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<br />1
<br />12" OUTLET CULVERT i
<br />INVERT ELEV.6669
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<br />_ - I
<br />DESIGN W
<br />ELEV. (
<br />N
<br />SCALE: I'I =5
<br />VCONTOUR 11
<br />1 l
<br />/ I
<br />1 l
<br />_A1CCESS ROAD
<br />a - -
<br />0
<br />o
<br />..
<br />a
<br />TOP OF -EMBA
<br />TRASH RACK
<br />DESIGN WATER
<br />-CREST OF EMERGENCY SPILLWAY
<br />NATURAL GROUND CREEK
<br />STORAGE LEVEL _ _/p "OUTLET _CULVERT._ t
<br />J 3YEARSEDIMENTLEVEL 1 W /ANTISEEPCOLLARS(a l0 SPACING FLAP VALVE
<br />BOTTOM C
<br />POND
<br />EMBANKMENT CROSS SECT 10
<br />TYPICAL
<br />NO SCALE
<br />28 25.9_ ^ _ 10 YEAR _24 HOUR EVENT LEVEL_
<br />24 23.0 STORAGE LEVEL I
<br />20
<br />� I
<br />STAGE t6 1 1
<br />(FEET) I I
<br />8 8.0_ �•
<br />ISEDIMENT STORAGE
<br />4 LEVEL I
<br />I
<br />0 16.0 131.4 138.2
<br />0 0.3 6.0 9.0 12.0 15.0 18.0 21.0 240 270 30.0 33.0 36.0 39.0 42.0
<br />STORAGE (ACRE FEET)
<br />STAGE-STORAGE CURVE
<br />t
<br />SEDIMENT POND -M3 -S' - EMBANWIENT- DESIGN
<br />Elevation
<br />Area
<br />Average Area
<br />Depth
<br />Volume
<br />Cumm Vol
<br />(feet)
<br />(sq ft)
<br />(sq ft)
<br />(feet)
<br />(ac ft)
<br />(ac ft)
<br />6,647.0
<br />5,940
<br />8,849
<br />1.0
<br />0.20
<br />0.20
<br />6,648.0
<br />11,757
<br />21,540
<br />2.0
<br />0.99
<br />1.19
<br />6,650.0
<br />31,322
<br />-
<br />37,255
<br />2.0
<br />1.71
<br />2.90
<br />6,652.0
<br />43,188
<br />47,801
<br />2.0
<br />2.19
<br />5.09
<br />' 6,654.0
<br />52,414
<br />54,634
<br />2.0
<br />2.51
<br />7.60
<br />6,656.0
<br />56,855
<br />-
<br />58,818
<br />2.0
<br />2.70
<br />10.30
<br />6,658.0
<br />60,782
<br />62,816
<br />2.0
<br />2.88
<br />13.18
<br />6,660.0
<br />64,849
<br />66,972
<br />2.0
<br />3.67
<br />16.25
<br />' 6,662..0 a
<br />69,094
<br />71,488
<br />2.0
<br />3.28
<br />19.53
<br />6,664.0
<br />73,883
<br />76,758
<br />2.0
<br />3.52
<br />23.05
<br />6,666.0
<br />79,633
<br />82,893
<br />2.0
<br />3.81
<br />26.86 -
<br />6,668.0
<br />86,153.
<br />89,845
<br />2.0
<br />4.13
<br />30.99
<br />6,670.0
<br />93,538
<br />98,664
<br />2.0
<br />4.53
<br />35.52
<br />• .6,672.0
<br />403,789
<br />113,113
<br />2.0
<br />5.19
<br />40.71 -
<br />6,674.0
<br />122,438.'.
<br />_ ..
<br />RAGE CAPACITY TA
<br />Base Elevation (feet) 6,647.0
<br />Sediment Storage Elevation (feet) 6,655.0
<br />Outlet Culvert Invert Elevation (feet) 6,670.0
<br />10 Year -24 Hour Event Elevation (feet) 6,672.9
<br />Emergency Spillway Invert Elevation (feet) .6,674.0
<br />Embankment Elevation (feet) 6,677.0
<br />ELEVATION TABLE
<br />Embankment Design
<br />Design Sediment Volume (acre -feet) 6.0
<br />Design Storage Volume (acre -feet) - 25.4
<br />Design Runoff Volume (acre -feet) 6.81
<br />Total Design Volume (acre -feet) 38,2
<br />Principal Outlet Design
<br />Maximum Outlet Head (feet) 2,9
<br />Outlet Pipe Diameter (inches) 12
<br />Maximum Discharge (cfs) 2.14
<br />Theoretical Detention Time (hours) 55.
<br />((a average how)
<br />Emergency Spillway Design n ^
<br />Design Peak Discharge (cfs, 100 year -24 hour event), 144.68
<br />_
<br />- - 'PrincTpaT 6uife sc arge (c s -
<br />Emergency Spillway Design("'�charge (cfs) 142.53
<br />f Emergency Spillway Width ( „vet) '30 -
<br />Spillway Discharge Flow Depth (feet) 1.33
<br />Freeboard (feet) 1.67
<br />DESIGN
<br />�jCRITERIA_ it������p
<br />Pe t Number C O `1 - o U Q
<br />Class. OPeonn I y
<br />Secdon/Elallba: _ _ _ NOV 2, v 10P 3
<br />. i Class: ❑ Revision _ -.-.-.-.-.- ._._._._._.- .- .- .- .- ._.- . -._. -.
<br />rvpeseq: ;
<br />Class: D Report O HyEro OGeneral - --- ----- -- -- ---- ---- '--- ' - - - --' MiNED LAND
<br />Dxrvpe: ___ RECLAMATION DIVISION
<br />ClApppliration (Cost only) O SaIA Enforcament�lnspedion
<br />1, RICHARD J. BILBAS 9 A REGISTERED ENGINEER IN THE
<br />STATE OF COLORADO, DO HEREBY CERJIFY TkiAT THE DESIGNS
<br />FOR MINE No.3 SEDIMENTATION POND M3 -S DESIGR ARE --,-
<br />CORRECT TO THE BEST OF MY KNOYJLEDGE AND BELIEF.
<br />zz-
<br />RICHARD J. EfILBAS DATE
<br />COLORADO P,E. No. 23210
<br />Colorado Ya a Coal Comparl�
<br />A SUBSIDIARY OF CYPRUS STERN COAL EQUIPMENT OMPA Y
<br />29588 ROUTT COUNTY ROAD • OAK CREEK, COLORADO 80467
<br />DRAW N
<br />DATE BY
<br />6/86 KLS
<br />DESIGNED
<br />DATE BY SEDIMENTATION PO ND
<br />'
<br />REVISED II m 3. S ll
<br />DATE BY �i
<br />-12f- VI-S DES I GN
<br />lim
<br />SCALE TOWNSHIP RANGE
<br />1 "= 50' i
<br />
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