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L¢t I back Aaa sAtr.n heFeCn a dedkalpp le 5pokm~s Coi.nty l0 6e CEEtlzE }ar foaQ pLVpast9 at
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ACKNO iYLEDCEMENT ~'I (~j~} '~T /1I~}r~ n x
C6uNiY of S~nu M[~ ~+~~ll~V ~Jl ~b.f ~~lJ ~V~~l~I V 1 Il ~11~~~J ON
6n t" 70 4 1995, Lda. w pemmoly n00eaRtl 14n~i1 J. Tupper A PLAT dN A PORTION OF Fne qfl ~ knv+rn ie pe PrevdaM ol 'I D C, Inc as v,e n en,owi no executea me mtnn ena Puepony
6~3eSt ~=nnwkaqm t~ mme m oe h~- }me um rowntwg oct ona ~ for u~a usee ~ TH~ N1~ f/4 OF ~'EC.2Si T25N, R44 E WH
w wnxM mmMmF, i+ene befwnm eet nn hurd ana orbiea mr ms-i mql rne d% orku rou, SPOI(ANNE COUNTY WASHINGTUN _
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d ~lt
Sbri ~ngmers,lnr-
~ uo~y i o~ iw a Swte ot waaninqtor, qVL ENGRIEp6 & LNlQ SURyEypR5
1 R..esg wmmngwn M 904 AACOCdNE fl9pU. SPpUWE WA, 99212-4789
~ a~e ~sa~~ a¢e-i~ vsc sts-iaas
P!~ ay~~
t~ ~t
PROGRLSS REPOR"C
llate Receiveci Pending File No.
Road File No.
ESTABLISHMEN'I' VACA'1'IUN CLOSURE
OF .
Section Townsliip N., Range E.W.M.
No. Addition of Subdivision
Petitioned by and otliers
Map to County Engiiieer Ordered Iuspection
Inspected by Dist. Supervisor lnspeclor No. Residences
Pole Lines Existing Surface Type & Width
Curb Urainage Fences
Estimated Cost: Grade $ Drainage $ Surface $
'Cotal $ Inspection Remarks:
Plat Bond: In force Releaseci Plat OK
Other Actions Necessary: Speed Cul-de-sac Vacation Dedication
ADDI'I'IONAL (check if applicable)
.
CONSTRl1C7'lON ENGWEER: (Cstablislunents anlv)
R1GHT OP WAY SUPERVISOR: .
TRAFPIC ENGINEER:
DEVELOPMGN"T SERVICLS:
DRAINAGE U'rILl1'Y: UI'ILITIES ENGINCER: OPERATlONS ENGINEER: ASSISTAN'T COUN1'Y ENGtNEER: ,
VACATIONS ONLY: Planniug llivision by Remarks:
COUNTY CNGINGER'S ORDER: PROCEED HOLD
REMARKS:
. \
P
SI ISEET DUAI V I' • T.4 ~S
PRdJECT NO. - P16846 DEalGNER-- ll, BERTO T3ATE- 41 14/98
F'RO3ECT DCSCRT r'T TON- RT DGEMONT ESTATEa 1'Jf_]RTH Bl"H ADfl
5TREET # 3.
NAME- 16TH AVE LEhlGTH- 1200.12 F"I°. WT1]TH- 6.50 FT.
BEGTIWIVIEVG STATION = 1035.00 ENpXNG STATiON = 2235. 12
C7hlE SXDE ONLY F'WT D"EH = 18.50 EW I I37H- 12.00 OW T DTH= 0.00
I iVTER # I T IiVCLUI3ED T 5W I D TH = 36.00 Si{ =0. 00 RAD = 20.00
TERM # 1 : CHC1F'F°ED
TERM # ` : TAPER TRPER LEhJG7H = 100.00
Z TEM t+iEASUREMCNT QLJANT I TY
SLJRrRCE flREl"-1- 9017.46 5. F.
R[]ADWRY EXCAVATxUIV 1.00 FT. 334.0 C.Y.
CRUSHED SIJRFACIh1G TOP COl.9R5E 0.67 FT. 222. 7C. Y.
CRUSHED 5ly1RFACIhfG BA5E CDURaE 0.00 FT. 0.0 C:. Y.
ASF'HALT CONCRETE 0.17 F7'. 1 14. 1TOIn35
. CURP `Fl'PE B Ek DST T NG 0.00 FT. PRDPZJSED 1 1 67. 0 FT.
5I I3EWALK EX Z ST I NG 0.00 S. Y. PF2OF'p5E17 725.4 S. Y.
STREEI' # 2
NAME- ftOTCHFQRD LEhlGTH- 485.47 FT. WIZJTH- 36.00 FT,
BEGIIViVIiVG 5TA'1'TON = 143.65 ENDINC STATION = 629.12
x NTER 0 ] 'C' T NCLU13EI] ISW I D7H = 36.00 SF'. = 0.00 RAD = 20.00
l"ERM # 1 : G'HUPPED
TERM # 2 : CHC]PPED
ITEM h3EA5UF'~EMENT ' OUANTI TY
SURFACE ARFA- 1 8368. 60 5. F. '
RQADWAY EXGAVATiON 1.00 FT. 680.3 C. Y.
CRUSHED SURFACIhlG TOF' COURSE 0.50 F"['. 340.2 C. Y.
CRUSHED SURFAC I NG BASE COUF2SC 0.00 F'T. 0.0 C, Y.
ASPHALT CUIVGRETE 0.17 FT. 232.4 "fDN5
CL1RB TYPE A EX ZSTFiVS 0.00 FT. F'FiC3F'EIaED 957.8 F1".
5l"REI_l" 1# 3
NWME- 17TH L,.ENGTH- 493.76 FT. WII]TH- 36.00 FT.
BEGI NiV ING STAT I dN = 395.00 E1VT7 I IVG STAT I DN = 888. i6
TERM # 1 : CHOPPED
TERfS'l # 2 : CRpSS STREET EXCLUDED EW 0.00 PW 18.00 5K 0.00 RAD 20.00
X TEh1 MEAaLJREMEI'+kT QUANT i TY
aURFAGE AREA- 16407. 36 S. F.
RC3Al]WAY EXCAVATION 1.00 F3'. 607.7 C. Y.
CRUSHED SURFACIhIG TOF` CQ1JR5E 0.30 FT. 303.8 C.Y.
CRUSHED 5lJRFAGXNG PF1aE COURSE 0.00 F"f'. 0.0 C. Y.
ASr'HAL•T COIVL:RG7'C 0.17 FT. 207.6 TC31V5
GURB °TYPE A EX I 5T dNG 0.00 FT. F'RQF'DSEIJ 911.3 FT.
~
Ti3TALJ
RaADWA'f EkCF1VATI❑IV 1622.0 C. Y.
CRUSHED SLIRFfiiCiNG l"GIF' COLJR5E 866.7 C. Y.
CRUSHED Sl.lRFACIhIG BASE CCIURSE 0.0 C. Y.
ASF°HALT C.C:iNCRETE 554. 2 TONS
CURB 7YF'E A 1869.3 FT.
CURB TYF'E B 1187.0 F7.
5I DEWRL.F: 725.4 S. Y.
i a ()FFICE DF THE COUhTY ENGIiNEEIt
SPOKANE COUNTY, WASFTNiGTON
TO• Jeff Forry, Departmerst of Suildings
FROM: EFII Hemrnings
DAFE: Tuesday, Apral 14, 1998
Si]BJ-ECT S G.C resalution #91-0882 Implementation (luly Z, ]991)
Attached are the indir•idual lot plans for each lot cantaaning a swale in RTDGEMONT E5T NaRTH 8TH
AI}p, plat # FE-1684G. Please givc the appropriate lot plan to the individual applymg for a building pErmit
an the lat, so they can draw their house and appraach tQ scale on the iot We will need this plan, and the
carresponding $1,400.00 cash surety, in the form of cash, lettcr of credit, ar savings asstgnment, befsre we
Can issuc the approach permit Alsa atkached are the letter of credxt and savings assignrnent forins.
r
"SAMPLE LETTER OF CREDIT"
"(USE BANK LETTERHEAD)" (BANK NAME
ADDRESS ZIP CODE
PHONE # AND OTHER NFORMATION
IRREVOCABLE LETTER OF CREDIT
AMOUNT: $ 1.000.00
NO.
BENEFICIARY:
SPOKANE COUiNTY ENGINEERS
1026 W BROADWAY
SPOKANE, WA 99260-0170
SUBJECT: LOT BLOCK RIDGEMONT EST NORTH 8TH ADD (Plat)
PLAT# PE-1684G. (Development)
Gentlemen:
We hereby authorize our urevocable Letter of Credit in your favor, and authonze you to draw on the
(bank), a draft up to one thousand (Dollars) (S1,000.00) , for the account of
(developer).
The draft, drawn under this Letter of Credit, covers the assurance of completion of installahon of storm drainagc, dramage
swales, sod and other work as is inctdental and related thereto m accordance with the drawings and specifications as submitted to and
approved by the Spokane County Engineer's Office on (date), and is to be accompamed by the following
documents• written request by Spokane County Engmeer's Office to (bank), at
the above address mdicating non-completion of all or any of the above improvements and that amount of money required to complete
such improvements.
We hereby agree with the drawer, endorser and bona fide holder of tlus draft, negotiated under and in compliance with the terms
of this credit, that said draft shall be duly honored upon presentation at the (bank),
at any tune before completion of the above-descnbed improvements or perforniance, m which event wntten notice shall be given by
Spokane County to the bank. (developer) shall be responstble for any cost
incurred by the county in excess of the amount of security.
Drafts, drawn under this Letter of Credit, shall bear on their face the words
Drawn under (bank)
(bank address) ,
Credrt No. Dated ,
Bank Name:
By:
(authonzed signor)
°`AGREEMENT"
In consideration of the issuance of a buildmg permit for Lot , Block ,
RIDGEMONT EST NORTH 8TH ADD (plat) plat # PE-1684G
(Developer)
has deposrted $1,000.00 with Spokane County as secunty for full and farthful performance by Developer respechng certam drainage
facilities and sod in accordance with the drawings and specifications as submitted to and approvcd by the Spokane County Engmeers
Office on
(date) 199 .
° Developer hereby agrees that should such dramage facilities and sod not be constructed in accordance with the approved
drawung withm six months of occupancy, Spokane County may then use the sccurity to bring these facilities and sod mto
conformance therewith. Developer shall be responsible for any costs uncurred by the county in excess of the amount of security.
Spokane County agrees to return to Developer auy unused funds upon satisfactory completion of these facilrties and sod.
.
NAME & ADDRESS TO IIE RETURNED TO:
(Developer Signature)
DATE
ASSIGNM F-N'C
For security purp4ses only, (deveioper)
hereby assigns to 5PC3KANE CCIiJNTY, a political subdivisian of the S4ate of VVashington, the follflwang
Savings Certificace Number
in the £ace amaunt of 51.000.00
and held in and bv
Bank of
Branch
(bank address)
This assigntnent is made as security far £ull and faithful perforrrsance by
(developer) of certain drainage facilities and sod for LOT BLOCK RIIDGEMC1NT EST NOR1'H STH A17D {Plat}
Plat # PE-1684G in accordance with the drawings and specifications as subrnitted to arsd approved by the Spakasne Counry Engineers
office on (date) , 199 .
A n y un Ferest benefts accro ing undzr said sav i ngs certi tieate shall remain the properry oF
(deveioper) Sazd savings eertificate ta be released ta (develnper)
any other party only with che pnor written consent and agreement of Spakane Cvunty
PROVII]EQ, F'URTHEFZ; the undersfgned daes }iereby authnrize
(bank) tv pay vver to Spokane County a11 crr a sufficient portion nF the rnonies in Fhe sauings certificate refereneed hzreinabove upon
tivritten documentativn being received from the 5pvkane Cvunty Engineer indicatmg that the purprases for which rhe savmgs
cer~ificate was assigned have not heen fully and faithfully perfomied as required and a statemetit of ihat amount of money whieh the
Coun[y Engineer as requirred and a statement of that ampunt of maney which the Caunty 6ngi:ieer deems necessary t4 canzpleie such
obligation. LTpon reCeipC of Sueh rvritten dacumetttatian, (deaeloper)
hereby authflrizes (bsnk) ko release to Spakane County thaT
amvunt of money requested up to the maximum amaunt in thc saVings cerYificate.
(develvper) shall he responsihle for any casts incurred by tHie county excess of the amoimE of security.
DATED tlus day of , 199_
BANK OF
President
+ f • } -
f 5ingle 6arref E7ryvrell,Type "A" with 2 Ctirb Inlets, Type 2
Meta! Frame & Solid ttd, Ty}~ e Nv.4 Spokene Gounty Standard
Spokane Caunky 5tondard, Sta.1 aTQO L=2 0 4'=8~, 8" dsep
16TH A~~1 Y lJ E Top af 'Lid 12041 1~4 F L.=2C~4Q 580, R{.
~ N 89'23'17"W 'Ca c`~-Casm, _)]'Pe 1 with - - - - -
Metal Frame, Type 1❑nd Grote, Type 2
~ ~Curb L~ne SPokone Caur~ty Standard, 5tc.i3f~)0
46' Rt ❑f CL 16th Ave
w Taa of Grate, 2040.35
~
Of
r ~I
140 40' 4- +
I ~ ~ I
__12" HQPF piRP_ "iq LF a 1 00% ~ -6 I
„ ~ 2037.65 I.E. (CB). 2037.35 1.E ({lW) L - - - _ _ _
"o.~-.~~._~~-_._.~~~.~w~~ _T49'a,~~~~ ~
~ LO-
J Bvttom af pond, Eleu. 2039 $5 49'
v r - See DetaiE A" I
-T----- -T-W -e€-Berm -arou-r~d-poc~d,--D eu__2t14I.5a5 ____L5----•_.- -
~ ~ I54
w° 54' 7( 25' Drainaye Easemen
¢ V
t J
n
7 N -
~
C
r r
lf.l
~ ~ N]
o 3
Q ~ a
G7 z
~
. - • : .
• ' - - - ~ , .
- . , .
w - " 140.00' .
N819`23' 1i 7Pw
! i P
w. ~rc f
w,~
GR,APFi1C SCAI_E (iN FEET)
Thes is nof on a5-bui[t drawing p 15 30 fip
CA~, Any mvd~fieations tv this plan cfzer the date an tre Engineer's stamp
VL]!QS the Engineer's sturnp 1" ~ 30'
~Exr DtiTE 10141 cj~a a M RRCH 16, 1998 66 F-~
~.OT ~ b ~.OC K 1 impsan Eivineers, Ine.
~+LC (~~IVppI❑T p~yI CIViL E~fCI[JEERS dc LANp 5l1RVEYsJf~S
IVL7MVT ESTAT8 ES IYofl IH _8TN f1D{~VlT 1 EO9V SPOKANE, WA 99212NE
i'~ Pk 926-1322
. »208" POND . SEC1 IVN DE1 AIL
0 NOT T❑ SCALE
~
~ ¢ _
~
~ Li BACK AND SIDES Qf "208" POND
~V) 0 a TC] 8E HIGHER THAN PAVEMENT 510E
~ a - - • ; , 0 o
Ld
POND ENTRY ~ a°
~ AS PER PLAN,' 3°~ MkN.~ J~--
aRYWELARIES 4' MIN. ~
3' I. GRA7~ Lli~E POND V~TI-! GRA55 SOD
~ . - . .
4:T Zii,
`'^i~'~fj~'
SLOPE 50[~ TO TOP aF DRYWELL
CDNCRETE CIJRB INLET. 4" ppRR7La~o
7YPE 1 SPOKANE CO. STD. CEMENT C4]NCRETE If pRYWELL 1 "208" POND FLOOR
PLAN VIE411: NDTE : Pond fsvor efevation on plan is trp ❑f sad.
'~DI~Q ENTRY NO7E ; R11 drywells shal9 be instralled with filter
fabrie (AM4C[J #4545 or approVed equal
around the Drywefl barrel and between
""*--ASF'FiaLT1',,- the Qrain rock and excavated Iateral ground. .
h_ 3" "L"=2" MINlMUM OR AS NpTE : Ta callect sediment, a 4'x4' (min.) piece of filter
'~~}G£ (~F '~AV'T. SPECIFIE❑ ON PLANS fabric sh❑if be placed betwsen the drywell ring and
C]F2 BACK 4]F CURB caver when the drywell is instoiled, then checl.ed "
pericsr3ically and cleaned Qfi sediment. Once yrass
has been established in the drainage swale, ihe
fqbric shall be remoaed.
D »A aa
~ 1 ~IL
Fpm¢w 1Y46
b zmpson. Engirceers, lnc
C1ViL EMGiNEERS dc LANd Sl1RAEYOliS
N.909 ARG[JNWE RaA❑
' SpOiAHE, v!A 99212 Pk 926-1322
~ 5ingls Barrel arywell,Type "A" with
Mekal Frqme & 5alid Lid, Typ e No 4
~ ~ ~ r~
5pokane Caunty 5tandord, Ste.13~f]C~
_ 16'Rt af ~y 1Eth Ave ~
~Tr~p nfTid, GU4174 GatCn kiasin,?ype wi h - - -
Metol Frame, Type 1 and Grate, Type 2 N$9'23'17"w
5p~kane Caunty 5tandard, Sta.13+(7(~ ~o
4fi' Rt af q 16fh Ave ~Curh Line
Too nf Grote. 204035
2 Curh lnfets, Type 2
'g' ~pvKane LountY„ 5tanaarc "1
Q~5' 5'~ ~ T40.0[}° ~=L ~v <r =0. a uaCv - I~-
/ ~ r 24.6' Sta 13+35.40, Rt ~
~ - - F-L=-2440 cUq
~
- -----___.s_~----~
16.4' 24.6' 32" HDPE pipe, 30 LF @ 1.00%
~ -2t~.37.£x5 i...E
L 49' Bottom of pond, Elav. 2039.85
See detail A" C
s-- s.-_- s_. -2 r "
~4, ~a7~-at-f~errrr-aroarr± pant-Ei-ev: 2@4# °5E~-'.------
5' ` ~
54' x 25' Droirrage Easement Ei ~
' Q V W
❑
~ 9 Z,
~
~ N
L~ ~t
C
r
~ lt.l Ci]
M"7
0 .11-
S4
0 CP
3 O to ~
0 ~ O
0 z
~
, . . 140.00! .
N 89 -2~17r W
W. A~,^A.& -
~~~lh
, ~rA irr ~ q
~ Q
+ q GRAPHkC SGALE (lN FEET)
TYiis is not an as-built deawing. 0 15 30 60
Any modaFcvtions tv this plan after VALEKthe date ❑n khe Engineer's stomp ~
VOIDS the Engineer's stamp - - 1" 30•
~ ExP ~ow cl~ ~ MARC}-I 16, 199$
F-dW S9i4
LOT 3BLQ CK 1 ~im~~~ Engineer5, Inc.
CEViL EMGINEERS & LAND SURVEYDRS
RiDGEMONT ESTATES NORTH 8TH ADaiTION ~~~,E w~ ~~°ZNE pR °26-,327
"20C] " POND : SL CTI[J1 d DL 1 AIL
~
. 0 NOT TD SGALE
¢
<
3:
m u' f~AGK AN~7 SIDES OF "20$" PC~ND
c~ ~ a p Ta BE HIGHER THAN PAVEMENT 5lDE
, ~ a ~
n
w in ~
PQN❑ ENTRY ~ ~ - ; , ~
A5 PER PLAN, 3' MIN. VARIES Y~ 4' MIN.
~ 3, . 'F . DRYWELL GRATE tiNE POND WITH GRASS S4D
r °
. 1'...•.w . z ^ ~
SCaPE" *L
i a. •rr,
CONCRETE CURB ItiLE7, 4n P~RTLl4N❑
cy I SLoPE soo ra TOP oF aRYWELL 0AWAVA TYPE 1 SP4KANE CO. STD. CEMENT CONCRETE
. r aRYWELL i :.208" POND FLOOR
PLAN VIEVV: N[JTE : Porad flaor elevativn an plan is top of sod
PONQ ENTRY NC3TE : Afl dr-yvvells shall be instafled wi#h fifter
,t-'~l.aF - fabric (AMOC(7 #4545 or opproved equa9
around thp Drywell barrel cand between
"*~ASPHALT, the Drain rvck and excavated lateral gr01-inci .
3' ~ 1„=2' MINIMUM OR AS
EQGE Of PA1a''T. SPECIFIED ON PLANS NOTE : To collect sediment, ci 4'x4' {min.} piece of filter
aR E3ACK OF CURB fabrwc shaCl be placed bekween the drywell rEng and
caver wherr the drywell is installe:d, then checl.ecf
periodica4ky and eleoned of sedirneril Once grciss
has been established in the drerinage swtale, the
fabric shaQl be remaved
DETAIL "A y~ .
F~a"
U►
. ~ tmpsart Eregineers, Ittc.
CIGIL ENGINEERS ds CANf3 SURVEYOR$
, N 909 ARCONNE Fta,4G
SPUISANC. WA 99212 PH 426-1372
'
. ~ 10° tltility+lEosement - - I - ~
F f I'Q! 18' ~
I
3{]° 6uilding 5etbac',
~ 30'
~ N89*23'17"W 103.70' i
n J .
~
4 '
+ r
1
r
~
r
~
3'
~
lsJ I
C,4
I
Y
7 s ~ cv
z
~
P
LLI
~ 6
C,
U ~ ~ ~
~ C~ I ~f C14
U7 z
CT - p
C + , ~
+ ! ~
~ I
m ~
a ~ ! ~J
E f ~
~
___Y 3'/
c in
Bottom ~ of, pond', Elev 204487 ~L
~ 5ee -Detad, "A" - ~
_ Tap, vf Berm around ~pond, Elev. 2046.5 • ` ~ Curta irvp, 8,. E7eep Ix 5 LF
o . S' k 82` Orainag Easement Curh niet, Type 1. L~5'
80.22' Spo ne County Sta idard
~ penirsg 4+00 Lt.
i. ' =2045 60
See []etail "A"
wASi~j,.,~ Curh Line
Single f3arrel drywefl,Type "R" with
;c Metfll Frame & Grate, Type h9a 4
5pokane Cvunty Standord, Sta.4+20
~
~ AN- ~ 25'Lt vf ~ Raichford 5treet
Top of Grate, 2045.37 ~
1ITH AjT1~ N89'23'1 7"W G~2APNIC SCALE (Iti FEET)
S~C]NAL E`G f V ~2
D 34 20 40
~ ~ .
~ EXP CYA7E 1 U141
MtaRCH 16,1998 This is nat an ❑s-hudt drawing 1" _20'
Anp rnradification5 to this plan Qfter
the date on the Er~ginear's starr~p
LOT 6 BLOCK 1 uaioS tne Engineer's 5tomp 6& impsorr. Engineers, Inc
CIVIL ENGINEERS & E.AhfO SIJRVEYORS
RIDGEMONT ESTATES NORTH 8TH AaDII-i~N . ".gQ9 ARG°""E R°A°
SPO}tANE. 4YA 99212 pH 926=1=
i
~~208 " POND : SEC'TION DETAIL
LL-
C) le; NoT TO sc~~E
J
Q <
~
~ o BACK AND SiDES OF "208" POND
o 0 TD 8E HIGHER TFlAN PAVEMENT SIC]E
> a ° -
~ 0
LLI M 0 °
PdND ENTRY ri°
R ~ aS PER PLAN, 3' MIfV:-~ ~ °VARlES 4' M1N. ~
3! 6RYWELL G'RAT'r- LINE PaND WITFi GRA55 SQD r .
~ _ z
4.1 SL o~~
' SLC3P~ ~Q[} TD ~fflP ~?F DI~YW~LL
CCJNCRETE ~CI~RB 1~lLET, 4° PO1~T~Ah~[] ~
7YPE 1 SPOKANE C(7 STC3. CEMENT CL]NCRETE I'pRYWELt 1 "208" POND FLQOR
PLAN MEW: NOTE : F'ond floor elevatian on plan is top of sad.
POND ENTRY • hfOTE : Alf drywells shall be instal1ed with fi9ter
fabr4c (AMOCD #4545 or capproVed equal
ar-ound thre Qrywell borrel and between
`*-ASPHALT~ the ❑rain rock arad excavated kcikeraf grounci. .
3, „L„=2' MaNIMUM [?R AS
EDGE aF PAV"7. SPE+CIFIED ON PLANS NOTE :To eollect sediment, a 4'x4' (min.) piece of fi'4ter
fobric shaN be placed be~kween the drywell ring and
~R BACI~ C)F' CUf~~ cover when the dryweld is 'snstaiied, then checked
periadically and clEaned of sedimerit. Qnce grnss
has been estoblished in the drainage swafe, tf7e
fabric sholp be remQved.
TL 97A 77
' DETA~T
rrrrr~.e rYa6
' • 6& impsarc Engineers, fnc.
pVlb ENGIMEERS ec LAM1fO SURVEYORS '
' Id 9[39 ARGOMWE ROA[3
SPUKAElE. WA 99212 PYi 926°1322
N89'2.3'17"W
Ba.aC1' ,
~
~
~ w
~ F
~ ~ 1[7 10
~ rp 4
N c17
~ V) v
z
~
c -
a
0[]
0 c
r*] Q
~
a~
~_~-.4-~z-----29'-------___--__-
~ -
LO LO
= r - Y
24' 24'
Battom Qf pand, Eleu 2037.50
a r ~ ~ See Qetcil "q"
~r Top af Berm aroursd pvrd, Efev 2039 15
---t - - 5
23' X 30' [3r.ainage Easement
--i - ~ ~ 8a.00' k
y
L Y._ - ~ ~ ' • ~
M ~Curka Drvp, 8" ❑eep x 6 LF ~autale $orrel Drywell,Type °B" with Cur6 Line
c~I%1~ Curb Iniet, Type 1, L=6' - , etal Frame & Grate, Type Na 4
5pokane County S#ondQrd Spokane Caunty S#ondard, 5ta 4f56
openmg 4+39 20 Lt , F L.=2038 29 25'Lf af ~ 17th A+re.
,.6-T `a See Detad "A'F Top of Grate, 203$,0
y- -
17TH A VE N $9'2 3'17W
~285 8E(?
~yAL GRAPHIC SCALE {IN FEET}
n 10 zv a~~
~ F-xP owTE Ta/a/
~
- MARCH 16,1998 This is rivt an as-bui{t drowing. 1" = 20`
Any modificatians tv this p9an ❑fter
the date rn the Engineer's sf❑mp F-400 ,wa
LOT 10 BLOCK 1 VQIpS the Engineer's stamp. 6S ZYnpS07t. E7t.gi',ReeTS, 1TtC.
cIwL ewcIr+EERs ae L,aND suavEVnRs
RIDGEMONT ESTATES NDRTH 8TH ADDI~~dO~J - ~ 9°9 aR~°N~~ ~°A°
SPvKRNF- WA 99212 PH 926-13Z2
"208 1'ONII3 : SECTION DETAIL
~
o NOT YQ SCALE ,
Y ~ U "J
<
~
M LJ - F. - eAcK aNa s«Es oF "208" PoND
, • p p TC3 BE HIGHER THAN PAVEMENT 51DE ,
> 0 0
• _ ~ , ~ .
w m - ~ °
c n W' . z z
POND Eh1TRY O '-D 0 o
• A5 PER PLAN, 3' MlN.-~-~~- 11ARIES 4' MIN. ~
3* ~ y - DRYWELL GRA1E L1lVE PONa 1MTH G'RASS 5OQ
► .
~
¢ 1 s~ 0F'~ M1 ~ - A ~ 5~`~~
CONCRETE GtJRB INLET.' SLOPE SOa T[] TQP OF DRYWCLL
- ' ' 4
Po~n~N❑ TYPE 1 SPOkANE CO STD. CEFAENT GOhICRET£ t ORYWELL 1 "20$" PQND FLCIOR
PLAN VIE1N: i . ~-~~,•"~~i NOTE : Pond fioor elevotion on pIan is tDp oF sad.
POND ENTRY NOTE : Afl drywelks shall be installed with f9lter
fabric (AMOCQ #4545 or approVed equal
' " , . . around the CJry►+ve9l barrel ond between
-'Q*- .
ASPHALT~ the Drain rack and excavatec3 9ateral ground. ,
3' "L"-2' MINlMUM QR AS NOTE To callect sediment, a 4'x4' (min.) piece of filter
EDGE OF PAV'T. /1_ SPECIFIEC7 QN F'LpN5 fabric shall be plac~:d between the drywell rmg and
+DR BACK ~7~" ~UF~B cover when the drywell is installed, then checked
periadicaily and cleaned af sediment. Once yrass
has been estakalished in the drainage swale, tk;e
fabric shall be removed.
~ • , DETAIL "A 99
F1sb
Engineers, lre.
6&i7apson&
GI111L EihIGINEERS & LJIN6 $URIEYORS
H.909 ARGOJJdNE ROAD
@ =f: , . . ~ SPDKANE, WA 99212 Pik 926-1322
g
C1 . .
~ E
~ N89'23'17"UU
80_00'
MC
VrAS4~~~~,r~- .
2857e~ ~
~.c ~rsr~
>VAY.
~ F-xP oaTE 1014/y'g ~
3 .
~
o~
0 10
~
O v
p
~ ~ • ~
~ ~ U7
z
~ c
~ :2
~ ~ [z1
E
~
N
~
29'
, - _ -__--_,_.---___`_-f'_-_-----m--T- - - _ - r _ _ _ _ `I
~ LO
Bvttam of pond, Elev. 2[}37 50--°~_ 24' ~24' - i
~ See Detail "A"
I • ' I ~ ~ ~
i Tvp vf Berrn around pvnd, Elev. 2039.115
t ^I
j - - - - ' a ❑ r~ • - c+a d ,
~ 29' 7C 30' Dramage Easemertt ~ , . ~ ~
~ 5' J, 80.00' 5 • . ~ 5
~ ~ J
U~- - - ~^I
[}autrle B4rre1 prywelf,Type ",B;! with ~ , • _ . -Curb• Qrop. Deep x 6 LF N\-Gurb I-ine
Metaf Frame &Grate, Type N0,4 , , . J Curt`,+nlet, Type i, L=6'
5pakr~ne County 5tandard, 5ta.4-~24
251t of j 17th AVe Spaka`ne Cvunty 5tandord ^
Top af Grote, 2038 0 q opening 4+39 20 Lt , F L-2t?38 29
, - _ See Detad "A„
' 4 • ! 1 T.[ 1-T A VE N 89'23' 17"Vd ,
GRAPHiC SCRLE (IN FEET)
0 10 20 40
. q
MARCFi 16319g8 This is not an as-auilt drawing. 1" _20'
Any mcadificatsons ta this plon after~ FwftUd 19"
the date an thE Engfneer's stamp
LOT 11 BLOCK 1 vaIas tr,e Engineer's stflmp. ~ impson Ergineers, Inc.
- pwL ENcINEEss & LMo suRveraRs
N909 ARGoNNE RQAo
RIDGEM0NT ESTATES NOR I N 81-H AflD9T10N SFOKANE, iVA 99212 PH 926-1322
. . 4
> > ~ ~ 8" ~ ~ ND : SE(~ TIV N Dlr'1 TAIL
0 hJ07 TO SCALE
Y _j
~ ¢
~
c-' Li
~
BAGK AND SsDE5 OF "208" POND
1- ~ _ . . ' o ~ 7C3 BE HIGHER TFiAN PAVEMEN7 SIDE
a ~ ~
< n~ ~ ~
~ o . . .
` 0 r)
z z
CD Ckf -
P4Nd EhlTRY ~ ~ , ` C) 0
w 0 ' ~ a_
AS P~f~ -PLAN, 3' M~~I. VPrR1E5 4' M9~1. ~
:3'. .~C~R''WELL GRATE LINE PQI~Q VV~ITFi GRA55 5OD
r -
L ~ , lz
C~(~~` '_'yaL~ A,.^ C~~
~ 11 * i a
SLOPE SOD TO 7C3P OF ORYWFLL
CC7NCRETE CURB INLET. • 4" P~RRTLA~D `
TYPE 1 SPOKAIVE ~O. STD. CEMENT CQNCRETE
_ F DRYYELI. 1 "20$" POND FLOQR
PLAP! tihEW: NOTE : Pond floor eleacatEOn on plan is top af sod
P0NCD ENTRY NOTE : A!I drywells shalf Fae instalfed with filter
fabric (AMOCO #4545 csr approved equal
` ❑rount! the i3rywell barre6 and between
'4"'°ASPHALT~ the Qrain rock and excauated laterel ground. .
3, -"L°=2' lv~11~11ML9M 'OR A~S ~~G~ OF ~'A~''~f. -I SREGIFf~D PLA~k~ hIQTE : To collect sediment, a 4'x4` (rriin.) pfece of Filter
OR ~~CK DF CURB fabric shall be placed between the ~iryu,rell ring and
cover when the drywel9 is installed, then checl<ed
periodica9ly and cleoned of sedirrient. Once grctiss
has been estoblished irs the drainage swole, Lf-ie
fabric shoii be rer-rroved.
~~~L "A 33
~ f rwaaa iaae
" s' impsa~. Engi7+.eeTS, Inc.
GlAL ENGNEERS ek LAND SURVEYORS
M.809 ARCCINNE ROAp
~ SPaK►WE. wA 59212 Pti 926-1322
-
~ ~ - 1I 1 H AYE
Existing Rouble BnrreY Orywell,Type "S., wikh ~ N89'23'17"W '
~ietal Frarr3e & Grate, T~e ~lv.4
5pvkane County 5tandard, Sta 4+~}5 Gurb C3rvp, 8" Deep x 6LF ~
25'Rf af C~ 17fh Ave Curb Inlet, Type 1, L=o' ^
- 7vp vf Grate, 203$ 0 Spoknne County Stczndard r-Curb LEne
~ vpening 4+39 20 Rt., F.L =2038 29
~
25• LV'
~
O 5 I 5' ~ SQ.oo' o
r 2037.50 N - ~ -
30'
~ o
LC)
L - - _ _ - - - - ~ --t-Bottom vf pqrsd, EieV. 2037.50
~j 21' I 5ee Retail °A° a~i
~ Tvp of Berm arvund pand, Elev. 2{ 39.15 qC->
10 (0
~ ~ I- _°---°-----°-----------------w _
-V--------
,31
31' X 30' Qrainage Easemerrt-1Z
. z
~
~ U
~ O
~
w
N
(/7
. ~
t
~ 2 .
3
~
ll.i C)
a ~ N'7
~ ~ W
Q
tn D -`Y
~ C) to
~r) p'7
z 2
Y _ ' , ' . ~ ~
E-.
Q)~
g Q~
_ - ' .
~mcM~~
46 2
Bo ao'
~,.1 ~ N89'23'17"W
~8578
~SfL),'vqL~°~'~ ~ GRAPHlC SGALE (1N FEET)
F-*P GATE 1 U14A 10 0 10 20 40
MARCH 16,1998 7his ss nat an as-kauilt drawing 1" = 20`
Any madificativns ta this plan after
the dote an the Engineer'5 stamp
LOT 1 BLOCK 2 vaias tne Engineer's 5tomp. & impson Engirreers, lnc.
CIViL. ENCINEERS $t LAND SURVEYpRS
RiDGEMoNT ESTATES ~ORTH 8rH aDaITiON N so9 ~~~~~E RoAo
SPpKANE, wA 99212 PN 926-1322
.
"208 " POND : SEC7'ION DETAIL ~
0 NQT TQ SCALE
c_a a
M
C, 6ACK AND SlQES OF "208" POND
~U) ~ ~ TO BE HIGHER 7HA~! PAVEMENT 51DE
LL-
Q ~ , . ~ LL-
a Q ' • -
0 ci
od
f'DN~D EN7RY ° ~ ~ 0
~ AS='- F'ER PLAN, ` 3' M1N. -~~m-L"K VARIES W- --K 4' M1N. ~
DRYWELL GRATE LINE POND WITFi GftASS S0D
•G ~
1
4: Z ~ SLOAE" ~ ` ~_1 4
~ iD SLOPE SC]D TO 7OP OF aRYWELL '
CONCRETE CL1R8 INLET. . 4"_ poR-1.p,1~ TYPE 1 SPflKANE CO. 5TD. CEMENT cONCRETE t~RRYWELt 1 "208" POND FLO{7P
PL.AN VIEW: NDTE : Porsd floar ereVation on pIan is top of sod.
. POND EN7RY NOTE : All drywells shall be irrstafled wikh filter
~i:•~;-:.;~~, ~ - fabric (aMOCO #4545 or capproWed equal
. around the drywell barrel and between
-`'°ASFNAL,T ~ the Drain rock and excavated later~l graund. .
3' "L"-2' MINIMUM OR AS NOTE :TQ collect sediment, a4'x4' {min.} pfece oF f+lter
E[]GE or F'AV'T. / 5P£CIFIE❑ ON PLANS fabric shall be placed hetween the drywell ring and
• QR BACK [JF CURg cvver when the drywell is installed, then checked
} perivdically and cleaneci of sedement. Once gr'ciss
~ has been established in ihe drainoge swale, tfFie
, - . fabric shall be remoaed. -
~
dJ' . .
~p. E1 AIL ~aA 91
4 FqWWp 5~48
~ ; • Vimpson Engineers, lnc.
~ Cl1M1L ENGIEJEEiRS dc LAN❑ SURVEYlJRS
N.909 ARG[]NHE RQAU
SPOtaNE. WA 58212 Pi 528-1322
- rr
~ Double Barrel Drywell,Type "B" with
i Metal Frame & Grate, Type No.4 I
Spokane County Standard, Sta.3+ 85
i 25'Rt of Rotchford Street
I ~ Top of Grate, 2045.37
W - - 3
N Bottom of pond, Elev. 2044.87
r~ - - - - , / See Detail "A"
o
Top of Berm around pond, Elev. 2046.52
N
° ~I ~5'
Z ~ 20' X 30' Drainage Easement '
N87'29'38"W
~ 5' 120.00'
o ~
~ I o •
~ 27' N
L Curb Drop, 8" Deeplx 5 Ld 5'
Curb Inlet, Ty e 1, L=5' _ 30' ~
~kane Cour_y St3ndard ~
~ opening 4-+ )U R
F. L. = 2045. 60
See Detail ' A. I i
i
~
~
q o
U; ~ W
I ~ N
O
co M
~ N
I Z
I
~ I I
I
I
O I I
1
. . .
' 120.00'
= 18' 10' _
10', Utilityi Easement S87'29'38"E
I ~ 30' .
• • ~ ' - • ~ - 30' Building Setback I
. i .
~ I
C~ McM ~ i • '
~ F w'ASy
4w
28578~
U~ FCISIER~
'AL -G GRAPHIC SCALE (IN FEET)
~ t 0 ~ 20 40
I EXP UkTE 1 U/4/ y 8 0 1
MARCH 10,1998 mis is not an as-built drawing. 1" = 20'
Any modifications to this plan after
the date on the Engineer's stamp `°dt°~0
LOT 2 BLOCK 3 VOIDS the Engineer's stamp. 6& ti7►tipso7i, EnyineeT's, ]?1C.
CIVIL ENGINEERS dc LANO SURVEYORS
RIDGEMONT ESTATES NORTH 8TH ADDITION N.909 ARGONNE ROAD
SPOKME, WA 99212 PH 926-1322
. . , •
"208 f ON1J . SEC1 ION DETA1,L k
~
0 NOT TO 5CA'LE
~ < , . .
cn
0 6ACK AND SIQES OF "208" P[7ND
1--: V) p 0 70 BE HIGHER THAN PAVEMENY 51QE
o 0 Li- ~ ~ . i ~ `
w M
z z
POND ENTRY n D ' . .v. . 0 Q
uj c) -a . • ~
AS PER. F'LAN, 3'r_MlN.--,-1--W VARIES u- --a 4` MIN.
.3j DR'f'dVELL GRASE LINE PONI] NTH GRASS SQD
►
z
SLQP~~ :a
.w r " it3
cONeRETE cuRB iNLET: sLaPE sOo To TOP af ❑R~rwE~.L
TYPE 1 SPQKANE CQ. 57D. ~oRn,~Na
cEMENr coNcRETE aftYYiELL V~ °'208" POND FLOOft
f'LAN 111EW: N(]TE : Pond fiovr elevotsan ori plan is top of sod.
PQND ENTRY NDTE : Afl drywells shall be installed with €iiter
. • - fabric (AMC]CD #4545 or appraved equal
• around the [7rywell barrel and between
-'"--ASPHALT~ the Drain rock and e~ccauated loterc~l ground. .
~•L"=~` ~i1~Ih~l1M OR AS hlQTE : Yo collect sedicnent, a4'x4' (mi~r.) piece af iilter
'~~3G~ aF' F'AV°T. SPECIFI~D ON PLANS fca'bric sha11 be Rlacec~ between, the dryweli ring and
, DR 6~1~P~ OF GUF~B cover when the dry+well is installed, then checkeci
, Periadically cand c9eaned of sediment. Clr-ice grrass
has been establisherJ ira the cdrainage swale, tl-ie
fabric shall be remaved
~ L~ ~~IL a1A »
Pw.n~9 IYiE
9impsora Enganeers, fnc.
Cl41L ENGiNEERS & LRND 54,iRVEYORS
M 909 AFGOhltdE RC]AO
SPGKAN€, WA 99212 Pri 425-1322
~ . -
~ ~ - - ~
a
i
7'. I 10, . I ~ 4
30' Utility, Ensement
i
~ I 3Q+ ~ '
30' BlJli[fing SetbOCk
~ f
I
s
~ N89'23'1 7"W
120.03' -
z i
- i
~
i
~
I
~
I
!
f
. ~
I ~
~ ~ f a
C~
co
~ • ~ t3
I ~ N
~ I Q
n
cq
~ d
!
I
30'
f
5' ~ s y
~ ~27'
f ~ ~ Cq .
120 00'
N87'29'38"W
u? ~ Bottvm oF pond, Elev. 2044 87 ,
~ 5ee Detoii "A° +
27° J••~ Tog af 8erm arvund pond, Elea. 2046 52 d
5'- - - IV. McM
1 , 2(}' 7( 30' Droinage. Easement 2 1kA3y
!
, Oouble Bar~,e9 drywell,Type "B° with
Curb Drap, 3" D~ep x S,LF Metal Frame Sc Grcte, Tyge No.4
~ Curb Inlet, "ype 1, L=5' Spvkane Cd~unky Standard, Sto.3+85
Spokane Cc inty' ~tcndor~i 25'Rt af ~j Ratehfard 5tr2et • 28578
~ opening r+00 Rt., f 'Top of Grate. 2~]45.37
F.L -2045 r ~ AL
5ee Datad ~A"
~ E7CP E1ATE 9 0141 41 B ~
cRAPHic scALE (iN FEET}
o in 20 40
_ - - ~
MI'~RGFi 10,199$ TFtiis es not ❑n ❑s-built drawing 1" ~ 20'
Arry m0dlfICCJtIf}nS #a this plorr ❑fter
the dote on the Engineer's stamp `~"'"'"9'8
LflT 3 BLOCK 3 voios che E~,gi~,ee~ s 5ta~,,~. ~ i~,psnn Enginem, Inc.
csv~~ ENcINEeRS & Lawa suRvFVORs
RIDGEMON ~ESTATES NORTH 8TH ADDITION ~ 9a~ ARGQHNE Ri7Ab
SPDKRNE. WA 492i2 PW 926-1322
si208"' PO1YlJ . Sr~CTI[.I`1V lJETA1L ,
0 NL'T T{3 SCALE
, U ~ •
< ~
~
~ w eAcK AND siflEs oF °'208°' ParvQ
o Q Ta gE HiGrc~R THAN Pauen~ENT SdoE
~ ~ o a
n ~ - LL- ~ . ~ M - o ~
PQn~D EN~'RY- ° ~ ° ~
--E*-,4S PER PLaN, 3' MIN: VAR&E5 4' MIN. ~
rS ~ CJRYIhfELL GRATE LINE POND WITFi GRASS SOD
►
~
z
4 '"•{.w, . . -
~ 5p~ - ~ ~:"1 ~~,4~P
CDNGRETE CIJRB 6NLET AVI SLUi~E SOD TO TQP dF DRYWEI..L
~ 4"
pp~TtA~a
TYPE 1 SPOKANE CO. 5TD. cEMEr~r coNcREre f DRYWELL 1 "208" PaN❑ FLOQR
PLAN VIEW: NOTE : Pand floor elevation on plan is top of sod.
POND ENTRY NOTE : All drywetls shall he installed with f4lter
fabric (AM'OCD ~4545 ar approVed equal
i crround the 6rywell borrel arrd between
"`"°ASPHALT--..~. 3• L"^2e MIIMIMUIV6 L16A the ❑rain rock and excavote~f Paterol graund. .
u E1J
• E~GE QF PAV'T. -S SPECIFIED C~hl F'LA~lS N'~TE 7a~ collec°t sedi~ner~t, ~u 4'x4' ~(mira.) piece oi filter
fobric shall be placed between the drywell rmg and
. C}R BACK OF CURB couer when the drywell is instal~ed, then checked
periodically ❑nd cleaned of sedimenk. Qnce grnss *
has been estabfished in the dreaincage swale, the
frabric shall be remDVed.
1~J A ~s
E1 AIL 91
dimpsan Engineers, lric.
_ GIIRL ENGIh[EERS dc LRWD SURVEv(7RS
. N.809 AftCONNE RQnA
• SPO(AtdE, kIA 99212 PH 925-1322
~ I [3ouhle 6orrel Orywelf,Ti ype "6" ►vith
p Iv^IetQl Frome & Splld LId, T y~ e fJa 4
Spoknne Cvunty Standc~rd, 5to 18+20
16'Rt af 16th Ave. 16TH AVE1V UE
Tvp of Lrd, 2047.03
v ~ 4 Catch Basin; Iyp e iwifn ~ `17"W
12" ~ OPE pspe, Me#al Fr~me, Type 1 flnd Grate. Typ e 2 N89'23
30 L!~" 1.OC}% 5pakar~e County 5tdndard, 5ta.7$+2D o
2042.83 I,E. {CB}. 46' Rt ot' T 16th Awe
204~ S3 IE. ~DWj o af Grote 2045.53
87' X ~5' Drvinage
Easeme it
~ J ~
121.74'
1 ~ Ln
62' Ln
F- --Lr)--~~-~..~ ~ I~~
~ 5 (v ~
' 5' ~ 15~ 62' ~ ~
-_----_------°------s- 0
r ~ ~
-Cu'b Drvp, " C,eep 7 LF ~ $7~
Curb Inlet ype 3, Lf=7' Saokane 6❑ nt) StQrTdard ~ Y a
Vopening +Z; Rt., F.L.=2~45.76 < V ~
Sde petail ~
Bvtto of po~ ra~'~I ;v. 2~45.03 z
See D tdil 1~ i
TOp CY gerRi 4F~[]I1flJ ppdCf, EEeV. 2Q46.5$ .C
J I 4J ~ -
Curb Line f f 0 il ~
j 4 (D 0 ~
~ I f
I ~ Y ❑
~ d Z
!
LL? S ~ ~ ~ ~ n 1
~N Q~ r
ci
i
0 I r I 'r
z
'~'i dJ' ' ~ ` . ~ , ~ ~ ~ ~ : r . ~ 7'
utffit~ E❑Sement ;
,
I 30
" ~
- ~ - - Building 5etback ,
145 14' ,
J - ; N89'23'17"W
C .
~ • ~
~
`N• c4 ' I
Jq p~ W, s ►rr & ,
f ~ r ~q
C+
• ~
.e~ ~78 This is not ❑n ~as-budt drowing GRAPHIC 5CALE (II~ FEET)
p 15 30 ga
~ ~d~cr4 ~ Any madifications ta this pian after 3sl~rYALthe date or~ the Engineer's starnp -
VOIOS ths Engineer's starnp. 1" = 30'
~ F-XP DATE 10/4" MARCF,6 16, 1998 .
s-04 t90
LOT 4 B LOCK 3 i°~~son ~~ziwers, Inc.
CivlL ENcIMEERS & LaNo suRvEroRs
RIDGEMONT ESTATES NORTN gTH A6DITION SppK,qFtE, wp gQ2~12N~ pH ROAO
$26-1322
. , , . .
"2 C} 8"PaND : SE CTION DE TA IL ,
~
a NOT TD SCALE
c) 4
o~ BACK AN❑ 51D£S OF "208" PDN❑
~cn W. a TD BE HIGHER THAN PaVEM£N7 SIDE
> w 0 o
' - ~
0 ~
. w cn `m 0
POND ENTRY ° U
A5 PER PI.AN, 3' N91N.~~ ~ VARIES 4' h~kN. ~
3' -DRYVJ£L~. GRATE LihlE PDNQ WI"fFi GRA55 SQ[~
~
a . • E
p
z
F 5~d~'~• ~ l~.~ LQ
` . ' sQ
S~aF~ 5[~❑ TO TOP OF DRYWELL
CGNCRETE CLVR9 I~lL~T ' ' .
, - 4 " ~QR`~.~i~a
TYPE 1SP4KANE C0. 5TD. CEMEt-? s CdNCRETE t!DRY'~FLLL 208" PON[3 FLC]OR
PLAN V!EW: NO7E : Pond flvor elevaticarr on plan is top o# sod,
PQIV~ ENTRY 'NQ7'~ : All dr,ywells shafl be installed with fifter
fabric (AMOCD #4545 or approved equal
raround the Drywell barrel and between
-'""--ASPHALT-,,,, the Drain rack and excovated Ioteral ground. ,
3"L"=2° MINIMUM OR AS NQTE To cvllect sediment, a 4'x4' (rnin.) piece of filter
EaGE OF '~AV'T. /1-1 SPECIFIEQ ON PLpNS fabric shall be placed between the drywell ring and
OR BAGK QF CURB coyer when the drywell is installed, then checltied
, periadically and cleaned of sedirnent. 4nce grciss
hps been eStQI]li5hf'd in the cirainage swule, the
fafaric shall be removed.
a
' Dlr'a TAIL 9913 A 11
F~@4 1pl8
' ~ ~mp~orc ~ngineers, Inc. ,
. C7ML ENGINEERS d[ LANO 511RVEYORS
. N 909 ARGQNN£ RRAp
, i SPOkAHE. WA 89212 PH 925-1322
- . ~
,
Ax. ~
~ P C:s I~ A N~ d ~ C ~ T_]' I14 7 Y
EU[LC?ING RND PLANNLNC • A F3MSfC7N IJF THE P[1BL]C Vy7QR{$ []EPARTMENT
]AML•5L MANSOril. C.B O. DIAECTDR T]ENNLS M 5Cd"I7. P.E. L71AECTpR
RECEIVED
MAR 2 3 1998
' ~~~~~DUM
sPoMwE COuMr ENGIraEM
DATE: March 23, 1.998
n~e;r,i~t
TQ:
Spoka~ae County XJFVision of Utilities; Jix~cz Red
5pvkane Caunty DivisiQn of Building & Planning; Je{f Farry
Spokane Regional Health IJistrict; Steve Holderby
S$okane Gounty ParkS, Recreation and Fair; Steve Horobiowski
Fire Pratectian District Na. 1
Vera Irragation District
Central Va11ey 5choal Dastrict Nm. 356
FRaM: I.auis Webster, AICP, Assvciate Planner
SUBJECT: Propased Fina1 PIat of PE-1584-92; Ridgemont Estates Narth 8`h Additian
Erzclosed find copies Qf the above referenced fina.l glag. Please review and forzvard any
comiments by April 6, 1998. If yQU have any questions you may cantact ra-ie at 455-
3675.
Thank you.
kc
Enclosure
e: 5ullivan 5outh cIa Ken Tupper, I2929 E. Sprague Ave., Spokane, WA. 99216
Charles Sxznpson, 949 N. Argonne, Spokane, WA. 992I6
I026 WEST BROAD41?~t1' AVEWE • SPCJKANk:, WR5F-ItNGTDhf }92([]
PIiQNE [509] 456-3675 ' FAX (509)4564703
TgD. (504) 324-3166
5ingle Juurnal Log
04 Mar-98 Memv t4 File by Dean Franx
Log ID: 617 '
Project Name: Ridgemant Estates N. 8th Additi Project No: F-1684G
I1og Date: 0310411 J98
Meeting Type: PhQne Ca11
Parties: Kevin 1vYcMullnn @ 5impsan Engrs
Subjeet: Drainage 8asin N1ap
Notes' Simpsvn Engrs submitted a rc►+ised t~esin map for this praject, vr~ 2l2f]I9$ T1pqn
. cranducting a site Visit, I oaped Kevin and inFarmed him khat T concurred vAkh his hasin
map lsmits
's
i
r
ar
~
1
RECEIVED 6& impson IEn ineer6, Inc.
"F- 4 0 1998 CfVlt ENGINEERS ANQ AN[3 RVEYOA
SU S
~~ONE CGuNTv ENGINEER N. 909 Argonne Road ■ 5pvkane, WA 99212 .
[509) 92fi-7 322 • Fax: 92fi-1323
YO: SUBJECT. es+a+es ttbr+~ SrH A4d;+iah ~
DATE: Z'OT" jRq"g
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'}ear D e.~~ .
C) h
t-ne-o-fkirlg -f6 r g1 A
:Lv. -kke wtiee~ii~qfel+ i°ke 6ctsi v s kowq-fo r
1~oLsiv. ~ ~eLs ~ mcrLp~~fe- . -tkoc+ a
te3ise-A basan " be sub~►,~~ ~ 60,,►e tiv.~~~av-.~
0~ Cr~ ~ ~ -U6e r e_V ' r!&A ba1si ih m,4&f 0 jr, e - e ZI
a" ca 17+e-5 r~~ tf,lri~llwc~al ~
~ ~ e~' IrD~"~`k [Dm ~4~~''~ CY~i t~[ ilU(11 f FioIn .
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S 1- tJ K A 1-4 E C O LJ N'I' Y
L]NISIflN OF ENCIlNEERfNG AND RC]AD5 A I3iVI5i[7d+i JF "FHE PCISI.IC WQItx5 I]EPAR'S1NIEi+T
William A. Johns, P.E., Caunty Engineer
JULy 7, 1999
Windermere Real Estatel The Tupper Group, Inc.
12929 East Sprague
Spokane, WA 99216-0736
Attn: Ken Tupper
Re: Ridgemvnt Estates North e Addition
Dear Mr Tupper:
, T haue inspected the final items on the Tune 10, 1994 punch list and it appears that
all items have heen f xed to our satisfactian. Thank you for your help in
cornpleting tkiese items.
' S incerely,
Eric Atkinson
Inspector
1026 W. 6madway At+e. r SpOkane, WA 99260-0170 •(509) 477-3600 FAJf: (509) 324-3478 TDD. (5179) 324-3166
r G
,
S PC) K A N E ~ O U N T Y'
I7IVd5IC3N OE EPiGIIVEEItiIVG A1VL7 ROAQS tl D311I5IDN OF 7'HE PUSLIC WDRICS DEPAAT1HEId'f
William A. Jahns, F'.E., County Engineer
7une 10, 1991
Windermere Rea1 Estatel The T'upper Croup, Tnc
12929 East Sprague
5ppkane, Wa 99216-0736
Attn Ken Tugper
Re Padgemont Estates North 8`h Ac3dition
Dear Mr. Tupper:
Upon further reuiew and inspecfion ❑f Che projeGt, rt has carne to my attention that there zs sorne
new punchlist iterns that need to be addressed. Pnor to final acceptance, these ztems will need to
be fixed.
T Iteparr all cracked and 6raken curbfgutter, sidewalks, and aprons at curb inlets thraugh out
a31 of project Marked in pink paant
2 Grade and shape swales to praper dimensFOns.
3 Repasr heaved asphalt at 16016 E 17'h and the asphalt in front qf the h4use to the west
Asphalt was clamaged wh,en curb and gutter was removed for approaches
4. +CZean up all dirt and debns in road, curblgutter, and on sidewalks.
5. Re-groui dzywell nngs where graut has cracked Check all drywells and manholes fpr any
repair
fi. Clean out drywells and place fabnc aver openings to keep them etean until sNvales are
compleied
Thank you for your helg Fn getting the abave items resoived Pfease give ine a cail at 477-3696
❑r FRX at 324-3478 when a11 ahiDve items hawe been completed
Ssncerely,
M1
Enc Arkinsan
Field Inspectar
1
1026 W Bresadway AWe ■ 5pvkane, WA 99260-0170 •(509) 477•3640 FA][ (509) 324-347$ TBD: (509) 324-3166
.
WindermeCe
WL ndermere E2ea1 EscacelThe Tupper Graup. [nc. ~ECE1{ ~En
1~ W
JUL D 2 1999
COUUTY
JjArie~t; 1999
Spokane County Engineers +Dfffice
1 025 W. Srvadway
Spokarle, WA 99260-0i i d
Attn: Paul Lenneman, F.E.
Re: Ridgemont N. 8~' Addition
Dear Paul,
I woezld like tv request the reduction of bands fvr the cazzstructivn of this project.
Presen#ly, you have $119,000 bond.
If yvu have any questivns eanceming this request, or require any additional information,
please tee mz knaw.
Sincerely, _
T.D.C. Lnc.
Kenneth J. Tupper
President
1291-9 East Sprague 5pakane. Washingtqn 9921 b-0736 {509} 93$.1941 Fax (509) 428-4250
. •
Wndbrmere
Windermere Eteal Es[atelThe'Tupper Groug, Inc. RECEIVED
JUL 0 2 iJgy
Co"rrUJGrrvEER
1~4-,1999
Spoicane Cvnnty Engineers Office
1425 W. Braadrvay .
Spvkane, 'X:A 992460-01 i G -
P►ttn: Faui Lzn.rieman, P.E.
Re: Ridgemont N. 8`h Addition
Dear Paul,
Z wvuld lilce to request the reductian of bonds fvr the construction of this project.
Presently, you have $119,000 bnnd.
If you have ariy questivns conceming this request, ar require any additianal infarmatian,
p1ease let me knaw.
5incerely, _
T.D.C. Inc.
i{enneth J_ Tupper
President
12929 East 5prsgue 5pakane, w'ashingtan 49216-0736 {509} 928-1991 Fax (549) 928-4250
. , , ~
111!'indermere
►11+indermere Real EstacePl'he "1Lpper Group, Inc
]une 4, 1999
Spokane County Engineers Qf~'ice
1026 W. Broadway
Spakane, WA 99260-0170
Attn: Paul Lenneman, P.E.
Fte: Ridgemant N. 8th Add'atian
Dear Paul,
I would like tv request the reduction of bands fvr the constrvctivn af this project.
Presently, you haue $119,000 bond.
If yau have any questions concerning this request, ❑r require any additional infvrmation,
please let me kncaw.
Sincerely, -
T.D.C. Inc.
Kenneth J. Tupper
President
~
, 12929 East Sprague Spokane, Washingtan 99216-0736 {509} 92$-1391 Fax (501) 928-4250
t
I
~ FAX Cover Sheet
Spokane Gounty Public V1lorks
1026 W. Broadway Rvenue
;
Spakane, WR 99260-0[ 70
Phone Nta. 5[]91477-3600
Fax No. SC1'~1324-347$
(
aate Fac No. 14/-
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PLAT PuNCH LiST
OFFICE OF THE SPOKANE
COuNTY ENGINERS
i
~ PROJECT NANiE; Ridgemanf # I
INSPECTOR: AtkinsQn
dATE: 1 2-17-98
CdNTRACTOR RND/tIR SU6CONTRACT4RS:
Elier/ Bacorrt Inlond Asphalt
ITEMS. ~
1} Curb $c Gutter has numeraus crqcks on southside of 16" Ave
2} Curb 6n Rotchford St and 17" Ave hras numerous cracks.
3) Ashpalt heaving on southside of 17« Ave (where curb removed)
4) Pond @ southeast eorner vf Rvichfafd 5t. ond 16" Ave requires gr4ding and shaping,
5) Pond !L nnrthwesk corner of Rotchford 5t, and 17" Ave requires grading ond shaping.
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NSPECTQR'S SIGNAYURE:
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S IP[~] K N E C O LT N T Y
L?TVISIQN OF ERIGIlVEERING AiVL1 I20ADS • A D[V1SIC5N OF THE T'UBLIC WORTC5 DE['ARTMENT
William A. Johns, P E.. County Enguteer Denrus M Scott, P.E., I]ireetor
MemU randL1IYl
Date April 14, 1998
Ta: Terry Lightfoot Frorn: Dean Franz, P.E.
Sylvia Lightfoot Develaprn,ent Sei-vices Dept.
Praject: 1tidgemo~t ~Estates Narth, 8'h Add. 5ubject: Canstruction Inspectinn
r ~
CC: f le
The road and drainage plans for this project have recemtiy been accepted ui for construction. This project
had preluninary plat apprvval under the 1981 Rnad Standards Therefare, 5pokane Gaunty needs to
conduct the uspection and testuag work far fts project. If yau have a,ny guestaons, please see me
Thanks, Dean
14^c6 W Broadway AVe, • 5pakane, WA 99260-0170 "(5D9) 456-3600 F14X' (509) 324-3478 Ti3D. (509) 324-3165 •
~ FAX Cover Sheet ~
Sppkane Cvun#y Pualic Works
~ 9 016 W. Broadway Avenue ~
Spokane, WA 99260-0170
Phone Na. 509I456-3600
Fax No. 509/324-3478
~ _ 1 11 1 _
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FAX Cover Sheet
Spokane County Public Works
1026 W. Broadway A►venue ~
Spsakarte, 1A!A 99260-0°170
Phone f11o. 509J456-3600
Fax No. 509/3243478
mate ~ Xj ~'a - Fax [ua. SPWNIE COLIUY
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AUG-03-1996 11:02 ELLER CORRORATIDN P.62
• r(ogU
~~~~~~~~N (2
P.O. BO}Y 117
1lT1EWMAN I,AKE, WASHINGaON 99025
EHONE: 509-286-0333 FAX: 226-I332
ANBQUAL OPPORTZINflYalPLOYFsR
~ ~~LYi-RcQa4zca DBE 0 D2F7909032 ~
August 3, 1998
Terry I.ightfoot
Spokane County Engineers
1026 W. Broadway Avenue
Spokanea VVA 99260
RE: RYDGEMONT ESTATES 1VOIt'I'H 8m ADDMOlY
SAIVITARY SEdVEIt TEI.EVLSION m1TSP2ECTdOle1 It&'.QIJE.SB'
Dear Mr. Lightfoot:
The Ridgenione Fstates Nortb 8" Addition development has been pavcd and we are requesting
the final television inspecdon of the sewer lines.
Sincegely,
EI,I.EIZ CORPORATIOld
Niicha,el D. Wilson, P.E.
Project Ndanager
'1V eequeat-2
TOTAL P.02
r. c+i
ELLER CORPORPT I ON '
AUG-03-1998 11:01 ,
ju~t a fax frorna
~
M
N ELLEJb 6 ~ORPORATAON
P.O. Box 117 NEWMAN LAKE, WASHINGrQN 99025
PHC3NF-; 226-0333 v- FAX: 226-1332
D2F3309032 723-01 E1L-T.g-RC*242 C3
src equal aPpartunity eracptQyer
. ` ~ .
DATE; X7 TRvffi: ,
TC]: C OWANY~~
PHONF-_
MESSA►GE: ,
FROM: NLL'►iMER OF lPACrES TNCLUDTNG `IHIS CDt+`ER. SEEET 2- gF YaUpC) NDT
RECEIVE THE ABOVE NUMBER OF SHEETS, FLEASE CALL. 226-0333.
S ~ O T~ A N ~ C C] U N'~` Y
tL
DIvISIC33V OF ENGINEERITVG ANT3 RDAi]5 • A I]IVI5IOh1 UF THE PUBLIC WOAKS DEPARTMFNT
William A Johns, P.E., Couri#y f-ngineer Dennis M. 5catt, F.&., I7ireetflr
A1Ig11St 13, 199$
Eller Corparation
P O Box 117
Newman Lake WA 99025
Re: Ridgeanont Estates 8hAdditian
Dear Mr. Eller,
Please be adVised that the Constructian Division accepts the quality of construction of the
following system components.
AZl mainline sewer ,pipe, manholes and side services stuh-cruts located beneath
paved roadways within the platted bgundaries af Ridgerriant Estates $`h Addition.
The abflve acceptance will allow the County Utilities Department ta estabPish a one year
warranty period. Utilities will begin this period when aLl as-built drawings, U& NI
manuals, easements, and vther related system camponents have been satisfactarily
provided. Any additionai defects observed in the systern during the warranty periaa wi1L
4ae broughC tQ your attention by the Spokane UtElities Department.
Sincerely,
Eric Atkinson
Fieid Inspector
c: Utilities - Gene Repp
Vern Jacvis
Fi1e
~
1026 W Eroadway Aae. • 5pokane, WA 99250-0170 •(509) 456-3600 FAX (504) 324-3478 TI]D. (5(]9) 324-3166
OAILY lNSPECTMO'N REP9RT pg. _ ST-oi t
C)FFICE OF THE SPOKANE COUNTY ENGINEER
aate Project Name
Inspector Sfxarlr.s Prvject No. CRP1Rl❑ ' 9LEAE,093
Weather a.m. p.m. Repart No.
Time Charged Gontractor this C1ay - iIz or 1 Contractor and Jor 5u b(s) C3ther Gounty Personnel
l l,r
Equipment List Hrs. lJsed Standby
1
2 I I
3 I I
4 I 1
5 k I
g I f
Contractor Personnel Classi#icatian Number
~
2
3
d
5
6
❑Paf]ISet'.tIOfI r ar_~-1rA.. r.A :~►~Lr ~4~ r~l~~I~.~
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ITEM {}ESCRIPTION LOCA7iOhV UMITS G1TY. QTY. Tt7 aATE iMT.
NO
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SRgning checked a.m.
p.m. INSPECTOR'S 51GIVATURE ~ • _
~ J6L-1G-1956 13:55 ELLM CARPQRATIQN P.~~
~~~ORATION
P.O. BOX 117
NEWMAN LAKE: WA5BMGTON 99025
PA49NEt 509-2I6-41333 Fl4K: 226-I332
AVEQ Vi!!. oPPORa'tlArriz'EMPt,DM
I g.ULP'SAC°I42C3 d?BF. # Q2F390M2
]
July 16, 1998
Terry Lightfoot
5pakane County Engine-ers
1026 W. Sroad►uay AveAUe
Spakane! W',Fl 99260
R1E: SANITAR'Y SEWF.R TELk:TV15ON INSPEL"TI[?N REQUEST FY]R EUDGE4'IQNT
E$I'A'd ES NOR~ gm ADIDM[}N
17ear Mr. I.ightfoot: Eller Corparativn i5 requesting teleY3sion ins,pectinn af rhe sewer lines in the Ridgemont Escates Norrth
S1 Additivn develcrpment. The develvgment is 1~cated adjaeeut to W Aveaue and Rntchford 5treet.
Sincerely,
ELLER COF.PDR.ATIOEN
Michaei D. WiIsor►, P.E.
Prr,ject Manager
Tv
- 7C7TRL P.02
~ 1UL-15-1998 13:54 ELLER CQkP❑RAZIOM P•01
just a fax from:
ntl K
~ELLER CORP~RATION
P.10. BQx 117 NEVYMAN LAKE,WA5H1NGTC3N S9025
PHvNE 226-= - FAc: 226-1332
D2F3909032 223-01 FL-tIE-RC*242 r3
an erJuad oppartunity enrployer
I)ATE: 71,149 /,Pr.:F-- TII~:
TO:
caMPAvY
PHOrrE; 32 ~-3 yz.4c:-
IvE55AGE;
FRaM; N[JMSER C3f PAGES tNGLUDING THI5 COVER SHEET 2- IF YOUDONOT
RECEI~ THE ABC7VE MTMBER OF SI-iEF-TS, PLEASE CALL 22 6-0333.
After Recording Return to: Spokane Counry Engineer
Attn: Engineering Adminiscration
RESOLUTION NO. rZ 0408
BEFORE THE BOARD OF COUNTY COMMISSIONERS OF SPOKANE COUNTY, WASHINGTON
IN THE MATTER OF ESTABLISHMENT )
OF53RDAVENUE . ) RESOLUTION-
COUNTY ENGINEER'S ROAD FILE NO. 2363 ) E S T A B L I S H M E N T
No Assessor's Tax Parcel Number Assigned - PubGc Roadways
This being the day set for the hearing on Spokane County Engineer's Report on the proposed
establishment of 53R' AVENUE, proceedings for which were initiated by PRELIlMIINARY
RESOLUTION NO. 2-0278, and it appearing to the Board on proof duly made that Notice of Hearing
was published and posted in the manner and for the time required by law, and the Board after examining
the regort and maps of the Spokane County Engineer and all claims and papers on file and after hearing
all other evidence adduced at the hearing; and
IT FURTHER APPEARING that the rights of way have been dedicated as public road 65 feet
wide, and that said road is a public necessiry and the same should be opened and established as County
road. -
THEREFORE BE IT RESOLVED by the Board of County Commissioners of Spokane County,
Washington, that the hereinafter described road as reported by the Spokane Counry Engineer on the 16th
day of April, 2002, being more particularly described as follows:
53' AVENUE - 65 foot wide right of way, from Lot 2, Block 2(one foot strip) of
Laurelhurst Estates 1" Addition easterly to the west line of Madelia Street of Laurelhurst
Fstates 1 st Addition.
Located in the Northwest Quarter (NW 1/4) of Section 4, Township 24 North, Range 43
E.W.M.
and as shown by the records and maps on file in the Office of the Spokane County Engineer be and the
same hereby is established as Counry road and the same shall be known as 53RD AVENUE, Road File
No. 2363. The road supervisor of the road district in which the said road is located is hereby directed to
open and maintain the same for public use and travel.
~
BE IT FURTIiER RESOLVED that the one foot strips described as fallaws are hereby dedicated
far public raad purposes:
Ut 2, HZock 3 of Laurelhurst Additivn
APPRDVED BY THE aOI' ISth day of April, 2[~2.
c~`~''BoARv oF eauMTY comMrssIONERs
oF sro N cavrrTY, wAsxrrrGTorr
~ r ~ • a
~ ~AT E c , CH~
A'"TFST: VICKY M. DALrTU M.
CLERK QF THE BC]ARD
. ROSKELLEY, VI~~
By
DAAIIELA E~~~SflN, I)EP[JTY
. HA RRIS
2 0408
11p1resLesclr2363 532002
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l 1 B i 10.~ 3C.il IfYt~ t~~ M.u.f.
ACKNOIIL6OGBMENT i: e~ ~oam mn iecm c~i rn ~u~c
13e1 iomo mn 1- G 11 n~ i+c wis a~ .
a.¢ ar wo~ 1 s. i f e i i= mn imi c
mwnv ar mo+.K l i a~~ i,x. mrt ~na s rtmcKaro -.v
FINAL PLAT OF
a ~ne.ll~ ew M. HAY ~ Nrnn ~n r~W ~ twnwn' isw ~ e J ~IAe) SOn ~IW s eoicNpD
c x- 14mo sort ~ioi z ros~swo
w..wM aI o `
na'e E u M w(. RIDGEMONT ESTATES NORTH 8TH ADDITION
SI,00p SOJI. 011] G 16 M M.
l 0 Y] 21p00 SpJf Ib1ID E t~ M w(
III165 W~~f 1 1w Mw~b r1 ~~r1 N HIIW nr Illd/ w~ lM b~ 'w
A PLAT !N A PORTION OF
aMu n+o.Actns e i.wo amVnnns THE NW 114 OF SBC.25, T25N, R44 EWM
nMe w m a. uw iw N. DDD MOOqE ROM. SORAME N~l. YG217-2'!CG
r.. SPOKANB COUNTY, WASH/NGTON
~
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„ ■ . . .
, - . .
STERLING " - = -
SAVINGS
Association
111 N. 11Va1l o Spoklfle, Ml1A 99201'0E95
May 4, 1998
Issuing Lender: 5terling 5aving5 Assaciation
11 X N. Wall Street
~ Spakane, WA 99201
Trrevacable Letter of Credit N4. 1097
Spokane Cownty Public Raads & I)rainage
Spokane Cvunty Courthvuse
1116 W.Brnadtivay
Spokane, WA 99260
RE: KENNETH.Y_ T'UPPER. DEVEI..CIPER - RTDCEM[?NMNC]R`Y'H RTH ADDTI'r{7TS
]]ear Gentlemen:
We hereby establish aur IzxevocabIe Standby I-etter of Credit #1W in yaur favvr fvr the
accvunt of Kernrneth J. `I'ugper, 12929 E. Sprague Avenue, Spokane, WA 99206 ug to the
aggt'egate ar11ounC of U.S. *'*[7ne hundred nineteen thousand Five HDndred Do11aT5*t
0 14_500_00){ availabTe by your drafk(s) drawn at sight Qn us and presented to Sterling Savings
Assaciatian by May 4, 1999 and accornpanied by the ftallowing:
1. InVoice(s) fvr t1ie arnvunt due far unserved 1ots.
2. Sigmed staternent by an authvarized repPesentative of Spflkane Gvunty Fublic F{oads &
1]rai,nage stating fihat "The amount drawn represents che amount due fram Kenneth J.
Tupper in accordance witli a signed Service Agreernent for Ridgemont Nvrth $th
Addition dated May 4, 1998 for inwoices that are unpaid and remain unpaid.="
AIr drafts presented under the eredit must contain the clause "Drawn under Sterling Savings
Associatian I.etter of Credit IVo.107z
Any and all bankireg charges, other than Chvse of the issuing bank are for Che account of the
agp1 iGant..
• , ~
We hereby engage with the drawers, endarsers, and bvra fde hvrders of drafts drawn under and
in cvrnpliance with the temis of the Letter of Credit fihat said drafts wi11 be duly honored upvn
presentatiQn and deliVery of documents, as specifed, ta Sterling 5avings Assvciativn, 111
North Wall Street, Spokane, WA 99201 by May 4, 1999.
This Letter of Credit wi11 temiinate May 4, 1599. All drawings under this credit wifll be
govemed by the Urufornn Castams & Practice for pocumentary Credits (1993 Revision),
International Chamher of Corrmerce Puhlxcation No. 50[].
'I'his I..etter of Credit shall be automatically extended for an additional pencad of Qne year fzom
t-be present or each futu'se expiratian date urless we have notified you in writing, nvt less than
sixty (60) days before su.ch expiration date, that we e2ect nvt ta renew this Txtter of Credit.. {]ur
. notice of such election shall be sent by Caurier mail oc Certified rnail ta the abvve address.
Thas Letter of Credit is subject to the 1993 T.Truforrin Customs and Fractices fvr Dvcumentary
Credits (1993 Revision) of the International Chamber of Commerce, Publicatign No. 540.
Sin erely, ACKN[lW~EDGED BY:
KENNETH J. TUPPER
Shelley Me e
VI'1 Frivate Banking Sgvkane
Sterling Savings Association
bCKNOWTaEi?GED AND ACCEP"IED BY:
Authvrized Sigr►atory for Spokane County Pubtie Rvads & IDrainage
(Pleuse sign und returrz)
l
Raa'g. and Drainage Banding Estimate
- - - - - -
- f ~ -
PR~QJECT P1$~G RIDGEMOIV7 E57 NTH $TH ADD NAME f D BERTa fJA7E 14-Apr-98
DRAINAGE ITEMS UNITS QUA6VTITY PRICE CQST
1) Drywell - Type A EA Z 7350•00 2700.00
2} ❑rywekl -Type B EA 4 1700.00 6800.00
3) Grate - Type 1 EA 32(].00 0.00
4y Grate Type 2 EA 2 345.00 690 (7I7
51 Grate - Type 4 EA 5 3000C? 780000
61 Baclcfill For aW CY 220 17 25 3795,00
71 Cancrere Inlet EA 800.00 0.00
8} C.M. Pipe 70" pia. tF 2400 0.00
9} C.M Pipe 12" Dia, f.F 27.00 000
10) C.M Pipe 3 5" Dia. LF 29.00 0.00
11) C.M. Pipe 18" Dia. LF 30.00 0.00
12) Precsst Manhole EA 150000 0.00
131 Solid lid E,4 32500 0.00
14J Ditch{208 Excavation CY 265 1000 2650.00
15) Pond Excavation CY 10.00 000
16) 5od SF 070 fl DO
NQN STANDRRD DRA1NAGE ITEMS
1 y Catoh Basin Type 1 EA 2 80000 1600.00
2) Metal Frame Type 7 EA 2 150.00 30000
31 12" AD5 fV-12 . LF GO 18 ❑Q 108000
41 000
E7FiA1NACE SUBTDTAL 2141 5.[}t7
76) Morruments EA 5 1$5,00 925.00
77) Barncade LF 35 DO 0,00
18! 5ireet 5igns EA 2 9000 18000
OTHER SUBTOTAL 110500
GRADING, SURFACENG, CURB, ANR SIbEWALK
191 RQUgh Grade CY 1622 1000 1622000
20l Top Cvurse CY 8667 75.50 13433 85
21) Base Course CY 15.5{] Q.❑d
22} Asphalr Concrete Tans 6542 4600 25493 20
23] Cur6 Type A LF 1859.3 7.50 14019.75
24) Curh Type B LF 1187 B 50 10089.50
251 Curh Type R LF 8 50 0.00
26) Sidewalk SQ YD 725.4 17 50 12694 50
NON-STAfUDAR[J R(7A❑ ITEMS
7 y Saw Cut And Remove Asp(halt ❑n 16zh L 5000❑D
2) 000
3) t7.0[3
GRADfNG AN❑ SURFACIiVG 56956 80
CONS7RUC7ION TO7AL 119,47080
U5E' 719,500.00
BOND ESTIMATE
- - - - - - -
Ridgemont Estates North, 8th Additian Job, ldo P-1684G aATE 13-Apr-98
- - - - - - - - -
DRACNAGE ITEMS IJNITS Q[JANITY PRICE CDa7
1) Orywell - Type A EW 2.00 1250,00 2,50000
2} Qrywe94 - Type B Ep 4.00 1650.00 6,600.00
3) Grate - Type 1 EA 315.00 000
4} Grate Type 2 EA 2.00 340.00 6$000
5} Metal Frame & Grafe Type 4 EA 6.00 5€7000 3,000.00
6] Backfisl For DW CY zzo oa 16.00 3,520.00
7} Concrete Inlet EA 0.00 75000 0.00
8} C.M. Pipe 10" Dia. LF O.a@ 23.00 0.00
9} C.M. Pipe 12" Dia. LF 000 27.00 0.00
10} G.M. Pipe 15" Dia. LF 0 04 27.80 0.00
11 }C.M. Fipe 18" 'L7ia. LF 0.04 31.50 0.00
12} Precast Marrhale EA 0.00 1500.00 0.0[]
13} 5olid lid EA 000 310,00 0.00
14) DEtch1208 Exca^vatiQn CY 265.00 10.00 2,650.00
15} Sod SF 0.00 0.70 fl O[l
- - - - - - - -
QTi-6ER ❑RAINAGE ITEMS
- - - - - - - - -
1] Catch Basin Type 1 EP+ 2.00 800.00 1,6(]0.00
2) Metal Frame Type 1 EA 2.00 150.00 300.[}0
3) 12" RDS n-1 2 LF 60.00 18.00 1,[18000
a.OR] 0.00
0.0(7
- - - - - - - - -
DRAINAGE 5L1BTC]TAL 21,930.00
- - - - - - - -
16} Monuments EA 185.04 0.00
17} 6arrieade LF 33 60 0.00
1$} Street Signs EA 85.04 0.00
~ .___o---------------------------------________________s__W_ ---_-_._--__-__-z__
OTHER SIJBTC]TAL €I.OQ
GRAaIEVC;, SURFACING, CC1RB, AND 51DEWALK
19} Rough Grade CY 10.00 00
20] Tap Course CY 16.00 0.00
21) Base Course GY 16.00 0.04
22] Asphalt Concrete Tans 44.40 0.00
23] Curb Type A LF 7.00 0.06
24] Curb Type 6 LF 5.00 0.04
25} Curb Type R LF 8.00 000
26} 5idewalk 5Q YD 16.70 0.00
- - - - - - -
NOry-STANDARD RC?AD ITEMS
- - - - - - - - - - - - - -
1 } D.fl0
~
2) 000
3) Q QC]
4) D.L30
- - - - - -
GRAUING AND SURFAGING 0.00
- - - - - - - - - - - - - - - - - - - - - -
GRAryQ TOTAL 21,930.00
OFFICE dF THE COUNTY 7ENGIA'fE]ER
SP4KANE C4UNTY, WASHINGT'[aN
TO: CHAb CaLES
FRdM : DAVE BERTO
DATE : May 13 , 1998
SiFE1JECT: BQND ITEMS P1684G RII7GEMONT ESTATES NCRTH 8Tx ADD
The band for the abave mentioned project is far the
following items:
1) All the items orr the approved road and drainage plans
with the exception of the sad for the "208" Swales.
STORMWATER DRAINAGE CALCULATIONS
FOR
RIDGEMONT ESTATES NORTH 8TH ADDITION
NW 1/4 of Sec 25, T. 25 N., R. 44 E. W.M
Spokane County, Washington
March, 1998
Prepared by:
Simpson Engineers, Inc.
North 909 Argonne Road P;;8Llt ROCIlt~EN`r
Spokane, Washington 99212 SPOKANE COUfvTY ENGINEER'S OFFICE
oRiGiNAL
PRaECT #
SUBMITTAL
The design improvements shown in this set of plans conform toRETURN TO COUNTY ENGINEER
the applicable editions of the Spokane Counry standards for
road and sewer construction and Spokane County guidelines for
stormwater management. All design deviations have been R E 1 V E D
approved by the Spokane Counh~ Engineer. I approve these
plans for construction MAR 18 1998
' SPOKANE COUNTY ENGINEER
1. Surtunary
II. Stormwater Drainage Calculations for Basins A, B, C, D, E, and F of
Ridgemont Estates North 8th Addition 111. Attachments: W• MCM~
* Soils Map and Tables o~w"syiti
* Roadway Surfacing Design `h ~
* Curb Grade Calculation Sheet: 16 Avenue A4s ~
:
Z~B
Storunvater Drainage,repuns113 519 ~SfONqL £`G~
~
' ~ EXP OATE 90/4/ ~ I
Starmwater Drainage Report; Ridgemont Estates Nvrth 8th Additaon
I. SUMMARY:
The devetoprnent is dividsd into six (5) basins; A, B, C, D, E, and F. See Dra.inage Map for itidgemont Estates
Narth 8th Additian. Each basin is camposed of two suhareas, 1} gcass lawns, a.nd 2) imperviaus raafs,
driveways, and asphalt paved streets Stormwater flvws averland aerass ravfs, grass lawns, and driVeways and
inta grass drainage pvnds. Stamnwater fram asphalt stre.ets flaws along the cur6 gutters and into the grass
drairiage ponds thrvugh curb vpenings [acated at low pQirns in the curb profiIe.
The grass percalatian areas (drainage pvnds) were calculatei to hold the Srst 112" of rainfai1 runvff vver the
asphalt street areas.
Figure 2, page 6-3, af the "Guidelines fQr Stormwater Managament'", hy 5pokane County Engineers, was used
for rainfall intensity and duration occwring at a10-year storm frequency.
The Rational and Bowstring Methvds were used tv ccallculate tne geaic stormwater runofF for each basin, and the
type and numher of dryvvells needed for e.ach basin based vn the storage cagacity afthe pond.
In accordance with °'Sofl 5uruey, Spakane Caunty, Washing#un", 1968, #he soU is categorrized as:
j GmB, Gazrison uery gravelly loazn, similar #o Gauxisan graVelly laam, exeept that the .
surFace 3ayer is very graveUy.
II STORMWATER DRAINAGE C AI.CUI.ATIONS.
Basin A
Area .
Tota1= 54,482 sq. ft. - 1.2507 acre
Pavement = 16th Avenue = Sta. 8+70 to 17+70 =(900')(20') = 18,000 sq. ft.
Rotchford St. = Sta. 5+43.72 to 6+50 =(106.28')(18') = 1,913 sq. ft. curb radii fillets = 2@1(20')(20') -(n/4)(20')2} = 172 sa. ft.
20,085 sq. ft. - 0.4611 acre
Sidewalk = 16th Avenue / E.R. 9+08 to E.R. 17+32 =(824')(6') = 4,944 sq. ft.
curb radii = 31.42 + 32.08 =(63.50')(6') = 381 sa. ft.
5,325 sq. ft. - 0.1222 acre
Driveways = 4 driveways at 1,000 sq. ft./house = 4,000 sq. ft. - 0.0918 acre
Impervious = 20,085 sq. ft. + 5,325 sq. ft. + 4,000 sq. ft. = 29,410 sq. ft. - 0.6752 acre
Grass Lawns = 54,482 sq. ft. - 29,410 sq. ft. = 25,072 sq ft. - 0.5756 acre
Stora.ge Reauired: •
a) "208" Storage Required =(20,085 sq. ft. )(1/2"=12 in. per ft.) = 837 cu. ft.
b) Bowstring = 1,010 cu. ft. + 1 Single Barrel Drywell, Type A(0.3 cfs out)
Storaee Provided:
Pond, 6" deep; (100')(17')(0.5') = 850 cu. ft. > 837
Pond, 8" deep; (100.68')(17.68')(0.67') = 1,192 cu ft. > 1,010
103.36 x 20.36 ft 2.68 ft.
/
i. 2.0 ft. i /
102 x 19 ft.
4:\6"=0.5 ft. 8"=0.67ft. /4:1
,1
~ 98 x 15 ft. Pond Floor ~
(102 + 98)/2 = 100' and (103.36 + 98)/2 = 100.68'
(19 + 15)/2 = 17' and (20.36 + 15)/2 = 17.68'
RAT9ONALFORMULA HYdRaL4]GY & BOU'11STR6NG METHC7C3. f]ETENTfOIV BASfN DE51GN
ORo4l[dAGE BRSIN RNALYSIS far 10 YEAR STORM EVENT
Date: 13125157 Project Name Ridgemont Estates North Sth Addihon
aesign° }(VIIM 5ite Lacation: Sixteenth and Rvtchford
oisk Ftie 137 1lsovvstmgll{1113519 wh1 Project Numher. 13519
Basin fVame: A Basin DescriptiorrA
SLiBAREAS: TkNEE C7'F CC7NCENTRATION (minutes);
Qescnptionqcres ~ C_ A'C `Tc~[overlanci flow]i--- Tc (guiter flaw)
Asphalt Pavement [].451 90 0.415 Ct = 0.15 L2 v 514
Sidewalks 0.129 0.90 0.11 Z9 = 0.157
Driveways 0.092 0.90 0.0825 L1(A) = 37 T2 = 40
C;rass Lawns 0.576 0.15 0.[]863 N(A) - 0.4 B= 0
S(A) = 0.01 n = 0.016
s ~ 0.011
Tc (A) = 3.01 d = 0.2125
To#al Basin Area, scres = 1.251
Gornpnsite Runoff CaefFicient = I].555 L'~ (B) 0 Tc {gut.} 3.58
Comhined (Area ` Runafif Coefficient) _ 0.69 N($) _ ~ Tc(A+B) 3.01
S(B) _
Tc total 5.99
Tc (B) = 0.0 intsnsiiy 2.81
Ho9ding 18.31
"208" DRAII+fAGE PARAMETERS Q(est) 1.95 c.f.s
Impenrious '208" Area = 20085 sq. ft.
"208" Voiume Prorrided = 882 cu. ft. Time of Goncentration = 6.95 cninutes
5tarm Storage Pravided = 1220 cu. ft.
PER!( a15CHFlFtGE, 14 YEAR STORM:
BO1lIISTR[NG CRLGULATIL NS Q _ C ' I ' A = 1.95 C.F.S.
~ #1_ _ #2#3 #4---~.-#5 _ #6#7
Tirrte Time Intensity ❑ dev. V in V out Storage
Inc. Inc, NIJMBER and TYPE of aRYWELL,S PRQPOSEp:
(min.) (sec.) (inJhr) (cfs) (cu. ft.) (cu. ft.) (cu. ft.)
(s1=60) [A•c•#3] (,utr.-#z) (9546) i SingEe-8arrel (5pokane Coun#y Type A)
0 Dauble-Barre! (5pokane CountyType B)
r 8.99 419.22 ~281 1.95 1094 125 76 968
{Jufflow Pravided 0.3 C.t.s.
5 300 3.18 2.27 887 90 797
10 600 2.24 1.55 1154 '180 974 _
15 900 1.77 1.23 1280 270 1010
20 9200 1.45 1.01 1351 360 991 "248" TREATMENT VvLIJME
25 1500 1.21 63.84 1379 450 929
30 1800 1.04 072 1402 540 862 Required G.P.A. ponding vofume:
35 2100 0.91 063 1416 630 786 lmpen►iaus "208" Area x1F2" = 837 cu. ft.
40 240{] 0 82 4.57 1447 720 727 valume pravided at 6" depth = 882 cu. ft.
45 2700 0.74 0.51 1450 814 650 OK!
50 3000 0.68 0.47 1483 900 583
55 3300 0.64 044 1529 990 539
60 3600 O.61 0.42 1584 1080 504 57ORM STORAGE VOLLIME:
65 3940 0.60 4.42- 1683 1170 513
74 4200 4.58 0.40 1748 1260 488 Maximurca starage required = 1010.5 cu. ft.
75 4500 0.56 0.39 1804 1350 454 vafurne provided at 8" depth = 1220 cu. ft,
80 4800 0.53 0.37 1818 1440 378 QK!
85 5100 0.52 0.36 1892 1530 362
90 540[] 0.50 0.35 1923 1620 303
95 570[] 0.49 0.34 1987 9710 277 ❑RYWELL REQilIREMENTS:
100 60(}0 0.48 0.33 2[]46 1800 246
I Singie (TYPe A) 0 Double(TYPQ B)
G u~k ; ~r ~ ~ ~~a ~N~ i ~d ~ 31 1 ~CWM
~ ~ ~ ► P4
-
- - i=-- ~ _ _
- - - - - - - -
_
- - - -
- - -
1771--7 -Fl~- a= o.v' -
Wki -AIS • - • - -
_ _ _ _ . • - -
- •
' . _!~u~ter ~rlow _w►d~9~ ~ °1 .~-~r ~ 1i' - --~pka
- • j- -
~
~
~
_ .._.F~___ - - _ ~
l
~ - - - - - - - - - _ ~ _ . - - ~ _ _..T-
- - - - - - - _ - - - - - -
~
~
f - - - - - - - - - - -
- - - - - - -
E
I
- E .
i .
_v.~- ~ --T- __r._.T~
~
5torrnwater Drainage Repart
11, STQRMWATER DRATNAGE GALCULATI4NS: (cantinued)
Basin B
Area
Total = 166,122 sq. ft. - 3.8135 acre
Pavernent = 17th AVenue i 5ta. 3+95 to 8+89 =(494')(1$') = 8,892 sq ft. - 0.2041 acre
Rovfs =11.5 rnvfs at 2,000 sq ft.lhouse = 23,000 sq. ft. - 0.5280 acre
Driveways ~6 driveways at I,000 sq. ft.lhause = 6,000 sq, ft. - 4. 1377 acre
Impervivus = 8,892 sq. ft. +23,U44 sq. ft. + 6,006 sq ft=37,892 sq. ft. - 0.8699 acre
Grass Lawns = 166,122 sq ft. - 37,892 sq. ft. = 128,230 sq. ft. - 2.9438 acre
Storaize Reauired
~
a) "208" Storage Requared =(8,892 sq. ft. )(112"=12 in. per ft.) = 371 cu ft.
b} Bowstring = 1,005 cu ft. +2 Double Barrel I]rywells, Type B(2 0 cfs out)
Storaee Pravided•
-t a-5
PC7I1d, 6'Y d~ep, (29')(50')(0 5') =,PlfCld. ft. 7 371
PL7LId, deepa (29.68')(50 68')(0 67') _ 1p007 C13. ft 7 1,005
32 36x53.36ft ' 2 68 ft
,j
r .
i. 2-0 ft- _o
31 x 52 ft
,
4:1 ' 6"~0.5 f}. 8"=0.67ft 4:1
/
27 x 48 ft. Pand k'lovr
~
{31 + 27}l2 = 29' and (32.36 + 27)12 = 29 68'
(52 + 48)f2 = 50' and (53.36 + 48)12 = 50 68'
RATIONAL FORMULA HYDROLOGY & BOWSTRING METHOD: DETENTION BASIN DESIGN
DRAINAGE BASIN ANALYSIS for 10 YEAR STORM EVENT
Date: W25/97 Project Name: Ridgemont Estates North 8th Addition
Design: KV1lM. Site Location: Sixteenth and Rotchford
Disk File: 8713owstmg110X13519.wb1 Project Number: 13519
Basin Name: 6 Basin Description 6
SUBAREAS: TIME OF CONCENTRATION (minutes):
Description Acres C A`C Tc (overland flow) Tc (gutter flow)
Asphalt Pavement 0.204 0.90 0.1837 Ct = 0.15 L2 = 0
Roofs 0.528 0.90 0.4752 Z1 = 0.172
Driveways 0.138 0.90 0.1239 L1(A) = 450 Z2 = 36
Grass Lawns 2.944 0.15 0.4416 N(A) = 0.4 B= 0
S(A) = 0.016 n= 0.016
s = 0.01
Tc (A) = 11.70 d = 0
Total Basin Area, acres = 3.814
Com posite Runoff Coefficient = 0.321 L1 B) = 0 Tc (gut.) 0.00
Combined (Area' Runoff Coefficient) = 1.22 N(~) = 0 Tc(A+B) 11.70
S(B) = 0
Tc tota I 11.70
Tc (B) = 0.0 Intensity 2.08
Holding 0.00
"208" DRAINAGE PARAMETERS: Q (est) 0.00 c.f.s. .
Impervious "208" Area = 8892 sq. ft.
"208" Volume Provided = 725 cu. ft. Time of Concentration = 11.70 minutes
Storm Storage Provided = 1007 cu. ft.
. PEAK DISCHARGE, 10 YEAR STORM:
BOWSTRING CALCULATIONS Q= C' I' A= 2.55 C.F.S.
-
#1 #2 #3 #4 #5 #S #7
Time Time fntensity Q dev. V in V out Storage
Inc. Inc. NUMBER and TYPE of DRYWELLS PROPOSED:
(min.) (sec.) (nJhr) (cfs) (cu. ft.) (cu. ft.) (cu. ft.)
011•M (A•c#M (ouuet.•s2) ($sM 0 Single-Barrel (Spokane County Type A)
2 Double-Barrel (Spokane County Type B)
11.70 701.73 2.08 2.55 2395 ` 992
Outflow Provided 2 c.f.s.
5 300 3.18 3.89 1565 600 865
10 600 2.24 2.74 2205 1200 1005
15 900 1.77 2.17 2468 1800 668 20 1200 1.45 1.78 2554 2400 154 ' "208" TREATMENT VOLUME:
25 1500 1.21 1.48 2576 3000 -424
30 1800 1.04 1.27 2596 3600 -1004 Required G.P.A. ponding volume:
35 2100 0.91 1.11 2605 4200 -1594 Impenrious "208" Area x 12" = 371 cu. ft.
40 2400 0.82 1.00 2649 4800 -2151 volume provided at 6" depth = 725 cu. ft.
45 2700 0.74 0.91 2663 5400 -2737 OK!
50 3000 0.68 0.83 2696 6000 -3304
55 3300 0.64 0.78 2773 6600 -3827
60 3600 0.61 0.75 2867 7200 -4333 STORM STORAGE VOLUME:
65 3900 0.60 0.73. 3040 7800 -4760
70 4200 0.58 0.71 3152 8400 -5248 Maximum storage required = 1005.1 cu. ft.
75 4500 0.56 0.69 3249 9000 -5751 volume provided at 8" depth = 1007 cu. ft.
80 4800 0.53 0.65 3270 9600 -6330 OK!
85 5100 0.52 0.64 3399 10200 -6801
90 5400 0.50 0.61 3452 10800 -7348
95 5700 0.49 0.60 3563 11400 -7837 DRYWELL REQUIREMENTS: .
100 6000 0.48 0.59 3666 12000 -8334
0 Single (TYPe A) 2 Double (TYRe B)
RATIC]NAL FORMULA HYDR(]LQGY Project Name: Ridgemonf Estates North 8th atiditian
0RAINAGE BASIN ANALYSIS Rroject Number; 13519
10 YEAR S'TORIVi EVENT Desigrre KWlVk
Oate:
Basm Name• Bpavt
Basm aescriptivr 8pavt
RAINFALL INTENSiTY-QIJRATION SU6AREAS.
10YEAR STQRM FREQUENCY
Descriptivn Acre! C A*C
Time Time 5tarm
Incr. fncr. Iratensity Asphalt 0.204 0.90 0.183E
(mirsutes) [secands; (in !F¢r.)
Tr- = 5.00 300.00 3.18 = intensity ~ rC
5 300 3.18
10 600 2.24
15 900 1.77 Tv#al Area, acre: 4.20
24 1200 1.45
25 1500 1.21 Composite Goefficient (C; e.90
30 1800 1.04 '
3:5 2100 0.9,1
40 2400 0.82
45 2700 0,74 TINfE OF CONCENTRATION (minutes)•
50 3000 0.68
55 3300 064 Tc (oVedand flaw) Tc (gutter flrnw)
60 3600 47.81
65 3900 0.60 Ct = 0 L2- 428
70 42410 0.58 Z1 = 0172
75 4500 0.56 Ll (A) = 0 Z2 = 36
80 4800 0.53 N(A) = 0 13_ 0
85 5100 4.52 S(A) = 0 n = ❑016
90 5400 0.50 5 = 0.0175
- 95 5700 0.49 Tc (A)= 0.170 a = 0.129
100 sooo 0.48
L1(B) = D 7c (gu) - 3.67
Explana#ion: S~g} = ~ Tc{A+B} a.~QQ
Tc (total) = Tc (avedand) + Tc (gutter) Tc(tot.) 5.00
Tc (B) = 0.0 fratensity 3.18
Tc (vverland) = Ct*(LI*Nrs^a 5)110.6y
Ct = 0.15 = Coefficient frar overiand flow
Li = Length of avedand flow
N= vuerland frictEVn factor (.4 r awg. grass cover) Cafculated Channe! Flvw C)ata.
S=average slvpe v# overland flow
A = 0.301 Sq. Ft.
Tc (gutter) = Length {ft.}1 VelQCity (ft./sec.)16{J WP = 4.7767 Ft.
L2 = Length of flow in principat cFiannel R= 4.0630 Ft.
Z1 = inverse of crvss slvpe of backslape of channel ' V= 1.94 Ft.ISec.
Z2 R inverse of cross slvpe of foreslope of channel Tc{gu} = 3 67 Minutes
B=Bvttom width of gutter vr ditch Q(est) _ 0.58 C.F.S.
n= Manning's friction factor (0.016 fvr asphalt) _
s = longitudinal slope of gutter Halding 15.25
d = depth of flow in gutter (estimat$, check ►rvl flvw)
Area = d*8+d"212*(Z'1+Z2)
W.P. = g'`d}{11sin(atn(11Z1}}fIlsin(atn(ifZ2))) Gafculated Peak Discharge, 10 Year Storrn:
HydrauGc Radius = R = Areal Wetted Perimeter
Velocity= 1.4861n*R1.667*s11.5 Q=C*i*A 0.58 C.F.S
Flow = Velocity`Area Q(est.) 0.58 C.F.S.
?,'~~gerAoV-~ ~~~~~e-S t~~ I(*
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5tornwater I3rainage Report
. II. STt]RMWATER I)RAINAGE CAI.CULATIONS' (cantinued)
Basin C
Area
Totai = 10,327 sq. ft. - 4.2371 acre
Pavement = Rotchford 5t.1 Sta. 3+30.2I ta 5+43.72 =(213.51')(18') - 3,843 sq. ft. - 0.0882 acre
l7riweways = 1 driveway at 1,004 sq ft.ihvuse = 1,E100 sq. ft - 0.0230 acre
Impenrious = 3,$43 sq. ft. + 1,000 sq. ft. = 4,843 sq+ ft - 0.1112 acre
Grass Lawns = 10,327 sq. ft- 4,843 sq. ft. = 5,4$4 sq. ft. - 0,1259 aGre
Starap-e Reauired:
a} "208" Storage Required =(3,843 sq. ft- )(112"- 12 in. pes ft}= 160 cu. ft. .
b) Bowstring = 62 cu, ft. +I SinglE Baaxel i]ryvs+ell, Type A(4 3 cf's out)
5torage Pravided.
Pond, 6" deep; (72')(57){0.5°} = 180 cu. ft. > 160
Pvnd, 8" deep, (72.68')(5.68')t0.67') = 276 cu. ft. • 62
_ 75.36 ft. x $.36 ft.
w i 2.58 ft
- -
2[lft
~ 74ft. X7 ft. ~
4,1 5" = 0.5 ft. S" = 0.67 ft, / 4' 1
f`
I 70 ft. x 3 ft. Pond Flaar
(74 + 70)12 = 72' and (75.36 + 74)!2 = 72.58'
(7+3)12=5' and (836 +3)12=5.68'
RATin[VAL FQRMULA HY❑ROLC3GY & 80VIlSTR1NG METH{30: f3ETENTIDN BASiN ❑ESIGN
❑F'u41NAGE BASIN ANALYSIS for 10 YFAR STORM EVENT
Date: 11125197 Pralect Name. Ridgemant Es'tates North Bth Addition
Design: iCWM Site Lvcabon• Sixteenth and Rntchford
o~~kFis F716awstmg170113519wrb1 Proyect fVumher: 13519
6asin Riame: c 6asin Description G
SUBAREAS. TiME c7F C4NCEhk7RATi(7N (minutes):
==W~~~=--------___--_.--------- ~
Descriphan Acres C°---- p - ~Tc (averfand flaw) 'fc (gutter flow)
Asphait Paverrtent 0.088 090 0.0794 Ct = 0.15 L2 _ 144
❑riveways 0.023 090 0A207 Zi = 0.172
Grass LawRS 0.126 0.15 00189 L1(A) = 37 Z.2 = 36
_ N(A) _ 0.4 B_ 0
S(A) _ 001 n = 0.416
s = 0.005
Tc (R)= 3.01 d = 0.138
Tatal 8asin Area, acres = 0.237 _
Camposite Runoff Coe~ficient = 0.542 L"f (B) = 0 Tc {gu#.} 22'f
Carnbinec! {Area + Rurroff Coefficient} ' 0.12 N(B) = Q Tc(A+B) 3.01
S(B) = D
Te totai 5.22
TG (B)= 0.(} lntens`ty 3.14
Holding 5.13
"208" DRAINAGE PARAMETERS: _ Q (est) 0.37 c.f.s.
Impervious °208" Area = 3843 sq. ft.
"208" Vgiuene Provided = 180 cw. ft. Time of Cancentrafion = 5.22 minutes
Storm Stnrage Provided = 276 cu- ft-
PEAK DISCHARGE, 10 YEAR ST[]RM:
BOWSTRING CALCULATlaNS Q _ C " I " A = 0 37 C.F S.
--#1#2--_.--t-3--•~-#4--.-~_#5 ----#6-----#7
7ime Time Intensi#y Q dev. V in V out Starage
knc. Inc. NUMBEFt and NPE of DR'YWELLS PROPOSED;
(rnin.) (sec.) (in.lhr) (cis) (cu. ft,) {cu. ft.} (cu. ft.)
01•60] tR•CV3l *.'92] [9546] 1 Single-6arre] {Spa'Icane Couniy Typs A}
Q Double-Barrel (5pakane County Type
5.22 312.98 3.14 0.37 157 93.88 63
Dutflaw Provided 0.3 c.f.s
5 300 3.18 0.38 152 90 62
10 600 2.24 0.27 18$ 180 8
15 900 1.77 0.21 212 270 -58
- 2{] 12170 1.45 017 225 360 -935 "208" TREATMENT VOLLIME:
25 1500 1.21 0.14 231 450 -239
30 1800 • 1.04 0.12 236 540 -304 Requieed G.P A. pondng volume.
35 2104 0.91 0.11 239 630 -391 fmperaious "20$" Area x 112" r 1E0 cu. ft.
40 2400 0.82 0.14 245 720 -475 volurne provided at 6" depth = 180 cu. f#.
45 2700 0.74 0.09 247 810 -563 (]K!
SQ 3000 0.68 0.08 251 900 -649
55 3340 0.64 0.08 259 990 -731
60 3600 0.61 0.07 269 1080 -811 STORM ST❑RAGE l1C]LUME:
65 3904 0.60 €3.07 285 1170 -884
70 4200 0.58 0.07 297 1260 -963 Maximum storage 6equireei = 52.08 cu. ft.
75 4540 0.56 0.07 347 1350 -1 f143 voEume prvvided a# 8" depth = 275 cu. ft.
80 4800 0.53 006 309 1440 -1 i 31 OK!
85 5100 0.52 0.06 322 1534 -1 2E?8
90 5400 0.50 D.(}6 328 1620 -1292
95 5704 0.49 (l.06 338 1710 -137'2 DRYWELL REQLIIREMENTS;
100 6000 0.48 006 349 1800 -1451
9 5ingle (TYpe A) 0 aauble (TYPe B)
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Stormwater Drainage Report
11. STDRMWATER DRATNAGE CALCULATTt]NS: (cor►tinued)
Basin D - A,rea -
Total = 59,985 sq, ft- 1.377 acre
Padement =1Tfih Avenue f Sta. 3+40 to 8+$9 = (589')(18') = 10,602 sq. ft
R,vtchfnrd Street 1 5ta. 2+00 tm 3+30.21 =(134.21')(l8') = 2.344 sa. ft.
_ I2,946 sq. ft ti0.2972 acre
DriverNays = 5 driueways at 1,000 sq, ft.lhause ~ 5,000 sq. ft. - 0.1148 acre
HQU5e5 = 4hDU5eS at 2,000 sq, ft./house = 8,000 sq, ft. - D.1837 acre
Irnperviaus = 12,946 sq ft. + 5,000 sq. ft. + 8,4700 sq ft. =25,946 sq. ft- 0 5956 acre
Grass Lawns = S9S985 sq ft. - 25,946 sq. ft. _34,d39 sq. ft 0.7814 acre
5taracze Reauired: •
a) "248" Storage Required = (12,946 sq- ft- )(112"- 12 in. ger ft } = 539 cu. ft.
6) Bvwstring = 535 cu. ft. + 1Dvuble Barrel I]rywell, fiype B(1.4 cfs caut)
5tarage Prarided:
Pona' deep; ((30')(15') + (2l')(25'))(0 5°) = 488 cu. ft.
(30+15+30+10+21+25+21)(0.5 ft.~) = 75 cu_ $t.
564 cu. ft. > 539
Pond, 8" deeg; ((30')(15') +(2k')(25'))(O.b7') = 653 cu ft
(30+15+30+10+21+25+21)(a.9 ft.x) = 136 cu. ft_
789 cu. ft > 535 '
30' 21'
15' I S'' Pvnd
aottom
'
30'
25' 25'
10,
21'
Stormwater Drainage Repart
II STaRMWA'I'ER DttAINAGE CAL.CUI.ATI(]NS: (cvntinued)
Basin D (cantinued)
2.68 ft.
ef.,
2.0 ft, f ~
4 1 'l.T" - V 5 ■L. 847 - 0.67 ft. 4. L
~
(112)(2-0')(0 5') - 0-5 sq-ft- (112)(2.68')(4.67') _ (3.9 sq. ft.
FZATIONAL FQRMUEA HY❑RaLflGY 8, BC7V1l5TR[AEG METHOO: DETENTfON BASiN DESIGIV
DRAiNAGE BA51N AN,ALYSIS fvr 14 YEAR ST{7RM EVENT
aate. 4sEOSr98 Project Name: Ridgemont Estates North 8th Addibon
Design; KWM. - 5fte Location• Sixteenth and Ratchfnrd
[7;s3cFite. 97.16awstmg11CS113519.wh1 ProleefNumber: 13599
BaSin Rlame: Q Basin Description D
SUBAREAS. TIME C7F CONCENTRATION {rninvtes};
❑escrip6on ,~cres r +C ~ A`C Tc~(overland flaw) .--Tc (gufter flow)
Aspha[t Pavernent 0.297 0.90 0.2675 G# = 015 L2 ~ 534
Drnreways 0.115 4.90 0.1033 Z1 ~ 0172
Hauses 0.184 0.90 0.1653 L1 {A} = 37 Z2 = 36
Grass Lawns 0.781 4.15 0.1172 N (A) = 0.4 B = 0
5(A) = 0 01 n = 0,016
s = 0.016
Tc (A) = 3.49 d = 4.2435
Tatal Basin Area, acres = 1.377
Cornposite FZunoff Gaefficient = 0.474 L1 (8) = fl 7c (,gut.) 3.13
Comb9neti (Area ' Runvff Caefficient) = 0.65 N(B) _ 0 Yc(A+6) 3:09
S(B) _ 0
Tc total 8.14
Tc (B) ~ 0 Ira#ensity 2.97
Hvlding 19:03
°208" dRAINAGE PARAMETERS: Q (est) 3.04 e.f.s.
lmpen►ious "208" Area = 12946 sq. R.
"208" Volurne Providsd = 564 cu. f#. 7ime of Concentrativrr = 6.14 Eninutes
Storm 5torage Providecf = 789 cu.ft.
PEAkt diSCHARGE, 10 YEAR STDRM:
8OW5TRING CALCULA~~ON5 Q= C* F* A° 1.94 C.F.S.
___~~__A__
.
#1 #2 #3 #4 #5 #6
Time Tme Int$nsit+y ❑ dev. V in V out Storage
Inc. dnc. NUMBER and 1'YPE of ❑RYWELLS PROPO5ED:
(min.) {sec.) (in.1hr) (cis) {cu. ft.) (eu, ft.) (cu, ft.)
(s1160) (A•c'83) [our.-02) (#54*) 0 Sin$le-Barrel (5pokane County TYpe A)
1 DoubEe-Barrel (Spokane Caunty Type B)
6.14 368.55 2.97 1.94 957 368.55 "588
Outflow Pravided 1 c.f.s.
5 300 3.48 2,08 835 300 535
10 600 224 1.45 1061 600 461
15 900 1.77 1.16 1186 900 286
20 12E10 1.45 0.95 1256 1200 56 "208°" TFiE,ATMENT VQLLJME;
25 1500 1.27 0_79 1285 1500 -215
30 1804 1.D4 4.E8 4308 1800 -492 Requfred G.PA pnnding volume:
35 2100 {}.9l 0.59 1323 2100 -777 Impervious "208" Area x 412" = 539 cu. R.
40 2400 0.82 0,54 1353 2400 -1 U47 valume pravided at fi" depth = 564 eu, ft.
45 2700 0.74 0.48 1356 2700 -'I 334 OK!
50 3000 0.68 4.44 1388 3000 -1612
55 3300 0.54 0.42 1432 3300 -1868
60 3600 0.61 0.40 1485 3600 -2115 STDRM STOR+4GE VOLL1ME:
fi5 3900 0.60 0.39 1578 3904 -2322
70 4200 0 58 0.38 1639 4200 -2561 Ma)dmum stvrage rsquired ~ 535 2 cu. ft.
75 4500 0.56 0.37 1592 4500 -2808 volurne pror►ided at 8" depth = 789 cu. ft.
BD 4800 0.53 0.35 1705 4800 -3095 OK!
85 5104 0.52 0.34 1775 5100 -3325
90 5400 0.50 0.33 1805 5400 -3595
95 5100 0.49 0.32 1865 5700 -3835 DFtYWELL REaUiREMENTS:
100 6000 0.48 0 31 1921 6000 -4079
0 Single (TYRe A) 1 Doubie (TYPe B)
_ ernvr,-k es~~~~s NotiA sTH i~~►~;~~ lzi tG
- er ~lv~ '~i~,~~►s _ ?/s/i$
~a~►n D~
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Stornnwater Drainage Report
II. STQRMWATER DRAIVAGE CALCLTLA,TIC3NS. (cantinued)
Basin E -
Area - `
TOfiAl = 86,703 5q ft. 1.9904 aGPe
Pavement = Rotchford 5treet 1 Sta 2+00 to 5+43.72 =(343.72'){ 18'} = 6,187 sq. ft. - 4.1420 acre
Roofs = 5 rvofs at 2,006 sq. ft./house =12,000 sq. ft. - 4.2755 acre
Driveways = 4 driVeways at 1,000 sq. ft./house = 4,400 sq. ft. - 0.0918 acre
Zmpervious = 6,187 sq ft. + 12,400 sq+ ft. + 4,000 sq, fl = 22,187 sq. ft. - 0.5493 acre
Grass Lawns = 86,743 sq. ft - 22,187 sq. ft. = 64,516 sq. ft- 1.4811 acre
Staraize Fteauised:
a} "208" Storage Required =(5,1 87 sq- ft- 112"=1 2 in. per ft. )_258 cu. ft.
b} Bowstring = 625 cu. ft+ I Double Barrel i]rywe11, Type $(l.C? cfs out)
Storaee Provided'
Pond, 6" deep; (29')(3 l'){4.5'} _450 cu ft. > 258
Pand, 8" deep, (29.68')(31 68')(0.57') _63D cu. ft. > 625
' i. 32.35 x 34.36 ft.
~ E. 2.6$ ft
i. .
Z Oft.
~31 x 33 ft
4:i 5"=0.5 ft. S"=0.5Tf~ 4.1
•
I_ 27 x 29 f#. Pvnd F1var
.
(31 + 27)f2 = 29' and (32.36 + 27)1'2 = 29.68
(33 + 29)12 = 3 1' and {34.36 + 29}l2 = 31.68'
F7ATIONAL FORMULA HYDRQLC3GY & 6(]WSTRING iV1ETH{3❑: ❑ETENTION 8A5IN DESiGN
❑RAINpGE BASIN ANALYSES for 10 YEAR STORM EVENT
Date: 11125197 Prolect Name: Ridgemant Esta#es Nvrfh 8th Additon
Design: KVIIM. 5ite Lacatian: Six#een#h and Rotchfvrd
pisk Fale 8716avvsirngll[F113519w61 F'roject Num6er: 13519
I 8asin Name: E Basin aescriptian E
5CJ8RREA5: TIME OF CONCENTRATEDN (rninutes):
Descriptian Acrss c A*C Tc {4verfand ilaw} Tc {gutter flow}
Asphalt Pavement 0.142 0.90 0.1278 Ct = 0.15 [,.2 = 144
Rovfis 0.276 0.90 0.24$ Z'1 = 0.172
Driveways 0.092 0.90 0.0826 L1 (A) - 327 Z2 = 36
Grass Lawns 1.481 0.15 0.77" N(A) = 0.4 B= 0
5{A} = 4.414 n= 0.016
- 5 = Q.0[154
Tc (►4) = 10.05 d = 0.224
Tatal 8asin Area, acres = 1.994
Composrte Runa~F Cc~e~cien# = 0.342 L1 (B) = D '~c (gut.) 1.5~4
Car~bined {Area ' FiunnfF Cnefficient} = 0.68 N(B) _ 0 Tc(A+B) 10.05
5(B) _ 0
Te fotal 11.59
Tc (B) = 0.0 Inferrsity 2.09
Holding 5.13
"208" DRAfNAGE PRFtAMETERS: 0 {est} 1.42 c.f.s.
lmperviae~s "208" Area = 6187 sq. ft. "208° Volume Provided = 450 cu. ft. Time af Cancentration = 11.59 minutes
Storm Stofage Pravided = 630 cu. ft.
PEAK {]ISCWARGE, 10 YEAR 5TORM:
BOWSTRING +CALCLfLAT1tJNS Q= G` I' A= 1.42 C.F.S.
#1 #2 #3 #4 #5 #6 #7
Time Time intensi#y Q dev, V in V aut 5tarage
Enc. lnc. NuMBER and TYPE of DRYWELLS PROPOSED:
(min.) (sec.) (in.lhr) (cis) (cu. ft.) (cu. rt.) ,(eu. ft.y
[#i'sa} (A'C'#3) (ore.'#a) (9545) 0 Singfe-Barrel (5pvkane Caunty Type A)
1 Double-8arrel (Spnkane County Type B)
11.59 695.37 209 ---1.42 ~ 1326 695.37 ~ 630
Outffow Provfded i c.f s.
5 300 3.18 2.16 870 3430 570
10 600 2.24 1.52 1226 600 626
15 9(}{] 1.77 1.20 1369 900 469 - 20 1200 1.45 0.99 1417 1200 217 "208" TREATNEHT VQLUME:
ZS 1500 1.27 0.82 1430 1500 -70
30 1800 1.04 0.71 4441 9800 -359 Required GP.A. ponding vnfurrte•
35 2100 0.91 0.62 1447 2100 -653 impervious "208",4rea x 112" = 258 cu. i#.
4[} 24(}0 082 0.56 1471 2404 -929 valume provided at 6° depth = 450 cu. ft.
45 27[}0 0.74 054 1479 2700 -1221 /QKr
50 3000 068 0.46 1498 3000 -1502
SS 3300 0.64 0.44 1544 3300 -1760
6(} 3600 0.61 042 1593 3600 -2007 STORM STORAGE VOLL1ME:
55 39[}0 064 0.41 1689 3900 -2211
70 4200 0.58 0.39 1751 4200 -2449 Maximum starage eequfred ~ 625.62 cu. fE.
75 4500 0,56 0.38 1805 4504 -2695 vofurne provided at 8" depth = 630 cu. R.
80 4800 0.53 0.36 1817 4800 -2983 aK!
85 5100 0.52 0.35 1888 5100 -3212
90 5400 0.50 8 34 1918 5400 -3482 95 5700 0.49 0.33 1980 5700 -3720 QRYWELL REQU1REMENTS:
100 60€10 4.48 0.33 2037 6000 -35163
______-_--~__--__~---•__---------_-----~=z:e~~,~s~_ 0 Single (TYpe A) 1 [}vuble ('FYpe B)
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Starmwater I3rainage Repart
TT. STC3RMVVATER I]RAII'+TAGE CALGTTLATIONS. (cvntinued)
Basin F
Area
T'atal = 61,613 sq ft. - 1.4144 acre
Pavement = 16th Avenue 1 Sta. 17+70 to 24+29 66 =(659.66')(?0') = 13,193 sq. ft.
Rotchford 5treet 1 Sta. 5+43.72 to 6+50 I05.28')(18') = 1.913 sa. flt.
15,106 s~ ft. 0.346$ acre
Sidewalks = 16th Avenue 1 ER 18+0$ to ER 23+92 =(584'){6'} = 3,504 sq. ft
curb radii =3 1' + 31' -(62')(6') = 372 so ft.
3,876 5~ ft. - 0.0890 aCi'e
Roafs = 2 roofs at 2,000 sq R.lhouse =4,0[l0 sq. fr. w 0.(]918 acre
I3riveways = 2 driveways at 1,000 sq, ft.lhouse =2,400 sq. ft. - t] 4459 acre
Impervious = 15,106 sq ft. +3,876 sq ft. + 4,000 sq. ft. + 2,000 sq. ft =24,982 sq. ft. - 0.5735 acre
Grass F.,awms = 61,6I3 sq. ft-24,982 sq. ft. = 36,631 sq. ft. - +6.8409 acre
Storage Reauired: , -
a} "208" Storage Requ'vred =(15, I06 sq. ft. 12"- 12 in. ger ft. 629 cu. ft
b) Bovastring = 522 cu. ft. + I Double Barrel Drywell, Type B (1.0 cfs out) '
Stnrase Provided:
Pona, 6" aeep; J(n/4)(15 )2 + (15')(62'))(0 5°) = 554 cu. ft.
{(7r/2)(15')+1 5+62+15+62) (0,5 ft.2) = ss cu ft
642 cu. ft. > 629
Pond, 8" deep, { (n14)(15')2 + (i 5')(52'))(0 67') _ +630 cu.
~(iE/2)(15°)+rs+62+i5+62}(a.9 ft.2) = 160 cu. ft.
790 cu ft . 522
Stormwater Drainage Ftepart
TT. STORMWATER. DR.ACNAGE CA~CULATTONS: (Continued)
-
Basin F (continued)
62'
; 15' Ponc~ Bottflm 15,
rR' .
, 623
. 2.69 ft. ~
~j
2.0 ft.
4:1 64'=0.5ft. 811 =057ft. /4:1
(1/2)(2.0')(0.5') = 0.5 sqK (1/2)(2-68')(o.67y) = 0 9 54. ft.
RATiC7NAL FC]RMUL4 FiYDROLOCY & BOWST~ING METHC3Q: DETENTIQPJ BASIN DESEGN
DRAINAGE BASIN ANRLY51S far 90 YEAR STf]RM €11EN7
Date: M25197 Project Name: Ridgernant Estates Norlth 8th additon
Design: FCtWIVj. Site Locabon: Sixteenth and Rotchfard
Disk Fkle' 67 Stsawstmg114113519.wb1 Project Number: 13519
Basin Name• F Sasin aescriptianF
SIJBAREAS: TIME +f]F CONCENTRATIUAI (rrrinutes):
Descnptan Acres C A`C Tc overland flow3 Tc (gu#Esr f[ow)
Rsphalt Pavernent 4.347 0.90 0.3121 C# _ 0.15 L2 ~ 615
Sidewalks 0.089 0,90 0.0801 Zi ~ 0.172
Roofs 0.092 0.90 0.0826 L1(A) _ 0 7-2 ~ 40
pfiveways 0.047 6.96 41.4419 N(A) _ 0.4 B= 0
Gras.s Lawns 0.841 4.15 0.1261 S(A) = 0.01 n= 0016
S = 0.0098
Tc [A) = 0.00 d = 02246
Tatal Basin Area, acres = 1.415
Comp~site Runnff Coeffi~ent = D.4'S4 L1 (B) 0 Tc {gut.} 4.92
Combined (Area ` Runaff Caefficient) = 0.64 N(8~ _ ~ Tc{A+g} 4.00
TC total 5.00
Tc {S} = 0.0 irr#ensity 3.1$
Halding 21.91
"208" L7RAINAGE PARAMETERS: Q (est) 2.04 c.f.s.
Irnpervious "208" Area = 15106 sq. ft.
"248" VoEume Rrovided = 673 cu. ft. Tirrie of Gnncentration = 5.00 rninutes
5torm 5tarage Pravided = 774 cu. ft.
PEAKOiSCHAFtGE, 1D YERR S TORM•
801111ISTRING CALGULATI(JN5 Q= C` I ' ►4 = 2.04 C.F.S.
#1 #2 #3 #4 #5 #€'i #l
Time Time intansity Q derr. Vin V vut 5torage
Inc. Irec. NUMBER arad TYPE of ❑RYWELLS PROPQSEQ:
(min.) (sec.) (in.1hr) [cfs) [cu. ft.) {cu. ft.} (cu. R )
(01 Fsq (A'C`#3) (oW.-#z) (#5-96) 0 Single-8arre! (Spokane +County Type A)
1 Double-8arre9 (Spo~Cane Gr~uniyType B)
~
500 300.00 3.18 2.~ 822 300.00 522
OutfEvw Providecf 1 c.F.s.
5 300 3.18 2.04 822 340 522
10 600 2.24 1 .a4 1011 sao 411 -
15 900 1.77 1.14 1140 900 240
~ 20 1200 1.45 0.93 1214 1200 14 "208" TREATMENT VC7LUME:
ZS 1500 1.21 4.78 1246 15+40 -254
30 1$00 9.04 067 1272 1800 -528 Required G P_A. panding volume:
35 2100 0.91 0.59 1288 2100 -89 2 Impeevivus "2208" Area x 1Z= 629 cu fE.
44 2400 0.82 0.53 1319 2400 -1081 volume pr4vicfed at 6" depth = 673 cu. ft.
45 2700 0.74 0.48 1333 2700 -1367 OK!
50 3000 0.68 0.44 135E 3000 -1644
55 3300 0.64 0.41 1400 3300 -1900
sa 3600 0.61 o.39 1452 3600 -21 as sTaRM sToRAGE uoLuME,
65 3900 0.60 0.39 1544 3900 -2356
70 4200 0.58 037 1604 4200 -2595 Maximurn storage required = 521.87 cu, ft.
75 4500 0.56 0,36 1657 4500 =2843 volwme pra►ided at 8° depth = 774 cu. ft.
80 4$00 0.53 O.34 1670 4$00 -3134 C]k(!
85 5100 0.52 0.33 1739 5900 -3361
90 5400 0.50 0_32 1769 54(}0 -3631
95 5700 0.49 0.32 1828 5700 -3872 ORY{N€LL REdl1iREMENTS:
100 600(3 0.48 0.31 1883 600{] -41 i 7
0 5ingle {TYPe A} 1 Dnubfe (TYPe B)
aa'rnv'n-~
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f _
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ra
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Stvrmwater Drainage Repvri
II. STmRMGVATER I]RATNAGE CALCUI.ATIUNS- (evntinueti)
Basin A
Curb Unerting at I.,ow Faint. Sta. 13+35.40, right, 16th Avenue
h= 8 in. = Q 67 ft. Total height of opening
H= 0.213 ft Depth of water at entranGe
Q=195 cfs Total pea~c rate offlvw
Q= 3.(}87(L)(H)3/2 fnr Hlh r 1, 0.2I314.67 = 0.32 < 1
L = Q - (3.087)(H)"' = 1.95 - {3 087}(4. 213 = 6.43 ft.
Constriact Curb [3pening; 7ft. wide, 8 in. deep
Sasin B
Curb ODenina at i.aw PQint, 5ta, 4+39.2$, Ieft, 17th Avenue
h= 8 ir►. = 467 ft Total heig}tt of vpening
H = 0.1 29 ft. Depth of water at entrance
Q= 4.58 cfs Tatal pealc rate of #~ow
Q=3.os~(~)(H)3'2 forHrn <i, a. i29ro.s7=0. Xg <i
L ~ Q - (3.087)(H)31' - 0.58 ; (3.0$7)(0. 129)"' - 4 06 ft.
Constrruct Curb Opening; 5 ft. wide, 8 in. deep
8asin C
Curh +Oqenina at Lcrw Point, Sta. 4+00, pe{}, Rotchfard Street
h= 8 in. = 0.57 ift. Tvtal height of aperung
H= 0 13$ ft. Depth of wa€ter at entrance
Q _0.37 cf's Tcatal peak rate of flow
Q = 3.087(L)4H)32 f4r H/h < i, o 138ro 67 = v.ar < I
L = +Q - (3.087)(H)3" _ 0.37 i (3.087)(0.138)"2 - 2.34 ft
Construct Curb Openbng; 3 ft. wide, 8 in. deep
5tormwater Drainage Report
II. STORMWATER DRAINAGE CALCULATIC?NS (continued)
Basin D
Curb Onenine at .Gow Faint. 5ta. 4+39.28, right, 17th AVenue
h=$ in. = 0.67 ft. Total height vf opening
R =0.169 ft. Depth af water at erztrance
Q 1.I5 cfs Total geak rate of flow
Q= 3.087(L)(H)3'2 for M < 1, 0 15910 67 = 4.25 < 1
L = Q = (3.087)(H)"' = 1.15 = (3.087)([1. 169}311 = 5 36 ft.
Cvnstruct Curb Operung, 6 ft wide, 8 in deep
Basin E
Curb Oneniniz at Lcrw point, Sta. 4+00, nght, Ratchford Street
h= 8 in. =0.67 ft. Total height of apening
H ~ 0.224 ft. Depth of water at entra.nce
Q= 1.42 cfs Total peak rate of flvw .
Q= 3.087(I-)(H)"' fvr -Hlri <l, 0.22410.67 = Q 33 C1
L= Q=(3.087)(W" = 1.42 - (3.087)(0.224r a 4.36 ft
Construct Curb Opening; 5 ft. wide, 8 in. deep
Basin F
Curb anenine at Low Posnt, E.R. 6+3I .63, night, R❑tchford Street
h= 8 in. _0.67 ft. Total height of crpening
H 0.221 ft. Depth of water at entrance
Q= 2.04 cfs Total peac rate of flow
Q_ 3.087(L)(H}3'2 forHlh <l, 0 22110.67 = 0.-33 <1
L _ Q - (3 .0s7){H)31 _ 2.04 = (3. vs7)(0. 221)a'2 = 6.36 ft.
Construct Curb Opetung; 7 ft. wide, 8 an. deeg
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I
Ma Soil nume A~•ailab]e
p i ~-y n ater Reaction Dispersion Shrink-s~•ell
sy-mbol c3pacitr (1:5 dilution) potential
DsC Dragoon ston} silt loam, 0 to 30 percent Similnr t tn, pv in of ,oa pH
slopes. slopes,
DsD Dragoon stony silt loam, 30 to 53 per- ~
cent slopes.
DvD Dragoon very rocks compies, 20 to 33 Drsgooa'
percent slopes. 30 r,
roc • r.
crop u'
Fk8 Eloi6n siit loam, 0 to 20 percent siopes. 1ledium) 5 0. 17 to 0. 20 6. 1 to 6. 5 High_______ Low to mod-
glaciaP' erute.
canic >5
gravel.. 0. 12 to 0. 14 6. 1 to 6. 6 FIigh_______ Locv.
undulj,j 0 0. 06 to 0. 0q R. 1 to 7. :i Aieh._. I.nR.
'lu U. u4 co U. ut; ' ti. 6 to i. :i Bigh------- Loa•.
' EIC Eloika very stony sflt loam, 0 to 30 per- Simi7sr t
cent slopes. except
EID Eloi6n very stonp silt loum, 30 to 53
percent sJopes. ,
• Em Emdent sitt loam. , Medium~ ~ 0. 17 to 0. 20 7. S to 9. 0 High_______ Low to mod-
erate.
eous
s, 5 0. 17 to 0. 20 7. 4 to 8. 4 rloderute___ Lon•.
to Raf
, to aby ~
S 0. 17 to 0. _0 6. G to 7. 3 Low ltoderate.
FaB Freeman sflt lonm, 5 to 20 percent Very de : 8 0. 17 to 0. 20 G. 6 to 7. 3 ~toderats___ Low to mod-
slopes. Aith erate.
FaB3 Freeman silt lonm, 5 to 20 percent umora OS 0. 17 to 0. 20 6. 6 to i. 3 Lo,_______ \Iodemte.
slopes, severely eroded. from ,
FaC3 Freemnn silt loam, 20 to 30 percent - ~
slopes, severely eroded.
;
Fm Fresh n•ater mnrsh. ShnlloR,
fringel)
WAtCT ~
IIS Il1RlGaC3 Garfield siltg clay loam, 0 to 30 percent I'erv de," S' 0. li to 0. 16 6. 6 to i. 3 Lon•_______ \Ioderate.
slopes, severely eroded. unlan 2 0. 14 to 0. 17 6. 6 to 7. 3 Loir------- High.
P 5 0. li to 0. 20 G. 6 to i. 3 Loo•------- \Ioderate.
GgA Girrison graveUf loam, 0 to 5 pcrcent Gravell~ 5 0. 12 to 0. 14 6. 6 to i. 3 Dioderste Loc~-.
Gg6 Garn on gra~•ellv loum, 5 to 20 percent ou nc 0 0. OS to 0. 10 6. 6 to i. 3 Aioderate___ Lon.
slopes. igneoL; 0. 04 to 0. OG 6. 6 to i. 3 High_______ Lon-.
erateli
t
. sand, ;
2 t, to
GmB Garrison vcry gru~~ell~~ loam, 0 to S Similar l 0 0. OS to 0. 10 6. 1 to. 6. G D3oderate___ Lon-.
percent slopes. the sd 0 0. 08 to 0. 10 6. 6 to i. 3Moderate___ Low.
1 0. 04 to 0. 06 6. G to 7. 3 High_______ LoR.
Gn6 Garrison very stony loam, 0 to 20 Similar )
percent slopes. the su,
GpA Glenrosc silt loam, 0 to 5 percent slopes. 4erv de} 5 0. 17 to 0.20 6. 1 to 7. 3 nioderate__ Low to
Gp8 Gleurose silt loum, 5 to 20 percent tlopes. fonue~•
GpC Gleiirose silt loam, 20 to 30 percent ]aver ; moderate.
slopes. gentlv
GpD Glenrose silt loam, 30 to 03 percent
, • slopes.
. ~
i
. . - ~
_ _ - - . . . . . . •
' TrY a dePth of 1.2' 4-4.1 Drywelle - Precas[ conerete dry-
j welZs, as sEtawri an Caunty standard
1 V~~.~B~ R213 g i1Zf~ ~ Area • drawings, may be used to tetain storm
, draireage in soils with a very raptd per-
a ~ Wetted perimeter meabiTity. Types A and F! Drywelle in
~ ~2'xI«2'#(2xl.2xZ,2) = 5.28 g.f. the fQ3.1.cwing soils may bee designed ta
infiltrate a raee of flraw ef 0.3 cfs and
2 +2(I.22+2.42) 7.36 , fr. 1.0 cfs respectively:
Song liarb3.e
R = . TI7 . Banner Plzoebe
I" Garrison s Spricrgdale
' 213 iI~ -9-a-gaW--
~ V - I.486 (.7I7) (.Oe } = 5.61 fps The Iacatians of these soil types are
.0 shown ia the Soil Conservatinn 5ervite
Q = V,A = 5.61 fps x 5.28 sf 29.6 cfs Sail Survey far Sgakarce County. The
= drafnage repart shall include a capy af
~ • the SCS map zriti~ the subdivision plvGted
= 30 ~~s d~ I.~' therean. 'Fhe Coursty Engineer shail re-
quire the developer to provide a sieve
Salve ac;
Try I.3Y analysfs and soil type test from a soils
• Zabvratary accepta~rle to the Car~nty Er~-.
~ Q• ~g {1~ +B I}e)3 pc 31~ - gineer if thera is a questivn regarding
b+ 2LL. Dc the ahoVe svil types.
312 Ia rural areas, as defined in Syokane ;
Q-yr32.2 (2f2xl.3)3 K 1.3 a 30.9 cfs Cnunty Road Standards, apen gravel dry-- ;
{2+ZXZXI.3} we-Ils may be vermitted in lieu of the `
- 3U.9 cfs = 30 efs .i. dc a 1.31 precast eonerete dryvells. ~
a Frecast conczete dr~e~.Ts prapased for
'
~ > ~ n, flvw is supercrit~ea~. . use in other 5t]iZ5 than those shor,n •
~ 5ince the flaw is supercritical, care ab°ve and aIl open gravel drywells shall
shon3d 6e taken to provide a prnper de- be designed arcnrding [o percolation
sign at pvints where hcarizontal and/ar rates detersnined by a field [es tcon-
VerCical alignment change. f°rming ta the Manual of Septic tank
practlce. A Cannty inspector shall be
A free baard aP .30d should be applied Freseat dcring a?r F°_rcoIativr. tests. A
■ gercolatian test caZculatian sheeC
D - .30 X 1. 2= 1. 56' s igned aad seales3 by a regis tered civil
engineer shall be submitted. The ger=
- V= 5.5 fps > maxfmum allowable. cQlaCiQn rate sha2l be equal to or
greater Chaa 72 inches per hour to be
PraVide rip rap. (Refer to 5ectirn acceptabie far drywel.I CanStruCtion.
` 4' 5' ) 4-4. 2 Starage Facilities s Aetention
4-4 DetentioalRetentinn 5vstems -TYce st°sage facilities may be used tQ
~ peak rate of rua--aff from an existing regulate floW rates. An anerflow
site shall nat be ircrreased due tc the type gt°=age sys[em which regulates the
. propased develapmenC f❑r a given design =a[e of autflnw shall be usea. 5ee
Figures 4
starc~. 'There£are, a retentionldeten- -3, 4-4, 4-5, and 4-5 far
Cfon fatil.ity r~n-stte wiTl ~re required. ~u,~gested details. I.aa~dscaped faciZ-
~ ities such as parks, glayfields, tennis
Date: 4]4/84 ' courts, ete. are recaramended £or
■
_ 4-15 ~
Stormwater Drainage Report
III. RflADIWAY SLTRFACING DE aTGIV. ,
The Spokane County Alternative Pavement Desigr: (Ir:tenzim) fvr Local Access Favement Structures was used far
design of'the roadway surfacing-
Frosn the tab1e, Local Access Pavement 5truetures, the follawang irif'ormation is needed to determine the required
surfacing depths.
1} The type of street rnust be local access.
2} Soil type (as classified by the T]nited 5sri1 Classification System)
-3} The average daity traffc, ADT
Street Tvpe: 16th Avenue, 17th Avenue, and Ratchfosd Street are designated as local access (residential).
SoiI Tvpe:
In accvrdance with "Soil Surveyf, 5pokane Caunty, Washingtan" by United 5tates Departmen# of Agriculturr,
5oi1 Conservatian Service, 1968, the soil found at the site is categorized as:
GmnB, Cxarrison very gravelly loam, similar to Garrison gravelly poam, except that the
surface layer is very gtave31y.
Test hvles were dug by Simpson EngineeePS, inc. alang 16th Avenue, 17 feet righ# of centerline at the faUawiizg
ivcations; 1} Station 12+00, 2} Station 17+70 (intersectian of Rotchfard St ) and 3} Statian 22+00. The test
hales were dug to adepth of appraximately 12 inches below subgrade Since each soil sample appeared the
sarne, the svil sample fram Stativn 22+00 was tested by Strata Geotechnical Engineering. Test hvles were alsa
dug by 5irnpsan Engineers, Inc. along the centerlite of 17th Avenue at the failawing ivcatian5; 4) Statian 8+94
(intersectian of Rotctford Street) and 5) Statian 4+50. A sieve analysis was performed by Strata on soil
sampies 93, #q and #5. From the testing, the soil type was found td be aBIack Silty Fine Gravel with Ssnd, GM
per LTru£ied Soii ClassificatiQn System. (See sieve 3nalysis results included.)
Average Dailv TrafC'ic. ADT:
16th Avenrae will have average daily traffic enunts of greater than 600. The remaining roads, 17th A.venue and
Rotchf'❑rd Street, ivill be short crvss streets each rvith aVerage daily traffic counts of less than 200.
DesiLm:
From xhe table, 2 inches of asphalt cancrete pavement over 8 inches of crushed surfacing
is requireti far 16th Avenue.
From the table, 2 inches of asphait concrete pavement over fi inches of crashed surfacing
is planned for 17th Avenue and RotchfQrd Street.
"~^~'~:s'..,~.."~....s. ~~~4Y.... ° _'i't~.+:•a.n _ _w _ _ - -
` LOCAL ACCESS i A■ EMENr STRUCTU11f.irS
AVERAGE DA►!LY 7R►4FFCC
Sl3iL TYPE 0 - 2DO 200-600 600+
. Glill 2"16„ . 2"16" 211/611
GP 2111611 211/'~71 27710
(GM 2176" L*}I!j']4i 2Ii~v1Y
~ ~ ~
~
GC 2I1r7~JII 2478lf 311161I
Ff
sw 2fel611 211~14 2"rgl'
sP 211~6" 211/7" 2111$'1
~+11
`4 r] ~ 4 J~f I 211Pf8l l +]I f'G7
~ I F ~7
s71y1
SC Pavement ❑esign ~
~ ML 31116" 3'1i81s 4',f6,1
CL Pavement Design
OL 410/718 51k1741 MH Pavement C]esign
aH ~ Pavernrent ❑esign
pT PaVement Design .
1) Sail type is classified by the Unified Soil Classificat7an 5ystem.
2} Required thickness is givera as inches of aspha[t concrete pavecnent over
anches of crushed surfacing.
SPOFtANE COUNTY ALTERNATE PA►VENlEN7 DESIGN
{CNTERIM} . . . '
~
s T R r3 i a
GEOiECNNILAL EN('iENEERING 8 AlATEFtIALS iE5'FrNG
~
1S10 PJ M.5ma7r Fid &1110nq C. SutC4 SOD SpokanE7, WR 99216
•itFi H9 f I9D1 1 Fax 503 H91 2012 ! e-mad SlratSPkCiCa s:am
MarCh 6, 199$
Client Na. SIMENG
- - Praject Nv. S 9$01A
Reference No.: 5L3723
Mr. Kevin McN[ullcin
Simpson Engineers, Inc.
909 N. Argonne Road
Spokane, WA 99212 -
Proaect: R'rdgemant 8th Additivn
Description: BIack Sil#y Fine Gravet with Sand (GIVd)
Lvcatian: #3 - I6tri Avenue, Sta 22+00 at -12"
STEVE SIZE PERCEIY'Y' PASSING ~ SPECTFTCATION LIlVHT5
3" 100 ~
2", 10(] k
1" 95 ~
314" 88
~
1f2" 71 ~
- 3es°° 63 k
#4 43 ~
~
#g ~ 31
#16 ~ 26 ~
#34 ~ 24
#54 ~ 23 .
#l0U f 21
#204i i$
Tn-Sitra Moisture Content = 10.0°/a
Sincerely,
S'Y`RATA, INC.
41_-~ w
Rick J Wvadworth
Tesiing 5enriees Manager
!t!w•lch
IDAHD @WASHfNGTflN * QREGON + WYCIMING • MONTANA 9 UFAH • HEVADA
S i a T a
GE(7TEf.'f4P1iCAL E.NCiiNEERIryG ,S AAATERIALS TESTING
~
f620 P! M.]mI!t Pri s1i1k11nq r ;,pFite: 1[}tf $ppkaRP WR 902 I~"'o
~'7 73z)1 I!7f}t ! F;7x 5(7.7 851 2412 1 e-rt1811 5tra15{7kRJjCr3 CQrrl
Malch 6, 1998
CPient No. SIMENG
Project Nv. 5980 1A
FteferenGe No.: SL3723
Mr. Keviri McMulkin
Simpsan Engineers, Inc.
909 N. Argonne Road
Spvkane, WA, 992 ~ 2
Prv_iect: Rid~emont $th Additian
I]escription: Black Silty Fine Gravel with Sartd (GM)
Location: #4 - Intersection of 17th and Ratchford, Sta 3-30 at -18"
SIEvE sTZE ~ PERCENr PaSsINc ~ s~~CIEFrCATIarr ~IMIrs
3" ~ 144
2" ~ 83
1" f 70 ~ .
3/4°9 p 63
1r2" ~ 51
3r8°° ~ 4s
#4 k 34
#s ~ 27
#16 23
#3fl 20 ~
~
#50 18
#1d0 16 {
#200 1 14 ~
In-Situ Moistine Content = 6,2°/a
*In-Situ Moisture Content of HicsTe #1 = l0.S°/fl
Hole 92 = 9.8°Jo
Sineerely,
STRATA, TNC.
_ R.ick J Waodworth
Testing Serviees Manager
RJ W:fch
[QAHQ • WA5r1ING7OH + ❑AE~'i47N • WYOMING + 1410WTANR • L3TAH + NEVAOA
GE[?TECHNICAL EAIGINEER[NG 3 MATEAIAE9 7ES7lNG
~
P62(] hl Mam+*r Ri1 '8udcnnq t; ,yurie E047 5pakaRp- WA `39216
591 y91 1c4[.H1 ! F,iA;i[]q 891 2[}1? I c-r►ta31 SIFaiSpkfdiC7 C4m
MaffCh 6, 1 99$
ClIeffit ND. ~~UIENG
Pr{]]eCt ND. S9$01A
Referef1Ce NS].: SL3723
Ma. Kevin McMuikin
Simpson Engineers, Tnc.
909N, Argonne Road
Spakane, WA 99212
Prvject: Ridgemont 8th Addition
Uescription: Black Fbrie GraveP with Sand (GM)
Lvcation: #5 - 17th Avenue, Sta 4+50 at -1$„
s~EVE sIZE ~ PEReENT PASsIvG ~ sPEcIFY+cATioN tiEMaS
3" ~ 104 ~
2" ~ 91 ~
1" 64 N ~
~
314" 53
11Z" ~ 42 ~
~
31$" ~ 36
~
#4 26
#8 ~ 24 • E
#16 9 17 ~
#30 ~ 15
_ #50 ~ 14
#loo k 12 I
#20a r 10 I ,
In-aitu Maisture Content = 49°ro
Sincerely,
' S'TRATA, IivC.
Rick x Waodworkh
Testing Servaces Manager
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