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XREF: CE470, CP470, EX470, PL470, SP470, UE470, UP470
<br />G:\DWG\01\470 - Avista MOB 11\470DRAIN.DWG
<br />E
<br />a
<br />N
<br />JAG 7/25/02
<br />COAL CREEK RANCH
<br />TILING NO. 3: I
<br />LOUISVILLE CAMPUS
<br />vi
<br />EX. 15" RCP TO STORM SEWER
<br />IN COAL CREEK FILING No. 3
<br />IQR,00= 21.93CFS (PROPOSED
<br />•QR,�= 30.7CFS (ALLOWABLE)
<br />PER COAL CREEK RANCH--
<br />•F#3 FINAL DRAINAGE REPORT -N.'
<br />BY HURST & ASSOC.
<br />JAN. 2, 1990
<br />QR,00= 34.4CFS (ALLOWABLE)
<br />°PER HURST & ASSOC.
<br />REPORT, COAL CREEK
<br />t ' RANCH, F#2
<br />1 JAN. 2, 1990
<br />PICKUP IN GRATED LID
<br />MH CSA 21+90± OF 88TH
<br />,\ CONSTRUCTION.
<br />REPORT FOR
<br />PROPOSED.
<br />DURING
<br />•1 FUTURE POND*
<br />F5.2
<br />FUTURE POND*
<br />F6
<br />POND E2 TO REMAIN AS IS. .>c.'
<br />DETENTION REQUIRMENTS FOR' \\
<br />BASIN D2 ARE IN
<br />/ POND Ell
<br />COAL CREEK
<br />GOLF COURSE
<br />QR,00=25CFS (ALLOWABLE)
<br />PER P.U.D. DRAINAGE REPORT
<br />"'FOR BOULDER VALLEY'-"" "e*'"
<br />SCHOOL DISTRICT
<br />LOUISVILLE CAMPUS
<br />_BY CHARLES KEIM & ASSOC.
<br />MAY 1996M..
<br />STREET IMPROVEMENTS
<br />CONSTRUCTION
<br />Q88TH ST,o,=3.73CFS
<br />QAVIS11A,00=4.49CFS
<br />QCAPACmr=25±CFS
<br />LEGEND
<br />209.1
<br />902,ANSIp
<br />(,FOR 2001 EXPANSION
<br />iSTORM SEWER DESIGN
<br />'SEE PUD DRAINAGE REPORT'', . 1
<br />BY CHARLES KEIM & ASSOC.
<br />--5/16/01 & FINAL ; i (175,1/:
<br />CONSTRUCTION PLANS 8/17/011 /.
<br />. .I'
<br />24"X38" -ST
<br />CENTENNIAL PEAKS
<br />HOSPITAL
<br />70
<br />09,
<br />HISTORIC BASIN IDENTIFIER
<br />BASIN AREA (ACRES)
<br />DEVELOPED BASIN
<br />BASIN AREA (ACRES)
<br />PROPOSED SUB BASIN
<br />BASIN AREA (ACRES)
<br />HISTORIC BASIN BOUNDARY
<br />DEVELOPED BASIN BOUNDARY
<br />PROPOSED SUB BASIN BOUNDRY
<br />DRAINAGE DIRECTION ARROW
<br />DESIGN POINT
<br />PROPOSED STORM SEWER
<br />EXISTING STORM SEWER
<br />PROPOSED CONTOURS (1' INTERVAL)
<br />EXISTING CONTOURS (1' INTERVAL)
<br />COAL CREEK
<br />MEDICAL CAMPUS
<br />\42" -ST
<br />APPROX LOC OF NUISANCE
<br />FLOW STORM SEWER
<br />DETAILS TBD AT
<br />CONSTRUCTION PHASE
<br />9'Wx9'Lx 1.3'Dt
<br />TYPE L RIPRAP
<br />:;...••
<br />x\ �\.---
<br />■■••-- 'OUTLET
<br />6'Wx6'Lxl.3'D.W " t \
<br />TYPE L RIPRAP
<br />ty,
<br />BOULDER VALLEY
<br />SCHOOL DISTRICT
<br />LOUISVILLE CAMPUS
<br />CAMPUS
<br />DRIVE
<br />36" -ST
<br />* FUTURE PONDS SHOWN ARE
<br />SCHEMATIC ONLY
<br />Sub Design
<br />Basin Point
<br />A 50
<br />B 51
<br />C 52
<br />D 53
<br />E 54
<br />F 55
<br />Pond
<br />El
<br />E2
<br />E3
<br />F5.1
<br />F5.2
<br />F6
<br />F 1 0
<br />Total
<br />(1)ALL FUT
<br />ASSUMED
<br />ON FINAL
<br />ADJUSTED
<br />5' TYPE
<br />R INLET.
<br />18" -ST.
<br />SPILLWAY
<br />5.5'Wx2'Lx1.3'D
<br />TYPE L RIPRAP
<br />D50=9"
<br />UDFCD WQCV OUTLET STRUCTURE
<br />WITH OVERTOPPING SPILLWAY OPTION
<br />88th STREET CULVERT
<br />QR1 83.8CFS (ALLOWABLE)
<br />PER DRAINAGE REPORT FOR
<br />88TH STREET IMPROVEMENTS
<br />BY CHARLES KEIM & ASSOC.
<br />(ALSO IN APPENDIX OF P.U.D..
<br />DRAINAGE REPORT FOR
<br />BOULDER VALLEY SCHOOL
<br />DISTRICT LOUISVILLE CAMPUS
<br />BY CHARLES KEIM & ASSOC.
<br />MAY 1996).
<br />PROPOSED FLOWS
<br />A
<br />(arec!
<br />0.15
<br />2.01
<br />1.16
<br />4.28
<br />3.84
<br />13.37
<br />SURFACE
<br />Q1 oo
<br />(cfs)
<br />1.28
<br />15.79
<br />7.98
<br />25.68
<br />37.50
<br />45.42
<br />Q5
<br />(cfs)
<br />0.63
<br />7.36
<br />2.66
<br />14.70
<br />5.11
<br />6.95
<br />CUMULATATIVE
<br />Q100 Q5
<br />(cfs) (cfs)
<br />1.28
<br />16.98
<br />24.51
<br />25.68
<br />37.48
<br />45.42
<br />POND SUMMARY TABLE
<br />. V100Rpuir-
<br />(ft3)
<br />17,588
<br />14,174
<br />42,640
<br />27,505(1)
<br />18,561(1)
<br />18,974(1)
<br />18,575
<br />158,017
<br />V10Rrquirod QR,00
<br />(ft3) (ft3/s)
<br />9,570..... . , ._.,.....22.0(2)
<br />8,073
<br />24,930
<br />16,071(1)
<br />10,845(1)
<br />11,087(1)
<br />13,683
<br />94,259
<br />3.0
<br />8.2
<br />5.3
<br />3.6
<br />3.7
<br />3.3
<br />QR10
<br />(ft3/s)
<br />5.3(2)
<br />2.6
<br />2.0
<br />1.3
<br />0.9
<br />0.9
<br />0.8
<br />0.63
<br />7.73
<br />10.51
<br />14.70
<br />11.77
<br />45.42
<br />d,00
<br />(ft)
<br />3.9'
<br />2.9'
<br />5.3'
<br />N.A.
<br />N.A.
<br />N.A.
<br />3.0'
<br />URE REQUIRED DETENTION VOLUMES ARE CALCULATED BASED UPON
<br />IMPERVIOUSNESS 1=75%. IF THE COMPOSITE I CALCULATED BASED
<br />CONSTRUCTION PLANS DIFFERS, THE DETENTION VOLUMES SHALL BE
<br />ACCORDINGLY.
<br />(2)POND El RELEASE RATES INCLUDE BASIN D2.
<br />SWALE X -X
<br />NTS
<br />Q1oo = 37.50 cfs
<br />d = 0.92'
<br />V = 5.88 ft/s
<br />s = 4.0% ±
<br />SWALE Y -Y
<br />NTS
<br />Q1oo = 45.42 cfs
<br />d = 0.55'
<br />V = 3.80 ft/s
<br />s = 3.33%
<br />SCALE: 1" = 100'
<br />100 0 50 100 200
<br />2301 BLAKE ST., STE. #100
<br />DENVER, COLORADO 80205
<br />303.861.8555 F.303.861.3027
<br />0137 MAIN STREET . UNIT C106
<br />POST OFFICE BOX 2711
<br />EDWARDS, COLORADO 81632
<br />970.926.8960 F.970.926.8961
<br />is
<br />CHARLES I(E/AIMASSOCIATES; INC
<br />Consulting Engineers
<br />1711 15TH ST., SUITE 200
<br />BOULDER, CO 80302
<br />303.447.0090 F 303.447.9141
<br />1 I A
<br />2620 East Prospect Road, Suite 100
<br />Fort Collins, Colorado 80525
<br />(970) 493-8747
<br />(303) 296-0383
<br />ISSUE/REVISION DATE NO.
<br />FINAL PUD SUBMITTAL 3/21/02
<br />CITY COMMENTS 5/7/02
<br />OWNER COMMENTS 5/28/02
<br />BOUNDARY REVISION 7/26/02
<br />AVISTA ADVENTIST
<br />HOSPITAL
<br />100 HEALTH PARK DR.
<br />LOUISVILLE, CO
<br />CENTURA HEALTH
<br />FINAL PUD
<br />DRAINAGE PLAN
<br />DRAWN BY AEA
<br />CHK'D BY CRK
<br />SHEET FILE
<br />470DRAIN.DWG
<br />COPYRIGHT 2000 BY DAVIS PARTNERSHIP P.C.
<br />SHEET NUMBER:
<br />10 OF 12
<br />D.P.A. PROJECT # 0161100
<br />
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