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70757080707570707065 7065707070757080708570707065706070557050 7045704070357070708070757065706070557050705070557060 706570700+000+100+200+300+400+500+000+501+001+502+002+503+003+504+004+505+000+000+501+001+502+00BB'AA'CC'0+200+400+600+801+001+201+401+601+802+002+202+402+602+803+003+203+403+603+804+004+204+404+604+8070457050705570607065707070757045705070557060706570707075Section A - A'0+000+200+400+600+801+001+201+401+601+802+0070507055706070657070707570807050705570607065707070757080Section B - B'0+000+100+200+300+400+50706570707075706570707075Section C - C'AA'BB'CC'24'3H:1V3H:1VPond Bottom3H:1V15.0'5.0'EMERGENCY SPILLWAYEL. 7066.0, (TOP OF RIPRAP)EMBANKMENT CRESTELEV. 7071.0EMBANKMENT DETAILSPOND BOTTOMEL. 7048.0PRINCIPAL SPILLWAY WITH ANTI-VORTEX TRASH RACKTWO 3" DIA. PERFORATIONS, EL. 7057.018" SLIDING GATE VALVE, EL. INVERT 7050.03131DOWNSTREAMUPSTREAMEL. 7061.0, RISER IS 18" DIA. GALV STEEL CMP24" Ø GALV STEEL CMP7048704970507051705270537054705570567057705870597060706170627063706470657066706770687069707070710.001.002.003.004.005.006.007.00PRIMARY SPILLWAY (7061)EMERGENCY SPILLWAY (7066)TOP OF STRUCTURE(7071)Accumulative Storage (Acre-Ft)Elevation MSL <br />Stage Storage CurveMiddle Pond0Storage Volume ComputationsELEV.(ft)AREA(ac)AVG.AREA(ac)INTERVAL(ft)STORAGE(ac-ft)ACC.STORAGE(ac-ft)STAGEINTERVAL(ft)7048.000.00007049.000.00880.00441.000.00470.00471.007050.000.02090.01491.000.01480.01952.007051.000.03560.02831.000.02880.04833.007052.000.05040.04301.000.04360.09194.007053.000.06340.05691.000.05680.14875.007054.000.07830.07091.000.07080.21956.007055.000.09500.08671.000.08660.30617.007056.000.11260.10381.000.10370.40998.007057.000.13240.12251.000.12230.53229.007058.000.15790.14521.000.14610.678310.007059.000.18300.17041.000.17040.848711.007060.000.20990.19641.000.19631.045012.007061.000.24820.22911.000.23131.276313.007062.000.28440.26631.000.26641.542614.007063.000.32720.30581.000.30641.849015.007064.000.37110.34921.000.34982.198916.007065.000.41750.39431.000.39472.593617.007066.000.46500.44131.000.44163.035118.007067.000.52250.49371.000.49403.529219.007068.000.57550.54901.000.54994.079120.007069.000.62830.60191.000.60184.680921.007070.000.68470.65651.000.65645.337322.007071.000.75970.72221.000.72116.058423.00PERFORATION ELEVATION (7057)SNEWContour Interval = 1 Ft.CHKBYDATENo.REVISIONDRWG NO.APPROVED BY:TonyDRWG. BY:4/18/18DATE:As ShownSCALE:Middle PondColowyo Coal Company5731 State Highway 13Meeker, Colorado 81641COALCOMPANYSAFETY-PEOPLE-PRODUCTION-ENERGYScale 1" = 20'Scale 1" = 25'Scale 1" = 40'As-BuiltPWFigure 7-23I-1Note: A staff gauge is installed inside the pond near the primary discharge.BCTony3/25/19199Added Staff Gauge NoteMR-LESTony4/28/22154Revised Drawing NumberTR-I, LEE E. SAMPSON, hereby certify that this map has been reviewed by me and is trueand correct to the best of my knowledge andinformation, relying on information suppliedby experts employed by Colowyo Coal Company or qualified consultants working for Colowyo Coal Company, and that I am aProfessional Engineer licensed in Colorado asrequired by the provisions of C.R.S. 12-25-101 through C.R.S. 12-25-119. IN ENGINEERS CERTIFICATIONWITNESS WHEREOF, I have hereunder set my hand and affixed my seal.4/28/22