The URL can be used to link to this page

27215 PE-16784D RIDGEMONT EST Nr boom x, -A Ile x 4t Pik ay'e` A ~1 I l 20 40F ■ r 1 I 1 i sr ~ r f f ' " r' ~ ~ If 10'~ + I I ' t % I 1 % Yol r .T r • ' f~ ~~J I I 1 v I~ ~ ~ 1 1 li l ~ f 40" !1 i '41 ! 1 I I 1 1 7 ' 1 I 1 I e ~ d! I i 1 1 ~1~ 1 1 1 ~f f®r ~ ► I . i fl.~■ I ~ ~ti~~l i '~I~ r.--ter ~ ~ f + 44 III ° s r e ~ - ~ X11 ~ ~1 111 \ ,11]~ B A 200 p 200 SCALE IN FEET T,, I'f'.°CI--i ~1' l14 OW)UNADARY OF OFF.SrrF- r tl\ r q I 1 1 I . f p I ~ ~ I 1 w I VIII/I~~/~jlll'IU \ VBA Illlllllq~ ~J~ ~ - ~ igilill i ~ 1Ill1p F //4yy~nI~ D~llNrNi ~ ~ r j j Tj; 'ilk a ASSIGNMENT For security purposes only, (developer) hereby assigns to SPOKANE COUNTY, a political subdivision of the State of Washington, the following: Savings Certificate Number in the face amount of $1,000.04 and held in and by Bank of Branch (bank address) This assignment is made as security for the full and faithful performance by (developer) of certain drainage facilities and sod for LOT BLOCK RIDGEMONT EST NORTH 5TH ADD (Plat) Plat # P 1684D in accordance with the drawings: and specifications as submitted to and approved by the Spokane County Engineers office on (date) - , 199 Any interest benefits accruing under said savings certificate shall remain the property of (developer) Said savings certificate to be released to - (developer) any other party only with the prior written consent and agreement of Spokane County. PROVIDED, FURTHER, the undersigned does hereby authorize (bank) to pay over to Spokane County all or a sufficient portion of the monies in the savings certificate referenced hereinabove upon written documentation being received from the Spokane County Engineer indicating that the purposes for which the savings certificate was assigned have not been fully and faithfully performed as required and a statement of that amount of money which the County Engineer as required and a statement of that amount of money which the County Engineer deems necessary to complete such obligation. Upon receipt of such written documentation, (developer) hereby authorizes (bank) to release to Spokane County that amount of money requested up to the maximum amount in the savings certificate. (developer) shall be responsible for any costs incurred by the county excess of the amount of security. DATED this day of , 199 BANK OF President Secretary DATED this day of , 199. DEVELOPER STATE OF WASHINGTON ) :ss ) County of Spokane On,this day personally appeared before me - to me known to be the individual described in and who executed the within and foregoing instrument, and acknowledged that signed the same as free and voluntary act and deed, for the uses and purposes therein mentioned. GIVEN UNDER MY HAND AND OFFICIAL SEAL this day of 199 Notary Public in and for the State k~V\assign.208 of Washington, residing at Spokane ENGINEER'S REVIEW SHEET BLDG. PERMIT # -or -FILE# PE_ Related File # Date to Review Time # Date to AA & DR Time Date ReaeWed 9-13-93 Project NaCme RIDGEMONT EST NORTH 5TH ADD No. Lots 5 No..Acres - eetton - Township - Range SITE A1l'IT RkSS - 21STCT/E SONORA PARCEL # 2554 9065 Applicant's Name DAVE RENZ-TDC Phone # 928-1991 Address ' 12929 E SPRAGUE AVE'-SPOKANE WA 99216 Work # Date Conditions mailed Contact person Phone # FLOOD ZONE V NO W S SCHOOL Engineer J Surveyor's 1 Architect's Name Planning Contact Person Phone # 455-2205 Date Submitted Description Initials 1 J A TO PAY FEES OR'R,RIORITY FEE COMPLETED & COPY TO ACCdUNTING A' .l FINAL PLAT FEES COMPLETED & COPY TO ACCOUNTING 3 NOTICE TO PUBLIC # 1 3 4 6 COMPLETED - OR NEEDS TO BE SIGNET]_ DESIGN DEVIATION SUBMITTED ' Y AL'T'ERATION TO PLAN' - 13LOCKS & LOTS HEARING EXAM _APPROVED -DENIEDAP1PEALED ESC J PROJECT _APPR0VED,1_DENIED ~ I Su(LoeAt)a t r td=-, mck% 11- dew, * 01-~S rv{ 4U, l t - .2*4, -q t L tt . '3 ~ ~e1""I w4A- r' h ~i11--~ `j~-~- ' e , [ oaq ~ &,t~ 60b' 7 Q_- Q 0 4- l.. T L v FL 4..F''-> xlpweview tor • - f ■ ._J PLAT N 1 G~ - t~ T STATISTICS --r ~ ICa B ~ ` q Plat Check Fee :56G - A~-,riz PQ 10 4-- 125 Number of Lots Road Miles (New) Total Area MAP h Arrow F e ' Legend Procedures & Equipment Basis of Bearings gE Plat Location By Title Official Signature Blocks surveyors certificate Road Names Road Widths Adjacent Area Lot & Block Numbers RIW Dedication designated l root Strips 3 RPS on GLO Corners Tract X Lot Areas Bench Mark Closure eq, I U ICATI(ki Description (To Map) Description (To Cert) 'Owners x G-N Z I ~ Pf tt~ d1'1 tCa4 [ Certificate to Plat W I Foot Strips RID - CPR Statement Access Prohibited RIW Dedication Cc ? 1 16 D aeLanttae 0V p(O tarn g g g Flood Insurance Stormwater Management 208 Bonds - $1,000.00 ea 208 PLANS APPROVED J~ Private Road Doc. #'s Private Road Warning Road Plans Bond Road Impro y Signed By Engineer G4~t~c G C ~ i"~"6t d=U ASSIGNMENT' For security purposes unly, TDC hereby essigus to SPOT E COUNTY, is political subdivision of the Slate of Washillgtesrl, th1- roTinvving; Savings Certificate Number MR.z 506-S001 - - - - in the face autouut of 31500.00 and held iii and by Washington Mutual a Federal Saying5 - Rank of Washinjzton Spokane Valley 5036 r Branch This assignment is mane as :security for t[te ftsli -lud fsitlrful perrartnnnre by TDC of certain roads, monume"ts and drainage facilities ter Ridgemont North #5 as specified In the typical section and rondway improvement slrecifica(icrns for said p,-oje_cl, dated _ May1994 and on file in the Office of the Spokane County Ergineer. Any interest benefits scci wing under said savings eertifleate shall retain the propr rty of TDC . Said savings certificate to be released to TT)rl or any ether party only with the prior written consent and agreement of Spokane C".nunty. PROVIDED, FURTHER, the u11dersigned draw 11eteby aullin_ttze Wash a.n ton Mutual a de~~ Swing-9 Rank to pay over to Spokane C.ounry all at a sufficient pnrlinn of llte monies in the savings certificate refeienced heleirinbo e upon written dncumentatinn being received from the Spokane County Engineer indicating that [tie purpuzes- fnr which (lie savings certificate was assigned have not been fully and faithfully perforated as required and a statement of Mat 811]011111 of money which the County Engineer as rewired and a statement of that umuunt of money which the C'nunty Engineer deems neces&ary to minplete such obligaIion_ Upon receipt of such wlit Icit docunienta lion, TDC hereby authorizes L,la s'h i ngtrrn_ A+[c bias to release to Spokane County (bat amount of money requested up to tfie rtlatimum :.amount in the savings certificate. DATED this --J-8-1--h day Of _ av . 199 4 BANK OF Id g a Faders l SavixigrS Bank Secretary DATED this 'R7 6 ~ tiny of - ~ v P 199 1r-/ . STATE O WASHINGTON ) :ss County of Spokane Qn this day personally appeated before ule --Vz~ DEVELOPER to a known to be the ir~a jy~gitq~ 5t•rihed in and who ex u(ed the within and foreg that signed th,~ i~r~sl. ~ nil voluntary act and deed, ftrr the ekes r ■ on ~i . S1 r day of (,TVEht ijNj5 ° f-1'-A OFEICiAI, .9 w NOTARY p PUBLIC o i~~T ~A Alola utrlie in rq'lassi o bon rr 01 ' 'Asl ref W~ -1--0 asha igton, i Ynsttument, and acknowledged Purposes therein mentioned. 194. -tqgp for [ Slate ADDRESS NO. 94 0774 BEFORE THE BOARD OF COUNTY COMMISSIONERS FOR SPOKANE COUNTY IN THE MATTER OF FILING THE FINAL ] PLAT OF R 34W r c FMM,ATTES TES N,,@ RTC } lffi n i o I T I O N , PE-1684-92, WITH } R E S O L U T I O N EXISTING URBAN RESIDENTIAL-3.5 (UR-3.5) ) ZONING IN THE. NW 114 OF SECTION 25, } TOWNSHIP 25 NORTH, RANGE 44 EWM, ) SPOKANE COUNTY, WASHINGTON ] BE IT RESOLVED BY THE BOARD OF COUNTY COMMISSIONERS OF SPOKANE COUNTY, WASHINGTON, that the Final Plat of Ridgemont Estates North 5th Addition, PE-1584-92, being that portion of the NW 114 of Section 25, Township 25 North, Range 44 E.W.M., Spokane County, Washington, described as follows: Beginning at the northeast corner of Lot 2, Block 2 of Ridgernont Estates No. 4 - 2nd Addition, as recorded in 19 of Plats, Page 71; thence north 89020'22" west, along the north line of said Block 2, 500.60 feet to the northwest corner of said Block 2 and the easterly line of Sonora Street; thence north 00°39'38" east, along said easterly line, 170.00 feet to the beginning of a curve concave to the west with a radius of 435.00 feet; thence northwesterly along said easterly line, through a central angle of 13°47'37", an arc distance of 104.72 feet to the end of curve and the southwest corner of Lot 1, Block 6 of Ridgemont Estates North 2nd Addition; thence north 76°52'01" east, 135.00 feet to the southeast corner of Lot 1; thence south 89°20'22" east 148.86 feet; thence south 16°53'57" cast, 56.23 feet; thence south 55°33'42" east, 295.63 feet to the westerly line of Ridgemont Estates; thence south 19°13'09" west 92.75 feet to the point of beginning; Situate in the County of Spokane, State of Washington. C -M ~appr e~ with the exception that the public rights of way dedicated in this plaatt will' of be i-rrya established for maintenance purposes until the County Engineer has certified that the roads have been improved to County standards and approved by a separate resolution of the Board of County Commissioners. ADDITIONALLY, until the final plat document is filed in the Spokane County Auditor's Office, this subdivision has only preliminary plat status and is subject to expiration and null and void status if not periodically granted an extension of time consistent with the policies and procedures of the Planning Department. PASSED BY T1IE BOARD THUS - ~Z- DAY Or MAY, 1994. BOARD OF COUNTY COMMISSIONERS OF SPOKANEVOV`, Y, WASHINGTON Hasson, Chairman j D. ilberg I Jf- n Patricia A. Mummey ATTEST: M E. DONAHUE erk the Board By: Ros n ne on tague, Deputy FILED OF R{LCQRDED , REOUE I* ttF ' INTER0Fh%.,6" V 9406060095 JUN 51 AH '9q 24th Avenue Y ~ RF No. 412"0" T V PO K A N' C C U N l t, a a; H Assessor's Parcel No. 45252.9065 SPOKANE COUNTY ENGINEERING DEPARTMENT Spokane County, Washington DRAINAGE EASEMENT w 1607PAGE1994 The Grantors A.B and Hilda Renz, husband and wife, of the County of Spokane, State of Washington, for and in consideration of Mutual Benefits, the receipt of which -is hereby acknowledged, grants to the public of the County of Spokane, State of Washing~t _ a Drainage Easement over, under and across the following described real property situated.~ii ttta~- ty r, of Spokane, State of Washington: Assessor's Parcel No. 45252.9065 -~;ao A 30 foot Drainage Easement over that portion of the Northwest Qd~~t,o ' . 1/4) of Section 25, Township 25 North, Range 44 East, W.M., Spokane Nunty-, Washington, described as follows: , BEGINNING at the Northeast corner of Lot 3, Block 1, "RIDGEMONT ESTATES NORTH 5TH ADDITION", thence N.55°33'42"W., along the Northerly line of said Lot 3, a distance of 60.15 feet to the True Point of Beginning; thence continuing N.55033'42"W., a distance of 33.30 feet; thence N.08042'52"E., a distance of 122.77 feet to the beginning of a curve concave to the Southeast with a radius of 215.00 feet; thence Northeasterly, through a central angle of 15°46'24", an arc distance of 59.19 feet to the end of curve; thence N.24029'16"E., a distance of 29.76 feet to the beginning of a curve concave to the West with a radius of 70.00 feet; thence Northerly, through a central angle of 45006'17", an arc distance of 55.11 feet to the end of curve; thence N.20°37'01 "W., a distance of 128.86 feet to a point on a curve concave to the Northwest with a radius of 435.00 feet and a radial bearing of S.16039'45"E.; thence Northeasterly, through a central apgle of 3°57'16", an arc distance of 30.02 feet; thence S.20037'01"E., radial to said curve, 127.82 feet to the beginning of a curve concave to the West with a radius of 100.00 feet; thence Southerly, through a central angle of 45006'17", an arc distance of 78.72 feet to the end of curve; thence S.24029'16"W., a distance of 29.76 feet to the beginning of a curve concave to the Southeast with a radius of 185.00 feet; thence Southwesterly, through a central angle of 15°46'24", an arc distance of 50.93 feet to the end of curve; thence S.08042'52"W., a distance of 137.23 feet to the True Point of Beginning. J Drainage Easements, as described hereinabove are for the purpose of installing, operating and maintaining drainage ditches and drainage facilities to dispose of runoff, are hereby granted to the public. The County of Spokane is hereby granted the right of ingress and egress to all Drainage Easements adjacent to the public right of way. The Grantor will construct the drainage facilities in conformance with the approved plans on file in the County Engineers Office. The Grantor or their successors in interest shall maintain the drainage ditch and access road in conformance with the approved plans on file in the Engineers Office. The property owner or his representative shall inform each succeeding purchaser of all Drainage Easements on the property and his responsibility for maintaining drainage facilities within said Drainage Easements. The Drainage Easement described hereinabove is to and shall run.. with, thet-4nd.,, No modification of the boundaries of said Drainage Easement can be made without the`pribr approval of Spokane County. R. E. Excl TO Exempt Date rt_ ne ty eas. F-A STORM I ER 1 RMNAGE REPORT for R-id erno'nt Estates North 4 Sch Addition A 5-Lot subdivision located in the NW 114 of Sectloa 25, T.25 N., R.44 1r, W.M. Veradale, Washington 99037 for Tupper and Associated Inc. September 27, 1993 Lot Plans Revised- November 221993 E 1 2site Storm atcr U'telTecalculat~:d Ap~ab RECEIVED APR f 9 1994 SPOKANE rOUNTY ENGINEER Report Prepared $y_ Simpson Engineers, Inc. North 909 Argonne Road SPalcane, WA 99212 OFFICIAL PUBLIC DOCUMENT SPOKANE COUNTY ENGNEER'S OFFICE 44 RI ~A PROJECT 11 J+ ,1 SUBMITTAL. 0 6l RETURN TO COUNTY ENGINEER I V44f STORMWATER DRAINAGE REPORT for Ridgemont Estates North - 5th Addition !ABLE OF CONTENTS Summary Table 1: On-Site Drainage Basins `umnaary ab a 2: ffsite ► rainagc T1111 s "208" Pond Volume Calculations Rational Formula Hydrology & Bowstring Calculations Capacities of Curb Opening Inlets Stopping Sight Distance, 21 st Court Intersection Sight Distance Analysis S.C.S. Soils Map and Description ' 2 ' Klan of Usite ~.rain"N'a'n''e7Basi n. , ~~Jcu at'ons for ~xistin D' : , - "208" Individual Lot Plans "208" Pond: Section Detail Supplementary Maps: 1. Drainage Map for Ridgemont Estates North - 5th Addition 2. Street Plan-Profile, 21 st Court e i 44 1 STORMWATER DRAINAGE ANALYSIS for Ridgemont Estates North - 5th Addition A 5-Lot subdivision located in the NW 1/4 of Section 25, T.25 N., R.44 E.W.M. Veradale, Washington 99037 September 27, 1993 SUMMARY TABLE: DRAINAGE BASINS Basin Name: SA 5B Units Total Area 17,320 121,380 A. Pervious Area 6,420 103,420 .ft. Impervious Area 10,900 17,960 .ft. # Uwa s= Area 1= 1 000 3= 3 000 .ft. # Houses=Area 1= 2.000 3= 6.000 .ft. As t Streets 7,900 8,960 .ft. "208" Volume 330 374 cu.ft. Pond Floor Area 600 708 .ft. Pond Perimeter 100 104 lin.ft. Pond Vol. 6" 350 406 cu.ft. Pond Vol. 8" 491 567 cu.ft. Pond Name Location SA L-1, B-1 5B L-5, B-1 NOTES: Driveways are assumed to be 1,000 sq. R. of concrete per each lot, and houses are assumed to cover 2,000 sq. ft. per each lot. Portions of Lots 1, 2 and 3 have already been included in Drainage Basin 6 of R.E.North - 2nd Addition and Basin 3C of R.E. North - 3rd Addition, including houses on Lots 2 & 3 of this plat. Conversely, a large portion of Lots 1 & 2 of Ridgemont Estates No. 4 - 2nd Addition is included in Basin 5B of this plat. Areas draining from the mostly-developed hillside SE of this plat. Basin flows merge at the existing catch basin near the uphill NE corner of Lot 3, and exit the plat via the existing ditch to the north Basin Name: Renz-l Rjenr,-2 Is .total Area 497,240 85I,260 .ft. Pervious Area 448,500 663,340 .ft. Im rvious Area 48,740 187,920 11. # Uwa s= Area 10= 10,000 27= 27.000 .ft. # Houses=Area l 1= 22,000 27= 54 ooo . .ft. Asphalt Streets 16,740 106,920 ti. Flow enters plat Ex. ditch from S. Ex_ 15" CMP now exits lit Ex ditch to N. Ex ditch to N. NOTES: These two offsite basins include existing developed lots in "Ridgemont Estates" on the hillside to the SE of this plat, and a minor amount of undeveloped land further up the hill. Stormwater from these basins passes through the plat near the east end of Lot 3, and continues northward into the proposed "Ridgemont Estates North - 3rd Addition, to the north. See the drainage report and accompanying maps for 3rd Addition for the final disposal of stormwater from these two offsite basins. The area above/SE from Camine Court has been included in basin Renz-2, although most of the stormwater in this area is captured by the three inlets/drywells shown on the attached 1" = 200' map of the offske basins. By ignoring the grate catchment, we are taking a conservative, worst-case approach to analysis of flow in the existing ditch exiting the 5th Addition. Each existing lot is assumed to be developed, with a concrete driveway and a house. Driveways are assumed to be 1,000 sq. ft. of concrete per each lot, and houses are assumed to cover 2,000 sq. ft. per each lot. 1 1 1 1 "208" POND VOLUME CALCULATIONS IN GENERAL, for any drainage pond with 4:1 side slopes on all sides, the pond volume can be calculated with two components: the volume directly above the floor area plus the volume above the side slopes. Volume is calculated at 6" depth for °208" treatment and at 8" depth for storage, as follows: At 6" depth: Pond Volume = (0.5 ft. depth x pond floor area) + (112 x 0.5 x 2.0 x pond floor perimeter) = 0.5 A+ 0.5 P At 8" depth: Pond Volume = (0.67 ft. depth x pond floor area) + (1/2 x 0.67 x 2.68 x pond floor perimeter) = 0.67A + 0.89P 2.68 feet 31-I POND 5A: Pond Floor Area, A = 20 x 30 = 600 sq. ft. Pond Floor Perimeter, P =100 LF Volume at 6" depth = 0.5 A + 0.5 P = 0.5 (600) + 0.5 (100) = 300 + 50 = 350 cu, ft. 90 FbND 5A FLOOP Z~ zo Volume at 8" depth = 0.67A + 0.89P = 0.67(600) + 0.89 (100) =402+89 = 491 cu. ft. POND 58: Pond Floor Area, A = 1/4[x(14)2] + (11 x 14) + (16 x 25) = 708 sq. ft. Pond Floor Perimeter, P = 104 LF-~-~~ Volume at 6" depth = 0.5 A + 0.5 P = 0.5 (708) + 0.5 (104) = 354 + 52 = 406 cu. ft. POND 5e FLooP, 2 Volume at 8" depth = 0.67A + 0.89P = 0.67(708) + 0.89(104) = 474 + 93 =567 cu. ft. Pond Floor ssssssssssssssasssssssssssssssssssssssssssssssssasssssssssasssssssssssssss+ssssss 1 12 .w f I RAI I0NA1_ FORIYUL A FE'S Iii ;Gi__'L-JS e 1.f('il_E 9I24/c?,_ 1)ES 10 I"dE1I - L),. 1-1 ~ C.. t.?17 . 1 EV ~~1=f'I OIJE.CT NAME - 1=; I DGEM[: NT NORTH " 's-11-1 i-;DD 1 T 1 ON DESCRIPTION G1 0l'" 3" WA IER DRAINAGE T (J' ON-CITE PONUS 5UBr~hr o; 1 - 1-474 A LI"lE~ SUE IAREPS ! RU1,1OF COEEFI C J' Ei it = . C i1 L 1"14 . E Y^t 0 "1 ri _,1-11 J S U BA R' F-t-s 2 r\ RU I ~1 L1 f f L. V L_ I'~ L C C'J ! ~3 SUBAREA 4.6 ACF-:E'S ,IJ9€=4I=~E~1 C°CIJIIIO I`7' E.M4JE FFI k i Er-C i .9 SLi13AI REry -1 = . I G31 ~i ACI=~E ~i[JSPREII-'j -C Rul'•UFl- l; C~Cwf=-~ l 4' C 6 9~ i" - v rCi,1`i=)L i=11=~F- 7c{ L L1C'1F'I,]wi ! 1"i C ~[Jf~C(IE °C7 (:;[-iC.:!' C° I i~ L t I'; I ! . C ` 1"°• i a r . llllLD"l L9 f14IL) -1-110 VI^I L_UEL, Lt - . 1IS L = 5 .OF S = . 02 CHANNEL FLOW V()1_ LIES L cJ Z2 172 a N .za1.6 B D . 1 1 6 EONPOTI-D VALUES DUR 5. 00 1.10 _ 1.6 110 1 7X3 , CIA ^ 7 ^ J~ ! SClW,=;TR ,F I,I[ DA I Id - 9/'24 /9_,7, 1D1_ S I GhII.°'_R A~.. [`I .ka ~4L] I N ~11~1 I 1~ ON? l F S I'~T F'~ROJECT !'NAME = RI DG= ~S ICJOIR ~'H ° IH yD1)1 A 1 ON I ESC.R i PTION 1i1 1 r f S'1"O~" MWATER L.RI-1 L GE 'r o ON--SITE I V1° ~ PONDS) L. t Intensity Q,1dav. r., ,'ClLit S'C,_)raq (Fl, In. i (Soar. } (irsz /hr,. } 4C_. F.s. 1 4CL6 . Tt, } (CLi, 4 t. I (ELL. ft. } r. l) T _.t_I d•1 _ . C] r 7G3 9 l_I i77 43 7 2 0, . 'j 1210}C1 1 . 145 r:7~ 46 e. 1 :71 2', C) Jtr(jcj -7 70 . Cl) 1800 00 i . C4 .25 =as. 40 -57 _j 5 2 } . ~_a 7 d_l i_1 = F . 1€ l y] : _ t1 ^ I E0. cl -3('10C) .37 C n d~~ T del r-a c LF ~'S r 16 t { } 7 5 C 15 ra 15 a d_} - 7t 1dw1 60 1' _JtY 1 a + I . iS_i 7s 7c) 0 J12_1i}d 1 58 I9 I =4 5~.}d:I eta . 14 -7-27 90 . 0 4 S C) ? ~ . - 1 ~ 1, q.;¢ 14 40 -Macs 85.10 5100 . JM 0 1 . 651 15 30 - :,7,~ :-j . C) : I I I;1 C) .19 1 `s ` ~f L I 'I n - 3 ? 1 , 1. C-) C) , e s 600() . 48 1 f 1 f)C7d, THE i 3A X I f` UM STORAGE f S 22'1 . 9-F.= 4 CC2 C•!J r 1'71_. ~ F'ar,~~ GA VOLUME c~ t3 ' a~'1- i #51 av. FT The time o4' concen tration i=, _5 mintate5. Tha- U dev,=1 oped 1 ow o,.%t is . d c:. •F. 7 -ryre ••'a., DF_4wFELj_• Ill-EN YEAR 5TD I-- r CAL C ti j f F•:A"f .COI~IAL_ f=ORI"IUI_r-, HY DF:QLUC-3`r DATE = 9/24/9C DESIGN ER = D.H.C. LtF;SIN 50 F'F W ECT NAME = F:I DGEIIOiN T ESTATES) NORTH - 5 i•H -ADD I I 'A' ON DESCRIPTION ~ S 7"iJFtMW~~'I'Eh • 1~1~P~ 11Vr,GE TO ON-SITE FONDS CiUERAREA 1 = 2. %4 AC;R,ES :3U8 f-I I- L'EA ] RUNUF C0i - I C 1 EI•i 1- _ SULgAnEA . 069 ACREIS SUL~ARE " 2 RUNOFF %(_'•i:: F F= ! C I EM -1 • ; C;ULir,1=\'EA . 1 °.3 ACREc:i SIJF3r-)I~Eri h, I.J;,IC11= F= _ = C:',Ji=F I C: l EI 1 ] 'r' lIJL•AREA ••I 21. 1? Fc.. J S IJbi'.\, RE 1l •I ,°:LJI~,r~1 I" I:I:Ji FF ~ I N i - > I"i7'I AL_ r1F~l=(; - Ti i c,i is i C:0ly;l• O::i L I'! !DUI iC11 I' I- 1=• 1 11- 111 OVr1=:Li;,qD FLOW VOLUr= a L 1_ 1 1 L I::I-11 1 N IE7L 1="L UW 4'.=iL_LllrS L Z.1 16 ' ` (_Q. -OMF':-!I-Ef) VALUE'S D U R 6. 2- I10 .4_.8) 9 c~ C• i~S C! A ; cj, r+DVJLI_;-I R r 14G r'A, I _UU1. Al I i 114'-; , J,••, i r:_ 2 4 i , D i. r:, J U, IN E F; Ii . hl . l _ E : r J. 14 It D i-'r1 i+FEi; T i Jrii ( E _ i=i 1 ~t:icii(JI\i~ E "T„ TIC' NORTH - •`_D rI A i) i I' f r,i rIt 1. PT ON _ rrllimi•!F, i I={ 1I:Ir,r,E: rte (7 P•1 : £ -1 c r"r~r I)r} t t Intt_r:,Eat V 0 dr`_- (rr,1r,.) (vCL_. ) O -1-1 r.) (c „f.s.) (hl_,. ft u) (Cu. s t. ) (cu. ft. ) rJO T / •I L~ o l_14r -Jt, '1 C C_ .J J'1 1 ;.C; 9C)t, 1.77 L;•; is,Q ;L L 7V 1'=?lYt, c, i 1 - 1 :ICI J_ 7 'O. t:) 1 £74 it) I c-) f . 75 11 r,)4:, 4C), C) 2 4 C) C) t ::J.iY 2 I0 .74 7 t'ti,.,A _._1t) _fYfni DC; ",19 1; _r'f)•) :-1 -5. 0 u C, C)'1 -1 j, I.Ji •1• .:1_lr%'_, l16 i_+ (J 0 . 60 1 rl t) 7 i) - _ LJ 1 /l), 4-) 2, U~_Y . 150 15701 .6.JV r 1. t) ^?.J4 )L) . lb I•i/ - IC.+".t ~~1 )..Jl, -j l_14 rCJ 1i£3tit:) 1;:17=1 :+:'ti GJ . C) ~J 1 t)4 Y . .J'_ . 7 .1. 7 _ ) ii iJ .'•l , "i fJ V'i (?i),it ;jtltii) X41 =6 117, £7' _1 9 IJ e. W) C) 1 6C c "I l 1 . I l 1 i.) TI-Ic fi,-;n I MUi1 I Uri1 :GE - j:j•i ,..:'Li' -'.S CU F I'. roND 5Y~ vot-uti,E 8" DErT~i The t:i''„f!' of At l:~ ,Tlll-lt_tt•?= I'I-il_: Ur dc-volc_,pe { i low ot.tt 1 j~, 1. t... i . C . TYPE +A + T`lFE •0) DRywEL.•!•.S i-mo ( -rrlc',rn r,zv r, m 1 l I"A I01\1Ir-IL F CIt~hILILr=I H'Y'1_ RG)Lt-IG 1`L`-_ Di*7 131G1'JF: - 1).hi.r_. I' F'{ICIIJEC_ 1 PL=11~IE = F~ 1 TI,CIE1°{C)i~ I 1.: =i'i Irl { is i I`JC11-; fh i ~`i [-I I"1 ii11 i i` J Cif DESC R, f F- 1` 100 EX ST 1 1'JG 1-71 _0. W F*RON CaL..D "I t i L)GL• H ON i L:i r, I i=:'r' " FiUi3Ai- LE J - I . 1 2 ACF%, S SUBAREA 1 I -%'L1i4C'1F= F ED;i= F ! C 1 = CiiJB riFiEr; AC` F.S .iLJEtPiR'Er"i ' i-CL. NC_I 1= C;LIL F i J C' 1 k:i l I' - _ 1 T C1TAL. Al-(L.A .21 ;'I C: h:L_!ci C'lJf"11 'i.1;:i J Fh RIJi'1i:11° C;C11:~( F 1 ( OVE!-","LI=`IiJU FLOW VAL_UcFS' C:: - . 15, L - I511C)Cl Iv = .11 CH of illL l_ 1=1__CM VALUES L = 70-0 1` D = Es i Ci 1.)U.R = 14. 1t-) 15C) - n - C~. =i4 DATE -4! 12' ! 9.4 DE-SIGN ER _ D. 1-!w G. L11" PRO),_ ECr NAME ~ r--; I nt_iEr1tI'Al DESCRIPTION = EXISTING it LOW FROM OL.D "f~iD7IrMC1r•11" i ~!'i'±fE:r=" :rl.i L ~r,R rt 1 -.4,7114 i-,t..i1_r., _,t_I Ic •r 1 . • Erl .1. itilJr\iiJf ~ f: i~t_)1= i • 1 C l't_ NT - r c ~LJ2A2 rti " . ~ ^•-.r r'. t .Ii ~r ; t E f~ ! l1•.. t1-_.-. Cr.,.._..-. R n , l~:t.J'~~r :3 U Cc 1 , r+rr- r.. NT 1 , {"T CI 'Al- 1-11^1Lt"1 1 1 7) • ~ 7 ( 7 ( / t t 41~1'l l"'•iJ J J -1 L_ \tJl x1-11' l_•'.~L 1 I~ l_. A. I_:.I~•~~ u J J..J ._!..!"f _ i O.11=_PLAND 1=LO 14 VAL-UE'=i L 1 10 c,l _ 1V - s = U ii (:1111,' \1EL. 1--1--GIVI `':"IL LIE i L "(l0t,l 1 .•E, 1 1:_' cf S . i 1,.3 I- D - - - L"F1ihF'UThC) VAL I_E.; • I`,1 r • r ` r J I G? fa = . 1. 1 ) ,I CAPACITIES OF CURB OPENING INLETS BASIN .SA: Q10 = 0.78 cfs to 10 LF curb opening to Pond 5A @ Station 20+40 of Sonora Street, in existing curb on continuous grade sloping downward to the north. Refer to Figure 16 of "Guidelines for Stormwater Management" L=10 ft. a=1" y=0.156 ft. a/y = 0.083/0.156 = 0.53 Qa/la = 0.077 cfs/LF La = 10.1 L/La = 10/10.1 = 0.99 Q/Qa = 1.0 Flow Intercepted = (1.0) (0.78) = 0.78 cfs Flow Carryover = 0 cfs Construct 10 ft. wide curb opening from Station 20+40 to 20+50, Right side of Sonora Street. BASIN 513- Q10 = 2.08 cfs to 7 LF curb opening to Pond 5B at low point, ER 14+82.32, 21st Court. 0 Refer to Figure 17 of "Guidelines for Stormwater Management" H=0.223 h=0.5 > Q/L = 0.33 cfs/LF H/h = 0.223/0.5 = 0.446 ft./ft. @ Q10 = 2.08 cfs, L=6.3feet Construct 7 ft. wide curb opening from Station ER 14+82.32 to 14+89.32, Right side of 21st Court. fl 2 _ i 3 i +rt'r 3 ak^ ST. i I r~71 •'~r ~ ~i ►~1 tidy 14±44.32-/ 1 L. I Curb 5i'13'Z7' j Curb 94 7.0.04 i ► ~ ; 85 Zoo ago ■of~ D3 ~ t- ~ t$ 93 ` 17 ■ 19.3`1 CID !'7 O1l 1 t L a X9,7 Z 01 1 00 t Building Setback p Of 95.5s, ]U' Utili Easement - 104.79' 7.82' 2s? I -F r C14 IE459.32 1 215.00 r- # i 3Zfi i 89'20'22" E Y~ to c E'~ 93• O k3 • ~ ~ 10.00' I~ 10,'. IJt3lity Easement r'r7 I TS' S7' dw.vhyyaC Pi.SCr~ntf 1 _J I---------- Building Setback Korb FIL • 120.00 G~ -r: ,zm.00 to L ■ 13t.~L r CV 1 'It 3. 2 0 73-03- 3: C%&rb CO S4'YSi77' ro -20-00 ay 7i ■ I a. 14 L - 19.93 ■,93 ~ C 0 to O] STOPPM~G 1GHT" 1)1ETAWCE FOP, 29 ~-Rr CoVf27 A-S yr ►°1-no►~ 5 HE71GH-r QF o[,,-,Er.T L' j-ow I os "T = 5 FT DFIVEZ'; EIfC HEISHT 6 ~ CU1_-100--SAC = 3.5 FT. C 6 upur - - a - ~ - UJI - ENr- - = ° --F ~ - - - OF e. nt N - ~ Her KT = em - - - - - - - - ti _ F . ~ _N l ; ~ _ N rFi F s E H 6wr 3,5 FT, s .e 8 " 25L~ 1 4 l la 1 ~ I~ 1 00 Ol l'7 a 0 V) NO-4 U) P -7 jai d - - o j I" I SIGHT DISTANCE ANALYSIS: 21st COURT For a car waiting to merge from 21 st Court onto Sonora Street we will make the following assumptions: 1. Driver's eye is 16 feet behind the gutterline of Sonora Street. In terms of street stationing, with the centerline of Sonora as station 14+44.32 of 21 st Court, the gutterline of Sonora crosses 21st Court at station 14+62.32, thus the driver's eye is at station 14+78. 2. Driver's eye assumed to be 3.5 feet above finished grade. At centerline station 14+78, the finished grade elevation is 29.88, thus the eye elevation is 29.88 + 3.5 = 33.38. 3. The centerline of 21st Court is at Sonora Street station 19+57.56, so the driver of the merging vehicle is at about station 19+60 of Sonora Street, 34 feet right of centerline. 4. Existing ground at the intersection is at elevation 2030, and slopes northward at about 2% to 3%. Thus, the natural ground is about T to 4' below the driver's eye at the intersection, and therefore does not obstruct the view of approaching traffic. 5. Sonora Street is designated as a local access road, with a design speed of 30 mph. SIGHT DISTANCE REQUIRED to turn left onto Sonora Street across one lane of traffic and merge with traffic from the right (refer to graph on following page): Sight Distance to the left: about 310 feet B-1 (Graph ) Sight Distance to the right: about 375 feet (Graph B-2b) SIGHT DISTANCE REQUIRED to turn right onto Sonora Street and merge with traffic from the left (refer to graph on following page): Sight Distance to the left: about 375 feet (Graph Cb) SIGHT DISTANCE AVAILABLE TO THE NORTH (Driver's right) Distance to see approaching vehicle: over 375 feet. (Refer to attached sketch) SIGHT DISTANCE AVAILABLE TO THE SOUTH (Driver's left): Distance to see approaching vehicle: over 375 feet. (Refer to attached sketch) Conclusion: Sight Distances are adequate in either direction. Reference: AASHTO - "Geometric Design of Highways and Streets" intersection sight distance at an at-grade intersection. 70 6s co SS SD ,s aD !~S 3D ~s ~U I o ~ 7c iD r E Io m o I n inn Afin COD LDD 10 n=~ DD UO IZUU I4DD of S coil D:SI sn'C [ of [ l l 1L- SERI DISTANCE TOR P V[H,EI( CROSS11:G 2-L"'I N,GH► tY F RDW S1 DP. ISE E VALE W)' E-1- SIG';I D:51 R1.'CE FOR P 1'EH)CI E 1 OF OJE, LI F 1 1-:10 ?-LINE 1i.CW0 ACCRt1SS P %,[H;CI[ tPHN-CHNG FFDV LEFL ISLE D14MM) C+4! mo4Mbdlcn SINN DISItt1CC FDn P %'EH;CI[ 1URP!RG 1EF1 D;10 4-tsjr H'G!'.►'ti trCRDSS F v[H:CIE APPPDLCR?-'G ROU LEF1.ISEE V!LCk ►,1) 8-2b- S)~1 D:S1/.NCE FOR P VLH;111 ID IURK 11F1 100 2-11,N[ KGH►'RY JxD 91I0,: ES-/ Of V[SiCq SPED *71HDA E1r)G O1'LF1111N BY It V[HiRE tPP RURCH!r:G FRDv 7H11 RrGH1 P1D'J1r:G SPIED FFDv D[SISN SPED 10 me or DESION SPEED.ISEE D:LCPW) CD- S)'til D:S1 PX1 FDA- P %,[H'Ct t 10 1 Up r: KH1 Ir:l D 2-L&?.'[ WSH►'ti' AI:D Iti I / )r: f OF D[ Slur: SPIED VIIHM bit:G 011R1RVE EY t V11i.:LE tfT"C)Ll0':G F P.Uv ur an jI:D mm,v:6 1 F::lv ['l[ Sv: SpI l D 10 f l% Ur DE 5::11-1 Sri CU. Figure IX-40. Intersection sight distance a1 at-grade Intersection (Case 1118 and Case IIIC). 3 O n R sr h z v, 1 L - 6 wma a.av . to A6. D p.n r b y,p..wM• L ,o•ae, _ Orlwner Dar Oar r 610aui i ~ ^'Or1 . 10l tw. m, u U I ,1(r l wn ii v wr a / N. CDAPMC SCALE ON rICM I I i I II I D L] SO 1 v0HtcJ-E APPPoACNING Fg•om N c" 1 DiSrAkcz = 4oo FT', Dwr. ~i nr~i..u.J ~r.ia! ~I ~_.r 1n•L1 1! ~ E D~r~.~ 'PIP r ow+.a I(.r ba,.o n Ce•.nauc. Cw Oaer• 1a Ia.fiwl.•M.ff, _ r a..... E ufl w. Y! ~•r•-e.e•a oae.nl,~r. •w• t0~ I s.. ~l.ro arr. E uuDw •I • 0✓ Ate. ,,.rr •wk I.Iw bfe.• a7 ~ • ~9E OwwMC FWD •5B R•E, e/ w N • 1!, I M•w'Ie l r c f1UOrI I M•epp .1 R. ~ F ]a•a.a ]c I TMrDwI aw bb.D ~ I 1u d Go D.s Iaa Or+w1/bo ' Fj z %f vE:HjC LE A-PPAOACHIN Cq FROM SOUTH plS ANJCE = 4,00 FT, MfiR<1^IG Vtli1CL. ; AT I>J F.-_TIO^► I saIrzwzr~ E'Go SPOKANE COUNTY, WASHINGTON - SHEET NLJ (Joins sheet 67) k 44 E I& 45E -`f°'I _1~~I~ ~ ~}f~,{'_Y-,»sl'`P.~-F_~ ~Jk'f__i'-_ __=1 ~E,~,o . 'I'{1 I+" .•~~~tiG f"--~=r' .1 ~~.•l;'' ~I +~rr'!~' + I 5 e~ $,i i,:r_--r~J*!{j S r I ~~W r + 'f ^•,l,'r~ •~~1,0 1 . S .ia I.• ~ :1'..1 ~ k ~pG+ 1, -j. CHICAGO h' L ,lei • ~r r~rr' :IR>i1L L►KE~• i'° i• 11 ° :Si' ~ALl7. ; i~'I • ANL7 i , ^ 1 r• . - l`+s,~.;sj3; Ilcr ? 1~ r vey rs r d~ }fie ? r I : MY! SP 4 ; _ I " r C 4Y hp r F , pr j'''f "PSl t y f I+ y l + yVr hl _ _ ~ ..y ~F` ' s r j§ ? 41 Ll M1.i.,i I _ r ]S ~.r~i, e"1 Y ] 4?+ ~t SLR h J l i, Lu~u J .Iei' s~rP "t'I at, ly-. q ~ yl P'°A' a' i ' d ' s r I . } •a• ~''ij - , .la'+• 6 ~m8~r ~CinC^ryL ~-m+Ei y,, d=~'~.t L1.3 4 s -q • 4'• h cui4r++l V?i91ey +•.,A- ~y~'l: • xill'. ~;oaF~.' - i - rub ~ I Sclluul - ~m1,g • ,~PsA' • ~ -•~~dl~,--'fit. '.,"1,~' " f , f ,I - 'qty _r• g: .S; } •l r J sir I ,I h lip. L. ,'M1'Y+' =i• •p,• aw'Y ••1 ;,.y• 4`~ f.3 'I• r'7~ rG~Uy: G CL ry[It Y rIr R 0 i '"•9"•'° S . t , l ,P 7I~ 8' r"' •I I~ ' G T , ••4i° A I~. ~ JF lllrti i Srl ,'~j, Vr ~ v ra. FI~~ - 4+ GrpB y l ,o a IisH i35B S I r.r~r r •i1S •7>~. ' -x.44 , CIY~~ , i , n•~. ; ' ` 7 r• .l ' „ 1JhU RSd ' 6aG 3st3 'SAB _ '~r: Ste' y~~!~ ! ' 1 a.` ' fPA r • "1 L4 uilfi cgs, GL:A AT. 10 d , a , ly r.. S . , 19 ~ + dale ~ r t.+~ - " ~f r ' ~ ~ ~ - 1 _I A 5 r , ~ .1'x'1 I ~ . , ~ - • Pik it ayr •-p y, tif114 N pB ,1 ii,•c ° ;r,;rR' ~ & Ii + rl I" I' •`S~' U r r, 1 is, 1. r h 1r• f ~SE7 C'tl np,; f~~ I, ,a 1~ I Ik 7 ' rr-.. rs•r 0r. ~;+R,,,t333': r. a 1 . , ' IIr it • , • fRNil Yi_7 ^~wL 7 l + , • ri ' u, it sj I1 , r L. ' + Y t + ~r r t ;fit! r ~I L~"::'i Y • ~ GaiB r Cub f 7 _ ! ! ass ;r "u • - °i y,.~„-Ra,r. ; y • Try4r r`~}-', , 1 ~.11~ i rr "~~'y,{~,• '.4 d r ` ' 7fL'7'rjp I` yv' G j~ l h t ' Lrs F Gr;d I *7;;, • d ; • f I r, : ~ i r r Y r rx l k,G$A, ,4 1. r :i+ r : 1. , }4'.~y~ r;F4' t...Y: • 4 h'1 { . 74. Iq jig h• pr Il i 51° [j CUB " + t' ~':~r r',-'• d I., I ,a- im91i f'o a ;fi g. ;+'i.~ i • +•r a ` • q' ,Ea k II PSA ~?;yi `s •~iti w 43~R i1,il'mY~~L", 1 fr4 Z j s: •C. ~`x a r:lr Jll;.;~'' A i r• r AC Pg.~ ~!1 •Gr3& . u t - ■ r R P n. a ItiSf•r~•Y• i_a; r+ .d " ' A~ C GW .4rt~1 + ¢ s~j, ~tiyCi~Ilry' GBA g7e UU • l; e1,;•1`~p•• t •'~r'~14~' 11~~y~ 1 )'r -~j Y,7-l.s~~ ■ dt3 • r 4 y L ~w ft i+F ~P PsA °4 4 e' er '1 GHA V L c~ r 4 •1~ lair sl-r°.ry~y'• .al " 6 u` Psa rsr~. t i Ft', f ` Bab ~7~G• i~ t, •Ck~~ti q`' 17i;' "I ssc ~a 4f'° , arr. r „ 1', . ~r' Y • ~ • rl 1 ' i,I j " ti ;CrSg _ s"c'= I a.~ ^ snB A Sp~t+• ,,+•i'~ f s w~ , '''>;T etSC r! •r ' r s , r r ti Yr'• ~p a1 `r ~i rw r h r. +,r. Zyt1 i IIl` >tt'~' 'ham rKc K Bab % I~ v 1.3 .14 7 1 i y r► , 1T 1 URi3 r X L ' •~~}'fir'" ' I t it $5L' a ` ]J 1„= r ~ ' " +1 ~ l.5 t kY h 4.'t'` L}~ `~~1..+y 1 ~ r U 0, ~ a G ' tit i~i•' , ~+r.~ ~ : / rwo4 ` ~rj~•~~••,!„tt,'~. p } ~~1~. (T`I BdB 1 4,,!' 1 r.:tr• •4 ,..1 t :7,~ •;y..•;'~ R~3,~ rrl-`- ~ ~~:r ~ +ui• _ I r~.. +.M 33 (Joins sheen 85) ur,u f t 1 ~ 74 SOIL SURVEY T.tbLL' G.-Bnej deouipliutia of dull., and dill NILLP symbol DsC DsD DvD EkB EIC EID Em Fa B FaB3 FaC3 Fm GaC3 W" G g B GmB GnB GpA GpB GpC GpD Soil Bate Dragoon atouy silt loom, U to 30 percent slupcs. Dragoon stony silt locum, 3U to 55 per- cent dopes. Dragoon very rocky complex, 20 to 55 lerectit slupxs. Eloika silt loam, 0 to 20 percent dopes. Eluika very stony silt loans, 0 to 30 per- Cunt, slopes. Eloiku very stony silt loran, 30 to 55 perccnt Slupxs. Emndent silt loam. Freeman silt loam, 5 to 20 percent alolxa. Freeman silt loam, 5 to 20 p erccut alopea, severely eroded. Freemen bill, luam, 20 to 30 perccnt alopcs, severely eroded. Freh water marsh. Gurfield silty clay loans, 0 to 3U percent slope, severely eroded. Garrison gravelly loam, 0 to 5 percent slopca. Garrison gravelly loam, 5 to 20 percent alopea. Curribon veiny gravelly loam, U to S Percent slope. Garrison very stony loam, 0 to 20 percent alupe. Clenrose silt loam, 0 to 5 percent slopes. Glemroae silt loam, 5 to2U percentalupe.•c. Glenrose silt luumn, 20 to 31.1 percent dupes. Glenruac silt loam, 30 to 55 percetiL al opus. Depih Descriptiun of aol and auc frum aurfacu Similar to Dragoon ads loam, U to 3U purccut alupes, except that the awface layl-r to atuny. Dragoon part similar to Dragoon bill loam, 0 to 30 pereUmt alopx:a, except that dt-ptll to hed- tuck ruagl9 from lU to 20 imehea. Ruck uUt- crup included tit thin cutitplc-%. \fcdittnt-textured, well-dr:umed boil formed from glacial till cott:unnig a large :umuutit Of Vol- canic mtah in the surface layer; ttnderlatm by gravel at depth Of 30 to kill inchca; uccupics modulating, muraint.likc tupugraplly. Similar to Lsluika silt luaun, U to 20 l,crecut alupea, except that they are very atuiky thruughwtt. Alediunt-textured, somewhat pourly draimwd, ulkulimc suil funned in alltivimtit from calcar- eous silt, volc.nmic aah, aid diatunitc; depth to water table Ilucltt.ite frunn near the aurf:,ce to about ki feet. Very duel), moderately cell dreincd tipl:utd sumla tt•tth mediwm-textured atirface layt.r and wcilr tint or moderately line texutred amhaod; fursticd from adt ou rullntg to hilly uplantla. Slutllow, att•in11 V, intt•t'nmittettt pomda aid fringes ttrouN lake that have a Ihmettmeting water table. L•'mgi tecmiul; data to tit given, as lend type in tau variable. Very deep, well-dremed boil develuped in loins un tidgetops awl kmuha oil the mulling to hilly upLtmntla in tike Paluuac bull arca. Gravelly, tnediwn-textured, aomett•Itet cxcta- aively drained auila formed mo gravelly glacial uuttvuah material from a variety of acid, igneuua pnrctit rock; um nearly level to mud- cretcly alupimg tens,cua; depth to titixt u•e of band, gravel, :md cOhhletunca ramgca from 2!: to 5 feet. Similar to G:m•riamm gravelly twin, except that Lite autfaec layer in very gravelly. Similar to Garrison gravelly luau, except that the aurface layu' is very atuny. \'cry deep, medium-textured, well-drained suits furwed from ucid igiacuu-, glacial till; aurfuce layer haluumcu l by lut-a-i and vulcuuic a.,h; un gently rullimg to stccp uplumtia. l,,. U to _4 24 to 44 di to 53 53 to GU U to 26 26 to -I1 i 1 to GU U to 22 22 to 72 Uto h S to Y3 23 to GU U to 15 1.)to44 id to GU U to 15 15 to •1.1 •H to GU 0 to 72 CI.J..vmticuUOa Silt, Gravelly lu.mt---_-- Very gram cll) z.otdl• ltlell 1. Gr,vcl____----__-.. Sat luau,---.---..-t I Vvy ilim aautly luaw. Sandy cl.,y lu.un_..' Sill lOaw_ Silty clay lo"tu...... silty cl..% lu.ltu___.. silty cL,y----------- Silty Clav lo:um...... GravLB%' Vcry gr.,tully luaw.. S:und, Kmav,•l, uud cubbleatunua. Very gravA.llr loam. Very gra\ t ll v lu:uu. feud, gr./vcl, md cuhblcatunea. Solt loanu_____._.... I : -4 • A. Triangular Channel Analysis & Design Open Channel - Uniform flow Worksheet Name: Ridgemont North 5th Comment: o. 4 2n • • ' tion ; i 1 Solve For Depth Given Input Data: Left Side Slope.. Right Side Slope. Manning's n...... Channel Slope.... Discharge........ Computed Results: Depth............ Velocity......... Flow Area........ Flow Top Width.. Wetted Perimeter. Critical Depth... Critical Slope... Froude Number.... r r a n 3.00:1 (H:V) 3.00:1 (H:V) 0.030 0.0700 ft/ft 6.55 c f s FKO rn ";cc nrC - 1 . E ~!N A) 0 Ye. 0.62 ft > pLPTH of Lx(--ntIG LITCH = l 5 FT. 5.77 fps 1.14 sf 3.69 ft 3.89 ft 0.78 ft 0.0192 ft/ft 1.83 (flow is Supercritical) Open Channel Flow Module, Version 3.21 (c) 1990 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 4--12--94- 11 11 j -v - Triangular Channel Analysis & Design Open Channel - Uniform flow Worksheet Name: Ridgemont North 5th Comment : ' tc • o No th - 5th to 3r • d • . t N • r h)]' Solve For Depth Given Input Data: Left Side Slope.. Right Side Slope. Manning's n...... Channel Slope.... Discharge........ 3.00:1 (H:V) 3.00:1 (H:V) 0.030 0.1200 ft/ft 21.92 cfs 7 Y 85' 4- RE'NT-'-Z/ A55vME CoNCuP-k~ PCIAK Computed Results: Depth............ Velocity......... Flow Area........ Flow Top Width.. Wetted Perimeter. Critical Depth... Critical Slope... Froude Number.... 0.87 ft y DEP7H of exISn"G DITCH = 1.5 Fr. 9.55 fps 2.30 s f W 4,r IS g60yt(a P a i E VC, D t Te4 5.25 ft 5.53 ft M Mvtoe, £eoSie-1 Peoismrtoid 7 1.27 ft 0.0164 ft/ft 2.54 (flow is Supercritical) Open Channel Flow Module, Version 3.21 (c) 1990 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 i u* • w ME EA ' I A 30 foot drainage dement over that portion of the NW 114 of Secuon 25, T. 25 N., R. 44 E W.M. described as follows: Begin at the NE corner of Lot 3 Block 1 "RIDGEMONT ESTATES NORTH 5TH ADDITIOM'; thence N 55°33'42"W, along the Northerly line of said Lot 3, 60 15 feet to the True Point of Beginning, thence continuing N 55°33'42"W 33.30 feet; thence N 08°42'52"E 122.77 feet to the beginning of a curve concave to the Southeast with a radius of 215.00 feet; thence Northeasterly, through a central angle of 15°46'23", an arc distance of 59.19 feet to the end of curve; thence N 24129'16"E 29 76 feet to the beginning of a curve concave to the West with a radius of 70 00 feet; thence Northerly, through a central angle of 45'06'17-, an arc distance of 55.11 feet to the end of curve; thence N 20°37'01"W 128.86 feel to a point on a curve concave to the Northwest with a radius of 435,00 feet and a radial bearing of S 16°39'45"E; thence Northeasterly, through a central angle of 3°57`16", an arc distance of 30.02 feet; thence S 20°37'01"E, radial to said curve, 127.82 feet to the beginning of a curve concave to the West with a radius of 100.00 feet, thence Southerly, through a central angle of 45°06' 1 T', an are distance of 78 72 feet to the end of curve, thence S 24°29' 16"W 29.76 feet to the beginning of a curve concave to the Southeast with a radius of 1135.00 feet; thence Southwesterly, through a central angle of 15046'23", an arc distance of 50.93 feet to the end of curve; thence S 08'42'52"W 137 23 feet to the True P.O B Situate in the County of Spokane, State of Washington. d = 03'57'16" R = 435. L - 30.02 A> a = 45.06'17" 70 T 7' 55 11 ® = 15'46'23" R = 215.00' T = 29.78' L = 59 19' ICY) I P P B'.0 L = 15'46'23" R = 185.00' T = 25 63' L = 50.93' ! ! t 10 © = 45'06'17" R = 100 00' T = 41 53' L = 78 72' ! ! ! J m~~rv f~ R~~~~ br~Lif• fix:"',. S P :C7 X A ]V E OmcE of THE CouN Y E.NrGlA1M ■ ) ronald C.,Horraian k P E:; CQnnty Engineer _ Y 't = • .Y • - ` Y r, a ~T .2 4 WSl~ a" CA ' r i - _ s U U N _r Y A Dwt5i6 OFTliE PLTBUC WQRK5 DEPAR'nvIENT ~Uennis M. Scott, P,E.;;D' ~ r . 14 =h"►H S[]B Try ntio~+►T`'"1~+~+ri Ddb 411 Ir 's; r r - ' .y, - S +4cr-T;.~ "t'~ he e , ' ~ ~ :x-$95 r aG'a~' •.5 " i-X dY .L- `1 [ S_ r d• ~.~~'r+s~ - M rr~ .9fa GeIltlemen• st , _ - Zv<+-yl'~a< T ~a'S r a =fi r'A review~of the road nd,dramag6yplans for this projQ,has bee i3accomplished. Areas of ~ncei t us pare iii dicatiiiir~d the tattahed glan set ~ancl calculations mark i, , :y+,',#~`• •k. x x , ~ Y. y . 'y' -rt',^+•• ; t Y., -i ar -v r Pleases;make the corrections and-resubmit them,to ths office'in ard'er~t at I1ORIGIlVAL the review process may proceed. When the plans are resubmitted mark aH chap ess vai the revised print in color. f } ,please note that the plan set and calculations marked "ORIGINAL' are official public documents, and must be returned with the revised plans and' calculations. Review of the revised plans and calculations will not proceed until the ".GRIGINAU set is returned to the County. T If you have any questions about this review, please contact us at 456-3600. Thank you. Very truly yours, Ronald C Hormann, P. E. Spokane County Engineer 9~LD 40.- William H. Hemmings, P• Development Services Engineer/Manager encls: cc: project file reviewer (comments only) W 1026 Broadway Ave. Spokane, WA 99260-0170 (509) 455-3600 FAX (509) 456-4715 TOO (509) 324-3166 klwlflreview.1tr STORMWATER DRAINAGE REPORT for Ridgemont Estates North - 5th Addition A 5-Lot subdivision located in die NW 1/4 of Section 25, "1.25 N , 12.44 EM. N1 Veradale, Washington 99037 for Tupper and Associates, Inc. September 27, 1993 Lot Plans Revised: November 22, 1993 Report Prepared Sy: µ71f7139 _ Simpson Engineers, In e. RECEIVED Nordz 909 Argonne Road Spokane, WA 99212 FEB i 1 1994 r SPOKANE COUNTY ENGINEER (eeo o)f '400Vr9#.S STOR WWA.TER DRAINAGE REPORT for Ridgemont Estates North - 5th Addition TABLE OF CONTENTS '-I- Summary 'f`able: Drainage Basins 4 y "208" Pond Volume Calculations Rational Formula Hydrology & Bowstring Calculations Capacities of Curb Opening Inlets Stopping Sight Distance, 21 st Court Intersection Sight Distance Analysis S.C.S. Soils Mal) and Description Calculation for Existing Ditch r@ SE End Lot-3 "208" Individual Lot flans „208" Fond: Section Detail Supplementary Maps: 1. Drainage klap for'Ridgemont Estates North - 5th Addition I.. 2. Street flan-profile, 2 1st Court STQRMWATER DRAINAGE ANALYSIS for Ridgernorrt Estates North - 5th Addition A 5-Lot subdivision located in the NW 1/4 of Section 25, T.25 N., R.44 E.W.M Veradale, Washington 99037 September 27, 1993 SUMMARY TABLE: DRAINAGE BAS LN S Basin Name. SA 51,1E units Total Area 17,320 121,380 .1i. Pe moos Area 6,420 103,420 f1. 1m rvious Area 10,900 17,960 ft # I]"wa s= Area 1= 1 0410 3= 3 GW , ft 9 Houses=Arcs 1= 2,000 3= 6.000 f1 Asphalt Streets 7,900 8,960 f1 '20f1' Volume 330 374 euIl. Pond Floor Area 600 708 A. Fond Perimeter 100 104 hu 11. Pond Vol. U 6" 350 406 cu.ft. Pond Vol. al 8" 491 567 cuA. Fond Name Location 5A L-1, B-1 5B L-5, B-I NOTES'. Driveways are assumed to be 1,000 sq, ft. of concrete per each lot, acid Isouses are assumed to cover 2,000 sq. per each lot. Portions of Lots 1, 2 -and 3 have already been included in Drainage Basin 6 of R.E.North - 2nd Addition and Basin 3C of R.E. North - 3rd Addition, including houses oaa Lots 2 & 3 of this plat Conversely, a large portion of Lots T & 2 6f Ridgemont Estates No. 4 - 2nd Addition is included in Basin 5B of this plat. „208" POND VOLUME CALCULATIONS IN GENERAL, for any drainage pond with 4:1 side slopes on all sides, the pomd volume cats be calculated with two components: the volume directly above the floor area plus the volume above the side slopes. Volume is calculated at 6" depth for "208" treatinerit and at 8" depth for storage, as follows: At 6" depth: Poatd Volume = (0.5 depth x pond floor area) + (112 x 0.5 x 2.0 x pond floor perimeter) =0.5 A+0.5 P At 8" depth: Pond Volume = (0 67 ft depth x pond floor area) + (112 x 0,67 x 2.68 x po"d floor Perimeter) = 0.67A + 0.89P 2.68 feet - - ~i POND 5A Pond Floor Area, A = 20 x 30 = 600 sq ft. Pond Floor Perimeter, P = 100 LF Volume at 6" depth = 0.5 A + 45 P = 0.5 (600) + 0.5 (100) =300+50 =350 cu, ft. Volume at 8" depth = 0.67A + 0.89P = 0.67(600) + 0.89 (100) =4.42+83 = 491 cu. ft. 20 5 POND 58: Pond Floor Area, A = l/4[x(l4)2] + (l 1 x 14) + (16 x 25) _ 708 sq+ ft. Pond Floor Perimeter, P = 104 LF f Volume at 6" depth = 0.5 A + 0.5 P = 0.5 (708) + 0.5 (144) rt~_ -354+52 - ror~9Z7 = 406 cu. ft. P Volume at 8" depth = 0.67A + 0.89P = 41.67(708) + 0.89(104) 474 + 93 = 567 cu. ft Pond Floor I I RATIONAL FORMULA HYDFIOLOU'.' 0 DATE = 9/24/1? ? 1}L-..SkGNER - D.H. Cam„ ; 9; '11h1 ~,"f r'ROJEGT i`4AME = R I DGEI OkI T ESTO TiR N013` H 5TH r `fDD I -1" 3 0141 DES(wRI P"F J.0 i - S I`OFiM4. A I'Ek 131' A 11JA(3F: W UN-:J 1 1"1_= h'L11.11)S, SUBAREA 1 = w 1474 A CRExf 5 LJBPI,F:E a l i=if.li UFF CO::_'F `J Ca I_ E'i 1 1 _ SLJPAI ~E F, 2 Y 02 *3 cr--d S raU~~"-11 iL ~"f _ f;UI,,1017- :-~Ui~f fC E t=1 e t?=E 1., AC~ii1= T Wi iJfsfiE`ii Y1 i`si_J1 '°I L54_lir[=i=lf:? IW f i1 13 lJBAREfi 1 = 1,1314 InIM s SEJBA.1- EE-A °E Ru1\101--;, C'oEr-F J CI E1`4 , TOTAL 710 ACE E S CwC 1S 3 TE irE_1h11=1E`E E~[ i m I- C; 1 I IT 3F, 1 71 l111[F-RLJ-'jI111 FLOW VALUES % E,C; _ . 1 1__ 1J L 1 ~ .A l:'1 11-) 1% 1E L FLOW VALUES L _ -:2 2 172 N .016 3i - _ uOJ1 TD 1:r - m 1 E~6 rL114i1-11TED VAL1.1 1e;_5 IiLJ°ri C~ 1 L - .78 f-i i 17 0 ■ 0 BOWSTRING CALCU LATIONS ')ATE = 9I24 f93y DESIGNER 4 D. H` C. Fir=h~;19 A ROJ ECT NAME = R I LDGE MONT ESTATES NORTH `NTH ADD 17- I ON )ESCR I PT I ON STORi"iW A rER DRA I N(ASE TG ®N-,311 4 I-01-,IDS t t Intensity' OUTS,/. tr:L rl vout S t 0 r cICjF' Orin. D [ D . (11"i, /hr. ) ~C.. f.5,.") (CU . ft. D (C, LL. f L. D (LL1. n 0 C) .'i, is 312 W; 10 - 0 600' 2. 24 __11 B ISO 20A 15,0 YOU 1.77 4 -Z, 417:., 't 76 1 s 29 . C+ 1200 1 . 415 1 75 146 1 M 60 101 I -,C). t,] 1 Fi o u V„ 04 . . 2 4 r,3 i 6J /10 - "J I c . c l (DO l o o C7 r• k 1 G~ ~1 501 7^CI -219 Z15. C 2700 e 74 . ILI ~1p16 X31 CI U0 -41 SO. 0 C) Q C) .69 .17 ~ 1 S 91,10 ;W - r•0 55. 01 3-300 64 r 16 .J _ti 1 990 60 0 Z600~ .61 15 L ()BU 65.() 7.9(,)C) n10 a 1 1 1 1 1701 539 70 0 1200 .58 ~ 114 609 121 6 1 •6;2) 1 75.0 4500 , 516 .14 6'2 1 ?`.C; ---727 00. C] -11800 . 53 d 17, 6 4 14 LI C) -806 G5.0 I CIO .52 . 1 6;5-1E 151,10 --G , 6 90. 0 5400 . 50 . 12, 671 16'-:-(-j --9.,11.1, 9 .4:s 5700 .49 . 11 69,f 17 1 C; -1X71 6 100. 0 '000 .40 . 12 715 ].60C), - 1C}8 c HE MAXIMUM STORAGE IS 221.9454 072' G'f3. F 1 . paKZ> ~ A VOLUMa raz ea' boy I1°{ ' emu, F T, Fhe tidrya of concentration x5 5 rninutr-'S. .'he Undeveloped f 1 OW test x S „ _ e. f . S. 7 Ty m `P:, DF_,j JF_LL. 17.N YEAR STORM CALC .5• FY^f •Y1"t?~P~! = -LA'ffiCis:'..'u.'...._._ ...r,... . 1, ~ce ...L a? ti •r. , r' r . , RATIONAL. FORMULA HYDROL013Y DATE DESIGN ER = D„ Ii. C. DASIN 5L I PROJECT NAME = R I D3EMONT ESTA-' C S NORTH 15TH ADD I T 7 (3N DESCR I F'T L ON = STORMWAI ER DRAINAGE TO ON-SITE PCJ114DS SUBAREA t= 374 ACRES .GRUB(-'+REA I RIJI\ICC°1= E Q]- F F I C L E l',l T . 1.' SL)@~Pi iEA -2 . 069 ACRES SL1D AR FA 1=;Llitff=If C= Cf7L F^i f C L rmE l I E-,'UBAR EA I7B ACRE'S S UPAi--~FA _ F;E~I~frJC=F= C,1i-J- F IC:.I ENT i SUPAREA 4 = 206 ACRES SUBAREA 4 RUl',10P C= CeO Ef= F i C I EIS T = .9 "1-01"AL ARFA = 2.737 ACwI=tiL.S : CC]Ni='OS]. I"E FilJNUFI° "=I i OVERLAND FLOW VALUEE (7; t . 35 L '260 .4 L 14 CHANNEL FLOW VALUES L. 256 Z i. j Z2 = 1V . 01.6 P = 0 D .22-3 COMPLJTEED 4JALA•ll-13 I DUR 6.27 0 2. 89 C) - 2, 011 CIA 09 w r - r , 95 BOWSTR I NS CALCULATIONS ArE = 9/24/9,. DESS)IGNER - D . H. Cj. BASl J N 5B ROJECT NAME = h I17GEMONT ESTATES NORTH - 5TH ADDITION - C;SCR I P,1 1 C]I~I ' - STOP.MWA TER DRAINAGE TO ON -SITE PONDS ~t ?Interi Fi' y f,derr. vi 43 kraut :_k C.)cFa c- (mxn. 7 :,.r5~c ]b ' (rn. /hr,.' (c:.f.~: 7 ( t[. f I-, f L . 7 (r LL. '{•[.4 7 5. Cs 2.28 91-/ gg 6.2 )V ;;74 2.69 2.08 14j40 1[.). 0 ::60 Cs 12, 24 1.61 1169 780 Ma9 . CY y~CY[ Y 1.. 71 n 27 m+ 1~I 1'li_1 n I ° 4 r 20.o 1200 1 . 45 1.04 117-61 1566] --171? I TL 0 1500 1.21 . E37 141 7 9 _1) r I 30. tY ,`113(1)C) ' r •1. 04 .73 14: 0 a7ZIC1 -9011 75, CY .91 .6a 14 ?7°i 317 si 40. L? 2400 -B2 . "139 14U7 71201 _ l6s_. 4t.3 . <nY 11 ~ 0 + .74 a 1 J k' JY,7 l •I a.~ 1 [..Y ,.ry ~7 Y 50 c.s Z()()[:) .60 .49 152 6 r.3;CY[,Y f X5.0 :C3CY .64 .46 1574 4''9[_+ :_'716- 60.c) 6iY(_Y .61 14.1 16=•1 46001 --(14Y + k 1 6 5 . CY 3906 .60 . 4 171 zi 50 7 ~1 . ~ 9 701. 0 4200 8 .4- F 1 OCY J 5460 <<+ :6 75. 0 . 4if1 ~ 56 . 4CY , 1134 a ~fY -400H 13(1_). 0 490C) . 5L', y 1 137*I 6 240 4 7e yr i £35. 1CYCY 2 T" . r,7- 19 1, 66',C -44917 + 9CY, C;, i w ,r 5400 J0, t. uLz j 1903, 7C2Q 95-0. 570707 .49 ~ ~CY4 7=E 10 -5 _ a l 100. F.Y .60`)1.], ~r pi~4O+se i 3e _5ti1 0 r 7300 5690 I-iEI MAXIMUM STORAGE IS 55,q. 293-35623 CU. rFT 5Pa Sr,7 cu, Fr, fi The ti me e-f . concen trati an a s 6. =02CY6 fill nU Los,. he Undevel [aped flow (aut i s 1 . ~ G. f . s. ~ TfPE `5A+ -r T'►~E ~et5 TPW 5r1-r~r' L.Tnr1A r ai r• CAPACMES OF CURB OPENING INLETS 13ASfN SA: Q10 = 0.78 cfi to 10 LF curb opening to Pared 5A Station 20+40 of Sonora Street, in existing curb on continuous grade sloping downward to the north Refer to Figure 16 of "Guidelines fbr Stormwater Management" L=10$, a=I" y=0.156 ft. aly=0.08314156=0.53 Qa1La = 0,077 cfs/LF La= 10 1 Lila ~ 14!10.1 = 0.99 QIQa = 1.0 Flow Intercepted (1.0) (0.78) = 0.78 cfs Flow Carryover = 0 cfs Construct 10 it. wide curb opening from Station 20+40 to 20-+-50, Right side of Senora Street HASM 58: Q10 = 2 08 cfs to 7 LF curb opening to Pond 513 at low point, FR 14+82.32, 21st Court, Refer to Figure 17 of "Guidelines for Stoanwater Management" H = 0.223 h = 0.5 Hlh = 0.223/015 = 0.446 ft /ft. QIL = 033 cf /LF rr Qj = 2 08 cfs, L = 6.3 feet Construct 7 ft, wide curb opening from Station FR 14+82,32 to 14+89.32, Right side of 21st Court. s r 1 A .7 67 C~.rb IV 2-1, I p~ ` Curb 94 20.00 LJ 1 6L S5'®B, 03' LLJ 'T _ to. 24 ~ft• 20.00 i] L. 49.93 t 17 ■ 18,3- d n 4®`i a 11B o rn~ ~L s z9.-Jz °1 0) Building Setback 4 10' Utility Easement - 41'x. Z7~. ryy~f ' ' Q 100.79 7.8 I • ~3r4 + I ~q I 3 r, N 4'x tr t D ~ ~ i• ~r A n ~ 1. 215.00 E4±44.32-/' Sit' 89'20 i7E: Yr_ .n ~9r ~i_ C, "33, 0 1 100.00 9.38' ~•'A r~ ~r ~ 1 ~ Utility Easement ►(3-z7,40 U) -1 j `-Building Seingck 11;J • _ iCurb Co 3'27' 4 ~ 490 oa` oc " ~ K) R s '.9 0o fk s f 20.00 5 Cn T - k O, z# C] T x 120.00 K) L= 49.93 1 L■ ~31.4z r- b 4 L N 0 C3 C 4 Lr) C a 0 ST. V) - TOPPMQG HT ID 1,5T4, C E FOR- 2-1 A5Su ~rlar.aS. N0.4 y - HE71 GHT OF 017,JCC.T e i-OW Pal r,1T = 5 Fr. DRIVFZ', E`TE HEIGHT L CLJL-T)S-S C_ = 3.5 F7-. Cal _ _ r 1A L) _LLJ -ILA , -0- Ex sin Gran NT- ^ n} -1- k S T. SIGHT DISTANCE ANALYSIS: 21st COURT For a car waiting to merge from 21 st Court onto Sonora Street, we will make the following assumptions: 1. Driver's eye is 16 feet behind the gutterline of Sonora Street. In terns of street stationing, with the centerline of Sonora as station 14+44.32 of 21 st Court, the gutterline of Sonora crosses 21st Court at station 14+62.32, thus the driver's eye is at station 14+78, 2. Drivers eye assumed to be 3.5 feet above finished grade. At centerline station 14+78, the finished grade elevation is 29,88, thus the eye elevation is 29.85 + 3 5 = 33.38- 3. The centerline of 21st Court is at Sonora Street station 19+57.56, so the driver of the merging vehicle is at about station 19+60 of Sonora Street, 34 feet right of centerline. 4 Existing ground at the intersection is at elevation 2030, and slopes northward at about 2% to 3°/0. Thus, the natural ground is about 3' to 4' below the driver's eye at the intersection, and therefore does not obstruct the view of approaching traffic. 5. Sonora Street is designated as a local access road, with a design speed of 30 mph. SIGHT DISTANCE REQ1.TIRE ] to turn left onto Sonora Street across one lane of traffic and merge with traffic from the right (refer to graph on following page)- Sight Distance to the left: about 310 feet (Graph 13- t) Sight Distance to the right: about 375 feet (Graph B-2b) SIGHT DISTANCE REQUMED to turn right onto Sonora Street and merge with traffic from the left (refer to graph on following page): Sight Distance to the left: about 375 feet (Graph Cb) SIGHT DISTANCE AVAILABLE TO THE NORTH (Drivers right) Distance to see approaching; vehicle: over 375 feet. (Defer to attached sketch) z SIGHT DISTANCE AVAILABLE TO THE SOUTH (Driver's left): :Distance to see approaching vehicle: over 375 feet. (Refer to attached sketch) Conclusion. Sight Distances are adequate in either direction. Reference: AASHTG,- "Geometric Design of Highways and Streets", intersection sight distance at an at-grade intersection. 7D ~a sD 'A D 3A 25 iG SrG*i7 flr57s.r~cE 1iCIE1i A- SUCH] DISIANIf TOR p VTH11f EpclssloG 2-1 ti:f p RVOILY fF01A S1V iSEE 14GRIM- E+ SINI VS1,W[I FOR P WKIM 1Ur;0,16 LEI1 11-1I0 2-L 4q fj:CHIhAY ~iCRf+55 F ['EriEL E ~APr Dt f►i;raG - 1~1~C~u iii]. [SEf A1~GR1.~z1 - - B+4(me+n,r,d1cn S1vli] fl1SWIf E FDh P d'I H;Cc E 1 Llnr: NG an x,10 4441.x 1H'f,F1'1`3* 1~CCRDSS P vf!i:fLf ~Pr'RD1 C~r.G i1F:Uu !Ei]. [5EE D:1GkxuJ 8-7~- 5f 17 1)t51►yr Sin 1° MILE ID 1f1Rr: 1Ei] tN] 2-14RE 1F CH RY A93 X171 t'r E5Z Or D[ SIN SPEED M11HD:]1 BEW DVLR1t+:f'N ET R ►'NIM APPROLCHING C 1'PDvIHr t11t1] RED~.1-1;G SP1(fl i1? D11 Bf 51Gfj SPECiI 70 851 or DE51u1.' SPEED- isEf D:e.GPt1A) ['7 - Cd- 5INI NSIP:EI FOR 1' 11HILclf 10 1L1;1; P1141 11-110 Z. 7-Lmll 1F'.'.`H►'e l' /,1;D 411411.' E 5% DI fli 5!G r, SPUD d 1 i7 i-i:1'J] U11.G DITRI AVEr; E Y R i'{ Fi.; L I Ri'I r'G1 I r;~:G ' FP.DV 1HE 1Ii7 (?.D HIDXf-:f ff.")o 1,I(1Vr; !+1'IIf} 10 f `..•A, tsf L1I .`s'~.f: Sri Eli. [T an S •L Figure IX-4Q. Inter ectiDn glght distance at zi-grade Inteis cllon ease 111B and Case 111C). y APPROA I FP-am No i -Ivr SON ffI L u 4S AT I $ =aT. 9 C-.,.T..#.. C r Dw a Wb c[ , GIs 0 ~ • 13,5 14 ' l.Cnwxl. tLH• TaLT ~ Te 1DL~ ~ I' ' ~ Tf I G 7 a r +R,f] J~ ~ H Er~IG ~+t fcr_Cj AT I ~7T ~ Tf G N b K,.rr Li n2z V~ 'f a i:SI [ 'W iw mow] r khwty Co n I ! "gip I i1•aiONq ~.~baG 14. s~S 1G¢La a J ' T 706 1~ ~n = 16, a 93 et~ 6 Tar.: a ~ 'r.',a~ Laaa. a 1 I 120 06' • ..ti --rr.o j ' ' RI®GEMON, l IN WAMr SCAU ON nX7) + i ' r r j~ ; / ry 0 !S SA 1 J 171 to I I (L j VEq4iCLO-A-P?AOAC41INCj FROM SOUTH 4-00 F-r, SPOKANE COUNTY, WASHINGTON - SHEET N1 (loins sheet 67) R 44 E I R F_ _ L~ A, [g ' TC 1 ILr I r~ ~ ~ ` 1,.~,~•~I P ~ _a'rSJA r}'*kf `•1.r''I -*~;:1 .'Ti'[I.: 7 ~ .'r~, r I'; 1 r 1i} T .Fi; 1'. :1d c r+ it^+ r : jR (JXE9• f1 I m` 'PI ,r 'rCIi~CAGd• 1 •p - ~ ~ t w• - ' ~ ~ il'` i ~1+. t.j.r 1yfs i #~if~•'j ~`~r i~',1jI'!y .r^' :i h J. fr''+ ] ~+o c+ 4 t `e ,gee i t , 5 y +1d i r6.'• - ' s e;l• '!E i,' ! YVt+p, ~ra Iti. L^ Irf+l#9•'+ 4~~ + e_ r CmI 1 rt '•yr. _ _ I! 1 1 (J ! ire. i ~ , F, s I ~'ti li 4l~+EI - t't d + • 1 .~4;rs 'YIt ~'_xJ,gqr ~t r~r'. ++.r,l +r.ryx ~~•'•4'~A .='`~,t[ f`]~ lia{6t.-!~r •r(~ } !1 r ~.i',+ ?$R..,Li' va 1 rki7 ,.;s,j' t' Ir?t ~i= Y I. til' ~d1 ~}i: N~ r .yw ~ , I i _ rr - ~ .r."f1:W.~_ r9~Y' + ?~'Y:I s•, ~ :i~ i 1,(tCti~tf~.r~jr ►q ~ ~ ~~t ~ ` e ~,+..1 I ,tr 7 ] Frt I' [ ' tidf1C - i l!4!~C£ F. r a J + Gr~6 CSC 'Ah; r niu i, J(x" ,ti • 1 ;J': s i.;r!'[i _i . I.;, [ n'!'+'' Ctantruj V411Y y: ~ I 4~+r+e' Fah F' ~r~ •.{,.~a~~ `tl+j +iyiIE [I I, ~ 1 rtiY .IS ,n, 4i ~i:jl ~ ml3` ~ . J ` w_3- , +fsA 1 1 s yn t9 p• T-T f i4 G(A FCcai 1-11H , III, 4.44 I 1 Ir• • 1 ,.i r' f~"'•+J 3i g r1{ _ F!y~. iiS,~ 4 'G F x • .o +I-f 5~ r3si3 RS - i. 'x~ LiG 8a6 RSA l' e':tf ~Ey~,l~' .ty, ~51.~ A~~ ,q°. ct "t',•1 ~ - ' ~ - r- 1 S+ . r I.^~.• ~ ~17i' e~y I1 i r'; ~ s i,' '4 ,1 ~ i ~y~. l' 5x~- .'r {s~ ''3:atir• ~I r "a f'1• ~p:.A "z, t ii r,7i~•~ t~ ; ' r tar{~jj [ ~ j ~'~I Qv ul1 s .i.' rl~ ~r :A f ; I , 1 ~~V! 4 r' •1 + ''w dJ~ ,r PLAT. ♦ ~ ~r~iiCY C~(~~' °e `a ~ ~ ra'1~, ~'r""-Y" .:yf ~ I I I C,yq '1a14~1~ 1• ~ f `-i F ° n-, ~iEt - :IS ,'t,' r ~ r ~R ° [fi t6 + hai3 ~ f'.e~ - ' .r `~1`'.. lf] F t;t ° .,P 1r t ' °!.r 'Y 1f A , r"' I f e.- 7Z t .Xf) .I ppyyi.1] • i:, '~~fc I, S ?,r~ +t 'i3r ■ P~+ Iti >I'.1. GQ" 1 a r, • Ai' 'I s I p(5 .,r "I+I:•p;y I ti f lei r ' i` i ' 1!' . Y r , . d I''t ,i ; .r I i ,p YF •I. r Y. r t f)5Ei -Q.04 ' ' f . Cu13 ;r . r' •d•ii ° il~'~ i ~y ° , r{ Grts13• iks~ 7 • 71 ~ E3s6 , ,t ;d,: "E1 a t-r,f' yls 4',. •"f r•A ;Y•," .j . i ' i e •r `a/ ~ ~27~ C+i rR.~.;~*i.+.c~•y+.+ , :~r w,~'Y `p' i 6, ,',r 4z _ :s ~c t,+", S1 r fy.! d ++R► 1. y1 of y, .e ° E urn "I yS .r~~ Gap rkJY. ! IIisY YSY*'. ~'Je'°''s + s,~l r~, ,T,'' ~t i~y.~3`ry. eJl~i ` }"mot i',^I ~ M ~ 4ri.. rlfi~t "`'•t, '1r, •1`,,.lY?''~• - I, .+~+jT~°^J1•• .~~•3. ~t~jva S' i= r -.arv "O~` `~„-.l✓ k~K .f)6 S% a(~~' [ +a;, ry°, x ~I a r.,A ` r I.6, Ml +~jjia'I I + ~f a[~/,',~.7 nt' fi' Y 71 IF1 `'1r''r 4 ui es ii, sl•,r! [I~til Z~`iT'il c 1,`.•r :lj cuff) a • ~iTr`„ ~il',.,+_~ •.',r'yy'l.Irsll111„'~e.f., II i• re Y C.I' rX''.:.1 J,' • _ _ .r ~'~r~r:~• r ~ '.dC'i[Ii3 r II'~','~ia,.'s ~l~I •'c') }1~IYw JA~,~., r•f'f a r _ r F. i II' {r~ I l PSA L jC e r f)P s ivSlG . +F rA ~ .I, ~.'i~• ~ I~ i~f,,,,Fi~~,'~, r~ J'a' ~ ~ yRf J..~~ ~ Iti, ~J! ~ "~.f'f"i~i ~ ~ . ~.e'~ `'~c~iar~'''e,~ "+47~-=~=--^f-~"r Jl'~a•~a~$ ~ i ~ ~ it Fr:~ F 9i`"~ `~~„s~'~ 'sr - ~ ~n a p• is rr.}+rr ~L I Yn _ I:t~+,P~l;'.l . r e . ~ i' !f ! • AFC . ~c + r+C ~ r`,~ r~ 11- ~I~ ~•~;"t7 r r ~ T .G86 , u ° ~A v 1 i Fr ' • U I d+ 1~ i `z r YVcA ~n° 'I -Iu ~C G1A ► WSA I f x`tit•;;A i } s PUB "~~1R'~p r" r~! „t►'rY' yL T,. art - N ''r a. Lr t L •i-1 ..c -t.. fl 4 •'i• ~5- s PSA w rl prT{Y I ,1 yr .hCry3~l`^t f)58 f~ G.- Paf) yes y r i' 'i L7 to . 1 , f •,,»yy of 4'' •"lY I' ~d ''I;: SsC r~l . , j ~~3r i,•-r• .ti :/:r.; ~:r•~, .y Cfi ~ A,, fir- , ? 6. I'LL Hh sI'SeIji'hi:, ~ h't~ I ~rYS• w. Kc H:6 ~ ~ a. 1~ CyJ 4 n r` 4~,`1 ~ •.r I~,~ly r ,s l iI a r' ; ~y~ . f'~~'.y~ ~ r~r- • r f r `S ~C1afC7 r+S' r" S•"~✓_.' b,~'11,'rS 1 Lf ~,~s 5~,`~'` LLF €j r [F 10A a ~;F= ~ t . Y 5~ a•,77 ~t~ ~L t•~ aF;a • :'fnrq~ij+ 1 + ti I`r.'~ ~Pr f [ ~a~',?',r j.• y~~i ' r~~~' h` Y• 1 std e: i{ e,1 t• A., F r ,y.r r, ,p e. ,A+ ;r'F j-'Y} 11 7~ `~',r. .r r s^ e Sp -•r Sr ~ ,ra'Gx ~ . r~i'1l i'~~' .ti•~ y ~,.s~y ~h~ ~'z 1 1 1 ~ ~ r`~ o (loins sheet 85} U110 11 . I 74 hIlkl) Soil name syas;tlol ' ' T-t1)t-1: G.-- Br•iej deatr•irt,liunn of autla strati (Lv SOIL SURVEY DeairLfltlun of -,oil aLld SILL C1a.s:l ttCatitla dJeptll frulll aLFPl aL4 l_ 71]_1 TL ■t are DSC DragOOLt stOLty sllL 10111Ll, 0 to 30 pLrcenL Similar to DL;Lg OOn alit Ioa1.11, 0 to SU IM-LL IL, t.r ^ 31Llpes. dWlleb, L'ACLIA Lll.LL tile aLLI f.L(,L la)'L 1• la ZEMI)'. DsD Dragoon stony tilt loam, 30 to 55 per- cunt Slopes. DvD Dragoaa very rocky complcs, 20 to 55 Uragoau part similar to Dr.[gUOll At laatlL, 0 to pt:rcent slolx:s. 3U 1)Lrcutu blopcz, LACCIA th.LI d1.IM1. to bS d- toel: r atgt.s from lU Lu _'U tllellyZ Buck out- erul) I11LIti LlUd LLL Llkia LWIll111L\, EkB lilotka SILL loom, 0 to '20 percent blopeS. 111 edlu ill-L4\tnl Ld, 11'L11-L11 M1I ed a011 IUf11ILd frulll u tu'_l-1 WIL lo.Lill--__------- gI.iLIaI Lill i.olltttlllll[Z'., L 1316L. alitutlllt of 1 ui- C1n11L' 160% ill 1114 bLLrf.LLL. I.ly L.r; lllldLFl.1iLL by t ='-1 [CJ-1-1 {_i P.s5 A) IL, Lill gravel it (Icplh of 3U to tit) MCIWI, WccuplL•s -14 Lu .~S 1'L ry gr,l►cily a.%ad) ulldLLluting, ulurauLLL1l a Lupu6rapli). luall,. :,S to t,0 l;r-L►- Li-------------f Etc Elolka very stony silt loan), 0 to 30 per- Sunllur LU lslUlka oilL lo,l11 L, U IL) 20 ilerLeL1L alol)Cb, i Lu11t blupe's. u", CL13L LII.LL tilQy u4 vLry atun)' Lluutlgllc)IIt. EID Elo'ska very stony bill loran, 30 to 55 percunt ylopL-Z. Em ,L•'indent sill loran. ltetitun)-tUXUlred, SOMLAVIl.lt poorly dr1[Lned, u to ?u 7.1( IU.,tlt alkalme bull funllU I LIL 1111L1.•,[[nl [CUILI C:L1C.Ir- Cons oil L, voleallie Leah, mid diatullAu, CIu1301 'u IQ -11 Vvr) 11115• a1ylE.1l' to wuwr tablL f111CLttatL1 fl'Olll hL.lr LILL'surf.we Iv.tut, to IL33Otlt 6 feet. -It to 60 t ].Intl) rl.L l' Ii1.11i1__. 9 FaS Freemun silt loll n), 5 to 20 perLelltt Wry LILe11, niollcrat Lly %►LAI tIr.L I E EI:Ii ti pl.wd auila u t5, 2 f SIIL 1W.Llll------....' alolxs. tt1LI1 [netllnlll-UAtured bits-face l.L]•Lr tlltd Illeill- FaB3 Frccmna Silt IOLLIII, 5 to ?U Ix_rCCnt Wil01 MULILr.ltl:ly title tu\ttirud allliaoll; formed 2i to 72 711[]' L1a► 16. w alul,Ca, bU%'Crely Lroded. flUL11 a11L U11 Lull[Lig Lu hilly u131.nn1a FaC3 Fru:lnau silt loam, 2U to 30 pereent slof:leb, severely LI OdCCI. ~ Fin Prebh WILLLr tllarbh. Siltillo►r, bwainiq, 1111('1lniL L11L polnla ,44d f r11 gcs Lot... iakua [JUL IL.1vC Ll 1111CLtl,it111g {I ►L'.LtLLI' table. ti:.11g111CLllll,n LI.1L.t La ILUL glS'LD, lib I.ILLL1 type is tau L'ul-1.iL1L GaC3 Garfield silty clEty louni, 0 to 30 percent Very deep, well-diumcd autl du%duped m loc•,a u to ti silly CI"% alul)Ca,:3cvelely eruded, ou rtilglAUJIM aild kliub-i un 115E iulling to lllily 'I W 3 Slh)' LI.1)__-___--_. upl.Llida in Lhu P.donac soil arc.( 23 to 60 Sllt)' L1_1) Io,ICU__... , GgA Garrason gravelly loam, 0 to 5 perecut Gravelly, mcd[uill-LUXItilui, 501HUMIA1, 1~ca:a- U to 15 Gravelly lu.ltlt---__. stapes. b1►'ely dra:recd aoilb formed hi. kiXI C11y gl.tLnEl l.i to -1-1 V, rr gr L► Llly 16.1113. GgB Garrison gravelly loata, 5 to 20 percent ❑uWANII Lll;t[el%d flunL a Valluty of uCA, -1.1 t5; uu S.-Mil, Xr:LrL I, :$Jla olupcs. lgncutla pal Lnt luck; url 1E4..u•ly 1 Let to uluLl- LuUI,IL tS,liLa • L'lall•ly ,101)lllg LL.1'I;,Lea, c1[;pLllLL1 11[l>;Lt114 of a L1Ld, 1;C:k►'ll, adi61 COIlI31LalWIILa L[IigL'a (roils 2U LW 5fui3. GmB Gairlooll vcay gravelly loam, 0 to 8 Similar to Gali•iaOll gravelly 10.011, (:Vccpt th.tt 0 to 15 Vury gr.tt-Lli) 1u.,1u_ percent Slopes Litt: bul fact laycl la '1 Lt gr.1 vel1)'. 15 to •14 1`Lry grai , 4 Ity lu.llu.. -1-1 to uU S"iid, gr.,►Ll, sl,d • eWIJ1JlLa[ill, ['a GnB Garrsoon very stony Inam, 0 to 20 Simihir to (;alltauil gILIVLII) lu.uu, cttel)t til.LL 13LlcelLt z1013CS till: burface LI) el is very 'IUlly, GpA Glenrusc silt louila, 0 to 5 percentblopuS. Yuy beep, laedlutLL-teEtured, ►t'ell-dlanied sulk; 0 to Silt 1Galn--------.. GpB 01enroze Silt loalll, 5 to 20 pC Me L 1t 510JWL4 fL'ICa11Cd fCrJ10 ILUCI 1911411t1a gL4Lllll till, allrfai'L GpC Glctlro-~o silt loalll, 20 to 3U pl•VCWlt layer 111111leliced by luk_-4 uIld VOILullic a,ll; UFl slolics. gumly rullliig Lo btecp upluiida. GpD G1L111'Llau silt lounti 30 to 55 percent . blup4s. - Triangular Channel Analysis & Design Open Channel - Uniform flaw Worksheet Name: Ridgemont Est N 5th Comment: EXISTING DITCH, flaw from S. to ex'g. CB Solve For Depth Given Input Data: Left Side Slope.. Right Side Slope. Manning's n...... Channel Slope.... Discharge........ Computed Results: Depth............ Velocity......... Flow Area........ Flow Top Width.... Wetted Perimeter. Critical, Depth... Critical Slope... Froude Number.... 3.00;1 (H:V) 3.00:1 (H:V) 0.030 D.0687 ft/ft 11.90 cfs Sv~Ce.rrslorJ" ~f'1'75~ ❑.77 ft 6.65 fps 1.79 sf 4.63 ft 4.89 ft 1.00 ft 0.0178 ft/ft 1.89 (flow is Supercritical,) Open Channel Flow Nodule, Version 3.21 (c) 1990 -Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Triangular Channel Analysis & Design Open Channel - Uniform flow Worksheet Name: Ridgemont Est N 5th Comment: EXISTING DITCH, flow from S. to ex'g. CB Solve For Depth Given Input Data: Left Side Slope.. Right Side Slope. Manning's n...... Channel Slope.... Discharge........ Computed Results: Depth............ Velocity......... Flaw Area........ Flow Top Width... Wetted Perimeter. Critical Depth... Critical Slope... Froude Number.... 3.00:1 (H:V) 3.00:1 (H:V) 0.030 0.0687 ft/ft 13.40 cfs J00-`LC:nit FEW 4.81 ft 6.85 fps 1.96 sf 4.85 ft 5.11 ft 1.04 ft 0.0175 ft/ft 1.90 (flow is Supercritical) Open Channel Flow Module, Version 3.21 (c) 1990 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 r 1 F t 1 r~ s t r (Curb Drop, 7° Deep x 10 LF Sto 20+40 to 20+50 18•RT onora Street, with Concrete Srngle Barrel Drywell,Type "A" with 4urh Inlet, Type i, L=10' Metal Frame, Grate, ype No 3 ol~ane Caunt Standard Spokane County Standard, Stu 20-x25 1s Street F Elea 2027 75 to 2027 57 Top of Grate Sonora 2027 00 of See Detoii "A" Sap • See Detail "A" Bottom of Pond Sto 20+20 to 20+50 2 Floor Elev 6' to 46' Rt of q Sonar ~aernLr't 6 Floor Area 600sr~tit ~ X40, D( o5na~~ ~ C)o See Detail "A" 1 1 1 cr s s s 1 r s ~ s " 97 LA CL 1~5 li 1 0 C7 n 4 1 11 ~ 9~ 0 C f y i7 L. Q+ i 1 - r. 1 11 1 i -l r 18' r•3 10. '0' BuiWing Setback-, 1 10' Utility Easement ~ 100 79' Curd Lrne-~~ L4 = 85.08'03° R = 20 OOP T = 18 37' !a L = 29 72' GRAPHIC SCALE (IN FEET) 0 10 20 'sa f TOVEMEOVEMBER 22, 1 993 1 20' LOT L0~1 f71 Fw a d P946 D, SuRVF OAD CIVIL ~~"~~M ~ LY'Pt RIDGEMONT E; ATES NORTH 5TH{ ADDITION y9{lg A R G61°1NER Fi0l.0 SPDFNdC WA 99212 Fri 926-1522 n = 90°00 R = 20 00 T = 20 00' L 31.42' + Q C C'4 C 0o¢ 12- [V t- - °}~T~a E~tir)~ a o ° ❑ Q v 6 CS.7 Ul CN L- Li. Ln s_ + $ o 9 AS m Z N >J- Q dl E- Q a) C: in Ln 'Z w a03 L (3 - N t7 ~ t= nr C ❑ LO N ¢ Ly L:3" 6 CD v _ u- c: a 0 c o ❑ D a- 0 CV D C.7. 0 ❑ U1 n 18' f~ 7' 1 J s5 RIOGEM Curb (fir❑p, 7° [deep x 7 LF --O ~ Sto ER 14+82 32 to 14+89 32 RT 21st Court, with Concrete Curb Inlet, Type 1, L=7' co Spokone County Standard CL opening 14+85 82 F L =2028 99 See CJetoll "A" dfti 1 10000' I Single Borrel Drywelijype "A" with _6 4"1 Metal Frame & Grote, Type No 3 S ~ ant St nd d St 14~-J3 10, I 27'Rt of 21st Court Top of Grate 2028.50 a F) See Detoil "A" 3 25' 4 1 30' Building Setback 14 ~ rT_____. I I I N ~ LU I Jf I ® 1 r I a I I x I G ~ I ~ I f 'I C I 5 0 I I Lf} r N I ~ I ~ ~ V I .C] I 0.1 I I . 10, .a I c ~ l IJ I N Q I I 0 I I _ I ~ I 30 120 00' N89.20'22"W NOVEMBER 22, 1993 LOT 5 BLOCK 1 )NT ESTATES NORTH 5TH ADDITION - Curb Line tkilt/ Ens 1n-~n co ~ r•`y 01 ter. ;s7 0 Lr1 GRAPHIC SCALE (IN FEET) 0 10 20 -ta i 1' - 20' F-d.u 1949 ' aT11pSon E-ny7neers, hic. CML ENGINEERS LAND SURtiEYORS N 909 ARGQr41gE RGr.P SPOY.ANE, WA 9921? PH 9?6-132" I , "2 08"' POND SECTION DETAIL u NOT TO SCALE BACK AND SIDES OF '208` POfjO TO BE RICHER T'riAiq PA'VEmEuT SIDE a w q C] y POND ENTRY o a 0. VARIES, 3' hilN. VARIES! 4' IAIN. RRYY!£LE GRATE UNI PWO VITH CRASS SOD C ~ i CONCRETE CURB INLET ~ I TYPE 1 SPOKANE CO. STD. ► r crWeill coMcFtFrC DRrirf.I.L I '208' POrrD FLaOR PLAN VIEW: POND ENTRY SLOPE SOD TO TOP OF DRYVIELL OR MASTIC ANY EXPOSED JOajT5 ASPHALT ' "L'-2' MINIMUM OR AS EDGE OF PAV T SPECIFIER ON PLANS OR BACK OF CURB r - , DE -L J I d RIDGEMONT ESTATES NORTH 5TH ADDITION I - 1 111Z~750>Z ~iZ~l+~4~eTS, 1tIC ❑mL [hC'f![EHS i1 Lu~A SVkvi lortS N.909 AACCr,!!C R0.A0 SJ°Cstwlir ■yA g9211 Fot 'I: f,-137] I S TORNMATER DPLA AGE RE:POR I' for Rrdgemont Estates North - 5th Addition A 5-Lot subdivision located in the NW ,114 of Section 25, T15 N., R.44 C W N1. Veradalc, Waslungton 99037 for Tupper grid Associates, Inc. September 27, 1993 Lot Plans Revised' November 22, 1993 OFFICIAL PUBLIC DOCUMENT SPOKANE COUNTY ENGINEERS OFFICE I ►L PROJECT 0 SUBMITTAL RETUFIN TO COUNTY ENGINEER Report Prepared By: Simpson Engineer., Inc. North 909 Argonne Road Spokane, WA 99212 E. S! `L 49G! EXPIRES 71 t7~ 8 I RECEIVED F E B 1 1 1994 SPOKkNE COUNTY ENGINEER STGRMWATER DRAINAGE REI OR'r l'or Ridgemont Estates North - 5th Addiiflutt TABLE OF CONTENTS Summary Table: Drainage, Basins "20$" Pond Volume Calculations M ■ M S Rational Formula Hydrology & Bowstring, Calculations Capacities of Curb Opening Lnlcts Stopping Sight Distance, 21 st Court Intersection Sight Distance AnUlysis S.C.S. Soils Map and Description Calculation for Existing bitch cr SE End trot-3 "20$" Individual Lot Plan "20$" Pond: Section D'elall Supplementary Maps: 1. Drainage Map for Ridgemont Estates Nortli - 5th Addition 2. Street Plan-Profile, 21 st Court ■ STORMWATER DRAINAGE ANALYSIS for Ridgemoat Estates North - 5th Addition A 5-Gat subdivision located in the NW 1/4 of Section 25, T.25 N,, R.44 E.W.fvl Veradale, Washington 99037 September 27, 1993 SUMMARY TABLE: DRAINAGE BASINS Basin Name: 5A 58 Units Total Area 17,320 121,380 .0,. Pervious Area 6,420 103,420 ft 1m rvious Area 10,900 17,960 A. 0 Uwa s= Area 1= 1 000 3= 3,0U0 .ft. # Houses=Area 1= 2,000 3= 61GOO As WJI Streets 7,900 8,960 sc ft. "208" Voluaw 330 374 cult. Pond Floor Area 600 708 ,f1, Pond Perimeter 100 1,04 1111.8 Pond Vol. 6" 350 406 cu.11 Pond Vol. 8' 491 567 cu.Cl. Pond Nurac Location _ 5A L-1,B-1 5B Lr5, B-1 NOTES: Driveways are assumed to be 1,000 sq. ft. of concrete per each dot, and houses are assumed to cover 2,000 sq. ff. per each lot. Portions of Lots 1, 2 and 3 have already been included in Drainage Basin 6 of R.E.North - 2nd Addition and Bashi 3C of R.E. North - 3rd Addition, including houses on Lots 2 & 3 of this plat. Conversely, a large portion of Lets 1 & 2 of Ridgemant Estates No. 4 - 2nd Addition is included in Basin 5B of this plat. "208" POl' D VOLUME CALCULATIONS IN GENERAL, for any drainage pond with 4:1 side slopes on all sides, the pond volume can be calculated v+ ith two components: the volume directly above the floor area plus the volume above the side slopes. Volume is calculated at 6" depth for "208" treammit and ar 8" depth for storage, as follows. At 6" depth; Fond Volume = (0,5 ft. depth x pond floor area) + (1i2 x 0.5 x 2 0 x pond floor pe6neter) 0.5 A + 0.5 P At 8" depth: Pond. Volume = (0 67 ft depth x pond floor area) + (112 x 0,67 x 2.68 x mid floor Perim r) = 0.67A + 0,89P 12 68 feet - -I ~E POND 5A: Pond Floor Area, A = 20 x 30 = 600 sq. ft. Pond Floor Perimeter, P = 104 LF Volume at 6" depth = 0.5 A + 0.5 P = 0.5 (600) + 0.5 (100) =300+50 = 350 cu, ft. Volume at 8" depth = 0.67A + 0.89P = 0.67(600) + 0.89 (100) = 402 + 89 - 491 cu. ft. go 1~~]A 5 POND 5H• Pond Floor Area., A = 114[w(14)2] + (11 x 14) + (16 x 25) = 708 sq. f1:. Pond Floor Perimeter, P = 104 LF ll Volume at 6" depth = 0.5 A + 0.5 P CFL,-00KI 0.5 (708) + 0.5 (104) 354 + 52 406 cu, ff.. Volume at 8" depth = 0.67A + 0.99P 0.57(708) + 0.89(l G4) =474+93 =567 cu. ft. Pond Floor RATIONAL FORMULA FIYDROLLDG~' DATE DESIGNER - G, 11 X i; f= ! I'J .°fA I°'RCJJL C T 1•iPME = R J. DGEN01\11- ESTATES NUR-11-1 ST H ")DD J T! ON DESCRI F'T i Dl',t 31-0iif°1l A F ER DRAINAGE -113 DN--G l F!v F=`C.lN D S }l_iL~i Fv r"i - J ~I 7 F il'il~l=iie :s :aLIJi(~i=it r'1 ;1~W 1 .L C; 1w Iii 1 a i ~7 LJ J:; ~~1~r~r1 ' ^ ACRE w ^ l e 2 SUB Yi I'1i IZ, A , L s RIUNCIllm 1 Colo--f F° L c l IW 1''~ ~ _ ~ ^ SUJ t;E'EA .04 AC'.Fvl_a aiJapIRE 3 3 1r€J1qCli--I- L€3EF' JC,If:T,11 i3U AREi~ -1 e 1I? 14 AC 1% :E SUE ARLA ~ Ii4.. NOF'F COEF-F J C I L- I - - u WI-CI-1 AL ,^1RLAll - . 7,? 78 ACRES .i G L F-N-1 Ma k i ~ , J L]VERL_0,110 1=LOW VALUES C: -t = 1 f 1° - N 02 C'liANNEL FLOW VALUES L 2 172 _ i ^J .016 c;r J. J. TD s .1'54 C:CIMPLJT D VALU ES DLJFr l)I] I Jul - u i8 C?10 ~ .7 CIA - .rI - r f r.. ?.,,r . "o . e+r ,PF.Y -n., 'k , - , . FJOWSTRIN5 CALCULATIONS PiTE 9 /'24/9Z D176I 7 GNER r 17. H. C. 01`) 1N 'S Y 'I'DJECT NWIE = R I DGENONT C~ STY=1l-ES NORTH - STI-i ADDITION ,ESCR I PT I ❑N STORMWATECi DRAINAGE TO ON-S T TE PONDS -t t I I i~.C'{151 y clr'V . }a Y I i l l ~i ±~Y"c,r r; On n. } (sac. 5 (Iri. (CU. Ft. 7 (CU. i Lu ) (CL(. f L6 7 5. 0 C) C) IB .7B Z. 12 2 - 10. €1 600 f _ 2,241 . 55 E3=E 1 1:(.i 204 15. Q ~cir:1 1.77 . 43 _ : 7€"a 16 20-0 1200 1.45 .~--5 461 M,61:} 1E]1 -0 1 G€D€;1 1 : 04 . 25 4fr3i' ` 10 -57 715 2 10 cl .91 -10. 0 2400 .02 1 7 45w (1 t X700 -74 , . 113 5~s6 S1 1~-3 sc). Q 1 7.i1€:1€:1 .6B . 17 S1 7a_1al 550.0 3.30 i .64 .16 5 , 1 94 (l 60. C1 76C10 .61 w 15 51 J €1C;€_ - 65. C, s 9 .60 . 15 ~5B1 1170 W;8 9 7C]..0 4200 .56. . 14 609 1260 -651 7F j. (:1 4500 .26 . 14 80. 0 4800 .53 ..1 67-l:I 1440 -°806 85,C) 5)100 .52 ' , . 1~ 6;..%f 1e,eeY --R7~L, 90.0 15 4 0 0 .50 1', 61 95m €1 ~i7C.1€-] .49 . 12, 699 1 T 10, -1{11 , 1 00. 0 6000 ' . 4 3 E T, . 1 71-5 1 BON ~ 1 C1~"35 HE MAXI MUM STORAGE IS 2.21. 9454 [ s 7:' CU. F F. - ~ PaS A VOL-umr cz 8" DE:Vrrk The tk mC o-f concen tir-ation, i5 5 m1nLtels. Y lie LJnde vel 0pa~d f 10W € U t ] 5 w 3 c. •C . fWEL - E.N YEAR STORM CALL RAT I f3NAL. FORMULA HYDR01-O(3Y DATE e 9/24/9' DESIGN ER = D„ H,r'C. BASTNI D PROJECT NAME ~ R I DGEC'IONT ESTATES NORTH ~ 5TH ADL) I T I ON DESCRIPTION w STORMWATER ERA 1 NAGE 1-0 DN--SITE PONDS SUBAREA 1 = 2 a 37LR ACRES SUBAREA 1 F,l.]r(-IF"'F= CO FF- i C ll: l,I r iUIsAREA 2 = 06 9 ACHES SUBAREA 2 1RUNUF"'I- 1-OCF'F iCI.EN I SUBAREA . 13O ACRES SUBAREA ~ RUNOFF CUFF I C;1 E.I'I I- - i SUBAREAi 4 .206 ACRES SUBARl-;il 4 RUNOFF CFJE F I C If::W = 3 TOTAL AREA 2,: 7 S7 A C171,ES CO 1"!POSi 1-L RUN01-#° COEFl-1L1C_NT - .~2:5sa 2, 7 IIIIERLAND FLOW • VALUES , , f: L e' L 260 N .4 S. 14 CHANNEL I-I-_f3W VALUES L- 256 N .016 ']'D .22:3, f i3IviFUTE:.D V0 UE'15 DUR _ ; 6. 27, I 1C) ,i.'. a S 9 1110 2.08 0 9, t ' t BOWSTRING CALCULATIONS )ATE 9 /24/93 DES] GIVE/, D . H. C. CsA~ICd 58 . PROJECT NOME 1= I DGENiJNT ESTATES 14OfiTH c.rl`H P+IlT7I I 1N fESC P I PT I CYIW ~~'T I 'IWA TEF: D~:R 11~iF~GE T[7 {Jx! I'VE 1='Ul~ilS t "Intensity Pdev. r, vout Eta -,ge- (min. l tst~cu 3L Ca.il• ihr . )I .(gyp F.~1. ~ (~<<. . 7 tL[[p f t. ) (cu. TH.. ) 5p Is 2 28 'a~3. vct 5) '7 6. .2 :"7.1 2, 39 2.Clr 10, 0 61),-) 24 1 p 61 1169 780 31 G9 d Y 15.0 ?0,0 i . 77. 1.21 1 _.C1'3 1 3 'eta ] 6,: } 2f z,[ 1200 1.45 1.04 1.83. 15SO -179 t 25. 0 ',1500 1 p 1 1 .87 1 ~I 1: 30. 0 1.04 .75 IA7~ 2 5-40 35.0 -.,2100 .91 65 11Ijj ~ ?~rl -1W'7r~ 40 B C, 24C1(.) .82 1 AU 7 11..'[_! - 1 t_s a 413 . 0 .74 5 1 %'Ot 11'~ GCS.[_! fist~t.r .68 . .49 f 575. C! .64 46 1,=;74 429 C= '27 16 60.0 7600 a 61 . 44 16'-' 3 461.1 =1 - -50-Tly 65.0 _9ou .60 . 431 171` 5070) -',S] 0. 0 =8 ± • 42 a 1 GO 1 55 4 C3 t-} m+[]i:a ice! 75. 0 4"C!0 . 56• .40 1 '~aC3Li["~ - 1 c)0F; 130. 0 4100 a -sr:) 1874 6 `10 a era es. 0 0[7 52 ^7 191.1 s 9C '5400, 5 0 j1., 76 11~Ei~; 7[ey;°'0 5) i 95.0 5700 F .49 .7 a 2019 7410 - .761 100) 4S t „a L I• 21 10 f > [ 8rat°a 1569c1 -HE MAXIMUM STORAGE IS 55 .29 7-:7 562.; CU. FT. 55 c? 8" = 5G7 cu. Fr, The txn!1-2 aTC concen tration is' 6.2:)7206 Ml 1.)UtL- . he Undeveloped flow out is 1. 71 c. S. -a `a pc "P", -f- T-11-6 -Dp-,1WE1-Ls T9-KI I/17nP; .iY 3,li• SIY°~~... PTr-1 M r r e. ra41r5t53dNK., P. r.._. ~ F 'r 1 i i X F F f i r 4 CAPACITIES OF CURB OPENING INLETS BASIN 5A: Q10 = 0.78 cfs to 10 LF curb opening to fond 5A cr Station 20+40 of Sonora Strom, in existing curb on continuous grade sloping downward to the north. Refer to Figure 16 of "Guidelines for Stormwater Management" L=10 ft. a=1" y=0.156 ft. aly=4 48310 156=0.53 Qa/La = 0,077 cfs/LF La= 10 1 LJLa = 10110-1 = 0.99 Q1Qa = 1.0 Flow Intercepted = (1.0) (0.78) = 0.78 cfs Flow Carryover = 0 cfs Construct 10 ft. wide curb opening from Station 20+40 to 20+50, Right side of Sonora Stmt BASIN SB: QID A 2.08 cfs to 7 LF curb opening to fond 5B at low point, ER 14+82 32, 21 st Court Refer to Figure 17 of "Giaidefines for Stormwater Maaagei t" H = 0.223 h 45 Rth = 0.22310.5 = 0.446 ft./ft. Q& = 0.33 cfs/LF @ Q10 = 2.08 cfs,, L = 6.3 feet Construct 7 ft. wide curb opening from Station ER 14+82.32 to 14+89.32, Right side of 21st Court. c f J LA CN ,n 3 3 5T y y 1 TIJ.uV y,`~ CsArb [ 4 Curb Ft ■ xb eo 1 i z 85'aB o3" W R= tO.7-t 1 1 yR• -za.aa L s 1$-93 yx ~ 1~ • 113.37 ~ ~ ISO 10 a 1 1t- s 2.3.-jY M ■ ri ► - Building Setback ~ti.,a' prwn■+aa Erss~wr Z ~ 10' Utility Easement - ytiv t 100 79' 7.82'° f.. 1 N 215.QQ' w ~►w 16+59.32 174 f4+44.32 ~ v ~ ~a cs 89.20'22" E m )~o 1QQ.'QQ' '63.3$' ' a rc 'f•• I s y 1 Utility Easement -~,7 113 z7'0' Building Setback _ • _ 3~-- e+A+-b _ - - _ - - iC;xr6 ~ 4. 5'4'13'2.7 lk ■ ~9a' 7`ao n t='20.00 5 v TrIzQ.vv ¢ r) L_a [B 93 I I `y Lr ` i 31. 2 Cis 10 i11 o r`3 [n to Q' b 0 Ln STOPPIT',,AC SaHT ID15T4,1,~CE Fa R. 2-I :~if FREIGHT OF of ±ECT e t_OW Poi t j-r = 0, rte- Fr. DPIVY E'iE~ HE716 1T L tE CUL-DE -5Ae. = 3.5 FT. of - ti I of d _ 0 . _ , ! Ln -0 - !I-' Q • I --l I SIGHT DISTANCE ANALYSIS: 21st COURT For a car waiting to merge from 21st Court onto Sonora Street, we will snake the following assumptions: I . Driver's eye is 16 feet behind the gutterline of Sonora Street. In terms of street stationing, with the centerline of Sonora as station 14+44.32 of 21st Court, the gutterline of Sonora crosses 21st Court at station 14+62.32, thus the driver's eye is at station 14+78. 2. Driver's eye assumed to be 3.5 feet above finished grade. At centerline station 14+78, the finished grade elevation is 29,88, thus the eye elevation is 29.88 + 3.5 = 33.38 3. The centerline of 21st Court is at Sonora Street station 19+57.56, so the driver of the merging vehicle is at about station 19+60 of Sonora Street, 34 feet right of centerline 4. Existing ground at the intention is at elevation 2030, and slopes northward at about 2% to 3%. Thus, the natural ground is about Y to 4' below the driver's eye at the intersection, and therefore does not obstruct the view of approaching traffic. 5. Sonora Street is designated as a local access road, with a design speed of 30 mph. SIGHT DISTANCE REQUIRED to turn left onto Sonora Street across one lane of traffic and merge with traffic from the right (refer to graph on following page): Sight Distance to the left. about 310 feet (Graph 13-1) Sight Distance to the right: about 375 feet (Graph B-2b) SIGHT DISTANCE REQUTR3--D to turn right onto Sonora Street and merle with traffic from the left (refer to graph on following page): Sight Distance to the left: about 375 feet (Graph Cb) SIGHT DISTANCE AV'AM A13LE TO THE NORTH (Driver's right) Distance to see approaching vehicle: over 375 feet. (Refer to attached sketch) SIGHT DISTANCE AVAILABLE TO THE SOUTH (Driver's left): Distance to see approaching vehicle: over 375 feet. (Refer to attached sketch) Conclusion: Sight Distances are adequate in either direction. Reference: AASHT0 - "Geometric Design of Highways and Streets", intersection sight distance at an at-grade intersection. - W -m - V S~CHI DlSIANCE 10R P VCHUt CP[~S5l~rG MAN[ Q - _ R°GHvil, FROM SI DP. fs(E v;4ckl vl - E-1- SiNi D:SI APH rDR P WIVE[[ l t!r ONG LIT I i':l D 16 a FF'Du Lirl, IsU DURN) ' -155 ane+n,tdlrn SIGHT V)SI .IXE fOn P %,[H:"Lf 7iln = IEF7 KID A-LVIIL !-i'NVA l ACCPD55 f vi li.'Ct E APPROiLrANG {FDu MI.ISE[ i1:tLktml 5D 1 7b- -S1„Hl b;S~l,h'CE fD"n P VLH;CCE 10 it` RN i'ii' l INl D a 5 31 V-'E KHO'RY AQ WAN' M' Df E[ S04 SPEED - 'Z lkllf3DJf DENG [11'frxUVEN BY R ITHICLE xPMLCHINIG p ad rRDIJ 7Hr 1ft:GHd PED'UL14G S?[[D EPDLe D[SrGI; SPEED - io E5x Dr D[SrLN SPEED.1SH D:JCPtu1 1r®- slutz7 r}.57 f.~,C[ CCI;P L'f 13'dt [ l D 7 F7r,l. £PGH7 F1.7 D ~D 2-ij 1:[ Hr"tik'tV m-1), W SPUD ~ ►ilHDO1 fi[WG 011RIJAEK Er J. 1'16..' t{ J''Fr'I~~.(t?1'.G t 25 f PUu W rl Ar::+ Hl ur i►I 5 :,t; Sri U). [D ~(}p LDD ~LFD iDDp 12Vf) 14DD if DD ~IGtiI DISI xNEE frU1 t ~ L- F1gure 1x- D. L nle,rSU-CtlDn sight dislance al a.:t-gFadv lnteasecilon (Case 1118 and Case 111C) . .`~l~Pf'nAGj 0 r 1 plsrA+x_e = boa Fr, G"MONT , ~ err 10/v 0%%MNX R-0 5A d M1 . cca~ s.° rr ~ ~ T q fM1 c>w.+..mT ew ad. , ak+~. I 1 yd t~5 D p0 r ~~~4 'bb =710 lot? 13 e.,.r.,.cT m••.c. eu+.a ...s r, ` ~ 1 4° , ~ ~ ~ ~ i S ~ 1 4 .'1~ iK Lew w'w.•n a:,.a] I p ,~..~5 ~ ' , S M1M1 F w~ r .:'ak'°.+'aLw eQ.a..f ,S? J FHEP.GINIG UEH{CL EA7 iwTE sFx_-nGN - L•wtleerT C..,.4 r . r ra. r ' A1~ 1r• ~ • 1 S ..fix re•1 Sir 'y'~'~p _ y !saws & s/l! Cw+l h .rwr rwreL U . L ~ r r-+b - ~ 0 160 017' 6.3 F F__ - L.r91i•r L:.. v.a wn•e~s.w) I Uhl" E aamrnis n J • y..iw~e.uar~[M1..vni T. 'A• r _ YP J ____r- ! 5 0 . a.~.. s k r• f ii'17c v. 1 0 T. P$ ' ~ A„war Ca1+rf.A-lidr.~y~o 1 ~ I / ' i pi r 0-1 Li : s `to" d ~ ~ 1 F 12000 25 RIDG6~MON. GRM18C Sut.Z ftH nrh o 17 SG i~i~i 1 L.J . - • z ,~iy~ V~~iGL.~- ~PPR~hG-Tf~i ~ F~c~~ ~iu'~{-~ 4-00 F-r, SPOKANE COUNTY, WASHINGTON - SHEET NI (Joins sheet 67) R 44 E I R ti a c r' I''a• , fA.l •~"i 11 l' ry w I If,'r afLt d - ',J1VI }C(-17i _ f .'Fj~~'•`.: sr wui 'AND '~rrria»l60 t,= I'!. Yf 1 Y'•Fl~r!'~ •~:Y+~'t' l i7 hv' ]pt 1 SSIe i ; .;r . i k-~['f G r • ,.jRr • ~'a J r .COY ~~~~f • y ~t'_ ~ ~ R fi ii i~;. • ~yA +I•I If ,'i. r6 ~~r /~'I3"g".aF, d~Y~pi lys, dV r r - $A.{•I~. rjF1i:'i'•i4~~<ecbpp';i~ Gy" ,r..M^a6: -e i't'+ j``'+,. ~11' ry k•"i l! e ; 1" j~}r j? ~'r bra f,# Gm$ ` ` i lE:• -r, f jtir, Y.,1.1, •ib .f. y ';1 '•'it dT' F Ita .,.a Fie.C ajir rrr 44 h~. Y t' 1, i, ' 1 •t •l„+ 1 {.p l,, "C"I"I Vail' .2 r~ r r R 1•„a }yw I Yl'` /g ~1 1. F"C a f , r4•~ -~f. V a 1 .r'• .li' f:+l[1 i11 7FYg -1v k r 'i1. iJ4''•!t $:3 r t`Iti l`•e a a r Ids +Yr xj~La~~~ ' 1 !I .I,o. I~• yy~ ' "Y, -f . •y .F i i ,i 1' ~`rL~ 1 r ~ e" f 1 ~Y• ~ , ~ "r-lYl ~ - - ~e~ ~ I F ;~''i.. •I p+,i 't ~ 4'1'''x'`^ 1Geli- G9A `fCG l Y 1, j' "{'ma'r.! I. I. V a ~ } 1~,` ~ ;z ~ sJ ;"~~1 ~ t . { ~ I r - v„~ V • } ly y -~•I . ll ~;~a/ 1r;S 4.i1 " I'Dd i , Y a 4 d r 1 y ^Il+-r-Oi1{~ ' ,Al. ,'`~f, ';Ala iiSY i1 e~•~' •Cf~~ r J/ ~a I rF~Sa 4I• 85~ • s .i3 I it r' 'r Iry }1nA Y S A I S: Laa uo. e i - ~ ~ S;d~ r,~ ~.y~ "t• n.•E~~Str ~ •'J~ ~,Crl{ r`a ~~y'}~ (tII ~ " r+ ~cjrr ~'~E irf t~•' -7A- !•~~Y ' `{y(~yF"r! i~i'f !r . I$I y''i ''D i-+~ } i~ r ..^,1~>~° - .i•~as~ ~ ~cqa+.l u ~ 'l 1 . r. 1: ' } 'e~ f i nwC SAES` P A " i ; r., ,r', .C~t at'f, i;''l~ ~.~x , ~ } ~t ' ~~q~ `Z' L~ i ~fq I~ ~ ,Ly4: a4 C. {i.J';"`r.a ~ 5 ~ i~ '+1 1 yL - Y.~t~r~s` •s ~ Lla`8 e • r PLAT. ~ TCkC, ~PBr ai GLA PlEs~ lfi. s k{ ? ~ e ^ s „s' f +s P~d l~ + Vi,. r - y I "sY 1 i d 14,,.,,y~,i$- t, r a t - ~ I ~ `{i a i A' a ~ yY, s - i ~ •3'+J 1 i !(Jir. I r a iP t . f • ~•,~i 1 ° H "'~.u• , ~ Y I F411A -f PsB t r _~x8•.Ir.- I• f~~ ~s . ;[;,~r:•'{', 1 .F ~It ~ ff } . ~3Sri,~YI.~' kl,,S;oQ`r -i n j , 'p I ii•,:;SiF.V II. I 1. a Vi, s. 7. ~r~ ~'r~_• i7~/`t• ia* HSG 'i•+"'4' + 1 n - t{., e r,'..,Lr - "+'r" •.N . `f.-4fi~*! . {'Y 1 p„ i• " yF57 1•J >5 ,eF ,l~,i I • I GmB A" 1 i HSl3 ' a. :a;r:q~.:i~.o°„° n; •Ce~ r'~~~L {~r ~~t~ L 'r.~ ' ¢ ;~r y a .~i • + I r'!tl •'IY;Y{•r • s I„, i• , 1 'a_~ l . ScrE - -'(Ilfu' P:;_~ - d 1,1 , u f`-?4 .1 r' d •a , r I p ' Q. a _ "'~.+.I'` IIr.B ~F 6'f1''' si;+•^ - ~I :i~~lir 7`~l~-t- ` ,i l•/.~~y aaf~~.,~"Y„~ hdry,; ~r Y~~ _ I 7'~ .I`.;'r•a r f ~ F4 ~i JL°l'rR, l-i~ + - T-`~-'~ _ x • 1~^~+ . -------•-(,ry ± (-7' j,1I'''''--+''~~T 'b •'f IF.,, 'r.~ i ~`~'•`"s~! {e r~16', p, f°:: 3' '7• y~ p '1' Ff. 1r •Y`ip4•~lai'lii E~ f u s ~ tr ~P ' a ~Q. ~5~~~ `~rj `/`7 ' .r ~SII` ' ~~i: 4+.r.i ..I I C' ~j1"1:;7r.er ~ « -r i4Y• fiaa y ill, •S•. !r ~ r4.~r~ CII i .tTr'>'a rr'U c•G:. a, ,1~, , CUE] '~#~I: .,.b " ll r r Wir ±ij yJ{ G g k±c + ee r`:r , :I•Y r!t~ i; •,,Gi[IB 11 ' " ~ ~~11 ~ I. r.j >~'IY~ 1 ,~^a f l f<- [3 Ya l+w,~ C~ G~~ ti f, 4 Ji MIP J a a'i~ i„ I ~d Ma s' 'L~ i !6 r_ • ` '?'x •'~~0===,cam-~.,~ t 1 r /f 1,1 rfe A' - _J lea _ - - ' Y.t "j l; k e.+ t t L If:s r PC '1 - • , !'y,~' / fr ~ 116 ~rt.,~ ln+ C~ ~,~,~y fi'~~.' Ali ~f4 l ~ ^ ,G$g , > l• u ' +y~,ee±'~~k: Y~T t S,. ~ I ~ >r McR r v ri,>!~~y~•gr/~ G yFi :J'~'rA [',e••• Ia" 'I .i !i •:,r•s" C G[A I , r';fit r"." y ; S ~t~,r d L}C3~11 , r GaA III f a !s~~ Gru at R` lii f at'; '•y~~,'~ 'i. 1 r5A dy 1 g 1'C, ft [ . Pa6 ir[7 .r ~G ":~I`_ Ys w 7 { fti 6 er- : rt :'r.(, N' t Bab IL . i7 rati ,i r~~-! y4 ~ " , • J , ~~„,l'a]Y I %t`'''i s r SaG ~~-•5•~~ fr . - ~ u I fir. K[ ' ^Ff•. `~~~y s „r ,e; _ e ' I ` [ ; Gna ~]}uy •.tip. 'S,r:i~~~~ite~y~~;.+Lr:~•,•;} S~ t,i1'' 'rta,l, yy + . Y4~ Sl7 ' ! +rl~A .1~~`111.~r ^y 11 ,.~ti;l'71~~ .C~ ~tys,~{(` Va fi 'I.~f-','i F. ~ •il, 'l. t+;•~~''i~'1 r F .e ~i r B~b .oe t 6 I ''r I.e{a 7a ,1j ~h' It ' t~ 3 F u n B ~';n `''E r~ b'.lfk~#'i f~~• °f ~ r.~~•~ # y~ ~t~i~~'• lr` l 7.y~• • 1.«~ ~i.^ r I 1] 'P t,'.,}- 1~r• ~,[,4pa'~".}L. •I 1 ,In4F, S3 DaG `•r r /''.~,~fr S t i , _ ,f 4 if ~qli i ~C``r~y( EtaB p-y} aDRfl ' •°a?Y Y~~" s^' i~ ~t♦ - a i4 :Y N~,yr~`, lY~'f1'~f' ~~-i` -j$~'+~ } ~~}4,; sz"~l~ 1 ~T~ i" Y i ~ -Af'~ d~'I ~ /,!/I i~b°S Y 4 ~Sy }e';`!J, +11: 'F '~Ja1 +.i. J'i1 .h ~~ivl. t_ a , l Y•• •~'y' i ` , ii• ~'V' a •~r „j 7"-. Y•'1 s+'i ti '7 { .)5 ;Jr~ " A'IS - (Joins sheet 85) ltlYi7 74 SOIL SUIWEY ' T 11111.E G.f°-.Uf-iej (iC,]CIipt uit4 of .suds a I I f1[L1r ~ F GlaaaaAt:"L1Lai1 iJL 1,t11 1lltlp Soil mine DescripLiwi of boll .111(1 alle frulu ay l II Vol allri. Le L. 7 13.1 IL ~ [ LdrL DsC Dragoon btouy silt loa[u, U to 30 percent Similar to DL:lgUOU b]lL lOaLa3, U to .l0 percent slop-i. 31U1)L'b, CXCLp]L IILL L tILL a[LJf"(;t; l.ly+.r I~ aLULi)' DSD Diagoon stoaay silt loam, 30 to 55 per- cent slopes. DVD Dragoon very rocky complex, 20 to 55 Drtigoon parL alll7lIUr to Dr.l', UGal bill 1U.1111, B to percent sio". SU pi-rcellL blapx:b, (ACepL t1t.(L (IL'pIII to bt (I- roLk rautg(:s ftUlu lU LU oU uLLILLa 1tu61 UnL- crUp 111c1t[L1LL[ ill LlLaa CUIUpIL\. Ek8 Elolka silt lows, 0 to 20 percent blopcs. 11 ccdal171-LUX turi, d, W61-1,14'.Lll Wd a011 furulL Ll fh um U LU !-1 ?11C 1(]"115_-_---___ gluelal till C011LAI1111hg', t 1.11 eC AIIJUMIL of L'U[- C,IU1C 11~11 iLL I)IL )Lirfaec l.lyLr, 11WICCI.l111 by 24 to-1-1 (_irtLril} lutlll._._".. gravel It t[cpt11 of 30 to UU hichea, umipila 44 16 03 1°Lry grai,Cl[) aantl) I1ntlL1laL[ug, allor:n11L11kL tUpaUgr"1111)'. lL..1115. ,S tobu L:r.ANLI_._________- EIC 131o[ka very stony bllt 101LI11, 0 to 30 per- Smulur to 1: UkAblll, 10"111, 0 to 2U perLL11L al0pl:a, ! CutiL 31Upl;s. WlA t1l"t Llley .u e A el y stUUy 111rUUgIIUILt. E1D Elo[ka very aLouy silt loafs, 30 to 55 perccat slolxz. Ertl ELALlent b11L 10am. Ale([iUL1I-LCXttlrCd, boltlL^ll'II.Lt poorly (1rawit[, U to'6 :Jell [0.1111-----__..__ alkaline boil fOr MCd 111 ad lllt'I31111 frolll Callcar- - L'Ullb belt, VOICUl11C ILA, id dlUto11ltL; L1LL111i 26 to -11 V( ry WIL. S.Llt(l)' to 7v"tcr tRI11L it Ll e L l l ll Le. fl UIit ILear the ,urf;LLL 111.1111. to about ti feet. i1 to 1)U Sam h Ll.ly 10.1111__.. ~ Fs8 Frcemwi silt loiilli, 5 to .50 percent Very dUCI), ILI0(1er.lLe)y mull (1rL11ni.11 6i L~[,(11 t1 b(alla U tU 22 Salt blOp ub. JL1111 inetl[11111-tCCtiired bitrfae(. 1(t)'Lr Flll(1 111C(]I- FaS3 FreetliaLl Silt WWII, 5 to 30 percent um or muder:lt ely Ii LIL' tQX tared all l]a 011, forawd 2 to 72 SIIL)^ L'L"y [o"lA_--_--~ blupeb, bCVem-ly croded fIULLL At Ull lulllLlg to hilly lll)lalkd1,. FaC3 F'ralemaiL hilt load[, ?0 to 30 percent slOPW, Severely Cro(W. Fm Fre.h water mara11. Sllllllow, bV6 [11 rJy, III t( rllu l Lellt [di(1s ;(i,(I frILLgCS dro[ll] l.ikea OL.IL lrl Ve t 111ACLLl.ILJIIg I Is.(LLr t141J1e. 1:NglILLL'llllg d,lta Ia 14UL givull, 1 :Lb latl(l type IS 1UU Vailakll L'. GaC3 Gal field Aty Clay loam, 0 to 30 percent Very deep, well-dntiliLtl boll du%Llul)LU 111 loLaa U LU S 711[]' Ll.:. Slopes, scvele[y eluded. on rillgcLOps 311[d 1,ltOlla on 111(, i0hilig to [hilly 5 to 23 7111) el Ly uplandb 111 Lite 1',l1Ul[be boll ;hl La 3 t0 li0 SI]Iy" Cla/ 1011 Li-__.. GppA Garrison gravelly loan, 0 to 5 percent Gravelly, IuL'dit n-Le,\tllre(l, Ultlc%V)I.tL LAL(:a- 0 to 16 Gr.Lt^L11t 1U.11n--__... slopes. bivcly llrau[eel aosls fornsed ill gravelly gj tel.ll 13 to -14 Willy 10.1111.' ° G g8 Garrisou gravelly loam, 5 to '30 percent Ullt►L'aa[i nlaLell.(1 frUlll .i v:ul(A)~ Of ALId, 4-1 LO Ud a.(nd' gr.tE (1, site[ ; blOpeb [[')[[coda 1)nLL'llt rock, all 111`.111)' I(.1'L[ to LL IULI- LL La L11LalLillLa. Cra i'ly "lo1)Illg Lc[1,1L'(:-,; ll[,17111'tu IllaI.Ldle Uf b:lnd, p{r.l► ui, :Lll{1 LGIIIJII ,IUUea rallgi:a fa alu to o Net. Glal$ Gill'ribo[l L'L'ly gravelly load[, 0 to 8 Similar to G14l'1•IMOLL gI•aVUJly 10.1111, e%CCpL that 0 to la V, r) gr.o.ulIv Io.,II1.1 1]Ll'CLLit slopes, the btLLf;1CL l.lyer i~ %i_ry gIa1,..[[y L5 to •1.1 1 Lry gra'kL[Iti dUhall. -1-1 to Lu Sand, gr.StLl, .1111.1 e(11~131La LLtli a. ~ 1 Gn8 Garrison very stony loitin, 0 to 20 Sll[lll,ir to Gurilsolt gt.o e11[ 1o 1111, L%"J)t Llt.IL pc]Ceti L blopes . l 1 I4L alilf iCC la)'LI is VLry bIU11y. Gp]A G1enrose silt loft117, 0 to 5 percent slopes. Very ul el), IIILL1LUlIL-LcxL lll'C(I, [yell-Llratl tied soda U to 72 'ilh loath ^ Gp$ C:lenrobc alit 10a[ll, 5 to 201)CrCCutblol)CS. formed from UC1[l I lICU([9 g]aLlall ill[, bdl'fu L'c _ _ _ _ _ _ _ GpC Gleurobe belt loam, 20 to 30 peicent layer milLaenced by 1u.1w'i alud volca[1ae a -ih; all I aIU[)m gel ILly roila1lg Lt) t,WL•p uplandb. GpD Glem Ozo Silt ]Ga[ll], 30 to 55 pereCILL s[ol]es. Triangular Channel Analysis & Design Open Channel - Uniform flow Worksheet Name: Ridgemont Est N 5th Comment: EXISTING DITCH, flow from S. to ex'g. CB Solve For Depth Given Input Data: Left Side Slope.. Right Side Slope. Manning's n...... Channel Slope.... Discharge........ Computed Results. Depth............ Velocity......... Flow Area........ Flow Top Width... Wetted Perimeter. Critical Depth... Critical Slope... Froude Number.... 3.00:1 (H:V) 3.00:1 (H:V) 0.030 0.0687 ft/ft 11.90 cfs g5o-y~-Ap_ FL-0W F,eA "t 7--,c.s E, F, C, OF "P Emrj 7-- .1 e.P10 ISIatil " 6[7"7") 0.77 ft 6.65 fps 1.79 sf 4.63 ft 4.89 ft 1.00 ft 0.0178 ft/ft 1.89 (flow is Supercritical) Open Channel Flow Module, Version 3.21 (c) 1990 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Triangular Channel Analysis & Design Open Channel - Uniform flow 1 r r a y a y Worksheet Name: Ridgemont Est N 5th Comment: EXISTING DITCH, flow from S. to ex'g. C$ Solve For Depth Given Input Data: Left Side,Slope.. Right Side Slope. Manning's n...... Channel Slope.... Discharge........ Computed Results: Depth............ Velocity......... Flow Area. Flow Top Width... Wetted Perimeter. Critical Depth... Critical Slope... Froude Number.... 3.00:1 (H:V) 3.00:1 (H:V) 0.030 0.0637 ft/ft 13.40 cfs r o o - -(E7A Fr-OW 0.81 ft 6.85 fps 1.96 sf 4.85 ft 5.11 ft 1.04 ft 0.0175 ft/ft 1.90 (flow is Supercritical,) Open Channel Flow Module, Version 3.21 (c) 1990 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Curb Drop, 7" Deep x 10 LF Sto 20+40 to 20+50 18'RT to onoro Street, with Concrete Single Barrel Myaviell,l•y~sa A" with urb inlet, Type 1, L=10' Metal Frorne & Grate. Typ Flo 3 Spokane County Standard Spokane County Standard, Sto.20+25 FElev 2027.75 to 2027.57 27'Rt of Sonora Street Sae Detail "A" Tap of Grate 2027 00 See Detail "A" L Bottom of Pond Sto 20•+20 to 20+50 2 6' to 46' R't of ~ Sonar Case ent Floor Elev Floor Area 6006 qOf t 2.5:,,4() ' pra'r'agl See Detail "A" ro Y Y ti [P 1 S U A' , 1 . Y O 1 1 1 G 4 { ~ t,+ ~ SS 1 ,gyp ~ S o a' 1 Y 1 ' Y V, cc 1 ~ Q 0 A' 1 Y u, 0 r`1 Y 0 ~ Y Uy 5 Y J 1 Y } 18 30' Building SetbaclK 7 30' --------------------------------1----_-- 1 10 utility Easement 100 19' " ~ r- Curb Line R = 20 00' T = 18 37' L = 29 72' GRAPHIC SCALE (IN FEET) 0 10 20 .10 NOVEMBER 22, 1993 I 1 ° = 20' R LOT •"a'~t~T5lTi1-~~iffJT7tG RIDGEMONT EIS- ATES NORTH 5TH ADDITION N 9 Ci1nL ENGINEERS AR & ` CGItME E: Ro~, D a: SPI]KMAr. WA 99212 PH 9:6-13?2 L = 90'00 R = 20 0o T = 20 00 L = 31.42' U D7 N rV `0 c'q ca C A (,l tk7 _ D .a 0Q< p a C7 D C O ❑ Q, D ❑ LIB Cr] N Ly L- Lei ~-~~'Crb Drop, 7" Beep , 7 LF 00^ Sta 1=R 14+82 32 to 14+89 32 RT 21st Court, with Concrete Curb Inlet, Type 1, L=7' Spokane County Standard q opening 14+85 82 F.L =2028 99 See De tcl w~ r, V 10' ~ 4 I u < + + a co n 9F ~ T ~ ❑ Lit ~ - Lh Lr) N C] Z D L ❑ Y3 n ~ rv f D - 4] N a U/3 q7 CL3 ~ ~I C ❑ Q ❑ o p Y <r o _ (N 0 D CL c ❑ m Mt in r") 1-11 f ~ 18' 7' 10' c N v c ❑ J ~ T U 9 _8 a Cura Line 1 i' 1 aO I single barrel 0rywell,1ype "A with 'n 4'i metol Fromm Grote, Type No 3 10' 0Id11 j Ecas MenL ---5 prQ Iae linty Ltondgrd. Sla 14x-93 I 27'Rt ❑f 21st Court Q i_ Top of Grate 2028 50 I in See Detail °R° r I I I 25' 4 [ 30 Building Seloock rT-______---__i_„___s_-- - - - __i_____ -,1_j J 32 i I I r N i ❑ I t~ I N I ❑ iC % I C3 LQ r^ 4 ~n ~ N7 r 5 I ~ I I ~ __v I o r ~ i vey I f f e r I ~ I m I I O 6 I i I I I 30' I 120 OO' N89'20°22"W I NOVEMBER 22, 1993 LOT 5 BLOCK 1 pNT ESTATES NORTH 5TH ADDITION GRAPHIC SCALE (IN FEET) 0 10 20 d1o I t' _ 20' rwnava L~+u Impson Ertymeor•s, hic CIVIL. ENGWEERS & LAND SURVEYORS IJ 909 ARCOf'U-1E ROAD SPOKANE, WA 99?12 PH 92a-13'2? RIDGE OP 2 08 CND : SECTION DETAIL L) NOT TO SCALE w ~c L.1 a BACK AND SIDES OF `208' POND + TO BE HIGHER THAI.1 PAV'EmEt1T S10E POND ENTRY ~ C3 0 n. d VARIES. 3' MlN. VARIES - 4' WN• I ar e ORYWELL GRATE LJOI P00 KITH CRASS 5GC CONCRETE CURB INLET PE I SPOKANE CO. STD. C4- PORTLAMN r-w En+T CONCRETE 1 '248' POND FLOOR ALAN VIEW: ~ - i POND ENTRY SLOPE SOD TO TOP OF ORYV~ELL OR MASTIC AI4Y EXPOSED JOIr4TS "~-IASPHALT,..~ 'L'-2" MINIMUM OR AS EDGE OF PAV"T. SPECIFIED ON PLANS OR BACK OF CURB DE J" UL it . 11 RIDGEMONT ESTATES ,.NORTHSTH ADDITION r.f, s i+a 'r impson bigineers. Inc RNL fttDj4[[H5 A L",O SU1114TW5 x+.909 s.RCC--?lC ROA0 SPNAIX, OA 49211 Pn 916-1572 STORM WATER DRAINAGE REPORT for Ridgemont Estates North - 5th Addition A 5-Lot subdivision located in the NW 114 of Section 25, T 25 N., R_44 E.W.M. Veradale, Washington 99037 for Tupper and Associates, Inc. Septeinber 27, 1993 Lot -Mans Revised. November 22, 1991 RECEIVED F' otc U i 19A SPOKANE COUNTY ENGINEER 9967 1 slotvn~t~~' I EXPIRES ?,I 2f 9Ir I Report Prepared By: Simpsozz Etigin+eers, hic North 909 Argonne Road Spokane, WA 99212 OFFICIAL PUBLIC DOCUMENT SPOKANE COUNTY ENGINEER'S OFFICE OR ~I PROJECT II 1 SUBMITTAL 9 ~ RETURN TO COUNTY ENGINEER STORMWATER DRA[NAGE REPORT for Ridgemont Estates North - 5th Addition "TABLE ❑F CONTENTS Summary Table: Drainage Basins "208" Pond Volume Calculations Rational Formula Hydrology & Bowstring Calculations Capacities of Curb Opening Inlets Stopping Sight Distance, 21st Court Intersection Sight Distance Analysis S.C.S. Sails Map and Description Calculation for Existing Ditch @ SC ,End Lot-3 "208" Individual Lot flans "208" Monet: Section Detail Supplementary Maps: 1. Drainage Map for'Ridgernont Estates North _ 5th Addition 2. Street Plan-Profile, 21st Court STORMWATER DRAINAGE ANALYSIS for Ridgemont Estates North - 5th Addition A 5-Lot subdivision located in the NW 1/4 of Section 25, T.25 N., R.44 E.W.M. Veradale, Washington 99037 September 27, 1993 SUMMARY TABLE: DRAINAGE BASINS Basin Name: SA 5B Units Total Area 17,320 121,380 .ft. Pervious Area 6,420 103,420 ft. Impervious Area 10,900 17,960 .ft. # Uwa s= Area 1= 1,000 3= 3,000 .ft. # Houses=Area 1= 2,000 3= 6,000 ft. Asphalt Streets 7,900 _ 8,960 .ft. 0208" Volume 330 374 cu.ft. Pond Floor Area 600 708 .ft. Pond Perimeter 100 104 lin.ft. Pond Vol. 6" 350 406 cu.ft. Pond Vol. 8" 491 567 cu-ft. Pond Name Location SA L-1, B-1 5B L-5, B-1 NOTES: Driveways are assumed to be 1,000 sq. ft. of concrete per each lot, and houses are assumed to cover 2,000 sq. ft. per each lot. Portions of Lis 1, 2 and 3 have already been included in Drainage Basin 6 of R.E.North - 2nd Addition and Basin 3C of R_E. North - 3rd Addition, including houses on Lots 2 & 3 of this plat. Conversely, a large portion of Lots 1 & 2 of Ridgemont Estates No. 4 - 2nd Addition is included in Basin 5B of this plat. I "208" POND VOLUME CALCULATIONS IN GENERAL, for any drainage pond with 4:1 side slopes on all sides, the pond volume can be calcuated with two components: the volume directly above the floor area plus the volume above the side slopes. Volume is calculated at 6" depth for "208" treatment and at 8" depth for storage, as follows: At 6" depth. Pond Volume = (0.5 ft. depth x pond floor area) + (1/2 x 0.5 x 2.0 x pond floor perimeter) = 0.5 A + 0.5 P At 8" depth. Pond Volume = (0.67 ft. depth x pond floor area) + (1/2 x 0.67 x 2.68 x pond floor perimeter) = 0.67A + 0.89P POND 5A: Pond Floor Area, A = 20 x 30 = 600 sq. ft. Pond Floor Perimeter, P = 100 LF Volume at 6" depth = 0.5 A + 0.5 P = 0.5 (600) + 0.5 (100) =300+50 = 350 cu, ft. Volume at 8" depth = 0.67A + 0.89P = 0.67(600) + 0.89 (100) =402 + 89 = 491 cu. ft. POND 5B: 2.68 feet --~I 90 FbMI> 5A Z0 Pond Floor Area, A = 1/4[x(14)2] + (11 x 14) + (16 x 25) = 708 sq. ft. Pond Floor Perimeter, P =104 LF . Volume at 6" depth = 0.5 A + 0.5 P = 0.5 (708) + 0.5 (104) = 354 + 52 = 406 cu. ft. Volume at 8" depth = 0.67A + 0.89P = 0.67(708) + 0.89(104) = 474 + 93 =567 cu. ft. ~PorJD 5B FLOOR,-1 s Pond Floor ssssssssssssssssssssssssssssssssssssssssssasssssssssssssssssss*ssssssssssssss~►s** RATIONAL FOFdMULA HYDROLOGY DATE = 9/2A/93 DESIGNEE: D.H.C. DABIN CA PROJECT NAME = F'1 DGEI"IONT ESTATES NORTH - 5TH OfDD J. T 1011 DESCRIPTION STOI:MWATEF DRAINAGE TO ON-SITE PONDS SUBAREA 1 = .1-:174 ACRES SUBAREr, 1 RUNOFF CDEFF 1 C I EN 1 = SUElA13EA 2 02---' ACRES SUBAREA 2 RUNOFF COEF F 1 C i EN-E SUBAREA ?-16 ACRES SUBAF'tiEA RUNOFI= COEFFICIENT SUBAnEA 4 _ . 1 C31 ACF~Ea SUBAREA 4 I~UIVUFF COEFF I C I ENT = TOTAL AREA = ACRES COP'IPOS I TE RUNOFF- OVERLAND FLOW VALUES Ct .15 L J CHANNEL FLOW VALUES L = Z 1 = =^t5 -s L.6 Z2 = .172 N . 16 B = (7 l_D . 15 6 COMPUTED VALUES DUR 5.1:0 110 - 10 D1C; = • 7c3 OA = .77 .1 / il .9 "I . 61 4 3 10 -1 ' F-DWSTR I11G C:AL.C:ULA T I ONS DAT'C = 9 /2.119-7 ICI=ga lIaNER µ 13.1+" C., F ROJELT NAME iti l7]GEMO T C Tr)T L S NORTH - 311-I ADOI -E I ON DESCRIPT ION rv STORMbh;TER DRAIN AGE TO ON-SITE POND'S k t 11-ItEWf]s1't^y Qdev. t,'i3-1 VE=1f-l-L SL orEg ~fifili. 1 4SEC: . (zn. /hr Q:. I. s.) ~L kf 1 t. ] (CU.. # t. ) (CU. Ft.) Jn r] ,h i] 1 1. C7 .7G 1s_ 'J4_] 1~2 1[]. 0 i X1[7 2.2.4 . ` _Z_14 1 15, 0 90o 1. 77 4 4 _i 2'7 C; 20. 1 '30. Cd 1 C300 1 04 .25 Al B i • ~ 40, 11 2 400 . e21 .2") ~f_S1 7 C) .64 .16 5 9 fa4].f°] ~f~(1ES .61 1:a ~iur1 1.'_H) 70a 0 4200 .51B . 1 609 1` _0 f C's . 1 C, f;r .1j 2 . 1 rj'= dl 1 i ] -,9 7 c~ 90, f-1 5A;_,0 . 50 1 x.' 671 16 2 _ c- , >r-49 95. E? 15700 .49 a 1 '2 69.q 17 10 -10 11 1i1C], cy 600C) 4 Z4 fa . 119 71 `j 1 800 - 10"S5 IT I-1E I° AX Ii" IUM STORAGE 10 22 1 . 94 4 07:=' CU. FT. Por ]T.y SA voL-um5 C~_ 6" Dev-fa-t ihE •tIfn r 0f• c E;3n[~ar1 tr-aticn is 5 min[afLoj3. Tha U deveI aped •f 10W OU t i s . ~ (7.,f a S. > 7ym "14' Dp_ljWF_L-J- ljTE1'1 YEAR STORM CALCr RATIONAL_ FORMULA HYDROLOGY DATE = 9/24/9= DESIGNER = D.H.C. BASIN 5B PROJECT NAME = RIDGEMONT ESTATES NORTH - 5TH ADDITION DESCRIPTION = STORMWATER DRAINAGE TO ON-SITE PONDS SUBAREA 1 = 2.074 ACRES SUBAREA 1 RUNOFF COL= FF I C I EHT = SUBAREA = .069 ACRES SUBAREA 2 RUNOFF COEFFICIENT = 11SUBAREA = = . I =;G ACRES SUBAREA 0 RUNOFF COO F I C I EHl - SUBAREA, 4 = .206 ACRES SUBAREA 4 RUNOFF COEF i C I ENJ = TOTAL AR EA = 2.78 ACRES COMPOSITE RUNOFF COEFFicimr OVERLAND FLOW VALUES C t = .15 L = ?6{ j N _ I CHANNEL FLOW VALUES L - 25-6 Z1 = ' ^ .172 N .016 B - Cl L 1-D 22Z C VALUES DUR 6.23 110 = 2.59 010 = 2"08 QA - 09 .is S 25742714027 Bows1-R 1 Nic cAL_cui- Ar 1 Cll:ls PROJECT NAME = 1°tI DCIE f'IDN L~~iT~ If~°ci NORTH - 5TH ADL 3 I' f ON DESCRIPTION = STU al` W A l-Ek DRM 1 NACE TO °i E PONDS t. t Intensity Ddpu. YLJL_lt SLL-J:- ~ffi3.n. J [Sec. i (16-1. /hr-. ] (C. f.5, ~ (CU. T t. ~ (CU 1 t. ) [C Li, i t ) I ® 0 61-.11) 2. 24 1.61 1 16? 730 3-7 1 . 0 90) 1.77 1. 7 1 -10.1 1 170 1714 2C_1, 0 1200 1 . 4 J 15 BI 1f60 -179 25. f l 1 5-.'r1 1 . .11 . lea 7 I al 1 ° ] V 0 -'5. 0 210,1 . 41 . 6ff 14~1 2 ' •~1 ° 1 2 76 40. C] 2400 . E12 . 1317 i.r€7 l 1710 - I . 4',j. C) A-700 .74 . 1171 _ 1 I 1 0 --D IC0 ~5. r b0 CF .64 . 46 15 0'4 42-, Ca 27 d L' ciC7 a C1 6 C1i 1 .61 4^1 16-% 3 4c'I)DC6 61I. 0 7?ou .60 1719 7Cs.L.1 4~i1f1 .58 .42 loci 1 :J460 76 5cy 7`,. 0 150 i~ . 56 .40 1 B4 , J aaL~ -100, a 1 f 3 7-'1 t°_ -F tl r , k Cam. 5100 . 5 . 1, 7 19711 6,s ®-1699 95. G 5700 .49 . y ."i f Cl -:=y6i 1 _sL7 . s 1 1 1[] . 48 I I 1 Q _ls_1 `-4~`~0 THE NAX I hlUN 5 T'0R ACHE I a w 54 . 'WSJ w ~ :Jrza2.a GEJ. FT. ~raNZ7 55 vaL ua-ii5 & 8" 7r- - 5 G '7 CU • r7. The time o-f coricentrak,ian is 6. 2,02(.6,,, CE71.iiutezi. ThL- Undeveloped i 1 cw out is 1 . ~ C. f . S. -40 TYPE `'A k T` E Tap-,,wEL.Lz i s 6L6 `J 1. -a6-• r;-rr 6vk6Yt r n6 r• CAPACITIES OF CURB OPENING INLETS BASIN 5A: Q10 = 0.78 cfs to 10 LF curb opening to Pond 5A @ Station 20+40 of Sonora Street, in existing curb on continuous grade sloping downward to the north. Refer to Figure 16 of "Guidelines for Stormwater Management" L=10 ft. a=1" y=0.156 ft. a/y=0.083/0.156=0.53 Qa/La = 0.077 cfs/LF La = 10.1 L/La = 10/10.1 = 0.99 Q/Qa = 1.0 Flow Intercepted = (1.0) (0.78) = 0.78 cfs Flow Carryover = 0 cfs Construct 10 ft. wide curb opening from Station 20+40 to 20+50, Right side of Sonora Street. BASIN 5B: Q10 = 2.08 cfs to 7 LF curb opening to Pond 5B at low point, ER 14+82.32, 21st Court. Refer to Figure 17 of "Guidelines for Stormwater Management" H=0.223 h=0.5 Q/L = 0.33 cfs/LF H/h = 0.223/0.5 = 0.446 ft./ft. @Q10=2.08cfs, L=6.3feet Construct 7 wide curb opening from Station ER 14+82.32 to 14+89.32, Right side of 21st Court. 25 P. I- n ~ W1 1 -7w N ~ 1 14±44.32 m r 3 1 c~ I ~ I 6.52'01 C O Curb N1 X35.0 0• s4•\3'z,' \ Curb R + 20.00 1 ;0 95.08 03• W I to. 2 ( It R • z0.00 co L• 18.93 S 1 %-T• 18.31 cr) M Q1 ; 11 s 29.'12 O am 1 r- M ts Building Setback o 10' Utility Easement o 13.27 C 2-TOO. 7.9 S \ P 7.82' ~ ~ ~31K r ' y ,c D N m°~ ~\•ti`' 16+59.32 17: 1 215.00' 14- - r----- t S89'20E co ra .e ,J c c°v e, .9 o h ` 31x4 100.00' 6.38' •1: y 10,-, Utility Easement n 1r 3. 1 !e' • W, cRN,.vcic fwseMeNr - -.j Z.-3.03' o o . I _ LP ~ l-Building Setback f Curb 4 'F'13 27' • i9o'oo'00• M R2'20.00 • I 1Curb too ~I R • 110.00 U; 01 T • 10.24 .4 T • 20.00 L z 16.93 L •('51.42 rO N 1 O Q M 0, STOPPING Sl HT DISTANCE F0 F- zl~ COUP--r Ass um PnoN 5 HEN GHT OF OF,~IECT e Lout Pot NT = O. 5 FT. DP,IVEtZ 5 E`1= HE16HT L° CUL-DE-SAC = 3.5 FT. 00 M rn M O O N N0.4 - - - eRO E. - Upcr 7-7 - - - N _ _p _ ko J d.. _ M I - - - ~ It--- UN --L1 155TR OF. ED -.SIGH - - NE _ - -2• - -v- _ _ Ex St.iin9 :Grou. - _ ENT- - H - - _ - I~ ~ _ e r\t - - - A- 1.'1 ~ - . - 1 - A - N - - - MSC - "-HEf -r 1.10 HT_=. - . - 5 F f.' I I _ - - _N N DR1 IZ5 E H EIGHT 3.5 8 1 ~ Iso( nI 6 u=~ I SIGHT DISTANCE ANALYSIS.- 21st COURT For a car waiting to merge from 21 st Court onto Sonora Street, we will make the following assumptions: 1. Driver's eye is 16 feet behind the gutterline of Sonora Street. In terms of street stationing, with the centerline of Sonora as station 14+44.32 of 21st Court, the gutterline of Sonora crosses 21st Court at station 14+62.32, thus the driver's eye is at station 14+78. 2. Driver's eye assumed to be 3.5 feet above finished grade. At centerline station 14+78, the finished grade elevation is 29.88, thus the eye elevation is 29.88 + 3.5 = 33.38. 3_ The centerline of 21st Court is at Sonora Street station 19+57.56, so the driver of the merging vehicle is at about station 19+60 of Sonora Street, 34 feet right of centerline. 4. Existing ground at the intersection is at elevation 2030, and slopes northward at about 2% to 3%. Thus, the natural ground is about T to 4' below the drivees eye at the intersection, and therefore does not obstruct the view of approaching traffic. 5. Sonora Street is designated as a local access road, with a design speed of 30 mph. SIGHT DISTANCE REQUIRED to turn left onto Sonora Street across one lane of traffic and merge with traffic from the right (refer to graph on following page): Sight Distance to the left: about 310 feet (Graph 13-1) Sight Distance to the right: about 375 feet (Graph B-2b) SIGHT DISTANCE REQUIRED to turn right onto Sonora Street and merge with traffic from the left (refer to graph on following page): Sight Distance to the left: about 375 feet (Graph Cb) SIGHT DISTANCE AVAILABLE TO THE NORTH (Driver's right) Distance to see approaching vehicle: over 375 feet. (Refer to attached sketch) SIGHT DISTANCE AVAILABLE TO THE SOUTH (Driver's left): Distance to see approaching vehicle: over 375 feet. (Refer to attached sketch) Condusiun: Sight Distances are adequate in either direction. Reference: AASHTO - "Geometric Design of Highways and Streets", intersection sight distance at an at-grade intersection. 7U ES CO 35 s~ ■5 ~S 3D as ~P Ca D ~ ►D k vD coo t UD 1DOO 12E)D 14 DD MUM) t- - SINN DISUNCE LfiR P WHRI LOSSWIL 2-1AN1 RLHW' FRDW SIDPASIE V;LLRAu]- E-1- STG~i1 1D,511X11 F ()R P 0.' HI'l f 1 TOr ta;}aL L1 f 1~~ D FRDU LLFI tSEE DUCRAu1 WHi i01SIL1111 IM P VIRM IUnN WC LEFT VID ArALNE H'G VLs 11LRDSS P VIH;CTE APPRDRCRr:C fRDa IEF1.ISII DIL LkAM) B-2b- SiX D=SI0'CE FDR P G'IKiI ID I1.Rf: L I F 1 119') 0 711WE R-CH►'RY -AVD 01 AIN' £57 DT VISIN SPEED VJ7HDJ1 UNC OVLOPU BY A ITHICTE I-PPRDRCK-11 C FRDv 7HC IRIrH1 fiID;37r;C SPIED FFD ► DT51wq SPEfD 10 M Or 'UIS~Gf. SPEED.ISEE V4PIu1 CD- 5}aril D:S1 R~: C[ E DR P 1'i Fi'u l [ 7 D 3 Tlrt; 1 1GH1 Ir:1 D !-L Jkt:fi F: NIC Y P.0 *11M),' E Y/ CAE Di S!u!; SPUD VIIH .11 b11',C D R14KIN; £Y R I'£H.;IE IFTF :[41121-:C FPDV U[ IM F1 III: RED'tCt.-T TF'.I" pu's : Spill) 10 F-17 fir 141_1)1T11-1 SrECD. Figure 1k-4D. 1nterscctlDn sight distance at ut-grade in1t•°1seC11Dn (Casc ]i!B and Case 111C). rte, to ry• dr: • It fi Ln H ve--IICLE APPAOA CN►NG ~ FRo r~ N ~ R-TMI I 1 DISTAK -E = 400 FT, 1 1 1 . . Ripo£Mo 1 t 11 2 O NrFI 1 6 1 ~ 'C / 1 I COO ' R. io t6. 0 IVW YprNN. ~ 1 J - yy ~ •i r (aa.aw at. O • t1 d ` C, ~ Cp- . [.Lcu , £ 11~ , 0 5, 0 e•.:°: ~i tee..... t S N g'S2~ ,~.o~ ,'r t ' I 1 .>e aw ma,H w loll u V , iAw~tt t. • b IY. (r W' ISO pu~~ I • / 1 O a, J y &."m StR7 ^ .9 g a.o,..~ r w+ .ap. ioi,o Ip 14ERG I ~l IJ E:,I o N •t•txrr•.i'~.r. - - 1 W w a.an a6ilu wr 'v1 1 ~ 584 20.2YE - FK l MWt ew. •A , f. (.r'w•.r r.r.) I 100. p NOIy~ i.nwd n B.3 I d.. .i.m a,'e..•.E ul1 E.O k b,'~ 3 MO I R ( Sal.aU ,.Ir e«. au,r. to te.~ Odw.uec P0,40 ' SB' ~ L•L' S $ w R, r a suv . a0. . o I I I of n rtro wmt buro 3 i.../ w i . u ( I h , Oa.ra•EWrI {~uw d T.n'O' i ,1Dnn ] ~.ew ~`t~• I I iPD I I 6+• I \ I t O y !.w 11 M, if a.t r E .1s.0iM aT. 7bI.IO'1..... aoa0•o II ~ ` 120.00' ~ O C-0- Mu 0, _ 1 ~ 1 ; I. pwrw. w.at ..I. 25 ~ I I , I I I RIDGEMON X 1 _ vE:HIGL - AcPP RoAC-HINCq FRotj Sov H DIS Af- JCE = 4-00 F-r, SPOKANE COUNTY, WASHINGTON - SHEET NL (Joins sheet 67) k_ 44 E. I R. 45 E _ I- ..(t.{`'; Z' h!_',~1' ~~~'*'t ` t. %t' i, .t 1,, i ~ :~j S((•r ~rl' . ►.ti'~ 't•(:t ~l;.I . f•..'{~IG•~' •I+1-r'_'= 76 .•i~'~;„i1A~t'I^:, „V+;r. 111tt:J~~,j .i~`: 1+'~' O~{~~•+~ ~Ti,i.~~! I, w, .~^'I "i~' ';I~rl t'••,i:, i~1.G~{~~' ,._`.t •I~•'~ pAG 'x•11 :Sr NAUC t 'r.1 'itno 1 ^';i' 7 m'''tl~ iGH CAGO' .l~il I.'~:i+ir• :MIL (1KEg• ; , r , , . >S :r r'/r: '.{J~f' Y ' % ill=' I ~p ,1~'f' Ik i, eZU t i~♦r t is ' ..~'''i ^ X' ' • a'• - I ."t r_• •11' 'rr'i.ili,rtF'r .l• \ 'SII J'''rl 1 tn• rppr ,i 1 jj' i • _ - .~,!r ,Y,'~i .M,,i; r ~tL .f7~,~}a)f!• ,rtg:~,~ra~~ ~f' r C If P _ - 11 ~;,i •P,f':fj;" Gi4 , ~r ~F:., rti` 0~' it¢4t t ' ~i I ~U~~ Sit • •r~ t r U r ~ . ; .i✓'_ (r' I, `k~lu: 1 t~• til:l~ ",5~.• t' j Z, .i," lulic ~'T >.~1. ii .e S"•~'.1 tr~~ I (;1.U~~' 1~a i 5~+1~' 'a, t, i• 1 d ♦ I Gn1B rm6 • • 1 ~'ii,. j'S ;.i L •L; >-N'.~• 1 .:~..:a- ~ 1t• I . ,e. •r' CnC tir _ • . s, pn ►~'t it • r Cuotr++{ Vq{{ey. r-4t.•:}• "1 tP}±{. S'.~; ~~1,'~tr. ` ~ . rr t ,l~' I i { . Gme'.: t .,i P I 1. }Fc ~-r •li rl I, I. •r •I t r"'i i • I;t , T. 1 ,,.,~'!l1•y ~AP :1• ++FF,,11''fi~~~ •,1' 1t'~ 'i: ~,'/•11I t• ',0' tie _ +o :i' ..Aj':,~ 1, ,'1~ "~i.;'q'•1'R ~:~a ':,'~~,f'~+U• • IGgQ~ G: _ • ` ' "Eli IJi~^ •i s• } 1': i~r;l is ;t : t :r 1.' , t,aG • 1 r.,.f.•r;:, ~U' , • ; ~ rti { ~'Y( f 11P~~' 'crll~ ~ : n • 40 r•I513 8a8 • ~S, 7~.: j .r }t• ! }1hB A}A L.iG Bsfi 7.77-1 77 ~,Fl"- - • 1. + 1 '1• t1 a: % + Y '1}, , . ~P i C r•.2 1 PaA SAG ,'j'ri Lit" ' t ,•t: -',~y~:'t~, •t /j ' •t~' 1 1 T'~"_ P r UItB rn i ;t, ,1•; r N ' '~'c •1 tP w. `J/ L Okc. C 0' ~ ~-'t:--'t; ~ ~ G \Q Ss•~'•t'. ' ;its . I ~ Ate , .HIB •e Bad % i "r,' PUB f• ~'~~p~ ,ten ' 'i `a.. { ~xB .r. 1' +t' I 'Y , „r:~ `''•:4;•''1. Cod' i t~ n . , T 71dj~ ' f Bs6 l'L~ ,r+`.'1. ale + ' O I. ii ° •r tl ai. !k: r.~ sP ~mB• Z Cup ,IS. ; j tr I i~ ate TII, ,.-r..., :.•ti,y,.'•7 .Y•1,. ~ t , _ ~ ~ ~ 1; II il: l k `r+,rrG•f I' 6, tit. Ji} •'t'v y:.,1r1 ;l!:« i^=':0:~.i,l yv; ~!'~\6 I ! , t` r •t~'`f .0 1 , I: IY•i{C~ t: t i. . i , .1 . ~uE~.. ' Ggs .+.;tl•l'-. ,f.~("`,'^j.jli.,••~r,.A F':~~1: I•~r~ .l_ a 1 ;j. ci :'~a!"~ iij.eGgA: :'11^ . :+,►`t'~ !b: .,ti:'• ~w.~try' r(~ !••T-i' .1 hnq ~~R} '~,r}: ,i'...; +~,,'1.. 'll .!`$.'r ' ' t, i .•ti. ''Y• 1 ~ i _ - ~~~r_ i•^ :1 p 1''r.l "At~.l~. _It: :':ti:,• .''I'. .II I~~ ,'~~'i~ (rxx;+tllr. al rlr. .t „ k~•F.,G 71.(~ef.?'~e _1 y 'T,'. I , ' U:• l ,A. l 11 + 17~ • , i; Il 1 c •~'!I _ ~ tY. l;:. II•'ei~ -..Y.1~.k•;l~y~'.l~l'i''' .~s.. •I! 1 r• t~ CU13 GmB 11, 1.• S:•i^T,I ~y ~I i.: - , ' ' 1 ;y~ II h ,~,~~t•..4!( /I~~•1•I PSA F7(,~••i' B~,B t •t ( 'r•Ir I; / .t. -J`E,~~i h:~~, r~•. i 1 ap~'' 1•ri ••.1• w rM~Z •l~ ~ I, ti{t/•..I:I', I 11 4 %:';'~t h ; Pc P4A y' ~Y~r`j :d~g't~r.tr'~j ~b~i q}~`~ .GgB. .1• tl 1~,~'e: ? + Nv ~ { ~ u • M''7,• C t. Ncf1 ~n• . I 1 A +f?,K~r .+x~ C t:i~~ . L~Q~11 1 n k G&A fl 1' i,. \ . ~j.rJ-0~. 'y' i ~i I i , S. t t f .y -f' ~t' rr' S At rry y>y t I +y'►~r~"'r • . 6 t PsA r~ R ' S4 -V r L• l1f l " GRAV L :MOB : r; , F 11 • ty. ` 11.4 ..+t. PSB L, )~~G•~,{t.~~ r:yr~i!'•l,:.`• { 4 fSsCt ! f• Bad ►1 R•r ; `G 11 ' ` :1 ti;t ial •ii •~1'.+' r:r•;~. ~ ;1, s•• f~',•~j, t., 1 I i;T pi~~ 1 r.+` t tL ~ SC r' r r • t,l' • S13 `1 • i r r1nA ; - \~•Jti+.~ ~•;•a r' rt., tr Kc Kd~~ t, ea8 ;a l( t~i..,i • Una ~'6t, •v' ~L •".QI. J~►; t'JC'j:~ •r~ ~j Y''r. 1r ~'~T `~..r ,l 'f~ i~ J~~ . v• 0 Ci 9 t •.1' ,~S'r,' ' tiJ ~~}t• r 1 1 tI'° A Ssc 0) U4A . .?'.i•h•lrl•.,•J.;% r,t~'.~t-,'~; ~~rr'~` ^`t Y .a~~1,•i`,(1,.'t.y•ya'.~~ ~ ~ir4t•~.'~. t :~1'Jt' ~ y;' t}I- t.. ..l• ,1 + ;SQ t/ir,l:.•i ='~.i'l.~t';. :t l/•;: ~ "rr. $ )).Y!' j'. Vii' ~ .1 'Z ew i~t1=t l` .~:tt .tft t:i 1ih I_x { 1'• t,l (Joins sheet 85) alto 74 h1up symbol DsC DsD DvD Ek8 EIC EID Em Fa B FaB3 FaC3 Fm GaC3 GgB~ GmB GnB Gp GpB GpC GpD SOIL SURVEY T.tULI; G.-B neJ dedcrip1iudna uJ aud. and flue Soil mute DCptln Debcriptiun of boil and bite fruin burfaca Dragoon btouy silt loam, 0 to 30 percent slopes. Dragoon stony bill loum, 30 to 55 per- cent slopes. Dragoon very rocky complex, 20 to 55 percent slopes. Llolku silt loum, 0 to 20 percent blopes. Lloiku very stony bill loans, 0 to 30 per- ecut blopes. Eloiku very btony hilt louun, 30 to 55 pcrccuL dupe.,. Lntdent silt loam. Freeman silt louin, 5 to 20 percent blolx5. Frecutau silt loutu, 5 to 20 percent, blopes, beverely eroded. Freumuu silt luani, 20 to 30 percent slopes, severely eroded. Fresh water inarsh. Garfield silty clay louni, 0 to 30 percent slopes, severely eroded. Garrison gruvelly loam, 0 to 5 percent slopes. Garrison gravelly loam, 5 to 20 perccut blopes. Garribon very gravelly loam, 0 to 8 percent Slopes. Garrison very stony louui, 0 to 2U percent blopes. Glenrose silt loam, 0 to 5 percent slopes. Glcurobc bill, loam, 5 to 20 perecitt slopes. Glearobe hilt loann, 20 to 30 percent slopes. Gleu'ube silt loam, 30 to 55 percent blupcs. Similar to Dragoon bill loam, U to 30 pcrccut blopCS, caccpt that the 3111-face layer ib btuny. Dragoon part bins lur to Dragoon bill lu:uu, U to 30 percent dope.,, cXCCpt that duptll to hcll- rock ruilgi:s (rout lU to 2U ituchcb. !tuck out- ciup included in this complex. Medium-tcvtured, well-drained soil funned from glacial till containing a large :uuuunt of t•ul- cauie ubh in file zurface layer; mlderL•uu by gravel at depth of 30 to GU iuchcb; uccupieb uudulutiug, murainelike topography. Similar to Lluika At loam, U to 2U pcrccut blopcS, CXCCpL that they are vciy btuuy thtruughout. 1 CdiUm-textured, somcwhut poorly drained, ulkuliue soil formed in alluvium frutu calcur- Colts silt, volc:ulie huh, •wd diatonite; depth to water tulle Ilucutateb ftuun near the surface to ubOUt G feet. Very deep, moderately well drained upltund suilb with medium-textured burface layer and utedi- um or moderately fine textured subboil; formed !runt bill, uu rolling to billy uplandb. Shallow, bt1•anl1,y, intt•nuttteit pond., and fringes urouN L•akei that have a tlltettiating water table. litngincering data is 1101, given, ub laud type is Lou vaitable. Very deep, well-drained boil developed in louts on rldgcwps aid knob., of 011: ,•0111ig to hilly upl.lutlb ill tike Paluubc boil arca. Gravelly, mediu0a-textures, boiucwhat excub- bivCly drui ied boils formed ii gravelly glacial outtvabli material from a v:uiuty Of acid, igueoub parent rock; un nearly lctcl to mud- ct:ttrly sloping te•raecb; depth' to unixture of band, gravel, and cohblc.,tu11eb ranges from 2' to 5 feet. Similar to Ga rribun gravelly loam, except that the outface layer ib very gravelly. Similar to Garijboll gravelly lo:uu, Cxeept that file burfacu Layer ,b very btony. Very deep, nlediul11-fe\l1Arcd, well-druhted boil., formed frut11 acid ignuoub gluciul till; surfuce layer influciietA by lucbs mud volcanic abh; on gently rulliug to bleep upluntls. /I1. U to 24 24 to -1-l, 44 to L3 53 w 110 U to 2G 26 to 41 41 to GU U to 22 22 to ;2 c6"iticatiuu Jilt lo.,u,--._.----.! Ur.avelly lu.lut_-._.-. Very gravelly zatad)' luaus. Ur.l\ el Salt lual n_ Very fine baidy IUAm. jaiuly clay lu.uu--_.1 Silt loaul_ silty clay loam_---- t Uto S 5 to 23 23 to GU 0 to 15 15 to -i-1 -ld to GU Silty clay silty Silty Clay loam...... Craw llt lu:uu---.-.. Very gravelly lo.uu.. Sand, ,,i.tvd, and cuLLL.btuna.b. U to 15 15 to 44 d-1 to uu 0 to 72 Vary gravelly luatu.. Very gravelly luaw.. Gaud, gravel, old CuLLlcbtuucb. S111, 6 impsonr Engireefs, Inc. CIVIL ENGINEERS AND LAND SURVEYORS N. 909 Argonne Road • Spokane, WA 99212 (509) 926-1322 • Fax: 926-1323 TO: "es , - 6 5 Pow SUBJECT: J~.jDGE-x4oKtC Esj-ykTES Mogm - a bMo DATE: LMEgdj 19 isn~j G wLv S CE-s wE7cmv 0g; ~nUi?-- E v -r u if- s?E-C4F-j ~ -t►.1 C CuweZ- u J LWID TkE U I 5 ° Qul-vgM 2-60w 'C1dle 5 do f ~E - SPOKAM I e- a Signed D62G SlN:$ 1S0KJ Triangular Channel Analysis & Design Open Channel - Uniform flow ° tOSA Worksheet Name: Ridgemont No.4 - 2nd r ~~~fk~ti tang ditch , flow from S. to Ex' g . CB Comment: 4 Solve For Depth Given Input Data: Left Side Slope.. Right Side Slope. Manning°s n...... Channel Slope.... Discharge........ 3.00:1 (H:V)K~~r 0* 3.00:1 (H:V) $ 7 0.030 gnu n or;+ ~s 0.0687 ft/ft 11.0 0 C f s a ~r• ,yana E E _ 4, 5 9 rF~ $ h" 71..I 7..d W F 2-1 CT.S E>%S 7'.,r 'IGNfT G Z--71 c-~s Computed Results : ~ ❑amB.- t a C-rz . . ~~}75;,ft I ~nS;~rytrlG rnwc~nV~ ?'Ky V Velocity......... Flow Area........ Flow Top Width... Wetted Perimeter. Critical Depth... Critical Slope... Froude Number.... 6.52 1.69 4.50 4.74 0.96 0.01 1.88 fps r sf ft ft ft BO ft/ft (flow is Supercritical) 'A Ac ~,El~ Puy- -PrarrcE IF P1Xkk)ATC' PA&t] n-r r~~aG rnarr~ Em~+a S .-jo ADb4noO ~ et cat= It' Tj rcr' I-t I] 19, 7-7 j. air NOTE : THE F111 I" rtt3 y0GE-M6+JC ~STATr=7 S Ner;-TM S 1-H "rD b tTtpa Pc+-1~ yT , THE p laJf i+~ Sir +'iIT?7r11- . 1~ [rlt 'fir ] I IT 81.+ R 6 D Falt- -&Eb T7ar-3 wises rnkceua~ rtiar~~ ihlFafh+4na~s h ovM ~ptL.Snr 3 R~ AIPD IT10N 'J'LA- 'hJC .ajpt' Dewti+Srs~ rrr t ti3a~rrr na•~}~~cT ►~'r~"J ~r Open Channel Flow Module, Version 3.21 (c) 1990 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 .FOL644 %bc 08row t4r1°l AS FF*T ®F Dr~gioAGE C+ 1 FoRL R.E, MOPLfH A1001-n0k] (su p JAW FL-OvJ W INTP- [E'S r~P-bM O L-b i4 r-+ A C eM OKST E-Srr1RE: 5 PLAT i -Curb Drop, 7" Deep x 10 LF Stn ?0•I40 to 20+50 18`RT oiiot'a Street, with Concrete urb Inlet, Type 1, L=10' Spokane County Sfondard F Elegy 2027.75 to 2027 57 Sep: Detail "A" Bottorn of Pond Sta. 20+20 to 20-50 26' to 46' Rt of ~ Son Floor Elev. 2026 50 Floor Area 600 sgft See Detail "A" S SS I ~I 0 S `a 1>h 1 1$' -Y Simjlu li.ai ul I}15~4i 11, I yl„ A" with Metal Fron-sc; & Cr atr . I yp1: (A0 3 Spokane County Standard, Sta 20+25 27'Rt of q Sonora Street Top of Grate 2027 00 See Detail "A" loser ent 2 x0 Oral no~e 0 bT ~ S S ~gs_ 1 i 1 ~ 4 S Sl C7, l S 1 ~p S t G t S 4 ? S p 1 4 i S 0 1 S~ CD } I S ~ S S Cf fit' S S n f S ~ S S S S s 1 t7' i I 3o'~..~------------------- 1 1 O Cal 0 30' Building Setback . 10' Utility Easement L_ 100.79' i~ A = 85'08'03"- R = 20 00' T = 18 37' L = 29 72' Curb Line ~r - ' - GRAPHIC SCALE (Ifni FEET) 0 10 20 •I0 t~ C]VEMBER 22, 1993 1' = 20' a LOT Lni FW...d 59+8 RIOCEMONT E RTES NORTl~ ST i ADdITION CIVIL ENCINEERS G LAND 'llRVEraRs N909 8 , AR aaCClnlNE FaaAia SPaKANF, WA 99212 Ph 926-1322 6 = 90'QO DO" `I R = 20 00, T = 20 00' L = 31 42' 0 U N + C7 Sel 0 o cc 0 ° c< cv 04 L off - ] 0- + ~ m ~v E -;r Ln o a 0 0 o°:-000 r17 iA1 CV I- L~ U) I in r~ ❑ 0 CD z o N N ~ ❑ In ~ ❑ O ❑ ` 110 L C7 a Ccli ] C1 C CN C T1 q~ ❑ ~ N c9-P a ~ ~ Lry Li D 0 ❑ O ~ d C? o 0 :2 V7 r13 I- 18' I m C a I RIDCt if Curb Drop, 7" Deep x 7 LF Sto ER 14+82.32 to 14+89 32 RT 21st Court, with Concrete Curb Wet, Type 1, L-7' Spokane County Standard opening 14+85 82 F IL =2028 99 See Detail 'A- 8800' i- `L Single Barrel Dr ell. Type "A" with ~ 4'1 Metal Frame & Wrote, Type No 3 r q okane unt Stondord Sto 14+93 - i ur © Line 10' Ulullty Eas.rner,t 27'Rt of 21st Court ° Top of Grate 2028 50 0 4 10' r`~a See Detail „A„ r~ I 3 r 25' 14-1 I 30' Building Setback ~iT _.t 1 _ 3 2' I I f ~ I ~ I EE ~ i ~ I 6 p5 I 7 c❑ _ I ~ I I 4 I K1 I ~ I tti I 0 J ~ I (D I I N Q d 5 ~ I r I Lei N v I I ~ I ~ I ~ I 7' 10' LD I C I ~ d I uCi ~ a1 ~ I f Q I ❑ I LJ ~ P _ I ~ f I I I I I NOVEMBER 22, 1993 LOT 5 BLOCK 1 0 P~ C7 0 LI) N89'2C]'22"W GRAPHIC SCALE (IN FEET) 0 10 20 40 i 1" = 20' NT ESTATES NORTH 5TH ADDITION 61-1 Fa.nc:tl IGIS Impson Engineers, Jim CIVIL ENGINEERS & LAND SURVEYORS Id 909 ARCONNE ROAD SPOKANE. WA 99212 PH 926-3372 "208" POND : SECTION DETAIL ro V NOT TO SCALE 4t C] LS Q BACK AND SIDES OF '20EI* POND 0 TO BE HIGHER THAN PA EMEUT SIDE w C3 p BOND ENTRY a VARIES, 3' MIN. VARIES 4' SIN, ~-I r pR U141 P010 WTH CRASS SOD { `fYl'ELL CRATE Ila CONCRETE CURB INLET PORTLAND TYPE 1 SPOKANE CO. STD. CILIENT MICRETE 1f DRMEU V '208' POND FLOOR PLAN MEW. POND ENTf2Y SLOPE SOD TO TOP OF DRYWE'LL OR MASTIC ANY EXPOSED JOItJTS ~ASPIiAL7~ ~ ' a' "L'=2' MINIMUM OR AS EDGE OF PAV'T. SPECIFIED. ON PLANS OR BACK Or CURB RIDGEMONT ESTATES NORTH STH ADDITION impscml EnglneeTs. Inc. QML E14014:E IS A, L.u.0 Sukv£ FORS H.999 AACOt.IJC ROAD r .Pfldwr,T, OP. 99211 Pn 9;1;-1577 ~ ~ ~E~`1ED 6ampson Engineers, Inc. MAR 2 a 1994 CIVIL ENGINEERS AND LAND SURVEYORS SPOKANE COUNTY ENGINEER N. 909 Argonne Road - Spokane, WA 99212 (509) 926-1322 - Fax: 926-1323 TO: e SUBJECT: f T-`1 DATE: Signed BOWSTRNG METHOD (TEN YEAR STORM DESIGN) PROJECT: RIDG. EST. N-5TH DETENTION BASIN DESGN BASIN: 5A NUMBER OF ORYWELLS PROPOSED . -I 1 Single (type A) 0 Double (type B) DATE: 11- -~~xi Total Area (calk.) (see H1) 0.40 Timed Canc. (kale.) (see H1) 5.00 Composite'C' (talc.) (see H1) 0.61 Time of Conc. (min) Area (Acres) 5.00 C Factor 0.3978 Impervious Area (sq. ft) 0.61 Volume Provided 7900 Outflow (tfs) 208: 350 storm: 491 Area * C' Factor 0.3 0.24 #1 #2 Time Time #3 Intensity #4 Q dev #5 Vi #6 - #7 Inc. Inc. . n V out SWrage (min.) (sec.) * Qn./hr.) (tfs) (cu. ft.) (cu. ft.) (cu. ft.) (#1 60) WC-#3) (Outf*#2) (#5-#6) 5.00 300 00 3 18 0.78 312 90 00 222 5 300 3.18 0.78 312 90 222 10 600 2.24 0.55 384 180 204 15 900 1.77 0.43 433 270 163 20 1200 1.45 0.35 461 360 101 25 1500 1 21 0.30 473 450 23 30 1800 1.04 0.25 483 540 -57 35 2100 0.91 0.22 489 630 -141 40 2400 0 82 0.20 501 720 -219 45 2700 0.74 0.18• 506 810 -304 50 3000 0.68 0.17 515 900 -385 55 3300 0 64 016 531 990 -459 60 3600 0.61 0.15 551 1080 -529 65 3900 0.60 0.15 586 1170 -584 70 4200 0.58 0.14 609 1260 -651 75 4500 0.56 0.14 629 1350 -721 80 4800 0 53 0.13 634 1440 -806 85 5100 0.52 013 660 1530 -870 90 5400 0.50 0.12 671 1620 -949 95 5700 0 49 0.12 694 1710 -1016 100 6000 0.48 0.12 715 1800 1085 DRAINAGE POND CALCULATIONS Required grassy swale pond storage volume = Impervious Area x .5 In./ 12 in./ft = 329 cu. ft provided- 350 cu. ft CKI DRYWHI REQUIREMENTS - 10 YEAR DESIGN STORM Maximum storage required by Bowstring = 222 cu. ft provided: 491 cu. IL CKI Number and type of Drywelis Required = 1 Single TIME OF CONCENTRATION (minutes) Tc (overland) Tc (gutter) Ct = 0.15 L2 = 325 Ll (A) = 5 Zt = Z2 = 0.172 36 NR = 0.4 B= 0 S(A) = 0.02 n = 0.016 Tc (A) = 0.74 S = d = 00127 0.152 L1(8) = 0 Tc (gu) = 2.93 N(B) = 0 Tc(A+B) = 0.74 S(B) = 0 TOM) 1 Tc (B) = 0.0 y = Inteensl 3.8 Tc (totao = Tc (overland) + Tc (gutter) Tc (overland) = Ct*(L1*N/S^O.5)-0.6) Ct = 0.15 L1 = Length of Overland Flow N = friction factor of overland flow (A for average grass cover) S = average slope of overland flow Tc (gutter) = Length (ft.)Nelocity (ftjsec.)/60 8 = Bottom width of gutter or ditch Z1 = Inverse of cross slope one of ditch Z2 = Inverse of cross slope two of ditch d = depth of flow in gutter (estimate, check estimate with Row) Area = d*B+d^2Z(Zt +Z2) Wetted perimeter = B*d+(1/sin(atn(1/Z1))+1/sin(atn(1/Z2))) Hydraulic Radius = R = Area/Wetted Perimeter Velocity = 1.486/n*R ^ .667*s ^ 5 Flow = Velotily*Area n = OA16 for asphalt s = longitudinal slope of gutter 0 Double Areas 0.15 0.02 0.05 0.18 0.00 0.00 0.00 Total A 0.40 PC. 0.15 0.75 0.90 0.90 0.00 0.00 0.00 Comp *1[r 0.61 Q=C*I*A= 0.78 Q(est) = 0.77 A = 0417859 WP = 5.6283 R = 0.0742 V = 1.85 Tc(gu) = 2.93 Q(esi) = 0.77 Holding 11.58 BOWSTFING WTHOD MEN YEAR STOW DESIG14) PROJECT HIM EST N-6TH DETENTION BASIN DESIGN BASIN: . 58 RAM NL IISER OF ORYWELLS PROPOSED DATE: 1 1 Sngle (type A) 1 Double (type B) 1- 11[]®-3C3 Tatal Area (talc.) (see H1) 2.79 Time of Conc. (talc.) (see H1) 6.22 Composfte'C' (calo.) (see H1) 0 26 Time of C.onc (m[n) Area (Aces) 6.22 C Fa= 2187 impervious Area (sq, ft) 0 26 Volume Provided 8960 Outflow (cfs) 248 406 storm, 567 Area * C' Factor 1 3 0.72 Time Time Intensity Q dw. Vin V out Storage Inc. Inc. (min.) (sec.) on /Fr,) (cis) (cu. ft) (Cu, ft.) (cu ft) (#1*60) ' WC*#O) _ - (Outf -#2) (#6-#8) 6.22 37348 2 95 ' 2 12 y --1059 _ -v 485.53 574 5 300 318 2 28 917 390 527 10 600 2.24 161 1168 780 388 15 900 1,77 127 1304 1170 134 20 1200 1 45 1 04 1380 1560 -180 25 1500 1 21 0 87 1412 1950 --538 30 1800 1.04 035 1438 2340 -902 35 2100 091 0.65 1454 2730 -1276 40 2400 0 62 0 59 1487 3120 -1633 45 2700 0 74 0 53 1501 3510 -2009 50 3000 0.68 0 49 1526 3900 -2374 55 8300 0 64 0.46 1574 4290 -2716 60 3600 061 0 44 1631 4680 -3049 65 3900 0.60 0 43 1733 5070 -3337 70 4200 0.58 0.42 1801 5460 -3659 75 4500 0 56 0.40 1059 5850 -3991 80 4800 0 53 0.38 1873 6240 -4367 85 5100 0.52 0 37 t950 6630 -4680 90 5400 0.50 0 36 1903 7020 -5037 95 5700 0 49 0 35 2048 7410 -5362 100 6000 0.48 0 34 2110 7800 -5690 DRAINAGE POND CALC ULRIIONS Required grassy swale pond storage volume = Impervious Area X.5 In / 12 In /h. = DRYWELL REQUIREMENTS - 10 YEAR DESIGN STORM Maximum storage required by Bowstring = Number and type of Drywells Required = 373 du ft provided 406 cu. ft OKI 574 cu. ft provided 567 cu. ft "FaM i Single TIME OF CONCENTRATION (minutes) TO (overland) To (gutter) Ct = 015 I2 = 256 Z1 0 172 Li (A) = 260 Z2 = 38 N(A) = 0.4 B= 0 5(A) = 0.14 n = 01016 Tc (A) = 4 39 5 = d = 0 012 0 224 LI(B) = 0 Tc (gu) = 1 83 N(8) = 0 Tc(A+B) = 4 39 S(B) = 0 Tettot) = 6 22 Tc (B) = 00 intensity = 2 95 Tc (tolal) = Tc (overland) + Tc bAisr) Tc (oveian d) = Ct* (L1 * ISIS ^ 05) ^ 0.6) Ct=415 L1 = Length of Overland Flow N = frJction facto- of overland flow (4 for average glass cover) 5 = average slue of overland flow Tr: (gutter) = Length (ft )Nelocity (f ,/sec )/M B = Bottom width of guts or ditch Z1 = Inverse of cross slope one of ditch Z2 = Inverse of cross slope two of ditch d = deptth of flaw in gutter (estlmate, check estl mate with Flow) Area = d*B+d^ 2j2*(Z1 +Z2) Wetted perimeter = B*d+(1/stn(atn(1/Z1))+1/sin(atn(1/Z2))) Hydraulic Radus = R = Area/Wetted Penmeter Velocity = 1 486/n*R ^ ,6ff, * s ^.5 Flow = Veiocity*Area n = 0A16 for asphalt s = longitudinal slope of gutter OK~--sI #T- -MM AtCol 1 Double I Areas 2.37 0 07 0 14 021 0.00 0.00 O OD Total A 2.79 .C. 0 15 0 75 0 90 0.90 0.00 0 00 0 00 Camp 'C' 0.28 Q=C*I*A= 212 Q(est) = 211 A = 0907483 WP = 8.2944 R = 01094 V= 233 Tc(gu) = 1 83 Q(eso = 211 Holding = 912 PAK~ impson Engineers, Inc. 6& CIVIL ENGINEERS AND LAND SURVEYORS N. 909 Argonne Road • Spokane, WA 99212 (509) 926-1322 • Fax: 926-1323 TO: MAN PE S Pc u/j E7ivG nv Ee$LG SUBJECT: K,oGe►Ao►JT Es - S L*i A q>DmoN DAAj E sl*eer PLvj DATE: Se~Te~ 30 AvTT'v%C-44eQ Soft- o v eI • STD D u 0f T • Q S Ro ST CoUX ppapp c r-- Yo v Signed "bouG (ikP-ISTElisot~J INLET NUMBER 5B LENGTH 7.0 STATION 14+82.32 TOTAL PEAK DISCHARGE = 2.08 Q%) GUTTER SLOPE = 0.0120 FT/FT PAVEMENT CROSS SLOPE _ 0.0278 FT/FT SPREAD AT A SLOPE OF .012 (ft./ft.) AND 2.oe (cfs) IS 7.5o (ft. XXXXXXXXXX CURB INLET IN A SUMP XXXXXXXXXX P EFFEC. LENGTH (ft) = 9.70 H fft's = 0.580 DEPTH OF WATER (ft) = 0.21 SPREAD (ft) = 7.39 Press any key to continue INLET NUMBER 5A LENGTH 10.0 STATION 20+40 L TOTAL PEAK DISCHARGE = 0.79 Qf s ) GUTTER SLOPE = 0.0200 FT/FT PAVEMENT CROSS SLOPE ~ 0.0278 FT/FT SP'R'EAD W W/T SW SW/SX Eo r~ S° W SE 4.72 1.5 0.32 0.0278 1.0 0.64 1.0 0.0=6 0.063 XXXXXXXXXX CURB INLET ON A CONTINUOUS GRADE XXXXXXXXXX REDU I RED LENGTH (ft) = 10.5 EFFICIENCY= 1.00 LFS INTERCEPTED= 0.7e C:FS CARRYOVER= 0.00 Press any key to continue 6ampson Cngine¢rs, Inc. CIVIL ENGINEERS AND LAND SURVEYORS N. 909 Argonne Road • Spokane, WA 99212 (519) 926-1322 • Fax: 926-1323 TO: 61 L-L- HEMMIN GS P. 9. SP0 l~ COWTY SUBJECT: G uo~-~ Es7A7s s S DATE : AV Cm ev-_ S G- E- rbr-i-cwornj C, f s AS Me- Wu 0- Af o v, f Z C E7%,~ a se rat r.+ Pa~p `t 5 L. • - [N Fb o+J dN ep 2.5T2-b • AJDS FAD v r P G7 f SLOPE 0r P006 a-vo E . Bar' we- FEZ_ r SE'MbMr WtTHri.7 E7- Uw'- 15 AOCQVAI RECEIVED i 1993 Signed. I CkLE~M+-'~1 11-1 STOR.MWATER DRAINAGE REPORT for Ridgemont Estates North. - 5th Addition A 5-Lot subdivision located in the X W 1/4 of Section 25, T.25 N, R.44 E.W.M. Veradale, Washington 99037 for Tupper and Associates, Inc. September 27, 1993 Dort Prepared By: Simpson En gineefs, hic. North 909 Argonne Road Spokane, WA 99212 OPFICIAL PUBLIC DOCUMENT SPOKANE COUNn ENGINEER'S OFFICE NG PROJECT €I SUBMITTAL RETUFIN TO COUNTY 'ENGINEER EFL 'Auto 1~No STORMWATER DRAINAGE REPORT for Ridgemont Estates forth - 5th Addition TABLE OF CONTENTS Summary Table: Drainage Basins "208" Pond Volume Calculations Rational Formula Hydrology & Bowstring Calculations Capacities of Curb Opening Inlets Stopping; Sight Distance, 21st Court Intersection Sight Distance Analysis S.C.S. Soils Map and Description "208" Individual Lot Plans Supplementary Maps: t. Drainage Map for Ridgemont Estates North - 5th Addition 2. Street Plan-Profile, 21 st Court STORMWAT'ER DRAINAGE ANALYSIS for Ridgemornt Estates North - 5th Addition A 5-Lot subdivision located is the NW 114 of Section 25, T.75 N., R.44 E.W.N1 Veradale, Washington 99037 September 27, 1993 SUMMARY LE: DRAINAGE BASINS Basin Name SA 5B 5115 Total Area 17_320 121,390 -0" sq Pervious Area 6,42 103 420 g 1m rvious Arca i0,900 17,960 I # D'►va 's= Area 1= 1,00011 3= 3,000 +e # 1-{oases=Area 1= 000 3= 6 01>rJ n As halt Stre ets 7,900,/ 13,960 A. "208" Volume 3:30 we 374 cu.ft. Pond Floor Area 600 7013 f Pond Perimeter 1.10 04 lin.ft. Pond Vol 6" 350, 406 cu.i1. Pond Vol. 8" 491 567 cu.ft. Pond Name Location 5A V L-1, B-1 5B L-5, 13- l NOTES: 04. Driveways are assumed to be 1,000 sq. ft. of concrete per each lot, and houses are assumed to cover 2,000 sq. ft. per each lot. Portions of Lots 1, 2 and 3 have already been included in Drainage Basin 6 of R.E.North - 2nd Addition and Basin 3C of R.E. North - 3rd Addition, including houses on Lots 2 & 3 of this plat. Conversely, a large portion of Lots 1 & 2 of Ridgernont Estates No. 4 - 2nd Addition is included ua Basin 513 of this plat.. "208" POND VOLUME CALCULATIONS M GENERAL, for any drainage pond with 4:1 side slopes on all sides, the pond volume can be calculated with two components: the volume directly above the floor area plus the volume above the side slopes. Volume is calculated at 6" depth for "208" treatment and at 8" depth far storage, as follows: At 6" depth: Pond Volume = (0.5 ft. depth x pond floor area) + (112 x 0 5 x 2.0 x pond floor penmeter) = 0.5 A + 0.5 P At 8" depth: Pond Volume = (0,67 ft, depth x pond floor area) + (1/2 x 0.67 x 2.68 x pond floor perimeter) = 0.67A + 0.89P i O POND 5A: Pond Floor Area, A = 20 x 30 = 600 sq. ft. Pond Floor Perimeter, P = 100 LF ai. Volume at 6 depth = 0.5 A+ 0 5 P = 0.5 (600} 0, (100) = 300 + 50 350 cu ft Wooe Volume at 8" depth = 0 67A + 0.89P = 0.67(600) + 0.89 (100) = 402 + 89 = 491 cu. ft. POND 513: 2.68 feet _ ~~1> 5A Pond Floor Area, A = 11'4(7(14)21 + (11 x 14) + (16 x 25) = 708 sq. ft. Pond Floor Perimeter, P = 104 LF Volume at 6" depth = 0.5 A + 0.5 P = 0.5 (708) + 0.5 (104) =354+52 406 cu, ft Volume at 8" depth = 0.67A + 0.89P 5G FuaoK-R s 0.67(708) + 0.89(104) = 474 + 93 567 cu, ft. Pond Floor RATIONAL FDa IIUL(; 1°14'laR D's_L) G Y 1 E CF / 2 a / 9 DESIGNER I N 51 ) D 9 - PROJECT €•lAME = F:I DGE1"iONT ESTATES N01-6-1-1 .rTH ADD 9 TI DIA DESCR I F• T I ON a 1-01-:P?MATE-F,: DRAINAGE f U 011-12111E 1='C}I'!I 'SUBr RE.i'I _ - ~a ACRES SUBAREA 4 1 CJ 14 r,CREIS TOTAL I'', R EA D- ~ is'J'~EE DVE!-lk'LPjj",l D FLOW VALUES' L M . 1i L _ J L _ .i j r Z 7 - rr J, V/ .172 ? f_F o1. I°D . 156 SUBP REl; ? RLINUF F° C(J'•~ FFI C i L J Jf _ SUSHI-d-A I uIJC~I l~ C:UF F C° I C 1 L 1'•1 "il it R Cull UNUF° 1- LDEF I C 1! A T SUBrM-SEA RU1,4OFF COEFFICIENT C L3 r'11=' (:1 f=i l `I° ` f i LI 1~J r F~ C; IJ 1T i~ 1- i (w ,1 Ft I 1 °F . 14 1. 10 - 010 , n 1 'G Aft V~L 78 CIA - ! T . F ,.1 = i C)r JSj GFS "%f. OS'~T w ; covoo1v4*0 oD7*,$ C~S_7~i_lT R 11~1L L.r',LCL~f~O 1 rfN'S' J F,ry- i E - ~y /,+„'f / C DESI D . I-L U. GNER' 1 P i' Y4l is 1 ~~~E - 11-1 FR'OJE'CT INI M E = R' f Df3EL10NT Ei"1 ATE.E's NORTH 5 , 1 1 PiDD 11 1 00 DE;nCF I, F,I 10 N , 1"m w r EE=C ID RA 11\1AGE -10 ON -S 1 1 E FU N D 7L" t. ImterlsI'ty 0CA. V. Vii! lko u'1 3 o E,GJ ifi] I°i. 1 sE2 l Ln 7111' a {C_, 3 SL_.U . J ~CLL. . ~C=L4. Y f J. 0 %T 7E] 911 15. cr 1%+_10 1.77 .4--S 1e w7E.+ _ r 2400 .32 .2 5! i 1 -2c A 2700 . 7.4 . 1 L_3 ',5 6 3110 -1,124 J.J. a 7,70C) . 64 a 16 117-. 1 9r0 r:~ P}F;. 1 eW6 . 01 - d G c7 0 r a i` 0 15 i ~.D1 ~ 1 f'~_I ea: I 90 (D ~i l uo . 50 671 16S"0 -`i =1'? 100. c1 6000 .43 . 12. 71.5 1 8UcD _ 1 r~c3° THIS MAX F. PV_M S TCF',GF L;-`_] 1 . 9A r 1 <<r72 CkU . f- 1- w pOft Sr > S A Vod-LSmE cz DE- -M ~r The time o'f concen tration is 5 frlinu tps. The 1 jlis;levt l L7ped $ Low C7,A is i . 'F' a ==r. ] Ty pr= `p," DFy:iv EL.L TEN i'EiiR STORM CALC Y RATIONAL F0F;iyllal_i=) HYD '0L D13Y L~FSICNCfi = D.H.C. ~.~~1fE DATE 9/24/97. E ROjE CT NAME z FBI DSEMONT ESTATEIS) NORTH 5TH PIDD 1 f I41N :JESCR l F' 1" 1.01`J = d-ORMr^i°i CHR' DRI i I NAGE TO GlIA-SITE PONDS, i U D A R 1 1 = = 2. =74 AC R 11-S OVERLAND FLOW VALUES SIJ1 PiiI-tile. I RU1•lDR- Ci: E F I C I E1.11- r]L.9D ;RE AI 2 f:L,l ~Lll-f I t~ I- 1C117-1\1 I" ;SUDS 'SEA 4 :°:L11![=i f= COEFFICIENT UC1M1='os 1 fE I°ii 11+~~11 1 i..;iE I- I- 1 I~" I tIN-1 w N - . wF CHANNEL FLOW VALUES L_ 14• Z n 172 N i t; TD . ! si a z_ U l=-0111PUTL° D vAt i.iC S D U R 6.y 110 - 'w E9 Ul i - 2.08 2 0, 9 co fm &;r4erz-~ a6 Tit.S t . I', BOWSTRING CALCULATION~', BATE = 912419-' DES3 ' C: NE R = 17 . H - C^ e rsC T i~ -j- PROJECT iVANE = R 1 DS MONT i=STr i T ES NORTH - iTH ADDITI ON DESCRIPTION = CTUI {I°'lWA T'cl~ L)RiPr I N rGE -r o ON -SITE f° 01,]D1,3 t t Intl-:-riS.L t y C]dY'J. ")1I-) Vi. u~ ' -L[_a:-a (f7eiC) i i L--C- (11r..~lir [C. f. Z. . ) (C:Ll, CI:..) CLLk. If L. i (gilt. ri_. ) :a. C) 2.28 _f9() -`--a,5-,, .2 ' 74 r . 9 12 '1 . ~ I4]-i C7 4 rS6 554 1 1, 1 ti[_] b~. 24 1.61 1 169 r'i l} vi is 1',. 9C)n 1.77 1 '27 J ,7.)1r; 1 170 1= 1.,100 J 1 r,] 1 ?C 1 1 arms-} _ --179 W " 15 07 1 ~ i C) 1 #a00 1.04 . 75 1 -171 G, :4 ) -.S. l_1 2 1 L J . 91 . EJ J 14:~ •4 ~f.• I 1 !Y C. 411.. Z 0 Cj .74 c baJ Imp j1 ..'tea 10 0 w 00 .64 .416 I S74 4290 L` 0 . C 1 ?.(x[_14 i .61 . ^I 167- 1 'x a ',i_} ° _"i ]•F'-s' 6',j. 0 7-900 60 17 IV 421u 1 . a .42 1G )1 5-'16r4_) s7 s{y n 4 15 CD .56 00. 0 4000 . . ~•G 1 S74 ` ._~Iwl -r rL_- &,,5.0 r 510() .,:.7 ~7919:71 iv7P~1) ^IC~"9V 95. 0 IS 700 .49 . ::~5 0-19 7-110 _ i) 6 0 00 . 49 . ~ ",11 C) 3 147 6 THE MAXIMUM C T0R'C"ssGE:. I S :a;. . '25a ~ L• 6-7 CIJ. FT. -4- 11010 a 55 ' 8" s>C-P7H 7 Gu 5 6 . FT. >k The I i Ei]e Lr's CCT]4..raf-i ti-,ai 1 brl Ls 6. =ti•(_)2C, f-ill utu-,a. The L ndc vel opad +l ow out is I . c:. f . s. TYPE TYPE 1)FLIL IE .!_S n-ono •Irr ,%rCj r_1-rr s-nrvn rIAP r1 CAPACITIES OF CURB OPENING INLETS BASIN 5A: Ql 0 = 0.78 cfs to 10 LF curb opening to Fond 5A @ Station 20+40 of Sonora Street, in existing curb on continuous grade sloping downward to the north. Refer to Figure 16 of "Guidelines for Stormwater Management" L=10 ft, a= V y=0.156 ft. aly=0.08310.156=053 Qa1La = 0.077 cWLF La =10.1 LA.a = 10/10.1 = 0.99 Q/Qa = 1.0 Flow Intercepted = (10) (0.78) = 0.78 cfs Dk Flow Carryover = 0 c£s vell" Construct ]Oft. wide curb opening from Station 20+44 to 20+50, Right side of Sonora Street BASIN 5B: Q10 = 2.08 efs to 7 LF curb opening to Fond 5B at low point, FR 14+82.32, 21st Court Refer to Figure 17 of"Guudelines fbr Stormwater Management" H=4.223 h=0.5 HIh=0.22310.5=0.446 ft,/€t. Q/L = 0 33 cfs/LF @ Q10 = 2 08 cfs, L = 6.3 feet b lk . Construct 7 ft. wide curb waning from Station ER 14+82 32 to 14+89.32, Right side of21st Court. 7 F t 1 1 ti It C ~r k► 1 I A. z 85'0$° R ■ 2.0.04 , 1T • 18-w Q Igy 18 1 I 1L.= zs7z + $ Yt1 1 Building Setback r ' ti ~ ' nw.°fi+Eas E,4AWAW crresra A ~ ai 10' utility Easement -f J ryay I Cs 100.79 N roa~ + I S~f f ~ 215.00' I!] 1~4+44.32 J S89`2l~°22" E g ~ ~ c w U] os 6 100.00° C ~ _ Y" \ n % i 1 Q „ Utility Easement - Zd A 3'Y OXIVI.1tOr rA,1L1->i:'7WT - I -j r I I I Building Setback - IC 6,r b J A=; say 00° O e 5 3 R • 120.OC> vl T.IZO.bo ■ i J 1. b-Kr 1 N "5■ e 3 4-kA 5T. CIAC b A• SA* 13'2'7* K ■ 2.000 La.J T ■ to. Z4 2 CO 6. • 1B 93 rn o y 2 Z ®°9 55 50 ..-113.27 7.82'`' p 2s? ~3Y~ r 70b ' 32~? ' p3iw '113.27 C ? 03' ~ ILS_ o ~3- • irr ~ p7 ~ ' r CwFb rr.~~-- ' V ~ ❑ S'F~ 13~ Z7 CO / Pr) R '20 00 7 ; 14.24 L z 15.93 ~ p CO DIY ~ Cn C~ -STOPPJNL SIGHT D 15TAWGE roP- z1 :~T coVf7 Ass om I o,,~ S" NO-4 HEI 0 HT or C7 -1ECT e- L-Cw FQ+ NT = 0 ° E5 Fr. >7a..i~ 'C E`iC H1r1O1r 6 CISL i31"-Sacs = S 5 F-r. - - - - s - y- - - - ; _ - - - - ~ _ ~ - f r ~ 51CA H - - N E stin- Caron. - E ENT- - - - - . - *n - - eat - ■ - - _ tfP"E~C -T HT Fem . N :1~Rf R~5 H Cif CtY = 3 5 T , . Col _ mk in 10 - a I01 d I _ 0 inn Y i d 6 ~ a SIGHT DIS'T'ANCE ANALYSIS: 21st COURT For a car waiting to merge from. 21 st Court onto Sonora Street, we will make the following assumptions. 1. Driver's eye is 16 feet behind the gutterline of Sonora Street. In terms of street stationing, with the centerline of Sonora as station 14+44.32 of 21 st Court, the gutterline of Sonora crosses 21 st Court at station 14+62.32, thus the driver's eye is at station 14+78 2. Driver's eye assumed to be 3.5 feet above finished grade. At centerline station 14+78, the finished grade elevation is 29.88, thus the eye elevation is 29.88 + 3.5 = 33,38. 3. The centerline of 21 st Court is at Sondra Street station 19+57.56, so the driver of the merging vehicle is at about station 19+60 of Sonora Street, 34 feet right of centerline 4. Existing ground at the intersection is at elevation 2030, and slopes northward at about 2% to 3%- Thus, the natural ground is about 3' to 4" below the driver's eye at the intersection, and therefore does not obstruct the view of approaching traffic. 5. Sonora Street is designated as a local access road, with a design speed of 30 mph. SIGHT DISTANCE REQUMED to turn left onto Sonora Street across one lane of traffic and merge with traffic from the right (refer to graph on following ,page): Sight Distance to the left: about 310 feet (Graph B-1) Sight Distance to the right: about 375 feet (Graph B-2b) SIGHT DISTANCEREQULPED to turn right onto Sonora Street and merge with traffic from the left (refer to graph on following page): Sight Distance to the left: about 375 feet (Graph Cb) SIGHT DISTANCE AVAILABLE TO THE NORTH (Driver's right) Distance to see approaching vehicle: over 375 feet. (Refer to attached sketch) SIGHT DISTANCE AVAILABLE TO THE SOUTH (Driver's left). Distance to see approaching vehicle: over 375 feet (Refer to attached sketch) Conclusion: Sight Distances are adequate in either direction. Reference: AASHTO - "Geometric Design of Highways and Streets, intersection sight distance at an at-grade intersection. ?a f'5 ~a 5s 5D dt 5 ~s SIGHT D1SUNCE [OR P VIKILE 191ISSl1.G 2-1tl.E 'HICO A 1' F RDU S10P.15EE D;4CRAVY £-1- SIN] US'1 KE MR P a HI'6'i E 1 UR09C LEF I l+:I D 2-1sX1 FiIDWAY AURDSS P ►'iK E RAPTDLCHi!IC 1' RDij LIf 1. ISLE MGRNI E-1- ~ i c-►e+xr~ ditx'1 SIvHj D)SI LIJE C W P VI KIl l I URNI!4 kPpRDkc+ f4 tplow LW ASH D1E,ktml J3-2b- SINN a:5'11NCE f OR P VLH;CL E ID 1 URN 1 E F 11010 2-1 e,r.C KGH011 sm) s.1l tiF: E5/ Dr DE SiN SPEED W11HUA BEK OVLF%Itl:CN S1' t VEHICLE tPP17U404.116 FIRip Il RIVHI FEDJCI~:G SPIED MV DISIN SPEED 10 657 Df DISIDN SPICD. tSCt D.cCk1l~1 Cb- Sllp"ii1 D:SUNCE FOR P WH uL E 10 I URN FlINI W10 E/ of U'Sli,N: SPIED 2-LA.l:r H~Nw'R1' 10-0 i071.if: Ed ►ilii)U! b[l,X DAR1,01N ET t VLH•.L{ 1P -r'ULE} IQG [ Pbv 1 HE i 1: rl RE D'IC i.•'C SPIN 10 ELI br MS'..aP sri(D. D 2V1) AVID CDC) LDD ICbC) 12UC) 14 OD it 0C1 i rigure Jk-40. Intersecii©n sight di5tanee of at-gradp Iniviser-lion (Cage 111B and Case 1110). V D. to r E~ n n cr `s V e~`H l Ci- f5 APPP-OAM I t-JG FP M NJ o" PtS-AKCG: = 400 FT", J CWAtl"4E Fb o 5A 1 IJ 1r R•F Nae+b°L'~Aee. naa< a.av . to LG. a 1 I law6 PYrA A,feA•1 e ~ . I m I 1N tl o, I SO' Plewwl =its H 7DL~ ~ ( l k ■ ~r RefReRr erns, WRa aAIT ~ 4qY ~ { ~1 ~ R ~ ~ e a.a+»s. ee..sr ern hot ~ R, ru ~ - s u e ~ pW~nq i•,yocrs ewe e-a.. - Tyre A' 1 o Ce•rVs C~ om~, e - , • T° nub It I r N.h ae y L e t ,air ~a ~1u w~~' °n ~l F 5a9'2Q'2YE lJ ~ 'h~ •+3 W 6.S nn ~ r."'ws~ : ale zr rti, tnanr e~..rrwr~ r°, f- _ r; Ao- r. pale sa, of 5 .m. a T®O as PT. I I rasa - la I-0 Q ~I I +4 w H•~] RertPw.e } .a..a+raaTk+a ] E } 20 00' /f S 25 I I QRAPKC =AtC IN i1E" ff d / a ra so ~ 1 ~ i I oil( L J v~~rCc.- A-PPROACH IN Cl i=P-OM SOUTH SPOKANE COUNTY, WASHINGTON - SHEE NI (loins sheet 67) R 44 E R 45 E _ ,,r: Ir;! o.'"' r~f _ I`w p + r~'•:'.l~.y~'! w•' 4' `•.r,' A Hp :d ' i °s ~ i''s .I •[.t°E" , e.i. 'i! ~ l~I Y~ ~Ci'€tA.,~ ,t ~ r' ~ i- 's P ~•y 7~ •tR ".S;r k!° 7 • •'FYi"~ its {i:~',` ejd' tr~r ,5 1' I- ~~E' i= r 7, i=! .ST wuC 7~ I l a tel CHICA GO p ~+aF1, : tqt ii ~l4lr5 .k SF p it ;~~i Lhy]'•' it,:l rr 'ri l: i r' 7P' ! :iy': ti. 1 , ref.. t 'a, r r• + ,+{i ` A 1~ ' s. 'tfl%{'I3 ~:l, 4,4 .PP a~Al', • ~,Al,;i qtr f 1'~I, :°aaa , N .r ,r, I„1,• r, %S Cyi 4~ a I ` aI { - 5', b? 4 y; u 7r a I,•,;ne ~yN~ J.J f` ` ' II.5 1~ ~ )r"'i~ J~ 1~ ~t~h' ! 5 ~ '`bl ~ ~ I • ..M ql,:.,~•! rY''{;F ~i'r+ ♦L.il.. ti y~+qy ~f 5'# 66rrii`•~~ .,~1 '}~iY, r; ,i~"i, f• i~' Gn'jr3 GfrE! ckc M; r" `;g : ?F~,~.,• i. ;•'f r ` :r y I .I : w€rflt. S'cent«1 Vj1hey'. ~ Pep d'oA r ' ` "t S t ~ ~ , ,r, 4 ~f'~+ 1 ; r~C~{661 ~ 1 ,I = 1~`1 ids, Gm8' i~x.~• r1"•'a~,as; ~f Jf' I`;~i, ti 5,'GgFii f"_ s1 jCc H[9 1~~ a 3 °'he-.•:.; tk~ ~ ~ •.{'dF4.~ ~~9i~e'y''J"~{ rl,~ ~ i' 'f.}i, v Fi58 r •L€"! 1+t H,R ,,Y` tiG = rss ^ y 13 4;1 . f~s r~!, + y P A Y e• fins' s Laue `ass ! j~~ Y+~`~~~•`~',•-t: ~^:4p,.• •ry'~i~ i9' r FAQ ,IS, . _ .s N , 1 ° rC• :T i`y't_ ~r : 1"Z4 $1i8 -`'4 i.rx.. +.r„~ ',4,„€ ~•;,.i4L M •r: ,k. K•P - S• 'L P5A r '!i'!°'Y-t ",L 1.f r"'~`"• 1•• LJf;B'• va s ' : i'' r {t ' ' PLAT, ~k C e' + Yr - -,Y'• ~5:~ tir ,'rE, v G&A fB~•, ;f 18, . r', 262 2 g `I' t IifYA" • p PsB yE t 4 Cp 4b o l3d~ .4.• , - t IGG ~ ~ t t '~1 I ,li.r a' ~ r •~~-Ir 3 . ~ t L• ~ 1:`. 7 _ 1 9Y rF,'!i ' II. , ,y 'a. r Y.' " ~ 859 ~pv; ,l,•-,' i e I~ } E '4% r "apt : J`.T II rL:'`,.,~M1~ r'+• i711 rF G" r f. t CUB ~rf+ i -•p, Rlf 'l.r _ •,~y.,~„" if V. ~ : a r - y+ ~ ~iSyi ' iii ~k .S;S'~~. j 1. sti ~n;~+aw„-caaa, ~'4 ~rr.~~ ~L,E~ry+•, ::S ~y.~ ~ ~ ~ ' i = ~ ~Z ra' { !s r~:iYr Il• . ;r+ 3,";,b • y~ +ry •e rI `r L GHQ ,.i'I N~A ~ 1.~,#~'a -'`1.4'r s. a ' t Yi'~ :~•Y,'~'fy +afj .t n`q _ - Y-• r i.r;;<'~1'_~.: .~I;. :'r•. ` 1,; r.,, r, it er. • .,Y r. Rrrp _}i;+Y:=.'.., ^ Si.,'- Il ~ iTA'T,'4''•~IW~~ri,~ II •'i• , !(~'tir ~'~Y p- -i ria, _ 1 ~ :r ' u....r' Yyry L``i`'ll 2:•I! £17B • S _ r ,y:-. -a • .d a~ tn. Sif7{ r: a`y3r4.ae{}:.r~'' ee nY, ,r , ,6 u t.' r "J' V :1R "~•s A wM.~r FirF• :°Y~ r' • i! PsA ' Jai!(}~ i., F3pH r Y l iq8~(.,`+Y rl ~yd: t' _ J' i'IS , v~1_`•};` -v'°~ Jll a ~'p 5~}:,' C • r.'{I 'i . [ -It 1+• •'-~..~•'},/w~~ a _ rl~?Z f'' 1!'"d°, G R . .t~r AG H+eC $ sr • ~6 t NcA ,'.`•s~1', 1'r~~ ,r.*,y { a ` II Yti1, £ r n' ..,I y,. dS..h~k•+S '+fr ~.~'+~y:'L'•l~s~' ~'B~II ,~ff i +`S! ` Ggq fII{ f~~''"~1~''e'.'~Y,,~I,'}~ r+. PuB' Gtl1 vP r: All •'L I~.'M_r , f Rt,># r' 3 L ':T"y tI Sd li',1 `'.S - Al L • PsA J . f S • rrr GRAY ! McB 4' 1G !{•Y!j w' 'PIT -a=i ``•h IMCP,4 ii! ti` tS 1., I • ' PSB • ,,y~,++~ , 1-4 jGd^'>{~~:'k~~:~,r,.i _ Irby r•r+~4eYi=tay.'~' ~r "+'r` i8s9 •r6 f-u I Jiro 1, y _ u i L7 !gti Y, fhh1 i ll jr 5C .$s I 3 Ck0 sr £n8 # " 1 L4~+: Y~ p ah S'4 ? e,j rk ,u,: r ~`y~3~' $A T Y +C 4, 7 'FfnA ;~"s. .'1~. ,~tFi, '~~+;f r15i', .i ; ` I. ti :s; l •r.-, i r Y sc1~ _ f „ i;j He ~q; r Bab a. 4111'° fF UhB % ~+;~~L i ~jr.~"! J Nl~ t~ ,~F~ • ~~r ss4a'rl' t ..~y; . d e ~UC 9 ` "•f. -1 'Ygy+4_. `<•w "'+Ir ' „r aies~t.•L1it' ,V l` y'kdi. ~j; r ,~:L $a8 r r[, i. r . + 4 4 S pre ',i2f d •},et•,. i!{"S'1 ,~'%~r. A +Y .11'+11 r.. r,' { ~ .'h s ~ `i7-e ~Y3 .per' i ~ ~ 4'C r iU • r3S •t kf • l,s a l,. 'e K++{e s.'r v7 1., !i r _ rt. ' 11.1 sp~i, All Sr A` }6•.. +c .l9 :f (loins sheet 85) un° 04001 74 SOIL SUIWEY T a IILE (le4ci,i pt Eur(s of suds a ,,I t. Afup symbill DsC DsD DvD Dragoon btotiy silt loatu, U to 30 pereeut Slopeb. dragoon stony silt lob:n, 30 to 55 per- Cent slopeb. Dragoon very rocky complex, 20 to 55 lx:reent slolx~s. Description of boil and site SIlllliaL' to dr.Lgooll slit loans, U to ;SU percent A01)CS, CheepL shat Lllu bulf.l(.e layLl is bton)', dragoon part bimil,ir to DragU011 At lo,tltt, 0 to 3U IMeellt blolxa, WSCeln that (Iept11 to bud- rock range: from CU 10 :U IILLLLM. Ruck Ok,L- CluJ, Llielmded „n this Cu1111)1eY. lfedililll-t'ALurCd, well-dtunled boil foruled frum gl.MA Lill Lollt.tmlulg L l.i1t;C .1[ IUMLL Of ►'ul- Cumie :ell I„ LUe attrfaee layer, LLMIMAUL by gi•.lvel ,it depth of 3U to i,U IIIChem: OCCUpm-a ulldm111k.4 g, wuram,ehhu Lopugral,Ly. Cla -UiCacloa 1J~pll, fnnu a Llrl ate LZDA tcalurc EkB EIC EID Em Fa B FaB3 FaC3 Fm GaC3 Pg, GmB -GnB GpA GpB G pC GpD Etolka alit loam, 0 to 20 pereeut alopua. ] loikit very stony Silt loans, 0 to 30 per- eeltt slopes. DOLkit very ADDY At loath, 30 to 55 pereeut slopes. d mtdett silt loam. Freeman silt loans, 5 to 20 perCCUt Slopes. Freeman silt loans, 5 to 20 percent alullt:s, beveruly eroded. F reelmau bill loam, 20 to 30 percent Slopes, severely eroded. F'reb1L water nlarnlt, Garfield Silty Clay loans, 0 to 3(i percent aloll(:S, aCVL;Idy erOdUd. Garrison gravelly loam, 0 to 5 percent Slope.. Garrison gravelly loam, 5 to 20 percent alopea. Garrison vety gravelly loath, 0 to S pereeut SlopCa. Garrison very stony loam, 0 to 20 IxercelLL btol)Ca. Gicnrose Silt loans, 0 to 5 Per Lei I talopea, GIC111oae Silt loam, 5 to 20 pereelt alupea. G1CUroao Silt lount, 20 to 30 pereeut Slopes. C7lemroae silt loaml, 30 to 55 peee,t slopes. limnlar to Mika asst lo.mll, U to _'lJ l,ercU,1L blollGa, U2%UCpt that they Lre very atully 0iruuglium. \ledlunt-tCrtured, somewhat poorly llr.iil,ttl, aikaime soil formed LIL idluvltlul frol[t ealetr- CouS belt, ►•olc.uuc sal,, tiLd (II.L101Hte; dellth to Water tussle lltL(ttl,ltea fl`UIU JiLar tILt. SUrf.tU to about 6 feet. Very sleep, moderately nLli drai$Lt•zl Llpl:mLd boil, W101 ulediultt-teXtti red burf:tCC laytr surd nLedL- LtIn or tuod(:r.ttely Line te►ttired bul]bol1; fornwd fluid Slit uu rolLl,g Lu billy ull[.llld~. Slt.llloW, at►:lntlIly, itItL'rlltIIL01t pontla altd fr,uges itlouN lakes OULL ]Live .1 IltlCtLlMMg ►►'at,L-r table. Ei,gILLLelllt'g Liat.L In slot J'Well, as luu(1 type Ia LOU varl"ble. VCry ditp, ►►•Cll-(insisted au,l dL:►•(iuped in loc.aa ills ,ldgeLups ind knulla ol, Lilt; 10111,lg to Lilly' u1,LLIldn im the d'alolLDe boll .LIL-A. G ravelly, 111el11t,111-Ce1ltlletl, nomet►•leiL etCt_a- n1vely dra mud bolls furtuCtl ill gtavUlly glaCl.Il OaLwabl1 ,ILateri.ll from A L•,I,1L•ty of chill, iglseoua IMIJ-alt rock; ell LIL.,rly iU►el to Mud- eIAUly slopnlg tt rr.iCLb; delltll' to 1„i►tlu'u of Ntild, gravCI, and Lol,llleytoslea r.lsigea from 2.k, to 5 rect. Smmil.ir to Ca.Irlibol, gla►'Ulls• loan,,, except that the at,l ELCU layer in ►'VJ'y gl'a► Lily . Similar to Garllanll gl.ivrlly lo.llll, L:xCepL Lille OW btlif:LCU laf•L:l In ►•Cry alol,y. Very det•p, medium-tC%Lur,.d, ►►ell-drained sully formed ft•ulll LLLiLl igueLJUa 1;laClal till; aarfaCL layer 11111uctlcud by local aural ►•oleanle aall; un gUILtly rLJ1Lug to bLet•p uplands. 1", U to _4 ?d to -14 44 Lo a3 53 to t,0 Uto 26 26 to -It dL to t,0 u t u 22 12 to-, 2 U to A to _3 '_'3 to u0 Ulo 15 1,; so -14 44 to tiU 0to15 15 to 44 44 to uU 0 1. 72 Gravclla lu.em,_-._ V ry gr:1►,lly a.,ut 16411 L. Gr.1►L,I_-________ Z,lt lu.,l„________ l'L•ry ltltL a curtly lua a t. 3a11[ly CIAV lo.Llil-. 311t Sdty tla}• locau___ Silt)' L1.,% 1u.,ul_-- 71i1~ ~,1Ly Ll.ly 1o.snz__. GrLL►•Lll" luau, %'cry gr.-►L.liy 1C:.111 5.11141, gI.n► t•14 "ad CLII,I,l~zWlma. Very gra►cllr loin Very gr t► 4.11% lulu Saud, gr.L►ti, Iasi L•u WAL]WilCa I alit loamt-------- Curb Drop, 7" Deep x 10 LF Sto 20+40 to 20+50 18'RT onora Street, with Concrete Single Barrel ❑rywell.T e °A" with urb Inlet, Type 1, L-10' Metal Frame & Grate, Type No 3 Spokane County Standard Spokane County Standard, Sta.20+ 25 FFl Elev 20127.75 to 2027.57 25'Rt of 7L Sonora Street See Detail "A" Top of Grote 2027 00 l See Detail "A" Bottom of Pond Floor Elev 20126 50 Floor Area 600 sgft n~een~ See Detail "A „ 22 ~q0 ❑ro'r'a~e1 C)Q' + Q + 1 1 ~ 1 + ~ 33r ° +1~ 1+ I 0A 55 ~ ~ /If~+ 1 f'J `5 DAD 16.E * ~ Y 30' Budding etoock 3a' ~~tb S Q 10' Utility Easement Curb L"ne ❑ = 85'08'03° R = 20 00' S F 5 ro T 18 37 4- 14 L = 29 72' D~ WASfY~ X93 r~ F GRAPHIC SCALE (IN FEET) 967 0 10 20 40 SEPTEMBER 30, 1993 s~vtvAL'~- ~ 1" =20' a ~.~?T I B~f? K 1 Fxp'RFs 7113] 9 Sr 6SURPson Engineers, Inc RED+GEMDNT ESTATES NORTH 5TH ADDITION M 9179 ~N909 ASRG°`QF`IN E ROAR~v°RS ©A[) SPOKANE, WA 99212 Ph 92E-1322 E~# ~a vt PLAT v +0 Curb Line 1'Et'1 M Iy m fJl ~-m yr C> 0 w 0 1 X )CP v-A4:Y- w 0 ~a Ev ~ :s ~ m ro w _ y r~ a fp $ EI es qJ roc o n w co M M DJ Er1 . {u C4 tLa W Double Barrel Drywell,Type "8" with Bottom of Fond Metal Frome & Grote, Type No 3 Floor Elev 2028 00 Spokane County Standard, Sto 19+05 'Floor Area 708 sgft r- -A ; p 25'Rt of q Sonaro Street See Qetoil "A" a IE Ii n Ta of Grate ~ ~ ~ See Detail ,.A•• r ~'S~~ 'Tc ^ Cyl 7 L4 co y 0 CaC7p 'p G1 p 25 10' Utility Easement a ' 4®+ Yeav S#kw 4'1 i 4' d 6 C~~ . I f .r N k C]'r y 28'x33' Drainage Easement - ~ I 3Q low 1 30 Building Setback I a - - Z 00 iD PV ~ Y ~ 'X ! r' > fr O 2 W N n > r r*z 4- -n M M 0 0 6 0 C) 33 ` v3rc) cn 0 rAa to 0 I rn c c r a v.- O M 0 Kul (D O a m C 0 i tC O -N.1~ 00 tai v s 0 Un ID F47) 3 fi'~,'ru ra r~ ox N) y m g [I Q J x I co p v Oro II rL <A r UI Cc -n 0- C) LO 0 C,.i -AD 01 ID 0 '0 c n c_ " a I 1 ro I o I I I Q 7 '1-~-- i 1 30 r 145 00' ~ n SOO'39'38"W I II ri ~ I F~~ 6 imp-son Engineers, Inc. CIVIL ENGINEERS AND LAND SURVEYORS N. 909 Argonne Road - Spokane, WA 99212 (509) 926-1322 • Fax: 926-1323 .-Consrr'uz:u,....- Sas UC.. - agat...~. , t...L-.. _ . , and - shall be This ui shall ~theumaintena~nce of the -.rivate rn~►d ~ y~r k i t n and m n obligatlon to participate th e cluding in assign~ successors ~r ps prnvidecl ;+erein. r w1-1 ivide.r, a means of ingrdss an as shown ~~ereenr in on 1?.17(?[T1cnt 1C tl ~l1' _ AfdATf 0N OF COVI.Pr"ANT rivate road the 1 (:f d C'C~rehi~ for ' W,~ as , p , Lot 3 a nd Lot 9 of Rloc Y l and is subject t o the SepC ~ ri ff` C] by y;kr ~fr under Atiditors Document No. reference is made a part hereof. wI1Lifi are for the ~313rpoaE Cif latted and shown hereon, r a f riancaf f u as t t It}eta ~.}inur are Mng,' f p ~ r s, S ose o i n ag e easemen D ra and maintaining drainage age swales and drainage faci I i j.e.~ p e to and g reSr = eratin f i ~ all drainage g . op ny granted. The County of Spr~}:ane is hereby granted the right o The property cwner shall maintain - the drainage way. easements adjacent to the public right-of with optional stirunbery and/or trees, wn turf f l k))ich do not d b t a Swale with a permanent live cover o drainage water in the drainage Swale as t y e indica orm the flow and percolation of s obstruct - the approved plans. purchaser vi r or his representative shall inform each succeeding ilities f all-drai-wage, ' withirs said ac The property owne d his resi°ions.1bili.tY ~ for maintaining drainage easements on the property perty an n ld bu f [ lr era r rrr:.. ' l* r g i r7 m i i ll teEss a CF e n t S . Individual driveway access lfer.miis shall be requii.red prior to eso p approaches wa iv y e driveway approache s to the County road system. Dr (11P in the County Engineer's office. 1 f 1 F r n aCCL,r-d~1nce with the a j proved pl ein owl foot Wide drainage ponds as shown. on she dra i.na~ _ i ~1n on p• No access is allowed across the 9 with the County Engineer. 1xed my Seal thiFS hand and a tf dla`r of _ fl] 4+IT111FS5 WH,ERFuF, l have hereunto `_et our , sullivzin South Enterprises Tupper A<<saciat.qs Inc. .Y-e.~~ ~~°n49awry Pattnd~r ~ R_ J<PnCiF'tJ3 .+`I'irp~3F=r r3 President ?nt Kenneth J. Tupp y 7V e) P4 e, Pt,&r- LS e'rein plertted land 191r 4 -eq f°1 , 199 I FINAL PLAT 4 RIDGEMONT ESTATES N0.4 - 2nd ADDITION Q = 90'00 00° R = 20 00 T = 20 00' L = 31 42' a r• _ O] N ❑ CO r_ r.! 00 _ ° D o-< rv + <r ~s ❑ E %r n < 0 ❑ a 0 O 6 W p a V "D r77 U~ CV L- L to J E Chi ¢ a ~ cr M Z U7 0 Co o ❑ C rV 6 p3 :3 V) 03 Q) 0 E U W° li C O O 0 n ❑ x ~ ~ LL CJ C? C7 ~ Lr] r7 r S~ Cf~ v lD Curb Drop, 7" Deep x 7 LF U-J~L Sta ER 14+82 32 to 14+89 32 RT 21st Court, with Concrete Curia Inlet, f'ype ype 1. , L=7' 1' Spokane County Standard q opening 11+85 82 F L =2028 99 See Detail "A" - 88 00' t t' 100 00' Sinyle Barrel Drywell, 1 ype "A" with q foetal Frome & Grote, Type No 3 _q QL-- nk 5t r1 d St 14 93 _-Curia Line 10' p u y~ an ar , o -F' I 27'Rt of q 21st Court _ lop of Grate 2028 50 ~ I See Detail "A" i Y 25' 4 1 j- 30 Budding Setback rT--°---------~ I C I ~ l E E ~ Y ❑ I W ~ I p, I CS I C_ I ~ I p I I r''7 ! ~ I x I ~ I ~ I I Y E P Y I V 1 e3 i ~ I U1 i I I c r I ~ I m ~ I ca I I I z Y I 30' 0 N C7 N 1$' II 7' 1 10' AliEy Eas W E v3 ~y N c o LLJ 72 C3 120 00' N89'20'22"w NOVEMBER 22, 1993 ti 4 RCOOEM LOT 5 BLOCK 1 ESTATES NORTH 5TH ADDITION C7 co O r`7 Ln 0) r ~ a En GRAPHIC SCALE (IN FEET) 113 20 40 20- F -.4w 19.6 6& 171tPSon Engineers, Inc CIVIL E=NGINEERS & LAND SURVEYORS N909 ARGONNE ROAD SPOKANE WA 99712 PH 926-1322 11 ".208" POND . ►SE CTION DETAIL to LC La NOT TO SCALE l~ POND cot it BACK AND SIDES OF -20B- POND Q 0 TO BE HIGHER THAN PAVEMENT SIDE Y ~ o x f PLAN VIEW. POND ENTRY *%W~.ASPHALT~l. EDGE OF PA1~T. a VARIES, 3' MIN. VARIES 4' MIN. 3i -R-2 LL GRATE UNE P00 VoTN CRASS SO L~ VVV 4.IPoRTLAND CCWENT COraMTE a''~mLL 1 '208" POND FLOOR A `r rs ~3 V-2' MINIMUM OR AS SPECIFIED, ON PLANS 1~.[ a/1A as h RIDGEMONT ESTATES NORTH 5TH ADDITION SLOPE SOD TO TOP OF ORYViELL OWL fHGM FENS A LAa.a Sufl%f l075 H.909 -Rco"a4I RaaAa VrA^ d, WA Mil Pn 9:.•1377 I 1 6impson &ngineers, Inc. CIVIL ENGINEERS AND LAND SURVEYORS N. 919 Argonne Road . Spokane, WA 99212 (509) 926-1322 • Fax: 926-1323 sf S C) 1 A rV n 'E'l n <D tT IV --1` v OFFICE of THE COUNTY ENGINEER • Ronald C. Hormann, P.E., County Engineer Date: I Aee.A .14) 1994 A DIVISION of THE PUBLIC WORKS DEPARTMENT Dennis M. Scott, P.E., Director SUBJECT: eliosenawr em 7*7E-3 df o rt-m 6-to A oo mar-t Gentlemen: A review of the road and drainage plans for this project has been accomplished. Areas of concern to us are indicated in red on the attached plan set and calculations marked "ORIGINAL,". Please make the corrections and resubmit them to this office in order that the review process may proceed. When the plans are resubmitted, marls all changes on the remised print in color. Please note that the plan set and calculations marked "ORIGINAL' are official public documents, and must be returned with the revised plans and calculations. Review of the revised plans and calculations will not proceed until the "ORIGINAL" set is returned to the County. If you have any questions about this review, please contact us at 456-3600. Thank you. Very truly yours, encls: project file ,viewer (comments only) Ronald C Hormann, P. E. Spokane County Engineer William H. Hemmings, . E. Development Services Engineer/Manager .,,TCrway Ave. Spokane, WA 99260-0170 (509) 455-3600 PAX (509) 456-4715 TDD (549) 324-3166 A CONC . THRUST BLOCK 15 T1~1CK, 114 61~1DC'l1GC ~ D ~ ` ' PERIMETER , C-3 '4. 'w9 AMW 70 yryl a(4k'kg ; A ri3144+iJ[ MAX . ! Mr~1 'DP1,D6 _ alsf40, 12 THICK CONC. BLASE, QQQIIJTI~ ;p, EMBED CMP IN CONC . ~REC/1 0S=00100 jV2 ~ C~IP,~B"rC1 ~ESrJIGI~IR~ M H #11A r~ ENERGY 018SIPATOR'.., J6r ~ 7) N.T.S. r XkXO671196UO l3' II48it~1Ll lrtllQV 9 rim + Fcc v P4DfI140 WCL465 V {'6IRrCJ~?E~l`~ 11w "ff = ~n r~ / I E~It~UIL . rH~'G'llrCtILLY c~rJ . roux A W. SIP-GUr ~c~JrF~ ~rErac~v~ u~rm 3Lr 36" cmp 4!~Q o4 o rlo~~ C ~ CB #1._ - - f ANCHOR PIPS DRISCO N.T.S. FLOW RE shin ptirs J d d tn w F Z J W 6 4 f 3 0 u r, i FIGURE 4 4 41-E OVERFLOW STRUCTURE ROOF- H A+wr A466E v' BY ~r~~~,~Ca[$ e-, {2o SS 6ARS ioC4)v[P-(r&+C. 63, 9,5 A5 5~lowj]. elJ05 f f7Y~cFf.;+~d5 rYr [W1 °r~~ c.LnGtJ~~ La~E~' *-IJl3, L4Gf-1~ ;,.Ipogg ~5,Gp-s OWe4- 5EL-ow t- r 'Al-}l 0 i A • j+n,oT, - ~Yy~-EC1 (.C.."d,L Ott GYP- }SEE W7e 1 ~ 4ciaKcs-~r~S~ ~v~n1rY5NAf.~C7 5EE pErAiL_ ~LOca1 T'LAi,i VttVJ NO ~;6p,Lc 1 9 i 46° GC~r9 F' a C .1 d 0 ; a I L_ H06K r4 ? ,Jd SGe4Lc LOU.ER 51 5,rw' 7 "'12 rH(a- g 4`' YJI06 ~To F:~'t 0 I Rfa15oz f f I kfP6-: 2 G 741 e - e i J. L1rti: 1. t]rn~.~SlaN~ ,Fh2,E r.l~Cp{_t,Ai1cR~..t E.N 57;1 r - ? c ^cSCt Lh CK~. S]1l~ QS 5 , NS I S S Td I+M .]~P.Ir...t a L- . .y eP:.It A&- ~-J Avti%> O C, BS G t ~t s~ LrJL `a'v" L 157 . 6-b : of vz L1kj- a1 TeC.v X6, ew ~ -Y5 -tfw 3. 1R CCU f SL ~1~`Y a i i s Cr t CS ~x* ~ ti 7 . f+L 3 R ECt7a~mFl+3[ Ll pr 1 [tom C + E=m "4 "Lec 1j g4DP'--~yJm • (Pr- Z `TV-~ &A-5) c'J1iPL ~Y~CL L7~~7f~~c C~tL ~~b~ ( E)ir DILL 4 ;.4-8 i 11'9 i a n I Y t" Giiot LDM 17 -5 (00l~} MC t, WELDG JPPEK f DWER BANAL 2 4 3~~i Ix E it W~~~. ~t_G i tGf] - S P C7 K A, t~ E C C] LF N Y OFFZCE OF THE CcuNTY ENGINEER A DMS€ON OF THE PuBuc WOaxs DEPAR'rmM47 Ronald C. Hermann, P E., County Engineer Dennis M. Scott, P.E., Director Date: A,( (7 , vii IPS c L. 1 Gentlemen: A review of the road, drainage, and parking plans for the above-referenced plat, short plat, binding site plans and/or building permit has been accomplished. Areas of concern to us are indicated in red on the attached prints. Please make the corrections and resubmit thetas to this office in order that the review process may proceed. When the plans are resubmitted, mark all -changes on the revised print in color. If you have any questions about this review, please contact us at 456-3600. Thank you. Very truly yours, Ronald C Hermann, P. E. Spokane Coup Engineer William H. Hemmings, Development Services Eng klwlf\review.1tr W 1026 Broadway Ave. Spokane. WA 99260-0170 (509) 456-3600 FAY (509) 456-1715 3RD ADDITION j ~ R 100-06 T 4'153 L = 78 72! ' 30' DRAINAGE - , NIOTE: YHt5 PLAY REXQwFtES POND ENTRY r Cof 3TFWCTIpN of DITCH I~ To PLAT SOL11QD6 RY OF RUXleMONT ESTATr=s NlopTFi r 15M A'CL7STION Muft ~A = 1~°46'23 I ` Fi 185 OQ' I " 208" PO M LL. 0 y U 4 M LAS LLJ VARIES, 3' MIN 3'----------- J SLo , _ T = 2-5 G3 ! CONCRETE CURB INLET 4" PDRI = 50.93 TYPE I SPOKANE CO. STD. CEMENT PLAN VIEW: POND ENTRY i I~w ~ ASPHALT G x° a 3' "L"=2' MINIM EDGE OF PAVT. SPECIFIEE I - OR BACK OF CURB 1 Na re : If -Fenced, provio~e gate acros s a cce ss road F' f PKovFDE ERoSjo.F Prtcrmr_TjoN wkere eosemant5/dit~JcLtiEver^t corme-toge-hheY hand-pioce. G`or lar5er^ rock, min. 12.." sleep, Lrj over mir►. 154) 5Q FT. area, at ener9b d issi palor. Con-'Arm ektstimS dltcli skoLp8. pA.~ ' ,4PFi7QX. 113GA"rIPP.F ~ Ll ti/ ~ 12 Cu-' exisfarlp 15"r-mp, construct ei;req`j dlasipoetor. See ,2121 Court street plan- prof I 1-~' i o" Co TYPICAL SECTION: ,BITCH 1A ¢)f NO SCALE ' R /W 30 P 1 r5 15 Vi-fr-h Access Rood Crocske-e. Surfacim_q, Top CBUrse 2." Compacte i Dept'k (W. 51D.O.T. CS-Q RID G C&L I R DEPRESSION ~CUPZLINE ASPHAL-r or DEVELOPER'S A R L DATE OFFICIAL PUBLIC DOCUMENT SPOKANE COUNTY ENWNEEIR'-SQFFIQ I -MP of CURB OR PROJECT# SUBMITTAL `DER RETURN TO COUNTY ENGINEER Asphalt Concrete F Class '8", s Com: Asphalt Content i= (W.S.D.O.T. Spec.) 0'4 4 a SUBMITTAL CHECKLIST PROJECT # REVIEW # r. REVIEWER: B IL-L, ritA14S- DATE: 10 November 93 PROJECT: h'pG vnf Esmnz Alew 5-T4 AlPp+,7or4 PROJECT SPONSOR: e p6ti9r. TEL # L?128 c1q I PROJECT ENGINEER (Road & Drainage Plans) TEL # ~.`~!y r 3~- PROJECT SURVEYOR (Plat) 0:5 0,-1 ~r~rE STEL # 1-:2 G F tup. GENERAL ITEMS YES NO N/A 1. The $100.00 fee for plat review has been paid to Spokane County for this submittal J~ 2 . An agreement to pay fees has been submitted to Development Engineering services 3 Th . e fee agreement has been signed by the project owner or a principal of the developer's firm. If signed by an agent of the owner, written authorization from the owner is attached to the fee agreement 4. Review fee account is current (no invoices over 30 days outstanding) d4:c$. z5 igou~W 4/30/93 f-71t3 0% bap, 1113i1%3 5. I have noted the plans in, plans out dates on the pink sheet in the file 6 If th . e project is a mobile home park, were the plans reviewed by Planning? 7 i . 2 cop es of the plans were submitted 8 i . 2 cop es of the calculations were submitted 9. The plans are on 24" x 36" sheets GENERAL ITEMS (Cont'd ) L 10. The calculations are bound together ~ 11. The plans and calculations are stamped and signed by a Professional Engineer / 12. The developer has signed and approved the road and drainage plans 13 A . re there any conflicts between the drainfi ld proposed e s and any drainage ditches on the plat 14. Bowstring calculations by developer ar e in the file for this review. 15. Vertical curve stopping sight distance calculations by developer are in file for this review pro 50 fV4-V 15. Horizontal & vertical alignment sight distance calculations by developer are in file for this review 17. The engineer/ developer has provided evidence of coordination with the electric utility servicing the project The file contains a Spokane County Section Map The file contains a Spokane County Assessors's Map 18a. 18b. 18c. 18d. -Z- - The file contains an aerial photo of the proposed project area The file contains a corrected preliminary of the final plat map 19. The project is located in urban boundary area 20. The project is located in the Aquifer Sensitive Area 21. The project plan name matches the plat name 22. Is the entire project located outside of an identified Flood Plain Area? 23. Is the entire project located outside of an identified Stormwater Management Problem Area? ck11stv3.OfAUg93 2 IJ~b i Ict GENERAL ITEKS (cont'd) 24. List any design deviation requests and their status: ONE 25. Locate the Findings and order for the project and list any unusual conditions: %or 23. Backcheck of previous comments completed Z124. All previous comments adequately addressed ekllstv3.0/Auge3 3 FIELD REVIEW 1. Field investigation trip made on 2. Report completed and put into file on-1/117...-93 3. Are there any existing utilities on the project site? (Overhead power, fire hydrants, etc.) If yes, describe. rJLw u nU Tres ►42'E R G x tc ws'-AuLEb 4. Are the drainage basins on the ground the same as those that are presented in the drainage report? 5. Are there any drainage channels directed toward property? 6. Are there any drainage channels directing water through the property? ✓ 7. Do County roads cut off drainage as per drainage calculations? 8. If there are culverts under county roads, does the flow go away from o r toward the project? 9. What kind of ground cover exists? ~S ANd PRNIf-►r-- !GRfSS 10. Describe any existing channel conditions: rix a~ t!,a r QQN Yi5 I e i.Q 11. Describe channel cross section: 12. Existing Curb Type: t, N.1 4 cklletv3.0/Aug93 f ~ ROAD PLANS 1. List any roads that must be designed and constructed on the project. ROAD REQ'D WIDTH DESIGN MIN./MAX. STOPPING SIGHT MIN. CURVE NAME CLASS. PAVED R/W TERRAIN SPEED GRADE DISTANCE HORIZ. VERT. ~~=TGoMac La+~ ~e~.~c 50~ ~t- kr 50 0-6/6 200, +101 2. Planning conditions require submission of a landscape plan. (NOTE: Usually associated with PUD' s ) 3. I have checked the landscape plan against the road and storm drainage design and there are the following conflicts: 4. The following road plans have a bearing on the design of roads for this project and a copy is in the file: SoK a2A I have sent an "R" value and percolation test request to the Construction Section with soils information and a layout of the project. "R" value test request to Designer (date). cklistO.0/Augur 5 ROAD PLANS (cont'd) 6. Is the bench mark shown on the plans? d 7. Are stationing equations shown? 8. Is stationing correct (south to north, west to east, reading left to right on the plan)? 9. Are existing utilities shown on the plans (or an information copy of the utility plans submitted) ? 10. Are proposed utilities shown on the plans (or an 11 information copy of the utility plans submitted)? t "A fli ti tiliti shall be D th . e no e ny con c ng u es oes relocated prior to construction of roads or drainage facilities." appear on the plans? 12. STREET WIDENING 12a. Are curb design sheets provided for widening of existing streets? Y 12b. Does the curb design conform to Spokane County Standards of section cross slope (Between 2% and 12c. 4.5%)? Is there a street cross section shown for / widening existing streets? 12d. Does the proposed new width match the width required in the Findings and order? 12e. The crass-section shows: --LZ existing R/W b proposed RJW future setaside /12f t is w t t i t j h 1001 i . n.) pavemen aper n o pro ec s o n (m (1) There is adequate R/W for the taper to extend from the new paving width to existing pavement. (2) There is dnadequate R/W for the taper to extend from the new pawing width to existing pavement; taper extends from existing paving to R/W. 12g. Length of pavement taper out of project meets: WS2 = 60 for design speeds c 40 mph WS for design speeds a 45 mph ft. min. taper length approved by county Traffic Engineer 12h. Transition from end of curb to existing paving is shown (curb should nose down in 1211) 6 ck11stv3.01Aug93 !r ROAD PLANS ( cont' dl ) 712i. 12j. J./_ 12k. A 411-wide, white painted fogline at 12" from the edge of paving is indicated (tapers or tangents) Are the curb grades above the county minimum of 0.8%? If curb grades are below 0.8%, has a special note been added which requires a licensed land surveyor to verify that the curb forms are at the correct plan grade prior to construction? 13. NEW STREETS 13a. Does the proposed alignment meet Spokane County Standards? vertical slopes vertical curve length horizontal curve radius intersection separation 150' on local access 300' on arterials 13b. The plans show the typical cross section for streets 13C. Does the proposed street width match the Findings and order? 13d. The cross-section shows: existing R/W proposed R/W future setaside 13e. Does the typical section on the plans meet Spokane County Road Standards? cross slope is shown cross slope is within standards cross slope is correct when checked on profile 13f. Curb typei shown proper type for the road classification meets Spokane County Road Standards for curbs within the public right-of-way consistent with the curb type in the general area 13g. Are the curb grades above the county minimum of 0.8%? ckiistO.O/Augur 7 r ROAD PLANS (cont'd) 13h. Jl If curb grades are below 0.8%, has a special note been added which requires a licensed land surveyor to verify that the curb forms are at the correct plan grade prior to construction? 14. Has an "R" value test been performed for each soil group? th~Y£ dy Oak."" IN p 16Y& Pt*4'E 58E v/68,+At~ f1m.! r_ 46+ 14a. The pavement section is adequate for the R-value and Traffic Index for the road type 15. Locations where water is intended to flow through an inlet or curb cut are at the low point in vertical curve Z16. SIGNAGE PLAN 16a. Stop signs are shown for all streets which intersect an arterial (Check with County Traffic Engineer if there is a question) 16b. Street name signs :are shown at all intersecting streets 16c. Is there a need for barriers at the end of dead end streets? 16d. Is there a need for other special signing? (Check with the County Traffic Engineer) 17. Has the Fire District approved all proposed private road turnarounds that are substandard according to our Spokane County Road Standards? 18. CURB RETURNS 18a. Are BCR, MCR, and ECR stations/ elevations on curb returns shown on the plan? in the profile? 18b. Are the curb return elevations correct? 18c. Is there positive drainage from the road intersection to the MCR? 18d. Curb return radius meets County Standard minimum of 20' (to back of curb for rolled/wedge curbs, to face for vertical curb face types) 18e. BCR, MCR, and ECR elevations are set to allow drainage from the centerline to the curbline 8 cklistv3.0/Aug93 ROAD PLANS Z __X/ I/ ( G'ent' d) 18f. BCR, MCR, and ECR elevations are set so that the superelevation between the intersection and the curbline is banked properly for right-hand turns into and out of the intersection roads (the road slopes from the intersection down to the flowline) 18f. BCR, MCR, and ECR elevations at intersections without stop sign control are set so that the superelevation between the intersection and the curbline does not exceed: (ref. AASHTO) 10% (flat terrain) 8% (rolling terrain) 6% (mountainous terrain) 19. COL-DE-SACS 19a. The cul-de-sac grades (top of curb) meet county cul-de-sac standards (1% min.) 19b. The cul-de-sac curb is shown in profile 20. INTERSECTIONS 20a. Do the intersections meet the 2% grade requirements? 20b. Wheelchair ramps are provided at intersections with sidewalks 20c. If there is a change of direction at the wheelchair ramps, are the ramps oriented so that: a 5'x5' pad is provided at the top of the ramp? the required 5'x5' landing zone at the bottom of the ramp is located inside of a line drawn 1' inside a line extended between the curb faces of the adjoining street at intersections? any drainage structures are located outside of the landing zone? 20d. The intersection horizontal sight distance analysis shows that sight triangle encroachment on private property is 2' or less 21. Is there a need for slope: easements? ~I 22. Is there a need for erosion protection? 9 ckaistvM/Aug93 ROAD PLANS (cont'd) 23. DRIVEWAYS 23a. Can a driveway slope of 8% or less be maintained between the edge of pavement and the right-of- way? 23b. Can a driveway slope of 12% or less be maintained between the right-of-way and the building setback line? cklistv3.0/Aug93 10 f • Az" ckllstvM/Augur DRAINAGE PLANS 1. Has a plat map been submitted which shows lot dimensions, street widths, etc.? 2. Was a map with wo,"' contours spot elevations submitted to properly determine drainage basins? 3. Were all existing drainage courses shown? 4. Were all the proposed drainage courses shown? 5. Were Hydrologic calculations basin? (Bowstring if area 5 if area > 10 acres) Offsite (50-yr storm if storm if developed) Onsite (10-yr storm) Q for entire area Q for roads only submitted for each 10 acres, SCS TR-55 undeveloped, 10-yr INFILTRATION POND Actual pond volume provided DETENTION POND Release to pipe system: contain 50-yr developed release at 50-yr pre-developed secondary overflow to pipe in control structure for 100-yr developed emergency overflow weir for 100-yr developed sump prior to outlet to control structure 1' min. freeboard grassed sides/floor for publicly-maintained ponds sprinkler system for publicly-maintained ponds Retained on site, no drywell: contain 100-yr developed emergency overflow for 100-yr developed 208 SWALES 208 swale floor area, volume requirements 208 swale floor area provided 208 swale volume provided 11 DRAINAGE PLANS (coast"d) 7. 1. .3 void ratio for gravel free space volume is used 2. Perc rate from field test is used to develop outflow rate 3. 143-yr event volume is contained entirely underground _Z 5. 5a. b. _tole 8. UNDERGROUND GRAVEL GALLERIES 100-yr event volume is contained by a combination of underground storage and above ground storage up to 8" depth 100-yr event volume is contained by a combination of underground storage and above ground storage exceeding 8" depth soil mixture is specified for water depth in pond exceeding 6" Entire gallery is wrapped in filter fabric CONVEYANCE Conveyance - pipes ditches gutter flow depth is less than gutter height Backwater - pipes, ditches Headwater - culverts Curb drop/curb inlets on grade (fig 16), sump (fig 17) Grates - sump (fig 15), continuous grade (fig 15) Riprap - stone gradation, pad dimensions Soils type is "pre-approved" (Garrison, etc.,) for drywells without percolation tests noes the drainage report identify the SCS soil groups for the project area and for the proposed roads to be built in the project area? 9. The drainage design maintains sheet flow patterns in natural watercourses 10. The drainage design maintains existing sheet flow patterns without concentrating flows 12 cklistV3.01Avg93 DRAINAGE PLANS (cont' d) 11. Does the entire plat lie outside of designated 100-year Flood Plain Area? / ✓ 12. Does the entire plat lie outside of Zone "B" of the designated Flood Plain Area? 13. Is the max. street ponding in any part of a Zone "B" less than 117 14. Does the plat contain appropriate language limiting the lowermost opening in a structure located in a Zone "B" to not less than 1' above the lowest road elevation? / ✓ 15. The drainage concept is compatible with planning commission requirements. 16. The difference between present and future flows is retained on the site. INLETS h 1. The inlets shown are within the stream flow. v 2. Inlets are shown on the low side of a road or at the low point of a vertical curve 3. Curb type inlets are shown at sags and are properly sized. Perimeter does not include the side of the grate against the curb face (all grate types). Perimeter is divided by 2 for calculations where no curb opening (Type 1) is provided. Area = clear area - 2 for Type 1 grates) 4. There are no long curves with flat grades which pose a problem. 5. The centerline road stations, offsets, and invert elevations for all inlets are shown on: plans profile. Z 6. Grate type is shown on the plan and is acceptable. (Spokane County Standard inlets in county ROW, on private property other inlet type may be specified) (Type 1: D-2; Type 2: D-4) 7. A detail drawing of the grate/curb installation is shown on the plans and includes the 2" depression and transitions as per county standards for grates that are located within county ROW, or referenced to SCRS std. detail D-8 cklistvM/AugO 13 r DRAINAGE PLANS (cont'd) y~ 8. A curb cut detail is shown on the plans with the new county back drop with transitions and a 2" depression for curb cuts inside county ROW, or referenced to SCRS std. detail B-15 9. The plans shows acceptable curb cut details and grate details for installations which lie within private road easements. 10. If inlets are in a gravel road or a dirt ditch a 6' x 6' A.C. apron is shown around the inlet. 11. Catch basin or special manhole details are shown or a standard drawing is specified. Z 12. Critical low points in the drainage system have been provided with overflow easements. 208 SWALE SYSTEMS ✓ 1. Is the swale located outside a future set aside area? See Findings and order for where setasides are required. 2. The swale bottom and sides have sod or grass turf specified. 3. Swale side slopes do not exceed a 3:1 side slope. (A 2:1 side slope is allowed if swale depth is less than 12" deep. Should only be allowed where constrained by obstacles) 4. If depth of water from bottom to drywell rim is between 6 and 8 inches, soil mixture has been specified which meets Spokane County Guidelines. 5. Drywell is: located within 8 feet of the curb line, or ✓ a maintenance access route and easement are provided 6. Drywell stationing is staggered from the inlet by at least 4' 7. Multiple drywells are located more than 30' (center-center) apart cklistO.0/AugO 14 DRAINAGE PLANS (cont'd) 8. Soil type is appropriate for drywells (perc rate 72"/hr) if not: 8a. overflow from a swale at a low point will be directed away from building pads by an identified easement over improved ground ~C an existing natural drainage channel covered by an easement 9. Drywell location does not conflict with underground utilities. 10. Drywell type is specified. 11. Drywell grate type is specified (Type 3 -std. detail D-7) 12. Drywell grate elevation is: below the invert at the curb inlet between 6" and 8" above the swale floor elevation " 13. Does the note: Wrap the drywell with a filter fabric (Amoco 4545 or equivalent)" appear on the plans? / 14. Swale floor elevation is: specified between 6" and 8" below the drywell grate elevation " ' at least 6 below the normal gutter flowline at e~ the curb inlet for swale without a drywell " A at least 8 below the normal gutter flowline at the curb inlet for swale with a drywell 15. Swale floor dimensions are shown minimum area is shown the area matches the required area from the 208 calculation for impervious areas. 16. Easements for the 208: are shown on the drainage plans are shown on the subdivision plat ~Oe are of adequate size to contain at least 6" freeboard above the max. water surface elevation for the design storm at low points are tied to the lot corners. 17. The side of the swale that is the furthest distance from the street should have a top of swale elevation that is higher than the highest water level of the swale. cklistvM/AugO 1s DRAINAGE PLANS (cont'd) 18. The invert at the curb inlet is at or above the max. water surface elevation for the design storm ✓ ,L V/ _Z 19. Filter fabric is specified for the gravel envelope around the drywell is specified between the drywell and the gravel envelope installation specification is adequate. 20. Irrigation plan for County-maintained 208 swales Lot plans submitted on ~L 101, 208 LOT PLANS 1. Lot plans are required; submitted on 2. The 208 lot plans show: the lot number, block number, subdivision name, date drawn, scale, and north arrow. dimensions to lot corners drainage easements setback requirements swale floor elevation swale floor dimensions rim elevation if drywells are present curb cut station, offset, invert and length any drainage ditches shows depth from'the top of the curb an attached cross section of the swale or ditch 3. Lot plans have been stamped by a professional engineer on all pages 4. Lot plans are of sufficient scale to maximize the lot size to the 8 1/2" x 11" paper size. (Drawings may be on plain white paper) 5. 208 lot plans were approved on CULVERTS AND PIPE SYSTEMS 1. The road culverts are at the low points of stream flow. 1L 2. The headwater was calculated for culvert entrances and is under 2 diameters for culverts under 18" in diameter and 1.5 diameters for culverts greater than 18". 3. There is a minimum of 12" of cover for all culverts and storm sewer pipes cklistO.0/Aug93 16 J • •w7 • t r DRAINAGE PLANS (cont'd) 4. The designer has provided a letter from the pipe manufacturer certifying that the intended pipe is suitable for cover less than 3' (PVC), 2' (CMP, RCP), 1' (HDPE/ADS) or the engineer has provided trench details for upgraded pipe bedding for these areas 5. The minimum velocity within the pipe system is 4 feet per second at design flow in a backwater condition. (Note: The County Engineer may permit lower velocities) 6. The backwater calculations show a minimum freeboard of 0.75 feet for each catch basin or manhole. ✓ 7. The minimum culvert and pipe slope is 0.5% and all pipes meet or exceed this standard. 8. All angle points in the storm sewer system have suitable access such as a manhole for cleaning. 9. At locations where two different pipe sizes enter the same manhole the 0.8 diameter points of each pipe are at the same elevation. (Note: Exception allowed for drop manholes) 10. Is there any downsizing of pipes in a systems of pipes that are 18" in diameter and smaller. 11. There is a downsizing of pipes in the amount of 3" for a minimum of 100 feet in a pipe system that contains pipes that over 18" in diameter. 12. All pipes in the pipe system are 12" and larger as per Spokane County Standards; (10" pipe that is allowed for connection of inlets to catch basins or drywells, if the length does not exceed 44 LF and the velocity is at least 4 fps). 13. All storm sewer pipes are located a minimum of 5 feet from a rear or side property line and have adequate easements for maintenance. 14. Inlets on the same slope are located so that the maximum width of spread for the gutter flow does not exceed 6' (from curb face for Type "A" or "B", from back of curb for Type "R") 15. The plans and profiles show all culvert pipe types, stations, offsets, lengths, and inverts cklistO.0/Augur 17 DRAINAGE PLANS (cont'd 16. Pipe materials meet county standards for systems that lie within county ROW. (Note: The type of pipe in private systems may be as specified by the design engineer) 17. The culverts shown are properly stationed from centerline stationing. 18. Does the drainage system configuration avoid conflicts with underground utilities? 19. Is there a need for energy dissipation on any of the culvert outlets shown on the plans? 20. Is there a need for rip rap around the culvert outlet at any of the culverts as proposed on the drainage plans. 21. The rip rap that is shown for the drainage plans is adequate for the culverts where erosion is a concern and the engineer has submitted acceptable rip rap design calculations. J 22. Pipe anchors are shown for pipe grades greater than 15%. _S1 23. There are no instances where water is trapped against a fill with no culvert shown. 24. Profiles and cross sections are shown on the plans for all proposed channels and ditches. 25. Ditches with eroding velocities have a proper /26. lining for erosion protection. Water will properly flow from an existing or proposed ditch on to the pavement as proposed on the drainage plans. ,1/27. Where the ditch profile passes from cut to fill the flow has been properly disposed of. cklist O.0/Aug93 18 L EASEMENTS 1. Adequate drainage easements are shown for maintenance of drainage ditches or pipe systems. 2. There are easements proposed or existing for natural channels which cross the property. 3. An easement was provided where street drainage was diverted onto private property. 4. The perpetual maintenance of private systems has properly been provided for. 5. The maintenance of drainage systems within Spokane County ROW has been properly provided for. 6. Appropriate drainage language has been provided by the reviewing engineer to the surveyor and/or engineer who is involved with the platting work. 7. Pre-existing drainage easements on this parcel are not affected by this plat 8. Overflow easements are provided from swales/ponds located in low points MISCELLANEOUS 1. QC check of review completed (date) (init.) 2. Bond quantities for drainage item calculated (date) (init.) 3. Vertical curve sight distance worksheets done (date) (init.) 4. Vertical curve geometry worksheets done (date) (init.) 5. Drainage volume worksheets done (date) (init.) 6. Stamped road mylars to Permit Tech. (Sylvia/Suzanne) 7. Stamped lot plans to Admin. Asst. (Sandy) 8. A maintenance agreement has been submitted for County-maintained facilities cklietv3.0/Aug93 19 -1Curb Drop, 7" Deep x 10 LF Sto 20+40 to 20+50 18'RT t oncra Street, with Concrete urb Inlet, Type 1, L=10' okone County Standard F Elegy 2027 75 to 2027 57 Sete Detail "A" 1 Bottom of Pan' Sta. 20+20 to 20+50 26' to 46' Rt of ~ Son l Floor EIeV -07.5 5L3 l Fluor Area 600 sq f t See Detail "A" s~ is 1 A"7' , b~ t Single t3arrel Drywell,TyPe "A" with Metal Frame & Grote. Type No.3 Spokane County Standard, Sto 20+25 27'Rt of Sonoro Street Top of Grote 2027 00 See Detoil "A" o5ernen~ jorolnoc3e V, C) D 0 - loo , }1 1 1 ° 1 J> j p. l { 4 1 l!ti ~ } f eJ 4 1 } Q [j } I F I { >a. s 10 1 30' Building Setback 4 30_ - - - -_---__t_ 0 10' Utility Casement a 100 79' V" © = 85'08'03 R = 20 00' T = 18 37' L = 29.72' GRAPHIC SCALE (IN FEET) D 1D 20 1D OVEMBER 22, 1993 11 RIDGEMONT E Curb Line oa LOT L840CK-1 YTATES NORTH 5TH ADDITION 1" = 2.0' Vn ded 1949 CIVIL ENGINFERS A LAND SURVEYORS N909 ARGONNE ROAD SPDKME, WA 99212 PH 925-1377 v M r m M O 2 v v_ 0 z 1 1 S T_ Bottom of 7ond Double Barrel Drywell,Type "B" with Sto 14+72 to 14+97 PLAT Metal Frame & Grate, Type No 3 24'to 54' Rt Q 21st Court °o Spokane County Standard, Sta.19+05 Floor Elev. 2028.00 30'Rt of ~ Sonora Street Floor Area 708 sqft Curb Line To of Grate 2028.50 See Detail "A" See Detail "A" 112.00' _ _ Io z .O r < o ~ --1 co M tr ~Q ~ N r N n LO LO W J n ° r V ~czz 02-f2 gin cn a AVi A 'i ~ O Al 's z r z>~, o r"I z m S AO (Q ,.ON Y V,> .ZC7 to O c7 V M N O z CC) v, 1,3 N O O N O CN ~ G O 0 O = (7 N N C7 O > r M z M M M -4 0 125.00' 1 10' Utility Easement to 4 16' I \ I O c.,..I cNi+ N I I 1 0' Building Setback 32'x33' Drainage Easement, 30 1 ------------------------------------------r, a 33' I 1 I I r -;a> N rq)LpriNizin O O c O 0 D Q t (D D -O j 7 j 0 O p Y 5 c O ~On;`as > -0 + v + :3 £ co co`< M s " p Ln N~ N O o N 1 r' aj 9 x :n Q II ~ r° J O A ~l II o + r N P CO *i 00 00 00 N (o ~ O N N O O O N O O O J O 0 >11 6 A I I I I (n -i N I ICS ~U I _ _ cOD 00 IIp 0 7 `o I I 00~co l o cD ~ Ca o G~ I > N I`0 0 m C W J'j 00 - I NJn 0 Pa I a7 00 O O I C a O 1 a I ~ O a ~ a~ (D j ( > 1 Z U I ' _ ~ O O O Aw£ I x n + ? - I 10 I I I _ O ! 30' r I I = I I 145.00' i I 0 S00'39'38"W ! 1 3 18' C~ c O' r O 7 "208' " POND 0- SECTION BETAIL v NOT TO SCALE a BACK AND SIDES OF '208' POND y g ¢ TO DE HIGHER THAN PAVEMENT 510E a. z s POND ENTRY C3 a Q VARIES, 3' MIN, VARIES 4' MIN. 3ORYWELL GRATE UNC P00 WTH CRASS Sfld-n_ y r~ CONCRETE CURB INLET TYPE I SPOKANE CO. STa. r PORTLAND a CLEMENT ~C®NCRCTe ! DRrMIL 1 PLAN VIEW. POND ENTRY ' ~ASPHALT~ 'L'=2' MINIMUM OR AS EDGE OF PAYT. ~i SPECIFIED, ON PLANS OR BACK OF CURB DETA A RIDGEMONT ESTATES NORTH 5TH ADDITION 6yr gL 40 '208' POND FLOOR SLOPE SOD TO TOP OF DRYWELL OR MASTIC ANY EXPOSED JOINTS 0 ■.ww ~w irnpsun Engineers. lnc, ONL L"Olf(ERS & tAhO SuRVE7O15 N.909 AAc(>djJc ROAD 'MKAMtf, w■ 99212 An 9:f.-117 Triangular Channel Analysis & Design Open Channel - Uniform flaw Worksheet Name: Ri,dgemont North 5th Comment: ~hr - Area o . ~n Solve For Depth Given Input Data: Left Side Slope.. Right Side Slope. Manning's n...... Channel Slope.... Discharge........ Computed Results: Depth............ Velocity......... Flow Area.. Flow Top Width... Wetted Perimeter. Critical Depth... Critical Slope... Froude Number.... r 3.00:1 (H.V) 3.00:1 (H:V) 0.030 0.0700 ft/ft 6.55 cfs - FFont "~_e7.x-sir.] 0.62 ft ~T1--A 0F "ism KIG vnr-H = FT. 5.77 fps 1.14 sf 3.69 ft 3.59 ft 0.78 ft 0.0192 ft/ft 3.83 (flow is Supercritical) Open Channel Flow Module, Version 3.21 (c) 1990 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 4-12--94- Triangular Channel Analysis & Design Open Channel Uniform flow Worksheet Name: Ridgemont North 5th Comment : a om R . • r 5 t • d rs . Solve For Depth Given Input Data: Left Side Slope.. Right Side Slope. Manning's n...... Channel Slope.... Discharge........ Computed Results: Depth. ~1- Velocity......... Flow Area........ Flow Top Width... Wetted Perimeter. Critical Depth... Critical Slope... Froude Number.... 3.00:1 (H:V) 3.00:1 (H:V) 0.030 , 0.1200 ft/ft = [o 21.92 ofs 85, k'riuF--1 +-9z ?--2-1Assvrne (16NCUF~ PL-AK 0.87 f t D e?1)4 of ex PSn r•3G D rmR = 1.5 FT. 9.55 fps 2.30 sf 5.25 ft 5.53 ft 1.27 ft 0.0164 ft/ft 2.54 (flaw is Supercritical) Open Channel Flow Module, Version 3.21 (c) 1990 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 n e 1 i i f r Y P• r { RATIONAL FORMULA HYDROLOGY DATE = -1/ 12/94 DESIGNER D. H, C. mram. -lam1~ Uffini!~ PF:!3.': CCT NAME = R I DGEMONT ESTATES NORTH - 5TH ADDITION DE SCR J F' T l.ON = EXISTING FLOW FROM UI..D "PI DGEM ONT ESTATES" SUBAREA 1= 4.:2.14 ACRES SUBAREA 1 RUNOFF COEFFICIENT = .77 _ -[j7-,AREA = 15.228 ACJ-;EEC SUBAREA C RUNOFF COEFFIC.T.IENT . 15 I-OTAU (yi=:i=A - V31, 5,42 (.C'F;EC COMPOSITE RUNOFF COEFF I C I ENT = "C• 155-66,172-214 P-OW', VALUES Ct Y .1r L_ 1100 ()r,() L Y Z1 6 r. i = .172 Qcf "D = .3 DUR = 1 4. 67 1 J ~ .ti fl^. • I GA = 11.:, 1 CAPACITIES OF CURB OPENING INLETS BASIN 5A: Q10 = 0.78 cfs to 10 LF curb opening to Pond 5A @ Station 20+40 of Sonora Street, in existing curb on continuous grade sloping downward to the north. Refer to Figure 16 of "Guidelines for Stormwater Management" L=10 ft. a=1" y=0.156 ft. a/y = 0.083/0.156 = 0.53 Qa/La = 0.077 cfs/LF La = 10.1 L/La = 10/10.1 = 0.99 Q/Qa = 1.0 Flow Intercepted = (1.0) (0.78) = 0.78 cfs Flow Carryover = 0 cfs Construct 10 ft. wide curb opening from Station 20+40 to 20+50, Right side of Sonora Strom. BASIN 5B: Q10 = 2.08 cfs to 7 LF curb opening to Pond 5B at low point, ER 14+82.32, 21st Court. Refer to Figure 17 of "Guidelines fbr Stormwater Management" H=0.223 h=0.5 Q/L = 0.33 cfs/LF H/h = 0.223/0.5 = 0.446 ft./ft. @ Q10 = 2.08 cfs, L = 6.3 feet Construct 7 ft. wide curb opening from Station ER 14+82.32 to 14+89.32, Right side of 21st Court. 25 Curb Curb 1Z a 10.00 R 1 { At 85`08 b3 tLi T ■ to. T_4 { iR ■ xa.00 L ■ 58.93 '4 %0 17M 18.31 ~ 6 !'7 11313 {B ¢ { 1L s 79•-Iz a ~ a t r _ ■ } ` Building Setback 0 w a----------- o 1 d' Utility Eaeernent o a 100.79' 7.82' I ' * ~3r7i w M , w .yTO i•re 1B459.32 1 275.00 r-------;7~ 14+44.32~~ 3-0? i - v cap 8T20'2Z" E w ~a ► /('0 ?c: -'s t 100-00' 16.38' It- 3. zz' Utility Easement S ~ a •rj I +e"" S3' ~e wry N r r Building Setback U` curb CtLr6, abp v r"') 37 = v p0 Ir ~ ~ Rm* 4tv"rib.oa 5 0 'C P) T • VD. 24 3 1 -r ■ I To. 00 r"7 L c 56.93 13t.4z r b 4 tO I f J} N I 0 b SOD OD 0 w $T. V) ,STOPP't\Ae SiGH7 Dl,5 ANCE FOP 2197 <1oul?Y f15~ ► rTa►.15 : I V Q . 4 I7~ IV 's E`1= HE:TOWr 3 ~ CUL-10S-SAC = 3.S FT. _ r -I-- - - - - : TROEEL:E'L~Z1 - - w _ _ - - J- - = 1AJ - ~o - - - - - - _ - - - ' a{ a o r-- - T" J ItA -o~~ - - - -'fix s-tir►9 'Groin - 'i' :NT- - - ly _ - W177t► HET FaT r ° , 5 I - i - •h Nu - _ . - - r- SIGHT DISTANCE ANALYSIS: 21st COURT For a car waiting to merge from 21 st Court onto Sonora Street, we will make the following assumptions: 1. Driver's eye is 16 feet behind the gutterline of Sonora Street. In terms of street stationing, with the centerline of Sonora as station 14+44.32 of 21 st Court, the gutterline of Sonora crosses 2list Court at station 14+62.32, thus the driver's eye is at station 14+79- 2. Driver's eye assumed to be 3.5 feet above finished grade. At centerline station 14+78, the finished grade elevation is 29.88, thus the eye elevation is 29.88 + 3.5 = 33.38. 3. The centerline of 21 st Court, is at Sonora Street station 19+57.56, so the driver of the merging vehicle is at about station 19+60 of Sonora Street, 34 feet right of centerline. 4. Existing ground at the intersection is at elevation 2030, and slopes northward at abut 2% to 3%. Thus, the natural ground is about 3' to 4' below the driver's eye at the intersection, and therefore does not obstruct the view of approaching traffic. 5. Sonora Street is designated as a local access road, with a design speed of 30 mph. SIGHT DISTANCE REQUIRED to turn left onto Sonora Street across one lane of traffic and merge with traffic from the right (refer to graph on following page): Sight Distance to the left. about 310 feet (Graph B-1) Sight Distance to the right; about 375 feet (Graph B-2b) SIGHT DISTANCE REQUIRED to turn right onto Sonora Street and merge with traffic from the left (refer to graph on following page): Sight Distance to the left: about 375 feet (Graph Cb) SIGHT DISTANCE AVAILABLE TO THE NORTH (Driver's right) Distance to see approaching vehicle: over 375 feet. (Refer to attached sketch) SIGHT DISTANCE AVAILABLE TO THE SOUTH (Driver's left): Distance to see approaching vehicle: over 375 feet. (Refer to attached sketch) Conclusion: Sight Distances are adequate in either direction. Deference: AASHTO - "Geometric Design ofd-Iighways and Streets", intersection sight distance at an at-grade intersection- 10 65 60 55 so ~S ~S 30 ?S 7o O SIGH1 DIS1tNCE FOR P V[H;CLE CFDSSIN: 2-ltt-1 WGH► aY F ROu S1 DP, tSE[ D~~LRtu1 E-I- SINI D:S1 NCE FOR P VEHICLE 1URONC ltf 1 P:10 2-LLNE HGN►+'~Y ACCROSS P VEH.CLE OPFNIH!NG FFOv L[FL ISEE DURW 6-I-4! awe+nedlan SI;,H1 D1S1tNCC FOR P v[N,CLE lU'NNG LLFI A10 4441:[ HCH-t'41' ACCROSS P VMCLE t,PPROtCRI.'G HOW LEFL ISEE D:LGktul 8-2b- SI;,H1 DIS11wCE FOR P VLH;CLE 10 TURN LEFT I►:10 2-LIVE KGH►'RY AN) 01AN' ES/ OF DESIGg SPEED W11HD'J1 6ENG DVLRltl:Et: by t 1'[NICLE tPPFORCH!,:G FROv 7Hr RIGH1 REDULIt:G SPEED FFOU D[Slrt+ SPEED 10 65% of DESIUIN SPEED. ISEE D:t.GRtuI CD- Si-,,t4l D:S1 tI:CE FOR P V N'CL E 10 IURt: F:GN1 Ir:10 241J.'I k~Hvt1' t,t:O R11tR: ES% OF D[SIGi: SPEED 1i1riJiJ1 bEV:G 01'EF+1RI:iK Ey t 1'[H..LE 4FURO NI-1G fP.Ov u[ LEF1 R!:O f;[O'J~t' G fF::w fiiS~G!: t~((t1 10 Or DES'; N SCE(D. Figure IX-40. Intersection sight distance at at-grade Intersection (Case 11113 and Case IIIC). v Q. fv 1 r v; O C) R 1 n' b R o-' c s ~c ti L` z y M APO ~00 coo Elio .v..v 12.,., 50 S~GKT D!SI LNCC fr[Cl I vta1- (Icl.E A PP90A C441 NiG Fpo m p o" 1 DI SrA we = 4oo Fr, nKw M - COQ b R. Naen I.r,. LOLG.O b, O-...rue. O+1 Orr r W1 C"i~ w•.w..c ew.,..p'1. nrlr Lw mt+=1 w tox1U I q(~ l • O IY w~w.e o-..L) a.~~w.a6.aie mowQ..! lw. an i'Eo fa.1••ue. Cw Der. n tlitl .s i~a w• ~ CL ~ ==M 1 . o- A OM~uMC Pb,tD •50• ~-6 .,m1 I,s.• . 707 ae R. Le- O I I .PO 4(.l! M I 4' w 1•' t. ( tl tf bw f I twwM .a rw<< t [+w1.~rw J I 4P~'y I ' atiw+r Ctis•, J• n i ~I 1 ON. r.PAPMC SCALE (IN rMl) `L J~~ 2 vc)4tc E A-PPP.oACN1N C7 FPOM SOUTH p1 STAtJc--E = 4-0o f=-r, x-MMGIKJG VCMICLej Af I07MSF7--not 1 SPOKANE COUNTY, WASHINGTON - SHEET NU l _ (Joins sheet 67) _ R 44 E. I R 45 E. R 10 T••-j ' J11 rt ~.i,.r ~ll4 ,!,1 .~',~:.''•i,ui 11r'1',t''r '_r'~ G•gAI~~•rr. ~•y~,l PAC, •i;-~- 76 ; T••''• I .Yt r t' i 1 sT aA~l ► ' ,i i 'AltO 1 J - r~JI~'~' 41t nCNCAGO id,:l, ~NI:' SMIL GK68., ')r' ICI' t,i ~~~'~I~' :,,1!'.- •.itFy .~.i~,aln1+~iF i+• - st ! :;1, ''F, ,tl,'•d y'J"~ tI' i~ i,n r~,"j,~ ~r'i •:lli' - _ - FA. ~ _ •i~ t . ~:..1 ' ~,1 P}• 1~7 ~7, • sis. a ~ ' ` C l7 y Y _ r. I. •'tigA.'•1 ~''Z• 't ~1;.11n:~i`.1~1 'tl!'zi•~t '•S, 1~`~ t Z. i,' LutiC ~ - I'{.,...1 r 1 1 :.I.I~:.• it ri ,r•,tR Jn j P~1 i ~ , I . , ;;:,ks1. ,;1~lja; i:~'!' C,j'r; i.' t:~: 'fy!}'+~ ' I. 'CwC'ANC ~mEl ►~.t3i 1 r . `Central Valley' 24 j i 4 PeA voa School mB b It a t. ' 1 tr' i' I ! . . r1 sA t 40 G or ~,i.ir t• " j. l'.r ,..~I 1' f :1, yti~ IGgg~ G6A Cc HtB f! ~ r `'E~ ~ ,.ti~~LL{ 11 t4r ;'~'i"'p'' ' rl~~ v,.. Ms0 y r/.. J~,) -:~•r • ;C{ ,1%' 'IiNoJ':`'~ ,GrPB it 'Hsp ass t ib Bsb ~1 •J:^! '~h7~~,.~~ v a, Ya.r 1~' 1/~ 4 hB v t PSA L U VC T'El-r-~3 H' SXB ' ; : ` S'I ~{S~:! ~t• " , r j~P) L aB , I PsA Ijkrw cvB' { I . 4 t Jri~ 1 i ~ GgA •IB Qale •11 1 f', .+~t ! tB, d ( j:l. t f ( ` MhA' .r P5B l ; 'i'.~• rn M `rXB .l I~`r~ at r r fir: l , !'i;{ •,Q:,'•' . I L I GQA i~ 1 7 i i t e n.I.+-.! Ii 11 r+ 66 ~•e Gm8 `Z CUB i I % ICaiR EMI BsB ' , nFLI::Ir~ , ::>j. ; iy, .r. $uE L ,~t I t ! Il GCB' ;rP_':'~'°~° 'ra;•?jrtL~a'•••i,',.r I':r~ f~ .1~ a •~ti . 11' u,r ~rt4, :;u. ''~•S6 J •`!••-r•~,' .t frAq ti '}p', 11 I,GgA;t,;l•5' . ,s' , ~ ' .ey'II, y~.',y;}i~ l• r..•• ! •a ~ ~.~.11 II.td P .II ~~'?•1 f-c•(Mi no 1 f+~ p.! 1~ ~.g•r:ll ll~t~• fl~.t1' Cub ,.x..11... «r•:~a:...l~'.r~':~:ild' 1 G m B 1 ~ S-r,(. A• I n I t~!"!; .'_tt I PsA Bpa Y 1 0 JQA PC '1 Hv PS j{u K, Y; y ~ q ~ I'• I ,~••c: fin' •1 ~ . i'1•.+` ~i~ , i • 1.•:Y..1F} ~ i 1 t ' Il .'fy" ' ,(IC GlA I'll .t,~'{•~ :l•!J' '/.l?8711 , G Au! PUB '~li' ~~r~~ is•I a' ql U, ~;3~•,,'.1 t. c 1 PsA f r ,r •1_ 1`•' J. If1~ Y GRAY 1. MCB :1'~~.; .w Il• ~~,,-.Id♦ V ! '1 I 1 ~~j M#~~JI •f PIT / 1 :I.~ Pso ` t t1 8 H r 1 :U 1 I ~~~'~~VI,`' •r• r~ -(Iti;:i..;~•. SsC ~t~/.w` P• ab ~ - "il f CnB Asc HhA to t~ bab Kit 'l( U` f ' ''1 A' .t 4C`"', { ' ~~I ,~~(1{~•.,::' t• UhB •'I" Il "''XI r#', i~C , 7• l'1 til~' ~j t.., f n9 t ,.•4~ ,1 ! 4I .t' j 'ti° . 1 I , 1d j4 f ' ~Ssd :1S i y i.;.1 UbA i Do8 :I;f ~ 1.~ r; VJ~i 7~JF:•N!,~'~ r r,~~.27 +~p~~ BaB "(1•fl• , ~ • ..1 r, / •'y ~trfi: '•I!t,• ~ y • i„ti.}f. I :1! _ w 't ~f't ; t." r ~ l } ~ i .1 f ~ }Yc ^.7t►// ~ °.`I 1_r ~ ,t SO 'I' •Sr ( , ~ ~,fi • Cr +~..i.i..:a:~ ~ 7 ~ " 't . f h'• - - - E (Joins sheet 85) uno 74 SOIL SUItVliI' '1'atst.>; G.-Br•ieJ description s of suits and then Claslficutioa Depth 'lap Soil name Description of boil and bite (runt symbol surface USDA tcaturc " DsC Dragoon stony silt loam, 0 to 30 percent Similar to Dragoon silt loam, 0 to 30 percent slopes. Slopes, except that the surface layer is stony. DsD Dragoon stony silt loam, 30 to 55 per- cent slopes. DYD Dragoon very rocky complex, 20 to 55 Dragoon part similar to Dragoon silt loam, 0 to percent slopes. 3U percent slopes, except that depth to bed- rock rungi:s from 10 to 20 tincheb. Rock out- crup included Ili thi, complex. EkB 1:loika silt loam, 0 to 20 percent slopes. 'Medium-textured, well-drained soil formed front U to 24 Silt glacial till containing it large auatunt of vol- antic 11711 ilk the surface layer; underlain by 2-1 to •14 Gravelly loam gravel at depth of 30 to 611 inche,; occupies 44 to 53 Very gr,t\elly nand) undulating, ntorainehke topography. loam. 53 to GO Gra%vl_____---___.. EIC Floika very stony Silt loam, 0 to 30 per- Similar to liloika silt lawn, 0 to 20 percent,lopus, cent Slopes. except that they are very Tony throughout. EID Floika 'cry Stony silt loam, 30 to 55 percent Slopes. Em Eindent silt loam. 'tedium-textural, somewhat poorly drained, U to 2G Silt Iuuu1_ alkaline soil formed in alluvium from calcar- cous silt, volcanic ash, •und diatonite; depth 26 to 41 Very 61Ie zarttly to water table (luetuates from near the surface loaat. to about G feet. 41 to GO Sunth• clay loatu.-. FaB Freeman silt loam, 5 to 20 percent Very deep, moderately \%ell drained uphold soils U to 22 Silt loatu_ sloprs. with inedhim-tutored sarL•tce layer and uu:dl- Fa63 Freeutan silt loam, 5 to 20 percent nut or moderately fine textured sub,oil; formed 22 to 72 Silty clay loum___...I slopes, severely eroded. (ruin silt oil rolling to lolly uplands. FaC3 Fn:einau silt loam, 20 to 30 percent slopes, severely crotlcd. Fm Fresh water marsh. Shallow, seam )y, intermittent pond, ,and I fringes aroun( lakes that have a Ilueluating 1 Mater table. L•'ngineeiing data is not given, as land type is tau variable. GaC3 Garfield silty clay loam, 0 to 30 percent Very deep, well-droned soil developed in loc;s 0 to A Silty claY 10.1111 slopes, severely eroded. on IIdgetops and knobs oa the tolling to 11111). X to 23 Silty el.ny_--___-_-. uphold, ill the Palou,e soil area 23 to GO Silty clay lo.tm____-- Garrison gravelly loam, 0 to 5 percent Gravelly, niediuln-textured, someohat exec,- 0 to 15 Graven} loran-__-_.. • slopes. lively drained soils formal ill gravelly glacial 15 to 4.1 l erv gr.,\cll loam.. GOB Garrison gravelly loam, 5 to 20 percent Oattvash nnalerial from a variety of acid, 44 to GO y Santl, gravel, and Slopes. Igneous parent rock; on nearly le\ el to mud- cobbl"toucs. eralely sloping terrace,; depth to nnixutre of sand, gravel, and cobblc~toneb ranges from 2! to 5 feet. GmB Garrison \ciy gravelly loath, 0 to S Similar to Garrison grtvell). loath, except that 0 to 15 Very gravelly lo•.un. percent slopes. the surface layer is very gravelly. 15 to d4 Very grt%ell*• Io.un.. 44 to GI) S.und, gravel, and cobblestones. GnB Garrison very stony loam, 0 to 20 Similar to Carrion gr.nolly loam, except that percent slopes. the su•L•ace layer is very stony. GpA Clenroscsilt loam, 0 to 5 percent slopes. Very deep, medium-textured, well-drained soil, 0 to 72 Silt loann_________.. " GpB Glenro,e silt loam, 5 to 20 percent,lopcs. formed from acrd igueou, glacial till; ,urfacu GpC Glenrosc silt loam, 20 to 30 percent payer influenced by lot-,s and volcanic a,h; on slopes. gently rolling to steep uplands. GpD Glenrosc silt loam, 30 to 55 percent ,1 OPPY. S` ORM WATER DRAINAGE REPORT for Riidge o nt Estates North - Sth Addition A 5-Lot subdivision located in the NW 114 of Semon 25, T.25 N., X.44 E. W.M, Veradale, Waslungton 99037 for Tupper and Associates, Lnc. September 27, 1993 Lot Plans Reprised: November 22, 1993 _ DR'sMrmwa=' h I~ecalcuLated. A~`pril 1X94 Report Prepared By Simpson Engineers, Ine- North 949 Argonne Road Spokane, WA 99212 RECEIVED APR a 9 1994 SPOKANE COUNTY ENGINEER STORMWA"T'ER DRAINAGE REPOICf for Ridgemont Estates North - 5th Addition J'ABLE OF CON'1'EN'US * * Summary Table 1: fan-Site Drainage Basins k Sunurnary Fable 2: ~i~site ~ rainage ~ asins "208" Pond Volume Calculations Rational Formula Hydrology & Bowstring Calculations Capacities of Curb Opening Wets Stopping Sight Distance, 21st Court Intersection Sight Distance Analysis S. C. S. Soils Map and Description " - 2 , , ' la ~ ' Ukfsite Drainage ~ as s ~ ~ cu at'v~ns t'r ~€istin 17itch ~ S+E ~ rid t- e "208" Individual Lot Plans "208" Pond: Section Detail Supplementary Maps: 1. Drainage Map for Ridgemont Estates North - 5th Addition 2. Strut Flan-Profile, 21 st Court STORMWATER DRAINAGE ANALYSIS for Ridgemont Estates North - 5th Addition A 5-Lot subdivision located in the NW 1/4 of Section 25, T.25 N., R.44 E.W.M. Veradale, Washington 99037 September 27, 1993 SUMMARY TABLE: DRAINAGE BASINS Basin Name: SA 5B Units Total Area 17,320 121,380 .ft. Pervious Area 6,420 103,420 .ft. Impervious Area 10,900 17,960 ft. P D'wa s= Area 1= 1,000 3= 3,000 .ft. # Houses=Arcs 1= 2,000 3= 6,000 .ft. It Streets 7,900 8,960 -ft. "208" Volumc 330 374 cu.ft. Pond Floor Area 600 708 A. Pond Perimeter 100 104 lin.ft. Pond Vol. 6" 350 406 cu.ft. Pond Vol. 8" 491 567 cu.ft. Pond Name Location 5A L-1, B-1 5B L-5, B- I NOTES: Driveways are assumed to be 1,000 sq. ft. of concrete per each lot, and houses are assumed to cover 2,000 sq. ft. per each lot. Portions of Lots 1, 2 and 3 have already been included in Drainage Basin 6 of R.E.North - 2nd Addition and Basin 3C of R.E. North - 3rd Addition, including houses on Lots 2 & 3 of this plat. Conversely, a large portion of Lots l & 2 of Ridgemont Estates No. 4 - 2nd Addition is included in Basin 5B of this plat. Areas draining from the mostly-developed hillside SE of this plat. Basin flows merge at the existing catch basin near the uphill NE corner of Lot 3, and exit the plat via the existing ditch to the north Basin Name: Ren%1 Reno-2 Units Total Anna 497 240 851 60 .tt. Pervious Area 448,500 663,340 .fl. 1m ious Arca 48,740 187,920 .R. # Uwa = Area 10= 10,000 27= 27.000 .11. # Houscs=Area 11= 22,000 27= 54,(M .ti. A, halt Streets 16,740 106,920 .Il,. Flow enters plat Er. ditch from S. Ex 15" CMP Flow exits lat Ex. ditch to N. Ex ditch to N. NOTES: These two offsite basins include existing developed lots in "Ridgernont Estates" on the hillside to the SE of this plat, and a minor amount of undeveloped land further up the hill. Stormwater from these basins passes through the plat near the east end of Lot 3, and continues northward into the proposed "Ridgemont Estates North - 3rd Addition, to the north. See the drainage report and accompanying maps for 3rd Addition for the final disposal of stormwater from these two offsite basins. The area above/SE from Camine Court has been included in basin Renz-2, although most of the stormwater in this area is captured by the three inlets/drywells shown on the attached I" = 200' map of the offsite basins By ignoring the grate catchment, we are taking a conservative, worst-case approach to analysis of flow in the existing ditch exiting the 5th Addition. Each existing lot is assumed to be developed, with a concrete driveway and a house. Driveways are assumed to be 1,000 sq. ft. of concrete per each lot, and houses are assumed to cover 2,000 sq. R. per each lot. 11 "208" POND VOLUME CALCULATIONS IN GENERAL, for any drainage pond with 4:1 side slopes on all sides, the pond volume can be calculated with two components: the volume directly above the floor area plus the volume above the side slopes. Volume is calculated at 6" depth for "208" treatment and at 8" depth for storage, as follows: At 6" depth: Pond Volume = (0.5 ft. depth x pond floor area) + (1 /2 x 0.5 x 2.0 x pond floor perimeter) = 0.5 A+ 0.5 P At 8" depth: Pond Volume = (0.67 ft. depth x pond floor area) + (1/2 x 0.67 x 2.68 x pond floor perimeter) = 0.67A + 0.89P POND 5A: Pond Floor Area, A = 20 x 30 = 600 sq. ft. Pond Floor Perimeter, P = 100 LF Volume at 6" depth = 0.5 A + 0.5 P = 0.5 (600) + 0.5 (100) = 300 + 50 = 350 cu. ft. Volume at 8" depth = 0.67A + 0.89P = 0.67(600) + 0.89 (100) = 402 + 89 = 491 cu. ft. POND 56: I 2.68 feet 11 90 WND 5A zo Pond Floor Area, A = 1/4[x-(14)21 + (11 x 14) + (16 x 25) = 708 sq. ft. Pond Floor Perimeter, P = 104 LF Volume at 6" depth = 0.5 A + 0.5 P = 0.5 (708) + 0.5 (104) =354+52 Po rhD = 406 cu. ft. 5 e .v FLOOR- Volume at 8" depth = 0.67A + 0.89P = 0.67(708) + 0.89(104) 25 =474+93 = 567 cu. ft. Pond Floor RAI T ONAU FURMULA HYDROLOGY I E " ?/24/?::, DESI GNER = D.H.C. BASIN SA PROJECT NAME = R T D DEMON T ESTATE S NORTH 57H ADDITION )FSF_ R I PT I ON = 3TOE~"`iWA TER > A I NAI: E: TO ON-SITE: PONDS ;1-;r-+AREn 1 . .3474 ACRES, SUBAREA l RUNOFF COEFFICIENT = .15 WAREa - .020 ACRES SUBAREA 2 RUNOFF COEFFICIENT .75 BUBAP r i _ _ .046 ACRES, SUBAREA RUNOFF COEFFICIENT = . 9 442 yFtiEA 4- .3514 ACRE-3 SUBAREA 4 RUNOFF COEFFICIENT = .9 'F• F AL AREA _i7s ACRES COMPOSITE RUNOFF COEFFICIENT = .611420901071 )VE„f_,ar• u rLO VALUES c! . 1 L P a . •I 0 ".N EL FLOW VALUES L _ _ 71 - 6 L:. - 17 N 01 .011 .356 WFUTED VALUES, DUR = 5.00 110 = 3.16 010 = . 03 C^ , 77 _(.1>•,-,TFIh1L~ CALCULATIONS' 0DATE - 24 t~':" DESIGNEE U.H.C. BPIS1:N PROJECT MA.'`1" _ R I DGEMONT ESTATE,; NORTFI 5TH ADD 11.1 ON D :A I NAGE -ro ON-SITE PONDS t Ilitr:.1,~:i t.v C,.-1r_,•~. 1I n vo+_tt c~t_~ r ~~cl Orijr. (secc (in. F.s.) (CUt ft.) (CU. ft,) (CU. ft, ) !4 71 1.7 9-1 22 2 .:»r.:. 'cl4 1rq;:i ,._~r=i 1 . ;j . 4 - 4~3 270 11,13 ~C'ti TJ 461 101 1 itlt 1 s . _ . -.:J i}a._ 54 0 -15 7 :.x .111 506 r31t_j -.j0 4 .17 513 ? 0 C) 8) 5 ~r- : i r-I r'j ~.it 1 f'• 7 )'t_) -1759 , r, t_ir i 6 ri 1 r L31 1 1711 5BE 9 7 t_, .7 4 20C) 't 1 q. f i1; ] 2' i - -65:1 A, 4 14 10 -806 61. it=,ti -G76 r, 673. 160 • J. q 1 t i t 1. J t»i 71;b l.s;oo -1iiG5 P,i.If1 AI_I, a T,,,7 ,7 _ ~J. FT,'. ~ PamD S A voLuMe M 8 DE:Pn-1 e-v. F-r. I-: r' :I T~ G• ; • _r1 l".. h ^ 1" cd I- i 7 c; fTi 'I i t ~ 1 1. r,~.' C :3 _ _ ~ r - > TYPE ••A.. J~R`fvJEU... NATIONAL rOR MUI_ A HYDROLOGY 67E r 0/24/§ 7. DESIGNER - D.H.C. BASIN 59 F ROO ET T NAME F• J USENON T ESTATES NORTH - 5TH ADDITION ESC:R I P T ION = : i7RC1WATEF nRA t. Nr'IG TO ON-SITE POND S- -U h AR A j 2.37d f1C E 9 WL•{A ,EA 1 f';i..7Nl.JFI- COEFFICIENT : - .171 DRAREA 2 = .069 AC•RVF SUBAREA :_r RUNOFF COEF F T C I ENI .75 (IHil; F +^-i . ? 5P ACRES SUBAREA _ RUNOFF ^ CO'EFFTC LENT _ -i_A .706 A.n::_S SUBAREA 4 RUNOFF COEFFicumr .9 nTAL AREA - Z.797 ACRES UE.: 1 _ -r [.1 - , J = LW'. DUR 6. 7- Flo 2071 01 = 09 cnmr•OS' TE RUNOFF C:OE t= F" i C 1 ENT .237427141227 DA = . b UCAf!:_, P J NC-, CAl _CU{_AT I c€PJ I.C'NER T) F1 F: 41 1- J N 15 E~ ' i j L i 1`I'-,i"{ - 11 J rJ t_'C i 1t1{\{ 1 1._7! 7 ,-t I E', WrlRI I'I "T{-] AIDD I T L Lied -"SC „ 1.F T T1.11•{ t_ - F lixl r^iTf:f- m Il P1GF- fry 1 ff. 'OPdI) i I l t Ir,t r_ r,,: i L y C'cl;-' V-i n V u u t :Dt0!-<kg (m2 ri : e =C'C„) (7 n . {11'.) (C.:..+ s-,. ) (CL1. •f h.) (CL1. •ft. ) (CU Ft„ ) -1 IM /186 5 -1 t ..7 . '_7 <~t:'(7 I . r, ] 1 16 '%=1t 1 : k13'i ' ] 77 i , .1i' 17(71 1. 17(7 177 4 6. 5 41- 4 15 -117 L 11 El I .71 ,.;t7,t:; _':7(Ji7 „t ci ,•11tr l;:i:: ~''(7r7't i~1 I r 81 'r? i1,7 a ,l,0 , 37°i t:, .n,/1•i. 77 •'~Y r1 r'., I 7-7 ' _ _ •J "i '.'(1 r , 'tt I 'IIa LJ(1 T11_'i! .1 L71'~f,C_!__ ~.{J. r f. POND ! 5E, VoLVtitF @ 8 s7~~'-►ai = S G 7 c=u. FT. _1 it,-' 7Y t-~_~ .i_1 yS 1 7 :a lL'.. _'_1•: !T7l 1"ti l_I t+~c_> c?_ r_, 4 TYPE "A.. 4- PE B 1)F-1 ILP ELL - Am FClF'_%'1 ;(!l_A HYDr-,F)I_C3 ;Y DATE_ 4/12/')"4 D1= iTG F''RDJECT IV)MF = RIM-3EMON7 E=C'TC)'r FC D r"Jtr_."F; I F' T I ON 1. Y. 7' CT-I nlr; f-"[-Dl~~ FROM S, l_'Dnr:E1^1 ] = 7.IT ACRI L t7P0FIEA ^ - 1 rj. _ Fr_l-ll IF F;; - D.H.C. NORTH "'ITH OLD "RTDGEM f(Jr r=,RE0 1 ADD 7 T I CJI'•l DNT EE-rATEC" RUNOFF CDEFF T C T ENT RUNOFF COEF-F T C I Ei,!T .15 T: ITAL r^rl';EA = 7 t . (r( E'! ? COMP OS T TE RUNOFI= CDl-='FF 1. C_ T EI JT = -~c t ~ )67 %r r--i-c m VALL!ES C' - _ . I C, J I F ` "J 'S i_ 700 Y J-d - Q7 B f1 t)/ TD .f];J nl:r, Iz1.lr; 50 ' i °7 G'A - ca . ~ja OFFICE OF THE COUNTY ENGINEER SPOKANE COUNTY, WASHINGTON TO: Jeff Forrey, Department of Buildings FROM: Bill Hemmings DATE: Tune 2, 1994 SUBJECT: B.C.C. resolution # 91-0852 Implementation Attached are the individual lot plans for each lot containing a swale in RIDGEMONT EST NORTH 5TH ADD,plat# P 1684D. Please give the appropriate lot plan to the individual applying for a building permit on the lot, so they can draw their house and approach to scale on the lot. We will need this plan, and the corresponding $1000.00 cash surety, in the form of cash, letter of credit, or savings assignment, before we can issue the approach permit. Also attached are the letter of credit and savings assignment forms. If you desire, we can meet to further discuss this new process. 3 k~Wssign.208 "SAMPLE LETTER OF CREDIT" " (USE BANK LETTERHEAD) " (BANK NAME ADDRESS ZIP CODE PHONE # AND OTHER INFORMATION) IRREVOCABLE LETTER OF CREDIT AMOUNT: 1,000.00 NO. BENEFICIARY: SPOKANE COUNTY ENGINEERS 1026 W BROADWAY SPOKANE, WA 99260-0170 SUBJECT: LOT BLOCK RIDGEMONT EST NORTH 5TH ADD (Plat) PLAT # P 1684D . (Development) Gentlemen: We hereby authorize our irrevocable Letter of Credit in your favor, and authorize you to draw on the a draft up to one thousand (Dollars) ($1,000.00), for the account of (bank)' (developer). The draft, drawn under this Letter of Credit, covers the assurance of completion of installation of storm drainage, drainage swales; sod and other work as is incidental and related thereto in accordance with the drawings and specifications as submitted to and approved by the Spokane County Engineer's Office on (date), and is to be accompanied by the following documents: written request by Spokane County Engineer's Office to at the above address indicating non-completion of all or any of the above improvements and that amount of money (bank), required to complete such improvements. We hereby agree with the drawer, endorser and bona fide holder of this draft, negotiated under and in compliance with the terms of this credit, that said draft shall be duly honored upon presentation at the at any time before completion of the above-described improvements or performance, in which event written notice shall be given by Spokane County to the bank. shall be responsible for any cost incurred b the coup (developer) y ty 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) Credit No. Dated Bank Name: By: k~~assign.208 (authorized signor) "AGREEMENT" In consideration of the issuance of a building permit for Lot Block RIDGEMONT EST NORTH 5TH ADD (plat) plat # P 1584D (Developer) has deposited $1,000.00 with Spokane County as security for full and faithful performance by Developer respecting certain drainage facilities and sod in accordance with the drawings and specifications as submitted to and approved by the Spokane County Engineers Office on (date) 199 Developer hereby agrees that should such drainage facilities and sod not be constructed in accordance with the approved drawings within six months of occupancy, Spokane County may then use the security to bring these facilities and sod into conformance therewith. Developer shall be responsible for any costs incurred by the county in excess of the amount of security. Spokane County agrees to return to Developer any unused funds upon satisfactory completion of these facilities and sad, NAME & ADDRESS TO BE RETURNED TO; (Developer Signature) DATE k' V\assign.208 - (Curb Drop, 7" Deep x 10 LF \ Slo. 20+40 to 20+50 18'RT Sonora Street, with Concrete Single Barrel Drywe11,7ype "A" with ~FUrb Inlet, Type 1, L=10' Metal Frame & Grate. Type No.3 \ okone County Standard Spokane County Standard, Sto.20+25 F~ Elev. 2027.75 to 2027 57 27'Rt of CL Sonora Street i See Detail "A" Top of Grote 2027.00 \ 1 See Detail "A" 1 Bottom of Pond Sta. 20+20 to 20+50 26' to 46' Rt of ~ Sonar Eoseme~~ Floor Elev .50 1 Floor Area 6006 gift 25 X40' Orp%na913cJ QO 1 See Detail "A" N~ 6.52, 01 1 1 1 11 0, 120 4 1 11 ~ 1 C: 1 1 rp t 1 1 G, 1 1 9- v~ W 1 P. 1 O Z U. 1 D 1 Cz 1 1 to O 00 1 1 1 1 1 4 j O rro ~C O ~ 11 11 O V) co n_ 1 i 1 7 I IL5 1 I 18' N 10' I i 30' Building Setback 30'------- - CY) c~ o 10' Utility Easement o 100.79 Curb Line D = 85'08'03" R = 2000' T = 18 37' ~i T3~~F CO L = 29 72• r a f94"~,, GRAPHIC SCALE (IN FEET) 9967 0 10 20 .10 kECf~.R~Q t~ IOVEMBER 22, 1993 S/ONAL 1 1°=20' c3 L *:PIRES 71171 9 s LOT LOCK - r-.d.d 1946 RIDGEMONT E ATES NORTH 5TH ADDITION GV1L ENGINEERS k LAND SURVEYORS N909 ARGONNE ROAD SPOKANE, WA 99212 PH 926-1322 v 0 - M O M Vf --I a M CA 0 x 1n V l~ O~J ~L L r PLAT `J r --4 r+ ca r- 0 A Z O m M X N N W yA 9i~ N O O O J~ S _ m z g C) fpm H w A N ' Nz, Z>~• o N M Z m' O ~AV co „otn rn0A to C 0 N N .11 to O 0 - 'D o S C7 N n O > r M z M M 0 Curb Line Bottom of 7ond Double Barrel Drywell,Type "B" with Sta. 14+72 to 14+97 Metal Frame & Grate, Type No.3 24'to 54' Rt. 21st Court 00 Spokane County Standard, Sta 19+05 Floor Elev. 2028.00 30'Rt of q Sonora Street Floor Area 708 sgft D To of Grate 2028.50 See Detcil "A•• See Detail "A' u u ,I ,1 (.rNN(J J 112 00' o i; ~ oO ` 125.00' + w 10' Utility Easement to ' , ~ 4 16 4 7 w O N ~ 'lNJ~ I 32'x33' Drainage Easement 30' Building, Setback I o 14 30' I 33 I I I T 1 1 1 1 N K 0 0 Ala ( 3 I j Go a, , (z i o ~ 00 3:4 > 0 Nj CJi . I N to i2° O 1 W O N 1 O Co 0 (n o I I a) Na O W ~ 0 C a Io ~ 3 a~ m I m > : I ~ N N Z _ Q O 0 I 0 A C 4;:L: 1 Ito i w 10' 7' I o 1 30' I I I X. i 145.00' i N S00'39'38"W (4 r;7) V1(7NLO lC7 ' 0 v 0 0 0 a N D i Y 7 a '0 ° 0 0 ~M o~ O o c ^o C ~c n. ~L ~-9 -0 ? C J F ca : j 7. t co`< 0 =r T W0 Ln(,~~NCD CO N 3 O x j r alI0 - , i r0 v;D Q. 0 + N LO O CO N to O 18' C7 G a r 208 POND : SECTION DETAIL "208" POND : SECTION DETAIL M ~ NOT TO SCALE 0 Y U Q BACK AND SIDES OF '208' POND y 0 0 TO BE HIGHER THAN PAVEMENT SIDE W ~ O z 2 POND ENTRY a a a. (L VARIES. 3' MIN. - VARIES 4' MIN. 1r 3DRYWELL GRATE UNE POtID WITH CRASS SOD CONCREYE CURB INLET . 4_ PORTLAND TYPE I SPOKANE CO. STD. CLMU+T CONCRETE j DRYKQL % PLAN VIEW: POND ENTRY '*40'-ASPHALT".... EDGE OF PAV'T. OR BACK OF CURB J' ."L'-2' MINIMUM OR AS SPECIFIED, ON PLANS DET.AIL " " A SLOPE SOD TO TOP OF DRYWELL OR MASTIC ANY EXPOSED JOINTS '208' POND FLOOR Wvs .,,~,O* ~ ~S~4, i 9967 TONAL EXPIRES 71171 9S RIDGEMONT ESTATES NORTH 5TH ADDITION impson Engineers, Inc. CIVIL ENCir1EENS k LINO SURVET0.7S N.g09 ARC0>4l1E ROAO SPNA11(• WA 99117 Pn 926-1377 _S _I~ C] T< R r-7 E y PLANNINI G DEPARTMENT MEMORANDUM TO: Division of Engineering and Roads Division of Utilities Department of Buildings Spokane County Health District Fire Protection District No. 1 C] U N 'C Y WALI_I5 D HUBBAMD, I]IRECTOR ? I (:,6A 'D Vega Water and Power FROM: Thomas Vel°ic, Planner I 9 MATE: September 3, 1993 SUBJECT: Review of Final Plat PE-1684-92 RI©CEMONT ESTATES NORTH 5TH Enclosed find copies of the above referenced final plat. Please review and forward any comments by September 17, 1993. If you have any questions you may contact Thomas Vel jic at 456-2205. Thank you. sam Enclosure c: Ken Tupper, 12929 East Sprague Avenue, Spokane, WA 99216 COVED SEP Q 3 199'3 SIOKAW C0YAFry jV(;11V,, WEsr 1026 BRoADwAY AVENuE • SPOKANE, WASHINGTON 99260-0240 • (509) 456-2205 y ~ S 4s LJ r%T "r Y pFmcE of THE Cotes ENGINM A DM ION of THE Pusuc WORKS DEPARTMENT Dennis Nt. Scott, P.E.. Director Ronald C: H6rsnann, P.E., County En&eer TYE AGR ENS' PRIORI ENGINEER'S AGREEMENT NUMBER r/ This agreement between Spokane County and n whose interest in the project is ,c am n s.1 . 190 This agreement is applicable to the is entered into this day of known as: {'C t Dc, EnN 6 N -r E SAC A"' E~S # That the individuals and parties project agree to the fallowing: 1. 2. F -(:3V, A 1%T $ a named herein as having an interest in the above described property or They request that priority review be given to their project. ified in They agree to reimburse Spokane County for ~ project c attachment evie feesG, FLS l ended. Board of County Commissioner's Resolution 8The fees will be based on double-tune cost i c and will be Spokane monthly as accrued. reviews plus ten percent administrative charge, 3, The undersigned agrees that these fees are due and payable upon receipt of the billing as specified above. The monthly billing should be sent to the anent NAME: ADDRESS: CITY, STATE: ZIP CODE: PHONE 6 I understand that failure to pay these fees may result i lay in other possible sanctions. SIGNA'T'URE By: (PRINT NAME) or approval of the project or RETURN PINT{ C[lPY T® SF+GK,4NE COUN'T'Y ENGINEERS J/FA~ (509) 4S/ T W "z (504) 456-3600 wvAorityice ,h~qT 811 Jefferson Spoka,e WA 992~i@-oT 80 RECEIPT SUMMARY TRANSACTION NUMBER: T9300524 DATE: 04/15/93 APPLICANT: T D C INC PHONE= 509 928 1991 ADDRESS: 129297 E SPRAGUE AVE SPOKANE WA 99207 CONTACT NAME: T D C INC PHONE= 509 928 1991 TRANSACTION: PRELIMINARY PLAT FINAL - RIDGEMONT EST NORTH 3,4,5 DOCUMENT ID: 1) 2) 3) 4) 5) 6) FEE & PAYMENT SUMMARY ITEM DESCRIPTION QUANTITY FEE AMOUNT PRELIMINARY PLATS: FINAL 3 300.00 TOTAL DUE = 300.00 TOTAL PAID= 300.00 BALANCE OWING-- .00 PAYMENT DATE RECEIPT* CHECK# PAYMENT AMOUNT" 09/15/93 00002631 1127 300.00 PROCESSED BY: WENDEL, GLORIA PRINTED BY: WENDEL, GLORIA ,r+ t++ ~ ar~r~r a~ ~t* 'PLANK YOU L'-~' R OFFICE OF THE COUNTY ENGINEER SPOKANE COUNTY, WASHINGTON January 11, 1992 TO: Spokane County Planning Department ~Current Planning Administrator) FROM; Spokane County Engineers Department 96~- 14 SUBJ: Subdivision Conditions, !dame Ridqgfqg0±_Estate,s North Number PE 1624--92 re: Subdivisions The following "Conditions of Approval" for the above referenced subdivision are submitted to the Spokane County Hearing Examiner Committee for inclusi"o"n in the "Planning Rep"o"rt" and "Findings and Order" f".~-r the public hearing scheduled January 21, 19931. E 1 The conditional approval of the plat is given by the C"+Linty Engineer subject to dedicati"o"n of right-of-way and appr"o"val of the r6ad system as indicated in the preliminary plat of record. E 2 That plans, profiles and cross secti"o"ns as designed to County standards showing prop"o"sed street centerline and curb grades be submitted to the County Engineer for approval prior to construction and/or the filing of a final plat; road plans to be prepared under the direction of a licensed Professional Civil Engineer. E w That drainage plans and design calculations showing the alignment of drainage facilities be submitted to the County Engineer for approval prior to construction and/or the filing of the final plat. Drainage plans to be prepared under the direction of a licensed Professi"o"nal Civil Engineer. E 5 Construction within the proposed public streets and easements shall be performed under the direct supervision of a licensed engineer/surveyor, who shall furnish the County Engineer with "As Built" plans and a certificate in writing that all improvements were installed to the lines and grades shown on the appr"o"ved construction plans and that all disturbed monuments have been replaced. page 2 E E No construction work is to be performed within the existing or proposed Public Right--of-Way until a permit has been issued by the County Engineer. All work is subject to inspection and approval by the County Engineer. E 7 All construction within the e:..-sting or proposed Public Right-of-Way is to be completed prior to filing the final plat ~--)r a bend in the amoi,tnt estimated by the County Engineer to cover the cost of construction of improvements. construction certification, "As Built" plans and monufnenting the street centerlines shall be filed with the County Engineer. E 8 No direct access from lots to 1/2 Right-of-Ways until such roads are constructed to County Standards and established as County Roads. E 9 No direct access from lets to Stub Road connections until such roads are constructed to County Standards and established as County Reads. EIO Road design, construction and drainage control for 1/2 Right- of-Ways and Stub Road connections are the responsibility of the developer. E11 That appropriate provision be made that the following described property be held in trust until the continuation of the streets be dedicated or deeded; A 1 ft. strip at the ends or edges of all streets that terminate or border the plat boundary. (Temporary cul de sacs are required when streets terminate at the plat boundaries.) E12 The applicant should be advised that individual driveway access permits are required prior to issuance of a building permit for driveway approaches to the County read system. EIG Existing County roads providing direct access to the plat shall be paved and/or curbed to Spol.'ane County standards. E17 That all public roads within the plat be designed and constri(cted to Spokane County standards. E19 The ward "applicant" shall include the owner or owners of the property, his heirs, assigns and successors. .J Ili page 3 E23 The County Engineer has designated Typical Roadway Section Number Twoo,_Local_Access standard for the improvement of A1I internal_streets:_including_T.ifnberlane_Drivve which is to be constructed within the proposed development. This will require the installation of 36 ft. of asphalt. The construction of curbing is also required. E::4 The County Engineer has designated Special Roadway Section standard for the improvement of Su1liv_an Road which is adjacent to the proposed development. This will require the addition of varying amounts of asphalt along the frontage of the development. Eno The County Engineer has designated Typical Roadway Section Number Twos:_I_ocal Access standard for the improvement of 16th Avenue from Sullivan Road to the east_pri--)p!2rty line which is ad)acent to the proposed development. This will require varying amounts of asphalt along the frontage of the development. The construction of curbing and sidewalks is also required. E32 The proposed plat shall be improved to the standards set forth in Spokane County Board of Commissioners Resolution No. 80:1-1597:, as amended, which establishes regulations for roads, approaches, drainage and fees in new construction. E33 The County Engineer has examined this development proposal and has determined that the impact of thLs proposal upon the existing County Read System warrants the dedication of additional Right of Way and the roadway improvements herein specified. E'30 The applicant should be advised that there may exist utilities either underaround or overhead affecting the applicants property, including property to be dedicated or set aside for future acquisition. Spokane County will assume no financial obligation for adjustments or relocation regarding these utilities. The applicant should che6. with the applicable utilities and Spokane County Engineer to determine whether the applicant or utility is responsible for adjustment or relocation costs and to make arrangements for any necessary work. EG1 The County Arterial Road Plan identifies 16th Avenue as a Minor Arterial. The e°.isting right of way width of G« feet is not consistent with that specified in the plan. In order to implement the Arterial Road Flan it is recommended that in addition to the required right of way dedication, a strip pa ge 4 of property 1C' feet in width along 16th Avenge frontage be set wide in reserve. This property may be acquired by Spokane County at the time when Arterial improvements are made to 1Sth Avenue. Special Conditions: Existing drainage easements for preY3.ous plats exist on the parcel to be platted these easements must be changed and extinguished prior to final platting of the prc-posed development prC,pOsa1. 0th Avenue shall be constructed and dedicated from the proposed plat to Sullivan Read prior to final platting of any portion of the proposed plat. SPOKANE COUNTY HEARING EXAMINER COMMITTEE EINDINGS OF FACT,'C©NCL.USIONS AND,ORDM INTRODUCTION I d JAN 2 9 ',L-3 t This matter has come before the Hearing Examiner Committee on January 21, 1993. The members of the Committee present are Phil Harris, (Chairperson, Bud Skadan and Frank Yuse. PROPOSAL. The sponsor, Ken Tupper, requests approval of a Preliminary Plat of Ridgernont Estates North, PE-1684-92, with existing Urban Residential-3.5 (UR-3.5) zoning within the Aquifer Sensitive Area (ASA) Overlay zone. FINDINGS OF FACT AND CONCLUSIONS The property is generally located south of and adjacent to 16th Avenue and approximately 900 feet east of Sullivan Road in Section 25, Township 25 North, Range 44 EWM, Spokane County, Washington. 2. The committee adopts the Planning Department Report as a part of this record. The Planning Department has recommended that the proposed plat be approved as conditioned. 3. The existing land use(s) in the area are residential and agricultural. 4. The proposed use is compatible with existing uses in the area. 5. The Comprehensive Plan designates this site as Urban. The Urban category is for the purpose of residential uses, including residential densities of 1 to 17 units per acre, or 3.2 units for this proposal. 6. The proposed plat does implement and conform to the Comprehensive Plan. 7. The Arterial Road Plan designates 16th Avenue as an arterial, with a recommended right of way width of 80 feet. 8. The existing boning of the property described in the application is Urban Residential-3.5 (UR-3.5), previously established as Agricultural zoning in 1942 and reclassified to Urban Residendal-3.5 (UR-3.5) on January 1, 1991 pursuant to the Program to Implement the Spokane County Zoning Code. Pursuant to RCW 58.17.195 the proposal does conform to the requirements of the existing Urban Residential-3.5 (UR-3.5) zone. 9. The provisions of RCW 43.21 C (The State Environmental Policy Act) have been complied with and a Determination of Nonsignificance was issued. The Committee, after independent review, hereby adopts the DNS. 10. The legal requirements for public notice have been fulfilled. HEC Order for PE-1684-92 Page 2 11. The owners of adjacent lands expressed neither approval nor disapproval of the proposed use. 12. The proposed use will not be detrimental to the public health, safety, morals or welfare especially in light of the conditions reconunended by the reviewing agencies. 13. The subdivision proposal is generally consistent with RCW 58.17 and the County subdivision regulations, promoting the public health, safety and general welfare in accordance with standards established by the state and Spokane County. The proposal as conditioned does provide adequate public facilities as cited in RCW 58.17.110 (2). More specifically: a. open spaces b. drainage ways C. public and/or private rights-of-way d. transit e. potable water f. sanitary waste disposal 9. parks and recreation facilities h. playgrounds i. schools and schoolgrounds j . sidewalks The above improvements are either existing facilities or will be provided by the applicant upon finalization of this subdivision as conditioned by the Committee and implemented by the various County agencies. CONDITIONS OR CONTINGENCIES APPLIED TO THIS APPROVAL 1. All Conditions imposed by the Hearing Examiner Committee shall be binding on the "Applicant," which terns shall include the owner or owners of the property, heirs, assigns, and successors-in-interest. SPOKANE COUNTY PLANNING DEPARTMENT 1. The proposal shall comply with the Urban Residential-3.5 (UR-3.5) zone as amended. Note: A copy of the homeowner/property owners association covenants and restrictions shall be submitted for review and approval to the Planning Department prior to finalizing. Covenants shall state that duplexes are not allowed on lots containing 20,0010 square feet or more. Appropriate provisions shall be made for maintenance of the lift station lot and drainage lot with the sponsor and the County Engineer and Utilities Department. 2. The final plat shall be designed substantially in conformance with the preliminary plat of record. No increase of density or number of lots shall occur without a change of condition application submittal and approval. Note: Timberlane Road shall be contained wholly within the boundary of the final plat. 3. The Planning Director/designee shall review any proposed final plat to ensure compliance with these Findings and Conditions of Approval. - HEC Order for PE-1684-92 Page 3 4. A final plat name/number shall be indicated before the final plat is filed, such nameinumber to be approved by the Planning Director/designee. 5. Appropriate road name(s) shall be indicated. 6. The preliminary plat is given conditional approval for three (3) years, specifically to February 1, 1996. 'The applicant may request an extension of time by submitting a written request approximately forty-five (45) days prior to the above expiration date. 7. Appropriate utility easements shall be indicated on copies of the proposed final plat. Written approval of utility easements by appropriate utility companies shall be received with the submittal of the final plat. (8) The finial plat map shall indicate by a clear, dashed line the required yard setbacks from all private, „Tract V or public roads. The dedication shall contain the following statement: tit de yard and rear yard setbacks shall be determined at the time building permits requested unless these setbacks are specifically drafted on this final plat. The backs indicated on this plat may be varied from if proper zoning approvals are ained." 9. Three (3) current certificates of title shall be furnished to the Planning Department prior to filing the final plat. 10. Prior to filing of all or a portion of the final plat the applicant's surveyor shall submit one or more maps outlined in red of the area ping finalized. The scale shall match the appropriate assessor's map scale. 11. The Spokane County Planning Department shall prepare and record with the County Auditor a Title Notice specifying a future laird acquisition area for road right-of-way and utilities. The reserved future acquisition area Title Notice shall be released, in full or in part, by the Planning Department. The notice should be recorded within the same time frame as an appeal and shall provide the following: a. At least 10 feet of reserved future acquisition area for road right-of-way and utilities, in addition to the existing and/or newly dedicated right-of-way along 16th Avenue. NOTE: The County Engineer has required Q feet of new dedication. b. Future building and other setbacks required by the Spokane County Zoning Code shall be measured from the reserved future acquisition area. C. No required landscaping, parking, '208' areas, drainfield or allowed signs should be located within the future acquisition area for road right-of-way and utilities. If any of the above improvements are made within this area, they shall be relocated at the applicant's expense when roadway improvements are made. d. The future acquisition area, until acquired, shall be private property and may be used as allowed in the zone, except that any improvements (such as HEC Order for PE-1684-92 Page 4 - landscaping, parking, surface drainage, drainfield, signs or others) shall be considered interim uses. e. The property owner shall be responsible for relocating such "interim" improvements at the time Spokane County makes roadway improvements after acquiring said future acquisition area. The final plat shall indicate yard setback arc lengths on cul-de-sac lots which meet 12. G or exceed the minimum frontage of the underlying zone of the final plat. 13. A plan for water facilities adequate for domestic service and fire protection shall be approved by the water purveyor, appropriate fire protection district, County Building & Safety Department and County Health District. The agencies will certify on the Water Plan, prior to the filing of a final plat, that the plan is in conformance with their respective needs and regulations. The Water Plan and certification shall be drafted on a transparency suitable for reproduction and be signed by the plat sponsor. 14. The water purveyor shall certify that appropriate contractual arrangements and schedule of improvements have been made with the plat sponsor for construction of the water system in accordance with the approved Water Plan. The time schedule shall provide for completion of the water system and inspection by the appropriate health authorities prior to application for building permits within the final plat. The arrangements or agreements shall include a provision holding Spokane County and the purveyor harmless from claims by any lot purchaser refused a building permit due to the failure of the subdivision sponsor to satisfactorily complete the approved water system. 15. °e final plat dedication shall contain the following statement: f public water system, pursuant to the Water Plan approved by county and state h authorities, the local fire protection district, County Building & Safety ent and water purveyor, shall be installed within this subdivision and the cant shall provide for individual domestic water service as well as fre ction to each lot prior to sale of each lot and prior to issuance of a building permit for each lot." 16. No building permit will be issued for any lot within the final plat until certified by a Washington state-licensed engineer that "the water system has been installed pursuant to the approved Water Plan for the final plat " including a signed license stamp. The certification may be in the form of a letter, but is preferred to be certified on a copy of the Water Plan as a schematic map showing the "as-built" water system. 17. The Water Plan and the above four (4) conditions of approval regarding the Water Plan may be waived by the Planning Director/designee upon receipt of letters from the appropriate water purveyor and fire protection district stating that simple connections to an existing, approved water system will provide adequate domestic and fire protection water to ensure the public health, safety and general welfare. 18. A survey is required prior to the filing of a final plat. BEC Order for PE-1684-92 Page 5 19. Prior to approval of road and drainage plans, you are required to coordinate with the United States Postal Service to determine type and location of central mail delivery facilities which may include applicable easements for developments of three or more homes. 20. The preliminary plat approval of PE-1423-82, that exists on this site shall become null and void and be replaced by this approval. Note: A portion of PE-1423-82, is ' active as it lies outside of this proposal, PE-1684-92. The plat dedication shall contain a statement to the effect that no duplex shall be allowed on lots of 20,000 square feet or greater. SPOKANE COUNTY DIVISION OF ENGINEERING AND ROADS Prior To 1 suance Qf A Building Permit a Use Of The Pommy As BwDQsed: The conditional approval of the plat is given by the County Engineer subject to dedication of right-of-way and approval of the road system as indicated in the preliminary plat of record Plans, profiles, and cross-sections as designed to County standards showing proposed street centerline and curb grades shall be submitted to the County Engineer for approval prior to construction and/or the filing of each final plat; road plans to be prepared under the direction of a licensed Professional Civil Engineer. 3. Drainage plans and design calculations showing tie alignment of drainage facilities shall be submitted to the County Engineer for approval prior to construction and/or the filing of the final plat. Drainage plans to be prepared under the direction of a licensed Professional Civil Engineer. 4. Construction within the proposed public streets and easements shall be performed under the direct supervision of a licensed engineer/surveyor, who shall furnish the County Engineer with "as-built" plans and a certificate in writing that all improvements were installed to the lines and grades shown on the approved construction plans and that all disturbed monuments have been replaced. 5. No constriction work is to be performed within the existing or proposed public right-of-way until a permit has been issued by the County Engineer. All work is subject to inspection and approval by the County Engineer. 6. All construction within the existing or proposed public right-of-way is to be completed prior to filing each final plat, or a bond in the amount estimated by the County Engineer to cover the cost of construction of improvements, construction certification, "as-built" plans and monumenting the street centerlines shall be filed with the County Engineer. 7. No direct access from lots to one-half (1/2) rights-of-way until such roads are constructed to County standards and established as County roads. 8. No direct access from lots to stub road connections until such roads are constructed to County standards and established as county roads. BEC Order for PE-1684-92 Page 6 9. Road design, construction, and drainage control for one-half (1/2) rights-of-way and stub road connections are the responsibility of the owner, developer or applicant. 10. That appropriate provision be made that the following described property be held in trust until the continuation of the streets be dedicated or deeded: A one foot strip at the ends or edges of all streets that terminate or border the plat boundary. (Temporary cul de sacs are required when streets terminate at the plat boundaries). 11. Individual driveway access permits are required prior to issuance of a building permit for driveway approaches to the county road system. 12. Existing county roads providing direct access to the plat shall be paved and/or curbed to Spokane County standards. 13. All public roads within the plat shall be designed and constructed to Spokane County standards. 14. The word "applicant" shall include the owner or owners of the property, his heirs, assigns and successors. 15. The County Engineer has designated Typical Roadway Section Number Two, Local Access standard for the improvement of All internal streets, including Timberlane Drive, which is to be constructed within the proposed development. This will require the installation of 36 feet of asphalt. The construction of curbing is also required. 16. The County Engineer has designated Typical Roadway Section standard for the improvement of Sullivan Road, which is adjacent to the proposed development. This will require the addition of varying amounts of asphalt along the frontage of the development 17. The County Engineer has designated Typical Roadway Section Number Two, Local Access standard for the improvement of 16th Avenue from Sullivan Road to the east property line, which is adjacent to the proposed development. This will require varying amounts of asphalt along the frontage of the development. The construction of curbing and sidewalk is also required. 18. The proposed subdivision shall be improved to the standards set forth in Spokane County Board of Commissioners Resolution No. 80-1592, as amended, which resolution establishes regulations for roads, approaches, drainage and fees in new construction. 19. The County Engineer has examined this development proposal and has determined that the impact of this proposal upon the existing county roLd system warrants the dedication of additional right-of-way and the roadway improvements herein specified. 20. There may exist utilities, either underground or overhead, affecting the subject property, including property to be dedicated or set aside for future acquisition. Spokane County assumes no financial obligation for adjustments or relocation regarding these utilities. Applicant(s) should check with the applicable utility purveyor and the Spokane County Engineer to determine whether applicant(s) or BEC Order for PE-16.+ ,2 Page 7 the utility is responsible for adjustment or relocation costs and to make arrangements for any necessary work. 21. The County Arterial Road Plan identifies 16th Avenue as a Minor Arterial. The existing right-of-way width of 60 feet is not consistent with that specified in the Plan. In order to implement the Arterial Road Plan, in addition to the required right-of-way dedication, a strip of property 10 feet in width along the 16th Avenue frontage shall be set aside in reserve. This property may be acquired by Spokane County at the time when arterial improvements are made to 16th Avenue. Spfcial Condition: Existing drainage easements for previous plats exists on the parcel to be platted. These easements must be changed and extinguished prior to final platting of the proposed development proposal. 20th Avenue shall be constructed and dedicated from the proposed plat to Sullivan Road prior to final platting of any portion of the proposed plat. SPOKANE COUNTY DIVISION OF UTILITIES 1. Applicant will make connection to Public Sewer System. Sewer Connection Permit is required. Plans and specifications are to be reviewed and approved by the Utilities Department. SPOKANE COUNTY HEALTH DISTRICT 2y!in'l plat shall be designed as indicated on the preliminary plat of record and/or tached sheets as noted. 2. propriate utility easements shall be indicated on copies of the preliminary plat of ord for distribution by the Planning Department to the utility companies, okane County Engineer and the Spokane County Health District. Written proval of the easements by the utility companies must be received prior to the bmittal of the final plat. 3. Sewage disposal method shall be as authorized by the Director of Utilities, Spokane County. 4. Water service shall be coordinated through the Director of Utilities, Spokane County. 5. Water service shall be by an existing public water supply when approved by the Regional Engineer (Spokane), State Department of Health. 6. Prior to filing the final plat, the sponsor shall demonstrate to the satisfaction of the Spokane County Health District that an adequate and potable water supply is available to each lot of the plat. 7. Prior to filing the final plat, the sponsor shall present evidence that the plat lies within the recorded service area of the water system proposed to serve the plat. HEC Order for PE- 1684-92 Page 8 t 8. A plan for water facilities adequate for domestic use, domestic irrigation use and fire protection use shall be approved by the water purveyor. Said water plan must have been approved by the fire protection district and the appropriate health authorities. The health authorities, water supplier (purveyor) and the fire protection district will certify, prior to the filing of the final plat, on the face of said water plan that the plan is in conformance with their requirements and will adequately satisfy their respective needs. Said water plan and certification will be drafted on a transparency suitable for reproduction. 9. The purveyor will also certify prior to filing the final plat on a copy of said water plan that appropriate contractual arrangements have been made with the plat sponsor for construction of the water system, in accordance with the approved plan and time schedule. The time schedule will provide, in any case, for completion of the water system and inspection by the appropriate health authorities prior to application for building permits within the plat, The contractual arrangements will include a provision holding Spokane County/City of Spokane, Spokane County Health District and the purveyor harmless from claims by any lot/tract purchaser refused a building permit due to failure of the plat sponsor to satisfactorily complete the approved water system 10. A public sewer system will be made available for the plat/project, and individual service will be provided to each lot prior to sale. Use of individual on-site sewage disposal systems shall not be authorized. 11. A tement shall be placed in the dedication to the effect that: "A public sewer s em will be made available for the plat, and individual service will be provided to e lot prior to sale. Use of individual on-site sewage disposal systems shall not t- ___L It 12. dedicatory language on the plat shall state: "Use of private wells and water ems is prohibited." Itt 13. e plat dedication will contain a statement to the effect that: '"The public water system approved by the County and State Health Authorities and the local fire district and eyor will be installed within this plat, and the subdivider will provide for individual mestic water service as well as fire protection to each lot prior to sale of each lot and for to issuance of a building permit for each lot. SPOKANE COUNTY DIVISION OF BUILDINGS 1. Fire flows are applicable for this proposal. The minimum fire flow and flow duration will be based on a representative dwelling size for all floors not including the basement. The maximum dwelling size needs to be submitted to the Department of Buildings. 2. An approved water supply capable of supplying the required fire flow for fir protection shall be provided before any building permits are issued. The water system shall be installed in accordance with an approved Water Systems Plan on file with the Department of Buildings. Certification that the installed system complies with the requirements of the plan and is operational shall be submitted to the Department of Buildings prior to permit issuance. BEC Order for PE-1684-92 Page 9 3. Hydrant location, number and type capable of delivering the required fire flow for residential development shall be provided in accordance with required design specifications. The average distance between hydrants shall be 600 feet and shall not exceed 700 feet. SPOKANE COUNTY AIR POLLUTION CONTROL AUTHORITY All air pollution regulations must be met. 2. Air pollution regulations require that dust emissions during demolition, construction and excavation projects be controlled. This may require use of water sprays, tarps, sprinklers or suspension of activity during certain weather conditions. Haul roads should be treated, and emissions from the transfer of earthen material must be controlled, as well as emissions from all other construction-related activities. 3. All travelled surfaces (ie. ingress, egress, parking areas, access roads) should be paved and kept clean. 4. Measures must be taken to avoid the deposition of dirt and mud from unpaved surfaces onto paved surfaces. If tracking or spills occur on paved surfaces, measures must be taken immediately to clean these surfaces. 5. Debris generated as a result of this project must be disposed of by means other than burning (ie. construction waste, etc.). 6. Demolition and renovation projects must comply with the requirements of CFR 40, Part 61, subpart M and SCAPCA Regulation I, Article IX. Intent to Demolish forms are available at the SCAPCA office. 7. all solid fuel burning devices (wood stoves, pellet stoves, etc...) must comply with local, state, and federal rules and regulations. HEC Order for PE-1684-92 Page 10 The Hearing Examiner Committee, pursuant to the above Findings of Fact and Conclusion, APPROVES the application of Ken Tupper for the Preliminary Plat as described in the application PE-1684-92 known as Ridgemont Estates North. Motion by: Frank Yuse Seconded by: Bud Skadan Vote: (3-0) UNANIMOUS TO APPROVE THE PRELIMINARY PLAT WITH EXISTING URBAN RESIDENTIAL-3.5 (UR-3.5) ZONING HEARING EXAMINER COh!K- E HEREBY ATTEST TO THE ABOVE FIIs ATTEST.- For WALLIS D. HUBBARD Planning Director kUL F. ]ENSEN Planner Da Pursuant to County regulations, any aggrieved party has the right to appeal this written decision to the Spokane County Board of County Commissioners within ten (10) calendar days of the signing of this order. Upon receipt of an appeal, a public hearing will be scheduled. If you desire to file such an appeal, you must submit a written appeal, preferably on forms designed for such purpose, to the Board of County Conu-nissioners, W. 1115 Broadway, Spokane, WA 99260, along with a $200 processing fee payable to the Spokane County Treasurer. If you have any questions, please call the Planning Department at 455-2205. bimp"6'on li-ngln em, Inc. CIVIL ENGINEERS AND LAND SURVEYORS N. 909 Argonne Road - Spokane, WA 99212 (509) 926-1322 - Fax. 926-1323 TRAN'SAMERICA TITLE INSURANCE COMPANY 720 NORTH ARGONNE SPOKANE, WASHINGTON 99212 (509) 922-2222IFAX 926-1519 PREPARED FOR: TUPPER & ASSOCIATES ATTN: KEN TUPPER 12929 E. SPRAGUE cc: Simpson Engineers/Duane FIFTH PLAT CERTIFICATE Effective Date: May 5, 1994 at 8:00 a.m. Order No.: MW-178635M Certificate for Filing Proposed: RIDGEMONT ESTATES NORTH 5TH ADD. Charge: Tax: Total: $125.00 10.00 $135.00 In the matter of the subdivision to be submitted to Spokane County for approval, this company has examined the records of the Spokane County Auditor's and Clerk's offices, and the office of the Clerk of the United States District Court holding terms in said county. This certificate is made for the purpose herein specified, and is not to be used as a basis for closing any transaction. Liability is limited to the amount paid for this certificate. From such examination, the company hereby certifies the title to the following describer) land, in said Spokane County, to wit: That portion of the Northwest quarter of Section 25, Township 25 North, Range 44 East, W.M.; described as follows: BEGINNING at the Northeast corner of Lot 2 Block 2 of RIDGEMONT ESTATES NO. 4 - 2ND ADDITION, as recorded in 19 of Plats, page 71; thence North 89°20'22" West, along the North line of said Block 2, 500.60 feet to the Northwest corner of said Block 2 and the Easterly line of Sonora Street; thence. North 00°39'3$" East, along said Easterly line, 170.00 feet to the beginning of a curve concave to the West with a radius of 435.00 feet; thence Northwesterly along said. Easterly line, through a central angle of 13"47'3:", an arc distance of 1014.72 feet to the end of curve and the Southwest corner of Lot 1 Block 6 of RIDGEMONT ESTATES NORTH 2ND ADDITION; thence North 76'°52'01" East, 135.00 feet to the Southeast corner of said Lot 1; thence South 89°20'22" East 148.86 feet; thence South 16i°53'57" East, 56.23 feet; thence South 55°33'42" East:, 295.63 feet to the Westerly lane of RIDGEMONT ESTATES; thence South 1'9'°13' 09" West 92.75 feet to the Point of Beginning; Situate in the County of Spokane, State of Washington. sage 1 of 4 5% NEI) W 2 3 1994 spwu C-OWITY ENGINEER Order No.: and wife. MW-178635 1. Taxes and assessments, if any, no search having been made thereof, as to Parcel No. 45255.9065. Parcel numbers are provided from the latest Assessor's Maps available to the company. Said parcel numbers are not a matter of the public record therefor, the company makes no assurance as to validity ❑r accuracy relating thereto. 2. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: Spokane County, a municipal corporation PURPOSE: Right of way for road for ingress and egress to locate, establish, construct, operate and maintain, repair, and all matters incidental thereto, storm drainage systems, and to cut down and clear away trees, brush, crops and/or debris. AREA AFFECTED: 5 ft. on either side of following centerline: Beg. at SW corner of Lot 19, Block 1, Ridgemont Estates; thence N.89°32'42"W. 5.19 ft. to pob; thence N.16010'34"E. 342.16 ft.; thence N.71°42'35"W. 2.4 ft.; thence N.2*07'E. 133 ft.; thence N.11°05'E. 375 ft.; thence N.17°20'E. 262 ft.; thence N.28°34'E. 115 ft.; thence N.34°33'E. 405 ft. to existing stock pond. DATED: December 10, 1975 RECORDED: December 12, 1975 RECORDING NO.: 7512120288 page 2 of 4 EXCEPTIONS: Order No.: MW-178635 3. AGREEMENT AND THE TERMS AND CONDITIONS THEREOF: BETWEEN: AND: DATED: RECORDED: RECORDING NO.: REGARDING: AREA AFFECTED: Alphons B. Renz and Hilda E. Renz, Indemnitors Spokane County, Indemni.tee December 10, 1975 December 12, 1975 7512120290 To indemnify and release the indemnitee from all actions attributable to the indemnitee locating, establishing, constructing, operating, maintaining and all matters incidental thereto, the drainage control svstem -in conjunction with Ridgemont Estates. NW114 of Sec. 25, lying Nally of Ridgemont Estates. 4. AGREEMENT AND THE TERMS AND CONDITIONS THEREOF: BETWEEN: Spokane -County, a political subdivision of the State of Washington AND: Sullivan South Enterprises, a Washington general partnership, and Alfons B. Renz and Hilda E. Renz, - husband and wife DATED: September 15, 1988 RECORDED: September 21, 1988 RECORDING NO.: 8809210088 REGARDING: Sewerage system 5. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: Spokane County PURPOSE: Sewer facilities AREA AFFECTED: A portion of said land DATED: September 15, 1988 RECORDED: September 21, 1988 RECORDING NO.: 8809210091 page 3 of 4 Order No.: MW-178635 6. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: Spokane County PURPOSE: Sewer facilities AREA AFFECTED: A portion of said land DATED: September 15, 1988 RECORDED: September 21, 1988 RECORDING NO.: 8809210092 7. DEED OF TRUST AND THE TERMS AND CONDITIONS THEREOF: GRANTOR: Alfonz B. Renz and Hilda E. Renz, husband and wife TRUSTEE: y. a California co_rporati n BENEFICIARY: nk ORIGINAL AMOUNT: $56,000.00 DATED: October 20, 1992 RECORDED: October 26, 1992 RECORDING NO.: 9210260183 AFFECTS: A portion of said property 8. Potential liability for assessments levied by Spokane County Utility Department for the Aquifer Protection Area. To verify, call 458-2538. In order to make payment, account number is necessary. 9. Liability to future charges by Spokane County for Storm Water service. *END OF EXCEPTIONS* TRANSAMERICA TITLE INSURANCE COMPANY 1 By yL~, (,~~~C.Q ~r A Maureen Wild, Title Officer ENCLOSURES: Sketch and page 4 of 4 -SOR I Xc. q-1~I J TRANSAMERICA TITLE 2-4 'r26, 4. s..o; COMPANY c3 is ska►ch is Provided. rdthRut charqe.Tar your formation h 1s not intarwsed to show f msttmt Y hired to the property,ftcl,xhny,'but no lirraitad t area, dimensions, ea~e+rcents, encr mants. et' orlon of bnundepas h is riot part of, do" k ty, the cprrmrtment or Po'icy to ich it is ached The Company ssaumas No U BIUTy fnr trry mvier related to this sk,! ch. Reference houid be "de to as Ascwato ausvvy for further a f+orrnatkwL i r ESTATES ACYL 1141L 08 C 1r a ti , D9 L RIDGEMCNT ESTATES NO.4 ~tjiDGVAOT d ADD ATE [4o 2,nd A-Do o Ta7 r, mn A_ tRl DGEONT G. / 6 Try .-Aua. ~ RID~EMONT g7pTES j 1 RIDvEMON" 4 ~~tJ4 J404 lot 35 ors M J ►f Jo 0Er -,f , so At AV C-0 NO. 2 I I I i i I ~xal~ e - LA ZA ---,34 n - sana'w' a - 0419'27' 1 R - 4000' R - 70 00' i - 2000' 1 - t0 51' L o 3142' L 29 43' Gr rRAPFIIC SCAM (IN FEET) +y 0 25 50 1 °A' ' AN - 4959'41' tl 13 4737° H-2000' R- 41000' 1' 50' 1 i +9.33' i ~ 4959' v; ® L 17.45' L ' 89.71' C] S89'20'22"E 148.86' SUP 75' t006 LEGEND I .;77~ `35'00 148.86.3 o Set 1 f f nbi k IM f 9" 7 rr d rated fns 1/f I,w np Ho. 654t/4967 ~ oz ral~d 10 Sd I/f re6dry k*§ lICA TfrLE INSURANCE COMPNNY Building Se 7: b tbac$c 5 = Bu"V61 TWk)dkbmc1-is prerided. widx3ul charge, far your 5S°-b = tjh111y iflee-itston It Is not inter,d~d to 40w RII M21101`3 0' 1 reletad to 1tN praraerty mclaatn {6u1 rat 1nrwted I 7 8 ❑ .3J. to, area, dtmansians, easwnea,st, ■rlcraecfimrtnts, or hmetlon c4 hnunderies N is notpan at~ do-s N I N °1i~. z Cc' ndlty. the comm;1mant a policy to which it is -15_00' i d The Complny asez~nes NO LIABILITY fnr any 589'26'22 -u r Z. i ~9S matte . ed to th+a ske4r elerence should be S c`4 made to aA'rccwate forrlurtiar infnrmatron 100 00' 6 38' I O 40' Utility Eoaem" S n d% fi f r-------------- r- N • ~ ~ I r (3uiFd~n~ $etLvcl~ `_R_ ¢tp• l w b~ hI * T s~ b 10 Z O im a : F ~30' r w f -d 1 I 120.00' 120-00' 2M60' 12 'r 25' 25' N89'20'22'W 500.60' C17 1 ~ o C RIDGEMONT ESTATES /NO.4 - 2ND ADDITION 13 R CL r , e ~rc - - t J r V) BOND ESTIMATE PROJECT P1684D RIDGEMONT EST NORTH 5TH ADDNAME. DAVE BERTO DATE 25-Mar-94 DRAINAGE ITEMS UNITS QUANITY PRICE COST 1) Drywe 1 1 - Type A EA 2 1200.00 2400.00 2) Drywell - Type B EA 1 1600.00 1600.00 3) Grate - Type 1 EA 300.00 0.00 4) Grate Type 2 EA 330.00 0.00 5) Grate - Type 3 EA 3 300.00 900.00 6) Backfill For DW CY 100 15.50 1550.00 7) Concrete Inlet EA 700.00 0.00 8) C. M. Pipe 10" Dia. LF 22.00 0.00 9) C. M. Pipe 12" Dia. LF 25.50 0.00 10) C. M. Pipe 15" Dia. LF 27.50 0.00 11) C. M. Pipe 18" Dia. LF 29.00 0.00 12) Precast Manhole EA 1450.00 0.00 13) Solid lid EA 300.00 0.00 14) Ditch/208 Excavation CY 75 10.00 750.00 15) Sod SF 0.70 0.00 NON STANDARD DRAINAGE ITEMS 1) Filter Fabric Lining For 3 M.H. LS 350.00 2) Energy Dissipation M. H. & Rip Rap LS 3000.00 3) Offsite Ditch & Access Road LS 2500.00 4) Type 1 Curb Drops EA 1 200.00 200.00 5) 0.00 6) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0.00 - - - - - - - - - - - - - - - - - - - - - DRAINAGE - - - - - - - - SUBTOTAL - - - - - - - - - - - - - - - - 13250.00 - 16) Monuments EA 1 180.00 - 180.00 17) Barricade LF 30.00 0.00 18) Street Signs EA 1 80.00 80.00 OTHER SUBTOTAL 260.00 GRAD I NG, SURFACING, CURB, AND SIDEWALK 19) Rough Grade CY 441.3 10.00 4413.00 20) Top Course CY 220.7 14.00 3089.80 21) Base Course CY 14.00 0.00 22) Asphalt Concrete Tons 150.8 44.00 6635.20 23) Curb Type A LF 585 6.60 3861.00 24) Curb Type B LF 7.90 0.00 25) Curb Type R LF 7.60 0.00 26) Sidewalk SO YD 16.40 0.00 NON-STANDARD ROAD ITEMS 1) 0.00 2) 0.00 3) 0.00 4) 0.00 GRADING AND SURFACING 17999.00 3 - 6 00-00 GRAND TOTAL 31,509.00 STREET QUANTITIES PROJECT NO.- P1684D DESIGNER- DAVE BERTO DATE- 3/25/94 PROJECT DESCRIPTION- RIDGEMONT ESTATE NORTH 5TH ADD STREET # 1 NAME- 21ST COURT LENGTH- 197.00 FT. WIDT H- 36.00 FT. BEGINNING STATION = 1462.32 ENDING STATION = 1659.32 TERM # 1 : CHOPPED TERM # 2 : CUL-DE-SAC STANDARD PERM RADIUS = 45.00 RADII = 20.00 ITEM MEASUREMENT QUANTITY SURFACE AREA- 11916.22 S.F. ROADWAY EXCAVATION 1.00 FT. 441 3 C Y CRUSHED SURFACING TOP COURSE 0.50 FT. . 220.7 . . C Y CRUSHED SURFACING BASE COURSE 0.00 FT. 0.0 . . C Y ASPHALT CONCRETE 0.17 FT. 150.8 . . TONS CURB TYPE A EXISTING 0.00 FT. PROPOSED 552.9 FT. TOTALS ROADWAY EXCAVATION CRUSHED SURFACING TOP COURSE CRUSHED SURFACING BASE COURSE ASPHALT CONCRETE CURB TYPE A 441.3 C. Y. 220.7 C. Y. 0.0 C. Y. 150.8 TONS 552. 9 FT. 1 t2.2•l 5~5 4 SPOKANE COUNTY ENGINEERING - DEVELOPMENT ENGINEERING SERVICES BOND ESTIMATE FORM F pd -T:-7 T 3 4A DATE S-2 '9 4-9 PROJECT j 2F- o jr-- - PREPARER ~ja _ PROJECT NO. P16642 ITEM # DESCRIPTION QUANTITY PRICE TOTAL COST 1 TYPE "All DRYWELL e*. $ 2 TYPE "B" DRYWELL $ 3 TRIPLE DEPTH DRYWELL $ 4 FILTER FABRIC LINING FOR TYPE A & B DRYWELLS $ 5 FILTER FABRIC LINING FOR TRIPLE DEPTH DRYWELL $ 6 BACKFILL FOR DRYWELLS !o 0 $ 7 TYPE 1 METAL GRATE $ 8 TYPE 2 METAL GRATE $ 9 TYPE 3 METAL GRA'Z'E $ 10 WSDOT TYPE 2 GRATE $ 11 WSDOT TYPE 2 CONCRETE INLET BASE - UNIT "H" $ 12 SPOKANE CO. CONC. INLET $ 13 48" PRECAST MANHOLE $ 14 SOLID METAL LID $ 15 DITCH/208 EXCAVATIO N. $ 16 8" ST SEWER - $ 17 10" ST SEWER - $ 18 12" ST SEWER - $ 19 15" ST SEWER - $ 20 18" ST SEWER - $ 21 21" ST SEWER - $ 22 24" ST SEWER - $ 23 30" ST SEWER - 24 36" ST SEWER NON STANDARD ITEMS: ylqg~-zPA-17&H 4-AD 2 rTg- • cre-4 +J r-s A.-to 3 -T-Y pe- 6 J~PS 4 5 f TOTAL, ESTIMATED CONSTRUCTION COST: $ 000,00 $7~vo,ao $ COMMENTS ON BOND ESTIMATE: IF .w OFFICE OF THE COUNTY ENGINEER Spokane County, Washington March 24, 1994 To: ~s 1 AJ $,S."J e+~r From: Development Engineering Services RE: Language for Plat Dedication & Covenants Project 1 Drainage easements, as platted a', operating, and maintaining drainage to the public. The drainage DECLARATION OF COW Auditor's Document which by {W dcdicat.pryU4MaH4 shown hereon, whic are for the purpose of installing, ciiities, as con i tans of plat approval, are hereby granted ..nts, a lots in this Plat are subject to the separate as under made a part hereof. G: The draft covenant must be recording the covenant'} the County Engineer's Office ,e: A w RE- Language for Plat [Dedication & Covenants Project # DECLARATION OF COVENANT In consideration of the approval by Spokane County of (hereinafter referred to as the "Plat"), the undersigned covenants and agrees that: Spokane County is hereby granted the right of ingress and egress to all private roads andlor drainage easements, for the purpose of inspection and emergency maintenance of drainage swales, and any other drainage facilities, if not properly maintained by the property owners. Spokane County does not accept the responsibility to inspect and maintain the drainage easements or drainage swales, nor does the County accept anoability for failure by the property owners to properly maintain such areas. The property owners wit/in this Plat shat a held responsible for keeping ape n a 'tnaitztaining the surface path of natural or ~zy MA -made drainage flow over and across it respective properties. The property owners within this Plat shall maintaa on their respective properties, and any portion to properties with a permanent ground cover as speci The property owners may install approved shrub drainage water in the 208 swale and drainage d Engineer's Office. all water quality treatment ales ('208 swales") and drainage ditches situated a 2018 swale situated in lie public right-0f--way adjacent to their respective d on the current app ved plans on file with the County Engineer's Office. b andlor trees w h do not obstruct the flow and percolation of storm etch , as indicated y the current approved plans on file with the County The property owner or his representative shall inform eacsuding purchaser of all drainage easements on the property and of his responsibility for maintaining surface drainage pa swales within said easements. Spokane County does not accept the responsibility for main \rnight ainage course an private lots within drainage easements or floodplatn areas, and accepts no responsibility for any ver, including, but not limited to inverse condemnation to any properties due to deficient construction and/or ntenage courses in drainage easements on private property. Whenever the lot owners or their successors in inte st fail e drainage facilities in conformance with the approved drainage plan, a notice of such failure may be giv to the leir successors in interest by the County. If not corrected within the period indicated on said notice, the ounty has orrect the maintenance failure, or to have it corrected. at the expe nse of the lot owner or their suce sors in inteAny building that is constructed on a lot in lis Plat shall be set at such an eva only drainage entry point to the building ncluding but not limited to a win o~ or a doorway)- Said positive drainage I consist of a minimum slope of a 10 feet from the building. The lots s 1 be graded so that either a) all runoff over die lot to a natural drainage sw a or approved drainage facility, or b) dr, lot in an approved drainage facilit - The approved drainage facility shall be a on file at the County Engineer's O face. Any revisions to the approved drainage Office prior to construCtlon of id revisions. ion so as to provide positive drainage away from R well, a window unprotected by a window well. away from the building for a distance of at least routed away from the building, and conveyed i ge intercepted on the lot is disposed of on the ns cted in accordance with the approved plans pl must be approved by the County Engineer's [ 8.~This covenant and agreeme shall run with the land and shall be binding upon the o er, their heirs, successors or assigns. including the obligation to anticipate in the maintenance of the drainage facilities, as p vided herein. RE: Drainage Language for Plat Declaration of Covenant Project. # If there are continuous swales for water quality treatment (208 strip swales) on the Parcel: 9. Driveway access permits for driveway approaches to the County road system are required prior to issuance of a building permit. -1-his approach shall be constructed in accordance with the approved plan on file in the County Engineer's Office. If a floodplain occurs on the Parcel: to. Development within this Plat shall conform the requirements of the National Flood Insurance Program, and Chapter 3.20 of the Spokane County Code. The lowest floor, including basement floor, for any structure shall be constructed in accordance with the requirements of the Spokane County Flood Zone Regulations in effect at the time a building permit is issued. Purchasers of property in this subdivision are warned of possible flooding or ponding and the of the potential requirement to purchase Flood Insurance. This warning shall be carried in each and every deed to transfer ownership of any and all property within this plat in the Area of Special Flood Hazard. 11. An approved grading plan exists for Lot(s), & of Block Grading must conform to said plan on file in the County Engineer's Office. 12. Spokane County does not accept any responsibility whatsoever to establish or maintain ingress or egress across the flood plain area. If the Parcel is located in a watershed with major stormwater problerins: 13. The Plat is located within a drainage basin which has been identified by Spokane County as having stormwater nmoff problems Since this Plat is affected by, or is a contributor to stormwater flows, the property owners, or their successors in interest, agree to participate in the planning and implementation of a future basin-wide stormwater management system and/or assessment district. The property owners, or their successors in interest, agree to pay such rates and charges as may be fixed through public hearings, for service or benefit obtained by the planning, design, construction, maintenance, or operation of stormwater control facilities. If the road and/or drainage facilities are established in separate tracts (as opposed to easements) 14. The private road and drainage easement areas cannot be sold or transferred, regardless of any provisions to the covenants to the contrary, without the express written consent of Spokane County, and shall be considered for tax purposes to be subservient estates to the other lots created herein. (INDIVIDUAL OR CORPORATE ACKNOWLEDGEMENT) declara.prv124Mar94 . % {INDIVIDUAL ACKNOWLEDGEMENT) (signature) (name) (signature) (name) STATE OF WASHINGTON) ) ss County of Spokane ) I certify that I know or that I have satisfactory evidence that (and ) is(are ) the person(s) who appeared before me , and said persons acknowledged that he(she)(they) signed this instrument, on oath stated that he(she)(they) was(were) authorized to execute the instrument and acknowledged it as his(her)(their) free and voluntary act and deed, for the uses and purposes stated in the instrument. DATED this day of 1199-. NOTARY PUBLIC in and for the State of Washington, residing at My appointment expires pubcwdrAng\Dec93 f CORPORATE ACKNOWLEDGEMENT) (CORPORATION NAME) Icy: (Title) STATE OF WASHINGTON) ss County of Spokane } I certify that I know or that I have satisfactory evidence that is the person who appeared before me , and said person acknowledged that he(she) signed this instrument, on oath stated that he(she) was authorized to execute the instrument and acknowledged it as the (Title) of (Corporation name) to be the free and voluntary act of such corporation, for the uses and purposes stated in the instrument. DATED this day of , 1qq~ . NOTARY PUBLIC in and for the State of Washington, residing at My appointment expires f a pubrwdr.laglDec93 1 k 1 FROM ANGLE DIST NORTH EAST TO P 1684D RIDGEM ONT ESTATES NORTH 5TH ADD PLAT HOUNDRY 9-14-93 D.H. AUTO IN VERSE START 1000.00000 1000.00000 1 1 INV N 89 20 22.0 W 500.6000 1005.77122 499.43327 2 2 INV N 0 39 38.0 E 170.0000 1175.75993 501.39313 3 RADIAL S 89 20 22.0 E DELTA 13 47 37.0 LT RADIUS 435. 0000 TAN 52.6162 L-ARC 104. 7236 RADIAL N 76 52 01.0 E RP 1180.77487 66.42204 4 3 CHORD N 6 14 10.5 W 104.4709 1279.61261 490.04464 5 TAN@PT N 13 07 59.0 W 5 INV N 76 52 01.0 E 135. 0000 1310. 28639 621. 51372 6 6 INV S 89 20 22.0 E 148.8600 1308.57024 770.36382 7 7 INV S 16 53 57.0 E 56.2300 1254.76837 786.70923 8 8 INV S 55 33 42.0 E 295.6300 1087.58402 1030.52573 9 9 INV S 19 13 09.0 W 92.7500 1000.00332 999.99405 10 LAT & DEG -0.00332 0.00595 10 HCLOSE S 60 51 47.2 E 0.0068 1000.00000 1000.00000 1 PREC = 1 TO 2207 18 Area = 125767.83 sq ft 2.88723 ac FROM ANGLE DIST NORTH EAST TO LOTS 1, 3, 4, 5 SIDELINES AUTO IN VERSE START 1279.61261 490.04464 5 5 INV N 76 52 01.0 E 135.0000 1310.28639 621.51372 6 6 INV S 89 20 22.0 E 148.8600 1308.57024 770.36382 7 7 INV S 16 53 57.0 E 56.2300 1254.76837 786.70923 8 8 INV S 55 33 42.0 E 295.6300 1087.58402 1030.52573 9 9 INV S 19 13 09.0 W 92.7500 1000.00332 999.99405 10 10 INV N 89 20 22.0 W 500. 6000 1005. 77454 499. 42732 11 11 INV N 0 39 38.0 E 125.0000 1130.76623 500.86839 12 RADIAL N 89 20 22.0 W DELTA 90 00 00.0 RT RADIUS 20.0000 TAN 20.0000 L-ARC 31.4159 RADIAL N 0 39 38.0 E RP 1130.53566 520.86706 13 12 CHORD N 45 39 38.0 E 28.2843 1150.53433 521.09764 14 TAN@PT S 89 20 22.0 E 14 INV S 89 20 22.0 E 116.3800 1149. 19263 637.46990 15 RADIAL N 0 39 38.0 E DELTA 49 59 41.0 RT RADIUS 20.0000 TAN 9.3250 L-ARC 17.'4515 RADIAL N 50 39 19.0 E RP 1129. 19396 637.23933 16 15 CHORD S 64 20 31.5 E 16.9031- 1141.87366 652.70624 17 TAN@PT S 39 20 41.0 E RADIAL S 50 39 19.0 W DELTA 279 59 22.0 LT RADIUS 50.0000 TAN 41.9628 L-ARC 244. 3369 Pon T 01 N 4Q M M7 M IJ RP 1173.517289 691.37352 18 17 CHORD N 0 39 38.0 E 64-P-858 1206. 15520 6 53. 44737 19 TAN@PT S 40 39 57.0 W RADIAL S 49 20 03.0 E DELTA 49 59 41.0 RT RADIUS 20.0000 TAN 9.3250 L-ARC 17.4515 RADIAL S 0 39 39.0 W RP 1219.18812 +638. 7691 20 19 CHORD S 65 39 47.5 W 16.9031 1199.18945 638.04634 21 TAN@PT N 89 20 22.0 W 21 INV N 69 20 22.0 W 118.6100 1200.55686 519.44422 22 RADIAL S 0 39 38.0 W DELTA 84 19 27.0 RT RADIUS 20.0000 TAN 16.1108 L-ARC 29.4347 RADIAL S 84 59 05.0 W RP 1220+.55553 519.67479 23 22 CHORD N 47 10 38.5 W 26.8492 1218.80711 499.75136 24 TAN@PT N 5 00 55.0 W RADIAL. N 84 59 05.0 E DELTA 8 07 04.0 LT RADIUS 435. 0000 TAN 30.8675 L-ARC 61.6316 RADIAL N 76 52 01.0 E RP 1180.77861 66.41679 25 24 CHORD 141 9 04 27.0 W 61.5801 1279.61654 490.03939 26 TANCPT N 13 07 59.0 W LAT & DEP -0.00394 0.00525 26 HCLOSE 5 53 08 10.5 E 0.0066 1279.61261 490. 04464 5 PREC = 1 T O 303456 Area = 110614.50 sq ft 2.53936 ac I impson En ineers Inc. CIVIL ENGINEERS AND LAND SURVEYORS N. 909 Argonne Road • Spokane, WA 92112 (509) 926-1322 • Fax: 926-1323 RECEIVED FEB I z 199e Signed I )ou & Ck jS7V/Se,. y OFFICE OF THE COUNTY ENGINEER Spokane County, Washington , January 24, 1994 MEMORANDUM TO: -1wfsao + Y~■ FROM: Deveiopment Engineering Services RE: Standard Drainage Language for Plat Dedication Project # F1 (4+0 l) Drainage easements, as platted and shown hereon, which are for the purpose of installing, operating and maintaining drainage swales and drainage facilities, as conditions of plat approval, are hereby granted to the public. 2} The property owners within this flat shall be held responsible for keeping open and maintaining the surface path of natural or man-trade drainage flow over and across their respective properties. 03) The property owners within this Plat shall maintain all water quality treatment swales ("20$ swales") and drainage ditches situated on their respective properties, and any portion of a 208 swale situated in the public right-of--way adjacent to their respective properties, with a permanent ground cover as specified on the current approved plans on file at the County Engineer's Office. The property owners may install approved shrubbery and/or trees, which do not obstruct the flow and percolation of storm drainage water in the 208 swale as indicated by the current approved plans on file with the County Engineer's Office 4} The property owner or his representative shall inform each succeeding purchaser of all drainage easements on the property and of his responsibility for maintaining surface drainage paths and swales within said easements Spokane County does not accept the responsibility of maintaining the drainage course on private lots within drainage easements or floodplain areas, nor the responsibility for any damage, whatsoever, including, but not Iumred to, inverse condemnation to any properties due to deficient construction and or maintenance of drainage courses in drainage easenents on private property. 6} Spokane County and its authorized agents are hereby granted the right of ingress and egress to, over, and from said easements for the purpose of inspection and emergency maintenance of drainage swales and other drainage facilities, if not properly maintained by the property owner, Spokane County does not accept the responsibility to inspect or maintain the drainage easements or drainage swales, nor does the County accept any liability for any failure by the lent owner(s) to properly maintain such areas. 7} If the property owner fails to maintain the surface path of natural or man-made drainage flow, or the drama Te Swale, a notice of such failure may be given to the property owner. If not corrected within the period indicated on said notice, Spokane County has the right to correct the maintenance failure, or have it corrected, at the expense of the property owner. RE: Standard Drainage Language for Plat Dedication Project #_L#b1+3> 8) Any building that is constructed on a lot in this Plat shall be set at such an elevation so as to provide positive drainage away from any drainage entry point to the building (including but not limited to a window well. a window unprotected by a window well, or a doorway). Said positive drainage shall consist of a miiuititirti slope of 3 % away from the building for a distance of at least 10 feet from the building. The lots shall he graded so that either a) all runoff is routed away from the building, and conveyed over the lot to a natural drainage Swale or approved drainage facility, or b) drainage intercepted on the lot is disposed of on the lot in au approved drainage facility. The approved drainage facility shall be constructed in accordmice with the approved plans oil file at the County Engineer's Office. Any revisions to the approved drainage plans must be approved by the County Engineer's Office prior to construction of said revisions. If there are continuous swales for water quality treatment (208 strip swales) on the Parcel: 9) A statement must appear in the dedicatory language of the plat that driveway access permits for driveway approaches to the County road system are required prior to issuance of a building permit. This approach shall he constructed in accordance with the approved plan on file in the County .Engineer's Office. If a floodplain occurs on the Parcel: 10) Development within this subdivision shall conform the requirements of the National Flood Insurance Pro ,,ram, and Chapter 3.20 of the Spokane County Code. The lowest floor, including basement floor, for any atrmwre shall be constructed in accordance with the requirements of the Spokane County Flood Tone ReguNuons in effect at the time a building permit is issued. Purchasers of property in this subdivision are watnied of possible flooding or ponding and the of the potential -requirement to purchase Flood Insurance. This warning shall be carved in each and every deed to transfer ownership of any and all property within this plat in the Area of Special Flood Hazard. 11) An approved grading plan exists for Lot(s) & of Block Grading must conform to said plait on file iii the County Engineer's Office. 12) Spokane County does not accept any responsibility whatsoever to establish or maintain ingress or egress across the flood plain area. If the Parcel is located in a watershed with major stormwater problems: 13) The plat is located within a drainage basin which has been identified by Spokane County as having stonnwzuer runoff problems. Since this Plat is affected by, or is a contributor to stormwater flows, the property owners, or their successors in interest, agree to participate in the planning and implementation of a toture basin-wide stormwater management system and/or assessment district. The property owners, or thei r successors in interest, agree to pay such rates and charges as may be fixed through public hearings, for Service or benefit obtained by the planning, design, construction, rnaintetaance, or operation of stormwater control facilities. pubrwdr.ingl24J a nY4 Triangular Channel Analysis & design open Channel - Uniform flow Worksheet Name: Ridgemont No.4 - 2nd Comment: Existing ditch, flow from S. to Ex' g . CB- Solve For Depth Given Input Data: Left Side Slope.. Right Side Slope. Manning's n...... Channel Slope.... Discharge........ Computed Results: Depth............ Velocity......... Flaw Area. Flow Top Width... Wetted perimeter. Critical Depth... Critical Slope... Froude Number.... 00:1 (H:V)Wl 3 Mr~► WfW Q . 00: 3 1 (H:V)* ~e„r~:tee areGar~ =S TAt" . 0 . 0 3 0 _ gns~ rf rs p~ 15 0.068 7 ft/ft ~s<s~~ ,vM 4,5'7 c-'s 11.00 c f s fs a j F' ? . 2-9 c- r RASr+J "LnNC G z-`17 CTS Co M~oNc7] T`aML d 0.75 ft tSS~nr, sG ca. c a~wy f r PeA r-) 6.'52 fps,/ 1.69 sf 4.50 ft 4.74 ft 0.'96 ft 0.018 0 ft/ft 1.88 (flow is Supercritical) ~}S ~E~ P41r►}~?~r,~+e 6F PRsUftl~ Ra,'ct7 Ar PsoGE- n"J' ~ Asa rh ~'a- ADtwn6 shcur It OF- (I- f DrmK DCFT-i = 1r 5 FT. 50 cpR _ E ~4-ow rN 7?{ i5 DITCI-4 WILL CUSS N Q~ NOI-i; I-H A-E> b t T► 01.3 A~ t4 D-17L : POGE-Mb"T- E7-ST NoFt X.E. ,Jop-K- 3S IFSd t'rtaW , 'r`1-iE CWk~aeli-c~E ssJB~rrrrr~- FOi~ 3~° ,~3n~~on3 W'LL 1~~4'-'pE M6xr- i~F-OXNN~cT.arJ.' cVT Trl~ q(isn" G t>iTc HC~.G. se~r~ E Za•~ sip ~r~ r ~ r?r7~~ [RL~-, a?P=°yp1-no~J wrLZ f►-~C1.•~+~~ DC+~uSrset7trl hld~er+C+'+Tror]~QCr~-r[3nJ open Channel Flow Module, Version 3.21 (c) 1994 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Cry ! g-O Y a v r [L7.~ = nC7 5 ° 5 5'0 2' L = 30 0' L13 d~ Lrs 77 45'06'17" = 70 9 7' 55.11 A = 15'45'23 R = 215 00' T = 29 78' L = 59.19° i. r ~ C] ] ~ 00 f 0 cc" C t L = 4505' 17 R = 100 00'. T = 41.53' L - 78 72' Z!, = 15°46'23° R = 185.00' T = 25 63' L = 50.9 3' 'r 10 i. ~e I ff . f N Vr A 30 foot drainage easement over that portion of the NW 114 of Section 25, T 25 N, R. 44 E.W.M. described as follows: Begin at the NE comer of Lot 3 Block I "RIDGEMONT ESTATES NORTH 5TH ADDITION"; thence N 55°33'42"W, along the Northerly line of said Lot 3, 60.15 feet to the True Point of Beginning, thence continuing N 55°33'42"W 33.30 feet, thence N 08°42'52"E 122.77 feet to the beginning of a curve concave to the Southeast with a radius of 215.00 feet; thence Northeasterly, through a central angle of 15°46'23", an arc distance of 59.19 feet to the end of curve; thence N 24'29'16"E 29.76 feet to the beginning of a curve concave to the West with a radius of 70 00 feet; thence Northerly, through a central angle of 45'06' 1T', an arc distance of 55.11 feet to the end of curve; thence N 20°37'01"W 128.56 feet to a point on a curve concave to the Northwest with a radius of 435.00 feet and a radial bearing, of S 16'39'45"E; thence Northeasterly, through a central ankle of 3'57'16", an arc distance of 30.02 feet, thence S 20'37'01"E, radial to said curve, 127 82 feet to the beginning of a curve oo mve to the West with a radius of 100.00 feet; thence Southerly, through a central angle of 45'06' tr, an arc distance of 78.72 feet to the end of curve; thence S 24'29'16"W 29.76 feet to the beginning of a curve concave to the Southeast with a radius of 185.00 feet; thence Southwesterly, through a central angle of 15146'23", an arc distance of 50 93 feet to the end of curve; thence S 08042'52"W 137.23 feet to the True P.®13 Situate in the County of Spokane, State of Washington ■ 1 I i I -Zhu deed is atatotm7 form for use In Mate of Washington only-- 4 WARRANW-6ED ' V, r~o - -The threats. L.A. rringle and °f fie Y. Pringle, husband and wife, L.A.'PrinEle being a " k' I ~ ° ~ 1^ •i • 1 i q F ~ ~L ~ y~ bachelor at all timed ;riar• to hiaimarriAge,to Effie K. Pringle of Verrtdale ; € County Spokane State of W.,13hingt.on ~ :i for and in consideration of fifty two thousand five hundred and n0/100 - - - - - - i7oliare. In hand pald, vonvey and warrant to A.13. Renz and Hild, ltenz, husband And wife t whose addreita is VerndAle, Washington F, the following described real estate. situated in the County of Spokane State of Wn-qhington: Government Lots 1 and 2 in 5,Actlon'30, Township 75 North, dianr;e 45 n-W.Y., °lso the North Ilalf as Section 25, Tb+a sttTp''25 North, Hnnge 144 , ::.4. H., -.xcepting thr,t' portion thereof more paRl-cu"Ia"r1ly described ns folkowst Beginning at a point oti the'north line of'anid aection'Yventy-five ("5),-thenoo,three thousand dour htnsdred four (3404) feet eist of the northwest cnrner thereof ; thence running south 260 grin to the center of rack mound one hundred fifty -one" and e/10 (151;6') feet; thence running south 51?/113rr east to the center or n rir tree forty (40) inches in diameter, one hundred sixty-four (V,40)) feet; thence south 59" 0 " east to A pine tree fourteen (14) inches in diameter vne hundred ninety-eight (10°) feet; thence'in a northeasterly direction four hundred thirty-seven (4:37)' feet to t pain. on the north line of said Section Twenty-five (25), ono thousand threw: hundred twenty (13' ) feet went of the northeast corner thereof; th7ce est on ~)ection line to tin yi..cu or t).•t-jrning. ot1 Ain~ng Throe hundred ninety-six {396 acres morn or lrsa. u elect tc 1?nsements And restriction of record; A mortgnge dnted April. 10, 1953, execute:i'►•y they prties hereto to the Northwestern KuturtI Life Inqur ince ' co. In '.hr princit>,al r+n.o„nt of 015000.00 which the grantees herein aosua•re nod Agree tb pay. 4 r ' i e . lei X 1 1 1 i 0. ~ I ~ n~ Dated this 10th day of A Aril 19 53 ~ r 1 x Fxcise Tax ea neat €stote Y Sara Amt rd o r ~ ~ ~l {~ralt rote M5. ) !on A i A,"r Cd Tions.~ . (Ii'ltnra.f1 (5cnl) BY (Seal) STATF•: QH WASHINGTON. ',1 r are. ~ _ County of Spokane J 1, the undersigned, a Notary Public in and for the nbfo a narn.ed-+ -l,v certify that on this 10th day of A f'ril ° L.A. Pringle and I:. rie 1". Prinrjea, hushAnd and prior to his mnrrin a to Efr~e H. Pringle. 922=2222 to me known to he the f'ndlt•idualp describeil in and w• h• that theIs[gned and sealed the same as their - pu rpb" tWp1 h 7entloned. r~ gkuqo&rmY hand and official seal the day and year. r • CI, C3 J 1;T~~ Z-5- t° ✓e Transamerica Title Insurance CO M,pany DRAINAGE EASEMENT A 30 foot drainage easement over that portion of the NW 1/4 of Section 25, T. 25 N., R 44 E.W.M. described as follows: Begin at the NE corner of Lot 3 Block 1 "RIDGEMONT ESTATES NORTH 5TH ADDITION"; thence N 55°33'42"W, along the Northerly line of said Lot 3, 60.15 feet to the True Point of Beginning; thence continuing N 55°33'42"W 33.30 feet; thence N 08°42'52"E 122.77 feet to the beginning of a curve concave to a Southeast with a radius of 215.00 feet; thence Northeasterly, through a central angle of 15046'241't, arc distance of 59.19 feet to the end of curve; thence N 24°29' 16"E 29.76 feet to the beginning of a curve concave to the West with a radius of 70.00 feet; thence Northerly, through a central angle of 45'06' IT', an arc distance of 55.11 feet to the end of curve; thence N 20°37'01"W 128.86 feet to a point on a curve concave to the Northwest with a radius of 435.00 feet and a radial bearing of S 16°39'45"E; thence Northeasterly, through a central angle of 3°57' l6", an arc distance of 30.02 feet; thence S 20°37'01"E, radial to said curve, 127.82 feel to the beginning of a curve concave to the West with a radius of 100.00 feel; thence Southerly, through a central angle of 45°06' 17", an arc}distance of 78.72 feet to the end of curve; thence S 24°29' 16"W-29.76 feet to the beginning of a curve concavi the Southeast with a radius of 185.00 feet; thence Southwesterly, through a central angle of 15'46'23"7A arc distance of 50.93 feet to the end of curve; thence S 08°42'52"W 137.23 feet to the True P.O.B. Situate in the County of Spokane, State of Washington. S~~ C4 WCA C L a 03'57'1 - R = 435.G r L = 30 02' a~ rn 10 45'06' 17 = <1 - 45'06'17" R 100 00' 7 = 41 53' L = 78 72' ayq C)v = 15'46'23" ~C ~°3 R = 21500' T = 29 78' L T 59 19' L = 15'4G'23 R = 185 00' i = 25 63' L = 50 93' 1 0 ; r z _ co C7 0, ! 1 i C a AUTO INVERSE START 1000. 00000 1000. 00000 1 1 INV N 55 33 42.0 W 60,1500 1034.01596 950.39217 2 2 INV N 55 33 42.0 W 33.3000 1052.84774 922.92848 3 3 INV N 8 42 52.0 E 122. 7700 1174. 20045 941.52 937 4 RADIAL N 81 17 08.0 W DELTA 15 46 24.0 RT RADIUS 215.0000 TAN 29.7827 L-ARC 59.1888 RADIAL N 65 30 44.0 W RP 1141.52560 1154.04735 5 4 CHORD N 16 36 04.0 E 59.0020 1230.74311 958.38666 6 TAN@PIT N 24 29 16.0 E 6 INV N 24 29 16.0 E 29.7600 1257.82619 970.72215 7 RADIAL S 65 30 44.0 E DELTA 45 06 17.0 LT RADIUS 70.0000 TAN 29.0699 L-ARC 55.1058 RADIAL N 69 22 59.0 E RP 1286.84113 907.01667 8 7 CHORD N 1 56 07.5 E 53.6939 1311.48942 1972. 535516 9 TAN@PT N 20 37 01.0 W 9 INV N 20 37 01.0 W 128.8600 1432.09664 927.16157 10 RADIAL S 16 39 45.0 E DELTA 3 57 16.,0 LT RADIUS 4,35. 0000 TAN 15.0174 L-ARC 30.0229 RADIAL S 20 37 01.0 E RP 1848.83115 802.43247 11 10 CHORD N 71 21 37.0 E 30.0169 1441.59053 955.60400 12 TAN@PT N 69 22 59.0 E 12 INV S 20 37 01.0 E 127. 6200 1322. 05670 1000.61 178 13 RADIAL N 69 22 59.0 E DELTA 45 06 17.0 RT RADIUS 100.0000 TAN 41.5285 L-ARC 78.7226 RADIAL S 65 30 44.0 E RP 1286.844$6 907.01624 _-1-4- 13 CHORD S 1 56 07.5 W 76.7055 1245.39495 996.02121 15 TAN@PT S 24 29 16.0 W 15 INV S 24 29 16.0 W 29.7600 1218.31187 995.68571 16 RADIAL N 65 30 44.0 W DELTA 15 46 24.0 LT RADIUS 185. 0000 TAN 25.6270 L--ARC 50.9299 RADIAL N 91 17 08.0 W RP 1 141. 62.953 1 154. 04491 17 16 CHORD S 16 36 04.0 W 50.7692 1 169. X55888 971. 18060 18 TAN@PT S 8 42 52.0 W 19 INV S 8 42 52.0 W 1.37. 2.300 1034. 01,310 950. 38888 19 LAT & DEP 0.00286 0.00329 19 HCLOSE N 46 59 10.2 E 0.0044 1034.01596 950.39217 2 PREC = 1 TO 216628 No Area 7~' 1'~Y ~~bn ~ n - _ s"'.' ~ : ^ rA• ~r •-r • r•:,, •r~- , ~►,~'f i ~ ' r ~ ~ ^i~ ` r . ,lw - a~~r ~ ~ _ c• ,r ~~r yyy --~.-~cg, _ - s r .Ffi ~-r ~ T ~ - - _ ' _ X ' 1 4 _ } . - ; ~~'y,a -c F u~ } • ~ • w 1~'~ ~u)5~ ~ r t" }'r-~.. ~r,' ,~tii er ,~~,dfS~ { 1' .n`~'"- jf~ s•,~•' i fl~F4 ~ C ~ ~j !J 5- k r`,~ , yr_ ; ,A µ , i i ~ :4•., y~~ r'"• ^'`s >1' , 'a 3 ~ - ~r., ' :5! ~ ` ~ , _ _ e f ±C- -8• "~'r,`-r•~ ~a~ jar 3~r ' _ `~+t - - - ~ Y~ .P n _'rx?4~~°~ F ;r ~ . - : v ~~;~.,~yy-- ~ E r;~i ~ 2 , rr 4Ni C Y ^s'S.e 4 sl r` `~1isx;~i.• , r%`y' ~~=i.~;P•`_iao ~y~ 5:: yj - ^`~e _ •pQ i L•-r','"~ ~r ,0 -s~ r',-':r4, =•si.r, 'sb:' C, _ - ^•r° ;C .y - - ~~R s ` -Fa. , ;arr~ r ~ . v -~.y y_~•;...,r, ,f_ °."c r iy t~~~.. n m x wR ~f} ~t~ - C. , ti ~ ~ J7a_,.%f P C~[ :s, '%dJ~y~ . . ,i I~ i~.` Si i•s ~~i~ f.~ s`~s ,i'.' _ •~Y '1.<. 't ' ~r ,E' r•,~o, 4v k, 'IF VIA •~f - •~';r: ~,~~i! ry.~"' , _ . ~~;!o: ,hy i; h ~i"~'r ti~.e: y T - f,,q~~~? ~a %~'~n"'.ry;~i a:C ~ fi,~i i;'t t•~.`~ r ' •>'r r ' . ~ s ~ ' •rl r~-' ~ xl~ ~ ~ .r,' ~•r''; h~y - r'.~ ~~•yi]f A-~,, t , k-° ~y _~f ~t~'~'' y _ r •-r ~ d"' TQ F•1"~;~,~~~' Frr - + 6 ' i} • i,Y3i„ Jr; ( , r T Af w ~a'",,~x YT ' c ~ 's~ N ✓ - ~;1;~ r _ L o-' a' ~ •...s r",~Sis: f ~ r. =ir`-F~p : ^~s.t• ri • r o ~ '4.~.r.~!s!~t • ~ '9~; ~ ~ ~ i; • •;•,Y+ ~p L~ eiw~ ~ .g ~+s s 3-~ 'L 1 0" / ° X ~ _ t s` ' ~ ; Y~. ^,h.es±''~ i ; ~ Lii~.e Y v ,a7..J x~ F;~ r. . } . l 'n. rte' rtl y e r` ' ° ` fi i - _s `;\11~5':.P-;;` - ' Z: .~„~w°~ 5`: ' y-+,,sr` ~ ,>~t-~a•,.~~ ~>r" 'i~~'""~~'~"'~ ~ ~wr,.°_ ;6w",#as k f ,:y a .i~>~'~`ca.'t _p . -o - • ~C'~ 4".f~ r s.. r - ,.R~ , 1C " ,lr: ~ s, J1•, N r r=~i~--,-f is"•''1~ _ ~ ~ 'i .'J - . ~ _ i.. r _ _ - _ - •.+p' 'r ~':,.;~i:.iy^," _ r•t i } yr'~'x-• r +P arJ: _ sT~.i~. ~ • ~ { 47k . •rrJ ,,•_~,~'Y~T}" , •'~~~ry~:,'a„ xis - G" r`+ , r . - =.s F, P - i. 7 - - 'jam cf :a:si. s' ~ ':f '~j ,M o„, ,i +'r.- - F3. 7 r _ ~ ~ d y _ - " ~f :-,~ca~r' 'J - 't °l~r~ /f Ali ' x r ` ; 'L s +"c? :~._r,4 1 S"~ ti~ All- E~¢r7 o-•~{•> ~ ~r.~~' " `7 ~r ~ ~ • . • - f . _ _ ' i• • r ~r. Jam. -'s' • _ - , r_ I _ T~ ~ °~~~i^4~~:~"• "'~•v *i ~,t'! ~1 3 _ _ r`~e Ir 4' n-rt +.~.~f •rY !4 rS q$ ~c"Y• nr 1 y.r'} ,1 n Y" 4~ z~. ~'►~'fy• ~4~°nhy~y.'''J :i,i;.'~hr r ~-•.IYa" .:.4 ~ ,r{ ~.•~r .f'r~ r ~ . _ F z'~-•~i Y`' 1 ( dew A_ -fs*"s wY'b~,(i• 3',a.Ck~"•''t t Y~* ''9F-,~`~. • „ - r~ - r"'" ~ el. r+.LZ y- T~7.. •~+'r~ • !rd•,r' .i' t? - aF`ra„_ s - i-r.3 t _ - • - ' Y~ `~s ° E - 1 wt+i~ 1 '_i. M~Pt' '.~~~i r ~ v a vp. , ' '~~r ~ s.. y` • r ~ p y ~J, ,r+r~~~ ~s ,ra,l• ~=f i - - j~ J~ ~ i~ 1 r ~T k, ~i~l.-" ii ~ r`t • °r r,~•~-•ki-'• i ~ y•{ , y°~.TZ,. A~'e+" ti ~ ' n•, • opt •s - , _ y ~ Js :.r. • - 4 :•r `'F- ~ :L' - ~ - ~ - , - • • ~ _ W - ~ - ~ - ma'r'`} ~ • , ,r + ~ ~ ;i o'"` ~~~.q~F n`+•~ rd~'- rye. " • • r" . ,w'3~.~ks' s,i. - a~! _ ~ ; ' t,~ ` z; ?;.,w~~ i'~,y~Y~., r,~,ff Rt, .µ,.T~-,..~i'y ~t • r • 'C~"~~ } .~y ~ ~ ~M1~,,~ 3: ,rrJSO"'•" _ s ~ , w .•,r~ ~t•-. i";4 ~ c ~;.z ~ - f9. ffffff... w'?kE,'~~Y. .F, ~'':•.~c'rr~"_ `r `f•: 4 - _ v'b _.rl'~•~i7r~•'4F•s•'+a~•?'" - A~ .js]~ ~j~h •S~Y• Y .~Ne L arw- F ^ ~Y yD~ ,r~~f• - r rGyk . ~ J.',fJ ~ , ~_t.. ^y 4•! T 3.. ~ rR ~ i ~ • N • ~ F p - ! h,~• _ , _ ,+i i ~ r _ 4 E A _ ti + 'trcr,^ - " ry `'r~.1~• - 51, - ,,{,1! ~x~'•-y; t -.:9 •~~`E^A ~ ~L` ',s _ P'"" ~ ~1~ `:~rY^r~~°~'~ i'r ~ Ate.: J # ~e~,,+b ^,.c ~ .~rr rs. _ • s - - - ~ ~ z''~rS Yi4 ~ y ~ 40 F .4a rte` tir,.'~-• } y ~f ~ s~ ~ J jh-1 ;kF y_ • ~ '~1' - ' • _ - 'kr, ry= 1 1 ,t.. j& - `i - +'a ",1~;,• ~"7, ~'rf~~+iL+T.2„-~ ~ ' y .vim,.°.~: - •f~- ~ ~ `~77 r ~ 1• 1t _ _ ~ 't' ir, - F ' - '7-Y1:Z' r■ r Sr• C- yM~~~~lre ^ i~' L}'Evr e ' r'~~c~~~~i ~ • ',n :`5'' e 9 • L = r ;e ~f:l-!rC^I .a „F 'c ._a , } , r .~`z,...~: •y'Y Je i • r o JP _ _ C ` _ - - z 3.` L9~r 1 f•~",',\ .a . - r'- = .y r Jrr ~4 Y ,a. ~ ~ ti ~ - - ' ` tip' ik~~`,) ~ Q®_ _ +U L•~ 1. - ' • - s L'~ r 4~. _ . z t a v ,t r, 4r ° r : ] oQ f.C r. E • r R?~ t'`;• ~7 L ~4 rl' 0 . r.. ~,o. x J: , "kA Air 45. •y Z K, ;~'i' nV ,;rr'_~h'ri r•m`a.,.,s'vF ; s, n. _ Ys%y Y' srt . r@rk k~ y ~~;'yr - - ' c ~ . rh>~.~!y„ ~ -0 ~ ~ ~ S. - • I .y9', y h 771, " ro _~`tJ-,i 3Y rtq'" ~ - ; - rs1~ a,f rcI', ~ ~ - _ _F r6 'ii yt •t, -lp,, 5 ,~,4 .f .o r r J a t - -,,4 r" .n . k..~y .L°• a6 r ,~a;%, ,r~*a~sv ^1'1 •A ru,'~1:N'i '~,••_x~.t,4`rr'<~ fb~,4 r'-. ,,n~t~d••v7;.r .~s'r~~.~~ "~.'._"~yd`~°~- e F-\ OFFICE OF THE COUNTY ENGINEER SPOKANE COUNTY, WASHINGTON TO: BILL JOHNS FROM: DAVE BERTO D_6. DATE: May 31, 1994 SUBJECT: BOND ITEMS P1684D Ridgemont Estates North 5th The bond for the above mention project is for the following items: 1) All the items on the approved road and drainage plans with the exception of the sod for the "208" Swales. c:\wpdoc\dave\memo\items i I/ . % S P 0, K- Ar1J E OFFICE OF THE COUNTY ENGWEER • Donald C. Hormann, P.E., County Engineer C iisY.innror, €rtuv _.ia1 Say =nr_s Sanlk A05 Sorarue Ave. Covc<ane. wa. 99206 [7 U, NT 'T' Y A DpvISION OF THE PUBLIC WORKS DEPARTMENT Dennis M. Scott, P.E., Director RE: Ridoemvnt Estates North pith Add P'.684D Tupper Deve 1 ooment Dear Sir, or Madam Please tae advwsed tr)at the Savings Assignment •4 j'jRT ~,06- 80011?9-L ~!yc €Fsa O'r your comp riv ZS surety for of roads ana as' ociateCi nage }aci Iit 1es for the adore mentioned plat. ,cited iq,--,.!J IS. iT34. in ' h0- RMI C 4T1 , !"S IT1,Ry now be -educed to 511-000-'00 (eleven thousand U. S. dollars). 1 P 'N'ou have ranv a6.€est -Lons. feel fr,,2e to cal E o7 tr° "Cr? Very truiv yours, Ronald C. Hormann. P. E. Spokane Caunty Engineer David A. Derto 1026 W. Broadway Ave. • Spokane-WA 99260-0170 • (509) 455-36Q0 FA-X. (509) 324-3478 TDO: (509) 324-3166 1ST BOND REDUCTION PROJECT P1684D RIDGEMONT EST NORTH 5TH ADDNAME DAVE BERTO DATE 09--Aug-94 DRAINAGE ITEMS UNITS OUANITY PRICE COST 1) Drywell - Type A @ 10% EA 0.2 1200.00 240.00 L) Drywell Type B @ 10% EA 0.1 1600.00 i60.00 3) Grate - Type 1 EA 300.00 0.00 4) Grate Type E EA 330.00 0.00 5) -Grate Type 3 Cc, 80% EA 2.4 300.00 720.00 6) Dackf i l l For DW @ 10% CY 10 15.50 155.00 7) Concrete Inlet EA 700.00 0.00 8) C. M. Pipe 10" Dia. LF 22.00 0.00 9) C. M. Pape 121" Dia. LF 25.50 0.00 10) C. M. Pipe 15" Di a. LF 27.50 0.00 11) C. M. Pipe 18" D i a. LF 29.00 0.00 1E) Precast Manhole EA 1450.00 0.00 13) Solid lid EA 300.00 0.00 14) Ditch/208 Excavation @ 80% CY 60 10.010 600.00 15) Sad SF 0.70 0.00 NON STANDARD DRAINAGE ITEMS 1) Filter Fabric Lining For 3 D. W. @ - 101 LS 35.00 8) Energy Dissipation M. H. & Rap Rap @ 100 LS 3000.00 3) Offsite Ditch & Access Road @ 100% LS 500.00 4) Type 1 Curb Drops @ 100% EA 1 200.00 ::00.00 ) 0.00 6) 0.00 7) - - 0.00 - - DRAINAGE SUBTOTAL 7610.00 16) Monuments @ 100% EA 1 180.00 180.00 17) Barricade LF 30.00 0.00 18) Street Signs @ 100% EA 1 80.00 80.00 OTHER SUBTOTAL 260.00 GRADING, SURFACING, CURB, AND SIDEWALK 19) Rough Grade @ 10% 20) Top Course @ 10% 21) Base Course 22) Asphalt Concrete @ 30% 23) Curb Type A @ 10% 24) Curb Type B E5) Curb Type R 26) Sidewalk NON-STANDARD ROAD ITEMS 1) 2) 3) CY 44.13 10.00 441.30 CY 22.07 14.00 308.98 CY 14.00 0.00 Tons 45.24 44.00 1990.56 LF 58.5 6.60 386.10 LF 7.90 0.00 LF 7.60 0.0'0 SO YD 16.40 0.00 0. 00 0.00 - 0. 00 - GRADING AND - SURFACING 3126.94 0 6 ~ J - CFO 0 'OK) GRANT) TOTAL 107996.94 Inter-office Comm OFFICE OF COUNTY ENGINEER SPOKANE COUNTY, WASHINGTON Dot , d92;;~ G ~ Form 327-C R r' BOND E S T I MA_ . E F`RO ES T RIDCEMON T JECT'p IGSAD NORTH -3 T H +AT ONPME_- DAVE-SERTO_+ __-DA T E-- 2,5-Mar•-14- r - DRAINAGE ITEMS - UNITS OUANI T I--'RICE Cos- ? 7 Drvwe I I - Tv oe A l~ EA E 1200. 00 2400.00 ' Drywell - Type B [e EP 1 11_; 0V1.00 0.0171 16 3) Grate Tyroe 1 EA 33-10. 010 0. flu-) Ai C=rate Tate 2 EA .130.00 0.00 5) Grate - Type C SQ Ea .D ,:00.00 900 00 6) Back f i 1 1 For DW d CY 1017) 15. 50 1550. 00 7) Concrete Inlet ESA 700.00 0.00 87 C. M. Pipe 10" Dia. LF 0 0. OIZI 9) C. M. pine 1,2" Dia. LF ~=15. 5o 0. 00 l0) C. M. P i a e 15"' D1, a. 27. 51Z) 0. [;-'0 11) G. M. Pi,ce 18" Dia. L~ 29.00 . 014) Precast Manhole EA 1A°o. 00 0 . vi 14) IC) Solid lid EA -10 .S0 0. 4 0. 00 14) D, tch/-E08 Excava-~ian ~Q CY 75 1 00 750 . 00 157 Sod SF 0.70 0.014) NaI ; TIPNDARD DRAINAGE ITEMS Fi1ver+Fan:-ic Linino-For- ~-M.H. /0 LS 35o.00 ) Energy Dissipation M. H. Ric Rao 100 LS 3'000. 010 a) Ot-=site Ditch & qc ess go ad 100 LS 5Q va.00 4) Tvoe 1 Curb Oroos I00 Ea 1 a00. 00 200. 00 5) 0. 00 0.00 DRA I NACE SUBTOTAL 13ZE12-1.00 16) Monuments _ too c.~ 1 18 . ' ~-1 i 30. 0 l tt) CLY''I~iG'~sde Lr ;iC~l1(~ 0. 00 # 13) Surer. Si ons 160 E.q : 30. 00 80.00 - OTHER SUBTOTAL E'=O.00 °SRAD I NG, SURF-ACING. ISIG. CURB. ANn E I DEW+AL' 19) R01.10h Grade CY 441..- i 0. 00 44 Z. 6/-)O 20) Too Course CY L: O. r 14-00 :3089. SO 21) Luse Course CY t4.00 7. 130 22) Asahalt Concrete '20 Tons 150. B 44.00 6635.2-Z 2Z ,l C,.trb Tyce A 6 LF 58 j 6. GO 386i.00 2-47 Curb Tvpe B LF 7. 90 0. 0 -1 ' 26) idewalk S - 5O YD 16.40 - ~0 NON-STsANDPRDTROAD ITEMS I ) I 1. 00 ~r7 0.00 - - - - - - - - - GRAD I NG AND SURFACING 1191? - 00 ~ } ~ Cc-C - GRAND TOTAL 1 , 5~ca. X10 PRCJET NAME: Ric g,.=IJ E i.ti - INSPWMR.6 DATE: CONTRACTOR AND/OR SUBCONTRACTORS: F F-lier, Rac-, Ll1a•llj.4s 4/e ,r F S P Q~ A, N I" OFFICE of THE CouNTr ENGINEER Ronald C. Horniann, P.E., County Engineer WAsr-. ngton !'+1i_[t"-tat Savwnn-i an€a or°ao.--,e Ave. 30014ane. Wa. 992IZ16 C C7 u N -r ~ A DIVCSION OF THE PUBLIC WaRICS DEPARTmEN7' Dennis M. Scott, P E., Director RE.- Ridgemont estates Nlosrth 5th Add P -2 G 4 D T+_ipper Dive l ooment Fear Sir' or Madam: 'Please be advised that the Sav;.ngs Assignment 4 MR I 506-- 800199-1 I45LiF?a UY ;ion„{r comp'anv as 'sIjr:?tt' for "t'1.atal lat orls of roads ano as soceateo araznage iit~es for the above mentioned i31 lt. ;~ci'1 e Irgav i8. 1' 94. zi3 :}°f? clirr'°n;: .~r~{Y~_iT7`G C]i- "P+:~a.. ^S~r'~1•t~.'~~0 iic~ty now be reduced t-2 511,000.00 (eleven ahousarld US. c1013ars) If you have ant! al-testions, feel free to call riitr olff.c.e Yery truly yOLirs, Ronald C. Hormann. P. E. Spokane Count,,, Engineer OL/4 - David A. Bert o Plat C0111P? xanCe lArVeyor 1026 W Broadway Ave. - Spokane-WA 99260-0170 • (509) 456-36.00 FAX. (509) 324-3478 TDD (509) 324-31616 P1 ` 6~y4D RIDS _ r cT P M DRAxIV _ _ E ONT EST _ OND R=DU^ 1) Dr'~'WP G~ ITEM`,' NORTH r ` _____~TION GrY4jell _ ryoP A _TN ADDNgM 7 r'a t e _ T v 0 10': DAVE Ghat r`'oe A iz 1 pr.• _ PERTO Gr,at e , Yoe G 1 UNITS DATE - DoE ~qA ~r► r~ry OG`A co c~ l r sO•, EJ) ►'crete FO}' DF~ c" 1E PICE ` C. M. P, I r l e t 10% G. 1 04~ C. r; "Lj° 10„ EA 160~a. 00 t=4G C,O S T p, 00 1 0) C. 1►7, Pe 1 „ i a. Eq V'l'!0. 00 160. 0 } C, n; . l ° e Is" -,a- CY E.4 ~ GC^•. i 0 1~) Fr,ec ~A 1g„ D1 a. EA 10 200, 0 0• k'+0 i a. LF 1S, clc? 7~0. 00 t") aYt Alanh° D 14) S. Ci:d lid l E 700, O~ 1 ~ •e'~' D ? t LF 0 1S) er'/i0 0 SOd g Etc vati LF LF, ,~C•' 00 0, 0e" so 0. ON ND _ g0% EA Ci, 00 ~ 0 • AR_D DRA `9, 00 0 0. el 0 c` l L F r' F i AGE I rE S _ c y 1 ti S0, 00 6 p) 3) O 'tip Di L i r, ' - _ 1, 0, Ok. 0, 00 00 4) 7Yr~e z~ DjtetAatiar hl, HOrt ` D•, 0-70 IN f- r-4. (a et 6) zr'~ LrO~, QL~ s R°ad SIC Ram 21J I r~ 0'0 LS - _ _ 00 LS "•I 1 '1K10• 16' ~ L 00. 00 X 500, 00 „ 0 r, c,: i L o ade 0% _ e. tr eet S - DRAIAq 0. 00 X00,. P TO TAL 0. 00 CPA DING. LF 761 - - 1 180 0' • 00: SURF _ EA . 00 ROU ACING- OT _ - 1 30' 00 i $ fit, - , `1) T°P G AND IDLwA _ SI,'gTOT' - g0' +c?fit 0.00 CQitt"'ad e @ 10~ - S HER CE} Pa s e Co S e to 1 kl% ~l; A SO. 00 QSPh arse Curb alt t `'Oncr,Qy C 0 Cr~r,b SDP A 0 Of 40% I b "0y, Y - ,`6) Curb r YPe P. 1 CY 44.1 Side YAP R CY EL, 0~ 10, ~~0 Walk TO,. 14. . 00 41 . _ ` S- ~1VDgRD ROAD 'IT LF Sg, 44, g EMS SC LF 6-60 01 199 -qL O-SE D 7 , g0 10 7-6o 0.00 16-40 0. 0 0 0. 00 AND _ 0. 00 SURFACING 0. 00 GRAND T O rAL 21 ~ C . 94 • 94 OFFICE O F C OUNTY E Inter_o f ce C0n' SPOKANE COU" wNGIN T~ n;~Q yon ASH/NGT pN - , D Fro Sobs ~ Lam- ~ . I96 ~i t For327 BOND EST I MP T E EST R I DGEMONT ,P 1684D PROJEC T NORTH^ 5TH -AC713 hlPME-- DAVE-BE':?`f'0-- ---DATE- J~'laz_54 - - T r DRAINAGE ITEMS IJN 17S OUAN I TY 1='R I CE COST 1) Drv'we 1 1 - Type A J0 ' ' EA L 1 1200.00 0 vl 16 0 2400.0141 1600. OU y pe S [eo 2 ) Drywe 1 1 - T EA EA . . 300. 00 0.Q 3) Srat e - Tv oe 1 EA 330. 017) 0. 00 4) Gr,~t P Tyne L ;=A 3 300.00 13000.00 Grate - Type 3 80 6) Backf} 11 For DW 10 CY 100 13. OQ1 IS30. UU 7) Concrete Inlet Eel 700.00 O. 00 8) C. M. Pipe 1V)" Da a. LF ="2. 00 0 - '411D 9) C.M. Pioe 1E" Dia. LF 2, 5,5Z) 0.00 10) C. M. Pipe 15" Dia. LF ET. 50 0. f7le 11) C. M. Pi oe 18" Dia. LF 29.00 0.00 12) Precast Manhole EP 145 0.00 0.00 13) Solid lid EA 300. 00 0. Q) 0 14) Ditch /208 Excavation C'd 75 10.00 750, . 0 0 SF 0.70 0.00 15) Sad NON STANDARD DRAINAGE ITEMS -Filter-Fabric Lininra -For m M. H. /0 + LS 350.00 e) Enerpv i]i ssiRat z an M. H. Rio Bars 100 LS 31UO.10 3) Ofrsite Ditch & Access Road 160 LS 2500, 00 4) T,/oe 1 Curb Droos 100 EA 1 200.00 E0~~• 00 0.00 5) 0.00 DRAINAGE SUBTOTAL 13250.00 16) RMrsn um ent s- [o-o-- EA 1 151. 00 180.00 1 Sarr• i cart a LF ;O. 001 0. ~'_0 18) Street Si ons [O[~ Erb 3te. 0 _-----HI----------_-------- OTHER SUBTOTAL 260. 00 ---G,F)AD I NG, SURFAC I SIG, CURB, AND E I DE'WALK 19) Rough Grade ~0 CY 441.3 1 L). 00 441 u. 00 20) Tura Course yo Cy 3:20. 'r 14.00 3089. 810 E1) Base Course CY 14. 00 LI). 00 LE) Asohalt Concrete 20 Tans 150.8 44.00 6635. aO 23) C,-trh Tyne A l LF 595 6.60 3861.00 ' 24) Curb Tvpe R LF 7.90 '21, 0~ t L!= r.60 ...o E6) Sidewalk SO YD 16.44 0.00 NON-STANDARD ROAD ITEMS - -----w_---- 0- 1) '~..7~7 3) .00 4) GRADING AND SURFA CING 17999. - ~ } ~ ~ C GRAND TOTAL 31,509.00 OFFICE or WT EM s a Go MINIP0412117 MM AJIMME-ts PRO IM NAI1-: f5i. ALcik ,~A I~ INSPEL' TOP,- . S rrrr, ks DATE: ~I z/s 4 CONTRACTOR AND/OR SUBCONTRACTORS: Flied Eaco"j .L1a,44p1owg. ,r PYA A-W PURGE maxs OFFICER or THE p ox-c- E PR©JECr NAME: 11 INSPF,C'MR:.SL-ro.,iks DAB: a/zI-gLi 11 CONTRACTOR AND/OR SUBCONTRACTORS: Grp ►ahtq. ilefy`e r • ` % ti RA a. •f`i, r_- - , s 7 ri e OFFICE OF COUNTY E;NGhNEM SPOKANE COUNTY, WASHINGTON Inter-office Co unicati n, x From „F Subject- - - - `z - - y~ 1- - Foim 32,7-G R. 7 errri~, ~+..t5ta` r +a ~f; 'i,'a hs :~ys, - - ' 1r.lOCj 'Vtw' 'S•r~ ~~~_g.. LxY~" rY rl ri y+~ fJr t~ S P C7 Y< A N E G Q U IT 7' Y C1MCE 4F THE CouNTY ENGIItiFm • Ronald C. 1-lormann, P.E., County Engineer A DNISIDN of THE Pvauc Wom DEPT Dennis M. Soott, P.E., Director December- 6, 1994 W,ISIIingt ran M1Jt «al SaV ITIY y R+; Tlk E. 12005 Sprague Ave SCE.- Rid€gemont Estates Norrh tith i-iddit'zcn f-`16Ls117 i upper, Development iyear Sir ❑r° Madam'. Please be advised that Savings Assignment #tMR1: 506-90019--1 issued by yo(w company as +SIAIsety for installations o 'roads. and associated drainage facilities for, the above mentioned plat, dated Kay 18, 1'394, -.n the (e1.rrrr nt aMOIJTlt of= $11,000.00 may a°ovi he released. It 'j`olt have any R3uestioris, fee free to c.R11 our off%L-e Very truly yours, Ronald C. Hcot'f{l,inn, [-.E. Spokane County F°nglrrLIerR k 1--) 52 .r- Uav' d 1-,. soy-to I-'ia 6.r[ onr+1? ~t-r~ ' utrvcycr" 1026 W. Broadway Ave. • Spokane, WA 99260-0170 * (509) 455-3600 FAX: (504) 324-3478 TDD (509) 324-3166