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PE-1809 PARC CENTRE DRAINAGE REPORT - ~ INLAND PACIFIC ENGINEERING, INC. ~ , r. - _ - _ ~ ~ ~ . ~ . ~ i . , RECEIVED SFOfGRNE COUN`fY EN3iNEeRS OFFfCE 15 W OFFICIRL Pl1BL"JC pQCUMENT QRIGINAL. . C4NSfiRUCTIDN Pi..ANS ~POKMECWN1YENGfNEER PRDaEcT#: ~og aArE AccEPrEo: ~ -9-~aO- 9S AGCEPTANCE EXPlRES: PRO,]ECT LANE MILES Pl18LIC; PF~OJECT LANE MILES PRIVATE: CONSTRUCTIQN DOCUMENTATiDN AMD CERTIFIEQ RECdR6 DRAWING3,'AS-BUICiS" ARP REC}UtaED PRIGfl - 10C1?UN7YACCEPTRtVCEAND ESTASUSHMEMC►FTME U1-FICft51 F-'~JA'LIGLI:)Clf^,4~N7 ' RnRDS AND DRAINAGE FACILITiES FDR MAINTENANCE, SPOHkNE COUNTY ENGINEER'S QFrIi E PERM4TRE(]IJIRE[7! (509)45&3600 NOYIFY ~'ERMIT ENGiNEER 2 BLJSiNE85 RRY5 PRrnR ro coNSrRucrIaN PRD,!~C7 a-,..p- L, 9 SIJBMITTAL 4 I RETURN TO COUiJTY ENG1NEER SPOKANE • CQEUR D'ALENE I ~ DRAINAGE REPORT for the Parc Centre FUD P1at Spakane County, Washingtvn December 1997 The c~esign emeSh~wffi in this sGf nf plans a d calculativns con~fvrm tv t~e appiica~le ed~i~ic~~s ~r tk~e Spakae Caunt,y S~and~rds for ' oad aand S~vver Const~stiun and t~e ~po •~e ~c~uni,y ~G~idelines for ~t~rmwater anage~en,t. A~~ design de~ia kaars havc becn a~~d by the Spokane County ^n~ineer. ~ a pru~e tY~+~SG ~IaIi5 (ca~cul~tivnstrucMnn . This rep4rt has been prepared by Susan K.1VIurphy, E.I.T. of Tnlarnd Pacif cEngineering Comgany under the directicrn af the undersigned prafessional engineer wlaose se.a1 and signature appear bereon. I-' ~I o~ wAS ~s ~ - ~ j i3037 ~ 0 ~taNAL QMRES OSJi 11lilb Richard L. Maspn, P.E. DRAINAGE TECHNICAL REPORT for ffie - PARC CENTRE PUD L7ECEMBER 1997 - • Frepared #'or: Ken Tupger, Windmere Realry 12929 E. 5prague Avenue Spokane, WA 99215 Prepared By: Iniand Pacific Engineering +Company 707 W 7th Avenue suire 200 SFokane, WA 99204 (509)458-6840 Parc Centre PUD 17rrxinage Narrattue GElVERAL Parc Centre PUD Plat is a6.30 acre development of 22 siragle family residential lots lacated north and vvest of the intersectivn of 12th Aaenue and Pierce Raad in the Spvkane Va11ey wifihin Spvkane Gaunty,Washington. The site is currently Wacartt with field grass and fallvw fields as the predvminant Yand cvver and vegetation. Single family residential develQpment lies to the sauth and east. A aicinity and Tvcation map have heen included vvithin the technical section of this document. PURPGSE The purpase of fhis report is to determine the extent of storm draanage facilities wtuch will be . reguired ta dispose of the increase in starmwater ranaff created by the develapment of the Parc Centre PUD plat. The startn drainage facilities on this praject will be designed to d'aspose of runnff from a ten year design storm far the Qrrsite basins, and the ffty year storna event for basins with offsite drainage, as required by the 5pvkane CQUnty Guidelines for Stormrvater Management. This development is within the Aquifer Sensitive Area of Spokane Cvunty and is subject tv '20$' requirements. For this prtaject, the 1 0- and 50- year curve from the Spokane, Medical Lake, Reardcan, Cheney and Rockford intensity curves was used, as we11 as the SCS iso- plravial rainfall curves. A1VALYSIS ~ETHODOLOGY per the Spvkane Cvunty Guidelines far Stormwater Management, the Rationa1Method, which is recommended far basins Tess than ten acres in size, will be used tv detercnine tk►e peak discharges and runaff vvlumes for all ansite basins. FR(iJECT DES+C'RIPTIC)N The Parc Centre subdivision is lacated 'rn the SW 114 of Sectivn 21, T. 25N., R. 44 E.,'W,PuT. within ;pvlane Caunty, Washingtvn. T'l)P~GRAPHY The existing site naturally dxains to the north and west. Within the plat the natural topography - vaas used as much as possible to route storm drainage. Uue to the flat slvpes encountet'ed, no concentrated pre-existing flaws were observed nvr were there any signs t,hat anything other than sheet flow and ground absaa-ption have occurred on this site. The general s1opes within this plat Ina'and Pacific EngiraQering Campcrny p 1 Purc Centre PUD Dminage Repon vary frvm flat ta nearfly flat with the maximum existing slvpe at 0.0 l ft.lft. For development Purpvses as stated the natural slaping was used far design and is mainta3ned as p4ssible throughaut the prvject. S!]ILS As can be seen from the accomparaying soils map frorn the Spokane County 5oils Survey as performed by the SCS, the site cvnsists of ane type of soil within the Class B type. This svil tyge is described as follvws. McB - Marble sandy loam, 0 tfl 8 pereent slopes: Soils wathin this soil ty}ae are excessively drained svils of moderately rapid permeability, with a surface 1ayer vf loamy sa.nd, lvamy caarse sand, or sandy 1oan and a subsoil stratum of coarse sand. They formed in sandy autwash under grass, shrubs, and scattered pines. Surface runaff is slow, and #here is ti#t1e or nv hazaurd af erosian. Staokane Countv Guidelines for Stornnwater Mar►aaernent indicate this ta be a 5ai1 Crroup Type A and pre-approved for drywelY instaLlation. . Hyrdrotagic Sail Classicatic+n - A DRAINAGE NARRATI VE fJff'site There is a single basin, labeled Basin "iG", vvhich includes some offsite flow. Basin "G" will be analyzed using a 50 year storm event. Onsite As this plat is within the aquifer sensitive area of Spakane County a11 ansite drainage will be callected..and treated using the "208" runaffmethad as described in the Spakatie Corxnty Cruidelines for Stcsrmwater Management. To facilitate this artalysis the Parc Centre plat was divided intn 8 permarient basins (A thraugh I-). Tab1e 1 Iists the basins and pond cvmbinations for easy reference. 7nland Facic Engineering GonVu,rry D2 Parc Cerure PUD I7rrrinage Repart 'I'able Nv. 1 ' eigh~ted Basins atal A~+ea Emma MY'Alffi)j ~~~fAC) 156i0.58 4.0I0A 4.15 A 25, B 28,17010.65 0.0l0.0 0.15 c 36,88310.85 692910.16 0.29 1] 48,1 0711.14 S 72610.13 ~ 0.24 E 65,17211.56 10,570f0.24 0.27 k' 5867l0. 13 348610.08 ~.6 X G 60,42011.39 f 23210.14 0.23 H I 33,51510.77 I 942514.22 1 0.36 "208 L.'a1CTllGd`1io,iZS Within each basin the streets are-divided into sub-basins by high and law rroadway grvfiles. These facilities capture upstrearn stonrtwater runaff' fram the impervious street surface and direct the runoff intv grassy '20$' ponds. As shawn ora the'2a8' calculativn warksheets included, the '20$' storage volurne provided is adequate ta perfarm '248' Creatrnent for the rrznaff created by the first half inch of rainfall. - Curb Tnlets and Catch Basin Calculations It is necessary to check the adequacy vf dhe curb inlets, inlets ar catch basins provided tv divert the runvfFfrvm the gutter inta the'208" pands. The curb inlet calculation sheet included shows the required lengths of curb openings, as well as the adequacy vf the inlet grates nr catch ba5in grates. DRAIIVAGE C"ALCU.LATIaNS SUMNfAR Y Calculatians haVe been included for Drainage Basin consideratians such as Peak Flaw, Time of Concentration, "208" sizing, drywell xequirements, inlet sizing and curh inlets, which are sumrnarized belvw with tlhe remaining caIculations i'11CIUdeCI kl~ ~ppe11dPX. _ With.in the calculativn section and where it has been determaned necessary for clarity, several Inlanrt Auei;fic Engineering Gampatty D3 Parc Centre PUD Druincrge Repon sketches, as we1l as details from the plans have beera incarporated to deinvnstrate assumptions and concLusi4ras. BASIN DESCRTPTIDNS Basins A throngh H Within this plat, and due to the genera1 geographiG features, seaeral basic assurnptions were follvwed and can be used to describe each basin. First, due to the relative tlatness af the plat aiad groject vicinity, minimurn road grade is limited to 0.0050 ft.lft; secand; pnnds wi11 be vfthe lot pond cvnftguration; third, porads wil1 be used along the 12' Avenue frantage to take advantage of the 10' area between the curb and sidewalk, eliminating the need far additional structures necessary in the case af dtyvvells being located rtaore thata 8' beyvnd the curb line. All of these steps have been used in Wariaus hasins throughaut the drainage design of this project. T'here are two basins, A and Bwhich have been analyzed in the predeveloped and deveiaped condition to verify that the developed fdaaw is less than the predeuelaped flow. Basin A includes Lvts 16 ar►d 17, Black 1, vvith a privake drive serving both lots. Grading of the lots is anticipated to Fv11vw the natural tapography, wh1Gh floVGS 50LlEh to I10Tth Off fiYle plat. TL1pDgraphy W&5 d1Qt gathered affsite in this area, but the available contnurs indicate flow from south uf these lots to the nvrth as wvell. No increase in flaw is anticipa,ted due to the pa.ss thrmugh flow. Basin B inclucEes the back half of Lots 1$- 22, Block L This area's natural slope directs flow to the north, away frvm the frant yards, toward fhe plat boundary and is therefore not included in any of the vther basins. Wittr the "C" factar dropping frvm 0.30 for the undeveloped state to 0.15 for the develaped state due to landscaping, there is not an anticipated increase in flovv in Chis basin as well. Na treatment ps requgred in these circurnstances. Tnland PaeiJfrc Ercgineering Campariy I}4 Furc Cenare PUD DratnageRepart Table Nv. 2 - Pvnd and 208 Basin SUUnmary ain ~nd ZU8 Ve 0$ u1u e o~d iz ~ ells u~ired ~ o id d~ u~i~red c C 289 335 25' x 24' 1-"A" D I] 239 319 Irregular 1-"B" E E 444 538 Jrregular 1-"B„ F F 145 193 Irregular 1-"A" G G 260 298 Irregular 1-T" ~ H H1 45 111 7' x 25' - I-I H2 50 111 7' x 25' - H H3 6$ 111 7' x 25' - H H4 59 111 T x 25' - H HS 58 58 1.6' x 37' 1-°`B" ~ Based on {hvttoen aeea}{.5} +{perimeter}(,375); 3;1 side slvpes, .5' depth TyPe A is a Spokane Standard Drywell - Sing[e Depth, Capacity 0.3 cfs Type B is a Spokane Standard ❑rywell - pouhle I]e,pth, Capacity 1.0 cfs lnlarut Paca;fic Engrrreering Cprnpmay D5 Parc Centre PUD Druanage Report APPENDIX Inland Pacific Engineering Company D6 Parc Centre PUD Drainage Report WEIGHTED`C' CALCULATIC3NS Weighted Runvff Cvefficient Calculativn Project: Parc Centre Basin: Predeae@oped A IFE Jvb 97116 7vtal Area (acres): 0.5800 Desigraer: SKM Imp. Area (acres): 0.0000 Date: 1 1I1$ Grass Area (acres): 0.5$00 Imp. Area "C": 0.90 Grass Area "C": 0.30 (Imp. prea)(Imp. "G")= 0.0000 (Grass Area)(Grass "C'-)= Q.1 740 0.5800 0.174(] . Weighted ,~C"= 0.1740 0.30 0.58C10 Weigh#ed Runvff CoefFicient Galculation Prflject: Parc Cen#re Qasin: Derreloped A IPE JQb 97116 7Qtal Area (acres): 0.5800 Designer: SkCM Imp. Area (acres): 0.0000 pate: 11118 Grass Area (acres): 0.5800 Imp. Area "C": 0.90 Grass Area "C": 0.15 (Imp. Area)(Imp. "C")= 0.0000 (Grass Area)(Grass "C")= 0.0870 --~~~o~------------------------------- 0.S80(] 0.0870 Weighted "C"= 0.0870 0,15 fl.58f10 1Neighted Runaff CQefFcien4 Ca'ecuTatian Project: Park Centre Basin: Predeveloped B 1PE Jvb 97116 Tvta1 Area (acres): 0.6500 Designer: 5KM Imp. Area (acres): 0.0000 Date: 11118 Grass Area (acres): 0.6500 Imp. Area "C": 0.90 G1 ass7 F •1 eG{ A1C91. 0.30 (Imp. Area)(Imp. "C")= 0.0000 (Grass Area){Crass "C")= 0.1950 D.fi500 0.1954 Weighted „C'°= 4.1950 0.30 0.65flL1 Weighted Runoff Coefficient Calculation Project: Park Centre Basin: Developed 6 IPE Job 97116 Total Area (acres): 0.6500 Designer: SKM Imp. Area (acres): 0.0000 Date: 11/18 Grass Area (acres): 0.6500 Imp. Area "C": 0.90 Grass Area "C": 0.15 (Imp. Area)(Imp. "C")= 0.0000 (Grass Area)(Grass "C")= 0.0975 0.6500 0.0975 . Weighted "C"= 0.0975 0.15 0.6500 Weig'hted Runoff Caefficient Calculation Project: Parc Ceratre Basin: C IPE Job 97116 Tvtal Area (acres): 4.8500 ❑esigner: SKM Imp. Area (acres): 6.1600 Date: 11J18 +Grass Area (acres): 0.6900 lmp. ►4rea "C": 0.90 Grass ►4rea "C": 0.15 ('Imp. Area)(Imp. "C")= 0.1440 (Grass Area)(Grass "C")= 0.1035 0.8500 0.2475 Weighted "C"- 0.2475 0,29 a.8500 Weighted Runoff C❑efficient Calculativn Frvject: F'arc Centre Basin: D IPE Job 91116 Tatal Area (acres): 1.1000 Designer: 5KM Imp. Area (acres): 0.1300 f3ate: 11 J1 8 Grass Area (acres): 0.9700 Irnp. Area "C": 0.90 Grass Area °G": 0.15 (Imp, Area)4Imp. "C")= 0.117[} (Grass Area)(Grass „C")= 0.1455 1.1000 0.2525 Weighted "C"= 0.2625 - 0.24 1.1000 1Neighted Runoff Coefficient Caleulafian a Project: Parc Centre Basin: E IPE Jab 97116 Tota9 Area (acres): 1.5040 Designer: SICM Imp. Area (acres): 0.2400 Date: 11l18 Grass prea (acres): 1.2600 Imp. Area "C": 0.90 Grass Area "C": 0.15 {Irnp. Area}(Imp. "G")= 0.2160 (Grass ►4rea)(GrasS "C")= 0.1890 --w-_~---------------------------~-__ 1.5000 0.4050 Weighted "C"= 0.4050 0.27 1.5ao0 Weighted Runaff Caefficient Calculation Project: Parc Centre gas;n: F iPEJob 97116 Total Area (acres): 0.1300 Designer: SKM Imp. Area (acres): 0.080[} Date: 1111 8 Grass Area (acres): 0.0500 Imp. Area "C": 0.90 Gcass Area "C": 0.15 (Imp. Area){Imp. „C,°)= O.0720 {Grass prea}(Grass "C")= 0.0075 0.1300 _ 0.0795 _ Weighted "C"= 0.0795 0.61 0.13Da Weighted Runoff Coefficient Ca9culatinn Project: Parc Centre Basin: +G iPE Jab 97116 Tvtal Area (acres): 1.3900 Designer: SKM Imp. Area (acres): 0.1400 Date: 11118 Grass Area (acres): 1.2500 Imp. Area "C": 0.90 Gf aS5 Af~a "C". 0.15 (Imp. Area)(Imp. "C")= 0.1260 (Grass Area)(Grass „C")= 0.1875 - ~._o~.--------------------------------- _ 1.3900 0,3135 Weighfed "C"= 0.3135 0.23 1.3900 Weighted Runoff Cflefficient Caleulatiora Project: Parc Centre Basin: H IPE ,Jvb 97116 Totai Area (acres): 0.7700 Qesigner: SK'M Imp. Area (acres): 0.2200 Date: 11118 Grass Area (acres): 0.5500 Imp. Area "C": 0.90 Grass Area "C": 0.15 (Irnp. Area)(Imp. "C")- 0.1980 (Grass Area)[Grass "C")_ 0.0825 0.7700 0.28(]5 Weighted "C"- 0.2805 r 0.36 0.7~00 TIME AND 208 CALCiTLATIONS Inlarud Pac~; fic Engineering GorVary D II Parc Centre PUD Urainage Repart BOW57RING fufETHO❑ PRCIJECT Pare Centre RE+4K FLDW CAlCULA"fION PRQJ EC T ParcCenire DETEM1fTIOht BA51iV pE51GA! SA51N C 6A51N C 10-Yesr Design Storm DESIGNER SKM TaC Area D 85 Acres DA7E 12112 Irrtp Area 6929 SF C = 029 Time Increment {min} 5 CASE i Time of Cvne {min} 6 65 Outflow (cfs) 03 85 ft. [3veriand Ffow Qesign Year Flow 10 Area {acres} 0 85 Ct = 015 Impervious Arsa (sq ft) 6929 L- 85 ft 'C' Factgr 0 29 n = 040 '208' Voiume Proviried 386 0020 Area C 0246 Tc - 4 02 min , 6y Equation 3-2 of Gwdelines Time Time Inc Rntens Deuel Vol tn Vol Clut 5trrage 217 ft Gutter flow (min) {sec} {iNiir} (cfs) [eu R) (eu ft) {cu ft} -----~_M_ ____r~.,~ ~v~~,__~_ Zti = 50.0 For Z2 6.65 399 2 74 0 58 351 120 242 c'2 = 45 7ype B= 10 - n x 0016 Rolled = 3 5 5 300 318 0 78 395 90 225 S= 0 008 10 600 2 24 055 406 180 226 15 9Q0 177 044 452 270 182 d= 0 135 ft 20 1200 3 45 036 477 380 197 25 1500 7 21 0 34 488 450 38 A R Q dc Tc total I Qc 30 1800 1 04 026 496 540 -44 35 2100 091 0 22 501 63a -129 050 0.07 0.68 262 6 65 274 068 40 2400 6 82 020 513 720 -207 45 2704 074 018 517 810 -293 Qpeak far Case 1= 0 68 cfs 50 3000 068 0 17 526 906 -374 55 3300 064 016 542 990 -448 60 3640 061 015 552 1084 -518 GASE 2 65 3900 060 015 597 1170 -573 70 4200 058 0 14 620 1260 -64[} Case 2 assumes a Time of Concentraban less than 5 minutes so tha[ the 75 4500 056 0 14 64[} 1350 -71 0 peak flaw = 90(3 18)(Imp Area) = p.46 G€5 80 4840 053 013 645 144[} -795 85 5100 0 52 013 671 1530 -859 90 5400 0 50 4 12 682 1620 -938 Su, the Peak flow for the Basin is the greater af the two flows, 35 5700 0 49 012 705 1710 -1005 0.68 d5 100 6000 048 092 726 1840 -1074 208' DRAINAGE PC]ND CALCULF1TapNS Required '248' Storage Volume = Impervi6us Area x 5 in 112 mlft 2$9 cu ft 208' Stvraga Valume Prowided 336 cu R QRYWELL REiaU1REMENTS - iD YERR DESIGN STORM Maximum Starage Required 6y Bawstnng 242 cu ft Number and Type of []rywells Required 1 Single 0 Clou6le BOW$TRING AAE7HC7D PROJECT Parc CenVe PE4K FLOVi1 GALGULATIt7N PR C?9ECT Parc Centre ❑E1fENTION BASIN DESIGiV BASIN ❑ BA511d D 16-Year Design Storm E3ESIGNER SKM TQt.llrea 1_ 10 Acres QATE 12112 !mp Area 5726 SF C= 624 Time Inr-rement (min) 5 CASE 1 Time at Canc (min) 1600 Outflowt (cis) 1 85 ft Clverland Flow IC3e&ign Year Flpw 10 Area (acres) 1 1 Ct = 0_1 6 Irnpervieus Area (sq ft) 5728 L= 85 ft "C' Factor 0 24 n= 4 40 '208' Vnlurne Prowded 319 ' S- 0020 Flrea ` C 0264 Tc = 4 02 min., hy Equation 3-2 of Guidelines Tirne Tirne Irsc Intens Q Qevel Vvl In lApl.Owt Storage 455 ft. Gutter flaw (min) (sec) [iNhr) fCfs] (cu ft) (su ft) (cu ft) ..w~..._--__ Z1 = 50.0 Far Z2 18.00 ----'960 1 70 4 0 45 577 96{] -3$3 Z2 = 50 Type 9= 10 n= 0030 Rolled = 9 5 5 300 3 18 0 &i 337 300 37 5= 0007 90 600 2 24 4 59 475 600 -125 15 960 1 77 0 47 564 900 -336 d= 0119 fl. 20 1200 1 45 0 38 584 1200 -616 25 150{] 1 21 0 32 583 1500 -517 A R Q Tc 3c tolal I Qc 30 1800 1 04 027 584 1800 -9276 35 2100 091 0,24 583 210€1 -1517 071 0.06 0 45 11 98 1800 1 70 045 db 246{] 082 0 22 590 2400 -1810 45 2700 0 74 020 591 2706 -21[]8 Qpsak far Case 1= 0 45 cfs 5[} 3000 068 018 597 3000 -2403 55 3300 0 64 017 693 3540 -2687 60 3600 061 016 632 3600 -2958 CASE 2 65 3900 4 54 016 669 3900 -3239 70 4260 0 58 015 693 4200 -3507 Case 2 a55umes a 7ime of CancenErat'san less than 5 minutes so tha3 fhe 75 4500 056 0 15 714 4500 -3786 peak flow = 90(3 18){Imp Area} = 0 38 cfs $0 4800 0 53 0.14 717 4800 -4083 85 810{] 0 52 014 745 5100 -4355 90 5400 050 0 13 756 5400 A644 5v, the Peak ftow for the gasin is the gres4er vf the two flouvs, 95 5700 049 0 13 780 5700 -4920 Q 45 Cfs 906 6000 48 4 13 802 6000 -5198 208' DRAfNRGE PC?NC1 CALClJLATIDlVS Requi red '208' 8f6rage llolume = Imperviou5 Area x 5 in 1 12 inlft 239 cu ft 208' Storage Volume Provided 319 cu ft OFt11NEL'L REQIJIREMENTS -'1C] YE4R dESIGN 5TC3RM Maximum Storage Required by Bowstnng 37 cu ft Number and Type tai 6rywelis Required d 5ingle 1 Bouhle BOWS7RINt; METHO❑ PROJECT Parc Centre PEPK FL,C3W GALCULATION PRi]JECT ParcCenVe LIEYENTI(7N 6A51CJ DESIGM BASIN E BASlN' E 10-Year Design Stqrm ❑E51GNER SKM Tat Area 1 50 Acres DATE 12112 Imp. ACea 10570 5F C= 027 Time lncremen4 (min) 5 CASE 1 Time vf Conc {min} 1643 Outflow (cfs) 1 80 ft Dverland Flpw Des€gn Year Flrnv 10 Area (acres) 1 5 Ct = 6 15 impervious Area (sq ft) 10570 L= 80 R 'C' Factar 0 27 n= 040 "208' Vofume Provided 538 S= 0020 Area ' C 0 405 Tc = 388 min , hy Equabon 3-2 of Guidehnea Yime Tirne Inc Intens QDevel Vcal In Vol,Out Storage 529 ft. Gutter ftouv (min) {sec} (iNhr) [cfs] (w ft) [u°u ft) (cu ft) 21 = 50 0 For ?2 1643 986 1 67 068 893 986 -93 Z2 = 50 3ype B= 10 n= 4 430 RolTed = 3 5 5 301i 3 18 1 29 518 308 218 S= 0007 10 500 224 091 729 606 129 15 900 177 0.72 865 90a -35 d= 0139 ft 20 1240 1 45 4.59 902 1200 -298 25 1500 121 0.49 899 1540 -601 A R Q Yc Tc tatal I Qc 36 1800 'I 64 0 42 899 1800 -901 35 2100 0 94 0_37 $98 210[} -1202 097 0,07 068 1255 16 43 167 0 68 40 2400 0 82 0.33 909 240D -1492 45 2700 0 74 6 30 910 2700 -1790 Qpeak for Case 1= 68 cfs 50 3000 06$ O.28 919 3000 -2081 55 3300 0 64 0.26 942 3300 -2358 60 3600 061 615 972 3600 -2628 CASE 2 65 3900 0 50 0.24 1029 3900 -2871 70 4200 0 58 023 9065 4200 -3135 Case 2 assumes a 7ime af Concentration less than 5 minutes sa thaf ttie 75 4500 056 0.23 1057 4500 -3403 peak flow = 90{3 18}(!rnp Area) = 0 69 cfs 80 4800 0 53 021 1102 4800 -3698 85 5100 0 52 021 1145 5100 -3955 90 5400 0 50 020 1161 5400 -4239 5v, the Peak flow fqr the Basin is the greater of the iwo flows, 95 5700 0 49 020 1198 5700 -1502 {}.69 cfs 100 6000 048 019 1232 600D -4768 208' DRAINRGE POM1lD CALCUVITIflNS Required '208' Storage Volume = tnnperwvus Rrea x 5 in 112 inlft 440 cu ft 208' Storage VQfume ProvEded 538 s.u ft DRYYVELL REQl11FtEMENTS - 14 YEAR DESIGRI STORM Maximum Sissrage Required by Bawstring 29$ cr ft Number and Type af Drywells Fieqwred 0 5ingle 1 DvukSle 6C]WSTRfAlC; METHOQ PRf]JECT; Parc Centre PFA6( FLC]W CALCUdATtON PRpJECT Parc Centre ❑ETEN71OiV BA$IhG pESIGN BA51N F BRSIN' F 10-Year Design Starm dESIGNER SKM Tpt Area [}.13 Acres pA7E 12112 Imp. Area 3486 5F C = 0.61 TAme Increment (min) 5 CASE 1 Tdme of Cpnc (mm) 5[]0 Ouiti4wr (cis) 03 2 ft C]veAand Flvw QesEgn Year F9ow 90 Area (acres) 0 13 Gt = 015 Imperrrious Area {sq ft} 3486 L= 2f[ 'C' Factvr 0 61 n= 040 '208' Volume Pr6vided 133 S- 0020 Area ` C 0079 Te = 0 42 min., 6y Equation 3-2 vf Guidelines Tirne Time Inc Intens QDeve1. Vo! In Vol Qu4 Storage 173 R Gutter fiow [min) {sec) (iNhr] (cfs) (cu ft) [cu R) (cu R) ---...4..__ ----bM.~ _ ~.~m rd Zl = 50.4 ForZ2 600 39[] 318 il 25 101 90 91 4== Z2= 45 Type8=10 n= 0016 Rolled = 3 5 5 340 3 18 0 25 101 90 11 S= 0 011 10 60[] 224 0 18 125 186 -55 15 900 177 014 141 270 -129 d= 0088 it 20 1200 1 45 0 11 150 3E0 -210 25 1500 121 010 154 450 -296 A R a Tc Tc total I Qc 30 1800 1 C}4 008 157 540 -3$3 _~~~«a~ ~--~Y.~= ==ne~=- 35 2104 0 97 0 07 459 530 -471 0 21 004 O.25 2 38 5 00 318 0 25 40 2400 082 007 153 720 -557 45 2700 0 74 006 164 810 -646 Qpeak €or Gase 1= 0 25 cfs 50 3000 0 6$ 005 167 906 -733 55 3300 0 64 0 05 173 990 -817 BO 3606 0 61 0 05 179 1080 -941 CASE 2 65 3904 060 005 agp 1170 -980 70 4200 D 58 005 198 1260 -9062 Case 2 assumss a Time of Cvncantration iess than 5 rninutes so that the 35 4506 056 00.4 2[}4 1350 -1146 peak flaw = 90(3 98)(tmp Rrea)= 0 23 cfs 80 4800 0 53 004 206 1440 -1234 95 5100 0 52 004 215 1530 -9395 94 5400 050 4 04 218 1620 -1402 50, the Peak fraw fvr the Basin is the greater of fhe twa flnws, 95 5700 0 49 004 225 1710 -9485 0 25 cfs 100 60{]0 0 48 004 232 1800 -1568 208' ORAINAGE POND CALCULATIf3NS Required '208' Stvrage Volurrte = Imperuivus Area x 5+n 112 iNR 145 cu ft 208' StQrage lAQ3ume Rrnvrdad 193 cu R ❑RYWELL REQUIRENIENT$ - 10 YEAR pESIGN S7ORM IHaximum 5lorage Required by Bowsirrng 91 cu it Number and Type of Drywells Required 1 5mg1e 0 Rouble 6(]W51CRih7G PuIETFiCJD PRL7JECT Parc Centre PEAK FLOW GALCULATION PRQJECT Parc Centre DETENTIQN BASfN OE51GiV BAStN G BA51N G 10-Year Design Storm ❑ESSGNER SfCM Tat Area " i 39 Acres DA3G 12112 lmp Area 6232 5F C= 023 Time Increment (min) 5 CASE 1 Time of Conc (min) S 3D C7oatflaw (cfs) 1 22(] ft Overiand FIQw Deszgn Yeaa FEow 10 Area (acres) 1 39 C! = 015 Imperv[aus Area {sq R} 6232 L b 220 ft 'C' Factvr 023 n= 040 '208' V41vme Prcadided 298 S= 0020 Area i C 0 320 Tc = 7.12 min., tay Equation 3-2 of Gwdelmes Time Time Enc Intens Q Qevel Vol In Vv1 Out Storaga 155 fi Gutter flmw [min] {see} (inlFsr) (cfs) {cu ft) {eu ft} (cu ft) Z1 = 500 For Z2 8 30 498 2 47 + 0 79 527 49$ 28 72 = 45 Ty,pe B= 10 n= 0016 RolPed = 3 5 5 300 3 18 1 42 409 300 109 a== s= 0024 10 soa 224 072 551 sao -as 15 900 1 77 0 57 6(}5 900 -235 d= 0 118 ft 20 1200 1 45 046 635 1200 -585 25 1500 9.21 0.39 646 1500 -854 A R Q Tc Tc tofal I Qc 30 1800 1 04 0 33 655 9800 -1 i45 35 2100 0 97 0 29 660 2106 -1440 0 38 006 0 83 1.18 830 247 0 79 40 2400 0 82 026 674 2400 -1726 45 2700 074 024 679 2700 -2021 Qpeak £or Case 1= 0 79 cfs 54 3000 0 68 022 689 300(} -2311 55 3300 0 64 020 740 3300 -2590 60 3600 061 020 735 3600 -2E65 CASE 2 65 3300 060 019 781 3900 -3119 70 4200 058 0 79 810 42017 -3390 Case 2 assuanes a Time of C,anoenfration fess ttian 5 minutes s❑ Ehat tlre 75 4500 056 018 836 4500 -3664 peak flvw =.90(3.981{Imp, Area} - 0 41 cfs 80 4800 0.53 0.17 842 4800 -3958 95 5100 0 52 017 876 5140 -4224 90 5400 050 016 890 5400 -451 Q Sa, the Pea#c flow for 1he Basin is ttse greater vf the two Aows, 95 5740 049 0 16 919 5700 -4781 Q 79 cfs 100 8000 048 015 947 6000 -5053 208' ❑RA1NAGE PC]ND GALCLPLATIC7N5 . Fequiced '208' Stnrage VoEume = Zmpervivus Area x 5 in 1 12 inlft 260 eu ft 208' Starage Volurne Pravided 298 cu ft CIRYWELL REQU1REMENTS - 10 YEAR DE51GN STORM N'iaximum Storage Requfred by $owstnng 109 aa ft Numher and Type of Drywefls Require+j d 5ingle 1 Qou61e 8QW5TRIiWG METNO❑ PROJECT Parc Centre PERK FL(]W CALCULATION PR[JJECT Parc Centre DE7ENTI4]N 8A5fN DESIGN BA5lN H BA51N H 10-Year Design Storm QESIGNER 5KM Tat Area 0 77 Acres pATE 12112 ICnp Area 9125 SF C= 036 Time dncremenf {min} 5 CASE 1 Time af Conc (min) 8 70 Outflow (cfs) 1 60 ft Overland Flow ❑esjgra Year Flow 10 Area (acres) 6 77 Ct = d 15 Impervious Ar2a (&q ft) 9425 L= fiQ €f. 'C' Factor 036 n= 4.40 '20$' Vofume Provided 502 S= 0 024 Area ` C 0 277 Tc ~ 3 27 min., by Equatsan 3-2 of Guidelirses Time Time Inc. Irotens. ❑ Plevel, iJol in 4'0l Out 5torage 380 ft. GutteR flvw {min} (sec) [inRsr) {cfs) (Cu ft) icu ft) (cu ft) _.~r------ Z1 = 50.4 For 7-2 rv 870 522 2 41 067 468 523 -54 Z2 = 1 Type B= 10 n= 0 016 Rolled ~ 3 5 5 300 3 38 88 354 300 54 C== S= 0 005 10 600 2 24 062 483 600 -917 15 900 177 649 529 900 -371 d e 0150 ft 20 1200 1 45 440 554 1200 -646 25 1500 921 034 563 1500 -937 A R a TC TC tot2f I Qc 30 1800 1[14 29 570 1800 -1230 35 2100 0 94 025 575 2100 -1525 057 007 067 5 44 8.70 2 41 067 40 2400 O.82 0 23 586 2400 -1814 45 2748 0 74 021 590 2700 -2110 ❑peak far Case i= 0 67 cfs 50 3000 068 019 599 300a -2401 55 3300 Q.64 018 617 3366 -2883 &I] 3600 061 017 639 3600 -2951 CASE 2 65 3900 060 0 17 678 3900 -3222 70 4200 058 016 764 42170 -3496 Case 2 assurrtes a Yirrte vf Goncentrabon les5 than 5 mmutes so tt€at the 75 4500 0.55 016 726 4504 -3774 peak flow = 90{3 18}{Imp larea} = 0 62 cfs 80 4800 0.53 1} 15 731 4800 -4063 85 5100 0.52 014 761 5100 -4339 96 5400 050 0 14 773 5400 -4627 5n, the Peak flaw tar the Basin is the greater of the two flows, 95 57(]0 p.49 014 798 570[} -4902 D 67 cfs 100 6000 0.48 013 822 6000 -5178 208' ❑RAlNAGE POM1JD CALCUL4 TIC]NS Required'208' Storage Valume = Impervious Area x 5 m 1 12 inlft 393 cu ft 208' Slarage lAOlume PrpVided 5(}7 ru f# ORWVELL REQUlRENEENTS - 1[} YEfIR OESIGN STORM Maximum Storage Reqwred by Bowstnng 54 eu ft IVumber aRd Type af Orywells Required fl 5ingle 1 Double BDWS7RING [VEETHOD PROJECT: Parc Centre PEAK FLOW CALCULATI[7N PROJECT Parc Centre DETENTIQN BASIN DE51GM1I 6RSIN Sul-bzsin HI BASIN, 5uh-basm H# 16-Year Oesign 5torm DE5ICNER SKM Tot Area 0 03 Acres DATE 12112 Imp. Area 1077 5F C= 090 Tirrse IncremenY (min) 5 GABE 3 Tirne of CUnC (min) 500 Outflow (cfs) 0 12 ft. Queriand FIow E7esign Year Flou+ 10 Area (acres) 0 03 C! = 0.95 Imperviaus Area (sq ft) 1077 L= 12 ft 'G' Factvr 0.9 n= 002 '208' Volume Provided 111 5= 0020 Area ` C 0027 Tc = 0.18 min , hy Equahon 3-2 of Guidelir¢es Time Fime Inc Intens Q Qevel Vof In lAol Out Storage 80 R. Gutter flaw (min) (sec) [in1hr] (cfs) [cu fi) (cu fl) (cu ft) Z1 = 500 For 72 Y4sv~ 5 00 300 3 18 009 35 0 35 Z2 = 1 Type B e 10 n= 4(]96 Rnlled = 3 5 5 300 3 18 009 35 35 5= 0005 10 600 2 24 006 42 0 42 15 900 1 77 0D5 48 0 48 d= 0070 ft 20 120(] 1 45 0 04 51 0 51 25 1500 121 003 52 0 52 A R Q Tc Tc total k QC 30 1800 1 04 0 03 53 U 53 ~~~~-1~- 35 2100 0 81 Q 42 54 0 54 012 4 03 09 190 500 318 0 69 40 2400 U 82 0 02 55 0 55 45 2700 0 74 002 56 0 56 C2peak fnr Case 1= 0 09 cfs 50 3060 0 68 D 62 57 0 57 55 3300 4 64 0 02 59 IJ 59 60 3500 061 0 02 61 0 61 GASE 2 65 3900 0 66 Q 02 65 0 65 70 4200 058 O 62 67 0 67 Gase 2 assumes a 7ime oi Cancentratian less ihan 5 mmutes sa that the 75 4500 ❑ 56 0 02 70 0 70 peak flow = 90(3 18)[Imp Area] = 0 (]7 cts 80 4800 0 53 0 01 70 0 70 85 5100 0 52 0 01 73 0 73 s=- 90 5400 050 D 61 74 0 74 50, ihe Peak fl4w frar the E3asm is the gneater vf the twv flpws, 95 5700 0+19 Cl 01 77 0 77 0 09 cfs 100 6000 0 48 U 01 79 0 79 208' DRAINAGE P[3ND GALCULA71(?NS Required '208' Stflrage Valume = Impernous Area x 5 in I 12 inlft 45 cu R 208' Storage Volume ProVided '8 91 cu ft DR`(WELL REQPIIREMENTS - 10 YEAR C7E51GN STC]RM Maximum Slarage Required hy Bowstring 7$ cu f# Numbee and Type nf Qrywells Required 0 5ingls ERR Rouhle BOWSTRdNG METHC7D RROJECT Parc Gentre PEAK FLLIW CALCLIEATION PRpJEC7 Pars Certtre DETEfV°i'IQN BASIhY []ESIGN 6A5lN 5uh-hasin H2 BASiPf 5u6-6asm H2 113-Year Ossign 51o rm ❑E5IGNER SKM Tot Area 0 03 Acres DATE 12192 Imp Area 1202 5F c= aso Tirtne Increment (min) 5 CWSE 1 Time of Canc (mm] 500 Outftovv {cfs} a 12 ft. Overiand Flpw Desiyn Year Flow 11) Area (acres) 4.03 Ct = o15 imperviaus Area {sq it} 1242 L= 12 ft 'C' Factnr D 9 n= p2 '208' Vralume Provided 111 5= 0 020 Area ' G 0027 Tc= 0 18 min by Equation 3-2 of Gwdelines Time 1'ime Inc. fntens Q Qevel VQI Sn Vol put 5tcarage 89 it Gutter fluw (min) {sec} (inlFir) {cfs} (cu ft) {cu ft) (cu ft) ZI = 50 0 Fvr Z2 500 ~P 300 3 18 009 35 0 35 Z2 = 1 Type B= 1 0 n= 0 016 Rolled = 3 5 5 300 3 18 0 69 35 0 35 S= 0005 10 6(]0 224 006 42 0 42 15 900 9 77 fl 05 4$ d 48 d= 0070 ft 20 1204 1 45 0 [74 51 0 51 25 1500 1 21 003 52 6 52 A R Q 7e Te total I qc 30 1800 1[74 003 53 a 53 35 2100 9a 0 62 54 0 54 72 003 0.09 2 92 500 318 0 09 40 2440 0.82 002 55 0 55 45 2740 0 74 002 56 0 56 Opeak for Case 1= 0[79 cfs 50 3000 D 68 002 57 0 57 55 3300 0 64 002 59 d 59 60 3600 0 61 002 61 0 61 CASE 2 65 3900 060 402 55 0 65 70 4200 05$ p02 $7 D 67 Case 2 assumes a Time of ConcenYratian less than 5 minutes sa that the 75 4500 0 56 0 02 70 0 70 peak flaw = 90{3.18}{Irnp Area} = p 08 cfs 80 4860 0 53 0[71 76 0 70 85 510[] 0 52 0 01 73 0 73 C== 90 5400 D 5[} 0 01 74 0 74 Sa, fhe Feak flaw tar the Basin is the greater vf the fwa flows, 95 5700 049 0 03 77 D 77 Cl 09 cfs 100 6800 048 4 01 73 0 79 208' {7FLAINRGE POhiD GPILCCJLATIUNS Required'2fl8' Storage Volume = Impervious Area x 5 in 112 inlft 50 cu ft 208' Sfarage Vplume Provsded 119 Gu ft DRYWELL REQl11REMEiVTS - 10 YEAR DESlGN STORM Maximum Storaga Required by Bowstring 73 ou it Number and Type of Drywefls Required i] 5ingle ERR Duuble B(JWSTRING ME7Hd6 PRQJECT: Parc Centre PEhK FLOW CWLCULAtION PROJECT Parc Centre QETENTfQfH BASIhf DESIGiV BRSfM 5ub-6asfn H3 6ASIN: 5uka-basin H3 10-Year Dasign 5tarm DF5IGNER SKM Tot Area 0 02 Acres QATE 17J12 Imp Area $24 SF C - 0.9[Y Time Increment (min) 5 CASE 1 Time of Ganc, (min) 500 Qutflo+x {cfs} 0 12 f4. {]werfarrd FPaw Qesign Year Flow 10 11rea (acres) 002 Ct = 015 Impenrious Wrea (sq ft) 824 L d 12 fl. 'C' Factor 09 n= 002 '208' Volurne Provided 111 5= 0,420 Ares ' C 001$ Te = 6.18 mjn, hy EqwaUan 3-2 of CuidelEmes Time T€me 4nc Iniens. Q Devef. VaLln Vol (7ut 5torage 61 fd Gutter ftow (min) [see) {inlhr} {c#s} (cu ft) (cu fl) (cu ft) ---m~~.F.. -----y ~ Z1 = 500 Fvr Z2 5 00 300 318 606 23 0 23 Z2 = 1 7ype B = 16 n a 4 016 Rvlled = 3.5 5 300 318 0 06 23 0 23 5= 0045 1a 600 2 24 0 04 28 0 28 15 300 1 77 03 32 0 32 d= 0060 ft 20 1200 1 45 003 34 0 34 25 151]0 121 002 35 0 35 A R Q Tc Tc tbtal I qc 30 1800 1 04 002 36 0 36 35 2100 6 91 002 36 0 35 0 09 003 406 161 500 318 0.06 RO 2400 082 001 37 0 37 45 2700 074 001 37 fl 37 Qpeak far Case 1= 0 06 cfis 50 3000 068 001 38 0 38 55 3300 064 0[]1 39 0 39 60 3840 061 001 47 0 41 CASE 2 65 3900 460 001 43 6 43 M=-__=- 70 4200 058 001 45 0 45 Case 2 assumes aTime o5 Goncentration fes5 than 5 minutes sta €hat the 75 4500 05E 001 46 Q 46 peak flow =.90[3 18]flmp Areay = 05 efs 80 4800 053 0 01 47 6 47 85 5100 052 001 49 0 49 c== 90 5444 4 50 001 50 0 50 5v, the Peak ftow for tFae Basin is the greater oF the two flaws, 95 5700 0 49 001 59 0 59 Q Ofi cfs 100 6000 048 001 53 0 53 208' DRAINAGE POND GRLCULI'ITfClNS Required '208' Storage Volume = Impervious ArQa x.6 m 1 12 anlft 34 cu ft 2 08' Storage 4'alu me Provided 1111 cu R QRYWELL RiEQUIREMENTS - 10YFAR DESIC'aIV STORM {V1aximum 5torage Reqwredby Bowstnng 49 cu €t htumher and Type of Qrywelis Reqwred 0 5ing9e ERR Dvuble BOINSTRING METHQD PRaJEG7 ParcCentre PEAK FLl7V+J GALCULATIQTJ PROJECT Parc Centre DETENTION BASIiV QESIt;H 6A5iN Sub-basm H4 8e4SIN Sub-basin H4 1 0-Year f}esign 5torm I]ESPGNER SICPu1 Trat Area Q 03 Acres ❑ATE 12112 Irnp Area 1354 5F C= 090 Tirne Incrernent (min) 5 CASE 1 Time of Cane (rnin) 5 00 Outflouv [cfs] a 12 ft Overiand Ftvw pesign Year Ffow 90 Area {acres} 003 Ct = 0 95 Impenrious Area {sq ft} 1354 L d 12 R 'C' Factor 09 n= 0 42 '208' Volume PraVided 111 5= 0€320 Area ' C 0027 Tc = 0.18 min, by Equatioro 3-2 af Guidehnes Time Time Inc Intens Q DeVel Vol 1n Vo! Dut 5torage 100 ft Gutter fivw (min) (sec) [infhr) [cfs] {cu ft} (cu f[} {cu ft} Z1 = 500 For Z2 500 3[]0 318 0.09 35 0 35 Z2 = } Type B= 1 0 n= 0016 Rolled = 3 5 5 300 318 009 35 fl 35 S= 0005 1[} 600 2 24 0.06 42 0 42 15 90[] 177 0.05 48 a 48 d= 0 070 R 20 1200 1 45 004 59 0 59 25 1500 1 21 603 52 fl 52 A R Q Tc Te tatal f 00 30 1800 1 04 003 53 a 53 35 27170 091 002 54 0 54 0.12 003 4 09 238 5 00 118 008 AO 2400 082 6 02 55 fl 55 45 2700 0 74 002 56 a 56 Qpeak far Case 1= 09 cfs 50 3000 0 68 0 02 57 a 57 55 3300 064 002 59 D 59 60 36(}(] 061 002 61 a 61 CASE 2 55 3300 060 002 85 4 65 70 4200 058 002 67 o 67 Case 2 assumes a Tame of Conoeniration less than 5 rnmute5 so that the 75 4500 056 0.02 70 6 70 peak flow = 90(3 48)(Imp, Area) ~ a fl9 cfs 80 4800 053 [3 o1 70 a 70 $5 5100 052 001 73 a 73 90 540Q 050 009 74 p 74 So, the Peak flow for the Basin ss the greater of the two Rnws, 95 5700 049 001 77 Q 77 0 09 cfs 900 fiflOf? 0 48 001 79 a 79 208' QRAINAGE P(]ND CALCl1lATIONS Requtred '208' 5tvrage Vo lume = Imperviaus Area x sin 112 in/ft 55 cu ft 208' S1orage Volume Pmdided 111 cu R ❑RYWELL REQUIREMENTS - 10 YEAR DESICiN 5TORM dlAaximum Storage Required hy BourstrEng 73 cu ft IVumher and Type af {7rywe11s Required fl Single ERR Double iBVWS7RING METHOE3 PRC]JECT Parc Centre PEAK FLC]W GALCULPe71ON PRgJECT ParG Centre DETEVW7IOM BASIN DESIGN BASIN Suh-6asin Fi5 EiASfN Sub-4asin H5 SO-Year 6esign 5tvrm DESIGNER 5KM Tat Area 0 03 Acres DATE 12112 Imp Area 9395 SF C= 090 Tyme Increment (min) 5 GASE 1 Time vf Conc (min) 500 Outflow (ds) Q 12 ft CYverland FIow {3esign Year Flcsw 10 Area (acres) 0.03 Gt = 0 15 Impervious Area (sq ft) 1395 L = 12 ft, 'C' Factor 0 9 n- 0 02 '208' 1+'aiume Prarrided 5$ 5= 0020 Area ' C 6 427 Tc= 018 mm by Equativro 3-2 af Guidelines Time Time Inc Interss [a Devel Vol In Vo1.Uut, Starage 108 fE Guiter Row [min] (sec) {irUhr) (efs) [cu ft] (ew ft) {cu ft} ~~___w_~ Z1 = 50 9 Fvr Z2 500 ~P 300 318 0[}3 35 U 35 72 = 1 TypeB=10 n= 0016 Rvlled = 3 5 5 300 318 0 09 35 a 35 S= 0005 14 Fpp 224 0 06 42 0 42 15 900 1 77 005 48 0 48 d = fl.070 ft 20 120i1 1 45 0 04 51 0 51 25 1500 9,21 0 03 52 I} 52 A R Q TC Tc tota! I pc 30 1800 104 003 53 6 53 35 2100 0 91 0 62 54 Q 54 [}.12 003 009 257 5 00 318 0[}9 40 240U 082 il 42 55 0 55 45 2700 0 74 4.02 56 0 56 Qpeak far Case 1= O 09 cfs 54 3000 068 002 57 0 57 55 3300 0 64 002 59 0 59 60 360U 061 002 69 0 61 CASE 2 65 3900 050 002 65 0 86 70 4200 0 58 002 67 D 87 Case 2 assumes a Ttme oi Concentratron le&s than 5 mi nutes sa Ehat the 75 4500 0 SS 002 70 p 70 peak flvw m 90{3 18)[Imp. Area] _ 0 09 cfs 80 4$00 053 a 01 70 0 70 85 5100 a 52 001 73 0 73 C~= 9[] 5400 0 50 001 74 0 74 Sa, the Peak flow for fhe Basirr is the greater af the tvuo flvws, 95 5704 049 001 77 0 77 0 09 Cfs 100 6000 048 0 01 79 0 79 2G8' DRAIIVAGE PDN❑ CALGULATIDAlS Required '20$' Storage Volume = dmperviaus Area x 5 m f 12 inlR 58 cu ft 208' Storage Volume ProVided 59 cu (t ❑RYWEI.L RE[]LJIREMENTS - 10 YEAR DESIGM 57ORM NEazimum Sforage Required 6y 8o+xstnng 73 ca ft Numher and Type Qf Drywell5 Reqwred QSingle ERR Double I SPDKANE CQUNTY,! 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W6C30L^~ ~~RmGiAKNI n~--I R a a WH ~ m f°Z o ~ { ~ ~ INLANT.3 FACIFIC ENCxINEERIN+G COMPANY 7(}7W. 7th Avenue, Suite 200 Spekane, WA 99204 (509)45R-6840 Fax: (509)458-6$44 Td-"**7 (~w ~ ~A\ DATE: T.P.E. FROJECT N ATTENTION : PR(7.TECT NAME: ~ DeSCY'1pt1Q17 , ~erox Prints 0 CopY of Letter 0 ~ginal Drativang 0 Contract Tlocuments 0 0 Wor1c Autharizatian 0 Report Ei IVoCopies 1 ~f] e Ctia~:~ y Purpose ~ Inforrnation El Reaiew & Camments ~ Per Your Request EJ Written Apprvval C~ Signature & Return Remarks ~ h ry ~ J' S1gI1ed: ~ CC;~ ~i M oWxxsMrPMs INLAND PACIFIc ENG1NEERING, INC. December 12, 1997 W O. 97116 Sgalcane Cauilty Engineers Engineering Develvpment Services 1026 W. Broadway Ave. RECEIVED Spokane, WA 99260-{] 17D 151997 Attn: Dean Fran.2, P.E. 5POKANE CDi1NTY ENGINEER Re: Parc Centre (P-1809-96) Street and Storm Drainage submittal I]ear Dean: The fnllvwing items have been included in the subrnittal package presented for yaur acceptance the above referenced praject: ■ A completed submittal checklist ' ■ Twa bond capies of the plan set, signed by the spcrnsor, and stamped, signed and dated by the F'roject Engineer, Richard Mason, P.E. *'_:v ■ Apprvved Design Deviatians for the offset intersection at f 1'b Auenue and Pierce Road, and for the Hamrnerhead Turna.rvund on the pr%vate drivevvay within the plat. ■ Fire District approval. a Geotechnical infozinativn, stamped, signed and dated by vur geotecluaical engineer, Jerry Petersan, F.E. ■ •PaVement design infvrmataan, stamped, signed and dated by fihe Project Engyneer, Richard Mason, P.E. s Lat pians azad cross sections for all pcands within the project, stariaped, signed and dated by the Project Engineer, Richard Masom,P.E. ■ A cvnstructivn inspection agreement, signed by the developer, Ken Tupper, as we11 as IPEC's president, Todd Whipple, P.E. ■ Edge of pauernent design calculativns for the widening on both Fierce Raad and 121 Awenue. J 1Documenrsi971161su61 7071A+est 7th • 5wte 200 2020 Lake,vood prive • 5uite 205 Spokane, IMA 94244 Coeur d'Alene, ID 83814 549-458-6840 • FAX 509-458-6844 268-765-7784 i FY1x-208-769-7277 ~ Spokane Gaunty Decembear 12, 1997 Page 2 If yvu have any questions or concems regarding this suhmittal, please call ow vffice at 458- 6840. Thank you. Sincereqy, INLAND FACIFTC ENGINEERING CC)MPANY &Y4 Susan Mw-ghy, E.I.T. sm enc. cG: ~'ile J,12:1rcurrrerrrsi97! 161su81 ~ ~ GRAIN SIZE DISTRIBUTION StZE QF pPEFlIhlG [N INCFiES I U.S. 5TMlDARd SIEVE S[ZE I H1'DRpMETER v T 1 .5 3/4! a/s' a a iio 1620 30 40 ~so sas oo a~o 5oa DO 90 90 2 ~ 7a-••..,___~~,..~_____"._°__~~. ~ t m 60. . a~-~...'____~,."___~.__EB Of LLI gp..,"_._-~~,..'__~~-..------- '50 ~ LL. ~ -y$ LAJ LLI • .,-s_-~ ~ Ci -20 1fl...•--s_~~,...____~,r.~„o~ 1a • 0 iflao 1aa~ i a al o ni 0001 ~ GRAIN SGZE 9N MILLIMETERS COB9LE5 GRAVEL -0'°'RSd MEOIUM I F1NE FINES (SILT, GLAY) • • SAND ExpLoRA'neN sAMPLE oEPrH ~ MvIsruRE % PAssiHC 200 - ~4- I I I k I I I I I ~ I I G~~C s:~~l ~ i I I - - , wROJECr Na.: ~7 t~ 3 PROJEcT NAMe. n&AV' AN 0 QATrt: II+ILAND PAC[F6C ~ ENaIfVEERlNG - ~ GRAIN SIZE D1STRIBUTION SIZE OF C3F'EP11FtG IN Ih[CFIES I U.S. aFANOAFZD SIEVE 512E I HY❑ROMETER 1.5' 3/4' 3/8' a a sa t 6 a3 Ja ~ saso sm ~ xno lfl(7 - ' i ~i d -1 DO 90 •••--a_.,_~...._4~~~...____ -.~~~__..._v~~~ gb....n'____••-'-:~~~ '80 ~ ~ ~ 70 •••----.a..,_..._____~. -70 ~ ~ 1 m 60...__s~__ ~_~,_i -BQ ~ 50.. LL ~ 40..._._s~.,_..i -40 tL1 w ~ i 2CS-- --__o~ -zn SQ...---s~„ ,._._.a..e.~~ '__~~~.,."s__ 10 ~SCf00 - SQQ - - n 1.0 4 1 0.91 ❑ 001 O - CRAIN S12E IN hAILLlMETERS Cc786LE5 GRAVEL. C❑ARS4 MEDluM I FIwE FINES {SfLT. CUIY} ~ 5RN❑ E7{PL(7RA7f(]N SAMPLE ❑EPTH ~ MO15TURE % PASSING 200 f I I ! f I I I I ~ I f PRO.rECr rrrO.: PRo,~ECr nu~e: ~~.~16 o~vL.~-~r 0 aA~: f~ ! INLAND PACIFIC ~ EHGINEERf1dG GRAIN 51ZE DISTRIBUTION . ~ SIZE OF f7PENING 9H aNCHES ~ U.S. STANDARCI SfEVE SfZE I Fi1fQR0METER 100 s i.5' ar+ s~ aia s s zo 3v 40 506cs ar3ti o0 2c~ _ ~ va o i ~ ~i i o i Bo•••---___~...__,.~.~~..__~~~~ ~ ~ 7p•••--__,._~..__,.~,.,.,:~ •--_t.._TT. __~~~~...'-s,~__,,.___~~~.7f7 L.EJ 60 , ~..-------,,.------•sa L ~ 50 ~ F- 40...,___-~~_,•._'___ '44D z W ~ C) 30 ,.__..T- ..30 LLI CL 20...._~__~.~~.."v~~~,...__~~~.,~....~~_~ .,24 ,.10 ` ~ ~ ODD 0.01 0001 GRpIN S1ZE IN MILLIMETERS CaaeLES GRAVEL COARSd MEDIuks I FINE FryNES (5fLT, GLAY) SNdt] - EXPLORATION aAMPLE []EPTFi % MDISTURE % PA$SlNG 200 liP-(I be d_ I I I . PROJEC7 NR.: PRCIJECT NAIAE: AIA 0~3v"° t\J 0 pATE: 2 3 Al t t IIHLAAIG PAGIFiC EHCiINEER[NC1 to INLAND PACIFIC ENGINEERING, INC. November 18, 1997 IPE W.O. #97116 Spokane County Public Works Department Development Engineering Services 1026 W. Broadway Avenue Spokane, Washington 99260-0170 Attn: Bill Hemmings, P.E. Re: Parc Centre (P1809) Pavement Design Dear Bill: This letter and attached calculations provide the documentation for the pavement design for the above referenced project. The exhibit drawing included in this package documents that the samples were obtained at a stated locations and soil classifications done on the samples under the direct supervision of our geotechnical engineer, Jerry Peterson, P.E. The resulting pavement design for 11" Lane, the private driveway, 121 Avenue and Pierce Road are derived from the local access matrix provided by Spokane County at the predesign meeting. The section for all of the above referenced roads is 2" ACP on 7" CSTC, based on the soil classification and an ADT for each road of less than 200 trips. Please note that the five with frontage on 121 are not to have access from the private driveway, leaving a maximum number of lots accessing Pierce Road at 17. At 10 trips per day, the resulting total ADT is 170. Due to the very short design length of Pierce Road, one soil classification was done on - the Parc Centre project, but three were done on the adjacent Meadowland, which also has a section to be improved on Pierce Road. Should you have any questions regarding this design, please call me at 458-6840. Sincerely, • Inland Pacific Engineering Company G~j► oF wASs'O ~ y ~ Richard L. Mason, P.E. r 13037 ~ RLM/skm i '~FCrsr~~ EnC. ~SrONAL ~G cc: file ~ EXPIRES 06/11/ Documcnt1971161pvmrtrr 707 West 7th • Surte 200 2020 Lakewood Dnve • Suite 205 Spokane, WA 99204 Cceur d'Alene, ID 83814 509-458-6840 • FAX: 509-458-6844 208-765-7784 • FAX• 208-769-7277 - 7 INLAND PACIFiC E'NGINEERING, INC. Nowember 18, 1997 W.O. 97182 Office af the County Engineer Engineering DeVelopment Seryices 1026 W. Brvadway Ave. Spakane, WA 99260-[]170 ATi TN: Dear► Franz, F.E. RE: Results of Svil Classifcatian Testing Propvsed Parc Center Subdivision Piease find enclased the results of soils classification testing perfarrrned by Inland Pacific Engineering Company, Znc. (IPEC) vn six svil sarnples obtained fi'vrn the above referenced residential development. Test pits TP-1 through TP-G vvere excaVated at the agpraximate lacativns shown on the attached 5ail Classificatian Test Pit Lacativn Plan. All samples vwere obtained frvm depths of between 1.25 feet (appraximate bottom af topsvil) and 5 feet at the sarnpling lvcatians. The sample locations werre obtained by taping and pacing firom existing site features, and shvuld be considered accurate to the degree irnplied by the methads used. We certify herein that the samples tested were obtained by rnembers of vur staff frvm ttae apprvximate 1ocatxons stated abcave, and that based on the data enclvsed, the Q]SCS svil classificativn vf SP-S1VI ks correct far the saznple fram TP-1, and classifications of SM, SVV-SM, SW-SM, SP-SM and SP-SM are carrect far the ather fiue (fiP-2 through TP-6) of the samples tested, respectively. PPease da not hesitate ta call if you haVe any questions regarding this letter vr other aspecfis of the proJect. Sincerefly, INLAND PACIFIC ENGIIYEE OMpANY was,y,~ ~s c, Q ~ 0 Je . Petersan, F.E. ~a R ~'revtechnical Engineer NAL iw W Enclasures: Sainple Gra*kmewifh WSa4assificativn~ 3 M3ocumcnW7182\S01U1mu..pa 707 West 7th • 5uite 200 2020 Lakewood Drive + SwYe 205 Sprrkane, WA 99244 Coeur d'Alene, ID 83814 503-458-5840 • FAX 504-458-6844 248-765-7784 • FAX 208-769-7277 ~ . GRAIN SlzE DISTRIBUTION SIZE OF OPENiNG !N INGHES ~ U.S. STANDARp 51ElIE SIZE I }i5'DROkEETER l.s 3J* 4 g 10 9$ 20 30 4f] ~U BOl'DO 2p~ ~ 1~ _ 4 I Ix I l I I I I I I I I I I ~100 -sa aa- ...__~~.,e-,.,, ; ~ .•--~i~._.~....__y._~-••-- . °eo ~ 7n..._-..~_~~..__,,,~~~ 70 ~ ~ gq.'•"r--, 60 m ' ,W 50 •••--_,__~....~~~~,.~.s..___.,.a~ r~ z LL. q0. z Li ~ I Li CL 20••i --s-a•20 I ~ ` 10•...s_o ~..,~_e___•""__e~.,."~ ~y~ _____...._m_~_ 10 a 5000 1(]0 1(1 10 O1 0. 1 fl~1p - GRaIN SIZE IN MILLIMETERS . • -QARSE~ MEI7IUM I FINE COBBL~S CRAVEL FINES (51LT, CkAY) SAhlD E}4PLORATI4GV sAMPLE ❑EPxH % MoIsTuRE Z PASSfNG 200 PRaJEcT No.: ZPROJECr ntiaME DA,E: INLAND PAOFIc ~ ENGiNEERIHC# ~ a R ,i GRAIN SIZE aISTRIBUTION SIZE C]F OPENING IM IFECMES 1 U.S. SFANpARD SIEVE SlZE I HYpROkfEfER f.5 $(4' 3/$' d 8 10 S 6 21 I I 1 I I S Y40 5QG0 801 00 2~ 140 I I E 1 I I I --1 00 ~•'•..-r-,_,. _90 ~ gp... -__~~o••._'ao..~~ ~~~...__.r~-~. .~.~,~__~~.84 - ~ ~q~....'___~~,.z:..,~_~,__'•.__--i~•• 7_-s__••'___-~~ •.'__.~~_'7~ ~ } m ep"•.__~~^.,.._.,'__~~r,~ .._a__~ 60 lx w ~•'•---,e~~ .__rw~~_ ..___s~ '50 Z .-.__o__~~..____~~..~~~_~~_ qp...---._ 40 z LLJ ~ 3p..,---,__~~..__»„_~ ,..___~II ~.~,___,__'•'---~.m_ ••__~~.~s_30 w 20... s___~~~ .._~r._~__'°---~__~'~ TQ . 0 ~--~~-^--^-^^r - - - - - - - 0 1Dq0 i0Q 19 ]'a 61 p.p1 4071 GRAIN S12E IN MILLIMETERS C488LE5 GRIiVEL 'OARSE~ ~AEf}iUiaS I FINE F1NE5 (SiLT. GLAY) - - SAi+fD ~~PLDRATIOIV SAMPi.E aEPTH % MOIS'fURE % PASSING 200 ~P - f- I IC I I I t I I I I I ~.~Cr~ + 7IM~ ~ I I ~ PRoJECr N:q~ 1~ Z PRaJEcr Nnene: aA~: ~ r INLAND PACIFIC ~ EHCifNEEFi1HG1 GRaIN SIZE DisTRiaUTiON SIZE OF OPEN1NG iN II+lCHE5 I U.S. SfiANDARb 51EVE SIZE FCfmQ1vfETER 1.5' s/s' 3a 16 za sa 40 5050 sm ~ 290 t~ I ! t a 6 r ~ i i i i r 00 '90 $]..,.~~~~~.~s...s~~~~~".~~~~ 'QQ 70.."-__ ~ 7n ~ ~ m so-•~--Ya~.~_...._~.-~~,_----e -so ~ w ~.,.___o=_~..--------••------~ .50 z ~ aa- _v__~~ -40 ~ - , tr.N ~ 30...----~_..,~..__~_---~•------~~ ------••-----~,..-----,.4,s, 30 ls.l d za-i ~ ~ ❑ 3009 1p0 Iq 1 U 0.1 0.01 0:001 GRAIN SIZE IN MILLIMETERS CO89LE5 GRAVEL C4AR54 MEDIUM I F-I'~E FINES (51LT, CLAY) SANb ' EXaL❑1RA71UN SAMPLE DEPTH % MO15TURE % PASSING 200 I I I I I I I I I I f v ' PROJECT NO.: PROJECT taAME: PMC C 6`V-r64 DATE: s I ~ Ih[LAND PACAFIC ~ ENGENEERIHGt GRAIN SIZE aisTRIBUTION SIZE pF DPENING IN 1NCiiES IUS STANDARfl SIE'VE SIZE 1 ~ROkiETER I ' 3/4- 3'~ ~ 11a s s aa sa eo sosv eo 1PD zV c0 -4 - 100 F-° ~ -70 ~ ~ -----~~..---_------t ~--_~s_ . _~_~=,,..z--~--~--f sa m W- LLI ••-_s.~~ ..~_,__~..__zs__~:. •50 ~ LL. 1-- Z LLI 30•..__~~__.~: ..._.+~s~.:~_==~~s~.~_,o~..~.~_ .::_==~~s.:__~~ 35 EL' LLI CL Zp. .__~_~~~.,._~~-__a •-.__s,~...~r~~___~~....~~---~" ,.---~i -20 ~ ]Q•..__~_~`~..._~_-~ 10 0 ' 1000 100 10 5 6 01 - - b~i fl 6L31 GRAIN SIZE IN MILLIMETERS ;DlV2SF~ MEOIUM ~ FIt~E COBBL~ GRA3fEL F1h1E5 (51LT, CU1Y) • • SANO , E}CPLORATIaN SAMPLE DEPTH % MC315TURE ~ PASSING 204 I I I' I 1 l PROrECr Q.: q7 ~ B~ PRCl~JEC7 NAA+IE: q~~~- : ~~'F ~ INLAND PAC[FlC EHfllNEERIMQ ~ GRA1N SIZE aISTRIBUTION 58IE DF OPENING 1N INCHES I U.S. STAJdDARO SfEVE SIZE I HYDRDMETfii 1ig' 3/4 3~ 4 8 1.0 1624 30 4d 5" i60 iD] 2O 100 -IpO gp....._'__~~..---.~~_~., SID eo-••------ ~.~a -a~ - H ~ 70....,.___s -70 ~ ~ ~ scs-..._e--- ..w__.~~,_.~ ' -60 m ! w 50.,.__,--- -so z C,L ' . F 40..._~_~~~~~..._-~~~~ ..+0 z LLI LLI CL x~-,..___-~_,..._~.~~~... --••-----~T.---~--- -2a 1 -,o fl•~ r---- ~ - o saon 100 10 1 ~ 0.1 001 ❑0a1 GRA1N SfZE 9N MILLIMETERS COSBLES GRA'VEL :~OARSd h{EOIl1M { FfNE FINES (51LT. CLAY) SAND ' ElCPLOFtA710N SAMPLE DEPTH ~ MOfSTUFtE % PASSING 200 , -rP-,6 ~ le I 4-- C ~3 ~ ~ I I I I i I ~ I f I - ~ PRCiJECT N4].: 1-Y 07' PRO,JECT NWy+fE DA,E: r ~ ~ ~ ~LANv PACIFIC ~ EkofNEERING " e a GRAIN SIZE DISTRIBUYION siaE OF aPENiNC IM rNCHes ~ U.S. srANoaRn siEVE siZE I . HroRoMETER 100 '1~ 3i4- 3~ ; 4;0 16 zQ .~s ~ s~v sal~ aqo Y -100 -•--eo - ~ ~ 70.,.._-----3.'.~___.,__,,..___- ....-----,..-----~...-----~-~v W ~ s ~ -ea LLJ 50. - •--v~.~~ ._,__.:sT,.-----_---~.~n LL. . ~ 40.,.------ • -~--~~..,------,,.-----~,_fo W 0 30.,.___,~,-.._,___~~...____-~, n._-----30 ~ a .,__~----zn io-~----__,_....___~~._____~~~...-- .._~,----ia p r Q lOaQ 10o 1.0 Q 1 fl81 0001 GRA16d S12E IN MILLBMETERS CO8BLE5 GRAVEL • Gi7RR5d MEQ1UM I FINE FlNES {SILT. CLAr'} 5AhlD EXPt(3RA710N SAMPLE DEPTH % M01SYllR£ % PASSIAIG 200 - - , RROJECi N.: PR(7JECT NAME: PA ~C ~~^+~`~~IZ QAl`E: t ~ I HLANQ Pe4G[FIC ~ E'NQlNEERENCi o.- r. aav ,r.....- ..c.• acr tia.wv rIa v.ua..e. a+F+...~a a aaw uaai 1 4VL SPQKI4NE VALLEY FIRE DEPARTMENT ~ . S,pvkOrre Cvunty Ffre Protecfion Drstrict NQ, l 10314 EASZ 5'PRAGUE AVE. ■ 5P0KANE, WA 992o6-3ti76 •O9) 928-17W • fWS (509) 5i27-2Z27 ~ R. Pat Humphrroa Ctd41 5eptember 24, 1997 fiamtay Jones Department vf Building and Flanning W 1025 Brvadway Spokane. WA 99'z+6o RE: Parc Center PE-1806-96 17ear Ms. Janes : The 5pokane Yalley Fire Depastment has a site pian submitted that depicts fire hydrant laeatians and agparatug turnarounds that meet orar requirements. ak ta telease. _ ' - _ - Sinee ly. ri ~Miiie- Fire Inspector KMJmd L _ . _ ~ . 6 f. _ REQUEST FC3R DESIGN DEVIATTON $30.00 I}ATE .pnY ib, 1946 ROAD rrAM~ ~ ~ (PROPoSED FRIvATE LANE) CRp/M # H!e NAMEDF 1'LAT FR(IPQSED PRELMNARI PLAT 0F FARC CENTRE plat #FE°17$3-95 A.i]IIRESS 0F BLI7{i ~ETWEEN IaTH AN6 12TH. A'9'EHIIES WEST OF PIEItCE ROAD - NAME L7F SLDG PROIECT BL,DG1# B9 S T R_ FEIJERATJSTATE PRO7ECT # NIA PRaJECT L.IMTTS EXISII.vG cvNDMvNs: ` PRoPasED mAPROv~F-NrS: ROAD wIDTH zs ' PLus cMs ROAD svvRFAc~ ASPHALT AVG. bAII.,Y TRAFFIC - , 17 L{]Ts @ LQ TRIPS=170 AvT Cvrrent Traffic Couui Desagn Yeaz` 'I'raftic Count PROJECT DF-SCRHMC)N PRUPaSEU 11TE[ I.ANE WILL SER'fTE A,RESTDMIAL SiNGJ,~ FAKIT,Y LOT SIIBDIVISIQH ilF 17 L0T5. L 1TH LANE WM IIITTERSECT WITH EXISTING PTERCE ROAD AND W~L APPRfIXIKATELY LTN£ UF 'FFITH 11TH AVENUE (EXYSTING) . PROPC)5ET3 dESIGN dEVIA'ITQN SLIGIIT PSI5-ALIGHIIENT OF PR[?POSID 11TH LANE WYTH EXISTING I11`H AVEnE IIJSTF.AA +OF STRAIGHT dLIGNmT []F GR1D35 s1REETS OF AN AaTERSEcTi{}N A.a OuTLTm iPT I'ARAGRAPII 04 OF THE SP(lKANE COUNTY STANDARDS Fi7R AUAI) ANT) SEWER CQNSTRUCTILON. lUSTiFICATIC]IV: PR(}PERTY I5 NDT A,DAILABLE FOR SPONS[lR Ta MAICE STRAIGHT FUIIR WAY, 90° IIyTERSECTION ~T 11TS APE AND PIERCE AO9D. FRDPOSEI3 INTERSECTfOH CONFIGURATIC}N WILL SKEW THE AI.IGNMENT OF PRvP[lSED 11TH Y.ANE A MAXIlKUM OF 150I]EGREES FROM THE dLIGiKMT UF 11TH LANE. THE MTSeALIGM= (3F TEIE CENTFMi.INES dF 1 pTH I.ANE ANl 11TR AVEM WILL 73E APPROXIHATELY 15 FEET MEASURED ,ALONG THE CF'N'f'RRT.INE QF PIERCE RI}AI1. PARAGRAPH 3.04 OF THE STANmAxDS suGGESTS TRE 90 AEGxEE STRAIEr IN=ECTION "WHERE F'05SI$L3:" BITT I]OES HQT MM ABSOLUTE R~~~~EMENT. B(1TH 11TH IAHE ANA 11T AVENQE CARRY I,(}W TRAFFIC 9dx.UMES. . susMr= aY xiCUA" L. MAsON, F.E. , n~TE 7111l96 _ ADDRESS C,fO IMLM PACYFIC ENGTI~ERING 707 WE5T 7TH AP~. ~2017 SFORANE, WA ZIP CODg 99204 PHONE # f 509) 458-6840 ADNU'+1I5'TRATM VAR'~[ANCE FEE OF $30•00- PAUD TQ SFUF►ANE GvUNTt' - 1026 W 8RC?ADWAY, SP{]KANE WA 99260-0170 PHONE {509)456-3500 F-AX (509)324-3478 `REQi]F.5`I' NQT BE WTrH0ITC FUNI3S- CAS C "10 # RECETVED ~ bATE 1►tta~ign - - r.-) 5~^ x.~a y."y~-w y `k., . ~~..e~~.~'k~' r. ~ AUG 24 1996 REQiTEST FOR T]ESiGN DEvIATION $30.00 . ~ATE a ~ :TUL~ 11+ -1995 ' • ' - - Ro.AD NAME 1 iTa LANE (FROPOs~ ~~~ATE LANE) _,CRP/RID , . N1A . "`:Z•Y y . . . NAME OF PLAT PRoPf75ED PRII.imjiiARF FLAT OF P6RC CENTRE Flat # PE-1783-95 A1~DRES5 OF $LDG BETWM 1OTH AND I2TH dVENUS WEST OF PIERCE Ri]AU Al'ANM OF HI.DC'a PR+QJEGT BL']G# B9 S 'I' R FEL7ERAI,ISTATE FRC]JEGT # NIA ' PROJECI' LIlAM EXISTIl+iG COM]TTTONS: PRC]PC]SED IMFR+OVEMENTS; ROAD WIDTH , . . 28' . PLAS CIIRBS • ROAI'! SURFACE ASPIIAI.fi AV~'r. DAII.Y TL4FFIC 17 L3T5 @ 10 TRIP5=170 AI}T Curent Trafffc Count Design Year Traffic Cvuut PRaJEer nEsCRIMarr PROPOsEO 11TH LANE raILL sERvE AREsInENTIAL sINcr.~ FAMaLY LOT sMnIvIsIa . OF 17 L(]T5. 11TH LAATE WTLL INTERSECT iTITH EXI5TING PIERCE RQAD A1VD WIU APPR[}XEIATEI.Y LTNE UP C+TTTH 1 ].TH AVENIIE (F.gISTING) - PR[}P❑$EI] DESTGN DEVIATIdN QSE OF "HAMMER HEAD" TCIRN ARQiIND ON IA7'H I,ANE INSTEAD OF C[TL-]]E- SAC AS REQIFIRED IN PARAGWR 3.17 OF THE SPOKANE COIIrin STANfDARDS FOR 8QAI) AND SEWER NSTRUCTION. JLTSMCATION: 1 TTH T.ANE WILL BE A"DEAgD END'r PR.Ii1ATE STREE~ ~TH LOIW TRAFFIC YOLIIME, "ffAMMER gg,AD'• TURN AR(3ITNI? CU1dFIGURATIaN MEETS FIRE DISTTRICT # I STAHDARDS FUR THE PRIVATE RO,AD AND THE URIVE'WAY ~ ~ BEErr RErzEWED Arm APPROVED aY THE nIsTRICT (s~ ATTAcM PxELIKIsARF PLeT MAP) . FRF9'dTE ROAD WTLL BE ALIN`~'.~D BY HQME: OWNERS. - • _ 5UBMT= B3I RZCHARD L. MAif]Pi, F.E. L7ATE 7/11f95 - ADTi]R,ESS C1O YNLAND PACiFIC ENGINELERING FlEST 707 7TH AQ'E. #204 SP[3KANE,WAZTP CODE 99204 PHLyNE # (509 ) 458-6840 *~~s:■s AIDII+DWTRATIVE 'f+'ARLAAiCE FEE OF S30.00 FAID T(} 5~''C3KANE COUNTY :s9ssrsa 1026 W HRC}ADWAY, SPUKANE WA 99250-0I70 PHONE (509)456-3640 FAX (5"324-3478 -RE iJEST WI t71" BE ItE~+'IEWF.I] Win-iD[TI' FL]NDS- - GAS UJ-A-# REGEn`ED B I?A"TE At ~k I D~ SIGN DEVXA''IC]1V~ ^ STAT'F FtFC[)~Nd7ATIONS TthE F7L~~ G ,d"n .d_r° t v.l ~ ► 'I'~i~G, _ - , Approved Approved wleonditians Nqt Approved ; Projeet 1'v~anager Date Approved Approved wlconditions Not Approved I - _ ~ Planning & Traff'ic E/ngineer Dace ~ ~ _ . • Approved Approved wi'coAditians Nat Approved r 4 -~~-Pz; vC . f 1~ r . Project 1VFanagement En,gineer Date r f ~ i : P ApProved Approved wJconditipms Not Approved ~ ) ( ) { } _ Operatiams Effiginecr I)ate SP+bKANE GOT7NTY E1VGIIV"EER'S ° I]MRMINA'TIO1V': - i , , 4p,praved wlno cconditions Approved as recomnended above Nat Approved , Spokane Caunry ngineer Date ~*,s I OCT-16-97 THU 04:18 PM WIMDERMERE REAL ESTRTE 92$4250 P,02 OCT-16-1597 16: aS - ir+LArrra PRCiFtc ENG • F,02 ~ . wrrNORTHWEST . V~fQ~K AUl~H~bR~~~,._AI i~JT~ ~~~~IYiC~ E~~~AIfTACH~ENT"pLg DETAcLEo DESCRIPvrvN OF woRK Pam Centre (22 Resfidenda! Ints with Private Raad Frvntage) CnrtstruC#ion Inspectian 8rI Northwest W.O. N 97204 : TI Narthurest will perf4rm Consiruction Inape€Ition 3enriCes a8 OuUined tel4w and charg@ for said s6NiC99 Gfi the b86i5 c7f tSr414 and Bxp811S8. A. ROAa CvNsTRUCvrvN rNsPECTIoru oF: 1 . Earthwvrk and Subgrade Praparativn, 2. Placement and eampackirrn of aff taase material. 3. Placemem and compaction of pavement. 4. Curb Find SideWalk In5La11atiQn 5. Dryweiis, inlet5, and ga+3eral facifities. 6. 'Serraporary drainage #ara#it'ses 7. ErvSivn r,an#ro}. 9. Covrdinativn with Spokare Ccwretyr 9. PrBpafation and submitta[ Gf'RecOrd' Drww+ngs'. 14. Svil testing fvr r.om,pactian and backfill for item5 I thru 5, and sswer installation 0. Direct Expense i. Mileags at ffi0.30 per miie. - 707 W. 7th Avenve. Suite 200 9 Sprikarte, WA 99204 • Phvns (509) 459-6840 • Fax (509) 45$-6844 OCT-16-97 THU 04;19 PM WTNDERMLRE REAL ESTRT£ 9284280 P.03 • OCT-16-199? 1sF l8 rNLwND PACFFLC ENt'i P.03 ~ • tnspectivn page 2 2. OESCRlP'RON DF wORK 'y personnei shaf[ rzat relieva fhe Ins,pection by STI Nnrthwest personnel or other a~~nr cDl'?"ctQt of h15 r8Spi3nSiblllty t0 Cof1SfriJGt the fSCFIifieSi iDVBTed by thl5 ag1e@r1'tLf1t t0 the fine and gfade shvwrt on the approved plans or ss staked by the engineer. This oontra&t agreernent does ►zvt include construdion mana,gement or schaduling actrVities. I_ The sWpe of these construction sngineerirg services tncludes: A) Perivdic obServatipn, rsportiRg, and soil testlrEg o# specific [avnstruction activrtiss arr this projeCt wh,ch include; Sewer B~ckf il, 8sses, Subgrede, P'avement, Concrgta Curb and Gutter. Sidewalks, end Starm arafnage; B) Maintenanc.e of ali construction recards relateti tv constructian alfttivities vutfined in pera~raph"K abovo, which may include; daily inspection teports, manufacturers' ceatific,ations, materjal test reparts, artd carrespondence; C] Assurance that the c.onslruttivn of trie rcrads is $cvvrding to the appraved planrs aecepted by tha Spakano Gvunty Eng{rreer, Spvkane County Gsneral Pr4visicsns, the Standard Speateations, and appricable portions of the "VVSDt3T Canstructivn Manual; - 0) Develapmen# of Post Construction Recvrd L3rawings for 5treet artd Stoma Ucainage Fatilities; it is unde►stood the ~acilities inspectetl by firms vthoe than STI Narthwest v+ilE be certifred by those fams in a#arm aocepiabl9 tv $,pokane Cauniy: Ef Goorcfin8tivn of the testing of annstruction matetials for cornpliance to tFaa plans accepted by the 5pakane Ctwntyr Engineer, Spokane Gounty Genetal Praaisians, the Standard Spec+fCatians, arrd applicsble poe#fans of the INSDOT Ccnstr,rct'ran Nanual. Some mat8riafs testirag wi[i bs perfarmed by Cthers and billeci separatefy frvm ST! Nctrthwest bitlictg. Z. Prior !o aCVeptance o# the raads and ctrainage facilities by Spvkane COUnty, the Engineer shall submit ai6 construtt'ron tecords and the Recotd Drawing tv the Spakane . Cc)unty EngineAr. 3. Ths effort requiced to complete inspedian in eccvridance with Gvunty requirements varies vvidel~ and is closely relat-ed to how wefl your coratractar ptans his activities, communrcaies with out inspectiUn stafF and the quality of his vvork. Ws strangly racommend a Qro-cvnstruCtion meeting ►nith ydu. Ycxar oantractor and STI NntOwest ; personneC prior to cornmenGement of canstructivri. . ; uGT's16-97 THU 04:28 PM WINDERMEKE REOL EL-.-1"fE 9284250 P.04 CCg-16a°1997 15:19 ZNLAhfL1 PACIF1C ENU P.0Q s ~ w' t .r~ . . inSpeCtiCn page 3 ST! Northvves# will provida as imuch soi! 2rnd matarials testing in hause as ~o-ssipie, bu4 wiii not hes'date to use outside cansul#ants whore the+r specialty ds required. We fee1 wa can provtde better Sen~ioe an quality► confroi, and stream(ine ths inspectton proaess as required by Spnkar+e County. Sfii WQrthwest has a nucfear densrnneter for r.ampactian tesfing that tents Qut on sn hvur[y basis. The soils and material festing Is bifled vra etirne and expense #8si5. A monthly invoice wilf be prepared and sent ta you iar the soil and materia[s testing. TtA ant4unt 4f testenq ;s lmpoasible t4 antiCEpate, artd will require your cvntractof and cvnstruction manSgsr to cavrdiraste with vur inspBCtivn department. AS you knaw, there are soils and matePial testlng gu#delEnes required by Spocarre Cvunty, but the requirements are Qnly the minimum and 4oddil;anaf testing msy be required. The seroice8 describe+d hereirl v►►i1i be perfarmed as needed arrd bilied on the basis ot time anci gxpense as outlined in tt►e maximume hourly bidling (stes by job classific,ation includ'ed in the Wark Ruthorization. You should budget $5,000.40 for the inspeetion servioes autdfned above on a one time besis, and you should budget $1,$00.00 for sofls and materier testrng, Mr. FLen T'up,per agrees to provide ta STI or arrange for a,pgropr:ate certifications from Other firms and tv inc.tude pravisians in their cvnstrudiGn contracts to b8cic cha►ge their ovntractor for the cv&t of 5TI senrices which may be required tar re-irrspectinn +ar re testing of taciltties whkch faiied tv meet the required standards. B illirtgs fve said re-inspec#ions wfll be carelully identffled or~ STI's billing ta Ken 7upper. i(en Tupper wi14 be responsible to bacc charge his contradar. !t 1s alsv undetstaod that ntr r+rorlc shafl commenr,e wfthin any pvrtfon vf the proposed 5poka" County R'rght of Way wlthout rrst okrtaining a written permit and approved plans trorra the CounIy Enginaer. It Is alsa understood that any project facilitles constructed wilhott# adequate inspedlvn and documentation by STI wjil be remaved and Eevonstncteri in accordanr,e with approved project plans and Spokarae Cvunty Specisicatians, or STI will nat ba respnnsible for proJect certificetiQn ar submfssiara vi record drawings ta #he Cvunty Engirteer. Amep1ed. 5TI vrt &t AGeepted, Ken Tuppgr by: ` by. Y~~ date. ~ ~ r►vLAn►D PAcrFrc EnrG►rvFERrNG PR[DJECT IIVFORMAT10N TYPICAL SECTIOIN DAFA Project PARCCENTRE RQadwayhalfwidth EMTER- 15 JOb llf0 ' 97116 R[73d Il18m8 EkTER- PIERCE Rf3AD Disc No.. Ze€t vr Right ENTER- LEFT File Name° PVDSGfV.WB2 Edge Type EaGE OE ASPHALT Galculated 8y• SKM Stafian lnfenral ENTER- 50 ~ L?15T. D15T FROM E P, €LEV. E.P. E'LEY. SAWCUT GL rO 1 SLOPE EDGE CENTERLfAIE {-4.5% from { 2! from Edge Pave. GlL la SLOPE P1/W7(EXS7) SAYVCUT CIL Tp PAVEMFNT TC7 GC17"TER sa+rsut to sawcut tv SELECT- to Gutter +Edge afPv. TOP OF STATI0N ELEVATlpN CJL ELE'YATlDN (IN F+~E7) SAWCUT % SLaPE (1„lill FEET) edge of,pv} edge of pvy ED ELEV % GRADE JGhAl7E CilRB EL, 2174 26 206555 2055.51 800 -1 75 ' 75 00 2055 20 205537 205537 2055 76 2231 88 205423 -246 2054 a3 8 o0 -2 5ll -257 15 co 2053 72 205389 205309 -2 00 -2 57 205428 2283 17 205282 -2 75 205263 800 -2 38 -2 73 1500 2052 32 205249 205248 -2 14 -2 75 205287 J 00Cl1AAIENT197115SPVO5GM3 W82 1 77174187 lNLA NC] PACIFIC E1VGlNE€RIN'G PRO.►FeT rnrFaRMaTroN TYP1CaL sEcrIoNOarA Project Pi4RC CENTRE Roarlway half wrdth ENFER-5 20 .lok No, 97116 Raad fllame ENTER- 127H AVENUE Di5c No ' Leff vr Rrght ENTER- LEFT File Nsme PVDSGN,WB2 Edge Type EDGE QF ASPHALT Calculated 8y SKM 5€ativr+ lralerval ENrER-a 50 MINIMUM ~ l71ST. I315T FROM E P. ELEV E.P. El..EIA. SAWfyLIT C1L TO % SLC3PE EDGF CFNTERUNE (4.511. fro!!? (-2% from Ed'gE PaVe. CIA % SLOF'E PVlNT(EXST) SAiINCUT GL TQ PAYElV1ENF TO Gdl7TER sawcut ta sawcut to SELECY fo Gutter Edge of Pv. Ti7P QF SFAI'YaN ECiEV,4TlON G/L ELEYA"fION {FEE7} SAWCl1T % SLOPE ( FEE7} edge of pvj edge af pv} E[1 ELE11 % GRAl}E /GRADE CUR6 FL. ssi ss 205430 zvsa za a ov -o 7s av ao 205370 205400 205380 -3 F7 2054 js 700ov avsa za -a as aosa is 800 -o sa -a zs za ao 205361 205391 205361 -4 sa -050 2054aa 75000 205417 -0fl6 205410 8 00 -0 88 -010 2000 2053 56 205386 2053 85 -2 00 0 50 2454 25 SOQ 00 205440 0 46 205435 8 90 -063 050 2000 205381 205411 2€154 11 -2 QO ❑ 5(7 205450 850 00 7054 75 070 205460 800 -1 89 050 2000 205406 205436 205436 -2 00 050 205475 90000 205516 082 205503 8 00 -1 62 085 2006 2054 49 2054 79 205461 -350 050 205500 95000 205555 4 78 avss aa 800 -1 38 082 2000 205490 2055 20 205505 -3 25 088 205544 100000 2[]55 Sfi 062 205573 800 -1 63 0 58 2000 2055 79 2055 49 205530 -3 58 0 50 205569 105000 2056 U4 0 36 205595 8o0 -1 13 044 2000 205541 2055 71 205555 -3 33 0 50 205594 109977 2056 13 D 3D 205612 8 04 -0 88 034 20 O[3 205558 2055es 205580 -2 fi7 050 20561'9 J 140CUMEN1157196IPi1CfSGN2 YVB2 1 12/05197 RI~ m ~ rn s r > x' OTi tc ~ , ~ r- R, 14 r- ~ ~ 00a f~FE ~g ~a ~ ~~Q ~Ln M m ORGAHIC CARSOhI l"ESTINC dS REqUIRW FOR 71FiiE TOP50fL op IF THE QRY4VELL GRATE 15 CREA7ER 1'1#API O.5' AB911E SQO 4~ 1% 4. . r E,ASEMEIVT DRAINAGE EA5EMEMT A5 SPECIFIECY ON R~.AN OR R.O.W. > T~?A OF BERM E9..EV.~ ~ TOP iF CUftB ELEV. I G113'TEFt + .20 FT. 9 FLQWLJNE 0 ~ I 1.5` SOD QI+1 TQPSOII. SOD CXlRE INl ET NORFAAL Gili7ER ~ INSTAUaED CONCURRENT YYITH 'wERGE UNE ~ JMAX OCfX]PAMCY QF RpJACEPfT HQUSE FCUqB m NORMAL GUTTER LINE Z: GiATE ELEVAI'Ibkl 4~ ~ ~ (TYP) dRAINAGE 3 ~ STRU ~.'~URE ~ i ~AX. • ~ Ci3NCRETE RPROV ~ 4" TNICK P,G.C. ~..y.~ 1 "-3" TbPS!?IL ON RR¢VID£ FILTER FABRIC (AMOCQ 4545 OR EQUAL) BETYYEEM GRRClED PDh![] Bt77TQM THE NAfiVE 5Q1L AND 7}lE 1NASHED bRAIN ROCK AAfp BETWEEN TFiE WA5'hfEp DRA1N ROCdL AND TNE DRYYVELt BARREL. GRAQED POND BOTTOM 1.1l'-1.28' eELow EDGE OF ASPFfAt7 SEC11O1V►4L MEW > T~?ICAL "208" POND WITH DRAINAGE STRUCTJRE ~ NOT TQ SCALE , ~ N ~ 0 J` ` • ~ A a _ FO/s yE"~~' NAL ss.,z• ~ ' I ~EXPIRES 06]11/99 m: pN N: I L a-05. 1'6; .E.5.~ IJTILITY [ ~ } €ASEMENT ~ 7 ~ 6 32' 8 5. ~4• 51DEWALK, UTILi TY, & •-TYPE "B" DRYWELL DRAINAGE , S7A 6+90, 27.5' LT EASEMENT GfiATE EL= 2053.11 ; , - - _ - 1. 37' ~ 5~ DR~4n~lAL~ EASENiEI~ f ~ I~ 8812' Id ` ; j"~' ~ r-~~~ , ~'2054 8C1LIN{-ARYr8F^LLVEL-/~ , FLAT BtJTTOM AREA. ~ 4' TYPE 1 C1.1R8 IPJLET- s • STA 7+01, LT TC EL-2054.01 7 • - ~ - ~ ~ PvND BaTraM EL=2052_61 12th AVENUE sCALE: 1°'-2o' ~ ' BERM EL-2054,21 ~ ~ • r ; f ~1 ~ I~LAND LOT 7, gLOCK 1 PACt~~C PARC CENTRE ENG1NEERING 707 West 7en • sutt$ 200 (sas) 458-6840 ~DA7E: 11 f 25/97/ , 5P€skarse. WA 99204 FAt• {5139} 45$-58" OOF ~ ! I wns s. ~ g ~ EQGE UF RSPHALT ~ ,pF1303 ~CS) ~-`,~`'~v~► ~~Q~ 10' PRkVATE 15XE~ U l~,s,~,~ ~ DRI►JEWAY EASEMENT ~ ExPdRES 06/11/99 f y ` - -m _ _ t f / 10' U11LIT`(~~ f ~ EASEMENT .....................................'a~ e.s.' . ~ . ~ ~ r r J . ! f . ~ . , LO 6 r . ~ 24' SqDEWALK, " t . UTILITY. & DRAINAGE ; 32' B 5 EASE~iE~i~T i ~ ' BDI~~IDARY OF LEVEL - - - - - ~ - - - - ` --BOUIJDAi~1' dF SWALE - - - - . FLAT gOTTOM AREA. BOTTDHf AREA. -=5 ..a..~... c51 s I'n r 25 ~ ~j--- DRAiNAGE EASEMENT _ 7TYPE T-t 4' TYPE 1 CfJRB fNLET 1 GURB INLET SgA 7+90, LT ~ - 5TA 7+fi5 , TC EL=2054.45 ~ TC EL= 2054.33 --TYFE "B" CL1RB 8 SCRLE: 1"=20, ~ - - ~ - ~ PC3ND B(7TfOM EL=2053.33 ~ 12th AVENUE BERM EL=2054.53 ~ IMLA[VD t ~LOT 6' BLVCf'\ 4 ~ PACIFIC PARC CIENTRE s - ~ ENGINEERING 707 wegt itn • suite zQa (sas) 458-6M DATE: 11/25/97 ~ ~ 5pokane. WA 99204 FAX: (509) 458-6844f ` ~ . ~ ~ wnsyM9s h DGE OF ASPHALT 10' PRIVATE ~ DRIVEWAY PRIVATE DRIVEWAY EASEMENT S~4NAL 88.12' ~EXPIRES 06/11/99 ~ , ~ 1o' unuTY - - - EASEMENT 25' B.S. ~ ~ N 2 5 . , . , , , , - - ~ , 32' B.S. ~ BOUNDARY OF LEVEL- / -24' SIDEWALK, FLAT BOTTOM AREA. - i ~ UTILITY, & ~ DRAINAGE . DRAINAGE EASEMENT- EASEMENT ~ - c~'--5r 5 'f 15' ~ I O0 1 i 88.12' ~.~••-••-••~~'c ~ , ~ ~ \ 4' TYPE 1 CURB INLET~ 2-~ 4' TYF~'E 1 CURB INLET STA 8+20, LT STA B. LT ~ TC EL=2054.85 T C T P E B U R E • . - - - 9 - SCALE: 1"=20' 12th AVENU E POND BOTTOM EL=2054.75 \ BERM EL=2055.05 ~ INLAND ~ ~LOT 5, BLOCK 1 ~ PACiFic PARC CENTRE ENQINEERINQ 707 west 7tn • sutte 200 (509) 458-6840 \ DATE: 11 /25/97 ` Spokane, WA 99204 FAX: (509) 458-6844.1 Q WASl' EDGE OF ASPHALT 10' PR{VA`fE mRlllEWAY ~ 13D371 ~ OlsxcR14 PRIVATE Df~I1~V~A~' ~►~SEME~vi 4NAL ~ 97.73' ~ I EXP1RES 06/ll 99 ~ ----~~~----a-- - 10' uT1LITY --_e._e- EASEMEN7 r ~ f ~ .A 25' 8.5............................... ~ ~ s-1 i3' WATER EASEMEId7 ~ f 't+l ~ ~t7 M ~ r + D v 4 ~ ~ • ~ ~ - BQUNDARY flF SWALE 32' B.S. 1 BDTTDM AREA. ~ _24 S1DEWAL ~ K, - .a-----~°° U TILITY, & C3RAIiVAGE ~ EASEMENT ~ - - ;,,25'.. :q 5.~ DR~IIPdAGE EA5EPIENT J ' 5' • ~ ~r.._.._. ~ . ; 4' TYPE 1 C~]RB INLET~ TYPE "B" CIJRB . STA 9+31, LT 4' Tl'PE 1 CURB INLET- ; TC EL=2055.27 STA 9+56, LT , TG EL=2055.47 ' 10 i ~ PoND BoTTOM EL=2o54.27 12tFa ►4VENUE - SGALE: 1°=2a' BERM EL=2055.47 ~ I NLAND 1 r ~ ~ PAcIFIC LC] T 4, BLOCK 1 _ ~ ENGINEERING P AR GCEN TR E 707 VVBS$ 7tfl • Suite 200 (509) 458-6840 [3A1'E. 11, /25/97 ` Spokane, WA 99204 FAX: (509) 458-6844♦ ~ 77.24' ~WAS ti p v: - 1 C~4071 V 3037 Qc•4' + C1 5 iE'~~~ /'0 NAL p Q ~ ~ EXPIRES 06{11 /99 ~ ~ ~ g I L I s` ---_.`--._--r- r.----`-`- I UTI LI TY EASEMEN T~ ~ 4 ~2- 3 ~ v ai 0 BDUNDARY DF SWALE--~- . BDT{rOM AREA. .................................32. 8.5....................................... 24' SIDEWALK, ~UTILfTY, 8t pRAIMAGE EASEMENT ~ f1RA[NAGE EASEM NT 5 57-~L7~ - - -'-5- - 205r, .~.I r 4' TYPE I cuRB iNLEr~ 2 \-a.' TYRE 1 cuR9.14CEr "-rrPE "g„ cuRe STA 1 d+2Cl, LT STA 1[]+4,5,--LT TG EL=2055.79 TC.E-=`f055.92 ~ PQND BOTTOM EL=2054.79 ~aERM EL=2055.99 12th AVENUE ScALE: 1'°=20 INLAND L0T 3, BLOCK 1 PACfFIC - P G CEN T~~ ~ ENGINEE,~ING 707 wast 7t, • sutee 200 [509) 458-6840 f]ATE: 1 i/25J97 r Sp°k-ane. Wn 99204 FAX (sns) 458-6844 ` ~ ~•,~`U` 4 ~W S %P , $5.79' 13(~37 ~ CE N EXPIREs as,lt t Iss PFiOPOSED bRAINAGE EASEMEtiT ~ c~ BdUNQARY OF LEVEL ' - FLAT BaTTOM AREA l E ~ ~ zo.5s' .....~.12.5[].6~,~ ~ . gs . TYPE °'A" ❑RYWELL ~ ~ ,d,~~ p71 • ' ' . . - W/ TYPE 4 METAL ~ _ • , , FRAME AND GRATE STA 11+$4, 21' L1` 12 50s .48~ GRATt EL=2050.23 I L-46.2}' ~ 4' TYF'E I CIJRB INLET ~ 45.~g. 5TA 12# Q(~. l~T 1NEDGE C~ RB TC EL=2050.96 12 + . iD' UTIL~TY~~ ~ EASEHIENT rn ~ ~Ff E~ ~AIve . . c ry . W ~ ~ i P V NV V PO~ID BQTTf7M EI.EU-2049.73 SCALE~ 1"=~0' ~ MINIMUM BERM ELEV=2051.1 fi J IN~AND 1 ~'LOT 20, BLOCK 1 ~ PACIFIC PARC CENTRE ENGINEER[NG 707 West 7tn • suite zoa (509) ¢sa-ssao OATE: t 1/25/s7 ~ 5pokone. WA 99204 FAx: (509) 458-8844, 1/ i WAS ~ Z ~ - - 89.79 ` LS ~ ,p 13037 6'15Tf-%, NAL ExPIREs 06l11I99 ~ . y ~ . . , ~ ~ LJ ~0-IC? 19 ° PR4PQSEa DRAINAGE EASEMENT ~~5c) _ B01lNDRRY QF LEVEL FLAr BoTToM AREa 17 50• 25' 50.~.. ~ d ,.,R.. TYPE "A" DRYWELL J~' k W/ 7YF'E 4 METAL - - - - - - - - - ~~50- i FRA~AE AND GRATE 5TA 11+84, 21 ` L7 GR pTE Et=2050. 23 L= 3.40' - ~ I ~ 14'4 ~JTiL1~.~_ WEQGE GURB 4' TYPE 1 CIJRB INLET-- . EaSEMENT STA 12+00, LT 11 Y -TC EL=2050.96 12 ~ - - , - . l I I fl LAEV G v C~ II ~ t [c th CT LW i ~ POND C SCALE. 1 "=20' PON❑ BOTTOM ELEV-2049.73 ~ MINIMUM BERM ELEV=2051.16 ~ INLAND 1 ~LC)T 19, BL+DCK 1 ~ PACiFic PARC CENTRE ~ ENGINEER1NG - 707 Hrest 7th • 5ulte 240 (509} 458-6840 [9ATE: 11,25/97 ~ Spakana. WA 99204 FAx: (509) 45$-6844., ~ "N Q L. ~ ,~j YV A S~,,I O ~ 4' TYPE 1 CURB INLET STA 10+69.1+5, RT. as TC EL =2051.79 11 ~ LAI~E 4F 1303 ~ ,a er sTtt~ . ` SIaNAL i 0° U'iiLfTY 'VVEDGE CURg EASEMtfv7 'IEXPIRES 06111/99 ~ - 4- -Z.' - ~ - ~4' TYPE I cURB iNLEr i, T~~ M1C3P61Nfi UF CUFtB RE7lJRN Ib TG EL=2051.46 • l . I~ ~(N ~ . l ~ ~ . . ..............zs' B.S. ~ i : ~ _ z4.~: 'J. J > n - L 34.94' r-. O ~ - - ~ -I-10.00' TYPE "8" DRYVVELL I W/ TYPE 4 METAL FRAME AND GRATE. 5TA 1 0+93, 40' RT ~ Q- GRATE EL-2050.73 15 \-BaUNOARr OF _LEvEL FLAr eorroM AReA \-PROPC3SER [3RAINAGE a EASEMENT q ~ 1 0~ ~ n N~ I ~ i r '~,-10' PRIvArE DRiVEwAY EASEMENT . EDGE OF ~ ~ ~ AsPr~ALr sa.oo~ L . 10' u`n~~r~ & DRAIHAGE ~ ~ ~ND D EASEMEyT = - PaND BdTTOAA ELEV=2050.23 SCALE: 1"-2D' MIlVIMLJM BERM ELEV=2051.66 ~ INLANQ ~ ~LOT 170 BLOCK 1 ~ PACrFIC PA R C CENTR E ENGINEERING . 707 west 7tn - suite 200 (sos) 45$-6840 ` 5pofeane. WA 99204 FAk: (609) 45$-6644, L, ~A3E: ~ 1~25J9~ ~ C,~P D "0 WASH~$ Or a ~ TYPE "B" DRYWELL 1 37 lN,j TYPE 4 METRL f ST E'~ FRAWAE & GR,R1'E cc STA 12+25, 21' RT ~ IVAL 111H LANE ~ cRATE EL=2050.23 ~ ir ~ EXPIRES fl6,~i 1 /99 ~ - a ]Ci' UTVLfTY 4' TYF'E 1 CClR851NC~T EASEMENT aTA 1 2+~D0, RT - Q TC EL=2[350.95 ~ WEDGE Cl1RB 37.37' '~-2 t 99 ~ L - - - 4y = T 1,6 iN ~ r? 2052 ~ ~I L ~ - - , ri k Z- ~s.8~' lUt]0-l ~ ° ..1 10' PRIVATE-N \-BQfJNDARY C7F LEVEL DiRIVEWAY I ~ FLAT Ba7TQM AREA EASEMENT ~ E c \-PROPaSED DRAINAGE 10° UTILITY-y- ° EASEMENT & QRAINAGE ~ EAS'~MENT ► i ~ EDGE t]F ■ ASPHALT ~ ~ r I E - 99.08' ~ . . . 1 POND E PQAiD B4TTQM ELEV-2049.73 SCALE: 1"_20' ` MINIMUM $ERM ELEV=2Q51.2F ~ INLANa ~ ~LOT 14, BL OCK 1 ~ PAciFIC PAR"C GENTRE ~ ENGINEER[NG _ 707 West 7!h • Suide 200 (569) 458-6840 9.~,~`J~~'~ `5pokcsne. IHA 99204 FAk: (509) 458-6644 ~ , ~ TYPE "8'° QRYWELL W,/ TYPE 4 METAL FRAME & GRATE ~ ~ 5TR 12+25, 21° RT ~ c.,., GRATE EL=2050.23 i 12 4° TYFE 1 CURB fNLET 5TA 12+00, RT ~ - ~ ~ ~ '~~L ~"C EL=2050.36 `4 ` ~~2DG37 WECIGE CUf:B ~A 10' U1ILITY EASEMENF ~ -4- r 6$.65 ~ ~ ~ ~ Y ~ ^ 1~ ~ ~ ~ i ~7`.~ f ' ' , , - - 20 - u' Y 7.4s- ~r as~',~ ~ • ~2 BC]UNQAf2Y 13F LE11EL • ' FLAT BQTTDM AREA PROP05ED DRAINAGE ` EASEMENT ~ n 00 _ 04 13 . co v ___--_-q_ ^ 2053 ~WA o ~ ,~a3 4. 0~s~E~~° t~ ONAL ~ EXPIRES 06/11 /99 ~ _ 85 00° i POND E SCALE: 1" =20' POIVD 80TTOM ELEV=2049.73 ~ MINCMUM BEfiM ELEV=2051.26 J' ~NLAN❑ ~ ~~~T 13y C]L'lJCK 1 ~ PAc[FiC PARC CENTRE ~ ENGINEERINQ 707 West 7th • Suite 200 (509) 458-6840 OATE; 11 /25,97 _ ` Spo&ane. dYA 99204 FAX: (509) 458-684411 / / ~ TYF'E "B" DRYWELL WA W/ T7fPE 4 iulEATL ~ FRAME & GRATE y ~ ~ STA 15+29, 22' RT ~ 11 ~H L~NE s cR~aTE EL=2050.21 ~ -BvuNoARr oF 73037 ~ ~ ~15T F.4' TYPE 1' CL1RB 1NL,ET 6OTTOhA AREA ~ NAL STA 16+22 38, RT TC EL= 2D50.94 , ~ EXPiR€5 06I1a f 99 ~ - 3Q.64` 1 'L=33.4t~ ' WEDGE- e~~8•L= 4.39' ~ ~ . f:URB 10' ~TILIn EASEMENT 10% 5' ~ L=4.67' , ..~rv~).. ~ ~3~ s' .25i' 8:5 . . 44.19' f ~ • ~ ~ I PRaPOsEd pRAINAGE' EASE'I+AENT' TYPE "B" CL1RB I 4 ~ Y~ rR ~ ~ < ud: 0! b S 1 L~.~ L) I cv~ f , POND G - ~ ~ 105_00' • ~ SCALE: If'_20e POIdD BOTTOM ELEV=2049.71 ~ MlNIMUM BERM ELEV=2051.14 ~ ♦ ~ INLAND ~ f LOT 1, BLOCK 1 ~ PAcIFIC PARC CENTRE ~ ENGINEERINCi 707 West 7th • 5uite 200 (509) 45E-6840 DATE: 11 ~25/°37 ~ SpckQne. WA 99204 FAx: {509} 458-6844~ s N'OTE: • ~ ~ ORGANlC GARBON TESTING 1S REQUIRED FQR THE 7[3ASC}IL ~ f+ ~ I~' TF~E dRYWELL GRf17E IS GREA7ER T~9AN 0.5i AB[JVE SQp AEASEMENT 13037 QR R. o. W. `S''S,~aNAL ~ DRAff~AGE EASEMENT AS SPECIFIE[~ ~QN PLF~N E7(R1RES 06 /ti 1 /99 ~ . ~ T+DP QF BERM ELEV.= GL1TfER ~l`OP ❑F CURB ELEV. FLOWLINE @ I+.2~ FT. 7.5" S0D ON TOF'Spll., 5OD , CURB ~3ROP I ~ INSiAL'LED CQNCURRENT V~17H i i OCCUPAfVCY DF ADJACENT hiQl1SE ~E "B!" CURB A~JD GUFTER ; 3 MAx. NC1fiMAL GUTTER LINE GRA3E ELEVATIQN ~ .4' 3: i (7YP) . v .5,-.6 7f ,ry^t4i'•~~ ,~l%ji\ • • RAINAGE 3: r~~x. canrcRErE APRON STFiUr,TURE .w . 4" T11-IiCK P.C.C. ~OTE: r , { PRflVIL3E FELTER FABR£C (AMOCC3 4545 OR EQUAL) BETWEEry 1"-3" TOP501L (3N } THE NATlwlE SDiL AND TFiE WASHED L RAIh! RC]CK AND BET+dEEN GRADEC] PONQ BOTTOM ; THE WASWED [3RAfN ROCK AND TFiE [3RYWELL BARREL. E GRADED P0ND BOTTf]M ~ ~IF TWQ OR MORE CURB INLETS ARE USED, SETi Pl7ND 8C}TTDM WITFi 3.11'-1.28' BELfl1iV' ~ RESPECT Tfl THE LOWEST CURB INLET GIJTTEF't FLOWLIIJE ELEVATIt3N EDGE aF ASPHAL3 0 ~ SECTl aN AL !fl EW ~ Nvr T4 sCALE ~ I'NLANb PAcIFic PARC CENTRE ~ENaiNEERING 12TH AVENU E'208' TAI D E L WI TH D R YWELL 707 wegt 7crr • surce avo (509) 458-6a4o oAYE: i i/z5/s7 `Spokona. WA 99204 FAX: (509) 458-5844 / ` LC3T 7 BLQGK 1 ~ Qwa ~ ~r ~ 13037 N O7E QRGAldIC CAR80N TESTIIdG 65 REQ~IIRED F01~ THE TQPSpIL ~+~NA~ IF GUTTER FL4WLINE 15 GREATER THAN 0.5' ABQVE SOD EASEMEIVT IEXPiRES 06/11,199 ~ C3R R. d. W. ~ DRAlNAGE EASEMEAiT AS SPECIFIE[7 ON PLAN d _ ~ ' ~ TOP OF BE'RM ELEV.= GuTTER . ~ TOP OF Ci3RB ELEV. FLC3WLINE @ I+.2a FT. 1.5" SC3L3 ON YOPSDIL, SO❑ CURE3 DROP ~ INSTALLED C❑NCURRENT VVITH , C3CCUPANGY OF ADJACENT HDL15E TYPE "B" CUR6 AND GUTTEFd 3 MAx. NORMAL GUTTER LINE 3:1 (Fl'P) , ' ~ • ° .~A .V~, ~ _ i~-~` ' i~ e•i•, :.r.,~;;.. - . . ~/s~/i~✓ CatiCRETE APRDN 4" TFi1CK P.C C. • 1F TWU OR IV~~]RE CURB IWLETS ARE ~JSER, SET Pt}NE? BO~OM WId~6 R E S P E C T T~ 3 T F i E L L' 3 V Y E 5T G L 1 F t S I N L E T G L J T T E~ 2 t] Y U L l~ iE E L E V A T I 0 3~ 1-3 TOPS~OIL ON ~RA~ED PQ1V[l Bb~'T~?M • GRADED POND BOTTOM SECTIONAL MEW .71'-,88' BEL°w - GUTTER FLOWLINE NaT 1`O SCALE ~ ~ INLANI3 ~ PAC1F`G PARC CENTRE ENC#INEERIHQ 12TH AVENUE '208' DETAIL WITHOUT aRY1NELL 747 West 7th • Suits 200 (509) 458-6844 bATE: 11 /25 J97 `~pokane. wA 99204 FAX: (509) 4'58-8844/ ` tOTS 3,4.5, & 6 BLC1CK 1 '