over septic tanks.
m
35
~
~
i
UNAVOIDABLE ADVERSE IMPACTS
The material in this section is a brief summary of information developed ~
in considerably greater detall in Appendix A to this EIS. To facilitate cross-referencing for those reviewers wishing more information about a given
subJect area, the present section has been structured to parallel the basic
categorical analysis of Appendix A. Page references to the relevant portions
of Appendix A are provided at the beginning of each section below.
•
Elements of the Physical Environment (see pages 41-110)
1. Earth (see pages 41-47)
Some of the soils within the area of the proposed project will be dis-
placed, disturbed and/or overcovered by the development activities. Approxi- ~
mately 30 percent of the project site will be built upon or paved.
2. Air (see pages47-56)
During the construction phase of the project, dust and particulate emis-
sions from the land clearing and building activities is a potential nuisance ~
problem to the extent not eliminated by the use of dust control measures.
Emissions from automobile traffic are expected to increase somewhat after
completion of the project, particularly on the arterials surrounding the
project si te.
3. Water (see pages 56-103) ~
The possibility that some drainfield effluent or surface water runoff
will reach the water table and carry some contaminants to the aquifer cannot
be ruled out. The extent or magnitude of this possible contamination is un-
known at this time and is the subject of a number of ongoing studies. The ID
project proposes the use of the best availble and reasonable control techno-
logy for the treatment of waste water generated on the project site. The pro-
posed system provides the flexibility to meet future waste water treatment
needs as they arise.
The creation of impervious surfaces over the soil will alter the existing
surface water runoff and absorption characteristics of the project site. ~
4. Flora (see page 104)
Approximately, 160 acres of marginally productive farmland will be taken
out of production
~
5. Fauna (see pages 104-105)
The development of the project site will result in a permanent removal
and disruption of a portion of the wildlife habitat on the project site
This may cause a marginal reduction in the number of species on the site
•
36
•
~
6. Noise (see pages 105-107)
~ During the construction phase of the project some increase in ambient
noise levels is expected as a result of the operation of construction equip-
ment on the site. The completion of the project will result 1n the indirect
increase of ambient noise as a result of the vehicle traffic generated by
the proposed project.
~ 7. Llght and Glare (see pages 107-108 1
IUone.
8. Land Use (see pages 108-109)
~ The proposed project will result in the conversion of about 160 acres
of marginally productive agricultural land into a more intensive residen-
tial use.
9. Natural Resources (see pages 109-110)
~ The constructl,on and development of the project site will result in
the direct and indirect consumption of natural resources in the form of
building materials and energy for space heating and cooling and transporta-
tion. Approximately 160 acres of marginally productive farmland will be
taken out of cultlvation.
~ 10. Risk of Explosion or Haaardous Emission (see pages lln)
None.
Elements of the Human Environment (see pages 111-125)
~ 1. and 2. Population/Housing (see pages 111-112)
To the extent that population and housing growth increases the demand
for public services and facilities it may be perceived as adverse.
3. Economics (see pages 112.113)
~ None.
4. Transportatl on and Ci rcul ati on (see pages 113 *117 )
The proposed project will result in an increase in the traffic volume
~ on the roadway system in the vicinity of the project site.
,5. Public Services (see pages 117-122)
Project related population growth will increase the requirements for
police and fire protection, educational and recreational facilities and road-
way maintenance.
~
~ 37
~
i
The addition of 500 students to the school district enrollment may ~
cause some temporary overcrowding in existing district facilities and would
~ intensify the need for new school facilities within the district. The over- '
crowding would be most serious in the junior and senior high schools.
6. Energy (see pages 122-124) , The project will result in the direct and indirect increase in consump-
tion of energy for space heating and cooling, lighting and transportation.
~
7. Utilities (see pages 124-125)
The proposed project will result in an increase in utility service
requ,irements for the area.
8. Human Health (see page 125) p
N/A
9 Aesthetics (see page 125)
N/A ~
10. Recreatlon (see page 125)
N/A
11. Archaeologi cal/Hi stor,ical (see page 125) ~
N/A
•
~
~
•
38
~
~
CATEGORICAL It1PACT ArIALYSIS
~ LIST OF ELEMENTS OF THE ENVIRONMENT
The following list of the elements of the environment is presented
pursuant to the requirements of tr1AC 197-10-444. "tJ/A" ("not applicable")
appears beside an item when it is obvious that the proposed action will
not significantly affect the area or subarea of the environment in ques-
~ tion. The analysis in this impact statement does not address the environ-
mental categories marked N/A. Ali otiier categories are addressed system-
atically in this appendix and in the body of this EIS. The order of the
discussion is the same as the order of the categories in the checkltst
that follows here.
~ This appendix contains a detailed analysis of each category which is
not marked N/A. The analysis addresses the existing condition of the en-
vironment, the impact of the proposal on the environment, measures proposed
or available to mitigate the adverse impacts ldentified, and the unavoid-
able adverse impacts that will result if the proposed action is taken.
~ ELEMENTS OF ?HE PHYSICAL ENVIRONIIENT
1. Earth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
1.1 Geol o~y . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
102 Soils. . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
1.3 Topogra phy . . . . . . . . . . . . . . . . . . . . . . . . . 44
~ 1.4 Unique physical features . . . . . . . . . . . . . . . . . . N/A
1.5 Erosion. . . . . . . . . . . . . . . . . . . . . . . . . . . 46
1.6 Accretion/avul si on . . . . . . . . . . . . . . . . . . . . . N/A
21. Ai r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
2.1 Ai r qual i ty . . . . . . . . . . . . . . . . . . . . . . . . . 48
2.2 Odor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
~ 2.3 C1 imate . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
3. Water. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
3.1 Surface water movement . . . . . . . . . . . . . . . . . . . N/A
3.2 Runoff/absorpti on . . . . . . . . . . . . . . . . . . . . . . 56
3.3 Fi oods . . . . . . . . . . . . . . e . . . . . . . . . . . . f~/A
3.4 Surface water quanti ty . . . . . . . . . . . . . . . . . . . N/q
~ 3.5 Surface water qual ity. . . . . . . . e . . . . . . . . . . . N/A
3.6 Ground water movement . . . . . . . . . . . . . . . . . . . . 58
3.7 Ground aiater quantYty . . . . . . . . . . . . . . . . . . . . 66
3.8 Ground water qual ity . . . . . . . . . . . . . . . . . . . . 75
3.9 Publ ic water suppl ies . . . . . . . . . . . . . . . . . . . . 97
4. F1 ora . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
~ 4.1 Nu~bers or divers~ty of species . . . . . . . . . . . . . . . 104
4.2 Unique species . . . . . . . . . . . . . . . . . . . . . . . 104
4.3 Barriers and/or corridors . . . . . . . . . . . . . . . . . . 1,04
4.4 Agricu 1 tural crops . . . . . . . . . . . . . . . . . . . . . 104
5. Fauna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
5.1 Numbers or diversity of specIes . . . . . . . . . . . . . . . 104
~ 5.2 Unique species . . . . . . . . . . . . . . . . . . . . . . . 105
5.3 Barriers and/or corridors. . . . . . . . . . . . . . . . . . 105
5.4 Fi sh or wi 1 dl i fe habi tat . . . . . . . . . . . . . . . . . . 105
~ 39
~
6. Noi se . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 05
7. Light and gl are . . . . . . . . . . . . . . . . . . . . . . . . . . 107
8. Land use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
9. P~atural resources . . . . . . . . . . . . . . . . . . . . . . . . . 109 ~
9.1 Rate of use. . . . . . . . . . . . . . . . . . . . . . . . . 109
9.2 Nonreneaiabl e resources . . . . . . . . . . . . . . . . . . . 109
10. Risk of explosion or hazardous emissions . . . . . . . . . . . . . 110
ELEMENTS OF THE HUMAN ENVIROPJMENT
~ 1. Popul ation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
2. Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
3. Economics . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
4. Transportation/ci rcul ati on . . . . . . . . . . . . . . . . . . . . 113
4.1 Vehicular transportation generated . . . . . . . . . . . . . 113
4.2 Parking facilities . . . . . . . . . . . . . . . . . . . . . Pi/A ~
4.3 Transportation systens . . . . . . . . . . . . . . . . . . . 115~
4.4 Movement/circulation of people or goods. . . . . . . . . . . 115
4.5 t~laterborne, rail and air traffTC . . . . . . . . . . . . . . Pl/A
4.6 Traffic hazards . . . . . . . . . . . . . . . . . . . . . . . 117
5. Publ ic servi ces . . . . . . . . . . . . . . . . . . . . . . . . . . 117
5.1 Fi re . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 ~
5.2 Pol ice . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
5o3 School s . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
5.4 Parks or other recreatTOnal facilit~es . . . . . . . . . . . 121
5.5 P9ai ntenance . . . . . . . . . . . . . . . . . . . . . . . . . 122
5.6 Other governmental services. . . . . . . . . . . . . . . . . 122
6. Energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 ~
6.1 Amou n t requ i red . . . . . . . . . . . . . . . . . . . . . . . 123
6.2 Source/avai1 abi1 i ty . . . . . . . . . . . . . . . . . . . . . 123 .
7. Uti 1 i ti es . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 -
7.1 Energy . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
7.2 Conmwnications . . . . . . . . . . . . . . . . . . . . . . . 124
7.3 Water. . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 ~
7.4 Sewer. . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
7.5 Storm water . . . . . . . . . . . . . . . . . . . . . . . . . 125
7.6 Sol id waste. . . . . . . . . . . . . . . . . . . . . . . . . 125
8. Human health {including mental health) . . . . . . . . . . . . . . 125
9. Aestheti cs . . . . . . . . . . . . . . . . a . . . . . . . . . . . 125
10. Recreati on . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
11. Archaeological/historical . . . . . . . . . . . . . . . . . . . . . 125 ~
12. Additional population characteristics . . . . . . . . . . . . . e . tJ/A
•
40
•
e
ELEMENTS OF THE PHYSICAL ENVIRONMENT
~ 1. Earth
.
1.1 Geology
a. Existing Conditions
~ The foundation of the area is formed by formations of igneous and
metamorphic rocks which Ts covered 6y glacial and flood deposits along the
Spokane Va71ey floor. The s rte of the proposed project 1s covered pre-
dominantly by flood deposits (Qf) from the Great Missoula Flood of prehis-
toric tlmes. These deposi°ts consist of boulders, cobbles, and gravel mixed
wi'h sand in places. They are mostly~very, coarse, very poorly sorted and
~ open textured. The marginal parts of the llalley floor contain various pro-
portions of flood transported sand and gravel and reworked Kame and lake
deposits, with Kame deposits (Qks) under7ying the northwest corner of the
s i te. Kame depos its were fornned at the i ce ma rg i n and i ce contact depos i ts
of the Bull Lake Age. These deposits consist of Kame sands anSd Kame delta
sands.
~ Thereare no apparent geologYCa1 hazards within the project area or
site.
b. The Probable Impact of the Proposed Action
The proposed action should not result in unstable earth conditions or
~ in changes in geologic structu res.
c. Measures to Mitigate Adverse Impacts
None.
~ d. Unavoidable Adverse Impacts
None.
1,2 SDilS
p a. Existing Conditions
The primary source of information regarding soils in this area is the
Soil Conservation Service. The Soil Survey for Spokane County may be uti-
lized for much of the soil capability information and land use management
of the area. However, it should be noted that the soils data presented in
~ the Soils Survey represents typical conditions and that detailed engineering
studies are required to determine specific conditions at a particular site.
As shown on the following soil map, the two major soil series on the
project site consist of Springdale (SxB), approximately 60 percent, and
Garrison (GmB) approximately 40 percent. The Springdale series consists
~ of somewhat excessively draTned, coarse textured and moderately coarse
textured, gravelly, cobbly soils. The soils are formed in glacial outwash
~
~ 41
~
~
f
~
3
~ -
I ~
32ND A
~ -
~
~
~
y Existing Portion
/ ~iVhdilome Additian ~
j
~a
f s
~ GmB
a
Gamson very graveily loam, : Q
Z~ 0-8 percent slopes
~ a SxB i ;
Spnngdale gravelly sandy loam,
deep, 0-20 percent slopes '
I I ~
\
~
~
~
~ 40rI'H AVENUE ~
~ ____.r_~.__ , ~i. _ _ - - _ - ~
SOURCE: Soil Conservation Service
~
,
~i
' BO0~S MAP
N-00iETH ~ 11.00IL50,` r%c r200 Feet~
Camu(tsnu ~n ~aronrr~rn~s! ~is{ynr p4.-m ~u~ ccouom~n
~ _ ~-t:~,~ t- ~ ~ - - - , _ - ~ -~-~er• -
• ~
- 42
~
mixed with some volcanic ash, under ponderosa pine and grass. Springdale
gravelly sandy loam, deep, 0 to 20 percent slopes (SxB), is a deep sandy
Q loam soil which has a depth of more than 36 inches to gravel and cobble-
stones. The engineering characteristics of this soil present no apparent
constraints to constructinq roads, foundations, basements, nor are there
any subsurface wastewater disposal lYmitations. The Spokane County Soils
Capabi 1 i ty maps rate the 1imi tations for 6asement, traffi cabi 1 i ty (the
soil's ability to support road beds) and subsurface water disposal as
~ slight. Springdale soils' resistance to erosion range from moderate to low
with a potential soil loss of 5 to 25 tons per acre per year.
The Garrison soil serYes ts made up of sanewhat excessively drained,
gravelly or strong soils that formed under grass, in glacial outwash mixed
in the uoper part of volcanic ash. Garrison very gravelly 1oam, 0 to 8
e percent slopes, has essentYally the same engineering characteristics as
the Springale soil series. As with the Springdale series the limitations
for foundations, trafficability, and subsu rface water dis posal are slight.
The resistance to erosion is moderate wlth soil losses in the range of 5
to 25 tons per acre per year for unprotected sails.
~ The site does not lYe within an area that has been designated as having
either potential for flooding or natural disaster.
b. The Probable Impact of the Proposed Action
The proposed action should result in disruptions, displacements,
~ compaction and/or overcoverYng of the soils in the area designated for de-
velopment. An appreciation of the magnitude of the disruption upon the
soils nay be derived from the site plan. Generally, these impacts will be
in the form of the various construction activities related to the develop-
ment of the proposed project. These activities wTll include grading, trench-
ing, and excavation for roads, underground utility lines, and basements.
Approximately 48 to 50 acres of the site's 160 acres will be disrupted by
~ these activities (30 percent). It is not expected that these soils will
be removed from the site, but will be redistributed on-site as part of
individual lot development. Lesser impacts may result from enhancement of
natural drainage ways and landscaping.
Once the project is totally developed approximately 30 percent of the
~ soils will be covered by asphalt streets, concrete driveways and homes.
The remainder will, most likely, be landscaped in sfirubbery and lawns
according to the taste of the individual home owners.
c, taeasures to Mi ti gate Adverse Impacts
~ Impacts to existing soils conditions should be minimi2ed by containing
earth movement within the road right-of-way corridors, foundation areas,
and other sites requiring reconfiguration of existing soi,ls. Where soils
have been disturbed they should be returned to natural appearance or built
upon or landscaped. Compacting and overcovering of soils should be mini-
mized to the extent possible by utilizing allowable minimum width roadways
~ and providing off-street parking. Cuts and fills will be minimized by
following the natural contours of the land. Within the project some roadway
grades have been increased to minimize cut and fill requirenents. The re-
-
do 43
0
quirement for individual housing plan review by the developer should be
used to avoid unnecessary soils disrupti,on by judicious siting of struc-
tu res .
d. Unavoidable Adverse Impacts ~
Some of the soils within the area of the proposed project will be
displaced, disturbed, compacted and/or overcovered by the development ac-
tivities. This impact may be largely mltTgated through environmentally
, sensitive site planning. The residual lmpacts should not be considered ~
significant.
1.3 Topography
a. Existing Conditions
~
The site of the proposed project rs essentlally flat with a difference ~
in elevation from the approximate high point of 2,034 feet located in the
northeast corner of the site to the approximate law point of 2,008 located
in the southeast corner of the site. The topography of the project is
shown in the following map. Slopes are generally less than five percent
with the exception of the southeast portion ofi the site where a 200- to 300-
foot bank reaches a slope of approximately 16 to 20 percent, then lessens ~
to a slope of less than 8 percento The slope of the site's terrain gen-
erally slants to the southern portion of the site. The slope and drainage
of the site runs generally to the southern portion of the property.
b. The Probable Impact of the Proposed Action
~
No significant alterations in the overall topographic character of the
site are anticipated as a result of the proposed project. Road cuts and
minor excavation actrvity and su6sequent contouring of residual soils will
create some minor localized topographic changes. Some cuts for the on-site
street system will be required, but these wil] be nominal and localized.
The most significant cut will be one that w111 traverse the relatively 4D
steeply sloping bank in the southeast corner of the site. At this point
the terrain rises approxi,mately five feet over a distance of 30 feet (16
percent). However, the prevailing slope over this road section from the
high point to low point over a distance o,f 600 feet is approximately one
percent. Some short term erosion, which will be fu rther discussed in a
following section, may occur as a result of the construction of roads and p
buildings in this portion of the project site. This is expected to be
nomi nal , however.
c. Measures to Mit3gate Adverse Impacts
Terrain contouring and revegetation of those areas impacted as a result ~
of construction activity should mitigate any adverse impacts associated
with the development of the site.
d. Unavoidable Adverse Impacts
None. ~
44
~
~ . . .
~ ,,37Nn A,VENUE
• EacLsting Porhon 03~
~
, 11+rdilome Addiuon
Z025'
~
2025
'
ac .
y ~
3 ~
.
• - ~ •
h
OZO' 2015•
Z -
,
4D • -
~~15
20 ,202o.
2410' 1S'
~ aorrH avEvttE ~
•
SOURCE• C7arence F. Simpson Enguteers, Inc.
//00000
~
N
~
~ #MWoRIM E ,.vaERsa. Mc ~200 Eeet ~
~ Guruult.run iti rrsovoitmRnirl .walfrry pfai.n tj ero inrRirs
~ 45
~
1.4.Unique Physical Features
NIA
~
1.5 Erosion
a. Existing ConditTOns
According to the CriterTa for SoTI Eroslon Hazard of Spokane County
Soils, bath Springdale gravelly sandy loam (SxB) and the Ga rrison very •
gravelly loam (Gm6) are classTfTed as having slight erosion haiard. The
existing site is presently covered in residual vegetation from past farming
activities. This coupled with the fact that the terrain is gently sloping
and the soil is characterized by rapid to very rapid permeability, results
in an existing situation of little erosion potential or problem.
•
b. The Probable Impact of the Proposed Action
The developmental actlvities such as excavation, grading, and lot
contouring will remove the existing vegetative cover from the on-site
soils. This will result in an increase in erosion potential from rainfall
and wind. This potential will be the greatest du rinq the construction ~
phases of the project, and should be almost completely alleviated after the
development has been fully developed and occupied. The potential water
erosion problem wi11 be most significant where cuts are made for streets
and where excavations are made on sloping terrain. However, as previously
mentioned, the on-site slopes are very slight (l to 3 percent) and the soils
a re highly permeable, thus erosion potential is not anticipated to be a ~
significant problem.
c. Measures to Mitigate Adverse Impacts
During the design phase, consideration was given to siope, soil con-
ditions, natural drainage patterns, and natural ground coverings so that ~
their disturbance was minimized. If at all possible, natural vegetation
should not be disturbed, as they presently retard erosion. Road layout and
trenching for water and sewer lines should fo]low natu ral contours as much
as possible. An adequate storm drainage system will collect excess runoff
from impervious su rfaces, thus reducing erosion potential. Du ring the con-
struction phase, mitigating measures such as mulching can be applied to road ~
cuts and fill to reduce direct erosion hazard. Beyond the construction phase,
permanent ground cover should be established on road cut and fill areas and
over subterranean water, sewer and utility lines to stabilize exposed slopes.
Standard dust control techniques should be used during the construction
phase by the contractors to reduce the potential suspended particulate pro- ~
blems caused by earth moving activities.
The establishment of landscaping on individual lots should mitlgate
any long term problems that would be associated with either wind or water
erosion on the project site. The establishment of vegetative cover over
those exposed areas not under ownership of individual lot owners should be
provided by the developer in order to mitigate erosion potential. ~
.
46 ~
~
d. Unavoidable Adverse Impacts
None.
~ 1.6 Accretion/Avulsion
N/A
2. Air
~ 2.1 Air Quality
a. Existing Conditions
, Federal standards have been set for sfx classes of primary air pollu-
tants: sulfur dioxide, car6on r,ronoxide, nitrogen droxide, photochemical
~ oxidants, hydrocarbons, and suspended particulates. The following table
compares the State ambTent air standards to the maximum ambient air concen-
tration measures for such pollutant. The ambient concentrations of sus-
pended particulates and carbon monoxide exceed both Washington State and'
Federal standards in certain areas of Spokane County. 6ecause these two
types of pollutants have different origins and are, to a certain extent,
~ effected differently by meteorological and climatological conditions, they
will be treated in separate sections 6elow.
Suspended Particulates
Suspended particulates consist of any finely divided solid or liquid
~ particles which renain suspended in the atmosphere. Ordinarily suspended
particulates are considered to have diameters of 10 microns (1 micron is
equal to 1/1,000,000 meter) or less which is a size range that does not
have an appreciable settling velocity. This category includes smoke and
dusts of various origins. Particulate pollutants have been shown to in-
crease the incidence of respiratory illness especially in chronic conditions.
~ Certain particulate matter is toxic and a number of substances are carcino-
genic. Particulates can also cause reduction of visibility and result in
excessive soiling of materials exposed to the,atmosphere.
The sources of pa rticulate emissions are numerous and include industrial
point sources, residential space heating, internal fuel combustion, agri-
~ cultural operations, and vehicle traffic over unpaved surfaces. The largest
source of particulates is dust entrained in the air through vehicular traffic
over paved and unpaved surfaces. This accounts for about 40 percent of the
total particulate enissions in the metropolitan Spokane area.
A summary of suspended partlculate concentrations recorded for the per-
~ iod 1973 through 1977 for each of the Spokane area monitoring stat7ons is ,
provided in the following table. Federal ambient air standards require
that the annual geometric mean TSP levels not exceed 75 micrograms per
cubic meter of air.
The Federal seconda ry TSP standard is exceeded over much of the Spokane
~ Valley floor. A portion of the Spokane area has beQn designated as a TSP
non-attainment area, as shown in the following figure. The project site
~ 47
Maximum ~iionitored levels of pollutants (Spokane 1971-1976).
TOTAL SUSPENOED CARGOPl f10NOX1DE SULFUR DIOXIDE PHOTOCNEMICAL NO
P 2
artj cul ates ( g/3 m ) (p~hm) -OXI DANT I,pphmL I,~Im~
~
- Annual , Annual Annual
24 hr. max. Geometric Mean f 1 hr. max. _ 8_hr. max. { 1 hr. max. 24 hr. max Mean 1 hr. max. Mean
Fedc-,1 ,
S ta n ua rd 150 64 35 9 40 ; 10 2 8 100
1911 321a 86C 40C 18C 14a . 8a 3a 6a 70C
1972 321 b 100a 31 C 17C 16a 7 a 2a 10a 88C
& 1 -
1973 403c alb 33d 22e 19a 5a 2a 10a 12+1 c
1974 ~ 324b 89b 54d 36d 23a 6a la 12a 69c
~
1975 274b 99f 31h 23a 13a 5a la 9a 52c'9
1976 453b 149b 38121J Ma 4a la 9d 84C
,
i i .
Source: Spokane County Air Pollution Control Authority
a Gonzaga eSprague and Wall h Division and Buckeye
.
b Zel l erbach f A1 umi num Supply Company ~ Kershaws
.
c City Ilall 90ata for two quarters only ~ Columbia Cycle
d Monroe and Indiana
• • _ _ ~ _ ~ ~
0 9 0 0 0
~
~
SUSPENDED PARTICULATE SUMMARY
~ Station 1973 1974 1975 1976 1977
,
Turnbu1l Wi1 dl i fe Refuge 22.01 21.06 19.06 28 27
Rogers 67.04 55.12 58.81 73 73
~
City Hall 75.22 75.23 58.80 81 83
Gonzaga University 82.35 75.47 64.06 83 79
Zpllerbach 86.12 89.96 79.64 149 131
•
Cheney City Hall 59.41 47.80 73 62
Millwood,City Hall 59.30 59.02 74 77
A1 umi num Supply Company 148.19 99.26 1,43 127
•
University City 97 75
4lashington Water Power 82 70
Cooper Elementary 77 70
~ Sheridan Elementary 122 89
,East Valley High School 63 41
~ Source: Spokane County Air Pollution Control Authority.
•
~ 49
~
is not located within the non-attainment area. During 1976 and 1977 the
State Oepartment of EcoTogy and the Spokane County Air Pollution Control
Authority undertook a joint study to determine the nature and cause of
TSP non-attainment in the Spokane Area. The results of this exhaustive ~
study were that the TSP problem for Spokane is mainly a fugitive dust
problem with dust generated by Spokane's many miles of unpaved roads as
the primary contributor.
Carbon Monoxide
Carbon monoxide is the product of incomplete cambustion of fossil ~
fuels. f1ore than 90 percent of the car6on monoxide is generated by gaso-
line powered motor vehi,cles, with the remai*nder from residential, commer-
cial, and industrial heating and power generating units.
Carbon monoxide is an odorless, colorless gas. It combines with the ~
hemoglobin of the blood and reduces the oxygen-carrying capacity of the
blood. Short term exposures to carbon monoxide have been shown to cause
changes in cardiovascular functionTng and impairment of visual and tlme
interval discrimination. Extended exposure to high levels of carbon
monoxi,de can be fatal. -
Federal ambient air standards require that carbon monoxide levels not 4D
exceed 9 ppm for an eight-hour average more than once per year. This stan-
dard is consistently exceeded within the Spokane Central 6usiness Oistrict
and along North Monroe and North Division streets below the hill. The
Spokane central bus,iness district and portions of the Division and Monroe
Street corridors have been designated at non-attainment areas for carbon
monoxide by the Environmental Protection Agency. The carbon monoxide ~
sampler locations are shown in the map that follows. The following table
summarizes the carpon monox(ide levels in Spokane during 1976 as recorded
by SCAPCA.
The carbon monoxide station located in the Spokane Valley Chamber of
Commerce buildTng is the station closest to the Midilome development. ~
Zarbon monoxide concentrations, in contrast with particulates, tend to
be very locali2ed and dependent to a large extent on local traffic volumes
and congestion. The Chamber of Commerce station is representative of the
traffic and congestion conditions typical of urban arterials. These con-
ditions do not exist in the area surrounding the project site. It is
probable that the CO concentrations near the project site are substantially ~
lower than those observed at the Chamber of Commerce station. A map show-
ing the corridors where CO violations are anticipated follows.
b. The Probable Impact of the Proposed Action
During the construction phase of the proposed project, impacts on air ~
auality may result from five sources: (1) dust and particulate from clearing
and demolition operati)ons; (2) dust from construction operations; (3) hydro-
carbon evaporation from paving operations; (4) construction related traffic
congestion near the site; and (5) pollutant emissions from the operation of
construction equipment.
~
~
50
~
~
1976 CARBON MONOXIDE LEVELS
Tatal Total
~ 1-hour 8-hour 8-hour Violation
Station Maximum Maximum Violations Days
Department of Natural Resources1 22 16 32 21
4D Peyton Building2 24 19 43 35
,Post Office3 34 22 65 51
Columbia Cycle4 35 27 118 66
Division Street5 21 lfi 17 13
~ Oar1 Apartments6 39 17 29 26
Boone Streetl 16 12 5 6
Valley Chamber of Commerce8 12 9 0 0
Boone Street No. 29 31 16 7 7
~ Kershaw's 38 24 137 99
Monroe and Indiana10 25 16 39 27
Trent Avenue11 22 16 12 9
City Hal 1 31 21 57 45
~ lEstablished 7/20/76.
2Special CBD study, established 9/13i76.
~ 3Established 7/19/76.
4Established 7127/76.
SDiscontinued 7/9/76.
~ 6Established 7I23/76. 7
Discontinued 11/7/760
BEstablished 11/22/76.
~ 9Establ i shed 11 i 23/76.
lOpiscontinued 4/11/76.
llpiscontinued 3/25/76.
~
~ 51
Pcano pa
US 305
Nawlhorne RO
/ Country EiomeL~j=Non Attainment
i-
Area
Iti'1% N :
•~~~~~,~~f~~~~~ D10hITOR1NG STATION SlTCS
Plaasant PrJlne Rd
{~~~~r ~
e.00*
~ iiA, ,dl 1.'10// ~ ~ kisi VaUcy Hiah 5cltoul
c
4~i
~46roi Ave ~ Trentwood ~
l Rugers HtjJwSLh()u) i r • i r ; ' ~
/
~~r~~ ii~s ~is~~•~~~~~~~~~~~~~/~t~r~ ~~~~~i~~
K°~
, •.ii s~ii ~~i ~iiiii~.~i.i .iii r~ii
~r~„ Ygr A~llwnod e
~
ii ~ ~iii riii:...~~~ii~iii✓ ~ -/~1 w,o0bii a s~~
/ 14
ael ~
CuoPerSehool
Flnra Itoad
~ . ~ / / ,~'enf A~ , • i
////~,'/.i~
~///!i
GU112agJ
ASC 190
~/1a 8raadY ay Ave
2cllcrbach
fiiiii~~.~ ii~`~i rii~iiiiP ~ ~tii~iii Veradale 1
Sf ~~9ue Avr ~
ii` t ity HaII University lu%
i
. SheridanSchoul 1i/i iiiiiii c
•~,X,//////
, ii///////f//~. : •
w~~',aA1aamu Amandw wr efahi mwO~ ~ u►
t
q ~ ~ Opportuntry
10 i e
n '
.
t~ 29th Ave Glenrose 32nd Ave
37th Avo SITE
H1J~ ~~d
~ N
44th Ave
G , ~ I
s
A1orw1 Pnmnp ONC btILC '
i~
~ NAl1tIklHh iN1~FRIRY !N
lurnuUriu in rnMrdumenid mirlyui pGu~niir~evwq~~ i
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~ j ~ ti 1 , . ~ ! ' ~ ~ 8 Col►a~d~l 0 1
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~ •~~ti~,~ ~r r~ ~ ~ ~ _ 1 ~t+ r ~ ~ ~►r ) ' 1
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1~ ~ ~~N~~ 1 ~ . ` ~ ~ . V I ' ( ' ~14 ~ ~ , ►TNt " y.. r~~ 1~ (
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~r ~ ~1 ~ ♦ ~ 1`t ~ ~ ~ ' 1~~
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~
4 I 1 r . i~~ ~ ~ ~ 1• y ' 1 ~ ~ ~ I ~ ~ ~ I~ ~~i ii
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~
,r..•- ~ ` , ~ ~ q ~ ~ ~ ~ ~ .'kj ' ~ ~ °o M ~
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° ~ 1, ' A _ ~ " ~ ♦ ~ ~ ~ 5 ~ I ~ ~ ~ ~1 , ~ ` ~ ' ~ ' ~
1s1( ~ `
' ~ ~ ti' ~ 1 ✓ ~11 - A ~ ~ ~ 1 A ~ t ~ ~ ~ /1►{,{ " , ,~I ~ ~l~~t t ~ t ~ 1 , 1,, y ~
, t ~ ~ ~ ~ ~ ~ ~ ii ~ ~ y~ ~ 1 ' ~ '
4,
~ 1p ~ 1 r • , ~ • ~ ~M' , Nit1 ~ I 4 ~ ~ , ~ ' ' ~ ~~l'' ~
i u ~ + ~
r t 1~ ~ , ' , `C , ti~ ~ , ~ ~ ~t'`'~ ~
%p r ~~A, , i , Q" r ~
~ ~ t~ ~ , '1~ n 1. ~ ~ ~ • ~ ~
~ ' .
•J~ , ~1 . " l ~
.:1.~'~ , W ~1+ ,~,~r ~ ' 1 ~i ~ ` ;l j`~` ~ wi ~ ~ ~ ,
~w ~ ti ~'t ~ ~ ~ ~ 1 ~ ~ ~ • ~ r t~
1 ~ ~ • ~ •1~ ~ ~ i ~ ~ i 1
~ ~ 1" 1 i S I o ~ ( ~ ~ 1 4
t
° i ' ✓
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~ ~ ~ ~ . ~ ♦
i~~ ~ ~ ► ,i,~~~ ~ a , ~ , A ~ ~t)N S~ ~ ~ ~
4 Ln M~yqtl
AutljnntY
ContYOl -
anL ~punry p~f t~olluttion
,
g~yurce 5ppk
~
Dust from land clearing and construction activities is a potential
on-site nuisance problem. In situations when dust production is likely,
standard dust control measu res such as water sprayinq would be used to
keep particulate emissions to a minimum. These activities are controlled ~
by local air pollution control regulations and will be conducted in accor-
dance with such.
Emissions from general construction related traffic and pavtng opera-
tions may be expected to increase durTng the construction phase of the
project but would be temporary and Ymperceptfble. ~
Completion of the developments should not result in any s,ignificant
air quality impacts. Except for emissions from space heating, fireplaces
and air conditloning systems, tfle development will not be t,he direct source
of any air pollutants. It Ts anticipated that the residential heating sys-
tems will operate with either natural gas or electricity. A11 roads within ~
the development will be paved by the developer.
This residential development while not a direct source of air pollu-
tants, except as noted above, may 6e an indirect source of pollutants in
that it tends to attract vehicular traffic to the area. It is projected
that the Midilome development would resuit in the addition of approximately ~
2,500 vehicle firips to and from the area. This traffic generation is mini-
mal and it is not anticipated that it would result in any perceptible in-
crease in ambient pollutant concentrations.
c. Measures to Mitigate Adverse Impacts
During the construction phase of the project, it is anticipated that ~
any dust or particulate emissions will be controlled by the use of water
sprays or other techniques as required by Spokane County Air Pollution
Control Authority regulations. Automobile traffic related emissions may
be controlled during the construction phase by appropriate detouring when
necessary to prevent construction related traffic congestion or delays. ~
Implementation of Federal automobile emission control standards will
reduce automobile related pollutant emissions after completion of the de-
velopment.
d. Unavoidable Adverse Impacts
~
There do not appear to be any unavoidable adverse impacts as a result
of this project.
2. 2 Odor
a. Existing Conditions ~
As indicated above a package treatment plant was approved for installa-
tion on the initial phase of the project development. 6ecause of the siqnif-
icant delay in receiving approval of the effluent drainfield the treatment
facility has been operated without discharge to the drainfield by storage
of the effluent in holding tanks which is frequently pumped and disposed of ~
54
~
~
~ r
N
~
' ~ ` I ~ • ~ b~ls ~Of ~
t
~ ~(t ~ r ~ Iruilii e u 1 ~.E~
days Per
150 v1alatian
p , sQ Y
s Der year
vloletlon ba~ •
er Yeer
~ ~M N~~ ,rA f ~ ~ p 20 ' an 20 vtolntioe da~5 p
'
less f..-
9 ~1 y y , 1 t ~p
r+ ~«p~~• Il G ~ t 1,. k1~ 1 ~
yW1W~`~1
' ~.:,1'
~ q.
PA
y a ~o ~il ~ j ~ , I ~0 w ° p 1G
,
u 4 p ~ ~ ~ I t f' 4A ~
fift
,
pM
r N r ~ ~ ' t NA ~ t r w! ~
~ ~ ` ~ ~ k ~
7av i' 4~ P ^ ' ~4 K A ~ ~ S°`" Y
► ~ i ~ ' , ` ' ~ ~t * ~"'n+r a l,
J
~f i✓ ' H"'~ ` ' _
Z' A.
M
Or~ ~ ' ~ 1 ~ 1• ; y ~ 1 1b
~ S r I ' d' ' lt .r 1- j ~ ~ ~ ` , \'4~ i
r { , T v y .
i ~ ~ ~ ~ • ~~..~i'~ • ' `
f. 1 n(t1~ ti ~y 9 30 , 1~ ~ a ~ '1
~r ~ '
r1 ~ ~ ' • / ~ ~ ~ ~ `r' a
~ ~ f • „ ~ ~N~~ l~ ~ I~ i ~ 1 ~ u~ ' / ~'Ij'" S ~ ~
v~
~
~ ~ , -L i A; ~ ~ ~
a, ~ ° f t
1 r a
je~~
~ y t ✓ P
0
~
1' Pw++~ ~ ~ ~
~
~ CC) ~
~ti1iU1 A~iti~ar~~Y
~ ut►c~u o
, ~'~autity A~~ ~ ~a11
_
at the City of Spokane sewage treatment plant. The storage of the effluent ~
in holding tanks has been a source of some obnoxlous odor in the past. Ap-
proval has since been received to operate the drainfield and the holding
system is no longer used. Other than this temporary situation, which is
now corrected, there are not any unusual or significant odors generated on
the project site. ~
b. The Probable impact of the Proposed Action
The proposed project is not expected to have any significant effect
on odors generated in the area. During the construction phase of the pro-
ject some temporary and localized odors rnay exlst due to the construction
and paving activity. Tfie project may involve the expansion of the existing •
sewage treatment plant on the project site. Such treatment plants may be
a sou rce of obnoxious odors when not operated or designed properly. (See
the section on waste water treatment facilities below.)
c. Measures to Mitigate Adverse Impacts
•
Proper operation and maintenance of the sewage treatment plant will
minimize the potential for obnoxious odors.
d. Unavoidable Adverse Impacts
To the extent that obnoxious odors from interim waste water treatment ~
facilities can be minimized or eliminated throuqh proper operating and
maintenance practices, there are no unavoidable adverse impacts.
2.3 Climate
The impact of local climatological conditions on air quality is discussed ~
in the Air Quality section above.
3. Water
3.1 Surface Water Movement
~
N/A
3.2 Runoff/A6sorption
a. Existing Conditions
•
The site of the proposed project has no man-made impervious surfaces
that would affect the natural runoff/abso rption process. The site is
characterized by flat terrain with a natu ral terrace along the southern
portion of the site with slopes of 16 to 20 percent. This terrace, however,
is not a significant land feature and comprises a very small portion of the
site terrain. t3oth the Garrison and Springdale soil series are characterized ~
by rapid to very rapid permeability, thus absorption is rapid.
An engineering study was conducted and a su rface water drainage plan
developed for the project site. The drainage plan was designed to meet
the following criteria:
~
1. A system of catch basins and dry wells will 6e installed through-
out the site to control surface water runoff.
56
~
~
2. The drainage system is designed to dispose of all surface water
runoff, in excess of that which would occu r on the site in its
natural condition, within the project site.
~ 3. The drainage systen is designed so that the peak rate of flow
of surface water runoff wTll not exceed the peak rate of flow
from the site as it now exists.
The elements of the surface water draTnage plan are currently being
developed The drainage plan for the project is subject to review and
~ approval by the Spokane County Engineers' Department.
The potential impact of the su6surface disposal of surface water run-
off from the project site Ts dTSCUSSed below in the section on Ground 4later
Qual ity.
~ c. Measures to Mitigate Adverse Impacts
The proper design and maintenance of the surface water disposal system
will mitigate the impact of any changes in surface water runoff character-
istics due to the formation of impervious surfaces over the soil.
~ d. Unavoidable Adverse Impacts
None.
3.3 Floods
~ N/A
3.4 Surface Irlater Quantity
N/A
~ 3.5 Surface Water Qual i ty
N/A
~
~
~
~ 57
r ~
~
~
~
3.6 Ground Water Movement
a Exlsting Conditions
~
The Spokane-Rathdrum aquifer extends from near Spirit Lake and Pend
Oreille Lake in Bonner and Kootenai Counties, Idaho, southwest across the
Rathdrum Prairie and down the Spokane Valley through the City of Spokane,
terminating at the confluence of the Spokane River and the Little Spokane
River. The aquifer is the primary source of drinking water for approximately ~
350,000 people in an area which includes the cities of Spirit Lake, Athol,
Rathdrum, Hayden Lake, Coeur d'Alene and Post Falls, Idaho and Spokane,
Washington. The,recharge zone is that area through which water enters or
could enter into the aquifer. For the Spokane-Rathdrum aquifer the recharge
zone is the land area directly overlying and adjacent to the aquifer as
shown on the following figure. There is an upstream headwaters area draining
into the aquifer recharge zone which contributes approximately 90 percent of ~
the recharge flow to the Spokane-Rathdrum aquifer. This streamflow area
which feeds the aquifer covers an area of about 350 square miles and is
shown in the following figure.
Geo1 oa 1 0
The Spokane Valley-Rathdrum Prairie aquifer is composed predominantly
of Quaternary glaciofluvial deposits which extend from Pend Orellle Lake,
Idaho to north of Spokane, Washington. The deposits consist primarily of
sand and gravel, fine to coarse, and are poorly to moderately sorted, having
, scattered cobbles and boulders. The sand and gravel is relatively free of
fine sand and silt, except in the uppermost three to five feet, where fine •
grained material fill most voids in the sand and gravel. In the Hillyard
trough, near the downstream end of the aquifer, the sediments become pro-
gressively finer toward'the north, where the aquifer is composed predominantly
of stratified sand but includes some gravel and silt and a few boulders.
In most areas, the aquifer overlies the semiconsolidated, fine grained ~
Latah formation of Miocene age. In some a,reas the aquifer has abrupt lateral
contacts with sloping bedrock surfaces, but in other areas, it grades laterally
into less permeable, unconsolidated materials which are not readily distin-
guishable from the aquifer material. In such places, the selected boundaries
of the aquifer recharge area are somewhat arbitrary.
•
The thickness of the aquifer is not well established. The best data
exist where two sgismic surveys have supplemented available drilling data.
The seismic data indicate a total thickness of about 400 feet of uncon-
solidated material near the Idaho-Washington state line. Because the water
table is at a depth of about 120 feet, the saturatedthickness of the aquifer
is about 280 feet In th% Hlllyard trough, a test hole showed 780 feet of ~
unconsolidated materials. A seismic interpretation for the same area desig-
nated about 160 feet of these material as the saturated part of the aquifer
with about 150 feet of unsaturated materials above the aquifer A diagram
of the seismic profiles is shown in the following figure.
In general the only wells that penetrate the entire thickness of the
aquifer do so near its extremeties, in the thinner parts of the aquifer.
~
58 ~
• ~ ~ ~ ~ ~ 99 ~
:
AW S~Mtp..IM
~ i ~
i A4~ud ~aa. no •
/ I
~ l4eas~nl4'rpitkc ;
fNc ~Wc Crur
pE •
/ I
/
Iwwna~nl~na i
k
I
-
o1~a~
Ln gp 4c e `Ve! '
~ ' ~ tl10aW1Y ~ t~ . , •
~ •
1WWWA oE1MWAAI ,
Opiw►lunby I
n '
«y
` uae
a.m nw '
Gknmse
~
SPOYANlIVitflMAIIONAL qq ~ t~ ~ :t r- . 1
~ r
~ Ataan Prairlc .
V d ~I1 /
AQUIFER RkCNARt.k AItF,A
~
5flUlil'F U S.C.S
~ pNF Flllk~ •
~
UNITED STATES OEPARTMENT OF TliE IPfTEAtOFi PrOparoO !tf Caoperatian wHh th• pP$N4iLE REppQT 77 029
Ci£OLOGICAL SURVEV U.S ENVIRONMENTAI PROTECTICN AQENCV piqTE 1
•
BRI?{SN
yLBEqt3
tIILUM9 s
•
IIrt_ 20
rap ~
WGSNINGTfllrt MOh7AW0
1 \ •
~ i•
iDamm
cas.a• 4 ~
uM~i~o - ~ ~
et~rt~ ~
.
e7
PtnO ~
:
Saf~ote°.+o er s~~s Jsi N~ • • ~
n ~1~ ~r00 Qf~ A~ C~ ►
81v'Mr ..n ilO~R ~
le I`'!
~l • o
Is•
t0
OI! • • •
~ r ( r • ~ o ~
r'i om"7
y tvs•
:a I ~ j ~ss • ~
~ i ~ 7 '4 : ~ ♦
r•v a • ' p~ N • ~
3KA11E 20 ~ Z; IS P4 ~
~ 28 0 a~ene ~
1 -aRC au 22 o ~ 21 12 }
: a c 27 13 ~ ~
26 •
25 s. 1 •
.
!a , ~
~ .
,
~
- M 8
$ •s
6 ~ i°~~~6, ~ . •
ti+i s5ouLa
T •
4 ~
~~o..
~ . 3
y re,,
-EMIANATZQN
.
Dzafnaga divide of Spokaae River ' Z ~
J ^ Coeur d'Alene t.ake &ssin '
~
o t
Dsairsaqa 8ivsde oF tha Pend Oreille ' ~ ' •
Lak+e Basin e ~ r r
BuTTE
•22 SurEaee-water daw colleccion site
an3 nurnber
~ spokans valleyRethdrum Pralrie ~
aqnifer ~o ta 20 30 40 so BowILEs
f980 Irom . 7 000100 al 6y rr
~ ottf/4Gf 0~91 JO at ZCO111 $1 D
o uns a ~ ~ Eo~ ~~sQ~ •
, 1 1 B00 009
PL.ATE 1-- Map -;howing the pares ot the Spokane River besin and
the Pend Oreille River basin Waghington Idaho and Montana
which are recharge areag for che Spokane 4alle3, Rathdrum
Prairie aqui[er
~
60 •
. ~
• - 4
A
~
~
~
.
THICICNESS AND SEISMIC PROFII.E OF o
T'H.E SPOKANE-RATHDRiJN1 PRAIRIE ~
• ■
•
•
Spint Lake
e Ba< <1ew
•
•
0
8 ~ Athol
~ WASHINGTON ~ IDAHO
■
•
■
.
0
•
■
0
■
•
~ ■
0 C11C0
■
•
■
•
•
•
•
• Hauser
~ Newman Lake ~ I.ake ~ Rathdrum
Havd:n Lake
Past
HiliyF+rd ProQle Falls '
...•~`G ~
~ M
Coeur d'Alene
Spokane 0
ValleY - 0 stace tiae Protite
; pokane ; •
~ ~ ■
't«. .1~„~.-•a LakB ~
~ Moran Praine ~ Coew d' A1ene
■ La.ke
•
■
•
HILLYARD TROUGH
SfATE LI~fE SEIS~HIC PROFiLE 0 e SEISA1iC PROFILE
~ Ylm tIo
o a t I_
zl=
2000 J ~a
° - Water Table
> -
a 1800- GWc1a1 & Glaciat 1 Water TaDle cLa
~ 1600- • ' 4" ~ _ _ F1uvlat oeposits • ~
ar . .
~ o ~
o ~ 1400 - Latrih Formation _ - - - - - - - - - - - ~ -
> m 1200 t
W` a Iranfte RocOs Granite Rock
iooo t
- ~
800 -1 r i i ~ ~ • • ~ ~ . ~ , ~ ~ ~
Q
~ $ o o
r4
25 mo ~o Q
Olstance tn teet from indiwted relerence
SOURCE Esvett & Saxon, Consulttug Engineeta
~
• ~ H4AIi{7H L iX1lkRStr% 1v1
(.vntults- 13 nrnrt nmrat-t! Lnn..clym rJ.u> >t q rN wnit+
61
~
Wells drilled away from the margins generally penetrate only 50 feet or
less below the water table.
~
The project site is located near the margin of the aquifer in the area
south of Opportunity. In the area the ground water is thinner :han in the
main body of the aquifer to the north.
Hydraulfc Characteristics 4
•
The transmissivity of the aquifer (the rate at which water will flow
through a unit width of the aquifer under a unit hydraulic gradient) is gen-
erally high. Values calculated by the U.S. Geological Survey for designated
parts of the aquifer are shown on the following figure. Transmissivities
calculated by the U.S.G.S. range from .13 million ft2 per day in the western
end of the aquifer to about 3.4 million ft2 per day near the Washington-Idaho •
state line.
The transmissivity of the aquifer at a certain point is a function of
the depth or thickness of the aquifer at that point. As discussed in the
previous section the project site is located on the southern margin af the
aquifer where the aquifer is thinner. This would result generally in a lower •
transmissivity of the aquifer in the vicinity of the project site than in the
main body of the aquifer to the north. The finer grained soils which under-
lay the project site would also tend to reduce the transmissivity of the
aquifer at this point. A lower transmissivity of the aquifer in the vicinity
of the project site would result in a lower flow rate per unit width of the
aquifer and probably less mixing action than occurs in the main body of the ~
aquifer to the north.
Calculated values of ground water velocities are relatively high. U.S.G.S.
calculations for the aquifer at the state line indicated a velocity of about
64 feet per day. In an earlier study conducted by the U.S. Army Corps of
Englneers a different set of estimated aquifer characteristics ry2sulted in a ~
calculated velocity of about 90 feet per day at the state 1ine. For the
Hillyard trough the U.S.G.S. calculated average velocity is about 47 feet per
day. In the Corps of Engineers study, the velocity was calculated to be 41
feet per day. These values are relatively high `or a ground water system and
indicate that the aquifer is a very dynamic system and not a relatively stable
pool of water. ~
The lower transmissivity and fine grained soils which characteriZe the
aquifer near the project site would tend to result in lower ground water
velocities than are found in the main body of the aquifer to the north of the
project site.
The U.S.G.S. has calculated the rate of ground water flow in the aquifer `
to be 960 and 350 cuVc feet per second at the state line and in the Hillyard
trough, respectively. Similar rates calculated in the U.S Army Corp~ of
Engineers Study were 1,000 and 200 cubic feet per second, respectively.
tdater Level s •
The water table in the aquifer slopes from the Hoodoo Valley and Lake
Pend Oreille, Idaho to the Dartford area north of Spokane, Washington. The
62 .
• ~ ~ ~ ~ ~ ~ ~ • ~ ~
Mwd ~aM aa
, o•13k t0o r s ` LLGENU
us 390 ►uwtnn o Ru TrouuulrJdiy IAI ruuyl
( qulllry I1C5 Arcrnue rolne Wt dnlgailu! paN nf
$~cn pi;lC Fi IAowuiNr Nlculote0bycumyWa
ve ~Ide i'rc~de / a u x 1ob ~""'dd ae'ipw or J v rocr, us
C-0014cal bunoy, 6ued un cvleoutcd
OuW nta apA w2teMC61n yodl¢nts.
i~
49 ~
i • ~IMWIt PI41110 (itl
fa0 ~ ~ ~yrancisAw ~yM~uVr
H a ~ ~n
~ ~ w a ~
'y ¢ ¢ eI 1 s w Iou,yAw ~s oTt V4104,
N a c ~ , a /
0
~KA~tltl
hhllaund
~Y~ «o++ti R~
Parkwnter '
~o
b! 2.
T~oni nwr ~ QI~ f ~ ~ ,
a•~ Q~
~ . ~ ~ ~ IfJU
~ lir tlwW Aro
O ~
idult
, 9ursan a a ~ 5 nus Aro , .
a a ~ °
= j
0 ) y S ~
B f N
I441.1\I IVI!lLN.tfIfINAI (1~1pp (11111t) 1 'r
11H1'Ukl
39111 A►0 \Illn(Q'~l J AV! '
51TE
~ 7/lh Artl
~"I0 n Avo
EL AQUIFCR 1'RANSAfISSIVITY pISTR1UUTI0N
I
r
A&A
aqutfer is at a maximum elevation of about 2,180 feet in northern Idaho and
declines to about 1,540 feet in the area north of Spokane. The water table ~
in the northernmost part of the aquifer slopes about 20 feet per mile of length,
wh,ile the major portion of the aquifer from northern Idaho to the southern
edge of the Hillyard trough slopes relatively gently, from two to 10 feet per
mile. The average annual elevation of the water table is shown in the f>>gure
above
~
The water table contoursshown on the above referenced figure reflect
the estimated annual average elevation The water table at a particular loca-
tion will vary seasonally with surface water runoff, precipitation and other
climatic factors 6Jater level fluctuations are generally less than 15 feet
during a year in most areas. Generally the greatest annual fluctuations occur
in those wells nearest to the Spokane River, in response to changing stages ~
of the river. Water level fluctuations from a well located in the viclnity
of the project site are shown on the following hydrograph
The depth to the water table is the greatest in northern Idaho, about
300 to 400 feet below the land surface, and becomes gradually shallower
downstream, reaching depths of about 120 feet at the Washington-Idaho state ~
line and about 40 feet near Spokane. Continuing downstream the depth to the
water table lncreases to aboijt 150 feet in the Hillyard trough.8 In the
vicinity of the project site the dept~ to the water table ranges from about
70 to 90 feet bel ow the 1 and surface.
b The Probable Impact of the Proposed Action ~
The project site is located near the margin of the aquifer south of
Opportunity, where the transmissivity and flow of the aquifer are lower than
in the main body of the aquifer to the north. llhile it is not anticipated
that the proposed project will have any perceptible impact on the geology or
hydrology of the aquifer, the existing hydrology of the aqulfer near the pro- ~
ject,site will have a bearing on the potential for water quality degradation
from project related effluents.
c. Measures to P1itlgate Adverse Impacts
None. 4D
d. Unavoidable Adverse Impacts
None.
~
~
64 ~
~
tlater Level F1 uctuati ons 'i n tlel l 25/44-2301, 1931-71
80
~ 85 -
~90 - ltj
95 - ~
100 1931 1932 1933 1934 1935 1936 1937 1938 1939
~ 75
80 -
~ 85 -
gp '
~
~ N 95 = -
Q 4 +4 w 1
Z 100 1940 1941 1942 1943 1944 1945 1946 1947 1948
a
~ 75
HO - ~ "
m 85 ~ . ,
W 90 ' -
~
Z 95
W 100 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958
~
a 75 '
o gp _
85
a
0 90 -
95 - -
40 100 1959 1960,1961`1962 1963 1964 1965 1966 1961 1968 75 , - '
80-1
85 -
.
90 `
95 - "
100i 1969 1970 1971 1972 1973 1974 1915 1976 1977
~ Well number 25/44-2301,
Depth 97 ft,
Water,use Irngation
~ 65
~
3 7 Ground Water Quantity ~
a. Existing Conditions
Water Flow
The U.S.G.S. has calculated the rate of ground water fiow in the aqui- ~
fer to be 960 and 350 cubic feet per second at the state line and in the
Hillyard trough, respectively. Similar rates calculated in the U S. Army
Corps of Engineers Study were 1,000 and 200 cubic feet per second, respective-
ly.
Recharge to and Di schar_qe from the Aqui fer l 0 ~
The aquifer is recharged by percolation of surface water runoff and
underflow from adjacent highlands, by percolation of precipitation, by
seepage from the Spokane River, by seepage from lakes which lie adjacent
to the aquifer, and by percolation of irrigation water diverted from sur-
face water sources. The following figure and table show the lo_cations and ~
rate of recharge to and discharge from the aquifer as estiq~ted by the
U.S.G.S using the results from a number of prior studies.
In the highlands and hills which lie adjacent to the aquifer, precipi-
tation produces small streams which lose most of their water to infiltration
as they flow only short distances across the land alrea above the aquifer.
Some surface recharge probably occurs in the area south of the project site •
at the sink area where Plouf Creek disappears. Coeur d'Alene, Pend Oreille,
Spirit, Twin, Hayden, Hauser, Newman and Liberty Lakes are all adjacent to
the aquifer. Part of the water that flows into these lakes is evapor-
transpired, diverted, increases storage or becomes surface outflow, and part
percolates into the ground and recharges the aquifer. The average inflow to
the aquifer from these adjoining areas totals about 1,010 cubic feet per ~
second, with about 800 cubic feet per second in Idaho and about 210 cubic
feet per second in Washington. Direct recharge from precipitation has been
calculated to be 130 cfs for ldaho and 50 cfs for Washington. These
amounts represent that part of the precipitation which is not lost as surface
runoff or as evapotranspiration and is therefore available for recharge to
the aquifer. The aquifer receives an average of about 80 cfs from the ~
Spokane River between Post Falls, Idaho and Greenacres, Washington. Addi-
tional recharge comes from the Spokane River near Post Falls, Idaho where
about 100 cfs is diverted from the river and used for irrigation. It is
estimated that about one-half of this amount recharges the aquifer. The
above estima'tes give a total of about 1,320 cfs.
~
The aquifer loses water to the Spokane and Little Spokane Rivers at an
average rate of about 1,090 cfs. An additional ground water outflow of
about 55 cfs occurs at the downstream endof the aquifer near Nine Mile
Falls, Washin`gton Water use accounts for most of the remainder of ground
water discharge. 'Approximately 62 cfs of water in Washington and 2 cfs of
water in Idaho are pumped from the aquifer and eventually discharged to the ~
Spokane River through municipal sewer systems In addition, large quantities
66 ~
e
(.IUUUdwnllrl ~
~ LCiEND ,
Qwlluw
y ~ iS - IUII ~ ~ ~
Atl euntlan lr<uE{c kat ycr m+ud
Iloo lolu ~r Ppmi dJdd+y ucr ,
•
podqp1u11pWWla
Nb eoasw nu► a
~ S ► ` - otreEmr fAm ttw wqmtn ' •
w►wa r tpYfuRMNml-fmrcrAnplnHl ~
IncAldc . ~*IB M,MNa / unw~+uwuq~n~eebpu►.m~oe ~
` - ILI[k7la~lqns Ahw i
` AjWs Pmirtc Wc-,out PreGie
i 1 w■wamna ' ~
~ +Z a Alqe "e I Ta1a1 PumpingLaz ♦6S
~ in wasfdngtnn
1:0 LL +s -124
z a
f~ JI q I
Ih10tW11 I vWwqW44 rao_ • ~
~
~a 4_r A
/111C~1Aq
*11 ~
` h +4
't"n u I~ -y~ 4 Trrntwuod ~
~ ~kiqfleo L ♦ RO Ods Onhards
V +2 230 Sp V ~ .
a.
r '
' •
'A ~ UjnWwilAq +16
~31 imun
~n
+Z
~ QPpwtuniry ~
+I S 4'q A o~ Veaul~lc +24 ~
I ~ a°
° U y
823 nn~ I Rcclpdlaiiun unaa,. `s lal~o
smka~i iu►wn~ttnre~ I Ntinus Sl'.
~ AINVUAi ~ a 1 EYaputamptmllnn
+50 AtDlllll (lfJftiQ
~ ~e A1
AQUtFCfl DISCIIAl1GtrRLCIIARG16 RAfFS
9 n ~ ~
~ 194
~
a M..Jwn ~ w~VMd wt l~/~+'f ,1' SC'yn`t V I.LN
I y
~
ESTIMATED AVERAGE RATES OF
RECHARGE TO AND DISCNARGE FROM
THE AQUIFER
~
Cubic Feet Per Second
Subtotal Total
RECHARGE
Flow into aquifer from adjoining areas +1,010 ~
Idaho +800
Washington +210
Preclpitation minus evapotranspiration
on the land surface above the aquifer + 180
Idaho +,130
Washington + 50 •
Seepage from Spokane River between Post Fa11s,
Idaho, and Greenacres, Washington + 80
Inflow from surface-water diversion
(recharge by water diverted from Spokane R1ver
east of Post Falls, Idaho, and applied to land
surface above aquifer) + 50 ~
TOTAL RECHARGE +1,9320
DISCHARGE
~
Seepage to Spokane River - 780
Greenacres to Trent, Washington -330
Trent to Spokane, Washington -230
Spokane to Seven Mi1e Bridge, Washington -120
Seven-Mi1e Bridge to Nine-Mi1e Bridge,
lJashi ngton -100 ~
Seepage to Little Spokane River between Dartford and about 3 miles above its mouth - 310
Total pumping loss in Washington - 127
Ground water pumped from aquifer and
discharged to Spokane River and Peone Creek - 62
Consumptive use of ground water (water OD
pumped from aquifer and removed by
evapotranspiration - 65
Total pumping loss in Idaho - 48
Ground water pumped from aquifer and,
discharged to Spokane River - 2
Consumptive use of ground water (water pumped ~
from aquifer and removed by evapotranspiration) - 46
Ground water outflow below Nine-Mile Falls - 55
TOTAL DISCHARGE -19320
CHANGE IN STORAGE p ~
Source: United States 6eological Survey (1978),.
68
~
~
of water are pumped from the aquifer and applied as irrigation water on the
land surface or are discharged to sQbsurface Osposal systems, after domestic
~ or industrial use, where potentially part of the water returns, by infiltra-
tion, to the aquifer.
Irrigation use of ground water averages about 31 cfs in Washington and
61 cfs in Idaho. Assuming a consumptive-use factor of 0.67, a total of 21
cfs inWashi ngton and 41 cfs i n Idaho are 1 ost from the aqui fer. 4later
~ pumped from the aquifer and discharged to cesspools or drain fields, or used
for domestic irrigation, averages about 74 cfs in Washington and 9 cfs in
Idaho. Using a consumptive use factor of 0.59, as calculated by Todd (U.S.
Army Corps of Engineers, 1976), total loss from the aquifer is about 44 cfs
in Washington and 5 cfs in Idaho These various pumping losses total 127
cfs in Washington and 48 cfs in Idaho, for a total pumping loss of 175 cfs.
~ The above estimates give an average rate of discharge of about 1,320 cfs.
This 1s equal to the estimated average recharge rate. Because no long-term
change in storage within the aquifer has been observed within the past 50 years,
based on water table fluctuatlons,it is assumed that a state of near equilibrium
exists in the aquifer.
~ Potenti at Recharge, from Sewaqe Di sposal §ystem Orainfi el ds
As discussed above, based on U.S.G.S. estimates 74 cfs in Washington and
9 cfs in Idaho is pumped from the aquifer and used for sewage disposal in
drainfields or for domestic irrigation. Using a consumptive use factor of .59
~ as calculated by Todd in the U.S. Army Corps of Engineers study, a total of 30
cfs in Washin9ton and 4 cfs in Idaho would be available for recharge to the
aquifer. Of the 30 cfs in Washington, about two-thirds or 20 cfs is the re ~Z t
of domestic irrigation, leaving about 10 cfs the result of sewage disposat.
If all of the above where to in fact recharge the aquifer it would constitute
approximately three percent of the total volume of water which recharges the
~ aqui fer.
The literature to date continues to show a conflict over the probability
of drainfields as an aquifer recharge source. A test drilling program was
conducted by J. W. Crosby of Washington State University from 1967 through
1970, to evaluate ground water and pollutant movement from various sources in
~ the Spokane Valley. 13 He found the soil to have a low natural moisture con-
tent coupled with apparent high moisture tensions. These results led him to
suggest that soil moisture was not ncoving downwardito the ground water table.
In the final report of the results of the drilling program, Crosby states as a
conclusion of the study: 14
Further study of the moisture conditions in the Spokane outwash
~ gravels has strengthened the earlier conclusion (Crosby, et a]
1968) that these deposits are generally in a highly stressed
moisture condition. Ground water recharge cannot be demonstrated
as occurring in response to precipitation. Instead, it is sug-
gested that recharge is associated primarily with marginal streams
that discharge onto the outwash plain maintaining saturated condi-
~ tions in the gravels for extended periods of time. Precipitation is stored in the upper strata and apparently removed during the
growing seasons. Dominant moisture movement is probably in response
to capillary and thermal gradients.
~ 69
~
Further on in his conclustions Crosby states.
These writers postulate that drainfield waters may in the early ~
stages of field use percolate to depth However, as organic
matters are formed as described by McMichael and McKee (1966),
Buter, et. al. (1954) and Calwell (1938) further deep perco-
lation is arrested and moisture movement is predominantly
lateral in response to capillary forces. The initial moisture ~
at depth is rapidly dissipated as equilibrium is reestablished
with the surrounding media.
The investigations of Crosby,et. al., have been criticized on the basis
that the samples from the drilling program were only taken during the summer
months when the rate of moisture removal by evapotranspiration would be the ~
highest. In addition the Crosby studies reported no significant salt build-
up in the soil beneath drainfields, which could suggest that at some time of
the year any salt accumulations are flushed downward.15 Crosby attributes
the low soil nitrate levels to denitrification at depth. The moisture
deficit in the soil with a lack of salt buildup appears to be contradictory
regarding the ultimate fate of the drainfield effluent.
•
In 1976, a report on the water resources of the metropolitan Spokane
region was completed by the U.S. Army Corps of Engineers 16 This study in-
cluded an analytlcal investigation by Todd of the drainfield percolation
mechanism to determine if this effluent could be reaching the ground water.
The purpose of the investigation was to determine from calculations of the
evapotranspiration mechanism whether moisture is available for percolation •
under suburban development conditions after evapotranspiration needs are
satisfled. Todd came to the following conclusion based on the results of
the study•
An analysis of the evapotranspiration mechanism for urban and
suburban land use conditions in the Spokane Valley indicates ~
that a significant proportion of the leachate from septic tank
drainfields, is available for percolation to the water table of
the ground water. The analysis of soil moisture behavior is
based on a conservative interpretation of data and a conserva-
tive application of soil moisture transport technology. Not-
withstanding the conservative approach, the analytical results 0
indicate a net surplus of leachate available for percolation to
groundwater.
A monthly water balance for the Spokane Valley under generalized suburban
conditions (assuming an overall gross density of three residential units
per acre) developed for the above study is included in the following table. ~
This water balance indicates that surplus water over and above potential
evapotranspiration is available from November through April. The total
average annual surplus was estimated to be 14 22 inches, and constitutes
41 percent of the total precipitation plus drainfield effluent
The preliminary results of the ongoing "208" Glater Quality Management ~
program for the Spokane-Rathdrum Aquifer, being conducted by Spokane County
70
•
MONTHLY WATER BALANCE DATA FOR SPOKANE VALLEY UfUDER GEPfERAlIZEO SUBURaAN CONDITIONS
J F M A M J J A S 0 N D YR.
Precipitation 3.15 2.04 1.70 1.10 1.83 1.44 .52 ,65 ,91 1.74 2,40 2,52 20.00
Septic Tank
Effluent, in, 1.19 1.19 1.19 1.19 1.19 1.19 1.19 1.19 1.19 1,19 1.19 1.19 14:28
Potential
Evapotranspira-
tion, in. 0 0 0.61 1.71 3.14 4.38 5.61 4.76 3,15 1,67 0,46 0 25.51
Actual Evapo-
transpirati on,
in. 0 0 0.61 1.71 3.14 4.10 3.55 2,85 2,26 1.67 0 46 0 20.35
Moisture
Deficit, in. 0 0 0 0 0 0 0.28 2.06 1.93 0.89 0 0 5.16
V
J
Soil Moisture -
Storage, in 5 00 5.00 5.00 5.00 4.88 3.41 1.55 0.85 0,69 1.95 5.00 5,00 -
Snow Pack
Moisture
Storage, in. 3 15 0 0 0 0 0 0 0 0 0 0 0 3,15
Total
Percolation,
in 4.34, 3.23 2.28 0.58 0 0 0 0 0 0 0.08 3.11 14.22
~
u.~
Source: U.S. Army Corps of Engineers Study
~
in cooperation with the U.S.G.S., U S Environmental Protection Agency and ~
the lJashington State Department of Ecology, have not provided any defini- ~
tive conclusions to date regarding potential,recharge of the aquifer by drain-
fie1d effluents. Preliminary ground water quality data from the Spokane
County "208" Study and the U.S.G.S. are conflicting as to the possibility of
sewage treatment systems effluent as &source of ground water recharge, and
are discussed in more detail in the section on ground water quality below
Because of the very small quantity of total sewage system effluent compared 4D
to the total aquifer flow rate it is likely that effects on the chemical
quality of the ground water would be difficult to identify. Todd used data
indicating an increase in total dissolved solids as the ground water flows
westward under the areas served by septic tanks as confirmation of his cal-
culations showing recharge as probable The preliminary data from the Spokane
County "208" Study and the U.S.G.S. does show a slight increase in salt con- ~
tent of the,ground water as it passes under the Spokane Valley. However, a
much larger increase in sa1t content appears to occur as the aquifer passes
under the City of Spokane and the area to the north. Crosby has suggested
that the increase in nitrate and chloride levels as the aquifer flows westerly
is due t~ "natural hydrogeological processes and not to seepage from septic
tanks".
~
Preliminary data also indicates that some areas near the margin of the
aquifer have higher salt concentratiorts than does the main body of the aquifer
Because of the lower flow rates and lack of mixing near the margin the effect
of surface recharge on ground water quality may be more easily identified.
The higher salt concentrations near the margin may be the result of surface ~
runoff from the adjoining hills or surface recharge from the area above the
aquifer
Water Use
Estimated volumes of water pumped from the aquifer in 1976 by public
water supply for domestic, irrigation and industrial purposes are shown on ~
the following figure. These es~t~ima~tes are derived from the U S.G.S summary
of data from previous studies.
Public tirater supply systems pumped a total of about 30 billion gallons
(128 cfs) of water from the aquifer in 1976 for domestic use. The major
part of the water (about 27.5 billion gallons) was pumped in Washington. All ~
publicly supplied water used for domestic purposes by the population over-
lying the aquifer was obtained from the aquifer, except for a very small por-
tion (less than one percent of the total domestic use) which was obtained
from Hayden Lake, Idaho We11s are presently being constructed which wi11
replace this surface water supply with additional withdrawals from the aquifer.
The major public water supply systems are 1lsted in the attached table. ~
An additional 22 billion gallons (92 cfs) of water was pumped from
the aquifer in 1976 for irrigation and almost five billion gallons (19
cfs) for industrial uses Diverted from the Spokane River in 1976 were
about 24 billion gallons (100 cfs) for irrigation (near Post Falls, Idaho)
and 10 billion gallons (42 cfs) for industrial use (Kaiser-Trentwood ~
cooling processes) Virtually all the water diverted by Kaiser-Trentwood
is returned directly to the river
72 ~
~
Su--nscy of guDlic wacar-oupply aysecos obsninieg water from sha eqyLter
Matcer Qaalicy
I.rcotlon 1lpprox- Jlppswc- 64v- j ?reseat
• of lasto lmete bs Chemlesl eta~acQ• veter
Flema of wtee syateml we11a papu• we.as uae ot Standsrds NunsLot teeac-
lottor fn 1976 aasyle■ exceeded ot ment
sesved Imtll.icna ceated7 tinea
ir 1976 oY exce+ssd
sallo=►el
C,ry ot spokaae 25/42-3 leo aa0 19 8Ca )s uaa 1 Cliloct-
25/43-4 8 il nsuan
26/43-31
, lladern Sleetsie treter Cocrperty 25/44-8.15,16. 24,200 1 760 Sl Isnn 6
17 21,22, 27 1oce9aaese I None
Diosolved solidi 1
clcI ot COWAr d• Alocea S1/3-1,3.12 21,000 1 400 Cttlori-
ytlon
tifnfcxarsh later Discriae 02 26/03-7 19.20, 14,000 479 13 isan 1 Nons
30
Fairchaid Air Poreo L+uoa 25/42-i1 11.000 727 61 2san 1 QRlori-
trtloe
vera trnqaclon Diecraes 1115 25/48-17.15.22 17 COa 549 37 Zron t
• 23 26 Eiitnce 2 None
Waehic►s)ta=f Macer Pawur 02 25/40-20 27,28, 7.440 490 20 Zsan 1
29 Cappoc 1 Cl+loH-
Lead 1 notlon
traahi+sgtarf 1bcor Pcar.cr 01 24/43-13,23 4,800 343 i0 Iran S CAlcri-
25/00-7.18 Photfols 1 eattoe
Niadol Lsraqation Daocziet w18 24140-21. 28 4.600 82 5 Irot► 1 None
City o[ Cunt Po118 SO/S-1 4.S00 431 gane
MashYtsgw~ aiecer P.Afar 03A 26l43-18 30.30 0, SCO 273 9 Iran 1 Chlerl-
netion
OccAard Avornca IrraSscrar► otucesct :5/43-12 4,500 102 24 lDnganesa 2
• *E .11e44.7 PAcnolo 1 None
cacnhape 3rriga uaa L,/acrics 47 25/47-23 4,200 206 1 Gonr Q None
Trencraod lrrigation Oiets.c: 07 25/34-2,3 3 600 427 8 Srao 1 None
2fil44-7S
NoctR Spokoeso Irtigatlon Dia[rlct 26/47-27,28 :.OCO 174 4 Hane 0 HO=tc
48
F.iot Spo6aao Itoees DietricL M1 25/43-24 2 800 16l 72 Tsart S Uone
Cansolidaeed IrreqaeLon ulosriet 25/45-17 2 700 133 2 tiorse 0 Bono
N19 IGeeaaesecvo►
1dael+Yrgton %ater Povns 033 2&/43-8 10 2.400 202 6 Icon 1
KDf1qiRQ00 1 llDffO
• Aoa• Poiae J►n~iataon 31/5-lS 96 2,200 150 8ano
Iiuecbsaeon Zrtigocaen Dietract *16 25ld4+18 1.000 lel 3 btone 0 gona
Coeuotidsced frr.gaelan Diaeslet 25/45-1B 2.000 100 19 Irea 1 ltane
019 (CosZ*rn)
tac►adano Patk Srriqstion Dioeract 25/44-S 6 2 000 32 2 goau O lione
017
Isvaa Wc.et Dintaict sb 15/44-4 9 1 80D 406 S None A Nano
'Cavn o! !t►l lvaoa 15044-5, 7,8 1.600 36 i Haa~ ~ smw
Cona-aladaced Isr'gatiai biacricc 26/16-31 1,SQ0 72 18 Lson Z
r1.9 (east Parar1 lonqanesa 1 Deono
~ ConnalaQaced Ierf.gacac.a u►rcrict 23044-2 1 300 65 = 8oea O dam
v19 (Otas Os+chsrda)
C3ty of Aschdaum 52/4-31 1.000 i61 sieraeo 2 Nono
Diess Y11lo eatotos 59/4-6 1 OQO 60 Von@
09ahmra WDtes Cafmpeay I5/01-19 1.000 24 3 Ho" 0 None
Canaalidated irsayet_mn Otocrlec 25/45-7 870 43 2 Iron 1 aene
ply lWwae Psrm)
@ici ot Gpirft Lutct- 53/4-6 700 50 « ~~a
Es,c ac.anscre. slls-xe 600 39 None
Houoar Lako S1/5-19 600 40 None
Castu" ld660il I!llgatfan uiulcla.t 25/04-11 S10 25 2 Hoae O None
• ely Qcarderl
City Of HtTwl S3/3•9 339 SO Nam
HafSrvo ttster ~ 50/4-1 300 20 gone
Hairavn Pi"e SI,/4-33 2` lS « llone
Lr&+ ny f.oi«u UtsisciCi Cb 25/15-14 la 240 17 17 ftca 2 moAo
Fane Viov BsWUa S1/4•12 300 il - None
usn-a Tsailar Ca"'t Sl/4-23 150 10 NoQe
lr,tb iszigalian Oiaerict 020 36/45-25 140 7 4 Iron 1 tlanm
OanTansle !lnbile Bautos S2/4-22 115 8 6Tane
Mwflcain vle.. ss/als 125 9 « « tzom
• 9un his lbbllt 91/4-11 100 7 M ~ ~ Ron-
:aantry Liaitu~ 52/1-I: 100 7 Mana
it..~se tes Sa/4-1 100 7 » `tong
4iville Waser Cos9oraeiaa 26/43-6 97 6 4 Roas 0 ttorL"
ttaverd xata! 52/0-S 50 1 Narte
Bunco Paad Mstet 53/2-17 40 2 - tqcme
Plensnne Dsaltle Mter Ccapaay 26141-32 33 S 2 MitralQ 1 None
Plaetroft MAblla Fto,5o Park 25/40-9 Chlorl-
naCaon
Hiddan Village Estates 52/4-12 ~ - None
ifppor 4via Gekea 53/5•36 » Nane
• '--r-old Eetetea S1/4-12 Subdtvietan rtat yat oaapleced 'qcmr
zernvella tocporatian 41/e-21 Svl~divi~iaa eot yet eoapleeeQ •tono
! J► !av additsnlwl s..il eyeceme proDaDly axio* thet ete not tnrluQed an Che taefe dato
2 Dets rtat avstlable [os Idehp
3 Cnemieal aWenlor+d• are expleinad an plate 10
~
73
~
b. The Probable Impact of the Proposed Action ~
Assuming an annual use of 35,000 cubic feet per residential unit, the
proposed project would result in the withdrawal of about 14.9 miilion cubic
feet (.5 cfs) of water annually from the aquifer for domestic, sewage disposal
and irrigation purposes. Of this total approximately 6.2 million cubic feet
per year (.2 cfs) would be used for sewage disposal and ultimately discharged ~
to a drainfield above the aquifer. The later total was derived assuming 3 2
,persons per residential unit at a consumption rate of 300 gallons per day per
residential unit for sewage disposal.
The anticipated water consumption by this project represents a very
small percentage of the total flow from the aquifer and poses no threat to
existing supplies. The present ground water flow is capable of serving ~
more than double the population now being served.
A portion of the above water consumption may be avail,able for recharge
to the ground water system. Using a consumptive use factor of .59, as 3
developed by Todd, 41 percent of the total water consumed would be available
for percolation into the ground water system. This would represent a total ~
of 6.1 million cubic feet per year (.2 cfs), of which 2.5 million cubic feet
per year (.08 cfs) would be from sewage disposal systems. If this entire
amount of water were to percolate into the ground water it would represent
less than one-tenth of one percent of the total flow of the aquifer.
It is not anticipated, based on the above, that the proposed project ~
w111 have any perceptible effect on the quantity of ground water. The pos-
sibility of ground water quality degradation as the result of percolation
of sewage treatment system effluent is discussed in the sections on ground
water quality and sewage treatment.
c. Measures to Mitigate Adverse Impacts ~
None
d,. Unavoi,dable Adverse Impacts
None. ~
•
•
74
~
~
3.8 Graund Water QualTty
a. Existing Conditions
~
Pursuant to section 1424(e) of the Safe Drinking Water Act 19 the
Federal Environnental Protection Agency (EPA) has designated the Spokane-
Rathdrum aquifer as the sole or prfincTpal source of drinking water for
approximately 338,000 people in a portion of northern Idaho and eastern
'Washington. The designated "sole source" area includes the aquifer recharge
~ and streamflow areas shown above. The sole source deslgnation ier the
aquifer was based upon the followTng determ7nat7ons 6y the EPA:
. 1. The Spokane Val 1 ey-Rathdrum Prarri e Aqrui fer i s the
"sole source" of high quaalTtyr drinking water for over
338,000 people including cities and towns and people
Q using individual wells. Current water supply treatment
practice is limited to minimal disinfection for some
systems and no treatment for other systems for drinking
purposes, and there is no alternative source of drinking
water supply which could economically replace the Spokane
Valley-Rathdrum Prairte Aquifer.
~ 2. The Aquifer is vulnerable to contamination through
its recharge Zone prlmarily because the glaciated soils
which are highly permeable. There is evTdence of 10-
calized contamination from Tndustrial sources and septic
tanks. Si nce contami nation of a ground water aquifer
can be diff icul t or imposs i bl e to reverse, contar,» nati on
~ of the Spokane Valley-Rathdrum Prairie Aquifer could pose
a significant hazard to those peopl e dependent on the
aquifer for drinking purposes.
The sole source d'esignation will require projects which receiv e Fed eral
financial assistance and have a potential for polluting the aqu3fer be
~ subject to a special EPA pre-construction revlew. The basis for the review
is whether or not the risk of contamination of the aquifer created by the
proposed2?roject is sufficient to create a"significant hazard to public
health".
Water Quality Standards
~ Federal standards for dr,inking water quality have been established
by the EPA. The following table shous the maximum allowable contaminant
leve1 (primary staindard) and the proposed secondary standard for each po-
tential water quality contaminant. The primary standard establishes the
maximum allowable contaminant level for c hemical constituents of drinking
~ water which may affect the health of consumers. The secondary standards
are only guidelines and deal with the aesthetic qualities of drinking water.
The inorqanic constituent of primary concern in the aquifer is nitrates
Excessive concentrations of nitrate in drinking wa ter produce a bitter
taste and may cause physiological distress. The nitrate ion has also been
~ implicated in the occurrence of mLbtihemglobinemia (i.e., "61u e Baby" syndrome).
Heavy metal such as lead,topper, mercury and cadmium can be toxic in
excessive concentrations.
~ 75
~
WATER QUALITY STANDAROS ~
Chemical Standards
Maximum Proposed '
Constituent Contaminint Seconda2y
Level Level
Iron 0 3 mg/L ~
Manganese 0.05 mg/L
Sulfate 250 mg/L
Chloride 250 mg/L
Fluoride 2.0,mg/L •
Nitrate 10. mg/L
Total dissolved soli,ds 500 mg/L
PH <65or>85
Col or 115 pl'ati num ~
cobalt
units
Turbidity 1 to 5 JTU
Foaming Agents (detergents) 0.5 mg/L
Arsenic 0.05 mg/L ~
Barium 1. mg/L
Cadmium 0.010 mg/L
Chromium 0.05 mg/L
Copper 1 mg/L ~
Lead 0.05 mg/L
Mercury 0.002 mg/L
Selenium 0.01 mg/L
Silver 0.05 mg/L •
Zi n'c 5 mg/L
Endrin 0.0002 mg/L
Lindane 0.004 mg/L
Toxaphene 0.005 mg/L ~
Phenols3 0.001 mg/L
1 National Interim Primary Drinking Water Regulations (U.S. Environmental Pro-
tection Agency, 1975). Primary regulations are those which deal with constituents ~
that may affect the health of consumers.
2National Proposed Secondary Water Regulati,ons (U S. Environmental Protection
Agency, 1977) Secondary regulations are those which deal with the,esthetic
qualities of drinking water These are guidelines only.
3Chemical standards for phenols are not included in the primary or secondary
regulations. Because of the frequent use of phenol by industries sltuated above ~
the aquifer, the available phenol data is included and referenced to the Public
Health Service (1962).recommended limit of 0 001 mg/L.
Source: United States Geological Survey.
76 ~
~
Ph.ysical and Inorganic Chemidal Characteristics
~ The available water quality data indTCate that the aquifer generally
yiel ds water of excel l ent qua 1 ity. A sumnary o f the chemi ca 1 qua 1ity of
the water from the aqu1fer ts included in the followinq table. Only those
constituents for which a federal primary or secondary standard have been
established are included in the table. This table nepresents a summary of
about 9,600 analyses from 400 ground water sites located throughout the
~ aquifer.
(1) Contaminant Levels Yn Excess of DrTnking Water Standards
The maximum contaminant level of five of the eleven characteristics for
which a primary water qual,ity standa,rd has 6een established (those that may
affect the health of consumers) have been exceeded in a small number of
~ samples from the aquifer. The maximum contaminant level of barium, cadmiwn,
mercury, selenium, chromium and silver were never exceeded. Flouride,
nitrate, turbidity, arsenTC and lead maximum contaminant levels were exceeded
in a total of 16 analyses, which constitutes less than one-half of one
uercent of the analyses for tfiese consti tuents.
~ The recommended levels of 8 of the 10 characteristics included in the
proposed secondary levels, which deal with those characteristics that may
affect the aesthetic quality of water, have been exceeded in a small number
of samples from the aquifer. The recomended levels of sulfate and foaming
agents (detergents) were never exceeded. The reconrnended levels of manganese,
chloride, total drssolved solYds, pH, color, copper, and zinc were exceeded
~ in less than two percent of the samples. Iron exceeded the recmnended
level in almost eight percent of the samples tested. Proposed secondary
levels were exceeded a total of 87 times (1.4 percent), from a total of more
than 6,300 tests.
The following table lists the ground water sites where the primary or
~ proposed secondary drinking water standards have been exceeded. Five of the
sites where drinking water standards have been exceeded are located 1n the
general vicinity of the proposed project site, as shown in the following
figure. At site 25/44-26L1 (Vera No. 4), which is located 1/2 mile north
and 1-1/2 mile east of the project site, the standard for nitrate, flouride
and manganese were each exceeded once. At site 25/44-29A1, lJashington lJater
~ Power No. 2-4, which is located about one mile north and 1-1/2 miles west
of the project site, the standard fo r co pper and lead were each exceeded
once and the standard for iron was exceeded twice. At three other sites
(25/44-27E1, -27L1 and -28L1), located within about 1-1/2 mile of the
project site the standard for iron was exceeded a total of three times.
The iron standa rd is a proposed secondary standard set to deal with those
~ characteristics which may affect the aesthetic quality of water. As dis-
cussed above, iron in high concentrations in drinking water has a tendency
to discolor the water and cause a staininq of porcelain. Occasional vio-
lations of the iron standard occur throughout the aquifer and the magnitude
and frequency of violation in the vicinity of the project site are not
unusual.
~
~ 77
~
Summary of qround-water-quality data ~
Checalcal standards
N'umber DTtsmber Maximum Proposed Number Number Maximum
1 of of contam- secortdasy of sitea of value
i Constituent sites samples inant level exceeding samples observed
tested tested level2 (EPA chemical exceeding ~
(EPA 1977) standard chertucal
1975) standard
Zran 212 758 0.3 mg/L 40 58 78 mg/Y.
Menqanese 200 700 0 OS mg/L 12 12 1 6 mg/L
3ulfate 168 596 250 mg/L 0 0 210 mg/L ~
Chloride 364 1,115 250 mg/L 1 4 >1,000 mq/Y. I
Fluvride4 210 706 2 0 mg/L 2 2 3 2 mg/L
Nitrate 247 940 10 mg/L 6 11 28 mg/L
Total diasolved
solids 364 1,087 500 mg/L 3 3 539 mq/Y.
pq 229 918 <6 5 or >8 5 3 3 Range ~
62 to94
Color 128 484 15 platinum 5 S 21 units
cobalt
uni ts
Turbiditys 139 462 1 to 5 JTtT 1 1 10 JTU
Foaming Ageats ~
(deter~jo-nts) 25 77 0 5 mg/L 0 0 0 1 mg/L
Arseaic 89 185 0 OS mg/L 1 1 0 064 mg/L
Harium 3 3 1 mg/L 0 0 0 070 mg/L
Cadmium 112 336 0 010 mg/L 0 0 0 OOb mg/L
Chromium 93 186 '0 05 mg/L 0 0 0 03 mg/L
~
Copper 97 210 1 mg/L 1 1 5 2 mg/L
Lead 110 235 0 OS mg/L 1 1 0 42 mg/L
Mercury 99 196 0 002 mqn. 0 0 0 0002 mg/L
Selenium 3 3 0 01 mg/L 10 0 <0 010 mg/Y.
Silver 3 3 0 OS mg/*. 0 0 <0 005 mg/L
~
2inc 97 395 5 mg/L 1 1 7 5 mg/L
E~drin6 17 17 O 0002 mg/Y. 0 0 <0 002 mg/L
Lindane 17 17 0 004 mg/L 0 0 <0 001 mg/L
Toxaphene6 l; 17 0 005 mg/L 1 1 0 060 mg/L
iPhenols7 24 77 0.00 mq/Y. 16 18 15 mg/L 0
Source: U.S.G.S. ~
78
~
~
~ Bacasda ot locmtiooo wtmso conacituento in ground-.wtor aampies Anvo e:ceodo0 c3scalcnl oeandseds
Conncicuene Sieo Oste Sito Dace Sleo Oaee
number ooaaimd tralun nnmbes oaaplod Value aumbos eomplod Value
Icoe 24/42•111l1 11-22-65 0 58 ng/t. 25J4M 15P2 5-12-70 1 1 aq/L 26/0-241P1 4-29-60 1 1 mg/L
25/43-21111 5-07-70 43 21-11-71 32 -24P2 10-77-61 1 3
12-13-71 32 •17!!1 7-01-75 10 4-19-64 61
~ 1-18-72 44 -27E1 7-17-72 48 -25C1 5-07•75 35
7-24-72 74 ~•27L1 3-11-70 1 4 •34t.l 4-27-71 1 0
9-14-72 70 •28[.1 5-10-71 34 •3691 6-28-73 3 1
-24Gl 5-13-70 62 -20-1t 2-14-72 42 9-?6-77 Sb
1]-]1-71 34 3•31-72 36 12-lB-79 1 S
6-12•72 76 13/45-7Al 4-27-71 90 26/a6•31K1 S•14-70 42
-24I.1 3•14•72 78 -1!D1 12-U-71 34 11•1+-71 40
3-31-72 -1°ik1 2-14-72 34 SD/d-]JNIDI 6-I3-76 78
25/44-3H1 10•09-75 38 8•10-72 32 50/5-8IIBA1 3-16-76 6 6
-Hall 5-12-70 48 -1E81 7-24-72 68 8-29-76 79
~ •4J2 4-16-71 38 26✓42-12L1 5-12-64 32 6-14•76 16
•11R 1-16-71 2 0 S-15-75 32 SL4-29C7lA1 4- -16 60
-12J►1 5-01-75 31 26l41-601S 20-114 12 40 6- -76 50
-12D g-01-75 32 -6038 10-18-72 34 •31DOC1 6•23-76 3 6
-13lLL 5-15-70 44 -14711 7-04-75 34 •318CD1 S-25-76 1 I
•1521 3-16=72 72 •10Y1 4-30-70 80 S3/7-38AC1 10- -76 70
-71A1 5-79-75 31
1d nqat►sso 25/42-1381 3-20-74 0 14 mq/L 25/I4-7C1 5-10-70 u 4S2 aq/L 26/43•B84 4-12-64 0 48 mg/t.
2S/47-12H1 6•19-72 70 •1581 7-02•75 `060 26/46-31Ml 5-14-70 060
15/44-1J1 11-03-75 1 6 -26L1 S•22•72 060 50/4•3AA01 6-23-76 1 4
Q -b1►1 10-10-72 OS2 26/42•IILI 5-15-75 060 S1/2-90 5-08-74 11
CAlor►Qe 26/13-34a1 S-24-SS 370 ea4JL
5-25-34 470
6-13-SS 700
6•24-54 311 000
Plttotlde 25/1H 2fiL1 12•13-71 2 7 mg/L 52/h2CDC 3-07-74 ) 7 mq/L
Nttrete 25/44-26L1 11•04-70 16 mg/L 52/0-31CA81 7- -7S 26 mq/L 34/2•34GCI 10- •75 14 aq/L
2-14•72 11 52/5-ISDCDI 7- •75 29 7• -76 17
26/44•3201 9-27•73 11 54h-34cJ1C1 0- •75 23 8- •76 11
Sl/4-758B7►1 10- -76 11 10- -78 20
goWl 24/44-7Q1 6•10-70 537 mq/L 25/44-17A1 G-06-74 SI9 mg/L 39/4•270AC1 1.• -75 508 wq/t.
dloaalvod
sol&d•
pH 2S/43-2401 5-13-70 8 8 vnlca 25/45-I40I 20-21-59 9 4 untce 26/33-2OJ2 12-16-62 9 0,UnitA
Colorl 25/44-4J1 5-04•71 21 P..'li 25/44•801 4-19-71 11 PN 26t44-32iLL S•05•71 20 PN
~ 5A1 9-14-71 20 -18J1 5-10-71 16
Tt~iDlditq2 26/43-601S 1-17-13 10 Jrt!
Atnanic 26/43-78I3 9-26-73 0 064 mq/L
Copper 25/44•24A1 9-14-72 5 2 mg/L
Lcad 25/44-29A1 9•14-72 0 42 09/L
zinc sx/aiTaeci e- •75 7 S oy/=.
~ 'loxsphano 26/42-17A1S 9-26•77 0 060 mqJL
Pharsals 4.,43-1414 6-27-77 0 002 mg/L 23/44-1401 9-26-73 0 002 mq/L 26/42-27H1 6.29-71 0 012 mq/t
25/44-1.T1 11-17-75 15 25/43-4C7 6-06-70 002 26/03-SLl& 6-29-73 002
•201 6-27-73 007 •15G1 4-29-73 004 •7819 6-19-73 004
6-14-74 002 26J42•i1Jlr. 6-27-73 aDS -L6p 6•10-74 002
•7C1 9-25-13 002 -1JJ►19 6-29-73 003 26/05-75Y1 6-28-77 000
-1602 6-27-73 002 9•26-73 004 -3601 9-26-13 001
1 PW • placirtum-cabale unlta
~ 2JiV p JacMaoo tusbidity uaita
~
Source: U.S.G.S.
~ 79
1
wilI I siv1 nvi ~ vAney N43 SP ~
' CLR
` ( l11 1w a nµt~►' ~n I 49 7KI '1 YW(l
N
av
NIW11n%1.'xi NDAII
~ s~r,k 5 0
ktvl CLR .
° ~ . ~a TDS mn
hnl t hpUp PN
o~~ =
~ 5I PN C.R,~ ` PN ,l , -
Fs eFe
4 t"IVIN 52 - r .
,
Fe
~ iuiKiA,rl PN 47
~ i ~ ~~~Y m <
d c
0
- ~ Pld < a ,
~
~riIAY AYI'
BPO~1N ~ Q CLR F n
~ ~ e Fe
svaAri~~vE ~ hvaec i i v
( x ~ I_ 5MNA1'lll AYI ~
co Fe ~ pisiiNinv ' , ~
01 I'ON1 UNIT1 ,
O Fe PN a 11 HAUAI.I-
c
~ Y
~ 't ` i mae iii.►~u
F@
/ p 1uilWu wa1M pwlpy yllr
Illbn~a ~ ~
Fe ~ ~ «wMru~6nam~w
~ ~ PQ V a ~ ~ Iw16 ui wdprryumu! wnn
p ~ Fe ~ aC ywl{1~L,sn6euJuliErmkd
~ m OUm4uds d k U mir
pAn
lita
cU.NaasI. , Fe Fe F ,lans'stwor
~ a. ,e e, u ~ hbeial.
( ~~1 ~{R !~//JJ/ 1 ~ ~ {~7pq11~C
03
GKOUNUWAfLRQUAIITYSfANUARUS r~~SITFI' ~
I ~ YIOLATIONSIf"IS
//II/ //I n J (U 4 npp1q
7 ~ fb I~ul
+i
I z
~ ` .~i 1 h IYrciqd~
~
- - - ~ ~ IhhAa ^
NIh P.
e
~VI ..M.. ~ ~ r ~,rr«b. r•.. I
souacL u s C. s
~
Of the remaining vlolatlons of drinking water standards that have
occurred in the vrcYnity of the project site, several are suspected to be
~ the result of analytical error or contamTnation of the sample. Because
of the large number of analyses and because the data were obtained from a
wide variety of sources representing different sampling techniques,
analytical methods and data reportinq practices, the possibility exists
that inaccurate data is included in the tabulations included above and
elsewhere in this report. The USGS has specifically indicated in its recent
~ report on the aquifer that the violatron of the flouride standard reported
' at site 25I44-26L1 (Vera No. 4) and the high lead and copoer,concentrations
reported at site 25/44-29A1 (tJWP 2-4~~nay be inaccurate due to analytical
error or contamination of the sar~ple. Wh71e not mentioned by the USGS
the reported nitrate level in excess of the standard at site 25/44-26L1
(Vera No. 4) also appears suspect. This well was tested for nitrate 17
times between,1970 and 1974. Of these tests, 15 showed values of nltrate
~ of 2.9 mg/1 or less, one showed 3.7 mg/1 and one showed 11 mg/1 exceeding
the maximum contaminant level of 10 mg/1. 6ecause it is incompatable with
the remaining data, the ex treme value may represent analytical error or
contamination of the sample.
Q (2) Historical Water Qualfty Trends
~
A tabulation of data from 11 groun`d water sites located in the general
vicinity of the project sYte are included in Appendix B to this report.
This tabulation includes all availa6le data on the chemical quality of the
water from these sites. Sample results from the Spokane County "208"
Water Quality Management Program through February of 1978 are included as
~ is data through December 1977 from the on-going USGS s'ampling program.
Detailed camparison of this data from one time to another may be misleading
because of changes in samplYng and analytical methods over the years have
generally improved the accuracy of the result. Data reported prior to
1970 is of less value than that reported su bsequent. The data considered
most reliable are the "208" study results reported by the laboratory at
~ Washington State University and the results of the on-going USGS monitoring
program. The "208" study reported "fleld data" is less reliable because
it is generally the result of less accurate and rellable analytical methods.
In its interim report the "248" study reports signifTCant deviations between
nitrate leve]s in duplicate samples run at Washington State University and
the field results reported by Spokane County.
~
The available water quality data show that while the concentration of
any one chemical constituent may vary fram sanple to sample at a particular
site, no long term trends of changing9water quality are apparent. A listing
of historical nitrate levels from selected wells near the project site from
about 1950 to present are shown in the fo11ow1ng table. No trend of changing
~ nitrate levels is apparent from this data. A siglar conclusion was reached
by the USGS in its recent report on the aquifer.
(3) Water'Quality Variations Within the Aquifer
In general there is little chanqe ln the quality of the ground water
~ from sampl i ng points near the tlashington-Idaho S 24 e 1ine to the outl et
springs north of Spokane except for salt content. The available data indi-
cates that there is a moderate increase in salts cohtent in the aquifer as
~
81
~
Historical Nitrate Levels From Selected llells Near Project Site
Total NTtrate, mg/l
Well Site 1938/521 1971-722 19773 ~
WWP 2-4 2.6 2.7
Modern No. 9 1.9 2.5
Vera No. 4 2.8 2.6
WWP 1-4 5.2 ~
Modern No. 1 2.4 1.0 .9
Vera Plo. 1 1.5 1.3
1 Weigle and Mundorff
2DSHS ~
3208 Field data corrected by .75.
it passes from the State lTne through the Spakane area. The following table
shows a generally TncreasTng concentratTOn of salts at selected cross-sections ~
of the aquifer progressing from east to west. Conductivity, nitrate and
chloride concentrations for the various cross-sections of the aquifer based
on data from the on-going USGS study are shown on the followinq figure.
This data shows a very slight increase in salt content as the aquifer
passes under the Spokane Ua11ey from State line to about Opportunity. Over ~
this section nitrate levels increased from .9 mg/l to 1.2 mg/l while con-
ductivity (a general indicator of dissolved sol ids) increased from 281 to
292 micromhos. From the area near Opportunity to the east city limits of
Spokane the quality of the ground water, in terms of salt content, improves
somewhat. Over this section conductivity, chloride and sulfate levels all
decreased slightly while nitrate levels renialned about constant. The interim ~
report of the "208" Water Quality P1anagement Program indicates that this
improvement in ground water quality near the east city limits of Spokane
may be due to influence from the Spokane River which discharges to the ground
water along the Upriver Dam backwater area.25 The most substantial increase
in salt content occurs between the cross-section at Parkwater and the one
at the north city limits of Spokane. Over this section conductivity, nitrate ~
chloride and sulfate concentrations all show an increase. Nitrate concen-
trations increase from 1.2 to 2.6 mg/l and chloride levels go to 4.4 from 2.1
mg/1.
The ground water quality data from the on-going USGS study of the aquifer
used to show the variation in ground water quality at selected cross-sections
of the aquifer is included in detail in Appendix B to this report. A similar r
analysls which has been made by the "208" Water Quality f1anagement Program
using "208" field data results, which generally confirm the observations
made above, is also included in Appendix B.
The source of the increase in salt concentrations as the aquifer passes
through the Spokane area is undetermined at this time. Crosby has noted that •
some increase in dissolved solids concentrations could be expected due to
82
~
Uariation in Ground Water Quality at Various Aquifer Cross Sections
Contaminant State line Otis Orchards Opportunity Parkwater North City limit
Conductivity,
micramhos 281 255 292 257 360
Iiardness,
mg/l as CaC03 148 143 155 141 2n4
Chloride, ,
mg/l .92 .99 2.1 1.6 4.4
Nitrate,
mg/l .93 1.04 1.2 1.2 2.6
Sulfate,
w mg/l 11.8 12.2 12.5 12.4 20.9
Approximate distance
from State line,
in miles 0 4,0 9.0 11.0 17.0
Source U.S.G.S. monitoring data, 5/77 through 12/11.
~ .
»
L Mi aa+~vn►o/
imMw~v ~ 281
Nine 1~111e bkrQ ~M po t 93
.
~ 93
1 i~ftilc 1'retrk ' Plessinl NrnirlL ~
I w■mwaue ~ ~
Sevtn Atilo ~ 44
26 :92
21 :35 '
I: yy ~
104
tiloqan Acrn au m ndl» ao . 0
u A
~:sT Dso
16
2 Pamlll J IlJrR Trcmwrnid H
1
~I n ~ J uo~a°' Qtls -ltchu►dY e P$w~tv 0
S,O~ I
q~e A,dlwk e V81
, .
~ 1 ~ 1 FtiIs~aw P
~ . °
I pI ~ p ao.W nw . ~ U °
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VARl,1TiON IN uHl1UND WATkR QUAWTY AT
i
` VARIOUS AQUIFER CROSS-SCCTlUNS
1 Flil hD
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natural geologic and hydrologitc mechanisms. This would include the possi-
bility that some salts may be di\ssolved from the soil materials that the
aquifer passes through. This explanation is supported by the lack of any ~
long term trends in water qual7ty noted above. Surface recharqe from the
hills adjoining the aquifer or from the area above the aquifer is another
possible explanation.
A review of the data Yncluded in thTS report indicates that a variation
in water quality exists Tn tfie area south of Opportunity and in the g eneral
vicinity of the project slte in comparrson to the main body of the aquifer ~
to the north. This area is located on the south margin of the aqulfer
where, as indicated above, the transmissivlty and flow of the aquifer is
apparently lower than in the main body of the aquifer. Data from three
ground water sites in this area (25/44-26L1 (Vera No. 4), 25/44-27E1
(Modern Noa 9), and 25/44-29A1 (I4rIP 2-4)) which provide the most complete
and long term water quality records in the area show higher chloride and ~
nitrate salt concentrations than the main body of the aquifer These ground
water sites also show higher conductYVTties (an indicator of salt concen-
tration) than do sites to the north. The following two figunes show the
somewhat higher nitrate levels found in the general area of the project
s i te conpared to the area to tFie north. Thi observation i s noted i n the
Spokane County "208" Program interim report ~6 and is confirm by the 4D
preliminary data from the on-going USGS study of the aquifer.27 There is
insufficient information at this time to establ ish the reason for this
variation. Similar areas of high salt concentrat~$ns have been noted in
other areas 1 ocated on the margi n of the aqu i fer. It i s suggested i n
the "208" Program interim report that thls variation may be due to a
combination of ground water recharge from sources above or adjacent to the ~
aquifer in these areas and the lack of mixing due to lower aquifer flow
rates near the aquifer margin.
The USGS 3nd the Spokane County "208" 64aste Water Planagement Program
in their on-going monitoring program have collected and analyzed a large
number of ground water samples from depth selective wells. These wells ~
allow the collection of ground water samp1es at va rious lev els below the
surface and provide data on the variability of ground water quality with
depth. USGS data from 13 depth selective wells are included in Appendix B
and includes the results of samples collected from May through Decenber of
1977. Results of the Spokane County "208" depth selectiv e data are in-
cluded in its Interim report and are not reported here. The "208" field ~
data covers the same ground water sites and time period as the U9GS
sampling but is considered less reliable as it is the result of less
accurate and reliable analytical techniques. The location of the depth
selective ground water monitoring sites are shown on the following figure.
The resul ts of the depth sel ective sampl i ng over thi s time period ~
indicate that the ground water generally is of unifom, quality over depth.
Of the 13 monitoring sites only two showed any indication af stratifica-
tion of contaminants. The most clear cut exce@tion occurred at site 25/44-
17R1 (Dalfour Park). At this site depth selective samplings were made by
the USGS on four separate occasions. The results are shown on the following
table. The samples collected on October 10, 1977 indicated definite strati- ~
fication of salt content. Chloride concentrations were ~found to vary from
86 ~
~
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SOURCC SixtIoneCuuniy 208 Prugram
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9
~
WATER QUALITY FRON1 DEPTH SELECTIVE GROUND WATER SITES
~
Ground Water ldentifier Sampling Sampling Conductivity Dissolved Dissolved
, Site Number Date Depth (micromhos) Chloride Nitrate
(mq/L) (mg/L) 208 Balfour 25/44-11R1 77-05-18 77 - 1.6 1.2
Park 76 - 1.6 1.2 ~
79 - 2.6 1.4
83 - 2.4 1.4
98 - 4.7 1.5
118 - 1.5 1.3
~
77-08-03 70 309 1.7 .67
74 312 1.6 .94
88 310 1.7 1.1
114 360 1.8 1.2
- , ~
77-08-05 70 258 2.2 1.2
74 249 1.8 1.2
88 254 1.8 1.3
114 256 1.6 1.3
77-10-13 77 375 6.4 ~
-
82 350 5.8 -
87 300 3.1 -
92 275 1.9 -
113 250 1.7 -
~
~
~
~
90 ~
e
6.4 mg/1 near the top to 1.7 mg/1 at denth. Three prior samplings at
this site, however, failed to give any indicatron of stratification.
This could indicate that stratification is a seasonal phenomena but sub-
~ stantially more info°rmation is necessary before any definitive conclusions
can be drawn. Samples from sTte 26/43-7G1 (Whitworth Test we11) indicate
a small chioride concentration gradlent with depth. Only one sampling by
USGS has been made at thts site, with chloride concentrations varying from
3.6 mg/1 near the surface to 3.2 mg/1 at depth. The data from this site
is insufficient to draw any conclusions regarding stratification. None
~ of the other monitoring sites gave any Yndication of stratification.
Coliform Bacteria
A large number of bacterTOlogical tests have been run on ground water
samples from the aquifer and the results are included Tn the files of the
~ Washington State Depa rtment of Socral and Health Services and the Spokane
County Health District. No summary of these data is presently available
No attempt was made to ta6ulate these data as part of this report because
the vast majority of analyses reflect the sanitary condTtions of the wells
and distri=bution systens and generally are not irndicative of the bacterio-
logical quality of the aquifer.
~
Col iform bacteria have been identified in water samples from the aquifer
at a number of sites. In the past at least four cases of coliform bacteria
problems have reportedly occurred. In these above cases, it is not known
if the observed col iform bacteria were present because of contamination of
~ the ground water or because of poor well construction.
A large number of coliform 6acteria analyses have been run as part
of the Spokane County "208" liaste Rtater Management Program. The results
of these coliform bacteria analyses have 6een consistently negative from
all sampling sites.
4
b. The Probable Impact of the Proposed Action
The development of the proposed resTdentTal development project impacts
on ground water quality may result from the following sources: (1) waste
water collection, treatment and dlsposal facillties; (Z) storm water drainage,
~ (3) sol id waste disposal methods; C4) chemical transport storage and use; and
(5) disruption and covering of soil due to construction activities.
Percolate Dilution
~ As noted above the Spokane-Rathdrum aquifer is a very dynamic ground
water system. It has an estimated average flow rate of 1320 CFS and moves
at an average velocity of a6out 100 feet per day. The potential recharge
of the aquifer that would occur from waste water disposal drainfields and
precipitation over the aquifer is a very small percentage of the total
aquifer flow as noted in the previous section. Any contaminants that are
~ carried to the ground water by percoTation of these waters would be sub3ect
to substantial dilution. First, drainfield efflu entwaters would be diluted ~ 91
~
by the relatively pure water applied to the surface area above the aquifer
by precipitation and domest7c irrigation. Todd in his study of the aquifer
has estimated that drainfield effluents constTtute approximately 12 percent ~
of the total water appl iel,9to the surface area above the aquifer in fully
developed suburban areas. Taken over the entire Spokane Valley the per-
centage would be much less. The following ta61e,_adapted from Todd,30 pro_
vides a summary of annual water balance and percolate water quality values
for the Spokane Valley under sa6urban development conditions for the year
1975 and for the year 2020, assuming apopulation increase of 54 percent
during that period. ThTS analysTS indTCates the substantial dillution ~
of dra i nfi el d effl uent that takes pl ace, as the estimated total di ssol ved
solids content of the percolate is 302 mg/1, a value substantially below
the spring water standard of 500 mg/1. A similar analysis fo r the year
2020, assuming a 54 percent lncrease in population (and drainfield effluent)
indicated that the quality of the percolate water will renain almost un-
changed. Todd, in his analysis of the aquifer comes to the following ~
conclusion:
The analytical results of the forecast impact at year
2020 when compared with tfie present impact, both measured
in terms of volume of leachate and dissolved solids con-
centration, indicate tfiat the present impact on ground
water quality is already a srgnificant proportion of the
ultimate level. I
In addition to this dillntion that occurs as the result of percolation
of precipitation and irrigation water, tFie entire percolate will be diluted
as i t reaches the ground waten and i s mixed with the ma i n fl ow of the aqu i fer p
The amount of m1-xing that occurs in the 6ody of the aquifer is unknown.
As noted in the previous sectlon, this percolate represents a very small
portion of the total flow of the aquifer. The somewhat higher contaminant
levels report in areas near the aquifer margin indicate that less mixing
may occur in these areas than in the main body of the aquifer.
•
Waste ldater Collection, Treatment and Di,sposal
The following section on Sewage Treatment discusses the probable en-
vironmental impacts from project related waste water collection, treatment
and disposa1 facilities. This includes a discussion of the probable impact
on ground water quality. ~
Sto rm Wa ter Dra i nage
As discussed in other parts of the EIS the surface water runoff from
the project site will be disposed of on-site through the use of a system
of catch basins and dry wells. No provisions are made for the treatment ~
of surface water drainage. It can be expected that surface water runoff
from the project site wi11 contain minor amounts of some ground water
contaminants. These tivould include suspended solids, petroleum based hydro-
carbons, dissolved inorganic salts (for example lawn and garden fertilizers)
and herbicides and pesticides used for domestic purposes. The majority
of the contaminant are subject to substantial removal as the stom water ~
percolates through the soil column above the ground water. Soil systems do
not generally retain anions including nitrate, chloride, sulfate and
92 ~
~
~
Summary of Annual Water Balance and Percolation Qual ity Values
for Spokane Val l ey Su6urban Conditions
~ 1975 2020
Mean Annual Precipitation, in. 19.5 19 5
4 Septic Tank Effluent, in. 3.95 6.24
Lawn Irrlgation, tn. 8.05 10.09
Agricultural Irrigation, in. 0.72 0.21
~ Total Appl ied Water, in. 32.22 26.14
Percolation, in./yr. 11.11 15.39
TDS of Percolation, mg/1 302 304
40
Source: Todd, U.S. Army Corps of Engineers.
Q
4h
~
~
~
~ 93
~
bicarbonate. These dissolved inorganTC material will move with the percolate
waters and may pose potential for gronnd water containination.
Sol id tJaste Di sposal ~
As noted in the section on solid waste disposal below, it is estimated
that the proposed project w111 generate approximately 1,100 tons of solid
waste per year. DTSposal of this solid waste wouldioccur at extsting
County managed sanYtary landfills. The majority would be disposed of at ~
the County 1 andfi 11 at Mi ca, Was hington . I t i s not anti c i pated that the
solicl waste generated by the proposed project would generate any significant
or unusual ar,iount of toxi c waste. The P1i ca 1 andfi 11 site 1 s shown on the
following map. It is not located over the aquifer recharge area but is
located in the designated streamflow area. This landfill takes place in
an abandoned clay open pit mine site. This clay surface around the land- ~
fi11 forms an impervious surface which provides a barrier to leaching
of polluted water from the landfill site. Leachates from this landfill
site does not pose any threat of ground water contamination.
Chemical Storage, Transport and Use
As indicated elsewhere lin the ETS space heating within the proposed ~
project site will be exclusively By natural gas or electricity. It is not
anticipated that any on-site storage of fuel oil or petroleum products
will occur on the project site. Thu s a threat to ground water quality from
the accidental spillage or leakage of these materials does not exist.
It is anticipated that 6y its very nature the proposed project would ~
result in the use of fertilizers, pestlcides and herbicides for domestic
yard and garden use. These materlals whTle potential ground water pollutants,
would not be used lntensively enough to pose a threat to ground water quality.
Proximi ty to Water SuAP1Y Wel 1 s
- ~
The location of water supply wells in the vicinity of the project
site are shown on the following map. The water table gradient in this area
results in a groundwater flow to the northwest as shown in this map. The
closest well down the flowline from the proposed drainfield location is
approximately two miles away. There is a well located within about 1/4 mile
of the proposed drainfield site but it is not in the projected ground'water ~
flowline from the drainfield. If the proposed project were to have any
perceptible impact on ground water quality it probably would occur at well
site 25/44-29A1 (WWP 2-4). The distance of this well si,te from the project
site is sufficient to preclude any significant localized impact.
c. Measures to Mitigate Adverse Impacts ~
The potentlal impact of this project cauld be mitigated by reducing
the density of the proposed project. This would have the effect of reducing
proportionately the level of contaminant that must be controlled, treated
and/or disposed of on the surface above the aquifer. Lowering the density
of the project, however, may work against an ultimate solution to the pro- ~
blem of ground water contamination from d rainfield effluents. Low density
developments will be substantially more expensive to sewer if it is deter-
~
94
t..
I t0 tiat~~nmtl~i I\ 1(l1~I)
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aiu+cu ~i ~ ~ ,tw~iu ~~i hru,c~~
UP ~ I1151NIA\ I)f'i'QRfUNIT1 ~:S!44 VLI~ADALE
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+ :9A I '
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mmitluj dAywM
Iledi ul il 4u myt mfhLw
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~ I1'11I ~III(7 JINM~fIIiIW~C0E1IM1 \ 1111~ 1 w 11 11111 Jl16 1tr
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mined at the completion of on-going studies that a central sewage treatment
facility is needed for t'he Spokane Valley.
The potential of project rel ated drai nfi el d or surface water effl uent ~
contaminating ,the ground water could be mitYgated or prevented by the
operation of monitori,ng wells 6etween tfie contaminant source and drinki,ng
water supply wells. These wells could 6e used to identify water quality
trends or problems at the earliest possT6le t1me.
d. Unavoidable Adverse Impacts ~
The possibility that some drainfield or surface water effluent will
reach the water table and carry some contaminants to the groundwater cannot
I be ruled out. The extent or magnitude of this contamination is unknown
at this time and is the subject of several on-going studies. The proposed
' project provides the flexibilTty to meet future waste water treatment needs ~
as they arise.
~
. ~
~
~
~
•
96 ~
~
~ 3.9 Public blater Supplies
a. Exlsting Conditions
Sewaqe Collection, Treatment, and Disposal Facilities
~ In 1976 water was pumped from the aquifer at a rate of about 146 cfs
for domestic and industrial uses. After being used, about 64 cfs (44 per-
cent) of this water was treated in municipal or industrial sewage treatanent
plants and then discharged to surface water bodies. Of the remaining 83
cfs, about 49 cfs (33 percent of the pumpage) was lost to evapotranspira-
tion. (See section on recharge to and discharge from the aquifer.) This
~ leaves about 34 cfs (23 percent of the pumpage) which returns to the aquifer
through an assortment of waste water disposal facilities.
Interim sewage treatment faciiities processed about ftve of the 34 cfs
of waste water. These fnterim facilities are generally smali systems which
collect, treat, and dispose of waste water generated at apartment complexes,
~ shopping areas, mobile home parks, housing developments, educational institu-
tions, recreational areas, military installations, motels, and hotels. These
systems are not considered to be permanent and may be replaced in the future
by extenstons of existing sewer systems or by more elaborate small systems.
The treatment processes utilized at these interim facilities are activated
sludge, both extended aeration and conventional, and stabilization lagoons,
some of which are provided with supplemental mechanical aeration (U.S. Army
• Corps of Engineers, 1976). The effluent from these systems is ultimately
discharged to drainfields, lagoons, or seepage dltches.
Individual household systems disposed of the remaining 29 cfs of waste
water. The three basic methods of individual treatment and disposal employed
in the area overlying the aquifer include cesspools, septic tanks vrith drain-
• fields, and aerobic treatment units with drainfields. The vast majority of
individual systems consist of septic tanks with drainfieids (U.S Army Corps
of Engineers, 1976). The following figure shows the distribution of the
various types of waste water treatment systems located above the aquifer in
the vicinity of the project site.
~ A total of 76 residential units have been approved and are under con-
struction in the initial phase of the proposed project. Of these 24 units
are using septic tanks as on-site sewage disposal systems and the remaining
52 units are connected to an interim package sewage treatment facility. This
existing plant has a capacity to handle a total of 119 units and employs an
activated sludge-extended aeration process. The effluent from the interim
~ sewage treatment facility, as well as the on-site systems, is disposed of in
a subsurface drainfield. The drainfield for the interim sewage treatment
facility is located near the southwest corner of the project site as shown
on the project site map.
b. The Probable Impact of the Proposed Action
~ As discussed in the section on ground water above, no definitive con-
clusions can be reached regarding the possibility of waste water percolation
~ 97
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~ to the ground water. The available data does give some indication of per-
colation reaching the ground water thus in assessing the probable impact of
the proposed waste water disposal system the conservative assumption that
waste water percolate does reach the aquifer will be made
Effl uent Qual i ty,
~ The proposed project will result in the disposal of a treated waste
water effluent to a subsurface drainfield located above the aquifer. When
the project is fu11y developed it will result in the generation of approxi-
mately 6.2 million cubic feet (.2 cfs) of waste water per year. Using a
consumptive use factor as developed by Todd, 41 percent of this volume would
~ be available for percolation into the ground water system. Thus, it is
possible that 2.5 million cubic feet per year (.08 cfs) of waste water per-
colates into the aquifer. The chemical constituents of the treated waste
water are potential contaminants of the ground water A summary of the ef-
fluent quality of the proposed extended aeration-activated sludge system
compared to the typical effluent quality from individual septic tanks is
~ shown on the following table. In general the effluent quality from the
activated sludge systems is improved over the septic tank system. 4Jhile
neither system is effective in renroving nutrients (nitrates, phosphates, and
other dissolved salts) the activated sludge system is much more effective
than septic tanks in removing total suspended solids, biological oxygen
demand and coliform bacteria. Even without disinfecting the effluent, acti-
vated sludge systems are more effective in coliform bacteria removal be-
~ cause of the better control of organic solids.
Effluent Treatment in Soil Blosystems
The quality of the potential effluent reaching the aquifer from a sub-
surface drainfield will be improved over the quality of the effluent dis-
~ charged to the drainfield because of biochemical treatment mechanisms that
occur as the effluent passes through the soil column above the ground water
level
The mechanisms by which pollutants are removed from effluents applie
to soil systems are numerous and interdependent. As Spyridakis and 4Je1ch
• note-
the overall process...is very complex because of the large
number of variables involved. ...The fate of wastewater materials
in soils is determined by a large number of processes, including
physical retention, absorbtion on solid surfaces, plant and
~ microbial uptake, microbial degradation, volat7Tization, leaching,
chemical breakdown, and precipitation.
Most suspended solids are removed from treated effluents before they
are applied to subsurface drainfields. This is necessary to reduce or
eliminate clogging of the soil Suspended solids which are passed to drain-
~ fields are primarily fine, organic solids whicfi are removed in the top
9
~ ' 99
~
ESTIMATED EFFLUENT QUALITY~ ~
Incoming Effluent from Treatment Process, mg/L ,
Waste Water Activated Sludge- Septic Tanks
Constituent (mgLL) Extended Aeration ~
Total 225 20 50
Suspended
Solids
BOD5 220 15 100 ~
NH3 as N 25 2 25
Nitrate as N - 28 -
Organic N 15 - 5 ~
Total Ni trogen 40 30 30
Phosphate 10 8 8
Fecal Coliform
(#/ML) 1500-5500 2102 1500-5500 ~
1 Adapted from references 6, 7,and 8 of AppendTx 6, page .
•
2Assumes effluent is disinfected.
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~
100 ~
~
~ several inches of soil by physical filtration or absorption. After removal
they are degraded by soil micro-organisms in much the same manner as soluable
organics.
Under conditions of proper hydraulic and organic loading, soluable
organics (BOD) are taken up by soil Micra-organisms and converted to carbon
dioxide, water, new cell material and a complex, relatively stable array of
~ organic compounds known as soil humus.
Soil systems are also very effective in removing trace metal cations.
Trace metals which are of concern include zinc, copper, nickel, cadTpm and
lead. Mechanisms which have been proposed for the removal include•
• (1) Absorption by silicates at soil particle surfaces through surface
absorption, surface complex ion formation, lattice penetration,
and ion exchange.
(2 Metal fixation and absorption by organic matter.
(3 Surface absorption or surface precipitation on carbonates and/or
silicates.
• 4) Precipitation as a discrete oxide or hydroxide
5) Biological uptake and immobilization.
In generai, removal efficiency of trace metals may range from 9hpercent to
99 percent depending on the nature and depth of the soil column.
~ As previously noted, traditional secondary treatment systems do not
efficiently remove the primary nutrients: phosphorous and nitrogen. Drain-
field disposal of treated effluents may provide partial removal of these
nutrients and therefore decrease the potential for ground water contamination,
or if the percolate eventually reaches surface waters, eutrophication.
~ Phosphate removal is accomplished by physical/chemical retention by
soil constituents; as well as uptake by cover crops, and removal from the
site by crop harvest. As organic materials are degraded, complex phosphates
are uitimately changed to simple (ortho-) phosphates. Orthophosphates react
with the iron, aluminum, and calcium present in nearly all solls'to form
very insoluable phosphate salts. These reactions may involve cations free
~ in the soil water which results in precipitation or the reaction may occur at
the surface of soil particles which 1s termed adsoprtion. Physical-chemical
removal of phosphates increases as the depth of the soil column increases
and as the clay content of the soil increases. Clays are very fine mineral
soil particles with very high surface area/volume ratios. They are thu14very
reactive. Expected phosphate removal will range from 85 to 99 percent.
~ Nitrogen removal is somewhat more complex than phosphorous removal and
the least understood. Most of the nitrogen in the traditional septic tank
effluents is present as ammonium. Activated sludge-extend aeration system
effluents, on the other hand, contain primarily nitrate Nitrate (an
anion) is very mobile in percolation waters, while ammonium (a cation) is
~ retained strongl'y by soil particles. The ammonlum ion (NH4+) may be held
temporarily by physical/chemical mechanisms similar to those which retain
orthophosphate. In alkaline soils a small portlon of the ammonium ion will
be converted to ammonia (NH3) which may, in turn, escape as a gas. The re-
maining ammonium is readily oxidized to nitrite (N02+) and nitrate (N03f)
•
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ions by a group of aerobic soil bacteria. These anions, as well as the ~
nitrite and nitrate originally present in the irrlgated effluent, are not
well retained by the soil and move, in solution, with the irrigation waters.
They may, however, be removed, in transit, by several mechanisms. Nitrite
may be chemically denitrified to gaseous nitrogen (N2) and oxides of nitro-
gen (NO ) which subsequently escape to the atmosphere. Secondly, nitrate
and nitoite anions may be biologically converted to gaseous nitrogen (N2) ~
by denitrifying bacteria. These bacteria are anaerobic.
Although little information appears to be available on the efficiency
of these mechanisms, it is probable that they are only partially effective
in reducing drainfield nitrogen. This is apparent for a couple of reasons.
First, drainfield effluents are injected 14" to 36" below the soil surface. ~
This places them out of the most biologically active so11 horizan, the top
soil. Secondly, and probably most importantly, drainfield applications are
not carefully controlled and optimal conditions for denitrification are not
maintained.
Soil systems do not generally retain anions including, in addition to ~
nitrate, chlorides, sulfates and bicarbonates. These dissolved inorganic
materials move with the drainage water and may pose a potential for ground
water contamination.
Bacteria and viruses are removed from the treated effluent as it per-
colates through the soil. Natural filtration is the primary mechanism of ~
removal. Crosby, in his studies of the aquifer also concludes that the low
moisture content of the outwash alluvium provides an environment which is
not conducive to the survival of bacterial organisms. Crosby reports that
the deepest level of bacterial organism observed was at the 11 foot level
below the surface 35 Because of their size, viruses are generally trans-
ported to a greater depth than bacteria. Because the depth to the water ~
table is greater than 100 feet in most of the aquifer, and in excess of 60
feet in the area of the project site, penetration of bacteria and viruses
to the water table is unlikely
In summary, effluent disposal in a subsurface drainfield can be viewed
as a method of tertiary treatment (i.e, polishing of secondary effluents
by decreasing the concentration of organic contaminants, nutrients, pathogens ~
and heavy metals). Anions, such as nitrate, chlorides, sulfates and
bicarbonates are generally not removed in secondary treated effluents and
are only partially removed as the waste water passes through the soil column
above the ground water table. As such they pose the most significant poten-
tial for ground water contamination from the proposed waste water treatment
system. ~
Sludge Disposal
Sludge from the proposed waste water treatment system must be pumped
and disposed of periodically. This sludge is raw and if not property
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~ handled could pose a public health problem. It is proposed that the waste
water sludge be disposed of at the City of Spokane municipal sewage treat-
ment facility. This would preclude any potential ground water contamination
or public health problem that could result from disposal at a landfill.
Odor
~ An activated sludge-extended aeration system may result in obnoxious
odors when not properly operated and maintained. However, when such systems
are designed properly and attenti,on given to important operating and mainte-
nance characteristics such systems will operate odor free. any sewage treat-
ment system can experience odor problems during upset conditions. Odors
from package treatment systems are not an unavoidable adverse impact.
~
c. Measures to Mitlgate Adverse Impacts
Nitrates are the pol]utant of greatest concern from the dlsposal of
waste water effluent in subsurface drainfields located over the aquifer.
While other anions would be carried with drainfield percolate and may reach
~ the aquifer they effect primarily the aesthetic quality of drinking water
and do not pose a public health problem. Other pollutants are very effective-
ly removed by soil biosystems. The potential impact of nitrate coni,amination
of the ground water could be mitigated by the addltion of nitrification and
denitrification unit operations to the proposed waste water treatment facility.
These operations are extremely expensive when applied to small treatment
~ facilities. In addition they add significantly to the complexity of opera-
tion of the plant, increasing the possibility of system malfunction and up-
set. At the present time nitrification-denitrification unit operations are
not employed on any sewage treatment facility in Spokane County, including
the City of Spokane treatment plant.
~ The selection of an interim package treatment facility for the proposed
project is a factor that wiil mitigate the long-term impact that the project
may have. Such interim farilities are not designed to be pern►anent installa-
tions but have the flexibility to be modified to provide a greater level of
control or be replaced in the future by central treatment facilities or by
more elaborate small systems. The collection and distribution system is al-
~ ready provided and the cost of connection to a central treatment facility
would be minimized if it is determined that such a facility is necessary.
Proper drainfield site selection will also mitigate the potentlal for
ground water contamination from percolation of drainfield effluent. The
drainfield should be located to avoid areas where the water table is shallow,
~ slopes are steep or soil permeability is excessively high or low.
d. Unavoidable Adverse Impacts
The possibility that some waste water treatment system effluent will
percolate to the water table and carry contaminants to the ground water
~ cannot be precluded. The proposed waste water'treatment system, however,
provides the flexibility to meet future waste water treatment needs as they
arise.
103
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4: Flora
a. Existing Conditions ~
The project site contains approximately 160 acres of cleared land
which at one time was cultivated with agricultural crops In the past the
project site was used for the production of cereal grains and alfalfa. At
the present time about 60 acres of the project site is in cultivation with
alfalfa. The Spokane County Land Capability Study does not include the ~
project site within those areas designated as "prlme agricultural crop land".
Past crop yields from the project site have not been exceptional and con-
tinued farming of the land is not considered economical.
The portion of the project site not presently in cultivation now sup-
ports a continuous cover of herbs and forage grasses, mostly weeds which ~
consist of the following species: cheatgrass, bluegrass, fescue and alfalfa
persiting from prior cultivation.
There are no apparent unique, rare or endangered species of flora on
the project site.
•
b. The Probable Impact of the Proposed Action
The proposed action with its subsequent development wouid result in
the permanent disruption of the current agricultural use of the project
site. Approximately 160 acres of marginal farmland will be taken out of
production. ~
Most of the herbs and grasses that exist on the uncultivated portion
of the project site will be removed for the construction of roads and resi-
dential structures. The existing flora will be replaced with domestic ilawns,
shrubbery and foliage. In most areas this domestic landscaping will result
in an enhancement of the existing situation. ~
c. Measures to Mitigate Adverse Impacts
The disturbance or removal of existing natural vegetation may be miti-
gated and in many areas enhanced by the use of domestic landscaping.
d. Unavoldable Adverse Impacts ~
Approximately 160 acres of marginal farmland will be permanently
taken out of production.
5. Fa una ~
a. Exi sting Conditi ons
The Spokane River Valley and foothills provlde a desirable habitat for
a variety of wildlife species. The project site itself offers a similar
potential wildlife habitat, but this is tempered by the intensity of human ~
development in the area.
104 ~
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The Washington State Depa rtment of Game has i ndicated that a vari ety
of wildlife species can be found on the project site. The wildlife popula-
~ tion may be characteriied as being comprised of resident and migrating
specles. Migratory that may occasionally be found on the site include north-
western whitetail deer, cougar, and bobcat. Coyotes feral dogs, ground
squirrels, striped skunks, yellow beilied marmots, whitetailed jack rabbits,
and snowshoe hare are more numerous. Rodents include abundant field mice
and moles. Important upland game brids include Hungarian (gray) partridge,
~ California valley quail, ring-necked pheasant, and ruffed grouse.
The local Game Department biologist indicates that there are no known
rare or endangered species inhabiting the project area. The project site
does not appear to function as ei ther a source of new animal species or as
a barrier or corridor to the movement or migration of fauna.
~ b. The Probable Impact of the Proposed Action
It is anticipated that the proposed project would resul,t in some de-
crease in the number and/or diversity of wildlife that inhabit the area.
The construction of the residential development would result in a permanent
~ disruption of habitat for the large game animals. The smaller game animals
may be forced to relocate but should generally remain in the project area.
The development of the project site may cause minor disruptions of
established movement patterns of terrestrial fauna.
~ c. Measures to Mitigate Adverse Impacts
The retention of as much natural vegetation as possible will preserve
some habitat for the smaller game animals and birds. Landscaping and planting
of various shrubs, trees and foliage wiTl encourage certain fauna species to
co-exlst with humans in an urban environment.
40 d. Unavoidable Adverse Impacts
Disturbances to the ecological system may cause marginal reductions or
relocations of existing species on the site. Some existing habitats may be
disturbed by the proposed residential development.
~ 6. Noise
a. Existing Conditions
Noise is a physical phenomenon created primarily from the mechanical
vibration of solid surfaces. Man's response to noise is determined by the
~ sound level emanating from the source of noise and the frequency spectrum
of the sound. Noise intenslty represents the level of sound which is weighted
in accordance to the apparent loudness perceived by an average human observer
This number is expressed in "A"-weighted decibels and is written as dBA.
The Washington State Department of Ecology has specified regulations I
~ relating to maximum environmental noise levels. They have classified various areas or zones and established maximum permissable noise levels. These
"EDNAs" (Envlronmental Designation for Noise Abatement) are classified as
~ 105
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(a Residential areas - Class A EDNA
(b Commercial'areas - Class 6 EDNA
(c) Industrial areas - Class C EDNA •
The maximum permissible noise levels for these zones are shown in the
following table.
NOISE LIMITATIONS
•
EDNA OF NOISE SOURCE EDNA OF RECEIVING PROPERTY CLASS A CLASS B CLASS C
CLASS A 55 dBA 57 dBA 60 dBA
CLASS B 57 60 65 ~
CLASS C 60 65 70
Between the hours of 10:00 p.m. and 7:00 a.,m. the noise limitations of ~
the foregoing table shall be reduced by 10 dBA for receiving property within
Class A EDNAs. These noise levels may be exceeded on the receiving property
by 15 dBA for 1.5 minutes, 10 dBA for 5 minutes, 5 dBA for 15 minutes for
any one hour, day or night.
Since the majority of arterials and highways regularly exceed the stan- ~
dards promulgated in Noise Limitations Table an additiona,l set of standards
has been established for motor vehicles and is shown in the table below.
MOTOR VEHICLE NOISE PERFORMANCE STANDARDS
Vehicle Catecor,y 35 MPH or Less Over 35 MPH
Motor vehicles
over 10,000 lbs. 86 dBA 90 dBA
GRWR or GCWR
Motorcycles 80 84 ~
All other motor 76 80
vehicles
Additionally, circular ,1390.2 establishes standards for noise abatement ~
and control for a11 HUD projects. HUD policies discourage construction of
new dwelling units in areas which have, or are projected to have, unacceptable
noise exposures.
Noise readings were taken at the four sites on or adjacent to the proper-
ty. Values obtained are shown in the following table. These noise readings
were taken on May 24, 1978 between 3:00 p.m. and 4:00 p.m. with a General ~
Radio GR 1565-B sound level meter. Weather was partially cloudy, warm, temp-
erature about 70 degrees F. with moderate winds.
106 ~
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EXISTING NOISE LEVELS
(dBA)
~ Site 1 Site 2 Site 3
Ambient Level 48 45 44
(minimum dBA)
~ Peak Level 61 57 48
(maximum dBA)
Ave rage Level 50-51 48-49 45-47
b. The Probable Impact of the Proposed Action
~
The primary source of noise occurring as a result of the project 1s
the noise increase due to increased traffic volumes. All areas within the
project will show some increased noise levels. There w111 be a temporary
increase in nolse levels due to construction activity. Land clearing by
bulldozers and building construction wi11 temporarily increase noise levels.
• However, these activities will be confined to daylight hours. It is anti-
cipated that the greatest impact during the construction phase of the pro-
ject will be upon the existing homes in Midilome development.
c. Measures to Mitigate Adverse Impacts
• The noise levels for normal residential activities and increased traf-
fic cannot be reduced. Selective berming along heavily travelled rights-of-
way or design features such as the absence of windows facing the noise
source could attenuate noise levels for adjacent residents. Those dwelling
units subject to higher noise 1evels could be sound insulated with heavier
walls and double paned windows, and oriented to minimize intrusion of noise
~ into the more sensitive living areas.
The use of properly maintained equipment with accepted noise attenuating
apparatus will help to reduce ce rtain noise levels related to on-site con-
struction.
~ d. Unavoidable Adverse Impacts
An increase in ambient noise levels during the construction phase of
the project is adverse and unavoidable. After construction of the project
noise levels due to automobile traffic and suburban residential activities
will be somewhat higher than existing levels.
~ 7 Light and Glare
a. Existing Conditlons
There are no sources of light or glare in the interior of the site.
~ Around the boundaries there are street lights on `the existing roadways.
~
~ 1 07
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b. The Probable Impact of the Proposed Project
The proposed development will replace natural land cover with human ~
settlement features which will add new sources of light. This change will
include new artificial street light on the site itself to satisfy safety
and lighting requirements and allow for safe circulation within the stte.
This light will have little effect on the area surrounding the site as it
will be of street light intenslty and close to ground 1eve1.
~
Dwelling units will be provided with adequate artificial light for
household activity.
c. Measures to Mitigate Adverse Impacts
Street lights will be designed to County requirements and to create an Q
aesthetically pleasing image in the neighborhood. Retention of as much
existing vegetation as possible would help to reduce the impacts of 1ight
and glare.
d. Unavoidable Adverse Impacts
~
None.
8. Land Use
a. Existing Conditions
The project site is located generally south ofthe Opportunity subur- ~
ban area. At the present time about 60 acres of the project is cuttivated
with alfalfa which is marginally productive. The first phase of the proposed
residential development, whlch was previously approved, is under construction
in the northwest corner of the project site. The remainder of the project
site is presen,tly cleared and vacant land. ~
The immediately surrounding land uses are primarily of a res9dential or
agricultural nature, with much of the land being vacant. The land generally
to the east and south of the project site is mostly vacant at the present
time with a portion of the land being used for various agricultural purposes.
An elementary school is located adjacent to the east boundary of the project ~
site. The area to the north and west of the project site is prlmarily resi-
dential with densities ranging from medium to high. Scattered and small
commercial uses also exist in this area.
The projecr site is currently zoned Agricultural. The existing zone
classifications in the vicinity of the project site are Single Family Residen- ~
tial, Agricultural-Suburban or Agricultural.
b. The Probable Impact of the Proposed Action
The proposed project would result in a change in the land use of the
site from vacant and cultivated agricultural land to a single family resi- ~
dential use. The proposed project prouides for the construction of a total
of 425 residential units on about 160 acres of land at a gross density of
about 2.6 units per acre. Typical lots will have about 85 feet of frontage
~
108
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and contain about 10,500 square feet of area Actual density will vary
~ somewhat throughout the development due to roadtivay layout and topographi-
cal constraints. Phase one of the proposed project, which includes 72 resi-
dential units located in the northwest portion of the site, has previously
been approved and is now under construction
The density of the proposed project is compatible with the surrounding
residentia7 uses. In addition the proposed hig'h density residential use is
• necessary to economically support the development of the utility and service
infrastructure which will serve the development. The installation of a
sewage collection system would not be economically possible for a lower
density alternative. The high density of the developntent also makes it pos-
sible to provide housing opportunities for persons of moderate income. It
is anticipated that the housing unlts in the development will range in price
~ from $40,000 to $60,000. A lower density alternative would requlre a higher
unit selling price and a reduced housing opportunity for persons with
moderate income.
c. Measures to Mitigate Adverse Impacts
~ The impacts resulting from the increase in the intensity of the land
'use of the site could be mitigated by the development of a lower density
project. This, however, would have the effect of increasing the price of
the housing units and limiting partially the housing opportunities for mod-
erate income families. In addition Tt could effect the economic feasibility
of providing a utility infrastructure for the project.
•
d. Unavoidable Adverse Impacts
The proposed project will result in an increase in the intensity of
land use of the project site.
~ 9. Natural Reso`urces
a. Existing Conditions
Approximately 60 acres of the project site is currently used in the
production and cultivation of alfalfa hay. In the past the project site
~ has been used for the cultivation of both wheat and alfalfa hay. The pro-
ject site is considered relatively poor farm land and crop yields have not
been exceptional.
b. The Probable Impact of the Proposed Action
~ The development of the Plidilome residential subdivision will result in
the use of lumber, concrete, and other building materials in the construc-
tion of homes and the corresponding infrastructure of utilities and streets.
In addition to this consumption of natural resources, the development will
also decrease the land area now supporting the production of agricultural
crops, although only a portion of the project site is currently in cultiva-
~ tion. The land itself will be corrmitted to the proposed suburban residen-
tia1 use for the foreseeable future, and the investment 1n improvements
will reduce the options for alternative future uses of the site.
,
109
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c. Measures to Mitigate Adverse Impacts
' None. •
d. Unavoidable Adverse Impacts
~
, Approximately 160 acres of agricultural land will be permanently taken
out of production.
~
10. Risk of Explosion or Hazardous Emission
a. Existing Conditions
None.
•
b. The Probable Impact of the Proposed Action
The risk of explosion or release of hazardous substances will be a
temporary one during construction phases of development. It will be limited
to construction equipment accidents and improbable natural gas releases
during installation of the utility infrastructure needed to serve the ~
residences. Once the development is completed, all safety requirements will
have been met and no upsets would be probable.
c. Measures to Mitigate Adverse Impacts
All reasonable safety precautions should be observed during the con- ~
struction and habitation of the project site.
d. Unavoidable Adverse Impacts
None.
~
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110 ~
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ELEMENTS OF THE HUMAN ENVIRONMENT
~ 1. Population
a. Existing Condi tions
The proposed project site is located in the Spokane Valley, which is
~ designated as the east area of the metropolitan area of Spokane County.
Since 1950 this area has shown the most significant growth 1n the county.
The population of the east rea has shown the following growth from a
1950 population o~f 28,383:3g
Population Percent Increase Over 1950
~ 1960 479373 67 percent
1970 579896 104 percent
1976 759015 164 percent
During the same period the distribution of population in the valley as
opposed to the total county has increased from 12.81 percent in 1950 to
~ 19.65 percent in 1970. Meanwhile, the city of Spokane's shareas shown
a decline from 72.99 percent in 1950 to 59.31 percent in 1970.41 This
parallels the general national trend of population shift to the suburban
areas. The census figures for 1970 show total county pogglation at 287,487;
city of Spokane at 170,516; and the east area at 57,896. The county
popul~~ion is expected to reach 318,000 by 1980 and 386,000 by the year
~ 2000.
Population projections are not available for the Spokane Valley but
it is probable that recent historical trends will prevail. According to
Va11ey Chamber of Commerce data, more than 1,000 families per year moved
into the Va11ey from 1970 through 1973. Approximateiy one-third of these
~ families per year moved from the city of Spokane, one-third from the re-
mainder48f Washington, and most of the rest from California, Montana and
,Oregon.
b. The Probable Impact of the Proposed Action
~ The proposed Midilome residential development would provide a total of
425 units over a three year period. Assuming an average population of 3 2
persons per dwelling unit, this project when fully developed would house
a total population of 1,350 persons.
c. Measures to Mitigate adverse Impacts
~
None.
d. Unavoidable Adverse Impacts
To the extent that population growth increases the demand for public
~ services and institutions, it may be perceived by some persons as an adverse
impact. In thls instance it vrould be considered both unavoidable and ;
adverse.
~ 111
~
2. Hous i ng.
a Existing Conditions ~
The 1970 Census of Housing and Population shows that there were 99,869
housing units in Spokane County in 1970 Of these, 64,338 were located in
the City of Spokane and approximately 16,266 were located in census tracts
that include the Spokane Valley. Spokane County Building Department offi-
cials indicate that the total number of housing units in Spokane County in- ~
creased to about 122,000 units in 1977. The Spokane Valley is the portion
of the County experiencing the greatest rate of growth in housing units.
The southern portion,of the Valley has experienced considerable growth in
housing units in the past several years due primarily to the abundance of
undeveloped land in this area.
According to figures publlshed by the Spokane Board of Realtors the ~
average sale price of homes sold through the Multiple Listing Service
during 1977 was $35,500.
b. The Probable Impact of the Proposed Action
The Midilome subdivision,willprovide a total of 425 single family ~
housing units when completed. It is anticipated that complete development
of the project wi11 occur in phases over a three year period.
It is anticipated that bullding lots within the project site wi11 sell
for between $8,000 and $10,000. The cost of the completed housing units ~
are expected to range between $40,000 and $60,000. This lies within the
moderate price range for new construction. It is anticipated that the pro-
ject will provide housing opportunities for younger families with moderate
income levels.
c. Measures to Mitigate Adverse Impacts ~
Restrictive covenants requiring approval of construction plans wi11
help guarantee tha t the design of the units integrate with the other housing
in the area and the environmental,characteristics of the project site.
d Unavoidable Adverse Impacts ~
None.
3. Economics
a. Existing Conditions
~
The project site is presently undeveloped except for the first phase
of the proposed project which is under construction in the northwest portion
of the project site. Prior to development in 1977 the property had an
assessed value of $114,800 and the 1977 real estate taxes were $2,688 at a
m111age rate of 23.416.
~
112 ~
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b. The Probable Impact of the Proposed Action
~ Construction costs for the proposed development are estimated at about
$11,000,000. An undetermined number of jobs would be created during the
three year construction period of the project. An increase in personal in-
come and tax revenues in the local economy arould result during the construc-
tion phase of the project.
~ The project site has a current assessed value of about $114,000. As-
suming an average per unit value of $45,000, the total anticipated assessed
value of the development would be $18,850,000 when completed. This would
result in total real estate taxes from the development of about $442,000
per year.
~ The property millage rate for the project site is $23.416 per $1,000 of
assessed valuation. A breakdown of the property tax by recipient follows:
Recipient Millaqe Rate Tax Revenue $/,yr.
State 4.821 911,000
~ County 1.963 379000
County Road Fund 2.167 419000
County Library Fund .487 92000
School District 74356 11.344 2149000
Fire District No. 1 2.634 502000
~ Total 25.416 $ 4429000
c. Measures to Mitigate Adverse Impacts
None.
•
d. Unavoidable Adverse Impacts
None.
4. Transportation and Circulation
~ 4 1 Vehicular Transportation Generated
a. Existing Condition
The project site is served by a network of state and county roads.
~ Pines Road, Bowdish and University Streets are the primary north-south traf-
fic carriers in the area connecting2the area south of Opportunity with Sprague
Avenue and Interstate 90 Pines Road and the Dishman Mica Highway both pro-
vide direct access to Interstate 90, approximately 2.5 mi1es north of the
project site. Thirty-second Avenue is the primary east-west traffic carrier ~
in the vicinity of the project site. The annual average daily traffic counts
~ for the major arterial serving the project site are shown on the following
figure.
~ 113
W1iI11.51t1 AVI 1 Yd~y 59~~~ ~
~ ~Vt TRCN1WODU
Y~QUU IiVItIVI N 1111I11 po
I^ NI WUAN 1 AAV NohD
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a ( ~citY y,~ AVC MILLWOOD s
~ r ~~~µ^h ~~E p0~~ ;
r µp~µ'~ I 39 ~ :j
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u s~ Q
~
6ROA6NAY AYE
m
BPOKAbY~ Q t
SPRACUF AVE ~ 5P(iAGUEAVC SPpAGUkAVk
pISH61AN OPPORTUNITY VERAUALG
~ 1 - - o
` o a
p~ Illh Am
Z ws G -._3400 y
11WAro cc cc
3690-_ ~ W
at
~
I,}A~'
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~J
wm ~ GLhNROSE 1990 mo 270 ~
291A Are 1 32a0 Am
]U Ab
1 MINUAL AYERAGE UAILY, SITE Is o
TRAFFIC COUNTS {1977)
24N 1420 ~
"S, MtAAR A ~ IIIhAa ~1 1 tlilo
~„.„.lN. ma".M ro se~ SOUSCE Spukuna County ~fneela Deputm~t,
~ ~...a.. i.n..~--..~-- i
~ ~ ~ e ~ • ~ ~ ~ ~ ~
~
i
~ The maj or traffi c generators in the vi ci ni ty of the project site are
the existing residential developments
b. The Probable Impact of the Proposed Action
Construction related traffic generated by the proposed project should
not be significant as it will be distributed over the anticipated three
~ year development of the project. At the end of the development period the
construction related traffic would diminlsh.
The most significant transportation impact would be the result of the
traffic generated by the residential development. This impact would gradually
increase over the development period and peak when the project is completed.
~ An estimate of the probable impact due to the residential traffic generation
may be derived from the peak daily traffic volumes forecast from the proposed
project site. Assuming a worst case situation, that each dwelling unit will
generate eight vehicle trips per day, and given 425 residential units, the
estimated traffic generated by the project would be 3,300 vehicTe trips per
day. This traffic increase would be distributed over the existing ro`adway
4 network.
An extenslve roadway system within the development is proposed. A map
of the proposed roadway system is shown on the following page. A11 roads
within the proposed development will be curbed and paved to maximum Spokane
County standards. At the present time the roadway system does not provide
~ for sidewalks. The proposed roadway system integrates exceptionally well
with the existing roadway network. Numerous access points to the four
secondary arterials that surround the project site are provided. This will
allow excellent distribution of the traffic over the existing roadway system.
c. Measures to Mitigate Adverse Impacts
•
None.
d. Unavoidable Adverse Impacts
The proposed project will result in an increase in the traffic volume
~ on the roadway system in the vicinity of the project site.
4.2 Parking
N/A
~ 4.3 Transportation Systems
Please refer to the above section on vehicular traffic generated.
4 4 Movement/Circulation
0 Please refer to the above section on vehicular traffic generated.
4 5 Waterborne, Rail, and Air Traffic ~
N/A ~
~ 115
- • --_.~~"'-'`~a~ - ~
i
~
I' 32ND AVENUE
i
~
i
' Eaasting Porhon
~ . . . E
Midilome Addiuon
~
~
s
~
~ .
i~
~
~
u
1 =I
~
~
~
~
40rIH AVENLIE
~ -
,
~ PROPOSED ROADWAY
` SYSTEM ~
~
, 1200 Feet ~
1
~
~ - - - ~ - - _ . - - - - - - - " , : +
- ~
` 116
~
4.6 Traffic Haiards
•
Issues of traffic safety are discussed in the sections on vehicular
traffic generated and public services (schools).
5. Public Services
~ 5 1 Fire
a. Existing Conditions
The project site is located within the boundaries of Fire Oistrict No.
1, which serves an area of approximately 74 square miles in the Spokane
~ Valley. The Fire District operates six stations in its service area at the
present time. The closest station to the project site is Statlon No. 1
loca'ted at East 10319 Sprague Avenue. This station is located about two
miles from the project site with an estimated response time to the site of
three to four minutes. Stations No. 2, 5 and 6 are all located within four
miles of the project site. The location of the stations are shown on the
~ following public service facilities map.
b. The Probable Impact of the Proposed Action
The proposed action will result in approximately 425 new residential
units becoming the responsibility of Fire District No. 1. It is not anti-
~ cipated by Fire District officials that this development alone will neces-
sitate the hiring of any additional staff by the Fire District. It is
probable, however, that the cumulative impact of residential growth with the
Fire District boundaries will require the addition of both staff and facili-
ties by the District.
~ The project does not pose any unique or unusual fire hazards and it is
not anticipated that the proposed project would result in the need for any
special fire fighting equipment.
c. fi1easures to Mitigate Adverse Impacts
~ Potential fire hazard within the project site could be reduced by the
use of noncombustible material in construct7on and a project design that
facilitates fire vehicle access to the project site. Access to the project
would be enhanced by the naming of streets within the project site to cor-
respond with the naming used in the existing street system surrounding the
site. The extension of water mains and fire hydrants onto the site will also
~ provide additional mitigation of fire hazard.
_Any increase in Fire District services necessitated by the proposed
development would be mitigated by the addition of new tax revenues in the
amount of approximately $50,000 per year.
d. Unavoidable Adverse Impacts
•
The proposed project would result in an increase in Fire District No.
1 service requirements
~ 117
wi ui tiLtr AvL vdbr S~
~ - -
+ + y~
lP ,v~q jVl - I~PRIVFR Up111 TRChTW00ll
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~
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Volley btfssion ~
~ o Im* A Pool
m
z uRonutvnv AvE
PoUca 9n~atatlon ~
8~~ AN~ Q Fire S aUua No I Fue SlWlon
5YRAfSUf~VE ~ SPNAGUEAVL ~ NO S
SI'RALUE AVI.
9 ! ~
pp Ehe Sladoa No 6 015H6fAN OPPORTUNITY ~ VERAUALE
Univecsity Hlgh
~ Sehool s z Ctnfral Volley
( El F s Iligh Schoul
I 111A An
~ ! 5 r 61CI?ouuld Elcroldll~
L? `
i,w Ave o
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I~ ~ m ❑ Y Lvctgrcen JualntlQgfi
13
I OoAdish
` ~sn A~ ~ GLkNROSE Jnnuir 1!1 ~ic F-I Und A+ti
LOCATION OF
I PUdL1C SERVICF FACTI.[fIFS ~ 3 0
`o
Clieaer Flementaq'
ai
;
Ponaen Elemmimry
~j L~ (new) ~
- - ~ ~ umAp 01% IU~9
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EL N~quran ~arr~nn iu SCALk
iw.Mw a Iw1rn+0M.0 .r
~
5.2 Police
~ a. Existing Conditiont
Law enforcement services are provided by the Spokane County Sheriff's
Department. The project site is located in patrol district No. 3 which
covers about 50 square miles in the Spokane Valley. The Sheriff's Depart-
ment ope rates a substation at the Fire Oistrict No. 1 station located at
• East 10319 Sprague Avenue. The location of the substation is shown on the
public service facilities map. The substation is located about two miles
from the project site with an estimated response time of between three to
four minutes. According to Department officials, the Sheriff's staff is
under manned at .75 officers per 1,000 population.
~ The Washington State Patrol provides traffic enforcement and backup
services in the area.
b. The Probable Impact of the Proposed Action
The proposed project will result in some increase in the service re-
~ quirements of law enforcement agencies.
c. Measures to Mitigate Adverse Impacts
Impacts on law enforcement agencies may be mitigated to some extent
,through crime prevention techniques integrated lnto the design of the
~ structures, lighting and landscaping.
Any increase in law enforcement services necessitated by the project
would be mitigated by the addition of new tax revenues to Spokane County
tin the amount of $37,000 per year.
~ d. Unavoidable Adverse Impacts
The proposed action will result in an increase in law enforcement service
requirements.
5.3 Schoo7s
~ a. Existing Conditions
The project site is located within the Central Valley School Distrlct
No. 356. The District operates 16 school facilities from grades kindergarten
through high school. These facilities include eleven elementary schools,
~ four junior high schools and two high schools. The location of schools within
the vicinity of the project site are shown on the public service facil.ities
map above.
Elementary• The project site is wlthin the attendance area of the Chester
Elementary School which is located on Pines Road adjacent to the eastern
~ boundary of the project site Nearly all of the elementary school,s in the
area are operating at or above their design capacity. The district plans
to have a neu elerrrentary school constructed and ready for use in the Ponderosa
area west of the project site by September 1, 1979.
~ 119
~
Junior Hiqh School. The project site is within the attendance area of
the Evergreen Junior High School which is located about 1-1/2 mile from the ~
project site The 1978 enrollment at Evergreen was 650 students, near its
design capacity of 700 students. Long range plans for the district provide
for the construction of a new junior highischool by 1982. The site for this
proposed facillty has not been determined.
High School• The proj ect site is located within the attendance area of ~
University High School which is located about two miles to the north and
west. University had a 1978 enrollment of about 1,315 compared to a design
capacity of about 1,250 students. Long range plans for the district provide for the construction of a new high school by 1982.
b. The Probable Impact of the Proposed Action ~
The impact of the proposed project will probably be felt by the school
district during the period from 1980 to 1982. Using an attendance factor
of 1.2 students per residential unit it is anticipated that 500 students
will enroll in the district schools due to the Midilome development. A
breakdown of these students by grade level is shown in the following table. ~
SCHOOL ENROLLMENT EXPECTED FROM MIDILOME
Number of Percentage of
Grade Level Students Students
K through 6 250 50 ~
Junior High School 125 25
High School 125 25
Total 500 100
Source• Central Valley School District ~
The overcrowding that now exists in district elementary schools will
be a problem during the 1978-79 school year. This pressure will be relieved
by the opening of the new Greenacres Elementary School in September 1978 and ~
the Ponderosa School in September of 1979. School district officials have
indicated that with the opening of these new schools, the Chester Elementary
would then be able to accommodate the students from this subdivision.
The impacts on the junior and senior high school from the project are
expected to be more severe. These schools are now operating near or over
capacity and the district plans for new facilities probably cannot be im- ~
plemented by the time that the students from the subdivision enroll. This
could cause some temporary overcrowding in these facilities until a new
junior and senior high school are opened The proposed project would rein-
force the need for new junior and senior high school facilities within the
di s,tri ct.
•
120 ~
~
c. Measures to Mitigate Adverse Impacts
The impact on the elementary schools will be mitigated by the expansion
• of facilities planned by the district over the next 18 months. The peak
irrpact from the proposed subdivision would not occur unt11 after the new
facilities were opened. Because the elementary school lies adjacent to the
proposed project the safety of children walking to school could be enhanced
by a provlsion for sidewalks, on at least one side of the street, in the
area near the school.
~
The imp`act on the junior and senior high schools would be only temporary
until the district were capable of opening new facilities to acconmodate
the growth in housing within the district. The temporary impact could be
mitigated by the realignment of school attendance boundaries and busing
students to less crowded facilities in the district.
~
The increase in school district services necessitated by the project
would be mitigated by the addition of new tax revenues to the Central Ualley
School District in the amount of approximately $214,000 per year based on
the 1978 1 evy rate.
~ d. Unavoidable Adverse Impacts
The proposed project will result in an increase in the service re-
quirement of the school district from the addition of about 500 new students.
This may cause some temporary overcrowding in existing district facilities
and would intensify the need for new school facilities within the district.
~ The overcrowding would be most severe in the junior and senior high schools.
5.4 Parks
a. Existing Conditions
~ The proposed project would be served primarily by the parks and recrea-
tional programs of the Spokane County Parks and Recreation Department.
The County utilizes a regional park system. The County is at the present
time developing a park site located adjacent to the project site at the
intersection of Pines Road and 32nd Avenue. Terrace View Park and swimming
pool operated by the County is located about three-quarter mile north and
~ east of the project site. The Chester Elementary facilities are also used
for recreational purposes. The location of parks and recreational facili-
ties in the area are shown on the public services facilities map above.
b. The Probable Impact of the Proposed Action
~ It is expected that the proposed project v,ould result in an increased
utiliaation of existing pa rk and recreational facilities. No additional
parks or recreational facilities are included 1n the proposed project. The
surface above the sewage treatment plant drainfield will be planted with grass
but will not be used as a park.
c. Measures to Mitigate Adverse Impacts
•
Any increase in costs incurred as a result of the increased utiliza-
tion of existing parks and recreational facil ities would be mitigated by
the addition of new tax revenues,
~ 121
~
d. Unavoidable Adverse Impacts ~
None.
5.5 Maintenance
, a. Existing Conditions
i ~
Maintenance in the area of the proposed project is presently provided
by Spokane County and by private property owners. Th,is involves primaril'y
the repair and improvement of the County road system. The existing package
sewage treatment plant serving the first phase of the project has not re-
ceived all necessary approvals and is maintained by the developer. '
~
As the proposed project site is undeveloped at this time, no mainte-
nance activities occur on the project site at the present time.
b. The Probable Impact of the Proposed Action
The proposed project will result in the dedication of a road system
of approximately five miles of paved roadway, requiring a corresponding
increase in maintenance by Spokane County. The water system serving the
development would be maintained by the Model Irrigation District.
The existing package sewage treatment facility will be expanded to
serve the entire development. It is anticipated that when the system re- ~
ceives all necessary approvals that a maintenance and operation agreement
wiil be executed with Spokane County giving the County responsibility for
the maintenance of the system. The County in turn will collect user fees
to offset the maintenance and operating costs of the system
c. Measures to Mitigate adverse Impacts ~
Any lncrease in maintenance costs necessitated by the proposed project
would be mitigated by the addition of new tax r,evenues and the imposition
of user fees.
d. Unavoidable Adverse Impacts ~
The proposed project will result in an increase in the,malntenance of
utility and transportation systems serving the development,
5.6 Other Governmental Services
No significant impact on other, governmental services is anticipated. ~
6. Energ
a. Existing Conditions
At the present tlme the area of the proposed project is serviced with ~
electricity and natural gas by the Washington Water Power Company.
122 ~
~
b The Probable Impact of the Proposed Action
~ Construction of the proposal would consume energy, mainly in the form
of fuel for construction equipment. As tracts are developed, energy com-
rm tments would include the use of electrical energy for heating, lighting,
cooking and other domestic activities; use of natural gas mainly for home
heating; and motor fuel for commuting and other transportation of residents
and customers.
~ It is estimated that the fully developed proposal would consume ap-
proximately 250,000 therms of natural gas and 1.5 to 2.0 million kilowatt
hours of electrical energy per year. These estimates are based on current
averages for new construction as indicated by the Washington Water Power
Company which would serve the project. Insulation standards set by HUO
would be adhered to, but since they are no more rigorous than local prac-
~ tices, no incremental energy saving is expected. The Washington Water
Power Company indicates that current energy sources are adequate to serve
this proposal and other anticipated growth in Spokane County.
Traffic generated by the proposed project would also represent a signi-
ficant increase in the amounts of fuel consumed as a result of the project.
~ The rate of use of motor fuel for private transportation is in large part
dependent on commuting distances from residential areas primarily to work
locations but also to shopping, recreational, cultural and other facilities.
Full regional shopping facilities are located within 2.5 miles of the pro-
ject site. Numerous entertainment, recreational, cultural and educational
facilities are located in the Spokane-Spokane Valley area.
~
c. Measures to Mitigate Adverse Impacts
The proposed development could employ innovative conservation measures
which would result in reductions in potential energy cons,umption. The
requirement for plan revTew by the developer will result in the opportunity
~ to incorporate construction design features to obtain greater efficiencies
in the utilization of energy resources. The following measures are recom-
mended:
(1) Adequate insulation in roof, walls, and ceilings to reduce heat
transmi ssi on.
~ (2) Use of high performance furnaces that can recover waste heat from
flue gas or those with a flue shut-off.
(3) Use of heat retaining fireplaces or wood stoves.
(4) Use of high-performance air conditianing units (if absolutely
necessary for climate control) with open air cycles.
(5) Provision of storm windows and storm doors.
~ (6 Provision of windows that can be opened and closed.
(7 Use of tinted glass in windows.
(8) Double glass windows.
(9 Use of landscaping on the south and west sides of the buildings.
(10 Provisions for screens, shades, and curtains.
(11) Well-ventilated attics.
~ (12) Use of dark colored roofs.
(13) Use of flourescent rather than tncandescent lights.
~ 123
~
In addition to the above measures, orTentation of housing units can
save heat costs by collecting the maximum amount of solar heat through
the day. The util ization of these measures Ts prsmarily at the discretion
of the individual home 6uilders or buyers. ~
d. Unavoidable Adverse Impacts
The proposed project will result 1n new demands for energy consumption
in the area. ~
7. Uti1 ities
~
7.1 Energy
See Section 6 above on Energy.
~
7.2 Communication
Telephone services will 6e provided to the a-rea 6y Pacific Northwest
Bell Telephone Company v7a underground n tT1TtTes.
7.3 6aater ~
a. Existing Conditions
The project site is not presently served with water. There are private
wells near the project site that are used for irrigation of nearby agricul-
tural fields. It is proposed that the project site be annexed to the Model ~
Irrigation Dlstrict. Model has indicated its intent to annex the project
site subject to certain improvements to be made by the developer.
b The Probable Impact of the Proposed Action
The proposed project would result in an increase in the consumption of ~
water to serve the residential development. The estimated quantities of
water consumption from the project for domestic and irrigation purposes
are discussed above in the section on Ground Water. The District has indi-
,cated that it plans to install a new well withln the proposed proJect
site.
~
c. Measures to Mitigate Adverse Impacts
The location of any new wells on the project site should take into
careful consideration the proximity and location of the proposed sewage
treatment drainfield. See the section on Ground Water above for a more tho-
rough discussion. ~
d. Unavoidable Adverse Impacts
None
~
124 ~
~
7.4 Sewer
~ The impact of the proposed sewage treatment system proposed for the
project is discussed in detail in the section on sewage treatment facilities
above. '
7.5 Storm Water
~ The method of handling storm water and its probable impacts are dis-
cussed above tn the section on Surface Water Runoff and Absorption.
7.6 Sol id Waste
~ a. Existing Conditions
Ua11ey garbage service provides solid waste disposal services for the
Spokane Valley area. The waste is disposed of at the Spokane County
operated sanitary landfill at Mica, Washington.
b. The Probable Impact of the Proposed Action
~
It is estimated that the proposed project will generate approximately
1,100 tons of solid waste per year when fully developed. It is anticipated
that this solid waste would be disposed of at the Spokane County managed
sanitary landfill at Mica. According to the Spokane County Engineers
Department the Mica Landfill has an estimated life of 10 to 12 years at the
~ present time.
c. Measures to Mitigate Adverse Impacts
None.
Q~ d. Unavoidab=le Adverse Impacts
The proposed project will result in the need to dispose of about 1,100
tons of solid waste per year.
8. Human Health
~
Issues of human health are addressed in the sections on ground water
quality and public services (schools). The project site itself does not
pose any specific hazards to human heal th.
9. Aesthetics
~ N/A
10. RecreatTOnal
P1 ease refer to the section on pu61 ic services (parks
~ 11. Archaeological/Historrcal
The project site is not identified as having any unique-or specific
archaeological or historical significanceo
~ 125
~
CITATIOPIS
1. Drost, D.Vt., Spokane Valley-Rathdrum PraTrTe Aqu1fer, Washinqton and
Idaho, U.S. Departmentrof the InterTOr, Geological Survey, Open File ~
Report Number 77-829, 1978,
2. Newcomb, R,C., Seismic Cross Sections Across the Spokane Riv er Uallex
and the Hillyard Trougfi, Idaho and WastlTngton; U.S. Geological Survey,
Open Fi 1 e Report, 1953, 16 pages.
3. Ibid. ~
4. Drost, D.W., o, cit.
5. Ibid.
6. Ibid. ~
7. U.S. Army Corps of Engineers, MetropolTtan Spokane Re5ion tlater Resources
Study: Surranary Report, 1976. -
~
8. Drost, D.41. , op. ci t. ~
9. Ibid.
10. Ibid.
11. Ibid. • ~
12. U.S. Army Corps of Engineers, op. cit.
13. Crosby, J.W., III, Johnstone, D.L., and Fenton, R.L., Migratlon of Po11u-
tants in Glacial Outwash Envlromnent, Pa rts I-III; Water Reso urces Re-
search Vol ume I H, 1970, l ~
14. Crosby, J.W. III, Johnstone, D.L., and Fenton, R.L., Migr3tion of Pollu-
tants in Gl a'cial Outwash Environment, Par`t III, Water Resources Research
Volume III, No, l, pages 204-208, 1970.
15. Crosby, J.W. III, Johnstone, D.L., and Fenton, R.L., o. cit., Parts
I-III. ~
16. U.S. Army Corps of Engineers, o. cit.
17. Crosby, J.W. III, Johnstone, D.L., and Fenton, R.L., op. cit., Part I
pages 204-208.
~
18. Drost, D.W., o. cit.
19. Safe Orlnking Water Act, Public Law 93-523.
20. 43 Federal Register 28, pages 55-56; February 9, 1978.
~
21. 40 Code of Federal Regulations 149; September 29, 1977.
126 ~
~
22. Drost, DQW., op. cit.
23. Ibid.
~
24. Esvelt, L.A., Interim 4Jater Qual i ty ManitorYnq Report, Spokane County
208 Program, Spokane County EngTneers OffTCe, February 1978.
25. Ibid.
~ 26. Esvelt, L.A., o, cit.
27. Drost, D.W., o. c1t.
2$. Esvelt, L.A., op. cit.
~ 29. U.S. Army Corps of Engineers, op. ctt.
30. Ibid.
31. Spyridakis, P.E. and bJelch, E.B., "Treatment Processes and Environmental
Impacts of VJaste Effluent Disposal on Land", Land Treatment and Disposal
~ of Municipal and IndustrTal Wastewater, R.L. Sanks and T. Asano, editars;
Ann Ar6or Science, Ann Arbor, M1chTgan; 1976; pag es 45-83.
32. Ibid.
33. Sopper, W.E., "Use of the SoTI Uegetative Biosysten for Waste Water Re-
~ cyc1 ing", Land Treatment and DTSlaosaT of MuniciQal and Industrial Waste-
water, R.L. Sanks and T. Asano, edYtors; Ann Arbor Science, Ann Arbor,
Michigan; 1976; pages 17-43,.
34. Ibid.
~ 35. Crosby, J.IJ., III9 92. cit.
36. Spokane Area Development Council, Percentage Chanqe 1n Popula tion,
Spokane County 1940-1976, 1976.
37. City Plan Commission, City of Spokane Population 1880-1990, 1976.
~ 38. Ibid.
39. Ibid.
40. Ibid.
~
~
~ 127
~
aPPErIorx g
~
~ SECTiON 1
CHEMICAL QUALITY OF GRQbPJD WATER FROM WELLS
' IN THE VICINITY QF THE PROJECT SITE
~
Tabl e Notes :
1. Nationai Interim Primary Orlnking Water Regulations (U.S. Environmental
Protection Agency, 1975).
~
20 hlational Proposed Secondary Water Regulations (U.S. Environm ental Pro-
tectlon Agency, 1977).
3. Spokane County "208" «aste Water Managenent Program Prel iminary Field
Data Results.
4. Spokane County 11208"_Naste Water Management Program, Preliminary Washington ~
State University AnalytTCal Resulits,
5. Department of Sociai and Health Services.
6. Environmental ProtectTOn Agency. ~
7. Washington State Department of Health.
8. United States Geological Survey/Bureau of Reclamation.
9. Pacific Laboratory of San Francisco, CalTfornia. ~
10. Pittsburgh Testing Laboratory.
~
~
~
128 '
~
CWLh11GAl QUAUTY 0r GaOUtIOWATER
SAI4PLC SITE NUMBER 25/44'29aI
SITE IOCATION Wl! Carner. 20th 8 Ualfour (11I11`24)
Dalo Date Deplh Water SppcifiC , pU Turb(dity Threshold Dissolved Dissolved Dissolved thrQness AisSOlved Qissolved Uissolved Tnta) Tntal Ta~al 'clai
Sourte ~ Sampled (Ft ) Tenip- Canduet- (units) (JTU) Odor 5tlica lron Manqanese (Ca,mg) Chloride FluoriEe Sulfate Ntl.rdte Nftrile PhoS 0155GIred
eratut e ance Nuuiber (S1 0 ) (fe) (Pin) (ng/L) (CL) (F) (SO ) (PI) (I+) (w0 ) Solie,
_ (°C) ~ (u-n irs) Img~~l (malL) (m9/i) (my/1.) (mq)i ) 1mg/L1 (n~~/l.) mgIC) ,~~ll.
Standai d
Primaryl- 5 2 0 Ifl A
5ecnndary 2 (6 5 ar 3 0 3 05 • 250 U - 250 0
)8 5
208F3 12/07177 9 n 35f1 8 n - I58 I 3
3 411
-
znaa 10/26i77 g n mn 6 6 ian 6 i ~ a 4
208F 1nJ03/77 lA n 360 fi 9 - 214 6 A q y
,2081' 7/05/17 9 0 385 Q 178 fi 1 3 fi • •
?OAF 6/14/77 9 p 375 fi 5 - - 119 5 Q 4 0 - -
~
r~ 1081J4 6/06l11 281 112 7 4 A A 1 7 02n ?17 4
~ OSH55 9/14/71 350 0 f1 7 0 b 5 16 f115 168 1 5 il iq 5 I 9 n11 % 119n
pSHS 9/23/72 340 7 7 6 n 10 tf lf► 012 731 5 5 Arl 21 5 2 5 Olfl f15 241
DSIfS 7/17/12 368 tt 11 ] p (1 26 003 idR 11 5 lA 9 tl 1 4 043 lq 192
ASNS 6/16/72 320 19 5 Q 2 bn 18 0f13 176 65 113 18 7 2 1 013 f1 192
ASIIS 5/11/11 16 A 310 0 1 34 0 23 6f) Ob 041 178 6 Q 18 19 2 3 1 018 47 235
QSNS 4/18/72 300 8 n 1 p 7 5n nq (1 172 3 25 13 12 2 I 52 n22 12 155
USNS 3/31/12 340 1 8 1 3 A 1 Q 36 003 112 3 5 138 lA 6 I 62 112 12 193
DSIIS 2/14/72 340 8 7 6 0 4 5n 42 n06 200 5 n 138 12 0 4 2 112 nx 191
A5U5 1/18/72 330 A 3 4 n 1 5n 18 n lBR 5 5 145 13 0 2 9 436 41 192
DSIIS 12/13/71 330 1.8 b A 5 14 036 232 A 5 12 9 3 3 Q n57 23 238
QSHS 11/15111 350 ,7 h R n 7 5A 04 n03 2An A 5 099 l B 3 3 n58 0 220
DSHS 10/13/11 34Q 1.9 1 Q n 12 f1 142 fi 5 117 11 2 3 0 f127 ~ 11 202
D5115 9114/11 384 7.9 52 n 4 54 n ang 14fi 6 5 105 lfi B 28 qqq 05 220
DSIIS 9/23J70 10 0 125 8 0 1 0 tl 0 a 14 006 142 3 0 110 5 5 3 2 034 ls 199
CIIEMICAL OWLITY OF GROUNDWATER
Sllf4{'LE SITE NUMDER 8/44-11A1
SIIE LOfATION 10g lialfour Park
Oata Date Uepth blatei Specific pN Turbidity ThreShold Dissolved Dissolved Dissolved Nardness Dissolved Dissolved Dissolved Total Totai Total Totai ~
5ource Sampled (ft ) Temp- Conduct- (units) (JTU) Odor Silica lron Manganese (Ca,") Chl,oride Fluoride Sulfate Nitrate Nitrite phos Dissolved
~
eraturt ance Number (S QZ) (Fe) (Mn) (-og/L) (6) (f (50 ) (N) (11) (POp ) Soltes
(units) (m9/L) (Ri9/L,) (m9/L) (In9~1) 1in9~1f (mg/L) (m9/L) (m9A. (m9/li
Standard
Piimat y r - 5 - 2 0 10 Q
Setondar)2 0.5 or 3 0 0 3 05 250 0 250 0
)8 5
208f 11/29/1? 0 11 5 400 6 3 18U 1 0 3 5
208F II/29/71 b 11 5 365 6 3 164 6 4 2 9 s
208f 11/29/77 12 1,1 5 255 6 5 146 3 0 2 6
208f 11/29/77 22 11 5 250 6 5 142 1 9 2 5
208F 11/29/77 49 11 5 265 6 5 122 1 1 2 1
20841 10/13/17 0 12 0 375 6 9 196 6 1 2 5 197 3
w
0 7^"~ 10/13/71 0 2 A
20814 10/13I17 0 12 A 375 198 b 1 13 5 2 6 186 3
2084! 10/13/77 U 2 4
708b! 10/13/11 10 12 D 300 6 9 llb 3 1 13 0 1 8
i
20814 10/13/71 25 I 56
208F 10/13/17 25 12 0 215 6 9 152 2 0 1 60
2011F 9J14177 3 ~2 03
208P! 9/14/17 3 11 5 335 6 9 126 2 0 13 0 1 6
208f 9/14/17 12 146 2 0 2 0
208td 9/1'4117 72 1 54
208F 9/19/17 22 ? 0
ZUBW 9114/17 22 1 60
208U 9I14/17 30 140 2 2 1 8
208F 9114117 12' 11 5 285 G 8 144 2 2 2 0
208( 9J14/77 22 11 b 710 G 1 142 1 8 2 q
109F 9/14J17 30 11 Q 265 6 9 138 1] 2 4
2QBf 9/14/17 45 9 5 250 6 8 128 I'4 2 6
~
cIicnicnL -Quni irr or ceauNnunrGR
sAnPLr sttr NutIaEn 25/44-17RI
SITE LACATIAPI 20R Balfour Park (can't )
~ . .
1..
ata Date Depth Weter Specific pll Tw bidily Th►esliold Dissolved Aissolved Oissalved liiidness Dissolved Discolvecl Afssolved Tntal Tota) Tntal Tola
Sourte Sampled (ft ) Tenip- Conduct- (unSts) (JTU) fWar Silrca lion rlanqanrse Ca,u~') CI,1oHde fluortde Sulfale WStrate qiLrite nhos Disso ~eG
erature ance Nunibei (SIo1) (re) (Mn) ~i►9/L~ (CL) (F) (SO ) (14(I1) {PO ) Snli_=
( C) (imits) (uig/l~ (~~9/l) (m9/l) (mgll) (mg L
(mgA finf9~L) (w9/L) (n!y/L)
Standard
Priaiaryl- 5 2 0 10 {1
Secondar ~
y - <6 5 m 3 n n 3 nti - 250 A 250 0
5n~~
)B 5
208W 8/04/7I 0 17 0 250 6 6 128 1 9 11 0 1] 105 0
208N 8/04117 0 1 32
20AF 8/04/17 1 211 144 7 4 2 78 '
208f 8/04/77 5 220 ~ 132 6 3 1 60
20nW ~ 8J04/77 6 1 46
209F 8/04/77 6 12 0 295 6 1 154 2 I 1 qU
208F 8/04/77 12 11 5 265 6 6 136 17 1 gp
~ 20$!! 8/04/77 20 ,
-r 124
208F 8/04/77 20 11 0 250 6 2 124 1 A 1 84
2Ugr 8/04/77 25 230 136 5 3 1 QS
20811 B/nn/n 45 ~ 1 23
2A8f 8/04/77 45 11 0 250 G 5 128 1 S 1 60
208F 8J04/77 5Q 216 ~ 124 3 2 1 29
20811 1/01/I7 Q '
1 90
208W 7107111 0 12 0 308 6 A 146 3 2 11 0 3 tl 119 0
zoaw 7/07r77 o z 27
20814 7/07/77 6 11 0 260 6 6
208f 1/07/77 12 11 0 252 6 7 136 1 a 1 9
20841 1/07/77 142
208F 7J07/17 22 11 0 260 6 7 138 2 4 1 90
208f 1107117 22 110 140
208F 7/07/17 42 11 0 250 6 A 126 1 9 1 80
2084! 5/26/17 22 232 132 2 2 12 0 I 41 105 0
~ 2084! 5/18/17 3 232 120 2 2 11 0 1 18 105 0
CHEI4ICAL QUAl1TY OF GROUtdOWATER
SAMhI[ SITC NUMqCR 75/44-26L1
SfTE LOGAT1014 [orner Adams and 24th (Vera nn 4)
~
Data Date Depth Water Specific ptl Turbidily Threshald pissolved D9ssolved Dissolved Hardness Dissolved Oissolved Dissolved Totai Total Total ToCal `
Source ' Sautpled (ft ) Temp- Conduct- (units) (JTU) Odor S71ica Iron Mangaoete (Ca,mg) Chlurrde Fluoride Sulfate Witreke Nitrlte Pbos Dissolved
erature ance Number (5 02 ) (Fe) (Mn) (ngJl) (CL) (F) (SO ) (N) (R) (PO ) Solics (°C) (units) (m9/l.) (m9/~) lmg/L) (mg/U (m911) (mg/~) I~~9/U (~~9/l) ;n~J/~) (Mg1'-)
Standar,d~ p p ll1 0
Primaiy 5
Secondary 2 0.5 ar 3 Q (I 3 05 150 0 250 0 - - 5(i' i
)0 5
208F 11/01/77 fl/A lA 0 425 0 6 5 108 0 3 3 3 4 '
209F 10/n5/71 IIIn 9 5 420 0 6 R 216 n 3 9 3 5
290F 8/25177 N/n 95 410 n 6 7 206 0 3 1 3 3
708F 1/13/77 N/A 10 Q 400 fl G ti 186 0 1 5 3 2
208F 6/14177 tl/ll ln n 36n n 6 4 186 A 2 8 3 2
w 208W 6103171 t!/A 302 A Ol lRA n 3 2 12 0 2 44 nI 714 3
N OSHS 9/30114 43R n 1 7 Il 19 f1 411, 18n 6 4 1 32 A 20 r~~r 06 2011
EPAb 9/14/72 350 7 1 0 ln nn2 183 2 n A 13 0 2 3 012 olA 223
ASHS 9/14/12 326 b 8 0 55 06 nn6 182 4 0 2 26 A 2 I 046 02 lAA
DaliS 8123/72 332 1 9 1 II n 06 M3 232 3 0 6 28 0 1 1 019 01 215
ASNS 7/11/72' 380 1 9 0 1 J 14 At19 id0 10 A 1 14 0 19 004 11 195
DStIS 6/1q/72 326 R`n n 55 211 IlA9 192 A 0 1 25 A 2 0 p17
D5HS5121i12 11 tl 200 8 0 n 11 0 n2 n6n 136 3 0 1 11 0 I 7 02 134
p5i15 4/18/72 324 I 9 0 4 S Ol n 208 2 5 1 23 I 4 la ?riA
D5f15 3/31/72 310 7 9 1 0 14 Of1i 112 2 p 1 23 r 4 011 ltil
DSIIS 2/14/12 140 8 2 A 7 5 lb , 006 264 2 5 2 22 11 A pll 0 254
OSIiS 1/11/72 310 tS 9 1 7 5 n6 Q15 200 5 0 I 14 2 4 032 26 247
DSHS 12l13/11 326 7 1 0 6 4 3n A09 164 52 I 17 2 8 049 16 171
DS!!S 11/16/71 346 7 7 1 2 5 22 006 118 3 n 1 18 2 9 042 1 0 186
D511S 10/13/11 340 78 ' n A 112 029 17x 6 tl 1 3n 2 6 007 119 196 DSNS 9/14/11 310 ) 3 Il 2 5 04 Il03 244 1n Q 1 20 2 7 015 pq 260
~
DSNS 8/09/11 340 7 G A 5 n 20 fl 156 7 5 1 19 2 3 033 11 188
OSUS 11/04/70 ln o 340 1 6 I 7 5 n tlQb 114 3 a t 18 3 1 q p 21? ~
, -
~ ~ ~ ~ • • ~ ~ ~ ~ ~
CIIEMICAL QUIILiTY OF GRtIUNDWATER
~AMPLC SITC NUMDLR 25/44-2611
SiTE LOtATtArI Coruet Adams and 24th (Vera no Q)
1
Oata Date Deplh Water Specific pH Turbid►ty Threshuld Dissolved Dissolved Dissolved Mardness Dissolved Dissolved Dissolved Total Total Total Total ~
Source Saiiipled (ft ) Temp- Cnnduct- (units) (JTU) Odor Silica lron Manganese (Ca,m ) Chloride Fluo1'ide Sulfate t~itrote Plttrlte Phos U155o'vet
eratuie ance Nuniber (5 0 ) (re) (Mn} (ng/l? (CL) (F) (50 ) (U) (tl) (PO ) Solics ~ (1,C) (un,ts) finq/?l Img/L1 (mg1t.) (mglL) (mg1L) In►91fl (m91L) OWl) ;myl@l (mgl.)
Standard ,
Primary l- 5 . . 2 0 10 4 ;
Secondary2 <6.5 ar 3 p A 3 05 250 0 250 0 sf1n
)S 5 ,
W511tt7 I01+171fA 11 3?6 0 3 n 18 n nq nn5 192 2 Z 2 12 z 2 003 ll - '
VI9q0$ 3/()?!64 la 37n l 6 n 20 0 n4 nn2 I66 i Q 2 12 5 1 005 62 188 ;
f,SI3R 6/-/51 i 261 • - 159 3 4
~
c
I
i
W
W '
1
E
1
~
I
CIICMICAI QUAL(1'Y OF GROUN041ATER
SAMPLE 5I1E NUMIi[R 25.144-71?)l
SITE LOCATIOt~~~l-Cnrngr, 16tb & Pierce (Fbdel na 1) -
1 Data Date Depth 4later Specific pN Turhidity Thresnold Dissolved Dissolved Dissolved Nardness Dissolved Dissolved Dissolved Total Total Total 1at- i
Source Sampled (ft ) Temp- Conduct- (units) (JTU) Odor Sillica Iron Manganese (Ca,mg) Chloride Fluoride Sulfate tlitrate 111 tri te Nhos Dissc ec
erature ance Numlaer (51 U ) (Fe) (~4n) (ng/lJ (CL) (F) (SO ) (N) (1) (FO ) Sali
(°C) (untts,) (nl~) (mg/L) (my/L) (mqlL) (m9/l.) Img/t) Gn910 (mg/l.) (m9A) 1a,.
Standard ~
- • . 2 q
y ~ 5
Secondar;2 (fi 5 or 3 0 0 3 05 250 Q' 250 0 ~n
)8 5
i ~
'
lSf 6/10174 12 p 259 7 S Ol 0 132 1 tl 1 8 0 2 2 028 114
OSHS 5110/11 260 8 A 3 0 6 25 OII Q 132 3 5 081 18 8 2 55 QlA Ofi 161
W
~
CNEM1CAl QUALITY OF GROUpDWATEA
~ SAM'lE SiTC NUMBER 25/44-2811
SITE LQCAT(ON tltl Cmner. 6t R Bowdi h(Model Np 2)
Data Oate qepih Water Specific pll Turbidiry Threshold Otssolved Dissolved bissolved 4iardness Dissolved Aissolved Dissolved 1ota1 ToCal Ta•al "otaf
Source Saiiip led (ft ) Tenip- Conduct- (units) (JTU) Odor Sillca Iron Manganese (Ca,i ) Chloride Fluoride Sulfate t) itrate Nlirite Pbcs Gissoired
e~o~?~c Ance (uNumber nits) ((~~~9i.)1 I 1~% 1(ng/L) (g/~l 1~~! 1 1(~5~~.)J {~~q%I ~(r,~l (?5a) Solids
~ ( ~J ) (Itltlll ) ( 5/ )
Stondard
Primaryl- 5 . 2 0 1D 0'
;nn t
Secondary2 (6 5 or 3 0 A 3 05 250 0 250,0
)8.5
D511S 5/10171 215 8 p 4 0 3 0 34 10 194 6 25 68 19 6 3 43 035 09 219 0
~
W i
Ln
~ i
I
I
(.IIEMICAL QUAI.ITV OF GROUN01lhTER
SAMPI:E SfTE NUMBER 25744 - 12N1
SfTE LOCATION q Ii 8Llauk Streets (tlodern no 7)
nata Date Depth 4laler Specific pN Turbidity Threshold Oissolved Ihssolved Dissolved Ilardness Dissolved Dissolved pissolved Total Total Tolal Tnta
SourLe SaioNled (ft ) Temp- Gonduct- (unks) (J1'U) Qdor Silica iron Manganese (Ca,mq) Chloride F,lunride Sulfate Nifrate Nitilte Phos Oissnlred
erature ance Number, (S Q ) (Fe) (Mn) (ng/L} (CL) (F) (SO I (N) (I) (I~0,q ) Solid~
{units) (~~J/i) G~1~) 1u►9/L1 (~~9/~) (ni9/L) (uu~/4; (mg/~~) (m9/~) I~ug/~j (m9/0
Standard
. . . - -
Rrimaiy~ S - 2 Q 10 0 -
Secondai--- <6 5 or 3 0 0 3 05 250 0 250 0 5
)B 5
DSIIS 1102175 N/A 211 0 1 9 2 q n 24 nl 160 0 2 n 4 13 2 1 7 ,24 01
uSNS 511217r) N/n 232 0 a 1 28 n 2n n • 84 0 4~a 036 G 1 1 44 126
PTLPIO Z - 220 U 7 8 - 10 Q lA 115 C 1 8 4 1 2 0 154
~
w
oA
'
0 0
CHEMICAL QUALITY OF GAOUtIDWATER
SAMPIk S(TE NUMBER 25/44-2711
SITE LOCATIO" Corner 22nd & Vercler (F1WP 2-5)
Oata Date pepth Water Specific pN Turbidity Threshold Oissolved Dissulved Oissolved Nardness Oissoluecl Dissolved Dissolved Total Total Tc:al "otal
Saurce 5ampled (fr ) Temp- Gonduct- (um ts) (JTU) Odor Silica Iron 14anganese (Ca,mg) Chloride Fluori0e Sulfate Nitrate Nitrite P,.cs :15501VCtI+
eraturc ance Fawnber (s~oz ) (FQ) (Mn) (ngJl) (ci ) (F) (so ) (14) (r) (F3Q) ;ul tdl
(°C) (units) '(mg/~) (mg/L) (mg/L) ;m9/l) (mg/L) (m9A) (mg/L) (mg/L) (mg/L) (mg/L)
StandaM ~
primaryi _ 5 2 0 10 0
Secondar)2 < b 5 or 3 0 0 3 05 250 0 250 0 5nn n
)8 5
OSHS 5/30/75 358 A 1 4 IG 6 25 0 196 5 A 3 15 A 1 4 M 0 Q
DSHS 5/11/70 8 9 323 8 2 23 n 20 n 1 35 n 138 4 0 10 1 2 275 024 15 189
~
w '
v
,
~
I
~
~
i
CHEMICAL QUAL11Y OF GROUtlOWpTER
SAMI'LE SITE NUMBER 25/44-28P1
SITE LQCAT10P1 MW Corner 30th 6 Pierce (Mutlel No 3)
AatA Date Depth Water Specific pII Turbidity lhreshol0 Dissolved Oissalved Dissolved Hardness Dissolved Dissolved Dissolved Tolal Total Total Total
Source Sampled (ft ) Temp- Conduct- (units) (,iTU) Odor Silica lran, h1anganese (Ca,mg) Chlaride Fluoride Sulfate Nitrake NitritelPhos Dissolved
erature ance Number (S~O2~ (Fe) (Mn) (,ng/l) (Cl) (F) (S04) (11) (I ) (PO ) So~lids
(°C ) (un9 ts )qJl ) (m /l fmq/l l t~~9/~ ~ Im9/L) (nuglL) G~~9/LI Ini91LI(m9/~ ) (m9lL)
_jm Standa rd -
.
Primar,y r 5 . . - = 2 0 10 0
Secondar)2 0.5 or 3 0 0 3 05 250 Q 250 Q 5rin ~
, >8 5
DSH~ 5/10/71 368 i3 0 3 0 5'n lfi 0 1q4 3 0 15 17 7 3 3 034 15 20r 0
J
Mw
W
CIIEMiCAI QUALITI' pf GROl1ND41ATER
SAMPIE SiTC NU140ER 25l44-29A2 ~
S(TC LOCATIOti ll!! fAlIle, , 201h G Oalfour (14IP 2-1)
Dala 1}ate Uepth blater Spen Fic pN Turbydily Threshold Dissolved Dissolved Dissolved Nirdness Dissolved Dissolved Dlssolved Total Totai Total Totat
Source Sampled (ft ) Tetup- ConducC- (uniis) (JTU) `Odor Silica, Iron Manyanese (Ca,~g ) Chloride Flunride SulFate Hitrate Plitrite Phos Oissolved
erature ante Nuinl~er (5102) (F,e) (Fln} (ng/L) (C1) (F) (5'0q ) (W) (tt) (PO ) So11ds
(°c)
(units) (mI/~.) (mg/L) (m9/L) (mg/L) (mg/L) 1In9/L) (mg/L) (mg/L) ~ntg/l) (fli91l )
Standard
Primaryi- 5 - - Z 0 10 0 -
Sscundar).2 (6 5 or 3 0 p 3 05 - 250 0 250 0 500
)8 5
osils 9/23/70 10 0 125 n n 7 A A 75 14 At)6 142 3 0 103 5 5 3.1 027 36 199
DSIIS 9/11/7n 10,0 400 7 5t q n 75 n 009 206 21 0 135 28 B 6 9 04 38 309
~
w
~
,
~
CUEMtCAI'QUALITY OF GROUNDWATER
S1IMPLE S11'E NUM9ER 25/44-28R1
SITE LOCATJON NW Carner. 32nd & Pines (NF1P 2-2)
Data Date Oepth Water 5pecific pli Turbidity Threshold Dissolved Dissolved Oissolved Ilardness fJissolved Dissolved Oissalved Total Total Tota,l 'ct2
Source Sampled (ft ) Temp- Conduct- (units) (JTU) Odor Silica iron Manganese (Ca,mg) Chloride Fluoride Sulfate Nitrate Nitrite Phos Dissc ed
e~ac,re anCe ~u^uit ) `(m9/~,) 9% S ~m9/L) (,09/L) ~~C91~~ y/L) (i~!/~) G~9/l) (o►9/l) ImJk) (fli9/J
5tandard
Prtmaryl- - - 5 2 0 10 0 -
Secondar)2 , <6 5 or 3 0 0 3 05 250 0 250,0 _ SQr~ z
>8,5
DSNS 9/15115 317 I 8 1 0 15 B 20 A 260, 1 8 0 15 4 5 3 , 07 18
DSHS 9/14/71 380 8 2 44 ,0 4 n 04 fln9 324 16 o 074 19 5 4 3 '017 30 335
~
~
0
I `
CHEP11CAl QUAUTY OF GAOIaNnWATER
SAMPIE SITE fJUMBER 25/44-21E1
SITE IOCJITION SC Corner, 22nd Ext S Piees (1indern no 4)
Uata Date Uepth ldater Specific pH TurbidFty Threshold Uissolved Dissulved DSssolved Wirdness-Dissolued Djssoived Dissnlved Tatdl Totai Totdl Total
Sourte 5ampled (ft ) Temp- Condutt- (units) (JTU) Od'or Sflica lrun Manganese (Ca, ) Chlnnde Fluor►de Sulfa4e Nitrate NiLrite PBos Dissoiveci
erature ance Number (S D2 ) (Fe) (Mn) (i1g/~ (CL) (F) (SO ) (N), (ti) (f~0 ) 5n1 ids
_ (°C) (unlts) (~1/~l (mJ/l.) ~nn~J/L) Iii~J/l ) (ntq/L) (iuy~-) (n►y!L) (mg/L) .~u_9/el OnglL7
Standarg . . ~
Prlmary~~ 5 2 0 ln 0
-
r (6.5 or 3 0 tl 3 05 250 0 - 250 0
Setonda ~
) 2 )8 5
248F 11/1/77 'tl/A 11 D 34A Q 6 1 162 A Q 1 35
208F 10/4/77 p/A 11 rl 35n n 6 9 11A n 4 1 2 9
2481J 10/4/77 IIIn 11 0 219 A fi 9 C tA f1 168 A 1A 2 13 0 2 6 C Ol 118 3
206F 8/25/77 A/A 11 q 345 A 6 2 170 n 4 2 3 4
208F 7/06/71 II/A 11 0, 340 A 7 2 166 n 1 9 3 6
~
4~b 208f 6/14177 II/A 11 Q 330 Q f, 9 1o;3 n 3 81 33
J i
~DSNS 5/11/15 PIlA 312 A 1 9 4 12 0 16 - IlZ n 6 5 1 lb 7 2 8 OJ 01 176 4
nSHS 9/14/72 11/A 300 0 7''i 1 A 6 5 1n nnfi 152 n 5 0 117 19 8 1 91 f11 161.13
ASNS 8/23/72 tl/A 276 0 7 8 53 n q A 04 nnn I12 n s n 32 21 5 1 6 011 02 172 A
DSIIS 7117/11 tl/A 304 A 7 3 6 Q 22 n 38 OnG l40 0 11 5 lA 13 8 1 9 036 10 185 A
05NS 6/19/72 11/11 20 B A 4 n 11 1 nl IQA n 5 n 135 19 1 1 62 016 171 n
oSNS 5/11/72 N/A 12 6 284 A a 15 , 0 14 I 14 nna 170 0 4)5 088 14 3 2 55 016 08 164 n
DSNS 4/1q/12 H/A 260 A 1 2 1 n 5 0 12 Qn3 2nA 0 092 18 3 35 026 32 223
D511S 3/28/72 q/A 250 0 1 A l Q 1 ro 22 nn3 157 n I 5 p96 27 2 1 Q 012 06 156
ASNS 2/16112 11/A 234 fl 1 9 1 2 n 4 n 10 nni 144 fl 2 25 055 14 5 1 68 054 35 138
USuS 1/17/72 N/A 30Q fl I! 2 7 Q 1n 1106 152 Q 14 5 145 15 0 2 5 818 17 102
ASIiS 12/14/11 tl/A 300 0 8 0 41 n 2 0 f118 144 A 27 5 092 13 1 2 7 05 13 178
OSNS 11/16//1 N/A 276 Q fi 5 8 0 5 n Jn nf19 148 4 n 062 13 0 3 1 044 141
DSIIS 10/14/71 IIlA 284 0 7 a 91 n 9 H 12 nD9 158 n 8 25 064 16 8 3 13 002 194
DSNS 9/14/71 fl/A 384 0 7 A 3 I) a ri 2f) r1n6 248 n 9 n 071 16 8 14 004 16 244
DSNS 9/2q/74 f1/A 10 0 260 0 7 6 4 fl 12 50 003 168 0 3 25 074 14 8 2 27 012 14 140
+
i
~
~
~
APPENDIX 6
~
SECTION 2
GROUND IdATER QUALITY DATA
FROM VARIOUS AQUIFER CROSS SECTIONS
~
~
f
~
~
~
~
142 ~
WATEit QUALITY AT VARIOUS AQUIFER CROSS SECTIONS
N. City Outlet Springs
State Line Opportunity_ Parkwater Limits and Welts
Conductivity, mho/cm
Mean 278 302 260 294 336
Std. Deviation 21 32 26 46 155 ~
No Samples 61 10 103 31 42
Hardness, mg/1 as CaC03
Mean 154 155 141 151 198
Std, Deviation 16 19 19 28 39
No. Samples 61 11 90 32 40
Chlorides, mg/1
Mean 0.81 1.82 1.49 2,54 7.82
~ Std. Deviation 0.30 1.22 0.44 1.15 4.71
w No Samples 61 11 90 36 40
Nitrate-Nitrogen,mg/1
Mean 1.27 1.60 1.65 2.08 3.33
Std Deviation 0.31 0.51 0.32 0,56 1 48
No. Samples 61 71 91 30 39
Alkalinity, mg/1 as CaC03
Mean 121 130 111 156
Std. Oeviation 7 16 13 18
No. Samples 14 16 26 3
Sulfate, mg/1
Mean 12.6 12.4 12.4 17.1 28.4
Std, Deviation 2,2 2.6 2,8 6.6 18,3
No. Samples 16 19 32 4 12
Sod i um, mg/ 1
Mean 3 10 4.58 3.35 4.23
Std, Deviation 0,33 1.64 0,41 0,06
No. Samples 15, 16 26 3
Source: "208" Field Data
Aquifer Gross-section Conductivity flardness Chloride Nitrate Sulfate
(micromhos) (mg/L CaC03) (mg/L) (mg/L) (mg/L)
STATE LINE
Idaho-Trent 263 148 ,82 ,92 9,6
Idaho-C I 0. 298 149 1.08 1.26 11.7
Idaho-Beck 283 148 .85 .62 14 2
~
~
Average: 281 148 .92 93 11,8
1U.S.G S.
2"208" Field Data
~ 0 0 e) 1* 0 is
~ ~ ~ _ ~
Aquifer Cross-section Conductivity Hardness Chloride Nimra`e S~m~~l}
(micromhos) (mg/L CaC03) (mg/L) ( 9/ )
OTIS QRCHARDS
Campbell-Euclid 310 186 1,12 1.24 14.5
Campbell-Mission 200 101 .86 ,84 10.0
Average, 255 143 0-99 1.04 12.2
~
Aquifer Cross-section Conductivity Hardness Chloride Nitrate Sulfate
(mi cromhos ) (mg/L CaC03) (mg/,l ) (mg/L ) (mg/L )
OPPORTUNITY
Balfour Park 290 146 3 0 1.50 12,1
Ualley Mission Park 303 161 1,5 ,92 15.1
Irvin 284 151 1.7 11.10 10.4
~
o,
Average- 292 155 2.1 1.2 12.5
~ ~ 0
• ~ ~ ~ ~
~ ~ ~ ~ a 40 0 4 p 0 0
Aquifer Cross-secti on Conducti vi ty Hardness Chloride Nj trate Sul fate
(micromhos) (mg/L CaC03) (mg/L) (mg/l) (mg/L)
EAST CITY LIMIT
(Parkwater)
WWP Substation 264 151 1,2 .92 14.0
SCC 215 151 1.9 1.40 12 7
~ Central Pre-Mix 244 128 1.6 1.20 11.5
v
Mi lwaukee No. 2 249 136 1.9 1.40 11•2
Average: 257 141 1.6 1,2 12.4
Aquifer Cross-section Conductivity Hardness Chloride Nitrate Sulfate
(micromhns) (mg/L CaC03) (mg/L) (mg/L) (m91L)
NORTII CITY LIMIT
Arl ington 306 147 2,1 1.4 17.0
Landitll 381 257 1,1 3.9 25.3
Whitworth Test 386 201 3,3 2,4 20,5
~
-
00
Average; 360 244 4,4 2.6 20.9
~
~
~
APPENDTX B
~ SECTION 3
WATER QUALITY DATA FR01d1
DEPTH-SEL-ECTIUE GROUPJD WATER SkTES
~
~
•
~
♦
~
149
~
~
WATER QUALITY FROM DEPTH SELECTIVE GROUND WATER SITES
~
Ground Glater ldentifier Sampling Sampling Conductivity Dissolved Dissolved
Site Number Date Depth (micromhos) Chloride Nitrate
(mq/L) (mg/L)
Idaho-Trent 26/46-30D1 77-,05-17 134 - •S •9
138 - .9 • 9 •
145 - •9 •9
141 - 8 •9
160 - 1.0 .9
185 - .8 •9
. ~
77-10-17 138 300 .7 -
143 275 .7 -
148 270 7 -
173 275 i 0 -
198 270, .7 -
~
~ Idaho-CID (1) 26/46-31M6 77-10-18 129 310 1.2 -
134 310 1.1 -
139 305 1.0 -
154 285 1.0 - ~
179 280 1.1' -
•
~
•
~
150 ~
i
WATER QUALITY FROM DEPTN SELECTIVE GROUND WATER SITES
~ Ground Water ldentifier Sampling Sampling Conductivity Dissolved Dissolved
Site Number Date Depth (micromhos) Chloride Nitrate
(mq/L) (m4/L)
203 Valley 25/44-9P1 77-05-18 65 - 1.3 .88
~ Mi,s s i on 68 - 1 7 1.0
Park 71 - 1 6 1.0
75 - 1.5 .88
gp _ 1.4 1.0
~ 77-10-13 65 310 1.0 _
70 320 5 1
-
75 325 1.1
100 300 1.1 -
' 125 310 1.2 -
~
Campbell- 25/45-5R1 77-10-13 78 350 1.0 -
Euclid 83 375 1.1 -
88 - - '
103 275 1.4 -
~ 128 250 1.0 -
Campbell- 25i45-8R1 77-10-77 103 200 .8 -
Mission 108 200 .8 -
113 195 •9 -
~ 128 200 •8 -
153 205 1.0 -
~
~
~
151
~
~
WATER QUALITY FROM DEPTH SELECTIVE GROUNO WATER SITES
~
Ground 4later ldentifier Sampling Sampling Conductivity Dissolved Dissolved
Site Number Date Depth (micromhos) Chioride Nitrate
(mq/L) _ (mg/L)
208 Balfour 25/44-17R1 77-05-18 77 - 1.6 1.2 ~
Park 76 - 1.6 1.2
79 - 2 6 1.4
83 - 2.4 1.4
98 - 4.7 1.5
118 - 1.5 1.3
~
77-08-03 70 309 1 7 67
74 312 1 6 .94
88 310 1.7 1.1
114 360 1.8 1.2
~
77-08-05 70 258 2.2 1.2
74 249 1.8 1.2
88 254 1.8 1.3
114 256 1.6 1.3
- - ~
77-10-13 77 375 6.4 -
82 350 5 8 -
87 300 3.1 -
92 275 1 9 -
113 250 1.7 -
~
•
~
~
152 ~
~
VIATER QUALITY FROM DEPTH SELECTIVE GROUND WATER SITES
~ Ground 4later ldentifier Sampling Sampling Conductivity Dissolved Dissolved
Site Number Date Depth (micromhos) Chloride Nitrate
- (mqlL) (mqIL)
Milwaukee 25/43-14L1 77-05-31 54 - 2.1 1.4
~ No. 2 64 - 2.0 1.4
79 - 1.9 1.4
104 - 2.0 1.4
77-10-12 56 260 1.8 -
~ 61 260 1 8 -
66 2,60 1.9 -
81 265 1.8 -
101 265 1.7 -
~ 2'08 Irvin 25/44-09C2 77-05-19 93 - 1.7 1.2
98 - 2.1 1.1
99 - 1.8 1.1
104 - 1.8 1.1
119 - 1.6 1.1
~ 144 - 1 6 1.1
77-10-13 97 310 2 2 -
102 300 1 8 -
107 298 1 3 -
~ 122 300 1 2 _
147 298 1 3
~
~
~
153
~
~
WATER QUALITY FROM DEPTH SELECTIVE 6ROUND WATER SITES
~
Ground 4later ldentifier Sampling Sampling Conductivity Dissolved Dissolved
Site Number Date Depth (micromhos) Chloride Nitrate
(mq/L) (mg/L)
Spokane 25/43,1OP2 77-05-24 39 - 2.2 1 5 ~
Community 42 - 1.9 1.4
Col'1 ege 45 - 1.8 1 5
49 - 1.8 1.5
64 ~ 1 9 1.6
' 92 - 2 2 1.5
~
77-10-12 40 260 1.9 -
45 260 1 8 ~
50 - 2.1 -
65 260 - -
95 265 1 7 -
. •
Central 25/43-14E1 77-05-26 66 - 1.6 11.2
Pre-Mi x(4) 69 - 1.7 1.2
72 - 1.6 1.2
76 - 1.6 1.2 •
91 - 1.7 Z 2
116 - 1.8 1.3
77-10-11 71 211 1.4 -
76 211 1.4 - ~
81 211 1 5 -
96 211 1.4 -
121 211 1 4 -
•
~
~
154 ~
~
WATER QUALITY FROM DEPTH SELECTIVE GROUND WATER SITES
~ Ground 4later ldentifier Sampling Sampling Conductivi,ty Dissolved Dissolved
Site Number Date Depth (micromhos) Chloride Nitrate
(mq/L) (mq/L)
Land Fi11 26/42-27F1 77-05-25 70 - 7 6 3.5
~ 76 - 7.5 4.0
79 - 7.5 4.0
83 - 7.3 4.0
97 - 7.0 4.0
128 - 6.2 3 5
~ -
77-10-10 75 530 7 6 -
~ 78 510 7 4 -
81 510 7 2 -
85 520 7.4 -
100 510 7.0 -
~ 116 480 6.1 -
4lhitworth 26/43/7G1 77-10-11 111 420 3 6 -
Test 116 390 3.3 -
~ 121 - 3,. 2 -
123 365 3.2 -
Arlington 26/43/28Q1 17-10-18 205 350 3.3 -
~ 210 310 2.6 -
-
215 305 2.6
225 285 2.3 -
235 280 2.7 -
~
~
~
~ 155
~
~
APPENDIX C
I-JASTE 4JATER TREATMENT OPTIONS ~
~
~
•
•
~
~
~
,
156 ~
~
LJASTE WATER TREATMEPIT OPTIONS
~
INTRODUCTION
The choice of the most environmentally and economically sound waste
water treatment system can be a dlfficult declsion. A niamber of variables
must be considered: a quall1ty and fate of the final effluent, capital and
~ operating costs (including potiyer consumption and maintenance requirements),
a real requirements, quantity and characteristTCS of sludges generated, as
well as state and local regulatory restrictions. This paper will dlscuss
the available options with respect to these variables. Specifically, the
following options will be explored: on-site treatment and disposal,; and
small (less than 1 million gallons per day, MGD) Ynterim treatment facili-
~ ties. Exhaustive description of these options is not feasible here, but
the information presented should allotv one to understand the theory,
strengths and limitations of each of the systgns dlscussed.
GENERAL THEdRY
~ The point of traditional waste water treatment i,s to reduce the concen-
tration of certain corumon pollutants and to disinfect the resulting effluent
if human contact with the discharge could result in diseast transmission
Pollutant concentrations in the rnfluent sewage are removed by two basic
mechanisms: physical separation and bi°ological conversion of remaining
constituents. Physical separatTOn most commonly involves retaining waste
water in a large basin and providing for the renoval of both settlable and
floating solids. It can also involve the filtering of waste water through
porous media such as sand or soil.
The primary aim of biological conversion is to convert organic matter
to less detrimental forms. Oxygen in recei,vTng waters Ts depleted by the
~ biological degradation of excessive concentrations of organic matter. For
this reason the concentration of organic matter in waste waters and treated
discharges is usually measured Tn terms of five day biochemical oxygen
demand (6005). Organic matter is primartly camposed of car6on, hydrogen
and oxygen; with lesser amounts of nYtrogen and phosphorus, and trace amounts
of other elements.
~ Biological conversion of canstituents which renain suspended in the
waste water is commonly mediated by microflora and microfauna. This process
can proceed in the presence of o3c,ygen (aerobic treatment). Alternatively,
oxygen may be absent (anaerobic treatment).
~ The anaerobic conversion of the major constttuents is shown below in
general terms:
Eq. 1 Organic matter ~ Organic acids + biomass (sludge) 30-
Methane (CH4) + water (H20) + Biomass (sludge)
~ Eq. 2 Organic Nitrogen P.- Ammonia (NH3) + Biomass (sludge)
~ 157
~
Eq. 3 Organic Phosphates P-Orthophosphate (P04 4) + Biomass
( s1 udge )
The aerobic conversion proceeds as follotvs: ~
Eq. 4 Organic matter + Oxygen (0 ) v- Carbon Dioxide (C02) +
Water (E1 20) + g1omass (sluige)
Eq. 5 Organic Nitrogen v- Ammonia (NH ) + Oxygen (02) '10'_ ~
Nitrite (N02) + Biomass (sludge) + &ygen (02) Y
Nitrate (N03+) + Biomass (slndge)
Eq. 6 Organic Phosphates Orthophosphates (P04+) + 6iomass
(sludge)
•
Note that the organic carbon Ts converted to either methane or carbon
dioxide, both of whlch are gasses with relatively low solubility in water
They are, therefore, released to the atmosphere. Although ammonia is a gas
it is more soluble and remains in the water at high concentrations either
as a dissolved gas or as arimonium (NH ions. PJitrate, nitrite and phos- ~
phates are also soluble. Therefore, ander normal operating schemes, the
only significant nutrient (nitrogen and phosphorus forms) removal is that
associated with sedimentation (primary settling) o r biomass removal (sludge
wasting). There are biological and physical-chemical methods for more com-
plete nutrient removal (nitrification-denitriflcation, ammonia stripping,
coagulation-flocculation, etc.), but these tertiary treat.ment methods are
outside the scope of this paper. `
Generally, aeroblc treatment proceeds much more quickly than anaerobic
treatment, therefore, aerobic treatment facilities require less reactor
volume. If the process is aero6ic, the essentlal oxygen may be provided by
mechanical aeration or by algae photosynthesls. Mechanical aeration necessl-
tates increased capital costs, maintenance, and power consumption. •
To retain the necessary concentration of active mic roflora and micro-
fauna in the biological reactor, this active sludge may be settled from the
effluent and returned to the aeration basin. Alternatively, the sludge may
settle to the bottom of large ponds (stabilization ponds, lagoons) and under-
go sloti anaerobic digestion. The required biological populations may be ~
maintained on fixed filters o r rotating biological fiiters. The process may
even be carried out in the soils of agricultural or forest lands irrigated
with waste water.
After waste water treatment, it is necessary to dispose of (or use)
both the treated effluent as well as the resultant organic and inorganic ~
sludges. The organic portion of the sludge is biodegradable, and can be
reduced in volume by further biological treatment. In large installations
it is usually economically feasible to "digest" the sludge in separate units
(anaerobic or aerobic digesters). Separate digestion facilities are seldom
included in smaller treatment systens. Because dlsposal of undigested (raw)
sludge poses both aesthetic and human health concerns, the problem of sludge ~
0
158 ~
~
production is handled differently. Often the sludge is held in the treatment
facility for much longer periods of time. Extended sludge detention times
allow the sludge to undergo endogenous respTratTOn (i.e., the blomass con-
~ sumes itself). Thus, greatly decreased sludge volumes are experienced
This reduction in sludge volume is gained at the cost of reduced nutrient
removal. Both nitrogen and phosphorus forms are released to the effluent
It should be recalled that in the absence of special tertiary nutrient
removal systems, the amount of nutrTent removal is roughly proportional
to the amount of sludge created and renoved (wasted) from the system.
~
Sludges are generated 1n various quantitTes by all treatment facili-
ties. Extended aeration facilYtles, desYgned to minimize sludge production
wi 11 eventual ly begi n to di scharge sludge Tn the effl uent i fit i s n,ot
removed in some other way. Sludges are normally conveyed to landfi]ls or
applied to croplands. Care should be taken to characterize the chemical
~ and pathogenic character of the sludge before deciding how best to dispose
of it. European practices have included composting sludge vrith leaves,
c rop residue, and organic so1Td waste. Sludge uses rn the United States
have included heat treatment, packaging and marketTng sludges as so11 builders
and using sludges to reclaim open p1t mining operations.
~ Treated effluents may be handled in several ways. The effluent may
be allowed to evaporate, discharged to surface waters or subsurface drain-
fields, or applied to suitable croplands, pastures or forested areas. A com-
bination of these disposal methods is also feasible. Each method has
potential environmental, health, and economic implications which should be
evaluated on a case 6y case basis to determine the wisest choice.
~
ON-SITE WASTE WATER TREATMENT
On-site waste wa ter treatment refers to individual faciiities which
treat wastes from single households. This category lncludes dry, chemical,
~ and composting,toilets; single household lagoons; drywells; septic tanks,
and aerobic treatment units.
The use of dry, chemical, and ~omposting toilets, is often limited
to dwellings without running water. This regulatory approach is necessi-
tated by the potential occurrence of pathogens in grey water. Grey water
~ is waste water generated from baths, showers, sinks, clothes washing, etc
Because dwellings with running water qenerate substantial grey water flows,
the installation of a system to handle these waste waters is required.
Installation of a separate,dry system for black (toilet) wastes is seldom
economically desirable. BECause the use of dry systems is presently limited,
they are not discussed further.
~ Use of dry wells for grgy water disposal is allowed in Spokane County
under certain circumstances. A dry well is an excavated column constructed
in a manner to prevent soil from filling the excavation, while still allow-
ing dispersal of the water into the surrounding soil. The drywell is not,
strictly speaking, a treatment facility. It is rather an inexpensive method ,
~ for dispersing low strength wastes.
.
159
40
~
I
The most common on-si te treatment fac r11 ty is the septic tank. The
septic tank consists of a container wTth one or several compartments de-
~signed to provi,de anaerobic treatment of waste water. Tt should retain ~
both floatable and settlable solids, and provide for the`digestion of
these sludges so that pumping is required only once every two to five years.
Minimum septic tank volume i's 600 gallons, while average volume is about
1,000 gallons. A typical design is shown in Figure lo
•
Figure 1
Typicai Sept~rc Tank4
[ JS~tLl.T11~3
VORl'S
INLLT7n i
OIRi £T
SCIAJ
r
i LIQUID
-_WFGESTI,G SLlT1GF
Within the septic tank the suspended organlc matter is converted to ~
organic acids. This "produces a somewhat offepsive anaerobic effluent well
suited to aerobic treatment by soil bacteria". After extensive field and
laboratory testing of septic tanks, Otris et a16 note "septic tanks can be
characterized as producing an e,ffluent very high in BOD and total su spended
solids. The survival rate of fecal coliforms is also Rgh. Median values
of the field units vary between approximately 90 mg/1 and 290 mg/1 for BOD5 ~
and 35 mq/1 and 135 mg/1 for total suspended sotids." Although individual
septic tanks vary widely in efficiency and effluent quality, Table 1 sum-
marizes available data characterizing anaerobic septic tank effluent
Table 1
Septic Tank Effluent Characteristics •
Effluent Characteristics Percent Removal
BODS (mg/1) 10.5-150 30-50
TSS (mg/1) 50-135 50-70 ~
NH3-N (mg/1) 25-35
NO 2-N (mg/1) 0.2-0.5
NO -N (mg/1) 0.01-0.5
Orianic - D (mg/1) 5.6-10
Totai N (mg/1) 30-50 0-35
PO -P (mg/1) 20-35 ~
Total P (mg/1) 8-40 0-25
Fecal Coliforms (#/ml) 1300-5500
Adapted from references 6, 7, and 8.
160
~
~
Nitrogen in septic tank effluent rs about 80 percent annonium and 20
percent organic nitrogen. Al though ammonTa is eff7ciently retained by
~ soil particles, much of the ammonium Ys nitrified to nitrate (NO ) by soii
bacteria. Witrate is highly mobile in drainfielGs and poses a p3rticular
threat to ground waters. The conversion and fl ux of ni trogen forms i s
dTscussed below.
The primary function of a septic tank is to provide an effluent which
~ wi ] 1 not cl og or overl oad the dra rnage f iel d. For thi s pu rpose they f uncti on
well with minimal malntenance, provided they are pumped as re4uired to pre-
vent the wholesale flushing of solids to the drainfield. Typically, the
collection system, septic tank and drainfTeld operate on gravity flow elimi-
nating the necessity of punps, which additionally decreases maintenance and
operation costs.
~ Recently the use of aerobTC units to replace septic tank functions has
gained some credence. There are two basic types of aerobic units: batch-
aeration systems and continuous flow systems. A typical batch-aeration
system consists of a single tank whlch acts both as an aeration chamber and
settling chamber. A centrifugal 6lower injects air into the tank fo r 18
hours and then shuts off early in the morning to allow the tank solids to
• settle. A submerged centrifugal pump olscharges the supernatant from the
tank after a 5-hour settling time and the cycle repeats. The continuous
flow units typically contain a trash trap for primary solids whic h acts as
a small septic tank. This is followed 6y an aeratTOn chamber with a mechani-
cal aerator and a f i na 1 settl i ng chamber with a gravi ty sl udg,e retu rn .
These units operate in a manner similar to extended aeration package plants.
~ A typical continuous flow unit ts shown Tn Figure 2.
Figure 2
Typical Continuous-Flow Aerabic Unrt4
~ Ili31+ECTlOPI
POA'CS
L~r .
I4l,ET ~ ~ :
Olr!'LET
~ SCl'fl , 0- -
0 ISI4iFPt'l'l0Y
~ Td% K
9E7TL [ tG
_ Pt1E . AEMTIGV
S£7TLIVG S~,(ME -0RE: tlltV
, .
`A1R 01FFlJSOR
~
Problems have been experienced with aerobic units. Otis, et ai16
note, "Aerobic units are capabl e of much higher degrees of treatment than
~ septic tanks, but periodii upsets cause greater va riability in effluent
quality". Bennett, et al suggest that aerobic systens which are typically
~ 161
~
designed ta retain waste waters for one to two days may be underdesigned in
that they fail to handle waste water surges. Another reason for disappoint-
ing performance is homeowner neglect. Both pumps and aeration units must be ~
serviced and solids must be removed more frequently than is necessary with
septic tanks.
The increased servicing costs, power costs and higher capital costs
makes the aerobic units even less attractlve. Power consumpt6on for most
units ranges from 3 to 7 kilowatt hours per day. Otis, et a1 make the ~
following cost comparison.
Table 2
Cost Comparison: Septic Tanks and Aerobic Units*
Septic Tank Aerobic Unit S
Equipment Costs
Tank, control panel, etc. (25 yr, life) $200 $750
Aeration equipment (10 yr, life) 150
Installation
Operation Costs (Power) 275 350 ~
tlaintenance Costs (including pumping) 36/yr.
Total Annual Cost 54 203
*Amortized at 8 percent, 1973 dollars.
As these authors note6, "The computation of total annual costs show ~
that aerobic units become competitive with septic tanks, only if surface
discharge is allowed." Effluent quality is improved over septic tank ef-
fluent. It is doubtful, however, that suffTCient effluent quality is
maintained to prompt regulatory agencies to allow su rface discharge. State
law (WAC 248-96-050) specYfically prahibits the discharge of effluent from ~
on-site treatment facilities to sugface waters or upon the surface of the
ground. Effluent 60D is reported ranaing from 25 mg/1 to 55 mg/1 with a
mean of 30 mg/1. Tot~l suspended solids removal is no better than that
achieved with septic tanks. Effluent fecal coliform concentrations are
much lower, but still above levels typically a1lowed in discharges to sur-
face waters. ~
Because the option of discharge to surface waters is closed to septic
tank effluents, use of a satisfactory drainfield is essential. The drain-
field distributes the effluent to the soil where aerobic soil bacteria de-
grade the organic matter in the effluent. The presence of very porous
oils, poorly drained soils or shallow ground waters can limit or exclude ~
the use of drainfields and therefore septic tanks.
Highly porous soils (sands and gravels) allow waste water to pass
quickly through the biologically active so11 fractTOns and percolate to
ground waters with relatively little renovation. Poorly drained soils,
particularly those with substantTal clay fractions, pass waste water slowly
and can clog quickly. Soils with intermediate permeability (sandy loams •
and silt loams) provide both adequate retention and adequate permeability
162 ~
- r
~
to both percolate and treat waste waters. Historically, the percolation
test has been used to determine the adequacy of soils for drainfield place5,1.,11,12
ment. But reliance solely on thrs criteria has 6een seriously questioned
~ Generally, however, it is possi6le to construct adequate draTnfields in
medium porosity soils of sufficient depth which lie on relatively 1eve1
terrain. Sizing and construction techniques are of great importance if a
drainfield is not to clog and ultimately fail. Scarring and compressing
trench walls can drastically lower initTal permeabillty. In addition, or-
ganic overloads (usually caused by inadequate siZTng) create anaerobic con-
• ditions in the percolation bed. This quickly leans to bacterial build up ;r
which further loaiers permeability. In addition, anaerobid conversions re-
sult in the precipitation of sulfides of tract metals (particularly Fe5) which
further clogs the drainfield.
Substantial treatment of septic tank effluents occurs in the soil
~ column as the waste water percolates through the soYl. Aerobic soil bac-
teria efficiently degrade organic matter. Tf anaerobic conditions develop,
organic degradation is retarded and leads to the clogging problens discussed
above. The soil particles efficiently filter suspended solids, and the
organic fraction of these solids is also degraded by soil bacteria.
• Nutrients are present in ionic form in septic tank effiuent. They are
also degraded from organic to ionic form by the breakdown of organic matter.
Phosphates are retained in soils by a combination of adsorption, ion ex-
change, and precipitation reactions. SoTg phosphate movement can, however,
take place in old or overloaded systens.
Nitrogen forms are involved in a rather more complYCated systen of bio-
]ogical and chemical reactions. As noted previously, most of the nitrogen
in traditional septic tank effluents is present as ammonium. Aerobic septic
tank effluents, on the other hand, contain primarily nitrite. Nitrate (an
anion) is very mobile in percolation waters, while amnonium (a cation) is
retained strongly by soil particles. A group of aerobic soil bacteria (the
~ nitrifiers including Nitrosomonas, Nitrobacter, Nitrococeus, etc.) can
effi ciently oxi dize arrmoni um to ni trate freei ng i t to move wi th the perco-
lation waters. This hiological conversion proceeds much more quickly when
soils are warm and biological growth rates are high. Theoretically there
are two routes by which nitroqen may be at least temporarily removed from
the drainage system waterso (1) If local anaerobic microhabitats exist in
46 the drainfield, nitrogen may be denitrified to nitrogen gas or gaseous nitrous
oxides. (2) If the rQOt zone of overlaying vegetation penetrates the drain-
field, nitrogen in both nitrate and arrgnonium form may be taken up by the
vegetation and recycled in the topsoil.
although little information appears to be available on the efficiency
~ of these mechanisms, it is probable that they are much less effective in
reducing drainfield nitrogen than they are in reducing the ni,trogen content
of waste waters applied to spray irrigation projects. This is apparent for several reasons. FTrst, drainfield effluents are inJected 14 to 36
inches below the soil surface. This places then out of the most biologically '
active soil horizon, the topsoil. In addition, the root zone for many cover
~ crops (1.e., grass) does not extend to these depths, thus vegetative uptake
is diminished. Finally, and probably most impo rta ntly, drainfield applica-
tions are not carefully controlled and typically cover crops are not har-
~ 163
` ~
~
vested. Thus, neither are optimal condYtions for denitrification main-
tained, nor are the nitrogen forms taken up by tFie cover crop ultlmately
removed from the system. ~
Soil systems do not generally retain anions including, in addition to
nitrage, chlorides, sulfates and bTCarbonates. These anions move with the
d rainage waters and pose a potentTal for ground water contamination.
If drainfields are designed and operated correctly there is virtually ~
no odor. If, however, drainfields are overloaded, anaerobic effluent can
surface and create substantial odor pro6lems.
There are three major types of drainfields: the traditional narrow
trench systems, mound systens, and evapotranspTration (ET) systens.
The mound systems are used when ground water exists close to the soil ~
surface. The absorption field rs raYSed above the natural soil level by
using clean, med7um sand. This renoves the seepage trench from wet, slowly
permeable subsoil and spreads the applTCation of effluent to a greater area.
Mound systems may be designed to Tnduce evapotranspiration. They g4n there-
fore be considered a special type of ET system. StudTes in Oregon found
mound disposal systens acceptable Yf a publlc agency at the county level or ~
below had responsibility for all operation and maintenance of the systens
and if area was reserved for the construction of a replacement bed.
A modification of the narrow trench systen is specified? for use in
Spokane County. DispersTOn pipes are laTd Tn trenches 18 to 36 inches wide
filled with crushed rock. The distance between the top of the pipe and ~
the finished grade ranges from 14 to 36 inches. Construction of drainfields
on lands with greater than 15 percent grade are not allowed except on a
case by case basts.
Location of piping below the frost line in northern climates can place
seepage below the biologically active so11 mantle and minimize evapotranspir- ~
ation. Failure of drainfields is usually linked excessive loading due to
insufficient sizing of the drainfield, failure to consider speclfic soil
conditions or campaction of trench walls. Overapplication leads to anaerobic
conditions. Anaerobic slimes, ferrous sulfide precipitation and sedimenta-
tion further degrade drainfield conditions. These problens can be overcome
by operating techniques including drainfield systems which allow alternate ~
1 oadi ng and resti ng of the soi].
INTERIM SEWAGE TREATMENT FACILITIES
Aerobic, secondary treatment plants have two major advantages over ~
on-site sewage disposal systens. Waste water is centrally collected and
treated and effluent quality is improved making surface or subsurface water
discha rge less objectionable. These advantages are counter-balanced by
disadvantages which include increased comp]exity and power consumption. It
is important that small treatment plants be both dependable and relatively
simple. Most problems encountered in small treatment plants a re related to ~
the lack of skilled and knowledgeable maintenance and supervision. In
addition, small plants are served by shorter sewerage lines in homogeneous
164 ~
~
~
developments. These plants are therefore subject to both hydraulic surges
and waste load shocks.
~ Jones15 notes four important characterYStres of a small sewage
treatment plant:
1. Plant operation should be relrable without continuous skilled
supervision,
2. Plant must operate efficiently under a variety of flow condittons,
~ including organic and hydraulic shock,
3. Plant should not generate large volum es of solids for subsequent
disposal, and
4. Plant should not generate excessrve odors.
ACTIVATED SLUDGE SYSTEMS
~
Early in this century, Brltish researchers noted that a sludge de-
veloped in aecated, clarifTed raw sewage. AddYtTOnally, they noted that
if substantial amounts of this sludge were edded to waste water, the organic
content of the waste water decreased rapldly. Later, it was confirmed that
this sludge consisted of a complex community of bacteria and other micro-
~ organisms which formed a flocculant sludge which actively consumed the
organic constituents of sewage. Treatment systems which make use of this
"active sludge", which is mixed wlth incoming waste waters in an aeration
basln, are referred to as activated sludge systems.
In all activated sludge systens, this biological sludge is settled
~ from the aeration basin effluent and returned to the aeration basin to
treat additional incoming waste water. A portion of this settled sludge
is "wasted" from the system.
The ratio of incoming organic waste to the amount of activated sludge
i n the aeration basi n i nfl uences tfie rate of organ Tc degradation. Thi s
~ ratio is often referred to as the food-to-mYCroorganlsm ratio and is ex-
pressed in lb, of incomjng BOD per day per pound mTxed liquor volatile
suspended solids (MLVSS) i'n thi aeration tank. ThYS ratio is strongly
related to a second operational parameter: Mean cell residence time (A„).
A is the number of days which an average micro6ial cell is retained in'
tfie systems prior to wasting. It is determined by dYViding the mass of
~ MLVSS in the system by the mass of sludge voiatile solTds wasted daily.
These parameters must be regulated by the onerator to maintain good control
of the process. The primary means of regulating the process is by careful
control of sludge wasting rates.
Perhaps the most conanon symptom of process upset is sludge bulking.
~ In its most general sense, sludge bulking refers to the failure of acti-
vated sludge to settle p,roperly in the secondary clarifier. This can, in
turn, lead to excess suspended solids concentrations in the effluent which
may exceed permit limitations if the plant discharges to su rface waters or
~ plug drainfields if subsurface discharge is employed. In addition, MLUSS
concentrations in the aeration basin may decrease, further aggravating the
~ situation. Sludge bulking can occur for a number of reasons incTuding in-
~ 165
~
appropriate food-to-microorganism ratios, shock loading, insufficient
nutrients in the raw waste waters, anaero6ic condTtions in the secondary
clarifier, or excessive mean-cell residence times. ~
Table 3, adapted from Tehobanoglous'lwork16, gives typical ranges
for the operational parameters discussed a6ove. Additional parameters
are included. Among these are volumetric loadrng and hydraulic detention
time which allow one to estimate the size (volume) of aeratlon basin required
for a given application.
~
Tabl e 4 provi des comparison of effl uent qua 1 i ty ,from acti vated sl udge
and septic tank optTOns discussed here. It Ts clear that properly operated
, interim waste water treatment plants provide an effluent quaTity much im-
proved over septic tank effluents. Considera6le caution should be exercised
in reviewing the treatment efficTency tables as individual applications show
wide variations in effluent quality depending on design, operation, incoming ~
waste water characteri stics, and otFier var,labl et.
CONVENTIONAL ACTIVATED SLUDGE
Although the conventional activated sludge process is not commonly
employed for small plants, several modifrcations of thTS process are often ~
used. These modifications lend themselves to being housed Tn what are often
termed "package treatment plants", although the term "factbry-fabricated
plants" might be more appropriate, since the process and detention times
should be selected specifically for the process, flow conditions, and sew-
age strength in any given location.
~
A simplifled flow-chart of the conventional and modified acfivated
sludge processes is presented in FTgure 3.
In addition to the unit processes noted tn Figure 3, incoming sewage is
communuted and passed through a grit chamber where heavy, abrasive solids
are removed. Secondary settled sludge Ts often routed to a sludge thickened ~
to decrease the size of sludge pumping and handling appurtenances. Oigested
sludge is often dried using vacuum filters, centifuges screen presses or
sludge drying beds to decrease the volume of disposed sludges. Effluents
are chlorinated prior to surface water discharge. The number of unit pro-
cesses, the care required to mafntain process stability, and the necessity
of digesting and disposing of large volumes of slu dge make conventional ~
activated sludge an unattractive option for small plants.
EXTENDED AERATION
The extended aeration modification eliminates the primary settling
requirements and reduces considerably the production of excess (was'ted) ~
solids which makes it a desirable small plant option. 4laste`water is screened,
communuted and then passed to a relatively large aeration basin where it is
held and aerated for approximately 24 hours (compare to a typical detention
time of two to six hours in conventional activated sludge). The active
sludge is then settled from the aeration basin effluent and returned to the
aeration basin. P1ean cell resjdence times are greater than in other acti- ~
vated sludge options. This leads to the self-digestion of sludges within
166 ~
Table 3
TYPI CAL DESIGN DATA FOR ACTi I VATED SLUDGE PROCESSESa
PROCESS
ITEM OONVENTIONAL OONTACT EXTENQED AERATED OXIDATION
OOM PLETE-MIX. STABILIZAT'ION AERATION LAGOONS DITCH
Mean cell residence time, 6-12 6-12 20-30 10-30 20-30
9, days
Food-to-micraorganism ratio,F/M 0,2-0,4 (0,2-0,5)b 0.05-0,15 0,05-0.2 0.03-M0
Ib. DOD/Ib. MLVSSfday
Volumetric loading 50-100 30-80 10-25 60-70 10-20
~ Ib, BOD/1000 cu. ft./day
oN -
v
Temperature coeffi'cient, Q 1.0-1,02 1,0-1.02 1.06-1.09 1.06-1.09 1.06-1,09
Mixed liquor suspended'solids 2000-5000 1000-3000b 3000-6000 2000-3000 3000-8000
MLVSS, mg/l (4000-10000)c
Volatile fractfon of MLUSS 0.7-0.9 0.6-0.9 0.6-0.8 0.6-0.8 0.6-0,8
Hydraulic detention time 2-6 0,3-0e5 b 18-36 0,5-5 0,5-4
A, hr, (3-6)c (days) (days)
Recycle ration 0,25-1.0 0.25-1.0 0.5-1,5 0,25-0,75 0,25-0,75
a) From Tchobanoglous, 1975.
b) Contact unit.
c) Solids stabilization unit (sludge aeration tank)
Tabl e 4
Estimated Performance Data for Alternative Waste ldater Treatment Processesi
Constituent
SS -6005 C00 N NN3 P
IncamingUaste Water
225 200 450 40 25 10
Effluent From Treatment Process
~ Activated Sludge
co Conventional 20 15 90 35 22 8
Extended Aeration 20 115 90 5 9~ 25 2~ 7
Contact Stabilization 20
Septic Tanks 50 105 30 25 8
lAdapted fram Tchobanoglous (1975) 16; under ideal conditions; values expressed in mg/1.
~ '
A
~ :igu.re 3. Sc bivazca Sl..dge O=i-
oas
Conventional Act3.vatec Sladge
I:►f? sent flueaL ~
~
imax-y A eraIt :,;n zeccndas-y
Settll~ :zs:m SetLl:r;g
. A .
~ ?e ~~:r_ ~ ~j ~ va•~
Sludge
- ,
Ectarnal
Sludge Waste Acti•rated Slt..dge
Digestion~ ~
40 .
~ _ - Dikested S1udEe ~
~ J
E.~ctended Ae."ation
sflu,ent Efflctsnt ~
Seco~ar)
~ Aeration Settling
Ba93,Sz
-Nr
t Patl a+ A :~i~~e~ ~luC~
~
i
~ jRa•:_ j_ s ~ a A~ Zv_ated ~
S ~ ka~e
Coc.1,6.ac~ Sta:;2 3 an
~r►^L~ %-econcar.y
Contac~ ~
iartk :e- tl~ g
A
:.lu~be 1 s .v
a
~ JIllde'8 ~ Pa ,..w% ,,'P o
-:.:z n
scbs
~ 169
~
the aeration basin (e.g., "endogenous respTration"), usually eliminating
the need for external sludge digestlon facilities. This leads to a fully
nitrified effluent with virtually no nutrients removed. Extended aeration ~
s]udges possess mediocre settling characteristTCS. Bulking and solids loss
in the effluent are potential problens. Solids are typTCally pumped from
the final clarlfier daily or every other day. These sludges are raw and ,
thus pose a public health concern. They are often Fiandled like septic
tank sludges.
Based on theory of operati on, extended aeratfon i s very simi 1ar to the ~
aerobic septic tank process which was earlTer described.
Extended aeration facilTtles are relatTVely immune to shock loading
as long aeration basin detention tTmes tend to provrde hydraulic and or-
ganic load equalization. Power requTrenents a re somewhat greater than for
conventional activated sludge due to the ex,tended aeration times required. ~
The plant itself has little odor potentTal hUt the dTSposal of sludges may
pose potential odor problems.
The terms "extended aeratTOn" and "pa`ckage treatment plant" are
essentially synonymous in Spokane County; and extended aeration facilities
are widely used for subdTVisTOns, apartment complexes, condominiums andl ~
smaTl l, rural towns. Effluents can be dYSCharged to either surface waters
or subsurface drainfields, and both options are emp,loyed in Spokane County.
The presence of a ful ly nltrYfied effluent (e.g., all, or nearly all, of
the nitrogen in the effluent is present as nitrate) may cause concern when
subsurface discharges may pose a threat to ground waters.
. ~
CONTACT STABILIZATION
Contact stabilization is a modification of the activated sludge pro-
cess which attempts to mTnimlze the time whTCh sewage Ts retained in the
treatment process. The theory responsT6le for this modification holds that
the stabilization of organic wastes Ts accomplTShed in two essentially ~
discrete steps. First the suspended and dlssolved organic matter in the
waste water are absorbed by the sludge floc. Subsequently, these absorbed
organics are oxidized by the organTSms a nd converted to both energy and
cellular material. In the aeratlon basin of conventional activated sludge
systems both processes occur organlc material is absorbed, oxidized and new
cells are formed. Contact stabilizatYOn isolates these processes. Du ring ~
the "absorption phase",comminuted colloidal, finely suspended, and dissolved
organics are absorbed to the activated sludge. This takes place in a contact
tank (see Figure 3). The sludge and a6sorbed organics are then settled from
the effluent flow and routed to a"sludge aeration tank"'. Here the thickened
sludge is aerated for three to six hours. Accumulated o rganic matter is
oxidized and metabolically assimilated. Sludge cells multiply. The sludge ~
is then returned to the contact tank to abso rb mo re organics.
The treated sewage is retained for only 2.5 to 3.0 hours in the system
This compares to an overall detention tim e of ten to elev en hours in con-
ventional activated sludge, and 24-26 hours in the extended aeration pro-
cess. Because the length of time the flow must be detained dictates the ~
size of the units involved in the treatment process contact stabilization
170 ~
~
minimiies overall installation costs (1.e., capital costs). This makes
the system attractive to the developer, but the use of contact stabili-
~ zation has been resisted by regulatory agencles 1n the Spokane area.
Reasons for,this resistance include the lack of operators famil iar with the
process, substantial sludge production, the number and complexity of unit
processes involved, and an inclination that contact stabilization is a sen-
sitive process which requires constant skTlled,attention.
A properly designed and operated contact stabilization unit would
~ have the advantage of somewhat Ymproved nutri,ent renovals, due to increased
sl udge production. However, the difficul ties posed in tFie long-term
operation of this process make chances of early acceptance of this option
minlmal.
SUMMARY
~
The use of interim treatment pl ants provrde for central col l ection and
treatment of waste water. These systeins are not considered to be permanent
and may be replaced in the future by municlpal sewage treatment systems or
more elaborate sma11 systems. In addition effluent qual ity is improved
over septic tank systens. These positive attributes are counterbalanced
~ by increased complexity and energy consumption. Slu dge disposal may involve
additional facil itles and costs. If effl uents are discharged to subsurface
drainfields loadings are 1 imited, by a Department of Ecology directive, to
four gallons per linear foot of draTnage p1pe. Nutrient removals are
modest. Although tertiary nutrient removal systens (activated carbon,
chemical flocculation, ammonia strippTng, nitrogen-denitrification schenes,
• etc.) may be added to minimize effluent impact on the receiving waters
(whether surface water or ground water); thelr increased costs and complexity
makes their application to msall systens unfeasible at this time.
~
~
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•
~ 171
►
~
FOOTNOTES
1. Troyan, J. J.,"A1 ternat 1 ve Systens - The Oregon ExperY,ence", i n ~
Proceedings of Northwest On-Site tiaste 6iater DisQosal Short Course
D.A. Lenninq, EdTtor, Washington State Deparfiment of Social and Health
Services (1975) pp 33-37.
2. Spokane County Heal th Di strict, Rul es and Regulations for Sewage
Disposal Systens, amended Title 1, Chapter 4, (1975)0 ~
3. Pickett, E.M., "EvapotranspiratTOn and Individual Lagoons", in Pro-
ceedings of Northwest On-S1te tiaste 4Jater Disposal Short Course, D.A.
Lenning, Ed,ltor, Washington State Deparbnent of Soc1a1 and Health
Serv i ces (1975) pp 108-118.
4. Bennett, E.R., Linstedt, K.D., and J. Fulton, "Comparison of Septic •
Tank and Aerobic Treatment Units: The Impact of,Waste Water Variations
on These Systems", in Water Po1lutTOn Control in Low Density Areas
W.J. Jewell and R. Swan, Edi°tors, UnYVerslty of Vermont, University
Press of New England; Nanover, New Hampshire (1975) pp 95-148.
5. McGauhey, P.N., "Septic Tanks and Their Effects on the Environment", •
i n Water Pol l uti on Control i n Low Density Areas rW.J W.J. Jewel i and R
Swan, Editors, University of Vermont, University Press of New England,
Hanover, New Hampshire (1975) pp 43-530.
6. Otis, R.J., Hutzler, N.J. and W.C. Boyle, "On-Site Householcd Waste Water
Treatment Alternatives - Laboratory and Field Studies", in Water Pollu- ~
tion Control in Low Densfity Areas, W.J. Jewell a nd R. Swan,, Editors
University of Vermont, UnTVersity Press of New England; Hanover, New
Hampshire (1975) pp240-265.
7. Hall, P1.W., 1975. "A Conceptual Model of Nutrient Transport in Subsur-
face Soil Systems", in Water Pollution Control in Low Density Areas, ~
W.J. Jewell and R. Swan, Editors, University of 1lermont, University,Press
of New England; Hanover, New Hampshire (1975) pp 55-64.
~ 8 Laak, R., 1974 "Nitrogen and Phosphorous Removal in a Septic Tank and
a Lagoon, Experimental Investigation of Nitrogen and Phosphorus Re-
moval at the University of Cdnnecticut Research Station." ~
9. Otis, R,J., W.C. Boyle, J.C. Converse, and E.J. Tyler, 1977. On-Site
Disposal of Wastewater Flows. U.S.E.P.,4., Technology Transfer
10. Bouma, J. 1975. "Improved Field Techniques for Measurements of Hydraulic
Properties of Soi1s", in Water Pollution Control in Low Density Areas ~
W.J. Jewell and R. Swan, Editors, University ofi Vermont, University Press
of New England; Hanover, New,Hampshire (1975) pp 181-189.
ill. B. Zulauf, A., 1976. Soils Characteristics, Surveys and Maps", in
Proceedinqs of Northwest On-Site tJaste tiater Disposal Short Course,
D.A. Lenning, Editor, 14ashington State Department of Soc1a1 and Neal th ~
Services (1975) pp 38-46.
172 ~
,
~
12. Laursen, A. 1976. "A Critical Analysis of the Percolation Test", in
Proceedinqs of No rthwest On-Site Waste Water Disposal Shart Course,
D.A. Lenning, Editor, lJashington State Department of Social and Health
• Services (1976) pp 49-52.
13. Hall, P1.W., "A Conceptual Model,of Nutr-tent Transport in Subsurface
Soil Systems", in Water Po1lutTOn Control fn Low Density Areas, W,J.
Jewell, and R. Swan, Editors, UnTVersity Press of New1England, Hanover,
New Hampshire, (1975) pp 55-64.
~
14. Troyan, J.J., "Alternative Systens - The Qregon Experience", in Water
Pollution Control in Low Density Areas, W.J. Jewell and R. Swan,
Editors, University of Vermont, University Press of New England;
Hanover, New Hampshire (1975) pp 371-388.
~ 15. Jones e P. H. "Low Cost Waste Water Treatment for Smal l Communi ti es" ,
in llater Pollution Control in Low Density Areas, W.J. Jewell and R
Swan, Editors, University of Vermont, University Press of New England;
Hanover, New Hampshire (1975) pp 389-427.
~
~
~
~
~
~
~ 173
~
FINAL
r
Environmental
•
Impact tatement
.
►i
. •
,
U
~
MtDILOME
~ SUBDIVISfC1N '
. I
• September 1978
Leed Agency : Cou nty of B pokane
~
a
~
i
Ah
~
F I PJAL
ENVIRONMENTAL IMPACT STATEMENT
~
MIDILOME SU60IUISION
~
~ Prepared for
Midilome, Inc.
~
Lead Agency: County of Spokane
~
~ September 1978
HAWORTH AND ANDERSON, INC.
West 621 Ma11on Avenue Spokane, Washington
99201
~ ~
~
~ INTRODi1CT t ON
The proposed action under review is a request for a zone change from
Agricultural to Single Family Residential for approximately 160 acres of
land and subsequent development of that property as a suburban residential
development. A preliminary plat of the property has also been submitted
~ for approval. The proposed action also includes the issuance of all neces-
sary local, state and Federal regulatory permits and approvals.
The proposed action was initiated by Midilome, Inc., a Washington corpora-
tion, who are the owners and developers of the property. This project was
first initiated in March of 1976 when a preliminary plat was submitted and
~ zone change requested fior the first phase of the project called Midilome Addi-
tion, which consisted of about 25 acres and 72 residential units. The Board
of County Commissioners of Spokane County gave final approval to the plat of
Midilome Addition on April 7, 1977. The approval of the plat specified that
individual on-site septic tanks would be used for waste water disposal. Sub-
sequent to this approval the project development proposed the use of a central
~ activated sludge extended aeration sewage treatment system in 1ieu of indivi-
dual on-site septic tanks. The proposed package sewage treatment facility and
distribution system was approved by the Spokane County Engineer on May 18, 1977,
and by the Spokane County Health District on July 5, 1977. Subsequent to
these approvals the developer commenced construction of the sewage treatment
system. Acting upon a citizen petition, the Spokane County Board of County
Commissioners held a hearing upon the revised sewage treatment proposal on
~ September 8, 1977, and on September 15, 1977 issued a written approval of the
change in plat conditians. On September 29, 1977 the developer entered into
a written maintenance and operation agreement with Spokane County for the
sewage treatment system. The above actions and the subsequent approval of the
sewage treatment system by the Washington State Departments of Ecology and
Social and Health Services are presently the subject of litigation. At the
~ present time building permits have been issued for all 72 lots approved in
Midilome Addition. Of the residential units completed or now under construc-
tion 51 units are connected to the package sewage treatment plant and 21 units
utilize on-site septic tanks.
The following environmental analysis is intended to assess the impact of
~ the entire Midilome Subdivision project including the 72 units that have pre-
viously been approved.
The lead agency for this proposai is the County of Spokane. The respon-
sible official is the Board of County Commissioners, who have assigned respon-
sibility for the environmental review process to Mr. Fred Dayharsh, Director,
~ Spokane County Planning Department.
~
The proposed~action may require the following legal actions and permits:
,
1. Oraft and Final Environmentai Impact Statements;
2 Zone Change from Agricultural to Single Family Residential,
~ 3. Approval of Preliminary and Final Plats for the project,
4. Approvals or permits from the Spokane County Health District,
Washington State Department of Social and Health Services, and
the 4lashington State Department of Ecology for design and operation
of a sewage disposal system,
~ ~
~
5. Sole Source Aquifer review and approval by, the federal Environ-
mental Protection Agency;
~
6 Project review and approval by the federal Department of Housing
and Urban Development; and
7. The obtaining of a11 required building permits.
The materials presented in this document represent the products of the
Oraft Environmental Impact Statement review process. Additions contained ~
herein are revlsed water section, comments by the reviewers of the Draft
EIS, responses to those comments by the lead agency (see Addendum, Final EIS
Comments and Responses), and a surrnnary of the contents of the Final EIS.
The format of this document follows that prescribed 1n the SEPA Guidelines
(WAC 197-10-580).
This Final Environmental Impact Statement was prepared by Haworth and ~
Anderson under the supervision of the County of Spokane as the lead agency.
P1r. Fred Dayharsh is the responsible official. Comments, information,
and questions were addressed to Mr. Dayharsh at the Spokane County Planning
Department, North 811 Jefferson, Spokane, 4!A 99201 or (509) 456-2274.
Spokane County had the assistance of the consulting firm of Haworth and ~
Anderson, Inc., West 621 Mallon Avenue, Spokane, Washington. Background
data in support of this d"ocument may be found at both offices of the lead
agency and with Haworth and Anderson, Inc. The official date of issue of
the Final Environmental Impact Statement is September 13, 1978.
The circulation of this document is prescribed in ,the SEPA Guidelines ~
(WAC 197-10-600) which directs that the Final EIS must go to "the depart-
ment of ecology, Office of the Governor or the Governor's designee, the
Ecological Commission, the lead agency's SEPA Public Information Center,
agencres with jurisdiction, and federal agencies with jurisdiction, which
received the Draft EIS. The Final EIS shall be made available to the
public in the same manner and cost as the Draft EIS".
~
ii
•
~
~
TABLE OF CONTENTS
~
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . i
DISTRIBUTION LIST . . . . . . . . . . . . . . . . . . . . . , vi
~ SUMMARY OF THE CONTENTS OF THE FINAL EIS . . . . . . . . . . . . . . . 1
IMPACT SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Description of the Proposed Action . . . . . . . . . . . . . . . 9
Exi s ti ng Conditions . . . . . . . . . . . . . . . . . . . . . . 13
~ The Probable Impact of the Proposed Action . . . . . . . . . , 18
The Reiationship Between Local Short Term Uses of Man's
Environment and Maintenance and Enhancement of Long
Term Productivity . . . . . . . . . . . . . . . . . . . 23
Irreversible and/or Irretrievable Corranitments of Resources 24
Measures to Mitigate Adverse Impacts . . . . . . . . . . . . . . 25 29
~ Alternatives to the Proposed Project . . • • • • • • • . ' ' ' ' 36
Unavoidable Adverse Impacts . . . . . . . . . . . . . . . . . . .
APPENDIX A: CATEGORICAL IMPACT ANAYSIS . . . . . . . . . . . . . . . 39
List of Elements of the Environment . . . . . . . . . . . . . . , e~, 39
~
~ Elenents of the Physical Environment. . . . . . . . . . . . . . . . . 41
l. Earth . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
2. Ai r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
3. Water. . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
4. Flora. . . . . . . . . . . . . . . . . . . . . . . . . . . .104
0 5. Fauna. . . . . . . . . . . . . . . . . . . . . . . . . . . .104 '
6. Noise. . . . . . . . . e . . . . . . . . . . . . . . . . . .105
7. Light and Gl are . . . . . . . . . . . . . . . . . . . . . . . 107
8. Land Use . . . . . . . . . . . . . . . . . . . . . . . . . . 108
9. Natural Resources . . . . . . . . . . . . . . . . . . . . . • 1'9
10. Risk of Explosion or Hazardous Em;ssions ~ E1 ements of the Human Envi ronment . . . . . . . . . . . . . . . . . . 111
1. Populatton . . . . . . . . . . . . . . . . . . . . . . . . .111
2. Housi ng . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
3. Economics. . . . . . . . . . . . . . . . . . . . . . . . . 112
4. Transportation/CirculatYOn . . . . . . . . . . . . . . . . .113
~ 5. Publ ic Services . . . . . . . . . . . . . . . . . . . . . . . 117
6. Energy . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
7. Util ities . . . . . . . . . . . . . . . . . . . . . . . . . 124
8. Human Heal th . . . . . . . . . . . . . . . . . . . . . . . . 125
9. Aesthetics . . . . . . . . . . . . . . . . . . . . . . . . . 125
10. Recreati on . . . . . . . . . . . . . . . . . . . . . . . . . 125
~ 11. Archaeological/Histor~cal. . . o . o . . . . . . . . . . . . 125
12. Additional Population CharacterYStTCS. . . . . . . . . . . . 125
Ci tations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
iii
~
APPENOIX B . . . . . . . . . . . . . . . . . . . 128
Section 1 Chemical Quality of Ground ~dater from Wells in the
Vicinity of the Project Site . . . . . . . . . .128 S~
Secti on 2• Ground Water Qual ity Data from Various Aquifer
Cross Sections . . . . . . . . . . . . . . . 142
Section 3. Water Quality Data from Depth-Selective Ground ~
Water Si tes . . . . . . . . . . . . . . . . . . . . . .149
APPENDIX C• WASTE WATER TREATMENT OPTIONS . . . . . . . . . . 156 ~
Citati ons . . . . . . . . . . . . . . . . . . . . . . . . . . .172 APPEND,IX D: REVISED GROUND WATER SECTION . . . . . . . . . . . . . .174
APPENDIX E: ESTIMATEQ DENITRIFICATION COSTS FOR VARIOUS PROCESSES 227 ~
APPENDIX F SPECIAL MONITORING RESULTS IN VICINITY OF
PROJECT SITE . . . . . . . . . . . . . . . . . .239
ADDENDUM FINAL EI,S . . . . . . . . . . . . . . . .241
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LIST OF MAPS AND TAaLES
Vicinity Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
~ Si te Ntap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Plat Design. . . . ~u;l;t; . . . . . . . . . . . . . . . . . 12
Estimated Effluent from Alternat~ve Waste Water Trea#anent
Processes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Operational Characteristic of Various Treatment Processes. 32
Estimated Total Annuai and Unit Costs for Alternative Treatment
~ Processes with a Deslgn Flow of 1.0 MGD . . . . . . . . . . . . . . 33
Soi 1 s hlap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Topography Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Maximum Monitored Levels of Polluta nts . . . . . . . . . . . . . . . . 48
Suspended Particulate Summary. . . . . . . . . . . . . . . . . . . . . . 49
1976 Carbon Monoxi de Level s . . . . . . . . . . . . . . . . . . . . . . 51
~ Non-Attai nment Area Map . . . . . . . . . . . . . . . . . . . . . . . 52
CO Moni tori ng Station Si tes . . . . . . . . . . . . . . . . . . . . . 53
CO Concentrati ons . . . . . . . . . . . . . . . . . . . . . 55
Aqui fer Recharge Area . . . . . . . . . . . . . . . . . . . . 59
Thickness and Seismic Profile of the Spokane-Rathdrum Prairie 61
Aquifer Transmissivity Distribution . . . . . . . . . . . . . . . . . 63
~ 4later Level Fluctuations in Well 25/44-2301 . . . . . . . . . . . . . 65
aquifer Discharge/Recharge Rates . . . . . . . . . . . . . . . . . . . 67
Estimated Average Rates of Recharge to and Discharge from the Aquifer. 68
Monthly Water Balance Data for Spokane Valley Under Generalized
Suburban Condi ti ons . . . . . . . . . . . . . . . . . . . . . . . 71
Summary of Public Water-Supply Systems Obtain~ng Water from the
~ Aquifer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Water Qual i ty Standards . . . . . . . . . . . . . . . . . . . . . 76
Summary of Ground-Water-Quality Data . . . . . . . . . . . 78
Records of Locations Where Constituents in Ground-tdater Samples
Nave Exceeded Chemical Standards . . . . . . . . . . . . . . . . . 79
Ground Water Quality Standards Violation Sites . . . . . . . . . . . . SO
~ Historical Nitrate Levels From Selected Wells Near Project Site 82
Variation 1n Ground Water Quality at Various Aquifer Cross Sections. . 83
Variation in Ground Water Quality at Various AquiferCross
Sections Map . . . . . . . . . . . . . . . . . . . . . 84
"208" Field Data Average Total Nitrate, mg/1 . . . . . . . . . . . . 85
0208" Field Data Average Total Nitrate, mg/1 . . . . . . . . . 87
~ DSHS Data Average Total Nitrate, mg/1 . . . . . . . . . . . . . gg
Location of Depth Selective Groundwater Test Sites . . gg
Water Quality from Depth Selective Ground Water Sites 90
Summary of Annual Water Balance and Percolation Quality Values for
Spokane Valley Suburban Conditions . . . . . . . . . . . . . . . 93
Well Locations Downstream from Project Site . . . . . . . . . . . 95
~ Distribut7on of Wastewater Treatment Facilities . . . . . . . . . 98
Estimated Effluent Quality . . . . . . . . . . . . . . . . . . 100
Noi se Li mi tations . . . . . . . . . . . . . . . . . . . . . . . . 106
Motor Vehicle Noise Performance Standards . . . . . . . . . . . . . 106
Exi sti ng Noi se Level s . . . . . . . . . . . . . . . . . . . . . 107
Annual Average Daily Trafflc Counts . . . . . . . . . . . . . . . . 114
~ Proposed Road«ay System . . . . . . . . 116
Location of Public Service Facilities . . . . . . . . . . 118
School Enrollment Expected from Midilome . . . . . . . . . . . . 120
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DISTRIBUTIOPi LIST
U.S. Environmental Protection Agency, Seattle ~
U.S. Soil Conservation Service, Spokane
U.S. Soil Conservation Service, Conservation District, Spokane
State Depa rtment of Commerce and Economlc Development
State Department of Ecology, Eastern Reglonal Office, Spokane
State Department of Ecology, Olympia (2) (1 to the SEPA RegTSter)
State Ecological Commission •
State Department of F1 sheri es
State Department of Game, Olympia and Spokane
State Department of Transportation, Olympia
State Department of Transportation, Spokane
State Office of Fiscal Management
State Department of Soaial and Health ServTCes, Olympia
State Department of Social and Health Services, Spokane •
State Utilities and Transpertation CommTSSion, Olympia
State Office of Archaeology and Histo ric Preservation
Spokane County Air Pollution Control AuthorTty
Spokane County Board of Comnissioners (3)
Spokane County Building Depa rtment
Spokane County Engineer's Office (4) •
Spokane County Library District (3)
Spokane County Park Department
Spokane County Planning Comrnission (7)
Spokane County Planning Department (",0)
Spokane County Prosecutinq Attorney, Civil Divlsion (2)
Spokane Regional Planning Conference (2) ~
Spokane County Health District, Environmental Health Division (3)
Spokane Fire District No. 1
Pacific Northwest Bell Telephone Company
Washi ngton liater Power Conipany
Uashington State Energy Office, Olympia
Washington State Department of Natural Resources, Colville ~
Washington State Department of Natural Resources, Olympia
Spokane Corrmuni ty Press
Spokesman-ReviQw
Spokane Daily Chronicle
Spokane City Library (2)
Valley fierald ~
Eastern Washington Health Systems Agency
Central Valley School District
Chester Elementary School, Principal
Model Irrigation District
Bob Tomlinson (5)
Willard Sharp 0
Joan Honican
William Powell, Attorney
Va 11 ey Ga rbage Serv i ces
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SUMMARY OF THE CONTENTS OF THE FINAL EIS
PROPOSED ACTIOPI
~
The proposed action is for approval of a zone change and preliminary
plat and a waste water dTSposal systern for the development of the Midilome
residential subdivision. The proposed proJect provYdes for the development
of approximately 425 homes on 160 acres of marginal agricultural land in an
area south of Opportunity bounded 6y Pines, 40th Avenue, Bowdish, and 32nd
~ Avenue. The project sponsor is proposing the centralized collection of
sewage and waste water and treatment in a central activated sludge extended
aeration system. The project wYll 6e 8eveloped in phases over a three-year
period.
PROBABLE IMPACTS
~
Earth
* Disruption, displacement, compaction and overcovering of soil.
* Pave or overbuYld of 30 percent of the project site.
* Minor alteration of topographTcal contour of the project site.
Minor wind and water erosion durTng construction phase.
Air
* Temporary dust and pa rticulates during construction phase.
* Slight lncrease rn emissi,ons trom heating and air conditioning
~ systems and fireplaces.
* Increase in traffrc related emissions.
Water
* Disruption and alteration of existinq surface water runoff
~ characteristres.
* Construction of impervious su rfaces over 30 percent of the s i te.
* Potential ground water contamination from percolation of su rface
water runoff.
* Disposal of over s1x million cuhic feet of treated waste water
annually to drainfield located over the aquifer.
Potential ground wa ter contamination from sub-surface disposal
of treated waste water effl uent.
Fl ora
* Removal of 160 ac,res of marginal farmland from production.
Repl acement of exi sti ng fl ora tivi th domestic 1 andscapi ng.
Fauna
* Decrease in number and diversity of species.
* Removal and disruption of wildlife habitat.
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Noise
* Tempor`ary increase in ambient levels during construction.
* Increase i n noi se after devel opanent due to i ncreased traffi c ~
and suburban residentlal actiwTties.
Ljiht and lGl are
* New sources of 1Tght created.
~
Land Use
* Compatible with surroundrng land uses.
* Replacement of margtnal agricultural use with more intensive
resldential use.
~ Construction of 425 new homes. ~
Natural Resources
* Consumptlon of building materlal and energy.
* Energy consumption for space heating and cooling and transportation.
* Withdrawal, of 160 acres of margrnal land from agricultural pro- ~
duction.
Risk of Explosion or Haiardous EmTSSion
* Temporary risk during constructTOn phase.
~
Population
* Housing for a total population of approximately 1,300 persons
Housi ng
* Construction of approximately 425 new hom es. ~
TransportatYOn/Circulation
* Generation of about 3,400 trips per day.
* Internal roadway system paved and curbed. ~
Publ ic Services
* Increase in fire and police protection service requirements.
* Increased school district enrollment by 500 students.
* Temporary overcrowding of junior and senior high schools. ~
Increased need for additional school district facilities.
* Increased utilization of park and recreational facilities.
* Increased roadway system maintenance costs.
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EnergX
* Consume estimated 250,000 therms of natural gas.
Consume estimated 1.5 to 2.0 million kwh of electricity.
* Direct and indirect consumptTOn of energy for space heating,
air conditlonrng, lTghtTng and transportation.
Utilities
Increase jn utYlity servrce requ rrements.
* Water consumptlon of 14 mtllron cnbic feet per year.
* GeneratYOn of snc mTllion ca6fc feet per year of waste water.
* Generation of 1,100 tons of solid waste per year.
Human Health
~
(Please refer to the sectTOn on Ground Water Quantity.)
Aesthetics
* No adverse impacts identifTed.
~
Recreation ,
,
* P1o adverse impacts identified.
Archaeological/Historical
~
* No adverse impacts identTfTed.
ALTERNATIVES
No Action
Site would remain temporarily in limited agricultural use.
* A11 ows subsequent developmen't wi th different or greater en-
vironmental impacts.
* Allows subsequent piecemeal development precluding centralized
waste water collection.
~ Al ternate Si tes
* No applicant ownership or control of alternate sites.
* Pose same or equ`lvalent lmpacts in terms of traffic, site devel-
opment, utility and service demands, noise, light and glare, and
~ air quality impact.
* Reduced ground water quality impact if site not located over
aqyifer.
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Alternate Development Concepts
* Lower density development would mitTgate impact on air quality,
traffic generation, noise, schools and other public service and ~
utility requ'rrements.
* Lower densl ty woul d resul t i n hlgher per uni t cost of housi ng .
* 'Hi gher per uni t devel opment cost for uti 1 i ti es .
* Central collection and treatment of waste water less feasible
at lower density.
•
A1 ternate Sewage Treatment A1 ternatrve
Land Application,System
* Tertiary treatment method.
* Effluent with low nutrrrent concentration. ~
* More effective than suB-surface dTSposal.
* Requires 50 to 100 acre+s of land.
* High development cost.
* Alternate disposal requfired durTng wTnter months.
* Publ ic heal th ri sk fr,om water overspray.
~
Pond and Lagoon Systens
* Effluent quality margfinal wTth nutrient removal equivalent to
septic tanks.
* Surface dTSCharge not feasTble due to marginal effluent qualit,y
and lack of proximity to surface water. ° ~
* 14ould require nvn-overflow lagoon (50 or more acres of land) or
effl uent di scharge to drai nfTel d.
* Odor and other operational pro6lems.
On-slte Disposai System (Septic Tanks)
~
* Function with minimal maintenance.
* Effluent quality is not improved over activated sludge system.
* Effluent not centrally collected.
* 'No flexibility to upgrade level of treatment.
* No infrastructure developed if central comnunity treatment systern
i s requ i red . ~
MITIGATING MEASURES
Earth
* Minimiie areas of soils disruption.
* P4ulching and landscaping of disturbed areas. ~
* Fol low natural contours of 1 and.
* Measures to prevent erosion and stabilize soils.
Air
* Application of water or dust pallative to reduce dust from con- ~
struction.
* Traffic detouring where required.
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* Implementatlon of Federal Automo611e emission control standards.
* Proper operatTOn and maTntenance of sewage treatment plant to
elimTnate odors.
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Water
* Addition of denitrification nnit operations to treatment plant.
* Central collectlon and treatment provides flexibility to meet
future needs.
Infrastructure for community systen developed.
* Proper drai nfi e1 d se1 ectYOn.
* Reduce significantly the density of the develo pnent.
* Operation of monitortng wells.
* Buffer zone between drarnfYeld location and well locations.
• Flora
* Site landscapTng Tn areas where vegetation removed.
Fauna
Site landscaping in areas where vegetation removed.
Noise ~
* SelectTVe bPrming or vegetatron along roadways.
* Sound insulation of homes Tn hlgh Tmpact areas.
Orient homes to minimize norse exposures.
Llght and Glare
* Landscaping.
* Aesthetic design.
~ Land Use
* Lower density development.
Natural Resources
Design that minimizes resource consumption.
* Util ize energy effTCient design features.
Risk of Explosion or HaZardous Emission
* None a
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Population
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* None. 1
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Housi n4
*
None.
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Transpo rtation/Circulat-ron
* Reduce traffTC by encouraging alternate methods of transportation.
* Roadway system Tinpnovenents. `
* Street names consistent with surroundTng area.
~
Publ ic Services
* Increased property tax revenues. ~
* Expansion of school dTStrTCt facilities.
* Sidewalks Tn vTCYnrty of schools.
* Temporary busing of students or realignment of attendance ,p
boundaries.
Energj
* Utllization of energy efficient desTgn features.
~
Uti1 i'ti es .
* Close coordinatlon between sponsor and utllity firms.
* Buffer zone between drai nfiel d and wel l si'tes.
Human Health ~
N/A
Aesthetics
N/A ~
Recreation
N/A ,
archaeol ogi cal /Hi storical ~
N/A
UNAVOIOABLE ADVERSE IMPACTS
Earth
~
* Disruption, displacement and overcovering of soils on-site.
* Pave or overbuild of 30 percent of site.
Air
* Uncontrollable dust during construction phase. ~
* Increased enissions from vehicle traffic.
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Water
* Alteration of surface water absorntion characteristics.
Potential surface water contamination of ground water.
* Potential ground water contamination from disposal of treated
waste water effluent.
Flora
Removal of 160 acres of margTnally productive farmland.
Fauna
* Dlsruption of wildlTfe habitat.
* Mlnimal reduction in num6er of species.
~
Noise
* Some increase in ambient noise levels during construction.
* Increase in noise levels due to Yncreased vehicle traffic.
~ Land Use
* Conversion of 160 acres of marginal farmland into more intensive
residential use.
Natural Resources
Direct and indirect consumption of natural resources for building
material and energy.
* 160 acres of margznal farml and taken out of producti on.
Risk of Explosion or Hazardous Emission
None.
Popul ati on
* Increased demand for public services and facilities.
~ Housing
* None.
Transportatlon/Circulation
Generation of additional traffic over existing roadway systemso
Public Services
* Increased service requirements for police and fire protection,
~ educational and recreational facilities and roadway maintenance.
~ 7 .
~
* Addition of 500 students to school district enrollment
* Temporary overcrowding in school district faci] Tties.
Energ ~
* Direct and 1ndTrect Tncrease Tn consumption of energy for
space heatTng and coolTng and transportation.
Utilities
* Increase in utT 1 rty serv Tce requ i renents for the area. 4D
Human Health
N/A
Aesthetics
N/A
Recreation
N/A ~
Archaeol ogi cal /Hi storical
N/A
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APPENDIX D ~
REVISED GROUND WATER SECTION
The following section contains revised ground water info,rmation
~ received after the issuance of the Draft Environmental Tmpact Statement. .
The pages of original text have been included with the additions and/or
changes underlined.
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174
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3.6 Ground Water Movement
~ a Existing Conditions
The Spokane-Rathdrum aquifer extends from near Spirit Lake and Pend
Oreille Lake in Bonner and Kootenai Counties, Idaho, southwest across the
Rathdrum Prairie and down the Spokane Va11ey through the City of Spokane,
terminating at the confluence of the Spokan`e River and the Little Spokane
River. The aquifer is the primary source of drink7ng water for approximately
~ 350,000 people in an area which includes the cities of Spirit Lake, Athol,
Rathdrum, Hayden Lake, Coeur d'Alene and Post Falls, Idaho and Spokane,
U1ashington The recharge zone is that area through which water enters or
could enter into the aquifer. For the Spokane-Rathdrum aquifer the recharge
ione is the land area directly overlying and adjacent to the aquifer as
shown on the following figure. There is an upstream headwaters area draining
~ into the aquifer recharge zone which contributes approximately 90 percent of
the recharge flow to the Spokane-Rathdrum aquifer. This streamflow area
which feeds the aquifer covers an area of about 350 square miles and is
shown in the following figure
Geol ogX ~
~ The Spokane Valley-Rathdrum Prairie aquifer is composed predominantly r
of Quaternary glaciofluvial deposits which extend from Pend Oreille Lake,
Idaho to north of Spokane, Washjngton. The deposits consist primarily of
sand and gravel, fine to coarse, and are poorly to moderately sorted, having
scattered cobbles and boulders. The sand and gravel is relatively free of
~ fine sand and srilt, except in the uppermost three to five feet, where fine
grained material fill most voids in the sand and gravel. In the Hillyard
trough, near the dotivnstream end of the aquifer, the sediments become pro-
gressively finer toward the north, where the aquifer is composed predominantTy
of stratified sand but includes some gravel and silt and a few boulders.
~ In most areas, the aquifer overlies the semiconsolidated, fine grained
Latah formation of Mlocene age. In some areas the aquifer has abrupt lateral
contacts with sloping bedrock surfaces, but in other areas, it grades laterally
into less permeable, unconsolidated materials which are not readily distin-
guishable from the aquifer material. In such places, the selected boundaries
of the aquifer recharge area are somewhat arbitrary
40 The thickness of the aquifer is not we11 established. The best data
exist where two sgismic surveys have supplemented available drilling data.
The seismic data indicate a total thickness of about 400 feet of uncon-
solidated material near the Idaho-ldashington state line Because the water
table is at a depth of about 120 feet, the saturated thickness of the aquifer
~ is about 280 feet. In ths3Hillyard trough, a test hole showed 780 feet of ~
unconsolidated materials. A seismic interpretation for the same area desig-
nated about 160 feet of these material as the saturated part of the aquifer
with about 150 feet of unsaturated materials above the aquifer A diagram
of the seismic proflles is shown in the follotiving figure.
~ In general the only wells that penetrate the entire thickness of the
aquifer do so near its extremeties, in the thinner parts of the aquifer.
~ 58 '
175
1 , .
.
~
h 1haJ wvno ac _ ~ .
Frve ~Ule I'roi~ r ~ plr=m Pranw
~
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AINldAt 0. '
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~ hlurmi {'r~me ~
N a~
Q vm /
a 4 ~ AQUlFkN HI.LIIARI& AItI.A
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SOUNCE. U a G S
~
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~
UNlTED 57ATES DLPARTMEN7 OF TTfe INTgRIOR Prapereo in cooRaraflan wlth1the OPETI-fILE REPOftT 77 829
~ CiEQi.OtR1CAL 6URVEV U.8. ENVIRONMENTAL PROTECTON Al3£NCY PLqTE 1
*Ar4a ERTA
co~va~ .
of mop
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MISSOULA J
~ 7 r
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IXPL1taiTI0N ~ •
.
D:elnage divide of Spokane Ftiver- 2 ~
Coaur d Alene Lake Basin
~C
~ . Drainaga divide af the Feced Oreille ~ •
Laka Sasin
~ jBUTjE
A 22 SurEacs-xater data collection nito - = ~
ans nusaDer Lw~ 7-
Spokane Veiley-Rathdzum Prairie ~
aqv3f8r _~o 10 20 !D 40 50 BONILES
t . I i . I
~ I Ca~ r am ~ LO~~~sp aa~ f q
~ ~ 1~~1 CI 0~01 JJI.~ COwwlisl~•
Co~~wfia ~ 0~~ • ioSs
8 1 S00 000
PLATE i-- Map sho%. ing the parts oi the Spokane River basin and
the Pend Oreille River bauin tlrashing►ton. Idaho, and Montt;na.
which are rerharge areas for the Spokane v'alley Rathdrum
Pralrie aquiPer
~
~ 60
177
t
~ ~ ~ ^ •
0
0
0
d
THICKNESS AND SEISI~IIC PROFILE OF 0
THE SPOKANE-RaTHD RUM PRAIRIE o
• ~
•
•
■
~ ~ Spini I.ake
•
■
Athol
WASHINGTON ~ IDAHO ~
■
•
~
•
■
•
■
•
■
•
■ ~
• ~ Chico
■
•
■
•
■
•
■
•
~ Hauser ~
0 Lake ~
Newm3n LaCe R.zthdrum Havden L31.e
H Post
lllyard Pro61e
. u ~ Falls
N • ~yY ~
~ •
~ Coeur d'Alene ~
t'~:. f• ~
~ Spokane •
■
Valley a Stute I.Iae Profile
~ polcane s ~
; s lrberty ~
4.... %Mov
L~~ene e
:Noran P'raine Lake ~ Coe ~
■
•
■
•
IL.LYARD TROUGH
H
SCATE L1VE SE1SyiIC PROEILE c I Ic SEISMIC PROE[LE
~ ~ ~~o •
~
vail~ Zj^
2000 J
Water Table 4L ( watei Table c L. ,s...Glaclal & Olacial
a 1800 -
Ftuvial OeOOSIts
1600_ - _ ~ ~ a ~ _ _ - - •
~ -
a a~ 1400 -
c Gfantte Rock -
~ 1200 _
Gran(te Rock
iaoo - ' ' -
809 ~ r ~ ~ + I ~ ~ • , ~
~ ~ ► ~ ~ i r
o a ~ ~ ° ° o o c° 3 c o •
~ ~ N ~~'S ~C 00 `C Q N N Q ~O zD
r
[7istance tn test lrom tn0lwted reterence
SOURCE Esvelt & Saxan. Consulhng EngLncers
~ H,WArH < ~.crtrz• % sm ~
i z frwuc c i o ~ d Imonrj! .t I.+r% i pl i i s1 v u r i u c+
~r• ~
1/O
~
Wells drilled away from the margins generally penetrate only 50 feet or
~ less below the water table.
The project site is located near the margin of the aquifer in the area
south of Opportunity. In the area the ground water is thinner than in the
main body of the aquifer to the north.
Hydraulic Characteristics 4
~
The transmissivity of the aquifer (the rate at which water will flow
through a unit wldth of the aquifer under a unit hydraulic gradient) is gen-
erally high. Values calculated by the U.S. Geological Survey for designated
parts of the aquifer are shown on the following figure. Transmissivities
calculated by the U.S.G S. range from .13 ~illion ft2 per day in the western
~ end of the aquifer to about 3.4 million ft per day near the Washington-Idaho
state line.
The transmissivity of the aquifer at a certain point is a function of
the depth or thickness of the aquifer at that point. As discussed in the
previous section the project site is located on the southern margin of the
~ aquifer where the aquifer is thinner. This wou1d result generally in a lower
transmisslvity of the aquifer in the vicinity of the project site than in the
main body of the aquifer to the north. The finer grained soils which under-
lay the project site would also tend to reduce the transmissivity of the
aquifer at this point. A lower transmissivity of the aquifer in the vicinity
of the project site would result in a lower flow rate per unit width of the
p aquifer and probably less mixing action than occurs in the main body of the
aquifer to the north.
Calculated values of ground water velocities are relatively high. U.S.G.S.
calculations for the aquifer at the state line indicated a velocity of about
64 feet per day. In an earlier study conducted by the U.S. army Corps of
~ Engineers a different set of estimated aquifer characteristics r~esulted in a
calculated veloclty of about 90 feet per day at the state line For the
Hillyard trough the U.S G.S. calculated average velocity is about 47 feet per
day. In the Corps of Engineers study, the velocity was calculated to be 41
feet per day. These values are relatively high 1"or a ground water system and
indicate that the aquifer is a very dynamic system and not a relatively stable
~ pooi of water.
The lower transmissivity and fine grained soils which characterize the
aquifer near the project site would tend to result in lower ground water
velocities than are found in the main body of the aquifer to the north of the
project si te.
~ The U.S.G.S has calculated the rate of ground water flow in the aquifer
to be 960 and 350 cuyc feet per second at the state line and in the Hillyard
trough,; respectlvely. Similar rates calculated in the U.S. Army Corp~ of
Engineers 5tudy were 1,000 and 200 cubic feet per second, respectively.
~ Water Level s
The water table in the aquifer slopes from the Hoodoo Valley and Lake
Pend Orejlle, Idaho to the Dartford area north of Spokane, Irlash7ngton The
~ 62
179
e,~d Poone,ao
°•~~k 108 ~ ~ ~G~~
u5 ]9S r~,umu«.iq U~~
H~wlne qtl /dar►
Counrry ics nvc~e nluo rm aLugaota~t Pui ut
S~w~n b1~1~ ~ve hlile 1'ta~ne d aa c b~t~ T~ s~r
73 K lu6 ~u
Gadirypea! Swrey buod ua olwlalal
Ituw 6314M 2nJ walM tobllo padlenU,
~
0
PAfkeaunl Pquls RU
'
~ ~ o GJ~S
~ O~ntif Ave ~yd
N Ne IO~ YI C 1
10,111
~ ~n Q a ~ ~ ~ 1 letlov AvE f~ p Tf v1h11
y ~ a ~ tl S /
e 0~ ~
^ rp o~~~a~
5'P"Oln N
000A h0'+~ 4~yry4.~ Nliilwood s~Uk •
~ ' aw~y~ o a~ J
O W k~f Si. % r o 1 i~ ~t
E'urkwniLr Q
TienVR~a .Z~W
° ~ 090 u C 8r owar Are
c ~
11Is11111 in 1'i, radaf%.
Sounup tt Q ~ S fn a Are ; 5
• - =
,~a ~ppo tumts
% V
~IItR~~KT o 'r~, ~ ,
~ _a b
2yin'a,o (d%.nrots. j w Avo ,I
I oI SrrE
17111 Aro ! tit iffig-ow ~
3:~ 7- fp n nw
~ I
1°0 1loron Pruuic ~u~F
EL AQUIFCR TRANS(►1IS5lYITY !)lSTRIBU''ION
~
~
r
An I
I
~
aquifer is at a maximum elevation of about 2,180 feet in northern Idaho and
~ declines to about 1,540 feet in the area north of Spokane. The water table
in the northernmost part of the aquifer slopes about 20 feet per mile of length,
while the major portion of the aquifer from northern Idaho to the southern
edge of the HYllyard trough slopes relatively gently, from two to 10 feet per
mile. The average annual elevation of the water table is shown in the figure above.
~
• '
The water table contoursshown on the above referenced fi g,ure reflect
the estimated annual average elevation. The water table at a particular loca-
tion will vary seasonally with surface water runoff, precipitation and other ,
climatic factors. Water level fluctuations are generally less than 15 feet ,
during a year in most areas. Generally the greatest annual fluctuations occur
~ in those wells nearest to the Spokane River, in response to changing stages .
of the river. Water level fluctuations from a we11 located in the vicinity
of the project site are shown on the following hydrograph. ,
~
,
The depth to the water table is the greatest in northern Idaho, about
300 to 400 feet below the land surface, and becomes gradually shallower
~ downstream, reaching depths of about 120 feet at the Washington-Idaho state
line and about 40 feet near Spokane Continuing downstream the depth to the
water table increases to aboUt 150 feet in the Hillyard trough 8 In the
vicinity of the project site the deptO to the water table ranges from about
70 to 90 feet below the land surface.
b. The Probable Impact of the Proposed Action
~
The project site is located nPar theamargin of the aquifer south of '
Opportunity. The aquifer is thinner ana has o lower transmissivity in this
area than in the main body of the aquifer to the nvrth. Ihe seasonal
fluctuations of the water table and the relatively hign sait content
of the water in this area has lead to fhe possi6i'My Mff7here is very
~ little fiow of qroundwater in this area.
4Jhile it is not antici~ atea~at the proposed project will have
an erceptible im act on t~ie geology or hydrology ofThe aquiter, ie
exi sti ng hydro 1 ogy~the aqui fer near 5e project s i te maKe i t more
suceptible to potential water quality degradatlon trom project reiated
eff 1 uents .
4
c. Measures to Mitigate Adverse Impacts
None.
d. Unavoidable Adverse Impacts
~
None.
~
64
~ 181
~
llater Level Fluctuatians in 11e11 25/44-23D1, 1931-77
80
85 - ~ - ~
.
90 - ~
,
95 - ~
100 ' ' 1931 1932 1933 1934 1935 1936 1937 1938 1939
~I
75 , , , ► '
80 - , -
~
85 - ~
4 ~
_ .
90
N 95
° 100 1940 1941 1942 1943 1944 1945 1946 1947 1948
a
J 75
i ►
O so _ ; - ~
m 85 1~jq
90
~
z 95 -
W 100 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958
~
3 75 ~ ► ~ 0 80
~ 85
a ~
0 90 - .
95 - 100
1959 1960 1961 1962 1963 1964 1965 1966 1967 1968
75 1 1 - ~ 80
,
. .
ry ~ 85 , - ~
90
,
P\V
95 -
100
,1969 1970 1971 1972 1973 1974 1975 1976 1977 ~
Weli number 25/44-2301,
Depth 97 ft,
Water use Irngation
~
65
1 8~
~
~ 3. 7 Ground Water Quantity
a Existing Conditions
Water F1 ow
~ The U.S.G S. has calculated the rate of ground water flow in the aqui-
fer to be 960 and 350 cubic feet per second at the state line and in the
Hillyard trough, respectively. Similar rates calculated in the U.S. Army
Corps of Engineers Study were 1,000 and 200 cubic feet per second, respective-
ly. Preliminar.y results of the "208" study indicate a Tower flow rate.
~ Recharge to and Discharge from the Aquifer 10
The aquifer is recharged by percolation of surface water runoff and
underflow from adjacent highlands, by percolation of precipitation, by
seepage from the Spokane River, by seepage from lakes which lie adjacent
to the aquifer, and by percolation of irrigation water diverted from sur-
face water sources. The following figure and table show the locations and
~ rate of recharge to and discharge from the aquifer as estlq~ted by the
U.S.G.S. using t(ne results from a number of prior studies.
In the highlands and hi11s which lie adjacent to the aquifer, precipi-
tation produces small streams which lose most of their water to lnfiltration
as they flow only short distances across the land area above the aquifer.
~ Some surface recharge probably occurs in the area south of the project site
at the sink area where Plouf Creek disappears. Coeur d'Alene, Pend Oreille,
Spirit, Twin, Hayden, Hauser, Newman and Liberty Lakes are all adjacent to
the aquifer. Part of the water that flows into these lakes is evapor-
transpired, diverted, increases storage or becomes surface outflow, and part
percolates into the ground and recharges the aquifer. The average inflow to
• the aquifer from these adjoining areas totals about 1,010 cubic feet per
second, with about 800 cubic feet per second in Idaho and about 210 cubic
feet per second in Washington. Direct recharge from precipitation has been
calculated to be 130 cfs for ldaho and 50 cfs for Washington These
amounts represent that part of the precipitation which is not lost as surface
runoff or as evapotranspiration and is therefore available for recharge to
~ the aquifer The aquifer receives an average of about 80 cfS from the
Spokane River between Post Falls, Idaho and Greenacres, Washington. Addi-
tional recharge comes from the Spokane River near Post Falls, Idaho where
about 100 cfs is diverted from the river and used for irrigation. It is
estimated that about one-half of this amount recharges the aquifer. The
above estimates give a total of about 1,320 cfs.
~
The aqulfer loses water to the Spokane and Little Spokane Rivers at an
average rate of about 19090 cfs. An additional ground water outflow of
about 55 cfs occurs at the downstream end of the aquifer near Nine Mile
Falls, Washington Water use accounts for most of the remainder of ground
water discharge Approximately 62 cfs of water in Washington and 2 cfs of
~ water i,n Idaho are pumped from the aquifer and eventually discharged to the
Spokane River through municipal sewer systems. In addition, large quantities
~ 66
183
Oallluw
r AUram6cnbcuGfalpaamna
S f
- 3 I 0 / 0 + I 1 FLw iwn aqmlcr Imm ut~~oinp uia ~ 1
4u4u=e lu uw N{olln '
/ ~e~ 5aa~~n.w . q T
1 S ~ - dxlure 4uro IAe wulfci
~
PIIM tllly
ubdwgt (Ntll 4-~ 01 tph]Ip W it)
Int MIIC ~
• r 1 18 ~r aa Itm pufo i6iougpb tYn 6pnlseo 4c0 ~
FfvL hlilt Nrauie ple=nt Nralnr W006PA4O'
- -I ,
wwMCrm lie
+ +Z we Ahlk. J I TutW Pumpfag l.us+ ~
* b5
~ Waslnngtun
1; in
`-120 ,L ;S
7~ hlnRdn nurm wwr' aa . D
- - u ~
+g •
-330 Tremwaod ~
Qk~B1~ +RU~OtaOrchards ~ • ~
00
1 $p V I
~ l7S I'll4p :30 .
P~
I fliwawar na 16
~A1 ~ O
oaanw ~a Q31 ~IIIWII ~q rW~An ~
-'a
~
+2 r Opparlumty
+i s vrradale +io
Q a° ~ 1
I ~ b•e~p ~ Pttdpttatinn unoaa ~ U y lakr ;
%rn►aKtI% rrMn%na%eL Aunus
I MnvuAr Lmputmmpinhun : ~pp 5ITf' ~ ~ . .
~ i SO ~
r - ~ ~
Muran Praine
$ 4 AQU1FER DISCIiARGEIHtCNAItGI kATfS
8 a
's
o ~q
r
~ .
~ .+Jw.. N N 1.. ]MUl~LI V~7.C S
fq81 Ull k1 c
~
~
~ ~ e • • ~ ~ e • •
~
ESTIMATED AVERAGE RATES OF
RECHARGE TO AND DISCHARGE FROM
~ THE AQUIFER
Cub1c Feet Per Second
Subtotal Total
RECHARGE
~ Flow into aquifer from adjoining areas +19010
Idaho +800
Washington +210
Precipitation minus evapotranspiration
on the land surface above the aquifer + 180
~ Idaho +130
Washington + 50
Seepaoe from Spokane River between Post Falls,
Idaho, and Greenacres, Washington + 80
Inflow from surface-water diversion
(recharge by water diverted from Spokane River
~ east of Post Falls, Idaho, and applied to land
surface above aquifer) + 50
TOTAL RECHARGE +19320
DISCHARGE
~
Seepage to Spokane River - 780
Greenacres to Trent, Washington -330
Trent to Spokane, Washington -230
Spokane to Seven Mile Bridge, Washington -120
Seven-Mile Bridge to Nine-Mile Bridge,
~ Washington -100
Seepage to Little Spokane River between Dartford
and about 3 miles above its mouth - 310
Total pumping loss in Washington - 127
Ground water pumped from aquifer and
discharged to Spokane River and Peone Creek - 62
~ Consumptive use of ground water (water
pumped from aquifer and removed by
evapotranspiration - 65
Total pumping loss in Idaho - 48
Ground water pumped from aquifer and
discharged to Spokane River - 2
~ Consumptive use of ground water (Yrater pumped
from aquifer and removed by evapotranspiration) - 46
Ground water outflow below Nine-Mile Falls - 55
TOTAL DISCHARGE -19320
~ CNANGE IN STQRAGE 0
Source United States Geological Survey (1978)
~ 68
185
~
of water are pumped from the aquifer and applied as irrigation water on the
land surface or are discharged to sQbsurface dTSposal systens, after domestic
or industrial use, where potentially part of the water returns, by infiltra- ~tion, to the aquifer.
Irrigation use of ground water averages about 31 cfs in l,fashington and
61 c fs in Idaho. Assuming a consumptive-use factor of 0.67, a total of 21
cfs in Washington and 41 cfs in Idaho are lost from the aquifer 4later ~
pumped from the aqu7fer and discharged to cesspools or drain fields, or used
for domestic irrigation, averages about 74 cfs in Washington and 9 cfs in
Idaho Using a consumptive use factor of 0.59, as calculated by Todd (U.S.
Army Corps of Engineers, 1976), total loss from the aquifer is about 44 cfs
in Washington and 5 cfs in Idaho. These various pumping losses total 127
cfs in Washington and 48 cfs in Idaho, for a total pumping loss of 175 cfs
~
The above estlmates give an average rate of discharge of about 1,320 cfs.
This is equal to the estimated average recharge rate gecause no long-term
change in storage within the aquifer has been observed within the past 50 years,
based on water table fluctuations,it is assumed that a state of near equilibrium
exists in the aquifer
~
Potential Recharqe from Sewage Disposal Ystem Orainfields
As discussed above, based on U.S.G.S. estimates 74 cfs in lJashington and
9 cfs in Idaho is pumped from the aquifer and used for sewage disposal in
drainfields or for domestic irrigation Using a consumptive use factor of 59
as calculated by Todd in the U.S. Army Corps of Engineers study, a total of 30 ~
cfs in Washington and 4 cfs in Idaho wou1d be-available for recharge to the
aquifer. Of the 30 cfs in Washington, about two-thirds or 20 cfs 1s the re t
of domestic irrigation, leaving about 10 cfs the result of sewage disposal
If all of the above where to in fact recharge the aquifer it would constitute
approximately three percent of the total volume of water which recharges the
aqui fer. ~
The literature to date continues to show a conflict over the probability
of drainfields as an aquifer recharge source A test drilling program was
conducted by J. W. Crosby of Washington State University from 1967 through
1970, to evaluate ground water and pollutant movement from various sources in
the Spokane Va11ey. 13 He found the soil to have a low natural moisture con- ~
tent coupled with apparent high moisture tensions. These results led him to
suggest that soil moisture was not moving downward to the ground water table.
In the final report of the results of the drilling program, Crosby states as a
conclusion of the study:14
Further study of the moisture conditions in the Spokane outwash ~
gravels has strengthened the earlier conclusion (Crosby, et al
1968) that these deposits are generally in a highly stressed
moisture condition. Ground water recharge cannot be demonstrated
as occurring in response to precipitation. Instead, it is sug-
gested that recharge is associated primarily with marginal streams
that discharge onto the outwash plain maintaining saturated condi, ~
tions in the gravels for extended periods of time Precipitatlon
is stored in the upper strata and apparently removed during the
growing seasons. Oominant moisture movement is probably in response
to capillary and thermal gradients
186 ~
~
Further on 1n his conclustions Crosby states
~ These writers postulate that drainfield waters may in the early
stages of field use percolate to depth. However, as or anic
matters are formed as described by McMichael and McKee ~1966),
Buter, et. al (1954) and Calwell (1938) further deep perco-
lation is arrested and moisture movement is predominantly
~ lateral in response to capillary forces The initial moisture
at depth is rapidly dissipated as equilibrium is reestablished
with the surrounding media.
The investigations of Crosby,et al., have been critici2ed on the basis
that the samples from the drilling program were only taken during the summer
~ months when the rate of moisture removal by evapotranspiration would be the
highest In addition the Crosby studies reported no significant salt build-
up in the soil beneath drainfields, which could suggest that at some time of
the year any salt accumulations are flushed downward 15 Crosby attributes
the low soil nitrate levels to denitrification at depth. The moisture
deficit in the soil with a lack of salt buildup appears to be contradictory
~ regarding the ultimate fate of the drainfield effluent.
In 1976, a report on the water resources of the met ~politan Spokane
region was completed by the U.S. Army Corps of Engineers b This study in-
cluded an analytical investigation by Todd of the drainfield percolation
mechanism to determine if this effluent could be reaching the ground water.
~ The pur~pose of the investigation was to determine from calculations of the
evapotranspiration mechanism whether moisture is available for percolation
under suburban development conditions after evapotranspiration needs are
satisfied. Todd came to the following conclusion based on the results of
the study•
An analysis of the evapotranspiration mechanism for urban and
~ suburban land use conditions in the Spokane Valley indicates
that a significant proportion of the leachate from septic tank
drainfields, is avaiiable for percolation to the water table of
the ground water. The analysis of soil moisture behavior is
based on a conservative interpretation of data and a conserva-
tive application of soil moisture transpo,rt technology. Not-
~ withstanding the conservative approach, the analytical results
indicate a net surplus of leachate available for percolation to
groundwater.
A monthly water balance for the Spokane Valley under generalized suburban
conditions (assuming an overall gross density of three residentia1 units
• per acre) developed for the above study is included in the following table
This water balance indicates that surplus water over and above potential
evapotranspiration is available from November through April. The total
average annual surplus was estimated to be 14.22 inches, and constitutes
41 percent of the total preclpitation plus dralnfield effluent
~ The preliminary resu]ts of the ongoing "208" Water Quality Management
program for the Spokane-Rathdrum Aquifer, being conducted by Spokane County
~ 70
187
MONTHLY WATER QALANCE DATA FOR SPOKANE VACLEY UNOER GENERALIZEO SUBURBAN CONDITIONS
J F M A M J J A S 0 N D YR.
Precipi tation 3.15 2 04 1.70 1 10 1.83 1.44 .52 .65 .91 1.14 2.40 2.52 20.00
Septic Tank
Effluent, in 1 19 1.19 1.19 1 19 1.19 1.19 1.19 1.19 1.19 1.19 1,19 1.19 14.28
Potential
Evapotranspira-
tion, in 4 0 0.61 1,71 3 14 4.38 5.61 4.78 3.15 1,67 0,46 0 25,51
Actual Evapo-
transpiration,
in, 0 0 0.61 1 71 3 14 4.10 3 55 2,85 2,26 1.61 0,46 0 20 35
Moisture
~ DeflClt, in 0 0 0 0 0 0 0.28 2.06 1,93 0.89 0 0 5 16
~
oo-Soil Moisture
Storage, in 5.00 5 00 5.00 5 00 4.88 3.41 1.55 0 85 0.69 1.95 5.00 5 00 -
Snow Pack
P1oisture
Starage, 7n 3.15 0 4 0 0 0 0 0 0 0 0 0 3.15
Total
Percol ation,
in. 4 34 3.23 2 28 0.58 0 0 0 0 0 0 0.04 3 71 14 22
Source U.S Army Corps of Engineers Study
ib 0 0 0 0 • 0 0 0 a a
~
in cooperation with the U.S.G.S., U.S. Environmental Protection Agency and
the Washington State Department of Ecology, have provided some positive
indications that the aquifer is in fact recharged by water applied to the
~ area overlying the aquifer. This data would indicate that sewa4e treatment
system effluents discharged to sub-surface drainfieids is a source of ground
water recharge. The preliminary data shows a definite stratification of
Qollutants in the ground water at certain times of the year. This is a fac-
tor which Todd, in the U.S. Corps of Engineers study, considered important
in identifying drainfield percolate as a source of ground water recharqe.
~ Todd also used data indtcatYng an increase in total dissolved solids as the
ground water flows westward under the areas served by septic tanks as confirmation
of his calculati,ons showing recharge as probable. The preliminary data from the
Spokane County "208" Study and the U.SA.S. does show a moderate increase in
salt content of tFie ground water as it passes under the Spokane Valley. However,
a much larger increase in salt content appears to occur as the aquifer passes
~ under the City of Spokane and the area to the north. Crosby has suggested
that the i ncrease in ni trate and chl ori de 1 evel s as tfie aqui fer flows westerly
is due to "natural hydrogeological processes and not to seepage from septic
tanks".17
Preliminary data also indicates that some areas near the margin of the
~ aquifer, and the project site in particular, have higher salt concentrations
than does the main body of the aquifer. 6ecause of the lower flow rates and
lack of mixing near the margin the effect of surface recharge on ground water
quality may be more easily identifTed. The higher salt concentrations near
the margin may be the result of surface runoff from the adjoining hills and/
or surface recharge from the area above the aquifer.
~
Water Use
Estimated volumes of water pumped from the aquifer in 1976 by public
water supply for domestic, irrigation and industrial purposes are shown on
the fol l owing fi gure These es1V mates a re deri ved from the U. S. G. S. s urtnnary
~ of data from previous studies.
Public water supply systems pumped a total of about 30 billion gallons
(128 cfs) of water from the aquifer in 1976 for domestic use The major
part of the water (about 27.5 billion gallons) was pumped in Washington All
publicly supplied water used for domestic purposes by the population over-
~ lying the aquifer was obtained from the aquifer, except fo r a very small por-
tion (less than one percent of the total domestic use) which was obtained
from Hayden Lake, Idaho. llells are presently being constructed uhich will
replace this surface water supply with additional withdrawals from the aquifer.
The major public water supply systems are listed in the attached table.
~ An additional 22 billion gallons (92 cfs) of water was pumped from
the aquifer in 1976 for irrigation and almost five billion gallons (19
cfs) for industrial uses. Diverted from the Spokane River in 1976 were
about 24 billion gallons (100 cfs) for irrigation (near Post Falls, Idaho)
and 10 billion gallons (42 cfs) for industrial use (Kaiser-Trentvrood
cooling processes) Virtually all the water diverted by Kaiser-Trentwood
~ i s returned di rectly to the ri ver
72
~ •
189
~
Summsry of gnblic vatoe-iupply oyscemo obtatning wtas fcom chs+ oQuifor
Mater quelity
Lrcaeloa Appsoa- Approx- ENo- 3 Vreoenc
oP iaac• imste Des Chemieal sconlacd■ vacer
Kam ot .racer 5yDCEm1 vell• popu- waeer ueo o[ SCeefdasd. btumDer tsoat- .
lotion in 1976 samale~ exeoeded of mnnc
aetved (nillicns eeated2 timn
in 1976 ot exceeded
9allonn)
Cscy o[ Syokons 25/42-7 180 000 19 80a js iron 1 Chlosi•
25/43-1 8 11 nacacn
26/43-D1
!lndeta 6laetsic ttacer Compamr 25/"•8 15 16. 25 100 1 760 Sl Ieon 6
17 21 22. 27 lfanqanese 1 None
•
Oluolvad solida 1
Cicy o[ Coeur d Alonn 51/4-1 1.12 21 000 1 400 Moss-
11aC1OT
Mhatvorch Wotur Oiecriec 02 16J43-7 19 20 14 000 979 13 iron 1 9oeu
30
?aircDfid Aaa cocae 6na* 34/42-11 14 OOA 727 61 Ieci► 1 Chlosi-
natien
rora Irriqstiot► Oletracc A15 2S/40-13,15,12 12 OOa 590 37 Iraa 2
23 26 Glttate 3 Ncne
ttaehYnqtoa wacer Pcwcsr 02 25/"-20 27.28 7400 590 20 Ison ] •
29 Ccpper 1 Chlori-
4ead i asclan
►t3ohaaq[on tts wc Pavar N1 25/43-L] 27 4,800 743 40 Iron 5 CAlor►-
25/44-7 18 Dhenol• 1 notisn
Mdel It:lgaclon Oaacract •19 25/44-21. 28 4 600 83 5 Iren 1 Nane
City o! Pc,3t ?allO 50/5-1 4 900 431 Nane
IAashaaqutu 2inWe PuYer 03A c6147-14.20 70 4 500 277 9 Iran 1 Cblcri-
netion
Osclw rd Avunud IrrsEeunn Dtocryct 23/41-12 1 S00 102 24 wrsqaneao 2
06 : o44-7 Phonols 1 Bone
Grnhape Irngot&d:► niotsfct 07 25/41-23 a 200 20b 1 None 0 deae S
Ttanewood Irragstion Diotr ac !13 25144-3 3 3 600 027 8 Tron 1 None
26/44-15
Narth SFakane 2rrlgatian Dletelee 28/41-27.28 2 6Qa 174 S Hane 0 bono
Ne
E.iat Spokano tratrr osatrict a1 25113-24 2 8Q0 161 22 Iroa 5 Unno
Cortsolilated Irriyatton Dlotrict 25/45-17 2 700 134 7 Nons 0 btono
1119 (GCeQtFaCSesl
1ts@hlnqeon Macor Pavnr 038 26f63-8 10 4 400 104 6 Icon 1
ltirtqaaeae 1 Hano
tto.i• vaint Aoaaziac.op Ve 51/S-3S 36 2,200 150 None
.
lititz!►ipgnr1 Itliq.t[.tCr ,laCZCCC Alb 2S/C4-18 2 000 181 3 Pon. 0 HOt►c
Cansolidetad Irrigattwn Dlacrlcc 25/45-19 2 000 100 19 Iran 1 Heno
919 (COrbin)
Pamadaro Park Irragatien Dlatricc 25/44-5 6 2 000 92 2 dene O Bono
e17
Ysvtn Natet Dietcicl #4 25/44-4,9 1 880 406 S None 0 tlotw
Tovo ot !t►llwaod I5/44-5, 7, 8 1.800 36 1 Nons 0 !laae
Canaalidsced Irr:gatien Qiot•act 26/16•]L 1 SCD 72 18 Iraa 2
1►ly (¢asc Varay) lYnganese 1 Bnna
Censnlidutad Irci~3etion Uastraet 25/45-2 1 700 6S 2 None
0 Nano
v19 (Otii Occtards) ~
Caty of RacAdrua 52/4-31 1 ODO 161 Mitraco 2 lloao
Ptaa vi11a Estetoe 30/4-6 1 OCO 60 bcne
oa.t,isoef .ti,eor czrepary 25I44-19 1 Boo sn z Nn,,, o Na,so
Conaoiadbted Iresyoc.zn Oaoceict 29/44-7 870 sY 2 Itcn 1 None
e14 (Hnet Pasmn)
Gty ot Spiric L.bAt 5304-b 790 Si7 tionu
k.sse Grreancre• 51/5•28 600 38 liane
Kauwir Lako SL/5-19 600 40 None
Coc ultdaLoal Yszaqacaan uaatri.t 35/34-11 310 25 2 lioao 0 Korm
e19 (Casdor)
Caty aE Athvl 57/3-9 330 y0 Vanp ~
Hotttnin tro tar 50/4-1 700 20 bo"
9e .1an Pinea 51/4-33 JE 15 yono
Lllcerty Leke• Us.alicic• Co 25/45-10 15 24c1 13 17 iaon 1 ttona
Panes Vacr Satotaa 51/4-12 200 13 "am
!+leris Toalor Ccvrc 51/4-27 150 10 None
"b 1sti9etian Dietsiee 020 36/43•25 140 7 4 Iron 1 Norse
Fsnhendle Mob11e Eotatee 52/4-2= 123 8 « Rane
e1m+tain Yiev 51/4-10 124 9 None
SUn 111s Ibbile 31/4-11 L00 7 C7One
Cauntsy LYvinq 42/4-27 lOD l Haae
Re ~
ntter SO/h4 100 7 pone
Alvalls Ybtei Corporatiatf 26/43-6 97 6 4 None 0 yonr
Hoxacd xate! S2/4-5 50 2 None
Bnnao Rasd qtar 53/2•17 40 2 - yon#,
Pleasent Dralrie iaces Cavpeny 26/41-32 34 5 2 Hlrrate 1 None
Pirccraft kobile ftcr_x Park 25/44-9 Chlori-
nau¢n
HiQden Villaqs Eatntee S2/4-22 « NAnQ
UvEer mn 1.okes 53/9-36 ~tan~
-K.-ald £nw eee 51/d-12 SUbaitlIfl1QT eat yet campleted ~tCne
:anvalle Cocposstion 4104-21 S1jlailvintan nat yet caTpl^ted tens •
1 A Lev odditlonal aaull ayetena probaEly exits fhet are noe ineluded in tlee basic datn _
=Dats noe available for ldaho
3 Ch*eiesl etondarde are expleinM or plate LO
~
73
190
~
b. The Probable Impact of the Proposed Action
~
Assuming an annual use of 35,000 cubic feet per res7dential unit, the
proposed project would result in the withdrawal of about 14.9 million cubic
feet (.5 cfs) of water annually from the aquifer for domestic, sewage disposal
and irrigation purposes. Of this total approximately 6.2 million cubic feet
per year (.2 cfs) would be used for sewage disposal and u1timately discharged
~ to a drainfield above the aquifer. The later total was derived assuming 3.2
persons per residential unit at a consumption rate of 300 gallons per day per
residential unit for sewage disposal.
The anticipated water consumptlon by this project represents a very
small percentage of the total flow from the aquifer and poses no threat to
~ existing supplies. The present ground water flow is capable of serving
more than double the population now being served.
A portion of the above water consumption may be available for recharge
to the ground water system. Using a consumptive use factor of .59, as
deve1oped by Todd, 41 percent of the total water consumed would be available
~ for percolation into the ground water system. This would represent a total
of 6.1 million cubic feet per year ( 2 cfs), of which 2.5 million cubic feet
per year (.08 cfs) would be from sewage disposal systems. If this entire
amount of water were to percolate into the ground water it would represent
less than one-tenth of one percent of the total flow of the aquifer.
~ It is not anticipated, based on the above, that the proposed project
will have any perceptible effect on the quantity of ground water. The pos-
sibility of ground water quality degradation as the result of percoiation
of sewage treatment system effluent is discussed in the sections on ground
water qualitv and sewaqe treatment.
Because of the location of the Qroject slte over a Qortion of the a~uifer
~ where flow rates are Qresummed to be low the Qotent~ia1 impact on qround-
water quality from project related effluents mayVbe more significant, as
the percolate would not be mixed and dilluted to the extent that it would
be in the main body of the aquifer
It is not anticipated, based on the above, that the proposed project
~ will have any perceptible effect on the quantity of ground water The pos-
sibility of ground water quality degradation as the result of percolation
of sewage treatment system effiuent is discussed in the sections on ground
water quality and sewage treatment.
c Measures to Mitigate Adverse Impacts
~ None.
d. Unavoidable Adverse Impacts
None
~
74
~ 1'91
~
3.8 Ground Water Quality
a. Exi sti ng Conditions ~
Pursuant to section 1424(e) of the Safe Drinking Water Act 19 the
Federal Environmental Protection Ag ency (EPA) has designated the Spokane-
Rathdrum aquifer as the sole or principal source of drinking water for
approximately 338,000 people in a portion of northern Idaho and eastern
Washington. The designated "sole source" area includes the aquifer recharge
and streamflow areas shown above. The sole source deslgnation A.
the ~
aquifer was based upon the following determinations by the EpA:
1. The Spokane Valley-Rathdrum Prairie Aauifer is the
"sole source" of high qvallty drinking water for over
338,000 people including cities and towns and people
u"sing individual wells. Current water supply treatment •
practice is limited'to minimal disinfection for some
systems and no treatment for other systems for dri nking
purposes, and there is no alternative source of drlnking
water supply which could economically replace the Spokane
Valley-Rathdrum PrairTe Aqulfer.
2. The Aquifer is vulnerable to contamination through ~
its recharge zone primarily because the glaciated soils
which are highly ,permeabl e. There i s evidence of 10-
callzed contamination from Tndustrial sources and septic
tanks. Since contamination of a ground water aquifer
can be difficult or impossible to reverse, contamination
of the Spokane Valley-Rathdrum Prairie Aquifer could pose ~
a significant hazard to those peopl e dependent on the
aquifer for drinking purposes.
The sole source designation will require projects which receive Federal
financial assistance and have a potential for polluting the aquifer be
subject to a special EPA pre-construction review. The basis for the review ~
is whether or not the risk of contamination of the aquifer created by the
proposed2?roject is sufficient to create a"significant hazard to public
health".
Water Qual ity Standards
Federal standards for drinking water quality have been established ~
by the EPA. The following table shows the maximum allowable contaminant
level (primary stekndard) and the proposed secondary standard for each po-
tential water quality contaminant. The primary standard establishes the
maximum allowable contaminant level for chemical constituents of drinking
water which may affect the'health of consumers. The secondary standards ~
are only guidelines and deal with the aesthetic qualities of drinking water.
The inorqanic constituent of primary concern in the aquifer is nitrates.
Excessive concentrations of nitrate in drinking water produce a bitter
taste and may cause physiological distress. The nitrate ion has also been
implicated in the occurrence ofinLIAhemglobinemia (i.e., "Blu e Baby" syndrome) ~
Heavy metal such as lead, copper, mercury and cadmium can be toxic in
excessive concentrations.
~
~ WATER QUALITY STANOAROS
Chemical Standards
Maximum Proposed
Constituent Contaminrt Seconda2y
Level Level
~ Iron
0.3 mg/L
Manganese 0.05 mg/L
Sulfate 250 mg/L
Chloride 250 mg/L
~ Fluoride 2.0 mg/L
Nitrate 10. mg/L
Total dissolved solids 500 mg/L
PH <6.5 or >8.5
~ Color 15 platinum
cobal t
units
Turbidity 1 to 5 JTU
Foaming Agents (detergents) 0 5 mg/L ~
~ Arsenic 0.05 mg/L ~
Barium i. mg/L '
Cadmium 0.010 mg/L
Chromium 0.05 mg/L
~ Copper 1 mg/L
Lead 0.05 mg/L
Mercury 0.002 mg/L
Selenium 0.01 mg/L
~ Silver 0.05 mg/L
Zi nc 5 mg/L
Endrin 0 0002 mg/L
Lindane 0.004 mg/L
~ Toxaphene 0.005 mg/L
Phenols3 0.001 mg/L
1National Interim Primary Drinking Water Regulations (U.S Environmental Pro-
~ tection Agency, 1975). Primary regulations are those which deaT with constituents
that may affect the health of consumers
2National Proposed Secondary Water Regulations (U S. Environmental Protection
Agency, 1977). Secondary regulations are those which deal with the esthetic
3
qualities of drinking water. These are guidelines only
~ Chemical standards for phenols are not included in the primary or secondary
regulations Because of the frequent use of phenol by industries situated above
the aquife,r, the available phenol data is included and referenced to the Public
Health Service (1962) recommended limit of 0 001 mg/L
Source United States Geological Survey
~ 76
193
~
Ph.ysical and Inorganic Chemical Characteristics
The available water quality data indicate that ttie aquifer generally ~
yi el ds rrater of excel l ent qual i ty. A surronary of the chemi ca 1 qua 1 i ty o,f
the water from the aquifer is included 1n the followinq table. Only those
constituents for which a federal primary or secondary standard have been
established are included in the table. This table nepresents a summary of
about 9,6on analyses from 400 ground water sTtes 1 ocated throughout the
aqui fer. ~
(1) Contaminant Levels in Excess of Drinking Water Standards
The maximum contaminant level of five of the eleven characteristics for
which a primary water quality standard has been established (those that may
affect the health of consumers) have 6een exceeded in a small number of
samples from the aquifer. The maximum contaminant level of barium, cadmium, ~
mercury, selenlun, chromium and silver were never exceeded. Flouride,
nitrate, turbidity, arsenic and lead maximum contaminant levels were exceeded
in a total of 16 analyses, which constitutes less than one-half of one
percent of the analyses for these constituents.
The recommended levels of 8 of the 10 characteristics included in the ~
proposed secondary levels, which deal with those characteristics that may
affect the aesthetic qualYty o,f water, have been exceeded in a small number
of samples from the aquifer. The recommended levels of sulfate and foaming
agents (detergents) were never exceeded. The recon~nended levels of manganese,
chloride, total dissolved solTds, pH. color, copper, and zinc were exceeded
in less than two percent of the samples. Iron exceeded the recommended ~
level in almost eight percent of the samples tested. Proposed secondary
levels were exceeded a total of 87 times (1.4 percent), frvm a total of more
than 6,300 tests.
The fo11 owi ng tabl e 1 i sts the ground water si tes where the primary or
oroposed secondary drinking water standards have been exceeded. Five of the ~
sites where drinking water standards have been exceeded are located in the
general vicinity of the proposed project site, as shown in the following
figure. At site 25144-26L1 (Vera No. 4), which is located 1/2 mile north
and 1-1/2 mile east of the project site, the standard for,nitrate, flouride
and manganese were each exceeded once. At site 25/44-29A1, Washington ldater
Power No. 2-4, which i s 1 ocated about one mi1 e north and 1-1/2 mi 1 es west ~
of the project site, the standard fo r copper and lead were each exceeded
once and the standa rd for iron was exceeded twice. At three other sites
(25/44-27E1, -27L1 and -28L1), located within a,bout 1-1/2 mile of the
project site the standard for iron was exceeded a total of three times.
The iron standard~ is a prooosed secondary standard set to deal with those
characteristics which may affect the aesthetic quality of water. As,ctis- ~
cussed above, iron in high concentrations in drinking, water has a tendency
to discolor the water and cause a staininq of porcelain. Occasional vio-
lations of the iron standard occur throughout the aquifer and the magnitude
and frequency of violation in the vicinity of the project site are not
unusual.
~
77 ~
194
~
~
Summary of ground-water-quality data
Chemscal standarda
Numbez Dlumbes maximum Proposed Number Number Maximuin
of of coatam- secoada~y orf sitee of value
Constituentl sitea sample3 iaant2 level3 exceedinq samples observed
~ tested tested level (EFA chemical exceeding
r (EPA 1977) standard chenucal
197S) e tanclard
Iran 212 758 0.3 mq/Y. 40 58 78 mg/L
Manganeae 200 700 0 OS mg/L lZ 12 1 6 mg/L
~ Sulfate 168 S96 250 trtq/L 0 0 210 mg/L ~
Chloride 364 1,115 250 mg/L 1 4 >l, 000 nbg/i. ,
Pluoside4 210 706 2 0 mg/L 2 2 3 2 mg/Y. '
Nitrate 247 940 10 mg/L 6 11 28 mg/L
Total dissolved
~ solids 364 1,087 500 mg/L 3 3 539 mg/L ~
pH 229 918 <6 5 or >8 5 3 3 Ranqe
6 2 io94 ~
Color 126 484 15 platiaura 5 5 21 units ~
cobalt
units ~
~ Turbiditys 139 462 1 to 5 JTU 1 1 10 JTU
Foanu ng Agente -
(detertlEnts) 25 77 0 5 mg/L 0 0 0 1 mg/L
Arsenic 89 185 0 OS mg/I. 1 1 0 064 mq/Y.
Bariwe 3 3 1 mg/L 0 0 0 070 mg/L
Cedmium 112 336 0 010 mg/L 0 0 0 005 mg/L
~ Chrom3um 93 186 0 OS mg/L 0 0 0 03 mg/L
~
Coppsr 97 210 1 atg/I. 1 1 5 2 mg/L
Lead 110 235 0 OS mg/L 1 1 0 42 mg/L
Mercury 99 196 0 002 mg/Y. 0 0 0 0002 mg/L
Seleniwn 3 3 0 Ol aig%L 0 0 <0 010 mg/L
~ Silver 3 3 0 OS mg/L 0 0 <0 005 mg/L
Zinc 97 395 5 mg/Y. 1 1 7 5 mg/L
Enari.A6 17 17 o oooz mg/z. o o <o 062 mg/i.
Lindane 17 17 0 004 enq/Y. 0 0 <0 001 mg/L
TwcBphene6 1± 17 0 005 mq/Y, 1 1 0 060 mg/L
~ Phenols7 24 77 0.00 mg/L 16 18 15 mg/Y.
~
Source• U.S.G.S.
~ 78 '
195
`
AecorOa of locatioae vhere conscitn,ent• Yn gsound-wtor samptes Aav* exceeded chomieil •wiMatdo ~
Coitstiwene Site Dste Slu pata SiCe Oate
nunDos eaapled Valua auaber camplad vaiue numWc aaapled Value
Isan 25/42-11P11 11-22-65 0 58 mgA 24/44•1562 5•12-70 1 1 oq/L 26/45•23F1 0-19-64 1 1 mq/f.
24/43-23A1 5-07-70 43 ll-14-71 32 -24p2 10-27-61 1 2
12-13•71 32 -17M1 7•02•75 40 4-29-64 61 •
1-18-72 44 -776t 7-17-72 18 -25C1 5-07-74 35
7-24-72 71 ~-17L1 5-11-70 14 -34[.1 1•27-71 1 0
9-14-12 70 -28L1 5-10-71 34 -36tt1 6-26•73 2 b
-2401 5-13-70 62 -2011 2-11-72 12 9~~~73 sa
12-31•71 ls 3-31-72 76 12-18-71 1 S
6-12-72 36 25/45•7R7 4-27•71 90 26/46-711lI 5-1e•70 42
-24I.1 E•14•72 38 -1°D1 12-11-11 73 12•14-71 40
3-31-12 sb -1°al 2•14-72 34 50/4-3JUDI 6-23•76 78
25/44•381 10-09-75 ]8 8-14-72 32 50lS-488111 3-16•76 6 6
-BU1 5-12-70 48 -1&Rl 7-24-72 68 4-24-76 79
-3J2 4-16-71 38 26/42-12L1 5-12-64 32 6-10-76 lb •
-IIR 4-16-71 i 0 4-15-75 72 SL/5-29GA1 5• •76 60
-12J11 5-01-75 31 26/47-6Q19 10-1ri j2 44 6- -76 SO
•17D 5-01•75 12 -6Q39 10-18-7t 34 -311DC1 6-23•76 l 6
-13M1 5-15-70 44 -14A1 7-09-75 36 -339=1 5-25-76 13
-15B1 2-16-72 32 -30l1 9-30-70 90 S3/2-79AC1 10- •76 70
-31►1 5-38-7S 31
liatuqanes• 35l47-1381 3-20-74 u 14 mq/L 15l41•7C1 5-14-70 u 652 iag/L 26/43-884 5-12-64 046 aq/L
25/13-12H1 6•19-73 30 -1561 7-02-75 060 26/46-3lxl S-14-70 060
25/44-1Jl 11-09•75 1 6 -26L1 5-22-72 060 50/4-3MD1 6-23-76 1 s
-67►1 10-10-72 052 26/42-12L1 5-15-75 060 54/2-74 5-08•74 21 •
Chloride 26/43-34P1 S-14-55 370 rsi9/L
5-:s-ss 470
6-13-45 700
6-14-SS 211 OUO
vluoriae 25/44-26L1 12-13-71 2 7 my/L 52/4-2wc 3-07-74 7 2 aeg/t.
Nitrate 25/44-:6L1 11-04-70 16 mq/i. 52/4-31CAD1 7• •TS 26 teq/L S4/2-34LAC1 10- -75 14 ag1L
(a• Di) 2-14-72 11 52/5-25DCD1 7- •75 28 7- -76 12
26/44-3201 9-27-71 11 54/2-34cAC1 6- -75 23 8- -76 11 •
Sl/1-7588i►1 10• -76 11 10- •76 20
Totel 2s/44-2Q1 6-10-70 577 mg/Y. 25/44-17A1 6-06•74 S39 toq/L 53/4•210J1Cl t- •75 SOB iqq/L
dkssolvod
tdlidr
pil 25/43-2401 4-13-70 6 8 units 2g/4S•14N1 10-:e-59 9 4 units 26e03-20J2 12•26-62 9 0 uni[a
ColoeI 25144-4J1 S-04-71 21 PM 25/44-HD1 4-19-71 17 PCtt 26/41-321t1 S-OS-71 =0 KV
56t1 S-14-71 YO -18i1 S-10-71 16 ~
4vrbidicy~ 26043-aQls 1-17•73 10 s!O
J►raentc 26/43-791S 9-26-73 0 6b4 eng/l.
Copprr 25l44-297►1 9-24-72 S 2 iaq/L
Lead 25/44-29A1 9-14-72 0 02 mq/L
81nc 32/4-17J10C1 B- -75 7 S aog/L
TwmpAono 26102-12A1S 9-28-73 0 060 rtg/t. •
?Mnnl• r: 43-141Q 6•27-73 0 002 engOt. 25/80-19D1 4-26-73 0 002 rteg/L 26/42-27111 6•29-71 0.012 ay/1.
25/44-1J1 11-17-75 15 2S/45-4t.3 6-06-74 002 76143-5L1S 6-29-77 002
•201 6-27-73 007 -14[4l 1-2*,-73 004 -7819 6-29-73 004
6-10-74 002 26/4:-l1Jl. b•27-77 ODS -16s 6•10•74 QOZ
-7CI 9-25-73 002 -1.A1S 6-2v-73 003 26/45-33r1 6-28-73 003
-1802 6-27-73 002 9•26-73 004 -]6G1 9-26-73 002
t PCU - plncaeum-cobsle w►acy
2 J'!t! o .TeCksnn turDidity uruu ~
~
Source• U.S.G.S.
79 ~
196
N111JS115 1VI I vd1n N03
rc pqn CLR 49
VP rR~ ~r~uc~ia
` f uvcN 9 ,
N
F Wt1Al 4RkV ROAII
5 ~
A 0
~-►-~-.Js ~rvc CLR ~g TDS IWn
ra u i%%GIJR ; Pld
~
61 ~ PN 'C R ~
~
--Z" I 4~u~ ' '01 @ F@
5 2 ~ Fe
~
tmuiv~s ~4 ~
5~ F@
~ o
a ~
J
TNLA~ AYF i ~ PN 47
~ ~ ~ .
~ r
! pN ~ ~ .
WAY AYI
P0 A6i9~ CLR ` Fe n
°6 ~Fe
`
SP0.~('UIt~AVil ' I SFAAGI(L A41 SYqAIiUC AVI _
~ oo Fe uiti~i~~AN OPronruHin ~ vrkanALi
v o Fe P(d =
D o m
.
o ~
1 -A- • ~ ~ ~ uillru
C~ I11h Ap
i
F8 S3
.
~ ~b F8 0 ~ u~d bc~IwW imu~tn
11ih Arc a CK
~ en ~ beatuun q~hmo ~puunA trtco
Qo~ v O C ~ rc dmWj Ea%ntm,ladihcmid
W I j ~ m re ' umlyJ~ u~ Icu OMhs
dfln
~ Fe M1lp Nrnyiucer
I~
c,LrHaasE Fe F ~~Mah
~1EAm
I' ! oA As N 4lui~tWe
I )II AM 1//~!///Ii
T4
O 111~11xk
3 ~ IUSIWuIJlvdvtWuJWi
~ cxouna wnruR QunLirY srANUAxus ;;IsR`;: ~
i VIpI.ATION Sll'FS ol ol dl.4~~~ s ~ t,N~i~r
iiiii./
rs/ .a ~
i i .
iNY~edoh
?
~ N
N, IItDAne ^ 01~4A~r
SCAI I '
J4UIICI ti .7.1C. S
~
Of the remaining violations of drinking water standards that have
occurred in the vicinity of the project site, several are suspected to be
the result of analytical error or contamination of the sample. Because ~
of the large number of analyses and because the data were obtained from a
wide variety of sources representing different sampling techniques,
analytical methods and data reporti,nq practices, the possibility exists
that inaccurate data is included in the tabulations included above and
elsewhere in this report. The USGS has specifically indicated in its recent
report on the aquifer that the vtolation of the flouride standard reported ~
at site 25/44-26L1 (Vera No. 4) and the high lead and copoer concentrations
reported at site 25/44-29A1 (WWP 2-4 ~?ay be inaccurate due to analytical
error or contaminatian of the sanple. I-Jhile not mentioned by the USGS
the reported nitrate level in excess of the standard at site 25I44-260
(Vera No. 4) also appears suspect. This well was tested for nitrate 11
times between 1970 and 1974. Of tCiese tests, 15 showed values of nitrate ~
of 2.9 mg/1 or less, one showed 3.7 mg/1 and one showed 11 mg/1 exceeding
the maximum contaminant level of 10 mg/l. Qecause it is incompatable with
the remaining data, the extreme value may represent analytical error or
contamination of the sample.
(2) Historical Water Quality Trends ~
A tabulation of data from 11 ground water sites located in the general
vicinity of the project sTte are included in Appendix 6 to this report.
This tabulatlon includes all ava11a61e data on the chemical quality of the
water from these sites. Sample results from the Spokane County "208"
Water Qualjty Management Program through June of 1978 are included as ~
is data through December 1977 from the on-going USGS sampling program.
Detailed comparison of this data from one time to another may be misleading
because of changes in sampling and analytical methods over the years have
qenerally improved the accuracy of the result. Oata reported prior to
1970 is of less value than that reported subsequent. The data considered
most reliable are the "208" study results reported by the laboratory at ~
Washington State University and the results of the on-going USGS monitoring
program. The "208" study reported "field data" is less reliable because
it is generally the result of less accurate and reliable analytical methods.
In its interim report the "208" study reports significant deviations between
nitrate 1evels in duplicate samples run at Washington State University and
the field results reported by Spokane County. Statistical correlations have ~
b = develoaed which makes this data useful tor comparative purposes
The available water quality data show that while the concentration of
any one chemlcal constituent may vary from sample to sample at a particular
site, no 1 ong term trends of chang ing water qual i ty are apparent. A 1 i sti ng
of historical nitrate levels from selected wells near the project site from •
about 1950 to present are shown in the fo11ow1ng table. No trend of changing
nitrate Tevels is apparent from this,data. A siNlar conclusion was reached
by the USGS in its recent report on the aquifer.
(3) Water Quallty Variations lAJithin the Aquifer
•
In general there is little change in the quality of the ground wa ter
from sampling points near the ltashington-Idaho State line to the outlet
springs north of Spokane except for salt content 24 The available data indi-
cates that there is a moderate increase in salts content in the aqulfer as
81 ~
198
~
Historical Ni trate Leve1 s From Sel ected We11 s Near Project Si te
Total Nitrate, mg/1
~ Well Site 1938/521 1971-722 19773
WLJP 2-4 2.6 2.7
Modern No. 9 1.9 2.5
Vera No. 4 2.8 2.6
• WWP 1-4 5.2
Mlodern No. 1 2.4 1.0 .9
Vera No. 1 1.5 1.3
1 Weigle and Mundorff
~ ZDSHS
3208 Field data corrected 6y .75.
it passes from the State line through the Spakane area. The following table
~ shows a generally Tncreasing concentratlon nf salts at selected cross-sections
of the aquifer progressing from east to west. Conductivity, nitrate and
chloride concentrations for the various cross-sections of ttie aquifer based
on data from the on-going USGS study are shown on the followinq figure.
This data shows a very slight increase in salt content as the aquifer
~ passes under the Spokane Valley from State line to about Opportunity. Over ,
th7s section nitrate levels increased from .9 mg/1 to 1.2 mg/1 while con-
ductivity (a generai indicator of dissolved sol ids) increased from 281 to
292 micromhos. From the area near Opportunity to the east city limits of
Spokane the quaiity of the ground water, in terms of salt content, improves
somewhat. Over this section conductYVlty, chloride and sulfate levels all
~ decreased slightly while nitrate levels renained about constant. The interim
report of the "208" l-later Quality Management Progra m indicates that this
improvement in ground water quality near the east city limits of Spokane
may be due to influence from the Spokane Ri er which discharges to the ground
water along the Upriver Dam backwater area.~5 The most substantial increase
in salt content occurs between the cross-section at Pa rkwater and the one
~ at the north city limits of Spokane. Over this section conductivity, nitrate
chloride and sulfate concentrations all show an increase. Nitrate concen-
trations increase from 1.2 to 2.6 mg/1 and chloride levels go to 4.4 from 2.1
mg/1.
The ground water quality data from the on-going USGS study of the aquifer
~ used to show the variation in qround water qual7ty at selected cross-sections
of the aquifer is included in detail in Appendix B to this report. A similar
analysis which has been made by the "208" blater Quality tlanagenent Program
using "208" field data results, which generally confirm the observations
made above, is also included in Appendix B.
~ The source of the increase in salt concentrations as the aquifer passes
through the Spokane area is undeterminediat this time. Crosby has noted that
some increase in dissolved solids concentrations could be expected due to
~ 82 '
199
Uariation in Ground Water Quality at Uarious Aquifer Cross Sections
Contaminant State Line Otis Orchards Opportunity Parkwater North City Limit
Conductjvity,
micromhos 281 255 292 251 360
Nardness,
mg/1 as CaC03 148 143 155 141 2n4
Chloride,
nig/ 1 .92 .99 2.1 1 6 4.4
Nitrate,
mg/1 ,93 1,04 1.2 1 2 2.6
N Sulfate,
°o w mg/1 11,8 12.2 12,5 12.4 20,9
Approximate distance
from State line,
in miles 0 4.0 8.0 11,.0 17 0
Source. U.S.G.S. monitoring data, 5/17 through 12/77.
•
• 0 0 • 0 0 9 0 0 0
1 ~
~
I 0 ~
tin Stoawwrrwu~ /
•
v~ww,r 281
N►nc Mde ~ltird o,~„ au / 93
J~
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natural geologic and hydrologitc mechanisms. This would include the possi-
b11ity that some salts may be dissolved from the soil materials that the
aquifer passes through. This explanation is supported by the lack of any
~ lonq term trends in water quality noted a6ove. Surface recharqe from the
hills adjoining the aquifer or from the area above the aquifer is another
possible explanation.
A review of the data included Tn this report indicates that a variation
in water quality exTSts in the area soutfi of Opportunity and in the general
• vicinity of the project site in comparison to the main body of the aquifer
to the north. This area 1s located on the south margin of the aquifer
where, as indicated a6ove, the transmissivlty and flow of the aquifer is
apparently lower than irn the main 6ody of the aquifer. Data from three
ground water sites in this area (25/44-26L1 (Vera No. 4), 25/44-27E1
(Modern Noo 9), and 25/44-29A1 (I4WP 2-4)) whYCh provide the most complete _
~ and long term water quality records in the area show higher chloride and
nitrate salt concentrations than the main 6ody of the aquifer These ground
water sites also show higher conductivTtles (an indicator of salt concen-
tration) than do sites to the north. The following two figurtes show the
somewhat higher nitrate levels found in the general area of the project
site conpared to the area to the north. Thiobservation is,noted in the
~ Spokane Co`unty "208" Program interim report ~6 and is confirm,p~ by the
preliminary data from the on-going USGS study of the aquifer.27 It is
suggested in the "208" Program interim report that this variation may be ~
due to a combination of ground water recharge from sources above or
adjacent to the aquifer in these areas and the lack of mixing due to lower '
,
aquifer flow rates near the aquifer margin.28 The preliminary "208" data ~
~ resuits indicate that the aquifer may be relatively sta4nant in the
vicinity of the project site and that pollutants that reach the groundwater ~
in this area are only partiall.y flushed out.
The USGS and the Spakane County "208" 6laste Water t•lanagement Program
in their on-going monitoring program have coliected and analyied a large
~ number of ground water samples from depth selective wells. These wells
allow the collection of ground water samples at various levels below the
surface and provide data on the variabiiity of ground water quality with
depth. The depth selective samples are collected b.y the "208" study staff
but are analyzed independently by both the"208" program and the USGS. USGS
data from 13 depth selective wells are included in Appendix B and includes
~ the results of samples collected from May through December of 1977. Results
of the Spokane County "208" depth selective data are also included in ~
Appendix B. The location of the depth selective ground water monitoring
sites are shown on the following figure. ~
The results of the depth selective sampling durin4 the June-December
~ 1977 period indicate that the ground water generally is of uniform quality
over depth. Of the 13 monitoring sites only two showed any indication of ~
stratification of contaminants. The most clear cut exception occurred at
site 25/44-17R1 (Balfour Park). At this site depth selective samplings were
made by the USGS on four separate occasions. The results are shown on the
following table. The samples collected on October 10, 1977 indicated de-
~ finite stratification of salt content Chloride concentrations were found
to vary from 6 4 mg/1 near the top to 1.7 mg/1 at depth. The results of
~ 86
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Graund Water Tdentifier Sampling SampZing Canductivity aissaived Dissalved
Site Number Date Depth (micromhos) Chlaride Nitrate
(m91L) (m91L)
• 208 Balfour 25/44-17RI 71-05-1$ 77 - 1.6 1.2
Park 76 - 1.6 1 2
79 - 2.6 1.4
83 - 2.4 1.4
98 - 4.7 1.5
118 - 1 5 1.3
• 77-08-03 70 309 1.7 .67
74 312 1.6 .94
88 310 1.7 1.1
114 360 1.8 1.2
I f-VV+05 70 258 2.2 I• L
74 249 1.8 ■ f 2
88 254 1 V 1.3
114 25~ 1 6 1 3
77-1 0-13 77 375 6 4 -
82 350 5 8 -
87 300 3 1 -
92 275 1.9 -
~ 113 250 1 l -
78-2-1 6 73 365 18 6 1.9
76 330 13 1 -
82 294 7.8 1.5
92 280 5 0 -
113 - 2.7 -
~ (8-3-`7 73 295 12Y S 2.3
76 295 9 1 -
82 250 3.0 1.6
92 250 2.8 w
112 240 1.9 -
78-5-1 73 300 6.5 1.9
~ 76 290 5.2 -
82 250 2.2 1.6
92 250 2 8 -
112 240 I 9 ~
f V#6-1Yd 73 255 3.4 1 7
76 255 1.8
~ 82 250 1,7 1 6
92 250 1.3 1.5
113 250 1.3 -
~
♦
90
207
i
~
the depth selective sampling and analysis during the January-June 1978
period showed some stratification of pollutants at a7most every monitoring ~
site At any particular site it appears that the stratitication ot
pollutants is seasonal in nature indicating that recharge to the aquifer
in these areas occurs seasonally. This data supports the conclusion that the
qroundwater is recharqed by surface and sub-surface effluents discharged
over the aquifer.
~
Coliform Bacteria
A large number of bacterTOlogical tests have been run on ground water ~
samples from the aquifer and the results are included in the files of the
Washington State Department of Socral and Hea1th Services and the Spokane
County Health District. No summary of these data is oresently available
No attempt was made to ta6ulate these data as part of this report because
the vast majority of analyses reflect the sanitary conditions of the wells
and distribution systens and generally are not indicative of the bacterio-
1 ogical qual i ty of the aquYfer.
~
Coliform bacteria have been identified in water samples from the aquifer
at a number of sites. In the past at least four cases of coliform bacteria
problems have reportedly occurred. In these above cases, it is not known
if the observed coliform bacteria were present because of contaminat7on of
the ground water or because of poor well construction. •
A large number of coliform 6acteria analyses have been run as part
of the Spokane County "208" tJaste Water Management Program. The results
of these coliform bacteria analyses have been consistently negative from
all sampling sites.
4D
b. The Probable Impact of the Proposed Action
The development of the proposed resldential developnent project impacts
on ground water quality may result from the following sources: (1) waste
water collection, treatment and d,YSposal facilities; (2) storm water drainage;
(3) sol id waste disposal methods; C4) chemTCal transport storage and use; and ~
(5) disruption and covering of soil due to construction activities.
Percolate Dilution
As noted above the Spokane-Rathdrum aquifer is a very dynamic ground ~water system. It has an estimated average flow rate of 1320 CFS and moves
at an average velocity of a6out 100 feet per day. The potential recharge
of the aquifer that would occur from waste water disposal drainfields and
precipitatlon over the aquifer is a very small percentage of the total
aquifer flow as noted in the previous section. Any contaminants that are
carried to the ground water by percolation of these waters would be subject
to substantial dilution. First, d rainfield effluent waters would be diluted •
91 ~
,
208
~
by the relatively pure water appi ied to the surface area above the aquifer
by precipitatlon and domestlc irrlgation. Todd in his study of the aquifer
has estimated that drainfield effluents constitute approximately 12 percent
0 of the total water applie~9to the su rface area above the aquifer in fully
develaped suburban areas. Taken over the entire Spokane Valley the per-
centage would be much less. The following ta61e, adapted from Todd,30 pro_
vides a summary of annual water balance and percolate water quality values
for the Spokane Valley under subur6an development conditions for the year
1975 and for the year 2020, assuming a population increase of 54 percent
~ during that period. ThTS analysrs TndTCates the substantial dillution
of drainfield effluent that takes place, as the estimated total dissolved
solids content of the percolate is 302 mg/1, a value substantially below
the spring water standard of 500 mgjl. A similar analysis fo r the year
2020, assuming a 54 percent increase in population (and drainfield effluent)
indicated that the quality of the percolate water will remain almost un-
~ changed. Todd, in his analysis of the aquifer comes to the following ~
conclusion:
The analytical results of the forecast lmpact at year
2020 when compared with the present impact, both measured
in terms of vol ume of 1 eachate and dissolved sol Tds con-
G~ centration, indicate tFiat the present impact on ground
water quality is already a significant proportion of the
ultimate level.
.
In addition to this d111ution that occurs as the result of percolation ~
of precipitation and irrigation water, the entire percolate will be diluted
~ as it reaches the ground water and i s mixed wi tFi the mai n fl ow of the aqu i fer .
Because of the hvdroloqv of the aQUifer in the vicinitv of the oroject site
it 1s probable that less mixing and d1lution occurs in this area than in
the mai n body of the aqui fer. The effect of project re1 ated effl uents
on groundwater qualit,y could be more significant in the vicinityo uf the
project site than i n the mai n bod.y of the aqui fer.
~ Waste Water Collection, Treatment and Disposal
The following section on Sewage Treatment discusses the probable en-
vironmental impacts from project related waste water collection, treatment
and disposal facilities. This includes a discussion of the probable impact
~ on ground water quality.
Storm Water Ora i nage
As discussed in other parts of the EIS the surface water runoff from
the project site will be disposed of on-site through the use of a systen
~ of catch basins and dry wells. No provisions are made for the treatment of surface water drainage. It can be expected that surface water runoff
from the project site will contain minor amounts of some ground water
contaminants. These would include suspended solids, petroleum based hydro-
carbons, dissolved inorganic salts (for example lawn and garden fertilizers)
and herbicides and pesticides used for domestic purposes. The majority
~ of the cantaminant are subject to substantial removal as the storm water
percolates through the soil column above the ground water. Soil systems do
not generally retain anion`s includ7ng nitrate, chloride, sulfate and
42
209
~
~
Summary of Annual Water Balance and Percolation Quality Values
for Spokane Valley Su6urban Conditions
1975 2020
Mean Annual Precipitation, Tn. 19.5 19•5
Septic Tank Effluent, in. 3.95 6.24 ~
Lawn Irrigation, in. 8.05 10.09
Agricultural Irrigation, in. 0.72 0.21
Total Appl ied Water, in. 32.22 26.14 ~
Percolation, in./yr. 11.11 15.39
TOS of Percolation, mg/1 302 304
Source• Todd, U.S. Army Corps of Engineers.
~
~
~
~
93 ~
-
210
~
bicarbonate. These dissolved inorganic material will move with the percolate
waters and may pose potentlal for ground water contamination
Solld Waste Disposal
~ As noted in the section on solid waste disposal below, it is estimated
that the proposed project will generate approximately 1,100 tons of so1Td
waste per year. Disposal of this solid waste would occur at existing County
managed sanitary landfills. The majority would be disposed of at the County
landfill at Mica, Washington. It is not anticipated that the solid waste
~ generated by the proposed project would generate any significant or unusual
amount of toxic waste. If the proposed sewage treatment faci_lity 1s operated
and maintained by Spokane County it is probable that the sludge from the
treatment piant will be disposed of at this site. The Mica landfill site is
shown on the following map. It is not located over the aquifer recharge area
but is located in the designated streamflow area. This landfill takes
~ place in an abandoned c7ay open pit mine site. This clay surface around the
landf111 forms an impervious surface which provides a barrier to leaching of
polluted water from the landfill site. Leachates from this landfill site
does not pose any threat of ground water contamination.
Cheinicai Storaqe, Transport and Use
~ As indicated elsewhere in the EIS space heating within the proposed
project site will be exclusively by natural gas or electricity. It is not
anticipated that any on-site storage of fuel 011 or petroleum products will
occur on the project site. Thus a threat to ground water quality from the
accidental spillage or leakage of these materials does not exist.
~ It is anticipated that by its very nature the proposed project would
result in the use of fertilizers, pesticides and herbicides for domestic
yard and garden use. These materials whi1e potential ground water pollutants,
would not be used intensively enough to pose a threat to ground water quality.
Proximi ty to Water Supply 6Je11 s
~
The location of water supply wells in the vicinity of the project
site are shown on the following map. The water table gradient, in this area
as estimated by the USGS, indicates ageneral groundwater flow to the north-
west as shown on the map. The preliminary results of the "208" study indicate
that the hydro7oqy of thls area is very complex and that the direction of
~ flow varys seasonall,y. There are several wells located in close proximity to
the project site and the proposed drainfield 7ocation Some within 1/4 mile
of the drainfield location. 6ecause of the proximit,y of these wells and the
stagnant fiow conditions that are indicated in this area the possibilit.y of
some si4nificant localized impact on qroundwater quality cannot be ruled out.
~ c. Meas ures to Mitigate Adverse Impacts
The potential impact of this project could be mitigated by reducing the
density of the proposed project Th1s would have the effect of reducing
proportionately the level of contaminant that must be controlled, treated
and/or disposed of on the surface above the aquifer. Lowering the density of
~ the project, however, may alork against an ultimate svlution to the problem of
ground water contamination from drainfield effluents Low density develop-
ments will be substantially more expensive to sewer if it is determined
94
•
211
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~ _ 14unJ~~y ludnUa . ~i //l~I/ _
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SOUNI.I U S L S
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at the completion of on-going studies that a central sewage treatment
facility is needed for the Spokane Valley P_reliminary indications are that
communit.y collection and treatment of_ sewage from the valle,y in some form
~ will be recommended. The Spokane Count,y Commissioners have developed
a draft wastewater treatment polic,y that provides for the construction of
a sewer intercepter line from the City of Spokane treatment plant alonq
Spraque Avenue to Libert.y Lake In order to make sewering of the valley
economically feasable it wtll be necessary that higher density development
in the valley be allovied and encouraged. A reduction in the density of the
~ project while havin4 short term benefits would make the ultimate sewerincL
of the valley more costl.y. Continued low densit.y development may make
sewering econi mical ly prohi bitive
The potential of project related drainfield or surface water effluent
contaminating the ground water could be mitigated or prevented by the
~ operation of monltoring wells between the contaminant source and drinking
water supply welis. These wells could be used to identify water quality
trends or p'roblems at the earliest possible time
d. Unavoidable Adverse Impacts
~ The possibility that some dralnfield o r surface water effluent will
,
reach the water table and carry some contamrnants to the groundvrater cannot
be ruled out. The extent or magniFtude of this contamination is unknown
at this time and is the subject of several on-going studies. The proposed
project provides the flexi6ility to meet future waste water treatment needs
as they arise.
~
~
~
~
~
96
~
213
~
3. 9 P,ubl i c Water Suppl ies ~
a. Existing Conditions
Sewage Collection, Treatment, and Disposal Facilities
In 1976 water was pumped from the aquifer at a rate of about 146 cfs ~
for domestic and industrial uses. After being used, about 64 cfs (44 per-
cent) of this water was treated in municipal or industrial sewage treatment
plants and then discharged to surface water bodies. Of the remaining 83
cfs, about 49 cfs (33 percent of the pumpage) was lost to evapotranspira-
tion. (See section on recharge to and discharge from the aquifer.) This
leaves about 34 cfs (23 percent of the pumpage) which returns to the aquifer ~
through an assortment of waste water disposal facilities.
Interim sewage treatment facilities pro,cessed about five of the 34 cfs
of waste water. These tnterim facilities are generally small systems which
collect, treat, and dispose of waste water generated at apartment complexes,
shopping areas, mobile home parks, housing developments, educational institu- ~
tions, recreational areas, military installations, motels, and hotels. These
systems are not considered to be permanent and may be replaced in the future
by extensions of existing sewer systems or by more elaborate small systems.
The treatment processes utilized at these interim facilities are activated
sludge, both extended aeration and conventional, and stabilization lagoons,
some of which are provided with supplemental mechanical aeration (U.S Army ~
Corps of Engineers, 1976). The effluent from these systems is ultimately
discharged to drainfields, lagoons, or seepage ditches
Individual household systems disposed of the remaining 29 cfs of waste
water. The three basic methods of individual treatment and disposal employed
in the area overlying the aquifer include cesspools, septic tanks with dra,in- ~
fields, and aerobic treatment units with drainfields The vast majority of
individual systems consist of septic tanks with drainfields (U S. Army Corps
of Engineers, 1916). The following figure shows the distribution of the
various types of waste water treatment systems located above the aquifer in
the vicinity of the project site.
A total of 76 residential units have been approved and are under con- ~
structi,on in the initial phase of the proposed project. Of these 24 units
are using septic tanks as on-site sewage disposal systems and the remaining
52 units are connected to an interim package sewage treatment facility. This
existing plant has a capacity to handle a total of 119 units and employs an
activated sludge-extended aeration process. The effluent from the interim
sewage treatment facility, as well as the on-site systems, is disposed of in ~
a su6surface drainfield. The drainfleld for the interim sewage treatment
facility is located near the southwest corner of the project site as shown
on the project site map.
b, The Probable Impact of the Proposed Action
~
As discussed in the section on ground water above, no deflnitive con-
clusions can be reached regarding the possibililty of waste water percolation
97 ~
214
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to the ground water. However, the available data does give strong indication ~
of percolation reaching the ground water thus in assessing the probable
impact of the proposed,waste water disposal system the assumption that
waste water percolate does reach the aquifer will be made.
Effluent Quality
The proposed project will result in the disposal of a treated waste ~
water effluent to a subsurface drainfield located above the aqulfer. When
the project is fully developed it will result in the generation of approxi-
mately 6 2 million cubic feet (.2 cfs) of waste water per year. Using a
consumptive use factor as developed by Todd, 41 percent of this volume would
be available for percolation into the ground water system. Thus, it is
possible that 2.5 million cubic feet per year ( 08 cfs) of waste water per- ~
colates into the aquifer. The chemical constituents of the treated waste
water are potential contaminants of the ground water. A summary of the ef-
fluent quality of the proposed extended aeration-activated sludge system
compared to the typical effluent quality from individual septic tanks is
shown on the following table. In general the effluent quality from the
activated sludge systems is improved over the septic tank system. While ~
neither system is effective in removing nutrients (nitrates, phosphates, and
other dissolved sa,lts) the activated sludge system is much more effective
than septic tanks in removing total suspended solids, biological oxygen
demand and coliform bacteria. Even without disinfecting the effluent, acti-
vated sludge systems are more effective in coliform bacteria removal be-
cause of the better control of organic solids. ~
.
Effluent Treatment in Soil Biosystems
The quality of the potential effluent reaching the aquifer from a sub-
surface drainfield will be improved over the quality of the effluent dis-
charged to the drainfield because of biochemical treatment mechan7sms that ~
occur as the effluent passes through the soil column above the ground water
level.
The mechanisms by which pollutants are removed from effluents applie~
to soil systems are numerous and interdependent As Spyridakis and Welch
note•
~
...the overall process...is very complex because of the large
number of variables involved. ...The fate of wastewater materials
in soils is determined by a large number of processes, including
physical retention, absorbtion on solid surfaces, plant and
microbial uptake, microbial degradation, volatilization, leaching, ~
chemical breakdown, and precipitation.
Most suspended solids are removed from treated effluents before they
are applied to subsurface drainfields. This is necessary to reduce or
e]imi,nate clogging of the soil. Suspended solids which are passed to drain-
fields are primarily fine, organic solids which are removed in the top ~
99
216 ~
~
~ ESTIMATED EFFLUENT'QUALITY1
Incoming Effluent from Treatment Process, mq/L
4laste Water Activated Sludge- Septic Tanks
Constituent mcil) Extended Aeration
4
Total 225 20 50
Suspended
Sol ids
BOD5 220 15 100
~
NH3 as N 25 2 25,
Nitrate as N - 28 "
Organic N 15 - 5
~
Total Pji trogen 40 30 30
Phosphate 10 8 8
Fecal Coliform
~ (#/ML) 1500-5500 2102 1500-5500
lAdapted from references 6, 7,and 8 of AppendTx B. page .
~
2Assumes effluent is disinfected.
~
~
~
~
100
~ 217
~
several i`nches of soil by physical filtration or absorption After removal ~
they are degraded by soil micro-organisms in much the same manner as soluable
organics.
Under conditions of proper hydraulic and organic loading, soluable
organics (BOD) are taken up by soil Micro-organisms and converted to carbon
dioxide, water, new cel,l material and a complex, relatively stable array of ~
organic compounds known as soil humus
Soil systems are also very effective in removing trace metal cations.
Trace metals which are of concern include zinc, copper, nickel, cadTium and
lead Mechanisms which have been proposed for the removal include•
(1) Absorption by silicates at soil particle surfaces through surface ~
absorption, surface complex ion formation, lattice penetration,
and ion exchange.
(2) Metal fixation and absorption by organic matter.
(3) Surface absorption or surface precipitation on carbonates and/or
silicates.
(4) Precipitation as a discrete oxide or hydroxide. ~
(5) Biological uptake and immobilization.
In general, removal efficiency of trace metals may range from 9J3percent to
99 percent depending on the nature and depth of the soil column.
As pr.eviously noted, traditional secondary treatment systems do not ~
efficiently remove the primary nutrients• phosphorous and nitrogen. Drain-
field disposal of treated effluents may provide partial removal of these
nutrients and therefore decrease the potential for ground water contamination,
or if the percolate eventually reaches surface waters, eutrophication.
Phosphate removal is accomplished by physical/chemical retention by ~
soil constituents, as well as uptake by cover crops, and removal from the
site by crop harvest. as organic materials are degraded, complex phosphates
are ultimately changed to simple (ortho-) phosphates. Orthophosphates react
with the iron, aTuminum, and calcium present in nearly all soils to form
very insoluable phosphate salts. These reactions may involve cations free
in the soil water which results in precipitatlon or the reaction may occur at ~
the surface of soil particles which is termed adsoprtion. Physical-chemical
removal of phosphates increases as the depth of the soil column increases
and as the clay content of the soil increases. Clays are very fine mineral
soil particles with very high surface area/volume ratios. They are 094very
reactive. Expected phosphate removal will range from 85 to 99 percent.
~
Nitrogen removal is somewhat more complex than phosphorous removal and
the least understood. Most of the nitrogen in the traditional septic tank
effluents is present as ammonium. Activated sludge-extend aeration system
effluents, on the other hand, contain primarily nitrate Nitrate (an
anion) is very mobile in percolation waters, while ammonium (a cation) is
retained strongly by soil particles. The ammonium ion (NH may be held ~
temporarily by physical/chemical mechanisms similar to thole which retain
orthophosphate. In alkaline so11s a small portion of the ammonium ion will
be converted to arnmonia (PJH3) which may, in turn, escape as a gas. The re-
maining ammonium is readily oxidized to nitrite (N02+) and nitrate (N03+)
101
218 ~
~
~ ions by a group of aerobic soil bacteria. These anions, as well as the
nitrite and nitrate originally present in the irrTgated eff]uent, are not
well retained by the soil and move, in solution, with the irrigation waters.
They may, however, be removed, in transit, by several mechanisms. Nitrite
may be chemically denitrified to gaseous nitrogen (N2) and oxides of nitro-
gen (NO ) which subsequently escape to the atmosphere. Secondly, nitrate
~ and nitNte anions may be biologically converted to gaseous nitrogen (N2)
by denitrifying bacteria. These bacteria are anaerobic.
Although little information appears to be available on the efficiency
of these mechanisms, it is probable that they are only partially effectiye
in reducing drainfield nitrogen. This is apparent for a couple of reasons.
~ First, drainfield effluents are injected 14" to 36" below the soil surface.
This places them out of the most biolog1ca11y active soil horizan, the top
soil. Secondly, and probably most important]y, drainfield applications are
not carefully controlled and optimal conditions for denitrification are not
maintained
~ Soil systems do not generally retain anions including, in addition to
nitrate, chlorides, sulfates and bicarbonates. These dissolved inorganic
materials move with the drainage water and rnay pose a potential for ground
water contamination.
Bacteria and viruses are removed from the treated eff]uent as 1t per-
~ colates through the soil Natural filtration is the primary mechanism of
removal. Crosby, in his studies of the aquifer also concludes that the low
moisture content of the outwash alluvium provides an environment which is
not conducive to the survival of bacterial organisms Crosby reports that
the deepest level of bacterial organism observed was at the 11 foot level
below the surface 35 Because of their size, viruses are generally trans-
~ ported to a greater depth than bacteria. Because the depth to the water
table is greater than 100 feet in most of the aquifer, and in excess of 60
feet in the area of the project site, penetration of bacteria and viruses
to the water table is unlikely
In summary, effluent disposal in a subsurface drainfield can be viewed
as a method of tertiary treatment (i.e, polishing of secondary effluents
40 by decreasing the concentration of organic contaminants, nutrients, p`athogens
and heavy metals). Anions, such as nitrate, chlorides, sulfates and
bicarbonates are generally not removed 1n secondary treated effluents and
are only partially removed as the waste water passes through the soil column
above the ground water tabie. As such they pose the most significant poten-
tial for ground water contamination from the proposed waste water treatment
~ sys tem.
S1 udge Di sposal
Sludge from the proposed waste water treatment system must be pumped
and disposed of periodically. This sludge is raw and if not property
~
~ 102
219
~
handled could pose a public health problem If the treatment plant is
operated b_y the County of Spokane, the sludqe will be disqosed of at the ~
sanitary l andfi l l at Mi ca, 6Jashi nQton
Odor
An activated sludge-extended aeration system may result in obnoxious ~
odors when not properly operated and maintained. However, when such systems
are designed properly and attention given to important operating and mainte-
nance characterlstics such systems will operate odor free. Any sewage treat-
ment system can experience odor problems during upset conditions. Odors
from package treatment systems are not an unavoidable adverse impact.
~
c. Measures to Mitigate Adverse Impacts
Nitrates are the pollutant of greatest concern from the disposal of ,
waste water effluent in subsurface drainfields located over the aquifer. r
While other anions would be carried with drainfield percolate and may reach ~
the aquifer they effect primarily the aesthetic quality of drinking water ~
and do not pose a public health problem Other pollutants are very effective- °
ly removed by soil biosystems. The potential impact af nitrate contamination ~
of the ground water could be mitigated by the addition of nitrification and ~
denitrification unit operations to the proposed waste water treatment facility
These operations are extremely expensive when applied to small treatment
facilities. In addition they add sig6ificantly to the complexity of opera- ~
tlon of the plant, increasing the possibility of system malfunction and up-
set. At the present time nitrification-denitrification unit operations are
not employed oniany sewage treatment facility 1n Spokane County, including
the City of Spokane treatment plant. The potential for groundwater con-
a
tamination could also be reduced or eliminated through the use of an
evaporative lagoon. Evaporative lagoons require large land space and do ~
not operate efficentl.y in the Spokane c1imate. Past experience with such
systems in Spokane Count.y has been larcely poor. Problems with odors and
overflowing from poor design have been slgnificant. .
The selection ot an interim package treatment facility for the proposed
project is a factor that will mitigate the long-term impact that the project ~
may have Such interim facilities are not designed to be permanent installa- ~
tions but have the flexibility to be modified to provide a greater level of
control or be replaced in the future by central treatment facilities or by
more elaborate small systems. The collection and distribution system is al-
ready provided and the cost of connection to a central treatment facility would be minimized if it is determined that such a facility is necessary. ~
Proper drainfield site selection will also mitigate the potential for
ground water contamination from percolation of drainfie1d effluent. The
drainfield should be located to avoid areas where the watertable is shallow,
slopes are steep or soil permeability is excessively hzgh or low. Any
~
103
220 ~
~
potential risk to the groundwater from the disposal of sewage treatment
§ystem sludge at the Mica landfill couid be reduced or eliminated by
disposing,of the siudge at the City of Spokane central sewaqe treatment
~ plant. This vrould preclude any potential 4roundwater contamination or
public health problem that could result from disposal at a landfill.
d. Unavoidable Adverse Impacts
The possibility that some waste water treatment system effluent will
~ percolate to the water table and carry contaminants to the ground water
cannot be precluded. The proposed waste water treatment system, however,
provides the flexibility to meet future waste water treatment needs as
they arise
~
~
~
~
~
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221
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APPENDIX E
~
ESTIMATED DENITRIFICATI4N
COSTS FOR VARIOUS PROCESSES
~
~
~
~
~
0
~
~
~
227
~
~
BIOLOGICAL DENITRIFICATION
Ma.xed Reactor
Tables I and 2 show the design basis for denitrification in a mixed, ~
uncovered reactor and the unit process sizing. The anoxic denitrification
reactor is followed by an aerobic stabili2ation reactor for removal of any
excess methanol. Solids are then removed in a clarifier and recycled to
the denitrification reactor. Estimated construction costs are shown in
Table 3 and O s M costs in Table 4.
~
Fixed Film Denitrification
The costs of fixed film denitrification were estimated based upon the
following criteria: 6 ft deep bed, gravity system, 2-4 mm sand, 2.7
qpm/sq ft at average flow, backwash 15 min/day at 25 qpm/sq ft and 25 ft
TDH wxth auxiliary air scour, 3-1 methanol to N03-N ratio Costs for the ~
fixed film system were based on the work conducted on filtration system
costs by CWC under EPA Contract 68-03-2186.
Construction costs are shown in Table 5 and operation and maintenance
costs in Table 6 • `
PHYSICAL-CEIEMICAL NITROGEN REMOVAL
Cost information was developed for the physical-chemical alternatives
of breakpoint chlozinata.on, selective ion exchange, and ammonia stripping.
Construction costs are shown in Table 7 and operation and maintenance
~
costs in Table 8.
Breakpoint Chlorination
The basic design criteria used were as follows•
Provide 30 seconds of rapid mixing, G= 900 ~
Peak NH3 concentration = 2 x average NHQ concentration
Chlorine Feed cagacity = 10 x peak NHa-N concentration @
average flow
~
Costs of chlorine contact facilities were not included because such
facilities would normally be provided for disinfection purposes even with-
out the need to remove nitrogen.
Costs were estimated for average NH4-N concentrations of 10, 20 and
30 mg/1 Construction and O& M cost information was derived from reports ~
prepared under EFA Contract 68-03-2186 by CwC Chiorine usage in the
various size facila.ties is as follows
~
22$
~
~
TA.BLE L DESIG4 PARAMETERS, MI XED REACTOR
DEN I TRI FI CATI ON
~ Denitrification reactor-
Type Suspended growth
Nitrate removal rate,
lb N03-N/lb MLVSS/day 0.1
~ MLVSS, mg/1 1500
Mixer type Submerged turbine
Mixer sa.ze, hp/l,ooa cu ft 0 5
~ Aerated stabllization reactoz
Detention, minutes 50
Aeration, hp/1,000 cu ft 1
~ Final clars.fication
averflow rate, ggd/sq ft 700
Sludge recycle, t 50
Methanol feed
~ Methanol nitrogen ratio 3 1
N03-N concentrations, mg/1 10, 20, 30
~
L~
~
~
229
~
0
TABLE z. UtJIT PROCESS SI2ES, t4IXED REACTOR DENITRIFICATION
Plant capacity, mgd ~
Unit process or component 1 5 10
Denitrification reactor
Vo 1 ume , cu ft/nu xin g, hp ID
10 mg/1 N03-N 81900/5 44,500/22.5 89,000/95
20 mg/1 N03-N 17,800/10 89.000/45 178,000/90
30 mg/1 N03-N 260700/15 133,500/67.5 267,000/135
~
Aerated stabilizaticn reactor Q
Volume, cu ft 4,500 22,500 45,000
Aeration, hp 5 22.5 45
Clarifier ~
Area, sq ft 1,500 7,500 15,000
Retu irn sl udge , mgd 0. 5/0 . 75 2. 5/3. 75 5/7 . 5
Methanol feed, lbs/hr
~
10 mg/1 NO3-N 9 44 87
20 mg/1 N03-N 17 87 17_4
30 mgJ 1,N03-N 26 131 261
Q
Average/Peak - Average flow is used to determine the power requirements
and maintenance materials cost. Peak capacity is used to determine
construction cost and labor requirement.
~
~
~
230
~
~ 0 qw °
0 0 •
~
TAALE 3 CONSTRUCTION COSTS, MIXED REACTOR QENITAIFICATION, 1976
Canstruction costs, $1,000
l mgcl Vlant 5 mgd plant 10 mgd plant ,
10 mg/1 24 mg/l 30 mg/l 10 mg/l 20 mg/l 30 mg/l 14 mg/l 20 mg/l 34 mg/l
N03-N N03 N N43-N N03-N N03-N N03-N N03-N N03-N NO3-N
Denitri£ication reactor
Basxn 100 160 184 250 360 490 360 510 680
huxers lb 27 40, 54 90 120 90 160 200
Ae rated stabilixation reactor
Basin 60 60 60 160 160 160 250 250 250
Aerators 16 16 16 50 50 50 90 90 90
Clarifier 90 90 90 290 290 290 600 600 604
w
~
Return sludqe 70 70 70 160 160 160 250 250 250
Ptethanol Eaed &
storaqe 35 50 65 50 80 120 80 150 200
Subtotal 387 473 521 1010 1190 1340 1720 2010 2274
Yardwork 54 66 73 141 167 188 241 281 318
Total construction
cost 441 539 594 1151 1357 1528 1961 2291 2598
These costs are for the denitrification process only and do not include land, engxneering, leqal,
or financinq during construction, but include 25 percent contractor profit and overhead
TABLE 4 OPERATION AND MAINTEPIANCE COSTS, t4IXED REACTOR DENITRIFICATION, 1976
Annual requzrements
Labor Energy
tlaint. Total
1,000 materials, Chemlcals, annual,
I'lc-int Cd[3ac1tY tlours $1,000 KWH $1,000 S1t000 $10000 $10000
1 Rlr, a -
10 mg/1 i103-td 3,400 30 b 65 8 2 0 4 3 6 9 43 8
20' mg/1 i103-N 3,654 32 9 91 1 2 7 4 8 13.7 SA 1
30 mg/1 td03-tJ 3,900 35 1 116.3 3 5 5 1 20.5 64 2
w 5 mad
N 10 mq/1 P103-N 5,070 45 6 301 0 9 0 7.9 34.3 96 8
2r), mq/1 r»3-ri 5,640 50 4 426.3 12 8 8 9 68 5 140 6
30 mg/1 r103-N 6,150 55 4 552.0 16 6 9,9 102 7 184 6
]0 m,4d
10 mq/1 MO 3-PI 6,800 61 2 586 3 17 6 11 3 68 5 158 6
2rl mg/l N03-tJ 7,700 69 3 837 4 25 1 13 2 136 9 244 5
30 mg/1 '103-t1 8,200 73 8 1,098 1 32 6 14 6 205 4 326 4
These costs are Eor Lhe denitriEication process only and include labor at $9 00 per hour including
fringe benefits and electrical energy at $O 03 pPr kwh
0 _ 0_ ~ ~ 0 4D 49
~ ~
~
TAHLE 5 CONSTRUCTION COSTS, FIX£D FZLM
bENITRIFICATION, 1976
~
Construction cost, $1,000
Plant capacs.ty, mgd 1 5 10
Structure 336 776 1,506
~
Media 12 40 80
Air/water backwash 160 150 280
Methanol feed & starage 50 80 150
~
Yardwork 78 146 282
Total constructaon cost
at 20 mg/i N03-N $636 $1,192 $2,298
~
at 10 mg/1 N03-N $619 $1,138 $2,218
at 30 mg/1 N03-N $653 $1,238 $2,355
~
These costs do not include land, engineering, legal, or financing during
construction, but include 25 percent contractor profit and overhead
~
~
~
233
~
~
TApLE 6. OPLRATION APJD MAItJTENAIVCE COS'fS, E"IXEO FILM DENITRIFICATION, 1976
Annual requirements
Labo r Ene rgy
Maint. Tatal
11400 mate rials, Ghemicals► annual,
Plant c3pacity Wours $1,004 IWH $1,000 $1,000 $1►000 $1,000
1 m~d
11) mg/l 003-N 3►850 34 h 11.5 0 3 1 2 6 9 93 1
20 mg/l N03-ri 4,000 36.0 11.8 0 4 1.2 13.7 51 3
30 m4/1 N03-N 4,150 37 4 12 0 0 4 1.3 20 5 59 6
N
~ 5 mgd
10 mg/l N03-N 4,500 40 5 43 0 1.3 2.1 34.3 78 2
20 mg/l N03-li 4,800 43 2 43 8 1 3 2.3 68.5 115 3
30 mg/l P143-N 50100 45.9 44 5 1 3 2.6 102 7 152 5
1o mgd
10 mg/1 N03-N 5,400 48.6 73.0 2.2 3 1 68 5 122 9
20 mj/1 N03-N 5,800 52 2 74 1 2 2 3.6 137.0 195 Q
34 mg/l N03-N 6,240 55 8 74.8 2 3 4.1 245.4 267 6
These COStS include labar at $9 00 per hour includinq fringe benefiCs and electrical energy
at $O 03 per kwh
0
~
TABLE 7 CONSTRUCTZON COSTS, PHYSICAL•CHEMZCAL NITROGEN REMOVAL,
1976
~
,
Construction cost, $1,000
NH,,-N concentratxon
Process bplant capacity, mgd 10 mg/1 20 mg/1 30 mg/1
~
Breakpoint chlorxnation
0 01 9.6 7.1 12.3
0.1 17.2 25.4 36.1
1.0 70 S 114 8 176.2
5.0 229.5 377.1 623.0
~ 10 0 377.1 696.7 1,975.4
Selective ion exchange
0.01 98.4 98.4 98.4
0 1 147.5 147 5 147.5
1 0 442.6 492 6 442 6
~ 5.0 1.557.4 1,557 4 1,557.4
10.0 2,704.9 2,744.9 2,704.9
Ammonia -,tripging
0.01 3 9 3.9 3.9
0.1 31.1 31.1 31 1
1.0 245.9 245.9 245.9
~ 5.0 1,065.6 1,065 6 1,065.6
10.0 1,967.2 1,967.2 1,967.2
~
Costs do not include land, engineering, Zegal, or financing during
construction, but include 25 percent contractor overhead and profit.
~
~
235
8
~
~
TABLE S OPERATION AND MAINTENANCE COSTS, PHYSICAL-CHEMICAL
NZTROGEN REMOVAL, 1976
~
Annual cost, $1,000
NHA-N concentrataon
Prvi cess b plant capacity, mqd 10 mg/1 20 mg/1 30 mg/1 ~
Breakpoint chlorination
0.01 3.7 4.7 5.4
0.1 11.0 17.0 23.5
1.0 52.0 100.0 140.0,
5.0 170 0 280.0 400.0 ~
10.0 210 0 380 0 600.0
Selective ion exchange
0'.01 13.0 1_4.0 15.0
0.1 18 0 19 5 21 0
1.0 40.0 47.0 55.0 ~
5.0 130,.0 150 0 180 0
10.0 210.0 250.0 320.0
Arnmonia strippinq
0 OI 2.8 2 8 2.8
0.1 6.2 6.2 6 2 ~
1.0 18.0 18.0 18.0
5.0 57.0 57.0 57 0
10.0 170.0 170.0 170 0
~
Costs include labor at $9.00 per hour including frinqe benefits
and electrical energy at $0.03 per kwh
4D
le
41
236
0
~
10 mg/1 NHQ-N 20 mg/1 NH9-N 30 mg/1 NH4-N
~ 0.01 mgd 1.5 ton/yr 3.1 4.5
0.1 15 31 45
1 150 310 450
10 1500 3100 4500
Costs of chlorine were based on use of ton cylindess for quantities up
~ to 450 tons/year ($0.11/lb) and on tank cars over 450 tons/year. Between
1 and 10 mqd, the demurrage cost on the rail cars will result in an effec-
tive chlorine cost in excess of $0.05/lb and a gradually decreasing cost
down to 50.05/lb at 10 mgd. To determine O& M costs, a labor rate of
$9.00 pe= hour and enerqy cost of $0.03 per kwh were used. The same unit
costs for labor and power weze used for all alternatives.
~ Selective Ion Exchange
Zfie costs foz this process are based on use of cls.noptllolite exchange
medsa in gravity structures with recovery of the regenerant in closed-loop
stripping towers. A minimum of four exchangers was provided for each
~ capacity. A four foot deep clinoptilolite bed loaded at 5.25 qpm/sq ft
was used. Exchanqer construction costs are based on cost of qravity filtra-
txon structuzes developed by CWC under EP'A Contract 68-03-2186. Costs
include the exchanqe structure, backwash facility, influent pumping, clari-
fication-softeninq facility for the spent regenerant, and closed-loop
strippi.ng tower for regenerant recovery. Construction costs are essentially
~ unaffected by ammonia concentration but regeneration frequency and operating
costs increase as ammonia concentration s.ncreases. Costs for the closed-
loop tower modules (such as illustrated on paqes 9-75 and 9-76 of EPA's
Technology Transfer Manual on Nitrogen Control) are based on tbe estimated
cost of such units for the Upper Occoquan, Virqinia plant. Influent pumping
costs are based on 15 ft TDH with regenerant zecovery pumping at 35 ft
~ TDH. Chemical costs are based on those projected for the Upper Occoquan
plant.
Anunania Stripping
Construction costs are based on a tower loading rate of 1 gpm/sq ft
with a tower packing of the type used in the Orange County, California
~ plant (see page 9-90, EPA's Technology Transfer Manual on Nitrogen Con-
trol) with 24-foot packing depth. Construction and O s M costs include
influent pumping (50 ft TOH). The costs do not include elevating the pH
of the wastewater to an adequate level for stripping nor of sutisecuent
downward pH ad7ustment following stripping. The costs of the stripping
process to provide a given percentage removal of ammonium-nitrogen are
~ independent of influent concentration (at a given temperature).
{
~
237
~
TABLE 9 CHARJICIENISTIrS QP pITR(uZH pEW'vAL DAOCfSSES
Oudatlon 6loloqical multi-staqo dtteh plaot lincrsl-
dreakpo,fnt Selectlve nitragen ceraval fincremental mental over bioloqleal
fi _or rhlorsna!»i ton rxchenqe Amuonta strlpping nitr9[ plus denltri U cecionl trcatoient reqwrementsl
'_GArlt rce tlo S►a,%Lfi^ant ttO SSgniticant Process pecEornence Proeefle !e vecy cemperature Lnnq SRT pravldo9 satis-
EfEert Eflett ta very tenparature sensltive A detrca9e of tactory opcration ve11
eaneitive and frees- reactor temperature tcom IO•C belev 10•C t in soan
inq teiVa[atuces can to 10°C requlres doubllnq fat cases to nearly 0°C
cause process 9hut- leese of praseea raaceac sitee -
da+n due to {re relative lmportanca of aYr i
fornation Yater tacperature depeads on
precess selected
`1.if n'_ ttilor l+taeet Netativoly P[oteas ptovldes Constcuction i 0 i N SOSt9 Influent aampnle concen-
'llcavPn on tntal casts mInoc Lapntt esaentlally fixed ~ genetally increase viN in- tration hns llttle eftect
_^n-oncra- cntal coata tor on total costs o[ rennval over a cceased fnfluent amcanta up to 50 ar 60 cq/1
11nna averaqP o! 30 total oeste fot wide cenqe of concentratlon
N mq/l IM -N ace averaqc of 30 amcnonta cortcenua-
pWp 271% of4eoats aq/1 NH4-N are t►on9
A 10 mq/l 1251 of cast9 8
19 mg/l
1a-0 5-19) cq ft/mqi 200-700 so ft/ 750•100 sq Et/mqd 13 000 to 26,000 aq tt/tnqd fncreaantal tand reQulre-
r# q i1renwnt9 mqd mant9 omer bloloqieai
trcatment 170,000-500 000
sq ft/mqdl ace nll
lc~rart,3nal Sta+nle b p!(1- Etftcient 4e- Simplo ooere Uon Subjeet to blolagical upsetB Same as biolo91ce1 plus
4nsilrra- cient, but re- pnndabla e con- but eubjnCt to ooor rhich may disrupt prorees denltri[itation efficlenty
~iors lutrea htlh t mlahle toc apacetton in cold [oc a3ny daye calleb[llty t aperability
shlorLn- 1M931es nittoqen rPCIDVJl veathat shutdovn Ln have not becn deapnstratnd
vhtch nusc bp t,ut opecatien 6 lteectnq o+eather A vtdaly
nvalu,+cpd as re- equipmnt nre •ela- scoling ocoblema
1ntpd to .ater ciiely yccrplrx Proeeas cequups
Ilnltti siqniftcant pH adjuec-
ment Artat to and
atter strippinq
Lnr !/plrall, Medsun, !/pua U y Hkqhest t,picall/ H1gh, typteally 9t10 kwh/nq Enerqyr eonsunption is lesy
*Ai~ 15 kwb/nb :5n kwh/eq 1500 kwh/nq thee blotaqtcal reryulre-
~ yn5.s^w• in mcnts
~
~
APPENDIX F
~
SPECIAL MONITORING RESULTS
IN VICINITY OF PROJECT SITE
~
~
~
~
~
fl
~
239
~ ,
i,in tili ni 111111) i i rIIi f 1,111miluni i i,
,ntIrLC 5(1C riUnIsCR
SITC LUCATI(lt! `
- G.iI I}
a a t e Ut-pih 4latcr Specific pil Turbidily Ihreshold (1i-,,solved 1110,SUIveA Jis-nlved IIirCness Iltsspived Dtssolved Dissolved Total Total Tp al '^.*a
qI lefl (tt ) lrnip- fnntlurt• (unils) 011,111 Adnr Silita Irnn 4anqi1r•i (f.1 11111) fhlot idc Fluoride Sulfale Ilih,ito Uitriit PIir, isSa v4d
I rnlwi 41111 1 Iluultirr (',t1 ) (I1u1 1u+l/l) (fl1 (S0 ) (N) f c) iI.)_ (~~!~i1i1 fifiliA 1
'tam~ai~1
i y~ - - - • - T O • If1 Q
~ (f ur J h fl 1 ~Ib - lliU 11 2ri0 0 ~L S
3-28-78 13 450 226 7 5' 5 2
WWP 3- 28- 78 14 500 244 6 4 5 0
N 2-2
3-16-18 10.5 500 244 6.4 5.0
0
W4JP
2-4 8-16-78 9 360 182 8 0 3.9
'4ODERN
No.9 8-16-78 11 290 164 3 8 2 3
UERA
No.4 3-16-78 10 450 225 4 1 3.4
, , - -
- ~
.
~
• ~ ~ ~ ~ t~ • ~ ~ • ~
~
~
ADDENDUM
~ FINAL EIS
COMMENTS AND RESPONSES
~
The following pages contain the comments received on the Midilome
Subdivision Draft Environmental Impact Statement. The written comments are
reproduced in their actual form in which they were received, on the left
~ side of the page, and the Spokane County responses, on the right side of
the page
~
~
~
•
~
241
~
- i J
UNITEG STATES GEPApTMENT OF AGAICUITURE
541L CQf15CHVATIQN fiERVICE
Fmmm in0 U S laurlhou7a tipol,unn thshinhton 09101
luqust :9 19 9
~wt,umi lai~uty Ilunuwlt Utqnrtarnl
~ith µll ~utinnun
tip~r~ nt~ 1~~1 J0,1III
to hsvi Innuul ilu nolle und tAe sailfo onp dola rnrracl ag Ibtcd m`thc
Irict ~n.ii~miquitul,+opi41 %rutrni4N Vor the pm{baeJiJevelarQcut sne
itif IlItu IS ihc tapn{l =sp dww-t thn thn Jrninogo Is w tho imrcA 7`he surfux water dralnnge plan far tlic proJect is designcd sn as to i
41w11'Jn I luuk Illu%turl 1.ruLA w1114.11 Ir uppP11361aattly h nUr 11 ►:D Peet)
un oIJ 1 i1o Iwd ri~~~n i5 ~~bso~ or ~~rci5sa silt lmia 0 5L PhuaM
"I ~p~ of surl'ctce auter runofE ia excess of thut ~v}uch occurs on tlie projeci
'Indy tu,ia n c Arnuwr yUry cloy Inflm und Wnl4-%ty ylU lain ate in its notutul condition on the project slte The proposed project wiU not
til I of Uie r sn11+ urv+ hnttnnlaml inlle thnt oro aiih)oet ro (lmwllnd merease the volume or peak rnte of sudace water runo[f from tlie praject sitt,
Ii4ntrull) In lIte +priog mul If cAO IM 11ipCCICt) thnt ii uuv uAJluanil
runufr r,trr tiwn frnm tMc IJldlloow alta tAut It wulJimorely wmpuwiJ towards @loufCreek.
Ihl. (ltunlink pioldwn4 {n t6ie lor nros
W411 t woa 11> it I uur uplniwi tlmt duc tu thL rupld ycreulntiuu The potendal far grourtd water c4ntarninuhnn fram the subsurfacc
iv it,ilitr or rno, soli {tronnd wnlor Lanld Ao pallntoA Z 2
4~:p disposal of surfaie weter nnd treuted waste watcr treatmeni system e1'Aucnt ts
N U u ~ nnllir n( icivlro tn yau in Aral ing rith Ihin protdco plciee discussed in qte secUon on tvater quaLty irtcluded herem
tmitnr nw Isctrlkt cnniprvntlnno+t IuJNrtlion *inJ wu ti{wAunc ticlJ
utflit. Imninl cn 91 S I yirapiw Slnkinr Mnahluutuu 9910o
Ihml y u for tlie uplwrtuult! to retism tAle draft miulroumntnl lapAct
t ntiurnt
~ ~lou S Ili Id~ ~ ~ ~ ~
tulu 1 ~ u wr~ il ~uult~E
~FCF IV ED
f! ti
0
~ ~ (D (o -0
• • • • a ~ • • • • •
ti I
~ STn1F OF DFPARTMENT UF ECQLOGY
wA%tqNGTQiV
~"'l°~~ C~ptc~c[ 11, 1978
IRA lA
Lpua,*aae ba~mrr Planalaa Uepunent
tfarth Illl loff.,,.,
1;p4lkMu Mauufil{,tua 992!!1
bl6JCCii N►JUcao 9uAdlvlyfua Dra(t 4,vlruncat4l tqact Stauwrat
GLntlcsn
Uc huvo rnvlnred thte IIPJB a1tA tvpMels on tYut partloa dialing rleA
dn,uuJ vater leyuet Yu [lad tGls subjsct cwcre4 la Jept6 aaJ Aeva
4.umancu-J DrlairUp upou lnbcprouclao af nratn dato artd currcnt
6Iu41111- Cuwlicy 208 progrsm ElallpoN uhlch uure nat avnUnblu ot thc
eine thlJ ntls vau vrierun
Urdre cnrulttlea o! Uepastemt nf I.eoloay poller uC,iptcd tlareA 9 1918.
ond lo arcordoau Wth UAC 113-280 to Oa adopted 1n davnoGer, 1978 ui
►LLl ao PL11 40 48 110 t6e 11Q8 aiNt tavlw the ScwroSD ryrtus and 3 The requirement for un fndependent and sped6c AOE revidw (s noted
dlupnga) tucllltlcu fac app[owt ar dlouppruvd thla ruvler oppltuo
N olncu ttw dfrRoaul lae911tr ir a mueluwlcal nyatcn Seevlog la euwn
4~b ef 1fi (lvleg wltn DOE rerlcu v/ll Qe ln sAdttlen to am/ ethar ee-
w Quind lucnl ar etaeu revlen lor appraval lt vlii rat Mpiace nay
ucher r.vicve ond aetuai tawteueelon auxt eaafon to thr mn url.n-
Lent riluirearate set tustA fa appemrnle [rnm eup eirner ulth 'urt+-
dirtlan
i1w DpQ hou caricvpd ond approred the NyotuU for Phaaa 1 oI eAa Mldi-
lasc "uGdlvlelod TUIo approroal le rubJaat cn cppcAl to tQ9 PoUutlan
tuiteal Bcarlnso Euard vltA s hearlnp currcetly eehtQuleU !or IktoDar
1978
huhecgirent Plldll eatc 5uMllrlslon dnvn2rp. t pAsaas vUl reqoire furcber
UQ1 eevler fur rppMVal
tlto ardur af uur rcww lr w[lat pramrnc a 5uamry of Oplnion vAteQ
lu drawii frw uur cvqruU Imwladgu of tAis pmlnce and In reletieo-
c.hlp to vaetevatet ouniyiarat mior the SpaYaan Vniltq - ItotAarw PrN-
rle Aqulfor Pollovloe tldm wssury nre ttnlcetf connente deellad
vltA pEIS ecmacnu and conclualono Aa ft true vlth tM 9E19 woc
retlunotL tor rovlmr eomcnU le fouad to tGe Appadk A iaetiou
RECEIVEp gincerelg
5E1' 12 1970 di
svoaexc eounir
PIAflNIRG ALPARIMEMT d61onr1 xeiugar
Euwm Aagieaa) OfElcc
Jlps~oc
0
. ~
Prepand bY AAy* Bterifi
Env1[mmeata! Qu&11t
vleor
stammarv of Onfolo„
Thc infoimatton pRSented in thc 'WS supporls !ho Depnrtmtals
I cc so rcitl tee uc"ecsoocle oplnmu thut a centnuaca ocwar eyaceo
1eaAtng to o ccsaclusion that thc ptopased nchvutad siud~ system ia tlle best amilnblc und
~e~te trentsmt pLat (dal~aed to 6ire aeoadnry tcait- ,4 d
mnt) ertd dlachuglog to e suhauMece AretelLelO repnunts nll kawm T reasonubte meWocl of sewage treutment For the ptoposed praJect
ovpllabla sncl reesaasDlo mtnoEe of polluNoa comtrol liurtaa lrrl-
getioo or ewylato eanulaKnt of eAe wutawte» wuid wwpmsiat tha
fiighuut dr8[oe of vute AanOlfed lbrwar, tI10 cOiUtflltUs (1IW8DttO
Dp apoec reauicLoeau aAd IoDd cnst0 ts" (AYBi OptICW (19t QrOOdC/1
!n nny faaonren
1 it te aur nylnfon that dleclurgse tras eltAer aepele unYa or paele-
eQu trcdtoene plants ulll cosult fn vary Ndlar ttpset no tAn gio4=d This is conslstent with tiie unformadun mcluded m the ElS nnd is note
vncnr Quility fin must wleataDlo eaae of Arcudd water loyut rnulA
Ae tM t" aeverol lcut Genonlly, retet qwllty vill lprova vltk
dopth eo a roeult of uratllludoa VaUo eued to dcoater tGaa
79 teet lnto the aQulfar wrold drN froa ■ueb a larRa volwo of uetur
that drlnklog veter sunderdt drould ae pt (tos dttuNoool o((eeta
8hollmr volle oitending Inss tbw 15 foot lnto tAe oqulter ehould bc
dlveaueaqvQ oa mttac rttero thn slta to
) Thn khentet eren of t6e aqultar datlaltoly dcmnstratm a di8her
N onJt rnnLentratlun tliea ehr oo-ulled wlo etrrao Ae"edlaa of NOte&
,P ihr tqpu of ❑avege nnd/or aan vpter dUpoul sT•tao fo lmcoUcd
,p In thto orea pannuad w+tor Qunlitp vlll ba aftettd 1f devetap-
menu aea cnpelnued to Oo aDDroved tu thh uoo addldnMl tqaec
aa gruuad wotuc ean ba expected I.lkeylen graund vator poUotloo
liuo just agriculturnl actlvlcles mr alao De qulto afdnlfiennt
111th nll of thin w eoaelCar and L-aotrnd wltA, tAo Mtdtlae Uov-
oJopwunt !a at Icant teting dio propeT fJret e[ep !n tso eveutnal
mIUQeHoa of graund wlar pollutlnn !n cda Iootoilrttan of o gon-
oral acuerope ayntci 7Ae entlro G+eetnr ane aul bo auannned nd
o hlqh prtorltq !u tho awwtual asweriag of ttm populutad 4pokane
VaUcy erea
4 Tt muot ulau bc underotood tAot tUa algaltlowt laynet ta prowu! NOIC~
vatcr qimllcY !n tlur I'hnoler orea hoq olraedy bcon nehieved -
vtttwut Ntdllor.n nldlloso br ut9 at Ituelf, vUl aot Inarunnn
ttu uvoroll Imnnrt on grnund rocm' 1n thot erea Dr oora thaa a
eafrrpte ns»ant lt vlll qava an Iepaet 4ut tAere olwold nut bc
0 ornaurcaAlq chuago Ip QiI8Ctl1g gM{WA MpIM lUap1109 EUO ooletq
to tAfa dcvolnpenuL
r - -
~ • • • ~ • ~ • • • •
iMPAc.t'euMIARe
0
EhxtocinQ Oondictano l
'J Yator
Page N (pnradrapb l)s
Q Q pardon of qie DEIS has been revnsed bnsed on thn new ~vater quoUty
Lltlla eoufllet esluo arnr tho pmEablltq of v"to vater dlapaaal This
draln(!aldu as o oouats of aqultar tachmrga hore+ror thn qualltollae V Q dnta made nvaflable ~nce the publlcation of the draft Pleuse refer to
lapoct of thlo raharga lo aot ret detetaiaed
Pupo 14 (pntnpropA 1)t Appent~x D
Tho aourca of nolt enncantretloo loerooaae !n tAo equlfor aeo prlmr!- Q
ly dua to imn'a aetivittiea ovar aad olopp tAa aqufler raAaesa cono V
?ho corrnnrreaulto of poptA eolattlao 9 Ple~e refer lo Appendix D
aaspltnge proro [hom te e honrlor
enuerptruloo nt aalts an tAe outfete of the growd vatet uedar oQet elr-
CImYC011CC0
fio Probab]o Imcnct of Propeacd Attlon
) Itamr
Pode 19 (pntagrnpA 4)
~ W!lllo 41ia eAcaleol coanUtutuonts uf traeted rteto rster eto tornWtlted ~O 10 A porhon of this sacLan has boen rewsed based on Uie new water quWity
N auutamlnnnto of tho ptoun4 vutor, t6e potontlol tor oorlmm 6ac►arlo-
ingieal an0 viruc euntnatastim doea eelat miormation that has been mado availnble dnce the publicatian of the droft
6secpeMd thne aflluent fraa cbe propooe0 aetivatad olwlQe trcnud etllncnt
In Guprtrter ro mpclt_tank ot[lnmu at thea [1m oneE eaarMo epn drefatlola
fhnre le liktle e+rldcnce ta 1n41ute Che eaA prndutt of altAet oyotea row I
cMAip groand wntar lo hfgh QiallCr ftw Quantlcr o[ porcolate rwOing
grannd walur Irnm en petlvatod aludgo oavoµo traattnat epaten le anticipa-
tm1 to bn µmatat then lndlvldwl dreln(lnld eyataee duo to leao mnpo-
crouoplroUou loaq
Tdnre la a higL poeaatln3 Stwt cuatlnucd Qnvatopocat te Mlo orao v111 ra
uulc lu cvudtunl drltkklnp voccc awndard ulalatlurtc and lanoanad Aaatcrla
ladisal tAront ~
i Tho flelatfanohln Hatroan lecel 41nrt-cers Uoeo of Man's Vmt..._.:.,,t and
!Inlntrndnrr nnd Paihancemant of ianrp Tecn YrallueUvtlY
Vugu 23 (racogroph T)
fiu fpet tlat tGo eraatonnt aqetao moq Eo auppleuentod vItb arv tochnolony ~
or ovcntuully hookad up to o eratral eeuer ayotcn dane oot prerludc au 11 „ NO~C~.
Iwyact on thn oquttor Yho loag teta reteatfaa of contominanu tn tAo
sull ar tlta eoturetaQ IUAC JY q p0~tlfllAl
0
~
f'n~ic tG (Pamyropli 51
tliruL imunutaa vnrtAy of natc aroi a) enlargo0 drulntluld arua h)
dltecln7 drntnfleld tree[neat o g altrogaa atetpping pruaeun nnA Thcsc potenUal miUgaung measuees we noted.
r) 'QUter drnlntlalJ utfllzatiun e p daolag oyot¢a
Altnrnutlvun to proponcA Prnlect
] Allnroote Rovulapmau ConLapte
Paµu ]0
TAo conclualan thot uemot tndlriduai oti-e/te ooptle tnaYa ►rould hnva Such o development would, however, tead to preclude the develnpment
[Ao otleat of lnereanlon putnnelal lor growid aatnr Coutcnloatlop hpn
aot heen ouhetnntlotad aw! [n proba6ly lacorrect ptvcn fcver ueera In 3 13 of an nrea wide sewer system bacause of the tugG cosl of sewedng low density
o lav dansley Jeoalapaent nmos, ln the long run such n development may mault m,geater goundwater
contaminatfon
N
~
01
~ r
APPLd1IM A CategnHcal Iioart Mnlyols
llcuenca u! Ptryulcua Fm4rwumut
J vocac (bagia paga 56y
3 1 1 cound Wnrt Qiwutity
o ldottng tomdlcfano
M[etiUal orcharae Era RcvaRn Dfauose] 9ntn tlroluflLld
NnNe ia and 1::
7ho o[eca"nt tbnt, 7tu orrttatnerr reBu1u of on eoing tou" u3crr Pleaso refc;r to Appendix A ahlch has updated this secltan busod an Iho
tJuillty Manageeent p[ogru , luva nnt prwlArd .iy cenniuve rnn- ~W tv0~6I EI~~ (~0~11.
eluolma rauurdlup patmtlal rcelursn hy 4relafleld efPluenta ' etwuld QUY
de updated cn ro! Iert cnrrqit lntarproation of the f lnnl rata qualltr
data Aa ttrugulu4 by lhn wrlters of lhly Il19 tha preUminuy tr,yulta
uara baaed mi ata eontb* of dry vaathcr wpla Cullnctlon Oata frw
Um ru veatlicr asapllny pertud dmourrntd o sIOnlflu+at laccurL tn
cilta ruochuig ground wtcr vln poreoloeiai tra the lwedlate uurfaee
A Ulgu J~@rui ut lnUuenen by uptle tank ctflncat W nnt ynt nubatan-
tlntu! tmc u µnrtlon nf thcoo eunteeinmu nrlytn euyt ba o[trlDuted on
uItu iwvign dlupoaol
P(IQC Jl MOt'ai
N
~ thn wtateMenc polutfag our Y6B pruUalosry dau draanotnter tho muu
V stgulflt-ait aalt lutrsnpa uewrrlag ay tla aqutlur puren uuGtr tlk NO~Ed
City of S{roAanc and tLe arau co tho aarth hoa b¢~ narclallY wplalaQd In J
LeaalnrLitm of uw tmicr dnw Crooyweeeloaol platttnp of YQtI dtltQ A(`-
awaatraccu u 4n8rcc of dvrr (tav ealt ewecutaclan vaeer) faflov Ru cdo
oqulfct ce be hllher ttmn arigfnallr Mntlclpatod fie elvur dtlutfun nt
aqullrr salt Fnr°mitrutltmr !n the Ikst Vnllay anJ Huat 3Fakane aror
qyaykrd rAo snunt nt "lt Inc[eaae9 thrwgA thta uw lohen t6u Ilaw of
r(acr mu1 aqulPur Stve.rgu thuco Je ou uuOar►trtndyble clwogu la the u!n-
puraLin 1uPact aurtaLU aLtlvlttun GCC AOV,{0$ UII VD[LC QLL1ULy
unwr uJe
b iTm Pmbnl le lanert of Prnnaaal Aetlon
71w busb tor saking the etatemwnt that eaago Ciapoual feaa
fAtr rlte vau1J cepcarrut less tEoa we-tenlh ut nna prrcent r(OtCd
of the toWJ f14w uE the aqul(er sh0u1J bo quallfled lodcl n
ll8ura nl 43 pecccnl of tAo totol vatar appUuA 6ulop avulloble
fo[ putcolutlon dou nut aLcuaurtly npply lo 0 otealgMt por-
enncdgo [o oach of cAn coapononu 3soogo rtEtluent bolny eom-
mnlq InJnctoU ac Qr,tlu da+o to 36 IocAcn ueuld On aaro avall-
nblc foR peeeolnNon than prrslpitation aad 1rrfgetlon mlaturu
duureee w1ileA uut pmn throupA tde tap ooll area of fircateut
ovapo-tronoplrmtwl tnltnuyeo
3 tl GrouM Slater qoatlcq
a Ixloclcki CuudtLlano
Iliv~lca] anJ iuorpinlo fhmleel Ctaraeterletlce
II) Conwulaatc Le.wcla In &acr.sr nF Rrin►lag Wtor otnMardy
Puqc 11
71113 dluiu9glUn ot Iudurol prtmry and Setondary Unwr qwiitq otmlZrdo These holations are noted Dc,isul lnformahon is nAt included twcause the
n[ulnttuna utwulU bL ezpandM to lrtclu9e [eewc loforrutlai SFaelfl-
eallp tUL Jlarovery of Eactorlrl contw►natloo oi tba Cdge C11fP rell gtes arc not proximate to the proJect sile
iuJ thk- occurnnco of cpniJe eoperntt0deun eGWO menownded lavels rtear
tAL linfnrr ltrod 61anc eh¢uld Oa mntloned
PaQe 81t
Yir epiiularlwn tAat o reported afuata level !n accean ot tUo etandard at
olte 99145-:6W aay De !n crtar Is dfdalohed uooalwt Dy teccnt "108 flnd- Noted
Ingo Y1L41n tAo entlevr of the Choater portton a( Uie nqullri r:lnLs
u LauJ ut wtcr wlth Mgb ralt toncratutlon Benooaol ehilrtln8 oE aqulfer
wi[ar ievela co6eNiLr vlth .aaplo rdnillnµo lndleaee thte daasl lo dlsplaead
w thi Lnuth a+ rater lram tLL rlolap min aqutter flae Intu Uk uu
CuntrnNly, na tha cenccal poctlwf ut tAe aquffe[ lell* to lwrar lwnls aad
N thc Cktatt r fringu ert-u Jrnfno chu tuad mvee natehrarJ Tiile phauescna
.P caisW eeplalu tneuaslutunt uleutc eeedlap durlag dlffar.nc aqul(cr utnva-
OD tlon alltuatluna
IULtOrtcol Yuter 1juollty Trends
f'age 81 cant'dt
rhe 1ee etu,ir renurcod ttele eew' le tensd IMe teUabln Geeauue It ►s 'flus comment is dtscussed Ihomuglily m comment No 70 Tbe reader is
Qenrrally tI,a r.6ult at Ieoe aceurate and relleble walytieal actlwdn Thfe Q
PruuLqutlun Lr rwc eurrcet AItAaugh Iluld nadlnµs wete toaad tn be eho„t fmC t0 dtgW tllEji OWO CAIICIU90ri8
2k`, bli}hLr than laborncory radulu la leocing far nlaaten e mtteingtan
enefflelrni ot 0 98 rae duenlaavl apJ thu $DE (ldd renulto oYCrrd4J the
pLrfnrtmndr exprckcl aceocding w t4o iTA yubllcetlen deolto3 vlth tbta
oubicrt Llkkwlxn elim rhlurldu r"uta tohleA rern rouNhly tUi htgher ln
i1t-Jd natlug tlwn lahuratary [couks vere judarA ol nduquata recutuy
Reoent +nirk dunu Dp the 108 progras ladlcatai ttur tAetu le lnt4.eA o trmd ~O AO ThBre appeara to he substuntial confllct on this point between the Umted
at ehauµlup aater qiiulttp vltAfa dde arei Tfw hlrto[laul tacrenoa lo ~
ealta pursllale populotlon dewtd lUc lack et rollu6{11q af uldLr am- Slatcs Geological Suricy and the"208" steff Complete informolion on wells
pleu 1f. tctuytntcrd hy '!(ui" Plannere twrovot lt is thought [QU tbe larba in ~be vicinity of the proJect ~te is mcluded u1 Append~x A Read~rs uce free
uunLer uP a~lia 1cnU Euifflclmt relWbllltp to lhn plot etwvtng tAlO yp-
uard ttfind to tonrlst4o thnt chuugn tuts tatai v1acQ tocome to thcir own conclusions
. • • • • • • • • • ~
s • • • • • • e • • •
- ~ ,
13) Wtcr QwlltY YArlattciu IIIt6ln the Aywi[or
Papa 87 rnd 861
Aia aau[co ol oult concaatretloit laeruaas atc cntteuly Gctter under
ntaM than at the tlnn oC the 206° PraUaloary Witor QualtCy Iteport ~l 21 piease refcr to Appendix D
iltc etou-rretiatal apptarcb W datetolnlny the rlv`r lnflaouea dKrm-
2trAtLN a cic,r plCture ol the Incrmrm Wrthseane the vot rcachor
auapllnp dcaunacr4xrr ■uarlUeatlnn taLes plaa !a all Dut tbtao al eho
2Dd" Jepth aoleaclw well• itaee euQptlow aro thoAght to Le under-
ntaod ulttWUt Jblolruln= da vallUlty ut rtatlulcally wnRlrcd itracl-
tlcotlun Ut Lhm rSJoeAty of vcllr
Gtaro 4atc[ Urnfiaan
IOnge 42 nnd 941
11ie lmprmelan m1g4t 6e glvcn tlut dLsolred lnorganfe wtedaL ccnet!-
tuco tAo rmlp putmtlal Far gawnd rater wntadnaclan from aton wotur
dralnagi. 7hu patialais unJ p~tleWms pmntluued aatllcr uo a watoru ~ 22 NO ,
tAet mumt be eonpldwcd Alao !t 1o loportIInt [o nota ehst Wo dry voll
appraacA ro otorn uatar dlryail provWm a eonv+yaneL seclunlns tor acel-
dmul oplUoge nC aor nterfels to racA p[uimd vatae
e Meweureil to Mltlaets AAvorse laouu
Pnye 44 nnJ 90
N fbL cunclualaa t6zit 1w duwlty dew'elopawu wuld bu eubatautlully nore whdC Q►L1L' may bf, some problems with cot►nechng to previously
axpcnolro to etvur e ccntral aango tsaedcat tncLllty la eatuhllch" ~ should raae4nlso tlut Utara ato slAal!lcaac ptoblau !n GouWnu up a aye- ~►ve~ed ataus auch problem~ wil16e smnil when co~stder~d ln 11~1 o IOSB
[Co 6I18t Y0D Inetollcd ln the aDuneo ot a motor plan du1tnQ vtth pl.pa thal wiU lw encountered if such u systcm must stnrt [rom scrntLh
uenrii O1Ll AOC tIOY IIStCtt100
11ie g.mjunlu7 tfut ManftorlaS +ralls, umild eielgate ce pregenG eeatarln»-
ttwi u[ drlnking xater ru{iply velle adould eonotdor tho faei tlut te vuuld Monitoring wL.lls were sugWeted cu a pntentlal miUgtbng meosure lhey
bo dtllkult tt nut lopouyl6L en raWav* kM rnatminnte p6t1lC8 VItI1 r (1~ (
uAort-tlra notleu Aleo tho uawt ot coatodmtn that Ean bn pturad In need nat be imp2emcntcd.
tAe uoll Fot annuol porcolotiop w gromul wtar lu ualnnw A plntcwmL
oP mnltoriog welle wI11 alwra bo nuop¢et to thu rctitLv uf data dino
7 9 Pnbllc Yater Suqyllm
b Y'tw Yruba6la It4lCt OI FCpq01tPA flQ110t1
E!'Iluant (hwUtz
Pagc 99
ttm roytnaec In tho comparlaua buNecn nff lutat Quellty of m ncstvaced
aluilge ryntes ultli oeptle twuto !n ta poiut ttut the aron whcro the terrar TheR {a considerubk Jisagtecment wfth this poinL Tha wrlter submUs na
b oupuclor 1f soanttuetrJ aud aQoraCUJ wrrectly Yhare le a pa[aulla! ~V J informaUon to support the stntament,
!nr cupLle tnuks ta aanttt4u[u lren tocol nltrotira tu ttm graum! rator,
and ttrat cAould !ro reeogulaed
Pege 102
Tlw dlocunQlon of Aoelotla and vLrua mncludne xAet punrftoHan of tAnan QQ Noted. '
utum.nta to the vptpr tebla la unllkely becouxr ot depth to wter mnd lw L0
coleture nmtent ol tho eo11 Thle appeare to bo a Mflty eaocluston gtven
rAe quaotfona that ohla drefc PiB hne preeeated aDouc the aetatura nuuea
Anlpg duo to tGo suoet rnntp tan perlod iuccALcmuro tt huA bcrn eetn-
blloheJ In ona coatrollcd teat 1n Co1lPorotA tlut Caeterln tvavnlA-d 3 k'
Qeat chruugD null Nhen prape►ly demtbaed draln[lnld arnteso ean dln-
puret. tho vaetwator to thv atant tlmt the so1.t 1o sn nltrtHve treat-
aruG achanlao
tUL uoc n1 trrltoq treatmaut to detioa treaumet taYfug place iu aoll Elw
myntms, to rololaadin8 Tho ualmwfw IqYOlvrd tu tbts eYures procludn
tM abLLltp to Joflau dw end ptadnet ot nnr diran tleo ar undar dllfcrcrtt
londlnj{ totnu
e l1Lucureu to M1tlaate Adaersa lapacto
Pigu 107
tlia ptntetirnt 1o aaJe tlur Hltcntaa are th4 pollutant ot greateot cancem It is important to note that most athiar eonstliuents ta the efiluent t'rom
frea Rho dlepoaol of unntu vntar a(tlucat la Pub-surfaco drnialloldx lo- treatment systems are subjeet to stguGcant removal us lltey pass
<eteil uvar tUa o~ul(ar fie (ullwrlt~ qunte tms tAo Suanry aod Conclo-
Uone of tM IdeM Pnnhnpolo IlenltA UlstNet IW l, fround 1►ator Qunlltr throush tite sotl column above the uquifer
M[MlCog-lnq YOCAIIlcal HCpO►t, fe anotAor vlew wrth ooting
Nluotno hnva traditiowllq IIecn t!a tLret eoaponcnt ot eevagn to
N wniteae ueutr to arounuwneer file U due to tAn fuct thot tlmy
Ln are hlghly pYable nnd e=t[moly ooD11c einee tAar dloeolva eanlly
0 la vatar Illgh altrato levnla oro not ouly e puhlic Mnlth twmrd
but are alno cunaldered hoPotngare of otdat caatamtnutre fraa thL
eemr doureu tdnt orn laad noblo laam euhflo mnd rapulro o loager
parlnd of craeoport
~ , • • • • • • • • •
U S. ENVIAONMENTAI PBQTECTtON AGENtT ~
REGIONr 1f
I ~ 1100 t111u AYIMUI ~ ~ ftAT}ll W~IMINOION t1101
efbi aN/5443 RECEIVE~
~ai~c ~ t~1e 5fP 1215'4
Spakanc Camty Plonnfnp Oeparcwent SPOKANE tOUNIM
ttnrth 0 I1 JeffQrson PUINpIIIC DIPA6TMENf
Sytlldne NA 99201
Ouar Sirs
I!r hara canplrted nur revlcw of your dralt environmenql 1m~ct
5tntrmQnt for the Nldllaam SuDdtrlslon in 5pokane County Naih-
lnptan ano'aould 1{kc to 9ubmit tlm folloning comiants for yrour
considuratlnn
N Tlu dralt EIS prv.sents e&tatled ClscusSlon of gCOIuDlc teucwrc,
tn Uie wuter qual ity mnikor(ng prnqram, end the walnr quaHty ot the
Spnkanr 1o11ey • IathArup Pralrie Mlulfer, bul falls to oddress o
nunbcr Of IteM rMch are neednd to odeqWtety~eMOluate pia impett ~
ut the 'prajett+ unan the Aqulter The finel EIS should address thfl
fq1101+1ng c0iitern,
I ifhei 1s din plnnnud slte af the prpJect 925 343 ar 415 1ats? 28 18 As Qroposed the msidential develdpmeat w1U provide for the constme•
tinn of n total oP 425 single family cemdenttuil uru1s Of QdS totel, 72 umts
1 Tlu U xc Indlcatnu tlwt 21 er 21 unlls ore elreody iuing
nepurnto septic tanRsu mc loeotian ar chese onsts snoule ~e hnva nlready been approved and are presontly undar canetNCflon TAc preseni
he Inclcnted on a mop, showlnq tholr roloNpnyQlp to the uction is fai the lai roval far the bdlnnce of the lots which would tatal
propascQ centrei trealment plents uroin fieles nearby off ~ P aPP
site drinl Img ndter wcils and oft nr on sllo monitaring rmlls 353 wuts
3 FrepLr,slW selecUan nnd da.ign for the centrel draln,fteld
are Impnrtant to prouct the Aqulier Tha 11na1 Ct5 should 90
pruvlde a detailed speclHcaHan prosentimq e aap nhawing tlio J
locotlmn ieo aM tnm ef tnemant plent o cross-ieettoti Z9 Pleosc tefer to the map attuchcd to comment No 63
of the Aroin,lield ehoMlnp the prare) till materfoi dhyth
of undlswrtud rieUve sof l or finn•pralned flil wlariol
prlor to th¢ cunna grawis and a datollM descriptlon of
Uw soil Wpes or 49gregate Deneath the eraln fleld
Thls nctlen Is Por npproval of the piot and zone (.hange for Uie prop"-d
proJect. A sapunte und independcnt npprovnl of the project sawuge troatmant
system by the Wushinginn Smte Department of EEOlogy wW address the
spedfics of the drainGcld design. At Ihis hma the developer does not know
I ahnt typa af sowage treatment systcm wfll be npproved. No speafic deslgn ol
' engineedng informatlan has been developed. Tha devalopec is committed to
; tatang ony stvps neccssary io ensum an aflequate drmnGeld d"gn
I
- ,
2-
9 Radtnring ~rlis 5hould be plaree between the drein field
dnA drtnktnq aater rells end ncar surtate runoff cauh 3~ 31 Notad
Ao9ins anA dry Viells In order to detem1nx any water qunNty
9iriroeu resulting lram tho projeet
5 51nte the eftluent frqm lAls proJatt wlll not be disinfected ~q
whot i, the ex~cted nw ~ier of fecn) coNfores per ol P L The value wiU vuty unfh meoming sewage eoncentrahons and txiahng
6 Nhat wl l l bo tfw Aesipn end laatlon of tAe dry ual ls or 3 opemting condiUons 6ut should nveruge about 15b0 per ml
cateh dasin,i Ai,n MAot ditn te 1raillbla to support the
33
g4~temnc an panc is th~t the sofl coium bcnEOth No
ary rm11r ar catch basina will retmva substAntiol ununes
of auHace runafl rontaminants 34 33 Thc surfs►ee wutcr drnlnage plan has not yet bmn demgned and is subject
1 knaiteriny srsteas ond 6ulnequent concctlre tteatr,ent oh¢ulA
Ge datalled te show AnN the Ayul/er wlll he protected lhese 35 to 9PeciGc rewcw and aPproval bY the SPoknnn CauntY En~nLcts ofticc:
Jetail~ should 1ncluAo lotattnn ot apnttorinq we11s frequeiky
and untUr yuallty crmponenu ta be enolyted proce~res mW Yuibinq cpethsntw, for upgrading the trotatroent Fuilitp and
the plan for oporadng nnd abintaininy Uiu lreatrent plant 36 34 Please rofer b the cllsrussion un pagns 99 through 101
(7 IiAcra Is the epw drlnkiog retur a,l) to 6e luceted2
kfl ere en4lusing cuqies of the fPA Intcrln Prlaary Orinkinp Wlar kegu
lotions • fnntrel af Orgonle 6lieaicul tontanlnants In Drtnking Yater
N om1 lnc bul~Nncs for Revlcr ot EIS s su6Jett to Soction 1424(e) at A~ T~~~ d~~~g of a monltor~n~ weU program anJ subsequent correctlon
Ul the 'afa Qr9nking Neter Act Ne Mupo thesc 4ucucnts NI11 Oe ot use 3 procedurea is un ext[cmety comptex system depentlent upon a number of
1\3 In preparlnq envtraruoental tapact Stetecents lor suDSequent proJecu
vunables not tlu, least of tivhich is the waste water manage program Ihat will
ke apprestate the cppurtualty ts revlcr Nis 4ralt envlrorvrcntal iQq3ct sharU be recommcnded b the S aknnc Ceunt "Z~B~~ In addi~on
StdtCifiPlit PILASL JU flfll IIpSIIdII' RD COfItBCt Q2 0t OE}IR1S OSS011lCq 01 y y p y pf0~m
rly :wff should yau Advc t1ijesttans or Ueslre Purther Inforrnatlan negard- thBCe pp(1Catg tu bC COn9ldCtablC dtYC[SI1y OF Oplnion OS t01hB aOvlsa6fflly Of u
ing cur euaniLnts ai can Ge rraeheu at (206) 442•1285 or (f15) 399 1285
monitodng program ThL, delwls of such a progrum cannot be detaUc.d at Uus
Sintcr~ ly
bme
,
AlexanAre 0 3adth Chiot
[neirortrQntal Evaluwwi 8rarch The new wutrr weU unU be loated in the extrema noriheast corncr of the
36 plat near tlie mterseclion uP ihnts Road ond Thltty Second Avenue
,
• • ~ ~ • • • • • • •
Y
UF,I'AR1AtENCOfI(ShwRIES
~'81 1tAMll11, ri lN 11514 in -N~t N.inu.-.k J
/~w r I o
~
nijyiist in 197e
RECk 1V 6~i
Hr frcA 11jiyliorsh Ulr'utui
Spnlino County Pluiuiin9 Ropartaunl '
Mnrlh 311 Jelfirson C 4str
5uukone lua►Inngtun 992101 plANt yt
(Icar flr GaylMroti
qratt [nrirqrowntal Impact StelLmant
NId{i(ft %UtIIlfY{4if111
VpAmin Lounty kRiA 1 57
Nl hnVe IoYltrnd lhp utv4c dP.erl6eQ SUtement and ofier thp fol1owing
6fu19 CfII
N Af ctmuorativit progruui involvinn pee rcarinq~eini relea.e o{ fell tMnau4 ~ No respotue t~quuea
~ saU,ui Intn RcuneveU la4e fs pretprtlv underwap It p~ R~~'upiad`thnt eAr
w nunqicr of fi,n inralred wll) contfnue et e rathRi conatent livel NA11e
,irtull AItteIMitlnn ql tAcsu rrtsldunt" ft A fme not brce tully nraluatee
ni nsswne Umt lliey p111 re51QuLillde In the telr
Utlier 4unJruninu tuudf Ith btocAO nrr not fuWul uPstrr,fm hwa CAhtl Jastnh
Oim Uws any oup,ccs froni the eubject nropasAl to theei. sloCl, vroulQ Ul~
lulllltily
rlsli icldur,,rs Imnxl in lotnt reechnt nl tAr StsAdnn River ,muld ~~u nppro
pritli ly oddressuA Ay the Gamu UoWrlnarnt et wcll us plonnlU artivlLles
whlcli i7fqht pl'Iecl thiS ff Iti hnhttnt
thml ynu Inr lhr uppartunity to rorier ynur titniemml ahicU oppeers rell
m1~onizal nud clt'no ly prcyents the proposul
51nCarf ly
Cojqn~ 5jmtlsan '
Ui rrcRnr
Is
i r Oflf
HfIG
~
j -
~ - - -
UQ-1' ~A~OF OEPARTM11kfdTOF'I'AANSPOf~fATION
WASFIINGTON 11YY Il1
Auyunt 10, 1978 '
I
Mr Pred Duyfwtoh Dlreetor
Spnkane County Plannlag Ocpnrtmept
porth BII Jetperenn
Siwknno Naehlnqtai 99201
] 6puknne Councy
111dllam Suhdlvlalun
pruft Envframcntal Iapaet Stocament
near nr Dayearnn No response raqutted.
Yc hnre cmpleted aur rcvlnv ot thn euLJeet daumunt um! (nul tLc Jucuacat
aildrc+nco adoquntnly the Impoctu to oidior uzlutlug or propaand trnnaporto-
iltlu faelllcleo ln tAc orua
Tiwnk Ycw tor thu upportunlty to tavlmr thta tefnrmtfan
N Ssaeerely
N R061RT 9 HTCLSEtI
'p Adalntant'6eeeo[nryr
Puhik Trnnuporwtlon
nod Planalaa
«J / ~7{
tly 4K P d1.K01
F.nvlroawuw! Plnmce
M rb
WP°rW°" R ECEIVED
ec U A Hnrning ~
u n nnneare AUG 2' 11978
HnWmnmentnl 6Er[ton
SPOMAtIE fAUNfl
Pl11MNlltG 0[PARIIAEMi
RECEIyED
.
auc 2't 11570
PIANN pA6 DEPtiASN[Ni
~
i
-r
VW
~ _
AfR POIlUTION CON1ROl AUINORITY
IGIIIII
Auyust 11 1418
aan
~
nr Free Mlyuarin oirecwr
Sproyinc County Ptanniey Uotbrweut
Iloeth UII Jefferson
S{wkana ui5htnqton 99201
~ War Ilr Uayhai-eh
Ma bavic envicwi.d tha dra(t Enviraiuxnlol Iqqact 5Wtemant for tho i
N Nlclllmiri Subdlulsion UL cuncur alth U+e uver,11 imdin!;t of Uie oir
(!1 qualily xcanon w1tD tlie aAditlun ai tlio lollanin9 eRaranE..
~
o) fha propOnent s Intentions an pnring 40tn Avrnue on not
nleer Unpn6a tRls raad cauttl ipmva to M. e wh.tan 31 31 !t is the developec s intenhon to Ymprove and pavc 40i1i Strcet.
c1n1 enltter oP ndrtlrulotad Ne ask tlat iho praponent
clarlfy p(s intenttons nn chla muttar
4) NL efsh W nmphasitc lliat ait►I Vroper dasiqn end wfn
tciwuLt packoge snMOgO M-Ulmnl plnnb ihoulU give ofP 3B 38 Tlus is cnnsistent wtth informn~on presented in the impact smtement
nm atbns
c1 We nlso ask tho proponnnt to suWq't a aore ~Wtalleil out- 9e 39 Thc detalls of lhe dust abatement procodurea to be uWlzed will be
I Im. af plenk tn ehatr dust iliirln l cnnslr~tinn' Jl ~~~~,d with SCAI'CA pnor to conshucNan
ue apt~r~eclate the opporamlty co Rrlea tinn ecm~.nt un ania arart
EnviodmlenWl IciwLl Steteaent
Sincoroly
(5
Nlll lam T MurplLv
Air Qwlity tnglneer
~ l(TIUIt
I
r
S(Jdtaf12 C011nCy 1
Wa1[h Dv,,[fiC[
`~ra~f9iC~regoA+ee►~ S{z~u~e~rannqwno4'1Gi
~ ~nu~11~ ~ 1 i
;,~ptrater B, ►;It6 ~
Nr YreC GoyUUnA R E c E ~ u~ p
County Tlar.ning tllreeLcr
"pute4e i ewily Plennlag Cadulm
a Bii aerrerow, .+E- 1 *76
pnrwe vA yycst SPONANE OOUNIY
NE Nldtl"m ..ubdlrlalori - Ilnft 910 FW{NIM6 DFPARllblf(f
lear Nr laojtwrah
9No lpotens C-mmtr HodM OSstriat Iw nnleved the Anft onrironrntal (nael
zutczent t1lAllwm 5ubdlrLlan g.apwoe ey ttaworen .na Awaeno,, tna md
fwa the to2larinR ceaseeto
N tu tne IntwaWctLaaSo+te i, e. rn 2- the iutseent "Tl+e pe*ooed paelav
v1 nerega Lroolacet fariliq md dlstritutim eYfta ves Approre0 Dy 6At Lpo►me
ON ~ ~~mment is n~t~d.
Sowty f]~Rlreere m Itey 18, 1971 and ly~ We 9Padune Comrt7 Uaa1tb Olatrlct ot1
.lulg 5 l9ii So ont ucwata 2he 8ealtA D1strfet appmtal vu tor ths
"subjurfsee aav4gr dYapoeal fac1116) 660 AO oLAar poKlmn of the qilCm
Fepe 13. 01 Weter - 7Lo depthe to vata► taE1e aro shmu u'f0-90 feet Qur
reeoMu shaw tno dapt7u w be 100 reet ur iwre rd.n ground eleratLaae ae 4 The deptli to the water table may vury as much as l5 feet due to scasonnl
nInUer w tlu ulle alemttano 41 varmtioas. Wutcr table depths to 100 fcet would bc withm the anUcipated
Fute 1lld. 19 Yntcr -!o ppacraS, t4fs repoA laplla qter a4de0 to the Brotimd vnnnUOn expecied.
at thla olte ►entAea the npulfar '1h1i li wt a ptore0 Oprpntkals Tqe eoment that oitntn ue aal 6eaerslly retelned Dy noll aolaae ay De
rhllaaophlcnDy lruo hoveror, tAere 1e woantte8 dau b sAm nitntm ara
ilenltrlfleJ !n eoile It is tnue that uvoibble datn dces not pmve conclumvely tbat water
r.;le 11, riaic aervicon - You h11 to eddnai addad bwdan aa the beL1W OIslrlct 42 dischutged to the surface w Ih1s areu woubl tvetargtt the aquiier Howevtt, in
md ather Enilh care 'fM camoou hero rNate to ezttcmes usosa ot tea gopu- ~ evafut+Ur►g the potent[al Impucts of the project the eansorvative vtew tbot such
lauen aay alreeyr be preernt sd recelvlaq easrlas la the vew mchup iy pyobab~ ~assumetL
LVe 23 -"h+e eerape ttaalmat systn propaeA tar the projeee 1s troadderod tM
bent errllsLle wd roucnaLle traetsant yroecs---" T1ila stateaenc should br
kwardea !t rary voll Wr troc De the •oe.o ...uai.•, vrait in u&c ar A~ Tliere ts httle soLd researah that ltias been donc nn potdnlwl denitflt3-
ecaancilca ak, It =y Ce LAe reanohoble syrim ~ f cadon tn soil columns. Much of the roseurch to date is not tunilusivs. Il 18
' agreed thnt Ihere ia some resenrch evailable which does mduc►te substantinl
At&T,1ranon 450 WO 436"W den►ln6catton in soil columns
c,~c .56-1eaj vimsrwc, uoxn umWn 001"61
To the extent tlwt tlts project wiU cUuw new population inlo Spokanu
44 County the proposed ptuJcct tvould proporhonntely mcrease tlw demands nn
tha fiealth Distnet as wQU as othec govemmental semces Housing projects as
lhot proposed are not genaratly considercd to Induus growth intn Uic uren bul
morely arcommodate Ihe gowth that b occurdng for other reasans
~ ~ ~ ~ ~ ~ ~ • • • •
The proposed SCrvage trealment system has bftn detarmLx.d hy the
W631nngtan 5iah Department of P.tWapr to be the "~st avuilnble and
masunuhlu" tmntment systam mvalaWe, Sueh adatemihtahot does not menn
tlkut dub syatem Ls lfte he9t avcult►bla nt any pnct, AP, dlwussed in the AEIS
other systems includtng tlie addAUan af den►tnQcai►on urut ngcrations to ilie
~pwm4ar d 1018 proFosed pbnt ara avaJlable but ue pto?ubiavely axpeasfrt nt tius timu
~'rr~1 IlqghaTSii
4~ A~ Alternnte dLsi~n tant~epls ware tiiscu&seai In ~eneral ~ u Is~rgc urruy af
~ pateehal dts►gns arc p~~161e.
FnJe 96 K! - Alternat¢ Lev¢SoFaRt, Cnnce~u -'(oy dp ~i IualwAa dlfforrmk GatLaroi
auLh nn rul,de-.aueo c7uftere, ew 14 117.{N ypp a63Ge Ehe una pf sapklC CC+u Y9LY1J YRCf4f10d potan41o1 rur g~ownA rater conSealastlrtp Siile ia 4a ~piarad 47 Becat~ OFtbe tmptaved qunhty af acbvnted studgc s~+a#em et~li~etits mrer
aLUU-nmst nnu daeo net egpeer ta ba M JWtltin4 o4stamnt supric tanbs t1te use af septic tanics in pnarsl muy pose agreatur risk tp
I'+-gs al • Stm d■r.r, eu pltrqnen !p ettlueot !a qwetlapahlv 48 gNUrtd w3tet qutiltty Tlte oyerriding consfderation, howeyer, is ttmt law
L~jt.A~ . f,l -`t'Ca ~rrmrnl aLc~L e}f2wwt qvallCy fn~a ntabYfloetimo I~es wA den~ty dtmlapmLn~ subatantally inacas~ Uae c~$t of the c~i~lral collucl~an
3.gmmn lrepnj WZr21es1 mu6 L¢ Qumf~leaed La4 Quaf! tlcd tn ►~Mre rsaFaete t4 lm 4~ A71d ttEIlt111@Qt Pj fipWA~+$
"msr,~aal'
[,arr t5. Aa-Sitc Ynxervetar'Pre~uem -~an dl~cue~la~ affluan4 rtuollly, apealfy ~n T~le ilDtb Q11 IUii4pri CO11tC13t Or QilIl0U5 Il~uBfIIlGAt Sy'91CFli C~IUe11fS IS
thc puneatere 9u nes mke gert:rollurd e6rl,e~pLS ekua Sk4~ aq avt 1ie tt~s y @
kn sn,a P*oJECc buCd on t11a IEfe1enCC quozed Ori pap 31
in dlocuanlnK ■Ytaripatlnp yuv Aarc not ltmluMd r"or•wo reserlatian dari9ea
S'h~cc'ew Lare eaasldenble l~Act Cpe wi Opter [a we qe~c er a 7~ 4crs aite 'ilte efAucni fium sIabiLmtian pcmds and lagonns ls h[gh In suspendc.d
tur m ~n~n lapewn~ i,~io acranda ua be r~autc~t ovur hq~
~
~str 93. Tnh9e . TMre 1i rn ertpr (p wqp141wi and suDtnetlon fdtel opplled sollds and BQU wiuch ottcn makes it unsuttable far djscharga iu surfs~ ►vatnr
vatnr fa 9eer 202U eh(wla teu~u "36 a4~
M.wr 41. cMen+tc.1 Ilwraen. Trmonark. md Qu . T~e at~temnt "3vep nei aafsR ~3 TNfs eomment oq pt~ga 35 is A ganemi summary af ~ext~:ns~ve duta tlwt ts
ta tea atrang 1arYa r~ rwniqo tahha end 4euak araidauie eaulA raauly ln iuai a mrludcd In Appeadiccs A and C.
atl apk5le
ttR4 IA'~m "mP4Rd RmfO f~]N - TIIa C7LIGrIdlO S1 Yl1Q18g{CRFly ►CCfvi 6C LEd aRYtga
una6tauully ndtla beelarls epa flqtil4RLs tnW e aatlabla tnrleanmont 5 TI1B u5ti of Wptcf l'e9t1¢CUOA dzviCQ9 caA be YGty RffP.i,ii'Ve In Ii%lUC!!1$ UID
4ery ~ruly ya~lra, Iquontrty af wwage that must be twated. Such dsavicas wore nat addiu=d in
the pEIS becnuse thare uso is nat tirnthia lhe control af ihe developer or tlie
imawmg apandes. Th4w use is nlniost enprely within the discrcdan of tlw
tnthrndual homcawnce.
, f41v3rv1 b! 1'ickett, N 8 k P 8 RL 4E I V ED
dJtacGor 52 'ftvs carrection is not$d,
av
SMu+E Gou"n 53 TWs comment is notcd.
p"IHG OEPOTMEiIi
Thu cammcrit ts r►nteJ
54
A
r
RECEIVEd
,_W oi 19-u
tro, -tr kr.d u.yrnrah nlrviahaE COUnII
.,pulnnn tow+Ly Plai~~bt~~Qn~Aiutnt
FhUM loYy A4pilelJfo Ylnnning eud"Troffk Ulvleloq 8nglnoer
SUIUnCfs ltraft C i a Novlowc N1a11oor Sutdlrlolon -
Cfrauletlon ond Traffla Opantlonn
7lw follurlug ......ntu nro prorldwi tur ywur rnvlor md canoldnreUoot
I . tutaat StuaaurYi poacrtutiun of Tm Prouoaod Aellont
~re they are rcquued by
Yera~nph (uur lndicetee mi aldorelYO aro propuood Ptueoat Cuuoty yuilcy Sidewalks wiU bc provided by the devaloper wh
County ~eguladan or QoLcy Thc use uf sidowalks ts also ineludcd as u
InLluueo etJauel► aonstructluo olon~ ertarlal routeo. IneludUyq rtntqheorhood n,cpntmendpd IidapWS mCaSUIC WhPie neCEBSary to tedUCC ttalljC tADgCSl1011
aulluotor utsrlaln ln ouGilvlelone Slrue thin yruJoat !e mwnlud on o11 faur or avad potential Imific safety ASk,4 SlliCWalk6 would be pancculady
N nldun by nltlmr oilotlay ur yropoeod erkrlaln, oldnwlMo oAould bs lncludcd 4e important in the vianity of Chester Blemedtary school as noted on pag.-,_121
tn fnlegrel Pwe l uC'ranJunr dorelopmunL
00
p. !b tosmet d,u~m+r~ - t. 7een ~a t a Clreulelfuql
This clarificatlon is noted.
Jtnte Hlguuny G X! (~teu Mghuep {.artlon uf Plnan w+ed tn+a lbtb Ivnauo
norLh w InterotuW 90 (b II YO)) elnnlJ elw bo Iletad oe e yrtmry nortA-euutA
trofflo carrtLr "nnocNnS to S H 90 Nu1lMr Mlnoe Nnad nor Ulet;nan lUcn Nvcd
provldo Alrnct aaaooo w3 N 90 bu1 Oo prmfAe,dlroct ocaaao Lo a H J07 oad tho
Argunne-Wlan owplet roepoetiroly whlah !n lura de provtdo Jlroet neaoao W
S N 90
y. .1 Yrn4nble Imueol pf lhu Yroronnd Attlon j{&p,Gwrullon/ClPCUletlont
Sam eoamenL oe {wgo 9 aaamoet rogatrltng elGeuslk uunouuot.loa alung V~ @ See respanse No, ss
e[larlolo
N. 71 Meenluee lo Nl6lmla AArerae Immata - 'henmbttuUnn/Clrculattont
To dsb eenptwling pro►ramo Mto out baen eup{wrkG Ly tdo goiurel pu611e end The potential tntpacls from developing the prujcct site ot a substantially
uoi►ld Isnvo lltLlu lywet on atttyaltng W lroaoporenLlou 1¢4eat ganorawJ by Wle lowar density are discussed un thc Section al .Jtemate devclopment concepts
ot page 30.
I - .2_
iindlloyMroh ~ECEIVED
imt ~MlCtloio .tubdlriclon -
PlrculotWn atd Troftlr 4perotlcno ;,L p 0 H1978
SDDRAH[ CauGtr
prajat 9y tnoroouing inu oi:o of loto odd 1hroDy roduElAdMINGp06DWR1WWLp,
itn reotatlny aaauu6o of pnrwrntod trofflc oiid lWSct an tha otlrlluO roold oyatan
.lll Ca roUueod occoMlrigly
u. Il] Elamnte of II.tsAn Snrtrun nl • L. Traupottatlun/Clreul~llon 59
,,r~ cumr~nt oo for yoya 16 Sec response No S6
p• lld eeae oop ohuuld Oo aorracts0 ro Cuunty twd romup oad ataW 4lgA- sO
vor aa.tgmuens 60 D1nko Road should bt; omiitcd and replaced by 5R 27
p, 115 D, 11N ero►r}o tmi.ct o;, l bg Prgporoa eae►,o►s
am r+aaoat en pogo 9 oomoant ra~rdirq~ olQewll comuvctlun olong
N 61 see ~~►o~ No ss
(jI attnrlsld
tD
Guaurel Caiaent
un e portlon af tho prepoaod Plao Hosd frvaGego aM on e11 of tM proynsa0 sa 62 Thcs comntcnt is nuted and h~s becn ca11eQ to the uttenhon of the
a0V210pCf
4nth Aannru Pwntago onlr o Enlt - 900 rlde - rlEht-ufanY 1o ohoun an Iwth
Cuaoo & fUll 600 v1Qe rldht-oC•bsy plua full Improwmuak r111 ba royultud
pT1or ta Vrovcuolnp o tlml plet proyosel far tGOeo tuo npoofYla enine
11ao, ua a purllan uf tho {ttoporep loaeted tmsodlatelp eoutp af WUo {ctaponnl I
e prolloliury plet F6 108b1, Ib13oy AEdlUoe, 1me tqea ruriewd Qy Un faimty
Coualanlaooro 41m n+nd doetgne oP 'L1q ►w VroDcaele m.mt !ro eaapaLl41e nal cMn
¢uy bi a noed W naLu deolgn odJuetaen6e In tbla propanel to obtaln 4hla eequi-
1D1GIty
~ ~
,
r
RECEIVED
Septeder 8 1978
,sl I' U n 1478
nuaaanra~uN SPOKanE CoUIUtrMr '
lQ ,pulAi4L~'fl{~~Ly~PAI~~~~'Viporlment ( ~ ,+r
fNOtl Ullliapi Uubratt Assl~tnnt [ounW Cngineer
~
51IB1fGT 4ruft [nvlrummnUl 5t4tauinl for
09iAilrm SubAivisfon
IhL SpukuiiL Counly Engim~ering Depurlment Iwo revlewud lho drofl t I S
14,r Ifiaiimm siindivib+uii ana .utnnll tho fpllaalny and eltacheJ comw.yits tor
yaur conel0erstlan
VJ9N IY Plat Qesiqn Nap f0u areas ure indlcatoo for droinflelAs TI►e plot dewgn pmvidos for the placcment of the drafnfiiAd in the
The nwp tnditalos Iwu,o lots Aouaver f 5 ur 10 ocres ol drain• southwest cornec of the project sjte, as shown on llie following tovised map
N fleld la requlrM (based an 6 aA 4 yal lon per llncar Pout re5pett-
a1
O ivcly for dralnfield dtsign) o
~
Paqr 57 Mater AunufflAbsorpNun SecUans 2 and a are both m!5
leaAing They nrr triin for lhu de5lgu stum (10 years) Ijul not 64 ' 64 Spukane County policy requires Wnt fhe starm water druinagc, system be
demgned for o 10 year storm The speaFics of lhc drninage ptan havc not yet
true for any s~ze sto~ olher thon that b~ It a oue year or onr been ileveloped but ace subject ta specific emew and upproval by tNe Spakune
iiu,dma yce► sconi County Engincers Office
Pnyp 102 SluJga Olsposal ff 5pokane County oyeroles end mainWins
the trnitnent system roe slodge woulA aor ee dl poscd of at the T118 ClIIflfiCafiODlS ROICd.
City af Spokone lreatmrnt Foeilitirs 6at ►could Ae taken to lhn
Cowily slud(IL diSpoSol situ
lhn atwcAod mrmnranQum IntluJe carments on Grculatfon antl lrolllc
and 4rouuU Wnter iapacts
~ ~ 0
~ I 1 32ND AVENVE
PROPOSED WELL SITE
r e
~
~
~ Exbting PorGon
i
,
. t
cA ;4'Ldilome Addition
w
~
:k
O
z "
~
~ -
_
^ z
~ ~ .
~ -
,
,
SEWAGE TREA1'MENT PLANT
. . : .
.
. . . . . : .
. .
. . . . . :
. . ,
. . . : . . : . . .
. . . . . . . .
.
_ . . . . , . , . ~
. . .
DR,AIlNF1ELD SITE
. .
. . . .
: : : . .
. . . . . .
.
. . .
: . . .
. : . .
. . . . . . . .
. :
. . . . ~
. . . , - ' ~5
~ 4UTM AVENUE
~
S'TE MAP
As
~
N
ir! ct rR`7i t% :tg,(A 8%,
L r ultru t 01 i ar qul yr~'a c ;,rr, r, i qn 1200 FK; ~
~ 2V1
7 =
Nf~iuRAnblUl St ylc,dinr 6 1918
Itl freJ Wyhoish, tounly Nlanninq pept R E C E I V FD
fN"1 Ndy Curd 'F08' StuJy Program Nenoqer r QIt ij y
4IIUICf.i t,r)ft fnviromental Impuet Stetement SAONANt Ca0d1Y
Miallaimi 5uhilul~fon PIAtIpING UIPRkIMCDt
I havr rLvictinO the oUavc Fnviromacntal lupact 5tatc~utnt in relotion to AA
~ An extensive offort WOS made on tl►e part of the Spokane County
bb
It$ uulhLntlc lly rrv9xdin9 ground w3ter lmpocts ano Aow nccieuiotian I hnA PJnnning Depattment and the envlronmental consultsat, Nawoctii ond Ander•
Unlh to Ue romtdml outUlteal uiud tonfused TMs oflNn hat utfereA Ilaerorlh 6 5011, inc. ta ensure that the drnft EIS uicluded all awilnble dutn at the dme
AaAir un nny dnta we have ot aur Jlspc,d) yet tlu. [nvlranwcntdl ImynLt Stateuq.nl tltat it was pubushed and Iliot it induded no feclual eaoes or omisslons
naly inlludrt dola acciLwlated duriny the dry sea an ol the year 64ne spettf- Included stute in tlus effort a spe~fic reyuest for a pre-draft consultabun ~vitl~ all
and loal agencies and pmgrams wtth an lnterest in ground wntcr quolity
it.auY ny ILv1lw iwaIcnt, un e., fallaw and how it might be offectLd by the proposed prnjed Mr Card os mnnapr of
Ni tlsc "208" study pto~ram for Spokane Counly wo9 mcluded In csirrly 1une,
~t l~ fir t ~r~r ah
n~ 1978 Mr Card wus provided wtth a complete copy of ali sLchons of the DCIS
N Iht entirc parayraph need, to be upileted for eunwli. wt, Lan r¢rify s~ referl►ig to wnter qualfty und sewagO treatment methoda and tequesled by the
ricfmrqe and tht 103 and USG5 dnlo orc iml cauflittiiui Spokanc Planarog Deprctment to rewew the snme and submil any cnmmcnls
1I n 11 4 ntlri tWge ani tablt5 nn n )fi aiW 79 lu mlght hove on the scopt. nnd factual accutacy of the infotmahon Wntten
lhiti uifnrrrtlaa oniX IneludLs (I presumc) date fron US6S fl les tnere are 68 comments ware ceceived imm a awnber of uWades but none from Mc Cnrd
or nny other mpreseatnpv~ uf the "208" pto~ram On June 23, 19T~ a
oth~r tlitu which illa lroles lhot ulher conslllu~~nts ere In ia«sa u1 druikiny NoG.r mecdng was held by the Plnnning Depnrtment to cewew the matenal
subrmtted by the enYwnmental consultant and the comments n"cjved during
1 il I << it 2 the pre droft revtew pmoess Tlus mcoting wus attended by Mr Carrl, as a
ThL tabulutlun in AppunAl+ fl dnes not Im lwle a11 evnllaCle chemieal anta 69 npresentabve of the "248" progrnm, and by mpresenlalives of the Spokane
Th( aaft I tpld I il3 (S Obt IlSi rellable tlwn etAer Uote C(Airpar15cn5 can CountY Health Dbtrict, Waslungton State Department of Ecolagr, Waaldngtnn
10 Stnte Department nf Soaal anJ ~icalth 5emces, nnd Spokon~ Cnupty
hc iniilo !~y ocurrelalei! antvnl lhe I nnrlatfna cerfliGrent 4etwern the resutts g,~~~ers At Uua mccUng Mr Card tndtcated that Ilm "208" prugmm sccond
tiN~ ,,r+ oiii u-u i,, qi celur Ulen U'H whlth tndlcates 40mv.1robIP rP1YaAlllty half uqutfer sampbng program haJ just been completed bat that die unalybcai
4•i I t t + results wete not yet avmlablc und that he could not release thc dala undl
I d ni t aqrpu NI lA the I Int smitcnte miJ-August, aft¢r it Nad bQen cevietved by Mr. Esvelt the progam enpncenng
wasultunt and their Wclwcnl cammltta. Mr. Canl lndicated diat Ihis
u►farmadon was taken dunng whnt b tarmed the "Wct season" (i.e Januory
through June) and Utat it mtglU tu; subsWntlaUy different than pnor dnta lt
was agreed by Mr Card, as well as the others at the meeqag, tiwt thia datn
whpo not avuffabtc far the DEtS should be included in the FEIS Sevoral
subsequent coatacis wiib Mr Catd and the Spakane County Prosecubng
AttomLy wcrc mnde by the planning depaitment etnp' and onvlronmental
ronsultant It was conclucicd thnt the publication di the DCIS should procced
and tltat eny addihonril dutn ihnl lx,cume availubla woutd be included In tlte
FEIS
71ie DEIS #.nnGwis nll avnilable wutet qunlily datn nnd inclucled a caview
of all pnor studies and rosearch results avsulablc at the time lhot' rt was
I publlshed, Thd DEIS did not inciude the msults of "wet" scason sompling by
, the "208" progCam because that duta was nnt pubhshed nor available at the
~ tune~ thut the UE 1S was puhlished. Appendlx D, included tu,rcJn, contntnti aa
' add¢ndum to the uatcr quallty sccUon of Uie DEIS anQ mcluJii tnformutian
made uvailnble since the pubucoqon of the DCIS
ra„ Bfi thlyd uort P h
lho aukhur hAt icuafusevl Ua 208' depih tiUICCIIVa seutpilny witn the USGS Ptease refertoAppencUx D, included hetein
suntplinp program Tftn 115G5 atlempced anly ane r4perimnt lfl dP(1Ih SQIB[IIY@ ~Z 67 -
sampliisq: ThIS ended In talluru Any olh6r depth 5eloctlve naripllny ►ws done 68 The dfscussian on page 77 and the dutn peonded an pages 78 ond 79 n
not limitcd to only daEa Gom U.S C.S flcs but is u~mmury of Qatn nvniloble
nr u~v ~~ne fteld ~rcw tmm ull sources ul the Ume of publlwHon !n addNion to U S G S this
Lijao ei rout ui oira ra includes daiu from the United States Er►nronmentnl Protection Abency, 1
dia tUn of wi
10 91 ~g Washington State Department of Soaal and Health Secviccs, Spokane County
flils InfOtinatlrm Is I.rrOnWUS dnU out al (Lftc d HM111 DISttICt,°Spaknne County "208" Program ond a larBL number af pdvatc
, requunrch studies.
Pone 94 VreKlnillw tn Hetee Sunulr tlalis
Ilte author 5liould iawrlta thls secliuo to ietlEtt more up-ta-onte tlihi►Iny 74
~ un th~ fluw cherertLrislics nl the atlullcr Tbe data tabulnbon in Appendix B ~lacs m f¢ct include all avnjlnble
~ R E~ E E D 69 chomlcal duta thnt was nvaiJctble at the 1Lne vF pubLca~on Dudng nn
~ intcmew wilh Mr Cnrd an September A, 1978, ha mdiwlN~d tiwt this
'I 0~ I) ~ C0111R18111 W15 lIl iePCieOCO Itl 1I18 IAIIIiIe t0 IRLILLQE "WBI" 5euROD "208" dQttl
SPUaanE ruuuir Tlus dum wos aot urniinble at the dme tha DC15 was prlntcd bul is Include~l
PIANNMG OCr4111At(fli hereminAQpendixD.
1 Ttm u208" program Qeld date far nitrntu-nitrogcn is the nesult oP annlysis
of wuter samples unng n apeciftc tan probe Tlus is not an approved @PA
referonce analyacal technique and is subject to significant wrLbmtton naor
Tlds iS documeatdd by Mt ESVi;lt, the "248" program engineering concultnnt,
the iniepm water qunllty monitonng report published by the "308" progam
in Pebruary 1918 on page Sas follows
77►c mean rnNo of Mtrato-Mtrogen obtmned by W5U
(nutoanalyLer results) to Ihai obtaraed from tNo. "208" results
(spedfic ian probe) based on 204 dupllcule samplcs, was 015
with a atandanl dewauoa af 0.13 Hnwcver, o pedod from
Navembet 14 to Dea,mber 6 had a mtio bused on 40 duplicatc
snmptes, of aaly 064 wllh o standurd deviation oF 0 16 'fhe
rcmmndcr of the study pe,dod, with 164 Jupllente snmpicy,
showed a roUo of 078`with a standard &vladan of 0.10 Dunng
the prrtod fmm Novamber 14 through December b the NitraG:
speaGL. ion probe bmng uscd for the "208" Geld results was
nppnranUy faulty wluch led to ubnormaUy hig1i nndings
Tluough o slutistical unalysis ot samplea run unng ffeld trsting mcUiods
and duphcutt snmples anulyzed ni Washmgtan Stnte Unlversity a carrelahon
tws bcen devalopcd wheroby the 6cld datn results can be eorreLted The
comment tlwt these cartected 6eld data iesulta ean be used fur comparahve
purposes is not dispuied
I1us sentence is mlroductory nnJ qualltative m nature Specific Jata an
cherntcul qualdy vniiadons is induded an pages 82 nnJ 83 and !n Appendix A
se°` d14'a R E e E I v F p The first santence of INu puragroph refers to the joint samp4ng nf the
. zo' 00 iwz I Z dcplh sclectirve wells by "208" and U.5 G.S. U S C.S conduaLd its own
F'te° °"'h"°n D1`°"°r svoKaet couN~r scparate sampUng progrnm only thcougli October of 1917 ACtar thnt Ume atl
flP~Re Cauny PIanM~ Qett
N N11 Jaffareop PUNNINC Afpqpl6lLHf depth selechve sampUng was done by the "206" staYf However, while
spokann, rA 9q20I U S G S hcuonitnucd ►Is separate samplfng lt contmued to tndependdnUy
sveJsar - UdAPT 619 CM MIOILQ(ii oL1H1jI41.fIkB nnalyu Ute sumplcs ut ils lnboratory in Se.+tUe The pungrapli rePers lo the
1 Sfirco re'ro dediqs wltA +►a EIS tor an •afcor.tla-tart" projeel, aampatlaons ero 75 seFarate U S G S nnalytical results not to a separate sampung pragmm
asper-le111 tred Lo eirpria T hare nrrfvd ot jwt nuch nlld espicleona iq uatrg
dnth u:tota nad arotaWa ean6e fla data R1ree m Oy tla 8polan Cauney Naelth alet
Nuiaua gellmu per Qar frm a thra Eedrom aro ald to b p09 If um 4, howee rhis infocmauon on the results of depth selective sampling includes all
proeently an the eclottnR pUat (r1tA 7400 Uaoet faL of 4t11eflold) wbro an dflta ayaHable at ihe dme of ubluation and wos Inclual at Ute time The
tidirfdw] aepLte latnkn lhoy raN equfn 9360 Uawr feee of dnlnfteW 11u ,6 p
ladln6 mtee aro tlueefere ! eillaos per Itaosr fwt fow eapttr wnta ord 63 °208" wet sooson sampling indicatrs ogmter degree of statificatton at same
N lµllaro per Itnaar foot tar thr ptakzga pLn! Qa1ns Um mze 52 Awe far nspnrleon,
and botus tAo Eoelsn an • {p~.flaro a? 319 gallau per eer per Aou. ,a waaa
~ Umes of the year Picase refcr to Append~x D for complcte informadon
~ Mre n 1a"trys nb oi 1 g~P'I~npr toot rltA espLfc unAs &M 2 4 Rallo= ptr
llrtear foot rlth fhe paoteae PLnt To htdle wtnin tlora far lAa nao u haao
1t raula riqul" a 900 xpd i 52 haua or 46,0ou ePi roqnNon oipncltr Pleuse n.fer to Appendix D. included hercia
TAe aapleted pso3aet of 425 Aaos la mder to r-aldo tho oqulralrot apaclty ab
draintfold lasdlra nte of tMlvldual uptfe 1anb, mou1q ebqulre a Nent WlA 4 ~
ma+eltr ee ►andl. V2,500 g.~lons ar eay .m 76.50 11nar fost of Arafaffdd The DE(S does not addrim an "ufter the fact" project The project
Prapoaala ro'w Ibsrd aro enEsUntlaIlr lsne and auet 0e peara upan n.eeaFe tlan 7
"`t+°r t'"" v0°''u• °_+.uss rim cnts . n3ia ~tunio,z rewetivs an application for uppraval of u plut ond rezane for over 300 liousing
2 d7W an egencfu a11aiqg a supcynt1a11y artller eynon rlth a MtRot laaslnR untts lhat have nol yet been approved In asscseing unpacts IAe enhre project,
eais Ra e pVnt tlne wlll be puttlryg aut Lrge qmatttln ot nltrata-i aM other " tncluchng thc 12 unUs previously approved, W3S 601151d1,ICd.
ehealcald rtth a pigA voluu of nbr ae a eurfeH Yon't sucA a dteurrde,
awtalced over laKat perlade nf tlse /hn eoptle Wnlu, catu ►pytyullo men
la.n,M cr ,utl ..ta note,na uyoe,yt 78
) P7uea do a waild esptrtsoo of tlr Uid arn nqulred fer dnfaflelde tac 425 'fhe uze of the drninrield for a parpculur sewoge treatmLnt system is
ladlrldwl eeptfe Wnke aM 6Mn aru to be owend tir the fully ooopletcd p►eluRs
plaot propooee9 7A based oa lhe deslgn Ilotv ratc 4f the system The desfgn tlow rnte is based on
7
0 Yty lo umn no atto up shortnd pnsent eauge fao111tr oamtructfon u►) an enpneenng ivaluauon af the potentml uses of Uie system. For single femily
Aaeeqr ehatp{ lM torrtt~ cororod Itll t!r fully co.otetoe .yuo■ ror um at5 QO ~den~al uses a value of 300-350 guUans per day rur unit is nommlly used
~ Tlua is not an "uverage" use bul is considLred typical nnd generally cmusidcred
S Tne:e Mm 6oon ao senttoa af propaed leedacapleys tar tho dnfaflele ane or n~ to ovemstimate the actual seamge ~Onernted 'The 900 gallons quotedm the
rdo r¢u14 Oo MA0 on aroundo fs eyrthtyt pLtinod at r!U lt matn caoreA .1tA 8
ieadi° commeat n not a maxtmun Qaw rate Lut is lhL. required size of the septfc tank
h 8aree an alea►4f In wItfi no buttar ata i.a't .nr aojectoe or ao yau iflwra sar a typIcal3-bedroom home
to Euf1A rfRAt np to lho pLnt4 Nat oxporu eanel4er 50D foei e mro aiplnus far
oratea~ of thle t1P
7 Ae1RhEan sra sltw01 caplalnlryl ahont tho rtotee Ra the pop In tM eatetleR
pten~ Ha aa'trn do tAry run? An) deatbl readl~eg nme sll ee~e .uvo to te 83 7 i'or a 3 beJroom liome Spnknne County Nealtli district rcywrem-nts
in~~h` ; iRa~i~ .:~~:cr° a; ~~iroo :ie~ e~~i °l'"Q ~Da1N` mnndntc o 900 gullon seppc tank and 180 fcct of drmnficl~l Bnsed on a d$%ign Lbo Anw of 350 galons per day this yields a loading factor nf 194 gallona per iuat
per day D0E rcquirtments far pactcage trentment sys~tomg mandntc a dtainfield
louding not to exceed 2 0gallons pcr foot per day Basul on thc abova there is
no signiAcant ddlerence in thc loading an tho sml betwecn thc Iwo systems
. ~ s
18 1licro ts no reason why discharge to the packaip tmalment plant ,
dcmnfield would occur ovar any longer pedod thau from sepbt. tanks As
2 noWQ above in commont 71 tlic dr,unlleld requirements iot both systems is
i~ -
8 Ytat en the tnet emulto hon the "2C8' otvy ot ttro Catlounto Mell Junt aoulh 84 npprawmntely equnl
+
of lhe plett .
Q Ylll uw aeet naene •IDN' eate aa um 0lnaser aroe emctrluly he tmludat In
W i1w1 E10T 85 The speciHe toading mquircments nre gfven mLumment No 77 above [P
10, Contrsry to oooent an m~y~~ ~Pbc ~ai i► ~ [uoJect it would not rcquiru the sat
ee~.e oy n~t S.~ceuon ~en~i~ ~ ~iub 160 eeno t Onp,aane4af i br Mdo ~l} M B6 oude of epproxlmately 10 ut-ns for the dtninReld sitc, und would tesuft m the
~n►h mir «e ~oll, ~.onaw~o tt~nnmloHon logooc ot Itaoo .o ud . ~ eata isr wul holdltera ao 1oa1 veovio . !arno oa l. Ros ~Irwdr rx to ~r orortawd ror mlffitian of about 2S to 30 addlhonst residen4ai units to tlic proJect site anJ
eJelnot
their apportenant drmntields
I1 Yhr no eantlon af Um feet tpit Ma0s1 Isrlsetlan he0 to eAnt dan mu of ita
r~Ue duo to aontlnml cWttaro Outaria oan4olmtloa7 Thet um vell lo uyEa 8~
ono fmlf aLle norMeoet ot !M Midilme plst ta the beaet~l At~aetlan ef fla et
tho equlfar 80 Please sec mop nttached to comment No 63 obove
12 poov armr sot to rrtto o!f plao1 dogreelatloq ud, !f oo, a301 doeo St amQUnt toT 88
BucA Itnae alwukl be eanai4end ln A re11d emt cmpclaan ot aeptle taaYn aM tJm
{uciuda piant
t) roa't aa)mm adalt tAoro'o a eoaaonsl pmdfea pro➢ln !a the aoutAreet coraer a9 o ~~he lreatment plant and drabnfield anu is pmpos~d by
ar ente ~.t, ~tn, e~em.at p~e raa .no~e ~ianbar,ooa tro o~tes laor 0~ Ute project develnpor Ma3ntananoe of tlte fuaL►y wauld lw the n9ponsiDility
erory rlnter ~O Of Sp0~I2t10 ~.'OWItY
0 rttn Ja at the pLe eeemt~ lopemaue ea to lmtlata6 eaf podaQ, Mlat .ro
ontlmtea of tacxQeaoO ennoff tta 160 uno rltb ono s hlf IoaO nfnfall or
~ eaor aeltf Yon't dtyrel3i e0tur11y hoema le,~eetlon wells lo tlp aQullai4 99
~ !s Your"am{nrlaana aee noi eoneletent ae qou amatlaas iue ry►lloae aM euCte faat ~ 7'he cnmment ts not clear us to tltspwpost, of the suggcsted buffcr tono
~•~e°~ he"s°'olr, Au Q°'aarl°om or caniia°m oust eo locaileca ,e wo 82 Spoknnc County H~,alpi Distact r~gulutlon prevents the tocu4on of an ublic
aer /n s aanwal eros af eaolbege. Qaod MeaN nM tdab mtesto sa4lryte vo 92 Y p
ero 4700 1n tM anrmtm►1 a!n of t!n 0aat6mta0 e01e iaRa lQulfer !Mt Sele laen well cvithin 150 feet of the dreunQeld sita and the locntion of any pdvate wclt
atslrK erd Wrofate s armter DuUdup af eonWlemnle Plm" Aan't cmptro flora
tn enin ens eo tos.1 nor or sm .qufrer w ya,o.o aa,o on pve iq uvltlun 100 feet of the drainfield Any buffer nqwremont neces9ary for publlc
ie ihm the amtnaela a.oi93 he~lth or saPety ~e~sans will bc adde~ed to
seb4 far the patlmso pLel allaed far raoUnK ot ooetime
to nrerant ormlmdingP It oo, rhnt dIl the lmdfrR ato 60 0o anan la uuo rhon
othen ers sfiut dant if noi, rouldo'l oucA a dnldn prwtQe e lorKar GminHelA 94
asro ar no you r~l tno yro,om oyocos mo b~ Ing oua~aooa u.o ft rlll gatY
Ila.e rou onlr ellnrad aqo deslnlle24 roplaonaent ereat A pdkeRO plant junt aereaa Ambiont noise rendungs were Wken nt severa! loeations adjucent to titc
Da+dloA Ytao MWllaaa (Alote Sutdlvlifop) Qad W rayloeo Ile eatito dral~lald la
about one yoer eat aa Aee no addltlaul epsae nraflaWe It un eecmd anm hlle 95 pcoject sitc 4ne site was Iecated ndjeccnt to the exisNng scivagc trentment
~ eno iote na,o ali booA ao.olama, planl The noise levets at that sit; did not axceed ttte mcammended vnlues for
17 Io enyoqo oonetderlnQ the euouLtlto lopot af tIw RkA doaetty derelopaoot !e Q~ 1C41dC11~ U(t,ag Bxcess(ve no~se is not typlcaUy n problam widi actavatoci
uda Halted arto pt le eaeb propoa~l looMoO et In leWnNop1 Y aludgB sy9tcros
IB YI►at !e No alcornce piaa ►c w naefr nwaa um lVA cmorf or 6ppa eunso SpeeiQc infarmabon on energ+ coasumpdon nnJ YOIUfIie aT8 ri0t
1a au loaal rellet Clro un sap ra11d eaot aatlmtoe far denltelftaalian a! OoW 91
oemaa und dtlat/u3 wtart 1o il toahNwllr taaotOlat YAo wwld mr~ availoble nt the present Ume
98
~A The Cerimonte wel) Is a pdvate well tocdted saulh of the projact site !t
`f was not sampled tn Ute normat cflnrSe of the "208" water quallty monitanng
program It was sampled as part of o spoaal cause ond tffcLt unnlysis done by
the "208" plpj@Ct 9ti1ff. TIIE 1eSUI1S OP 1}l8 f CId A03Iye1B Aff. 9IlOWD 111
Appcnchx F
Yes, Plcm tcfer to Appcndix D induded hcm.tn
1
The enbra project site has bcon anncxed ta the Molel lrngs►tton Uistnat ~
as by acHon tukcn an Demmbcr 20, 1976 All mw fnrtllties requued ta sorve the
~a 3 new proposed project will be pald fot by Uto pro}ect developar Thdre unll be
19 nlere um no ,nnaon or eh yt.pecin r~loserm o,.aca sorea.t+on taaa ror no additional fmancial burden placeJ nn eaasftg DiStdct consumers
Mlailom Palhor tlun nF14 perna011ttr Wa/ laaml la ta aWunw yemtnelan
of tla SQrlr~r~le eoUs Thle polnts al ault* olraely tlW soraro enxoml vutetloro
1n eur eol]s mPOflllla sed aAauld b pu911aW varhottm tn ronr tlrul drsft
Ie t4e pLnt Caofga Eaao4 oa the aa-slN tosN m tlro usual waVne, Renenl 100 ~~e WCu refcrcd ta wu~ not shut down du~ to ~olffarm bacteria
puldeliaeet Alao, tAaro ru no aaLlai of tlr U S Oall Ca~wam+ntfca 3ervlca tooklet
an liqgldeerlryS Lleitattmu !ar Spohne Caunty 9eLle ~leA wrm LMt 3pr1r~b .m 8~ contaminnUOn but becnuse il went dry This hus becn caafirmed by QiL
c.rrt,on oaus n.Y.. poeonel.i rar gronw aar conU,intson Spnkono County liealth Distrlct in a wntten cammunicadon i'rom bU Edwnrd
20 Bntud upoo glmpeoa pam toots toulOn't a poundally Mve wrage eurtaottsg 101 FricJ(0(t, d=(pf
dur1tW ASdA s%turalfon perlode of tlm yarP
21. Ien l 1t tme lhs laaal Na116 Alatzlat tpQraw p►atese planb la "AfgA Aaa+lty" ~O~
dawlop~nG tor unnpoottled •oaooamio" ewean, oot Oonuu af uy suyeriarly !n
temwat or eurfeansapSnl proteetlmT Ydat to prlnry wder SUu? Deptedation is merely thu umortlzation of the capftal co9t uf the
22 Yho Qebnlnon rlut lo w•e..s ...wel..ra rw..on.et.• .eum or srea,.en► 103 88 eqwpment over its usetLl bfe II is Loncidoted in the compansnn af cost
Tm a Rfren Ioale ud ha 1s suaA a detaalmUon u9s4 estimuies of vutious trentment systems
23 90ptfo kNlro ritA dq llma (eoUe¢tlon eysta) fe aue slteYroUra aot mANt10nal
VNs 1oA
if
24 Stue anr Spolurro Cantr Hea1tA eeauLlfons alla prlag aer dminfU1N, Aw ~ ~IO S s
d0 YR 111p1 tQlO olb rlll M ptOtEOtld ffs r~11CU1at ltffflC Q Iu1101rytt 6~ 10~ 89 pokane County lflad wpabltity maps do not mJ~catc nny pon~n
esguLUmn aY no Srperfaue wrfau aar a detdleld areII5 Oll lhe pmject sIte. if somo ponding daes ln fnct oocur it wiU be
25 mU P,enauoo 077a •an-.sia s..age ni•poo.i erogn,.• (R.r 1977) hmLo ap ~Oc can~dend ut the surface wnter dramuge plsin for the proJect
lntsroatiqg eamp~rlson of amted synteu ud aptfa lanlro rolqAtd Aaselly !e ~
N Avac cf eeptte Isnls Ia /lr BI9 author arsn ct Wle oapHson end rht nre your
0N COqRpG lA taDpomm LO Il?
cri 26 Mo sontfen fa Ya Cf8 ot t!u Mrllot Crmdt mtuy dora tar Itm Wilor utllltfes An estimata nf thc mnoPf cannot be made because the camment does not
wDhlaaut h t o~a wrd ~Sio A69 fra~ troi cht• pLt drtergeo ttro at tAe 90 yn teel 9iB !e tM ~ali~ ead a1u und~r table f 1R~ Ale 8adtaatll~h rtg wJunulor ~
~
101 90 moke anY re~~tonee tn proppitntfon rner a specuo lunc penoci The surface
xige emunnaie sn l.te .umor Me.4 ie n.l oo: b.e Ie uxe ror ..,.ml .on►ns wator dralnage plan, bused nn a 10 yeat stotm, will be designeJ such thnt no
27 ra eute an psS 77. 'Vlve of tAe sItu rbpv CrfeHqlS ater aWdaMe here 108
Can re ~flar0 to op~mte rltp eo aaqT untnovrte !n weA ~a s Purl'ace wnter in oxcess of that occudng undet naturol conJltions tiv►U Ieave the
Ooen oxaeaded &re lamtod ln fRo gnrwl rtolnf~ of ttM ~opa~M projext elle • ro ect ~te, Plesise refer to section an Runoff nnd Absorp~on
SC
28 9itrce yau Owetlmi tAo wlldlq at oamo of Ur '208` f1dA uittag do ya olia 109
thes an oppartnelty for roEuttalt
29 canemri to Yom oa..eass ue< <ow c.,m tr.Ae, .n aot .Ppu.at .,.cc4t, There is so reason to anUcipale thnt tvattv divposed ef in the dry weUS on
.vu.enc in up y.~: e, ~ uv.ie .,,e en.l Ho .n~a ee a~.ccea ror 110 site would have a direct and inimedinte path to the groundwater tablc The
tAe saet naut enlfdo af •,OA• da4 and tla lsetde Unt Mre beeae rfstEle
wnter table m the urea of the projeel site is up to 100 feet in depth Wutcr
70 Tds tahle od pLge 82 Aae not 1nc1u" Cantp Nm1lN rell daV Rlven ta thu Caoy dLscitar d subsurfaa wW be sub,ect to ~g~uticunt capillary forces whu.h ~vdl
Cmlutamn oa n1L teild ~r Nldllme Bao Uekd ot avar 4ppo nltnte oad ~
oee aU au cnlr 1S Ieet deep ThU da4 fo aIl fn eAe pefle ncmd iesult tn bath lateral and upwnrd mevement under cartmn snil maisturo
31 W oet eollfon laotoeL daU lncludd an pbe 91 ;artlauLrly boaaum af tho 112 conditions The movemint of water 1n qie swl columo ubove the groungwater
olaur~ of t!r Iladel rell Iv u very r,omplex protxss mvolvlng many factoce
92 The comment is not correet !n its inference that the terms "gnllona"nnd
"cutuc feef" are used interchanpbly m tho pE1S Che terms ure bolli a
measurc of volume and ais- nat used interchnngably
11te ttow m the vicinity of the pmJoot sitc a not compareQ to thal m flic
93 mmn body of Uic nqwfcr an Pagg 19 or anywheru cJsc in the DE1S Spcm6c
refuenoe is made m a number e[ pluces that the pow m lhe vidnity of fiw
i r
project site ls lowor than tlhnt of the main body of llio aqwfar. Pleast rcfer to
Appendix D for furiher specific InFamtation
i
I
Yes, Uio drwnfield dcsign yrowdes for the resUng oP scchons of the
Otninfield. The louding rnte on the bniMa. of the system whcn a secrion iS
32 Tho anly afflwrat mntiamd ln Uu cMrt aa pw{s 9) le !rm "ptio tante Mee resdng wql depCnd upon the amount of drmnlleid bypassed and the efflucnt
abou1-nuwxae otMr "otau ead thOte oontrlbntloaa9 Is !1 th1 wo ru11/ dan't
luwr hw oixh pdekado ptaau srd eaeapools era dlasA3rRlM Eamuee fie Aare oo dsts @ dLwluwp rato (d ft dMnReld
end raputro n0 Leetltyg ot eonl4aflng1
73 Dooe nnr agener aron tnrn Aa auch e!llmat nopl4a Wi!/coaapool PmPoro dloDaeo 114
°t ea°"y0ul The drtunfteid design wtll aUow for substantial mplucement atett for the
yi Althauab tho gamtnl oqultae na fa eAmai to Ea earehrnato eoulee't It Mloo
m noutnA eoucn ►owara newr cmet anlmgo? 1115 draiatlel(. Tlie specifla of the design ate not yet complete nnd nre subjLct to u
35 fa cnnifon taating tlqt SgM 6e 7 .n ~lr ..ml~ "otan or I~si~ ~Perate und speciRe tevtew procedure by the Washington Stute Uepnrl~ent of
pallntenle Yhp oon't ouoh tantlnl Oo ~ „ tan fn thln amitaanntollF oaolttvo ECO1A~
acasT Yo Nre luxi~d ttmt Earelopere eeflne to e21ai /de ISGS to Qo ay~ tentleq in
hlgh valuoo dfeefurRo exosa Tho Alalmal 6mmlty lhey tald tln0 rom maw Oupleus
rhlah. of naaae, ad'l eapero to tDaee gIbeelfo faetallstlau
36 10 5polmao Cwntt RoiM te caal{one to &xapt eush lerae CsralojsenLs aLlh 11' 'fhe en`mulnttve impact of Wgb density tesidantial QuvClapmeni Ls betng
• adallta) unknan ad"lsn 1s{uetst Yo dln aI.roao allaeed daroloinopt eo deaae 96 ~neitlerep by Spokane County in thelr updntd af Ihe Caunty wmptehensive
avor ws aoutfor thnt It um r.1loy taoarpmecee st rwla De the 4te ar Sw l.rseee
elty in tM nnelte eteto „R Plpll„
v
Me juet loarnad 4eotpor pclWie plant hs angtcnUy oppearo0 aroralRnt !n tpe
N Po4ntee Hlll. Su6f,.,o►an viMOUt tEo knMlafto at .pprWa aP mopannlble regu►•1wy
~ eMle* at EaM laal Atd 9tets levelo Ooeacrnotlcn ba egeln praaded apyraal
&g119
V and tdey'm ta31lrW s6anl roqutrlig aaotlmr Ittd dbrtAo-teet aa1 uw twimee ato ''he $
DOkNHI COURt}I ~~Z0$" Orogrnm is developing a waste u+ater
~upl.e tlda aas'o In a mWra1 dnimga Eeefa far ewswtdlaR hllle sad upetr~na
rrm o Pu►, mcu~agement progrnm for the nxeu overlyu~ the aquifee !t is probable tl~at thfr ~
ron
98 Yhp Atd 1M3 Nldllme devolopor e11or haw io Ee eotd aod xtuplad ptlar to ftrol pten wiU call for 3 sewer of some type Ia the Spokane Vulley Lven at the
ncroytsnco af No ey0las br tho Catnt) W$ldssr's 1a vlOletloa of tlWr flepleeDu ptesent Ilme, iha Spoknno County Commissionecs Iwvc devclnped o drolt
za, 1997 oantmett o+nor otatad tho Amto reuld not to wcoplai mrcll BnRlneerla
.nro dolqq M40 To Eale tM a7etoa atlll Mo aat eonalro0 llnl aypsoral ur wastawater progam for tNL. vultey thnt would proriJe for tlle construc4oa of
acaepunce sid fe proeentlr betng apomtad tY en uneadltlal optotoz la rlolsuon nn tnterceptor line atong 5pmgue Avenue wilh connectcr Ilnes rummng to the
pf 0(it'o YAC'0 tAo o{nTslot. eo Mo Eoop t010, 10 llm wan iatnon rn0 Inatalled
tAe ynienat eyotea r►tpout the roqulTed insLllolr'o Pa'sit north and sauth fAnge aieas Eased on the lustorieul trends it is unUkely thaf
39 17aau Flne e eopy af tbe SeptuDer 29, l919 eontrnct het+ean Nldllmo aid tde anY rapla 111C1CA86 !D NLCriItl Il",YOiS wiB OCCU!
Ceuntr Y.oganoor'o ao otAan my tee4 tde tone tAouelves Yo foel ►e edditlarol 66 ~~1
Aonno m Ua eufatlry~ aritoa fo s lorRono oonclveloa m lfnt U ooealdea~od the ~
braak avaa point Eoyoed rAteA fim Qerefoper aannot be heW ees{wmtElo for doRotb
uneal ~ tetnl ot 118 uasu ere aa uw a}rteo, tno aou in lfable cor a vaoalhle A completc onWyds nf the costs of vanous denltaficution IO
17800 par rror ponplW laro eutA m 9hYA e~ iICW 90 48 !t tppwse IrpoooiWe to 122 0 P CCSSC~ ~S
atop nuaA 6lstant dorele~aeat rban ral eetate latereate haro seda sry emsetnr~ 90 lncluded in Appendbx E ht:ican Dcrutnficatlon is taclimcally fawtable Uut vcry
cmnlthaat ln thla lnnLnee ro Mta heud Wa dorelopor's ottotro" Olead Ihnt e~an stve. Tlte cost of an derutrificuhan syst~m woutd ulNmately have to 6e
chote allent Nd oltady imrmkd arot ~10p~000 oM ~eople raro eatrtg lnto A~a y
whoro t4e1 elqht not be eDle to flmh their tofleta borne by the proparty ownars of the subdivlsian, dther througli lughcr lot
40 Yoy etata on pege 99 thet the pclaqe pLnt U ucr o[festlve tn resoring ~AA pflCES OI WwL St314C[ &l1CV~('R Cha(pS,
aollfan taalozSr but yuur dnrl an pego 100 onlr gtvos cblarfrstad affluant data L3
Vlut rould Nse uoeUerlmtad eacal ba? Ompnrod to mptla tael sfilwnt4
41 Vouldn't s eNoelaete4 dfeeMrRe tn a euEeuefeae QnWf1o10 eleo kU1 OM
Eenterie you nnad tar addltloral Lralaent4 IUvoa'L tlm) dtaaaatfnwd uoo o! Um 124 Soil penncabillty designatiana madc by the Soil ConversaGan 5emce are
Aio+a eMoetrnew ror unt .or, ne.ent 99 6Cnetal chutscter17aUons mssia on the basis of sail lype Actual parmea6ility
wlll vary from site to sitc depending on actuul boil concUtious Pcrtncability
tests ate reyuized by Uw Spoksrnne County Neulth Distdct nnd the Wnslungton
Stute tkparhnent of Ecology ue Qmrt of the9r rewew and appmval of the
scwaso trevtmcql syakm
.
100 Thi. plnt design ls not based on auil lype nr soll permeabiUty but on
lond-use coneidLrntiuns 77ie specilic design fnr the sewagc tneatment systum
and druin Qeld wW nqutce a sene,s oF mtes specific pcrmeabdtty tests This
infarmaUan fs not aow avnllublo nor imporMnt in the design of the plnt
~S
ht lea't neFtlc tenM offlwnt rilh nlttaKnp fa lM fom et uamfum atlwU/ qC Sod pemieab~Ity is a factor that wnll be coneidered In the Specift~ and
~rsArle to tRa altnta aafrtq fev en eented eyetx~ Yhl'a tha Hu11h Dlelhct'a ~LJ indapcndent rewew and approva) ef the sewuge eystem by Ilie Spokanc
re•iaan ~ w,o, County Health Dlsinct and the Washtngtan Slate DcpartmLnl of Ecology
01 Daus tlw nuthor seeqntce the ralldSyr of t!n lollalryl dlaot quote tcaD ~
sno IqE~i &a.ou,saKton reyarc eawe.iaaa q eeo eicl at spoti,no w repon on
~CQ
tl~. eanlaslrutfoa of eme loesl rolla~--'7da vertlw2 dlotaria ha eon4sIr+Ury~ U
Fwst co enr ~ncer vale hu no gcat algniflaance fo the ws ot CUe~la1 It ts not tn~e t6at the S okane C~unt Healt6 D~stnct a ka
eonuufunle, aapecWlT whea luqo pinaNUos of flwAtqS ator ~ro tmolred"i ~O~ p y PPtoves N~~
Q~►~o oY the rnlla In tho roport nl CaflaxLetaA Qy ablmlAn ~ep tAal~ Um ples scwagc treatment plun~ far purely economic reasons Indwiduul sepdc tanks
WLls tfl lf7L aMa Ib IlA tNS OOIIW{h t1M OURf4Ce aKI. LO (Q10 Q9J. iRe 23 yOOfD
Isur) tL 1e atlll too hl6A fo clloriQe to be uoad are less expendve than the central collecuon and trcatmcml of s:wage than un
w, nro Fsrai paraar.0n a, Mge iaz enouia oe en*w, co e.U.r„ a .e„tars,o a, ucuvated sludge syatum such as thnt proposed for tlus project lo nddition, the
Cntuw qw"3 erd to wqutrs loetallatlaa at aoptla Ianko fin ehoea dreao !n tla+ ~~1~ quality of the ePfluent Prom die achvated sludgc system is 9uperior in many
5.. M1mas perelopr laa alrudy suud M wautd pnr tw aer►fo tuike tf Ilwr rero (
e.~~tnea aseer ,m tuqu►na respects to that from a sepl3c tank. Please refer to the inPormahon in
45 Hw often m111 etolgo nero to so puspod fram tAU yLnt9 MMt roluus per nrr/ 12A Appendix D for the specttc da1a.
~
uh fe the Cfty egetn &11a1NS CaMy pupare to dump elnUt In Motr eystaa9 71p
InMt I Aeeicl tM) raro not
~ The Woslun ton Slatc De art~ 4l 1M {ege 107 7a ur donltstfloatlan of tbo pLnt fa nat feaHble econm1oa11y
g p ment of ~cola~y ln i!s mdependent r~wew
0 t.a us saro econmlo dnla on rAet tte eattUg othat atae In n{lwDtiM to wM ~~O ~03 and appmval of the pruposed trealment system must moke a dctermiriation as
wt++r drtnluhlo4 to whether or not the proposcd system is the "b"t uvadoWt, und reasonable"
ha fioro te no ayFroprlnW o1te for a 4estotfeld 1n the plat tAo squlfa 1o wly methoJ of treatment for the fU CCt ID lI1Cir llpp ~g
60 fcet OnnmtA the aurface aM eafli mauaulrely pnwaCla In t!w swaar am1 131 p,
roval of the nctivoted slud~a
anturntod ln um Nnter syslem for the fust phase of the proAosed project tiiey have mnJe such a
49 Ylat lo !t proaantlr eaetlqs to opn/o tJw ao-tbltd of th+ planl tlal's alrno determuwdan
tn" Hc+ eany Aoun twr Aay tor Ml64 Ata 1luas aN utoro to tmautv fla tRrough
pI611L9 Cf10P~ COlNImpIIOn RW{110'~T CPOtD" sO Ll+ wxe 112 tw mr •n na@ a4ram•ne .u m e:eeuLet tmt te.trwey m, 133 pltemate sewage treacment system9, including sephc tenks, J!C (hSCU9SCd
51 ffw ehut an qwo 162 elt9u7d Mve apealtle Capulsaa data on op¢Ifla a1taioetlvea 4 m detnil on Pagos 30 tluu 35 of the DEIS in oddtdon ao extensive Ireatment
µroymo0 tor tNe elte &!nn eos{edsans aee uselasa as tMr apyae to Oo rel6Atna " ~
lndlvUtml neGUa tanko aM IndItldml ucoElo valU not oeytfo tanrs ma. lar. 134 of on gte suwage 9ystems ineluding sepdc tanks is induded in Appendix C
consolldalad pnebso tnst~ant plant Mhy fe tlrora no local oasprleon at tedq'a eaete~
~ I nca6aieo llrt wonata amelduntlau ars lsparlnat but I H1L [eel tlmt
una"r nocn guvA .rd weV " ay tio procoacion or envuoamnt .na ehe waro or um ,4~
etlll Invo n0 eUdUetlll~ hlld eCaai4lC Ce~psrla0q 4els 11 ran be sHpulated as a condidon lo tlia approvnl of Ihe se~vage
stale Vks pnaodoneo. Conect4 AM$ ►fter al tAreo raee ef ppr prlnts~d, w J treatmenl system by the Waslungtan State Dept of Ccolop~ Ihat no
ra
" If Utf. aM USIG (pRQ 162) rould npt a11aw {►w 1110llm Afechtxo to a nuth¢m 136 MPemous surfaces shnll be construetetl ovu the draln fleld The dovelaper
ntor, r?p aha14 1t b slland lrtto e soli ewcea eQulfni hu ao intenuon of wnstrucling unpemaus surfaccs over a dram ficld and II
y+ Oanlt nfatnsnts an pago 162 Sn pumaph uMer Tfple 2 eoefllet r1th eapelean ca
n be mude u condLUon of the plut appravnl
4a4 fa elart on pnge 311T
Thf. apeclflc pubucnfion referred to wns not utdized tn prcparntion of the
~O6 DC1S A lurgc, number of pubucations ewst on this subject, many with
contlicdng viaw points In the ptcpurotion nf the DCIS a number of
publicntions expmssing a broad spectrum of news were considered Somc suti►
ns thosc by Laalc (see footnoto 8 page 172) stmngiy favor the use of septic
lanka
~
0 0 0 0
Tho mferentc to Ibis research n noted
l~l
10$ Complete reading of the test on pagc 17 will mWcmG; tlwt lt is cansulurad
FW 6 probabie thnt threc of tlie violabona refeued to were the "ult of annlyt,cai
y! Yaur waor advantaRp IIn1o0 on pago 164 uo quoallawdla claeo y* coally Anvo error or Improper sampLng Thc othet two violdlions wcm-of the Recandary
stand~rd tvhich does not
no eau la apo~ ea~oer or errswa~ or ~taung eree~ .i~ae om nrunm eo uon t9p pose o health problem but hns been establtshed
eoeply wlth R8Y 90 48 I69 otd 162 sml pnt ouOD 4yotaao oA flnote plaCtnrgn Pen~lta ~JO for aesthedc pucposcs Mlll the amr of hldllase oppll Oo Gm !or sucA a penlt m eapulnoA7
56 I watwnA1nR tour nrAlelt% rltA tlu" etosonta Ttio ern popo» 1 pmrnrad 139
(a s~rmkahop 1n 19i3 uq ths Mber tro ren pnnantod to lhe Coue►r Cmalenloaen
nt . sept N, ts►ri nwarins on 111auain, ,09 Please refer to commcnt 70
57 1 oe nqun4tlM latonallan an pentte tqulrod tor etlohlona of thln ayotm
and aqsaal of plsca Aleo, rlet eppmle are sveilable srd Aow aorW daya le 1~o Complate wcll data for u number of wells nunr the project ~te ara
ft1oT Stneo I leal the d1S lo tatallv tasdoqirto to dNo, an oN +~Intetrnttra ~
a110
pptsla evatla6le Lllar 6!m ilml BI91 If not$ ~e tA t~ »e~ae~ included in Ap{endix D The ceador is fmc to make thetr own mtcrprotuhon
omn t+.w mrtm rar n»na? oP this dnto. The DFIS was nnBweJ by the "208" progmn and tltcy liavi. not
56 Plmll ronld 1lko Lo Quote e ee0t10A af tbQ SYP4 Culdellnes YAC I97•10-360 1)) qurshonca thc stntem6ni
"il eEanldeDnrod tAe► pTOpmala doalgaeA to fepraa lAa omlroement (eueh
aa aaraaa treateonl plante oc pollutlon eaa6eol npuiraronu) my aloo Inre ndruroe
onvlraoantal topaota ~Aa pueotfin et clm tlumAald dctecatmUon farol fo not rfuvmr e~~ The data on page 82 is the averaagee of a mimber uf samplac taken ovar the
the TpaoftoSal eopoota of a propooal autrelqA ftn eQvnroo leyeotn, Eut rethor if Mo (
propaml imolron wl e1Rnl!laant cQroreo !a{ooto npon 11p Qinllly of tne omtramnnt g)voa pedods Completc datg on theso tvclls Is mcluded ln Appendhx A and A
lf fi daoa, en Bt3 1e ropulrod tlo toel of Irlenae oAAll bo sppiled et the tAseepald
doWrnlmtfan loval ' TAio BfS sAauld'vo Doon dono prfar to wqy Aorolopoeat and !t'a
•pporont lfwn aro ottll muaeoue urmmreeod Quuolloao
~ t In the uiterest of prepaang tho conaso documant, coniptete ~sults of
~ I Z b.~cterological tasts, hava not been included 1n the DL[S These results uce laige
3°°~y~ ~ in number and arc includrd in the 81es eP tiie Waaldqgton Smtc Dcpartmont of
go*kano, Y4 9V06 Sodal Hea11h Services and the 5pokane County Henllh Distdct Thay are
pubArinfonnadon ana may be revle%Ged'at uny time'No attempt was mude to
- tubulnta iws dab os part of thn reporl becavse of the vast majoiity of aiuilyses
repect tlte snnltary condltions of tlw weUs anJ generaUy nre not indlCUbre uf
the butenoloetcal quaHty of the aqutfer As noted fn cammop167 the A1ode1
weU was not clased due to high collform bnatcda levels
113 The torm "sepdc tank ciYluent" should rend wwage trcatment system
eMuent The m[ormuhon on p¢ckap treatment plant efQueuta is equal lo or
bctter th3n that avmlable on sepUc tank a[fluents
~14 Thcre is no pmvLdnn for rcporpng such data
The Hydrnlogy in the nreu of the pTOject site 1s very complcx Pieace rcfvr
115 to Appcndluc D fot maro spectfic infcrmation
116 Manitorinng wells can iw made manditory by bcug raqwrcd as a condttion
of the plnt.
+ _ r
@ Ttus comment is not relevent to the EIS and sliould be refemd to tbc
Spokane Caunly Plunnwg Department,
~ pG"i-r; ~,tti U7 e41 FL1% it : nsezsrs o, ueth, + Mzwrra i cu-17RUL Q Hlgli denstty devclopmcnt u absolutcly ijecossary if the developmLnt nf n
,tY ;rG1sD C24YA 19&7 ~3 antrnl collectian and traatmcnt of wll~ setiva e is to be ecunamiwll
t~a %i 2~ttir~rr Nt~~t~ 7 sI~ Y S Y
I e,n,►~~~~~ at- 3L3d ►n c" 1950 fcssible It wdl probably be a recommendation of the "208" program thot
y Iftiinily AnN»ignod %::d tq-julte h-3vq am+ar eoasuapttan
J I. j t ru-jprj in u-t;lrtuarjrg uPrtctorcp w![h oWnd;aitd p1enU. u14e• anntlnuwa high dcruty dcvclopment be allowed m the vallty ln nrdcr to avppnrl a valley
r ,i~r-st sewer syslem
I 1 ~i4i utau c~rnlapxsnt (a• evdn 25, lf honea aaf uxPnolr0) lo ]otja ereugtl
to ut;ar e04RGAIaallq I rseka-ie lre9tryani pla-it
y L I iell.l6 a-:L.i! t/*+a nua. !a alnttad nroPullp e quiro n:+ular fevedstlaa
nif rtln aronea 9.u5L lv ncreurtnd an9 fenced
f, fn n-in„i ss_- vul-intaDld to Auca lokl"a (aharp Inrressn tn C144 nplotnb) 19 Tlus comment ~s nat relevunt to the E1S
.nt loeluntesl
6jlitrh e+iaa n l~ra ~uirtlty dlaehu;a af solldi 3n t!u utilm
d-tUviceo rqn h-ava lIt- 09479 RMIUIt
'F f r. lLla c i c p trucautlum aqalttsl plrnt uF+e o ems I'insl mrid filLvGlan,
JuplkEltlaa nf ltal nryul4=nnt arud kilfer atclp d 940 r_et ~~O
~I A ilvo3u vnluj aham cup6te Wnsn ite n ta..il lu..a T1us comment is not nlL~nt to the E1S
q I ii tI +vzi ~ ln^+e a iniC!¢il ncsendltvto when ~v5~ia tnaa hzn roc dovelc,~t
11 ~ pr~al » r.zt-r nl~a t., 1nSlayarta~blu ln 0-c1hr to esuol:3~.u all ~szs;e pLsn;a
lnto j ilG ;la stratum ln ho futuro
r.Hc.aM pacI 3 cau sNAcs TV.ATr r Jy-jr"z° The maintenanct, and operatian agreement betwcen the developer and
1,r °~rc~~~c ~s~cccti~av e~ NGu~ au~c~~ ~~..au., t~~rvr
1 Pe tr 'ie-ro.ablu tu MA 1rcJ VA n caamunitr a73tas -ust adplr uBth oll utato aed SPokane CounlY Is a mutter of Pu611c tecorJ nnd mny be abtalned by
liual 1in -inS 7Cqulil!1Cno aRd Oo 4(iplOVC1 47 th3 h•a16h antharlites Fenanenc @
mint eontncUng the County EngutLers office It Is noi rcleveni to the L~lS and Is not
~a~nse are4 contianan ua~ ar.i c~nttan nu~t alao En asaacad
+ d► lhy 12 utaO huAlth dapto vfoltcd, ln the at"y, all .a-o oi S9o oplnlon tiut i11C1UdCd l18{E;ltl
IJ» opatt.tan and ualn.ananea nf cc=mvrti r cnratnyo c"ton atn nom a3tlofu oy
N uh+n unisr the control of ooze Qaernmantol agartcy 7No ISrtd of qavatman.al
V or-intcnltwn lm nar.d.+tory tn 9 at ttm 12 3.nl03 vlatted
O I?4-9 i ost uf ioptle mnx oystrzs v%rtea froa ataut $lgfl to b700 tnz hause
4~t-it dva>>i4e oena4v eLih111.atlan "'do (La;cara) In Vic U 5 a-e e=34, nad o-i Titc approval oP an expanslon o[ the emsWig sewagc tratment plant is
tit. Lx.,l_ c! 3D co 60 houun pnr nete uf pant audaee nreA 1 f10~ D TO onc conclusioa and is the for the bon of this EIS
5 IF)~aleri-a nhm,14 main ~ cmnultln4 -in1Wiv r~ co cuP~r c~ " ~ pu~ose pnpnrn
UcAo1r11 i~1vICa nucauoary fo- th.+ praJsct 5~1~ It3iy- pra~ns uu. ++u1 Any proposed seuro~e tr~otment syetom must und~rgo an Independent revlew
eon'rent the nn;tnuer faeludo roUting thn pmatWo rzmuth r►b of bh3 p`oJ~et
a: the nto nt wrdch the hevno will b ao1S to tne duuh(n o° lhb aawr-14o Cacllltlaa and approval of tlic Woshington State Department of Ecolop+
ju at,i tc wiu ru„_tton antiorocearttr ona ManA►;.allr tt cjeh 3w,{a of the
„tulvicion du"top"nc
!a TiR "d hy.+ lw aan fasri of teuot deed w`tem the oyatan Sn ta lu cArted kq w prlrtW
rnrp6ryclam •ar irutlt TL dIGO I13a Gg06I31 DrOYIGIORO for Uro onu.o- a° n n-opo-cy
d,n n' > >nul etlon AcUvated sludg@ systems tite more ef7ecbaa m coliform bacteria removnl
1 _ 11 L o;, r~k 0 1 1 ►1,1o-AT-D MIM 4wlw,AL P:ucr (ra13 JQ ~ 23 because of the bericr cantrol of orgaruc salids The spectqc removal eflecfency
, M;_.) ri- i~ aLM a J r#Z't.'Or P= v -!s nunIMM) will vary from eystem to system dopending upon the conceutcnuon in thc
i aT
I f rallnli ivy p+n.i c i~t sa doae tv a 1 Nmllnt"-t pl,n~ -t? w denn umar nuper- iIICOAIjII$ Na.4tC Wa1CI a11d U1C IIUtUlC 0f U1B 481VAgC
llainred u-i in^e- vlotom o' m enitnfier
~ Am i PitA1c r4a anttly 2 Au itrSlW~us1 or e3-"ra lon ca/ p6o
► n r ittlni haacuig ill.mman! 'Sjr-o raltlplo hooruia nlla&I
i, "I ans n 11 K ir Innplla it►.lonz h I it nn., r31. w-lYs ic riititeq st's lo•S
tll nr +Lta pl ino o Lo nL3.tt tev y+rolln pl3ra -o to stzta --a-lea A cidannuled discharge to u subsurfna drvnfield, WIthOUt fl dCChl071DJ•
5
rn- i, Hon unit operobon, will lull the buctenu in the Jraia fleld and rasull [n
tlt -+a tr-in.> >Ri .aa ricotl 4t u i intlen ne !,i lr, a- rc-o-~-kaeair{
11"Y10' ultimate drnin P~ald fwbm There ara meihods of dismfecbng without the use
~ ~^sr~if o• -1 tit-a'-a,tv 1~g c»3a -it u• t1 it-u -ytl r,-*u'-.! fr-
-,1, Ganr:~,T ,rl 1~i.. of lhe chladne Ocane For instance has been used effecuvely in soma
I I .r ll ~ ca~v zra nn"s -*1 In c..ate 1wuion Iitit h-il i a•1 ntntr irt-,s IJ15t3Bab0118
Shr-irt r t-r a1li1 i far rn;i -a
As discussed on pages 991hru 101, nitrogen m pio form of ommonia wW
~~5 bc r~pidly owdized lo mtrote by aerobic soil bact~ria Thv henlth c~sMct
comments to t}re DCIS are Includcd tterem They can bt, cnntacted for thelr
spoclfic posibon on thts paint
~ No comment cnn be mnde on the quotc without reading the full context 11~ from which it wns tF►!lcen.5inee the quoatlon u not refercnced, such an ~
fnves4getion is not possible ~
I ~.3 tl./,,LA*~~ !✓~I~w/ ~~wl•~-~'r. .nr ~7r; o+:,la;cn ►-%iM r[i"1 Tho wntct has muread the tinal pnragraph on puge lOZ Tito comments
~Z~ therem apP1y eyually to packa~ Ic+~atment plant draln flelc~ as well as sephc
1~o icr "afnt~% r~~~rr iu~~t utjr tmik drnin flolds
~l~ntv P-) ,-%1 n4hrdl al - iCtto`ltU J fta91p111t1 piLf OSI-,:s:lO,%
lu-IyW -tno 1 mad! rtid o=!2 poa-aFrxe~on
j-6 oa i ud! ,.a..lcsr. lo nor_ dnin•fuld, pno- ap~-I to-I Pum 1!1 reuirements from, t1t0 rosed s ste
m ~wll v wlth londm
t~ J 11 - a~ s4Aii , P S 9 p Po Y nry g
I ~~lln1 S;n - Tur .hill, .,.r y ~09130+ dua Co Clus.ua5l~i, pait o ~C IIOt ~IIIOWO U~ uU$ ~IItIC.
az r Ucll ltlo - 1 I.11JC'o-y .2 a ii: ss Pi &ozInvl n--a I an Tha use of the Clty of Spokane Treutment Plant for sludge disposal is
' -'•cui - 4osl,i I io• °SJ {urwa .-il no+ Ivw air j40 conrw_1u! 1 /Q
suggcsted us a midpllns measuro. Please refer to Appendix D'Che
-,.~r 7 ra- ~•~a,pA u~ otUl_iuiul l~al
lli e~-s i...~aan !il ai nvrlAf ~a• !:.~r»
Departmenl of Ecology hus Jefcrmmrd thot lhere nre nppropnate locaUans on
,c . .e , t I otla,o L%,am - ScIGe trouhl, ula, (1uoWi.i,iqn cf atWl~t j,~C ila ~c, the pmject sita for clcmnficl~s and !ws opproved thc dratnfleid for the exlsNng
u a_nt lla-ta - de-ia eeauoU ukth apt=Llun ' trcatment plunL Any upprovul nf expunsion oP the 4.xlsting systc,m unll rcquue
Lt4=n - 3u ufy pn a u-tln ytuncti un independcnt D0E review tnclucUng the adequacy oP Ihe draln field la.ation
ta^L1r C1uD a%-A - Cuviutil:y uii l. t,%nR al.h eawVa aur'aatnt
v f s i.I}117 11 lI 1.1Ka.l~ - ftiU A,N`]CL011 130 p►ease cefer to Appendix E
['i ~ I - Ji zi2 ^11 1-11 Lp danlth Diu. Goar ooho etlla i+sri vIx i 11'
inr +annwmt_to W Ce341-a1 cu lssr.lle 111 rhegu tn 4a414 r
sill" ~n ~~l ~r ~~s- quanttctaa o! nara c aaw la ~ Q7 for n 'Che dtmnliDepeld si on rtment the of Ecology tws determ~ned lhot there ace adequate areas
~
Ito n.-3t~a Z.rnt o: a~^ecnLn~ mM ul» uin aee;2e~~r1 Project eite,
I'l-sas, usnt L1::Ll4D 4 1euto un3 L. J.s:trJ ue!y -%•_e inntla
I1~U~ '1YOL11NJ ]r'] is ellaM - I Too e.stl.1 (1uda-2431gaail c^ o'e-uil ~ 132 This informuuon is not ptesently uvoUable
t Urtqsull.'!wt nFuniaes
~ Cinor drita't iurt olap om af r:3ro- o;.,+n._o-%
"""'3' p-''b1 -A0 133 Tlie comment piga an pa~ 122 nfecs lo the rtew and cxpanded system
5{!n I.n~
t~-u1 ~ part '+nn r aoil a^nl ila not the exuttng system
134 A camparlson uf the cosls of vunous sewuge treutment systems is
included m the UEIS on pagc 33
135 Plcaso refcc to commcnt 98 and Appendix E.
Tho stakament on page 162 lndlcates that septic tank eftluent are not
136 suiWble Por cUscharga tn sudnce wuters. Achwted sludbe syetems hawever
generapy provide on efIluent thnt b suitnblc far Jiscluuirgc in1o sur[au; watus
The stutemenis tegacding effluent quoLty refet to on s(te aerobic imits
13~ and aot sepbc tanks Data on aeorbtc unils ls not mciuded in tlte Toble on
page 31. 71te wnter hes appuccnUy misteud tbe paragrarli
V"n" ,TI III ( f' lU7L:1 - t01,s 11 SOC. Sal'tY itTd 1`.AiA Ta S: n4. D 1MAL
~utn►cte, 5unL e1977 T6e dewloper wtll comply with aU regulotury requmments of DQC as
eo well as those oP nay othcr agency witlt jurisdlction
3pAana Cou-sty Cae*xtL..ta+rn
At
dmn Ila lcan
1) Irr k-rlln ta "aU „on.L&rItluh Svt'¢4. v9a , qcir-l of Spa+mmr Luniy hiL. oorlain Noted
1Sr1 9na "1r1+-. Ior dc4lntfuld d1a;nua1 imP or tAc ralluy Plaac hiu lh^ V
0 1tL yru lt a ln th-At it 15 taa r,c-•c+§le ar,t paosentu Jlktlc or na p-uccetton
n mir p leole.,,, e01e-n4irte aqut ar
,I) ^fIe veetlcal JluWnca lraot Ganexntri.Sn,; palrl to tne wAtar tsbto hii no This camment is not relevent te the ElS For spt.cific iaformatlan on
s ri at ,Sqntfleanco ln thu e3,o of a'tc'il=il eonWnLu~4. 89FltCt~lly 4jC1{ IafiTC ,40 ~11~0 meats lhe wtiter should contact Ihe ~gency with jurtsc~c•
qA intltluc nr flu..htn5 uiter ere 1rrvoltiaA '(ksrnlt-.sston 9opoKt, UeC 64) tC~ ry re~
3) rup A6tll-enu 1 trutanee9 0, uoll CoaM-%'axllun rero feax :.it:1 no, biatmri-I don Wlth rcg►rd ta appeal proccdures and potentiul UUption, thc wrlter
l~lC 1pS~CUtU1ettorne ~S O~CC
w, 11 (11~. "reaC 'uetlurn 1~ }Ullyn-d) aupgoscdly liul 170 f+.el af pra a:tloi should contact het atturney Of p ~ ~
f r n 1l~ uoacct o' conti-iialticn O"ze palluld, ov,.n poplo tuo nilus na-h 1n
rz in Atrai cdaploieri of tt tic.' o' t»'+elr Lit+Pr ldfoer Prentwood a vnll va3
0 n ccnt-vifr-iud ty chiorlduc iha a711a trare2esl rortlaally to Uta w nr ta6L
u ~ Un ouuUt ~,QOa tOL< <o cnS wPl> ;t se thn YaSser rull is ln an arei o" ~S EIS has bcen pr~par~d not to ~usUfy paot nctiona but to prond~
I i iitur a(ulfur flati tl In oreo eqaln u.a.lu tut, lho tilllpsM unll, rwlciJL llw T
N ir 4 e' n+1o-'30i t- rttlt umit da4n iis> w.lla vory coatantimteL 23 rur: cr,,o informadon on which tn base fututti depsions
V h) a-cL11r,1 iv.ontiry Piaia o?lunt-i t' a rot rworna choale_1a Thuv arc calp
N c11t ! P1i, 9 ri pllt VinW A1 chir-lm to a c?r,~o dralnflald e¢l, ulncc tli9 LuV_ oC
c,ia 1 ri ru i i l0 1-..u Vwtj 61.,cki*„ 7enntn, na lr,-, ir3 i, kulr, dera ns
q+r tily ar1 qut l{t5 0° a"'tuun4 'rcti tnn,ta Iant., Jn lTu^aCeru Isvo no fie 1
4c i~k N,o1 Lu L upI 9•t eueh ph 6^ w %n inpr0venant Owi r IM1v1('u11:Q-) c
A'it i hrrc lLn unAln ta il#J any PntrlLla dntn mt roluv al dls.ne,,u St+
iu1 Alu9 1d Ar, is ef wnAcillon Sn e,tt .`^lY F9ranidlo eo11 1 Inv.. hna-S thae
F tr7R., n" aw.,l woUa luve tn-r3i up -r-o ht,li sdtraLu eaunt,. thus ruoporttn•
ri aantinUon Utit cootnaln tion u'' ao wi!_r;routul ~_atox eupplp So en lnaidluu.
lldi I o,l o cFt ltilln l.. eor roli'em tuterl.. tat it nnpr,ro tw OrvAc.,
tiit ts 11i° 1u tti~ ct1il1tl%= u`foct n t} Ic-~lfl wh1ch do nut dli..l}it, 1{ii ii i
fli ~-ic nn it-inlar.li 1'0- raiAda-t ?r 11th a12 lk° naLlanal rt-Ne"la o-i
Ewueilan o' cut`ue.. tij um. lh rEi tn a eE ir P,,o a4s to lha( b-Lo dai'i ►ant to
I h6 Icd L, 4- ani iP1 to Mrsh r e to i-iin~luldz flwq ~ill aot luvo ta pt .
i itIt ur du nf u I1r^ ard, nn e vc., ! no oat- ►[li hti%o Lhu rwri dits nqedn7
t~ i to rilna tln) rrtcnl ot- eie dl6pzal p^o9ltm5 E'roa o" llitll 'tA1Cidt 1, M3
I!,o Nit t 1 ty ot -r lu.t, `o- t,l a nr 5 ns T 9-i, lak+i -iliile tt+u Caun6y rwlafra as U e
-.t ]1 o ui c+ltt J Yle Pajiyivqita.1= a tho City a problt m Dy u'+1rt tru :lty
ti t nt ul ~nt i drc-ii ror , o o'' l% i 111Sau af nl'lan, a' tlu., pmW!
Ir i lYy ''s ° t ti ill Ll Ur l:mt ir" of3ti Fao1 , 'Jjr rrac [s dur rj at slrita-!e
1G +t1rr ill aou I 6nu CamLy wh,•+. it uzr , lo Lu ~ur°4c¢ du..lltr any +.f"n-tr
~u r~ Il it Pointp ; 'o,nO I t' mr-d r rtp ia oJ,/ h,il zotian In., ltLud
i,l iinrv i nelo , ai it Pu U ay aL t 1t^ m-Pon .111t1e t4 F-orf U
I nnti ell-Iy 1 wl Itc t! Cltr llnlt• lh: inllty lt+earga it 1t c.ill
1 I ,l 6it itli ] ir Mty In ilv ti 4 nri yal 16 L,oilur+ % dru rlde
11 th ~ yk u nr tAu %-ick u` thu Clt, l' th Gity chssl' a0 fa* ut_-u-hcc
In i 1 m ~11 ~~r ~tn~l_ i 41 u+ir°
~ y
. . ~ ~ • • • ~ • • •
• ~r • e ~ ~ • • • • •
7
ir pl I fn- Uu u- h Slnr 0-tc4e, llnn' ln I-ii wnt Uhrw,gh Cwr t:anetc-l
ti ° rI 4 4114n'l 1 i! iren r to.ir f^r ?Od till s+ n mst,lr A Sn 0 1 Ilar
I n i q fr- " ririr ^ly pU*j3i CJ aii-a 1 dqq't nu+1 1o toll rWi ui►it
E19 1r' th proir td 171I,P~3 -,r4 111-47t sokw+~ tlly upln thl dnn.alr
R it al al ii i F::% hi. trtv+v A j) to p'ksklnl. on &7ory frctl pluAln rd V&
- 1m Ib oI uc nll Knoj lrat'+ r. lh-v tlp ol tfu 10atnr- },sny wnjI4
Sl, 1t1t tA ltlat er eilh r i ~ti„Iw e noe strr1 tjNu•
ii t1 I ! n" lsulu y tu►u.a tn nL.i w 1e: willateJ re2,WsqlEl1.Ll.. untur
'Ct+t 19 T+rn!l. 1Ghn rnqulo -uvn• 1 "-mhi aro nie rdsn, thi lily,,,tl aen-
~11 iu,n P. udllto iirtt l0 4ttn hrvo r.rrlrad no Coply Pffe ga 40 I10 GWtes.
II 61in., w1 •F..clflcitlorok for th-i ear:tlruettan oC i+ir asvan,e ayste+u
a s t u t ir,n6 uc dleFr olI plint oz AfMd U14 P[OpOaCO patI1QI OS
t a i- ul r,tt9nn ani a1111t ninri o' ..okf4 "sell'ty ar fatLllU" ahsll U au4-
tc i 1 ln %t4 I,a aparovcd qy th- t~itrato~, b-i'ora ocm Lructlum llcareo• rir
i 1ii (_iar.itA auppli¢1) 1n ufldttlcn PC1 g~0 Fl lti! ctstr,a. Anp oounly or
~ q~un1el,.al (,r pubila ouiprrrIlon o;arallr^ o• pcopmang lo aperato o ecuen4;o ~
, Lni, lnrlu9ie> >ny ry .u;3 wbich eall+.etc anly dawa6le aaaaraju, unlett rltoculU
lo lh( dl -i %I ol ux~t^ vA,rslsl tnle aa mtan at 6h4 atnto chil] kr-O-Iftiim a
c riI i 1'ra tfi d, tkrtaijat oi coulo; y t')''ore so dlajas.ln,, of autn oxtortul-% "
U [h4-7 ic rlplilit.6
!t) ih r_ i i nijnr dl -i -ie7)n! 1a1uovi itiv lwo ufnla r,kinrlc3 t1Cr' nKd 0149
a_ lu . i o I. tr. s37.lGlc fo^ ciiya.-1n ~ I..1 ra plski,4.y pl!"Ilw 11PL I ldlla-n
i I tu t., or lj;r3 mlr laln- ln%t IC P= 3 Rq VaL 1 vL- r
.U.l d Co apply I.o
N i-^ +nfrii pi-int e thi- c-%^n4tj1t a1 hi nn o5vlauly nut do n j4b wlth nnly
V r-i,li, ui Iil ai ff lo eorLr all p' , lern iiinhin Wi nnA hfr, r ron,lbll-
1 1 ra il_lnhtn u-ILs .uppl9o 6 cis i rt,ali+R o• th. C3'tni1.►o1rs ti.cttai o°
d q, (o (I ur et! ( i i ln Lnyr;- `t Int r1nt3t4on Gur t lvlnti IY,4. ,trlr-trp
I ~ i IL 111y f4'r nui evvln (ll'i Ph4o rn tI-i rn•o]ioTf
nul r-r t ir l tw mti1 dl i,r_ : 7l l,lti L*% l!ro 6c.nty Er ltworo aaA thu
iiI+M lII i PICt ririiSn dri4n`irtd ot t n rc-ilth 111IILCICI ri„tiIALlOti9 Ollpii
t 4- lh i a7I1 1e ln ti il tlis+ ZoantY a- ir E r ulll ncc•p far n p It 1a oLvla.i.
41i t ti poi IL'l~Ly f_ ra fruo+1•,d fo- ipp°arAl o' puta-s plrnt, ttut li. u111
jor n a-i)nr 4#fu-t u i(}t )%CL 0' c 7aii corcnrr I te ctr31` hh n 11 inl roi
I ( o i €in pravi„= ia ulth dw03 nn tria o-ckn3 A)Slel. tt-n tamiy 1a pre-ieatly
ri«n'n, an lhu it 4t 11 a itd o-ut li u;1 It uT ~it. amJ ycC, lh»r wm plannin3 lo
r r t1us-c nn•i lh -i ycir 4Icu, uo t(to,ile ara unaim-e o• thn !'acL tTiat Llsa
1.4 ~ c is R Ir 1+ IiZ mtt^ r c+•MRz-nS o r-fn "n thi eroaod ArcAtrr! lr-i nri4tu
11 th /Lt, pr <uutly i tlntilriln 1ML !n eoturn fb.. ol`f1,dtN1 1n CqulNn9l
t c u laiia 1y tln 'odnly »njlUd-w nnq' iu litra te aticl ep oNao iyalul,
r n In th-ni°b tou+ ih da-sr ulfh ill kl-t7 p• IiICAun ut 149es. do cvun Muu
i., iYl ffl+f ol. oq ulilcl~Lth uci n_ lLrr or nlli,, tiaPiw ,ilant,~ oml ]npnmi nl a
1 tu th ir cu tu irt tvi: '4,j I ' n i1 lryi•! ii elin,-r to !9isn th y n»e plckln,
u lh;- lo, ulth Lh ir ltatrle 1 r lr. YuA nlca {al Vkuri ln Uit pa ltlun o°
1 'I n la n-,111 n,1l2nt, utlbaI t'ir c,,,-Mibr to Ao 0o ir thc Caenly Fnjliu:ra
~ i! u n In uG eloo i^ielll.y ti '.-t t eVj•OjP t!, plinE Tldo npar up tFo
S I2111Lq th-il Jitt rl ht tucnp n pl l L 1!t!i L{IJ I LJILII DIf I.YYfI a hli,iaz
lai Ir dq 1~n ni.l 411trrr`orL. ciuarani9 t'ulr rad tn+ wh^r Lki. Arnlnftald htiu to to
I P~ i v..- 1'I cVsanUim tt ialns n lo .y; lh y crmClnuL lo act^_pl plenU wlltqr th.+ti
i Irlr (!u i lu lhi CuuCy rn 1n.H*a Por ap,nUan'
~
jc 3
11 D iv rau' iraunA rra planl aro iclually ea1L.A nlnl-nr',m erd chUJrun
r m (rtrasr - d to }lny in l.ye on1y u _)n rfacu In e aihllrinlen 91wra In p
( I n11, ! iItt irltvi nul anL, pzojlei 1n Lho ovenl Utat a ehl1J uould t- !n-
Int 1 u drni i 1 In oau u thae racrl4tic {ncwtblo grutua or oeropnlnj n"
rui A -11111 1t-i )SnlA11Ly 1s not eloar r,ln_L Uiu Caiely mnnac asatu.,lly &.in ah7
I t uis- !ii i 11 In no 6~~p-~h9vivo "aeu r 1'lne 71te f ifoilaov plant ulll A3 fcncci
u 1rnn* ~ Iivio, m a-ir clup;o, I jmitlej chllUran atlrietail 17 cAuinln3 uitcr arr1 Gu
! I at rLl uv aru dlosu ti1a, n n`-int la-per thin tiny i,uitoin„ POOIa u1cf, 10
t f, l of p rcl ~o f.r u, %u t.ln luxr,/ and Esv4. mtiy hid rorYh ttuctin lnio
t~ - 1,u n ul jnnpt unplu ;eJ 1o. d lli.: lo knoo !f nucA tn..tlt.1lc,tlonu urc I v n
1 u ibl~~
13) Tlu w S., nu c)urcut wu;w13l6itliy ur etnlrall:.ed d2tn on auch operxtlann
nri, nlnra nrmILs anl tLjtln, nen ntl, lt le Im¢mslDle to oat,e un/ klnd oF
nttnnal doclatans •a,,atdin; lhulr ufff~ae7 To tnAo the pnillon thai lurlqS a
t nt h ction -y.;tt.i la t!w !,rourwl auprca.'o5 all otlmr concorna 15 lrrtmpon.,(ble
7isucn ntu uUNr marc lnaazlanl ematderaltau than tho dubtoua cmnu lhai you
u9,ld ut cs-ie futum AaLo Eo a:le to ptne up cane of thnao epatema 7hn len;T-rnv_-e
ra ia at nuarrnin 1lI1 clatla~a Ar9 nx¢oaslvn cner,y urt: could orl++elr,h tAG
rrlnilri-i tvrn~f9tc Got Eh3 lv:iat af our concornn ahald tn--Arm un crcarinj a
Cr ktuc Polt riGlal po: continlvtlcn br cnn:olttlalln; thn uantcs frolll avLr ACO hmea
In or naill ir tt 7yro allathel daln Iroa a Daok !n t!e Ceunlr ]tlirarp rullcA,
1) 1 n rl+nnln As,psctn o' lbtor tollulion ranLrol" V/ 9lguni Crava tnlpa cut
tl j Uxt u plupl dUcraz lnta pamp--ellvi
N
V 1 j) Tl~zr 1- n n1or Vtr!jUluari In tht, pin-nloj proeess rleht haro al tiut lonl
4~b 1r iuh n 1 roJnc ❑aiiflnttten to eam3ltienn au1 to u flrul pL1G ain 1n fntllLts,d
%rii rtfi tsa t 1 xith nn opn,Tl n?ty for ad]2eLnt pru`arty ounciro lo to SriorrstJ
1 il in 1nA 111iU an Ihil eOJ a luvu 3" uAirC^rlY n-Iefv, divtluMloq o_°[oc'
r u~Ntton te va7iv l1uiponab illltr 1r nat elztir Aii ro'ra tuon udrlx, hj
pi, ~-i ; upln tw6 nnll .^UPWR7 prlo- to njptovil Ic cA=anplaLo ,lt le-vit e-a-
th Fd af ll lruJirtc Po tn thir 4ap on1 r) aru lold lhil na 010 han tUa aulho^ltr
ta In iriy, bin° uainil 1t h Zr, gtio lwi,4.r iuivo nnout,,h to iksai" rLj;ulriory
I rt li ui 11011) 6hLlr Jav In r et, ur'rc Iaco" eynlral tn thn oxlrenu
tf ) Ji Jn ➢ a iii t 1 rL 11 t o' aYl Ktc i„s P1nnCn nnd 2u-otu+-i in U;a4naa Cwnt.?
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3 Uh-% d9c:& dre tho Countr Imve to rupoae! Lhe iaatslla:iov o' oucb o Ql ;n. ea
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vuluv "
11 l+hit ~rc~naGo alr tha I70,000 I;f4 utll ta unxenwcd c}raafcale rivch no nltrto,n'
y I!h_ra was l.ai airs,ti(i aalleetlon eystaa Imto]lud !n teletlm to !he Jr1nAiR
inlur 11Rei°
G 01d -inpan+ Jdtocalttu 6his b,ljquuy fc• czlallrg cuto:aan tuYacn agprurte; ru~
nflllNnnal 92 hamn-i on e uatat' tupply oJotun nltaa9y ovarLnixaiP kamlt "uiol,'. Sne
fvr Vaitil Ic:l„titlan at1LCd at nn enmxtUoa hcaY'la'; on "p[il 14 197I, thit t2i:
d,.lrlct i . dotLlnPlu i by .,ts-ra arA 6eu1J not add uty ennlcro uees uhla9 ullItl
JaaJ .idlsc U iy {usnary duty o` C9rilny 4}ttio alma.ir in tlu distrlct Nr pcoxout+:
N 1 Or^1ily i 11 an {rik Qkyn au Ale 1?1 -t^LraCnt auaL U- 1no;ere6tvu dl-io hal¢l
V 11, n Cl I At:itrtut wllh no Qaipr1pncYt4 Plvi 11.11 t"ufnd olMc 1973
(.n 9Utul !o t1t I a octiduru (if an) ) foc taltlottni r."rli;c vluvn ridttlcYtsa~a
tt. oo,Mtelan I nr rantr iplntti" &hin pp tu te rn uuLfam plcn nz eat~ to tn
-1 unl Jaar dai't
boSne kaZG Ghc Cwnty ..n3lm,vrr aM tAv &-alth u,&.trict nca akita of tAo pl-in,
n{rtit ot*-w 0xild etuy hiro lytx i+ Anptt,tn• In urlNny
q Jhy dr_+n't lli Ardicstten c-i t!e flml plnt ornn oenGtan cav:,,u dlapwal^
ltl do,, 4.sn ltw Jtilti'iNhl d..l.-n p•01:10a F.tvren ths Co an, o«! tta R"lth Llct
U c. Glv 49
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a111tu- to n, iir th9 fl {J on plurs" and 1%,uons2
tt JhLl 1m ttij pzv3ent llaalzci Qallir a.omt ltai ue tax;qyorm axn ttk,.aJr
nu! Idlaln,• El uita 'InA ln;aWa +L dai t a%on uu+ L'e ILnMe tTio 65 50f7onth utlllty
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11 41rsn lhi 6nln'1o1J !n hlotn Mo nlrc+4jf t+con ruplaaa.1 tuicus wiuro So vu Ro
frna h^ra'' 7,-a thr n^.a 1eae1 lY-Is eL zillv e. aolvlrtp lhs d-tlni,u proal"_' tera
c i j lh^ rou t..Snt¢A dllla plnnt avor voik vi.n lt'u ln o n&Wzal drolmRtslY ai1
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41u..loo lu Uu n.&Jor 'lta arta of the aqjl`ct° dlut 1n oaGuUy kno'~n nlio,d
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u..i t+blu fn thts arna rau dulnJlla; rnpldly
1tl 1W4 mite1i clu7ga uill Uila pinnL pro'uee annuaUy irel wlmre ulll 1t Dc Quaped4
19 9tnw ! an 'unl:i-itnwlly onposad to 011lron plnrln5 erauiA the lrealaent
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cA-i.1r1ac 4 uch consarna ot no aenlequarce mkt a tclp to rleu Uro clte anA depth
V this hsU flnlahaJ plnnt
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the 'inal cimolty r112 aetually Ln arA uwt tht p~aall asst?
21 Nhy daenn'L the peoooccd ruC aall 'or upkeep of l1re groundn eurrauedinq the
pl-nt° tta+'t !t iie a firatnp 1f alloyed tu Ssy aut nai deaan't thn ylart
rinu'aelirc wjtluna an a unaW praluot4 11 co, hwi cUl tle telR+mo la dlapmad
o° ard vlll 1L aine an oior yro01"4
Yl 1 MvP nat oaun toon ohlu to ,et a fJharo on total land aat auido fcr the
03nt 4nlu°lolil ami (Ihcta) Ivore=
I• any o'' tho ^?C9^ atu+►y teln donz; !n areaa wlth Algh rolu4c cicahu4,-
u° i'"lut nt° 1mildn't thtr ce t?m nazat eppcaprlnla p11ca •ae eunsin{ dorlans~
Ft YI1-i6 wlll t- llio projns-tei a-i^rjy +.se fo: 1{dllae4 Any ISlt ak.llans'
Ptiln.-fna6inn' '.1 ica aw: nnte~ for cro-o Eh..n ors roPlxccaant dninfield? baount
al tlwa r-qulr,l eiah dsy to- pwinbnmvi•_, ctc? Hrc3vt avon potnt tn euntsnel.t
N tlu-tlin, tcryutrel?
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al uat ll 4e d'al.l i to un'►n or a d_rt-nt d' a,3s:nl cyulCU°
2 i m11y tr,ln; la eol InCor ntlcn vri nldllc-o luo taon licu ean,L=lu; omt
f u L -i Sn; On Otln- 1e °aat Apqirn6-- ths Ltrinty !a not ln conpli3nce uith
t iSii~ttv dr l1iet l eL.. 17u yu r-i ,o ?7u hm an "Ats_,.u W PuClle. Rieq-dc•
Ii ki r ju1rt lriia In:; uP z11 b ibllc dc.uvntt. 3ml a daslrxL~t I-AAllc docw-inti
v' 1c = unu h- r-s ial exFall+l 0.1 N) Rt It fu't1Ss ar1 uh,t 1n ro Cnly yaie
r M n_;; h, i Jaro lho jeo ri~ far nr i cq tall eni a traiulti,; :w ulaatu/ lhi
tl.p ^whral u- 41 Ora-, Atlq ir lc-, o _Ffuj r7oja~ rtlvt a Hhl np-elfla
tcI y wLici t-alin to ct.a1Ply7
r uoihd Iwl.) la iait +.ItM y<ur nt,&°f to Qlari -a Ue, nn-aau to eaah of tM ntmve
tli~w it all IE1 Ir31c qt- M1it nra do_i-vir, o° a raspon:+o 1tu.Lw uLl yeur
u l lt~ 1 a.-I m 1z~-.-
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{
LATE COMMEIVT nA'M OF WASHAVGTON SfATE QNERGY OFFICE
WASHINGTON Ou i u.. W an ur.a w.wdim a,W tunW iau
SevicerAer B 1918
Hr frod 05yher.1)
'
Spotmie Cowrty Planning Oept
II 811 Jef(ersen
SpnYOnc NA 99201
SU9JEp Araft EIS tor Ntdtlacn SuDdirfslon peraiopnent I
Dear Rr Oayher.h
Thank ynu for the eppartaifly to cmQneat an the Qucwoent refennced ahove
Our rLvieM hat Cecn lo dutrmtnn if htmw buildLrs are Aetng LncuuragiU to
coidply klUi the theitol insuleHOn atanderds spetlfiee in IcH 98 fivm the
leat laglsloUre scssinn 1Ae itnt five m{tlryttlwc measures 11ete0 bo1M+
ui'e iAJo us L-d In I18 98 fha'athor ouyye,tionb ore olso raonerended to
hiu ease enartjr afficiency
page _113 1 Add.quato IoKUlation In coilinqn, roafs, cxtarlor aa11s and
flour sLCllans"uuer unDc`nted 5pocrs
N 113 t U~c of speclal pla-inp
V ] Pobper usc 4f dupor Garrters
V ~ 4 Use of ueatherstripping wijllingiorigasknts nivun4 wtndotrs
doon acid other open(run
h Adepunlo InKUlaUon around dutts, plplrtg and dkyllyhts
1n 6 Pruvltians lor i,ell vtntfleted atlics
127 1 praper hulld{ny arlrntatton and wlw'usc of 1nnJr,caping ►o
qet tlte mutamm offieicney frup die outA aud wi st sldrs of
6uflJinga
123 8 Usa of storm ituors ond klndara anG use o► wlnQuus Uiat can
De opened und elu.ed
113 9 U5e of hiph poriont,tnce fureotct thot can rrtcovnr ivisto
htat frcwi flue gas or thosc nllh a flue shutoff
12310 Usa of ankryy afFlciant ligbts, naler heetnn air couJitiancrs
antl nthpr epplladtM
11 ProvLlons For 6ike palh anU walAlrtg patAd
'"lT 12 Provl,lnnt to lapil"nl carpaol lnn or rdnpun) Ing ar tn
'u enrououge use of eu5s translt
Idt. b6ft irolod nll{o-h ni6ctures uere addrt3sed in Uie Craft E15, and
nyuest couslduntfon be given to tne othQr points ic wall
5iotu►elY.
RECE eV E~ ~ B,~4K~.-
11a~ AnUenun
Jcr, d,y,u CnLrgy Progrlm Cinardlnator
' 'Wj@ SPDKAtlE COONiI
~ PIANMIqC OEPAAINEAI
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