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RIPRAP - 050 = 6" <br />EMERGENCY SPILL WA)' <br />DITCH .4j? <br />i <br />30" CMP <br />A I / /- CREST OF EMBANKMENT - ELEV 7549.0' <br />7530 <br />7535 <br />11 <br />7540 <br />1 7545 <br />II TOP OF EMBANKMENT - ELEV. 7549.0' <br />ki <br />40 <br />42" CMP RISER <br />7540 \l <br />�- ._------ �-------- - - - - -- - -- -- -7550 ---------- - - -��J ± <br />A o/TCh <br />l0 YR / 24 HR EVENT - ELEV. 7546.9' <br />25 YR / 24 HR EVENT - ELEV. 7548.0' <br />SEDIMEN TA TION POND <br />PLAN VIEW <br />SCALE.- I " -40' <br />CONTOUR INTERVAL: 5' <br />A <br />7570 <br />25 YR / 24 HR EVENT <br />7560 ELEV. 7548.0' <br />7550 1 3 <br />7540 /0 YR / 24 HR EVENT <br />ELEV 7546.9' <br />7530 DESIGN SEDIMENT LEVEL <br />ELEV 7539.20' <br />i <br />M-PLA <br />No. 4 <br />42" CMP RISER <br />INVERT ELEV. 7548.1' <br />FREEBOARD - 10' <br />TOP OF EMBANKMENT <br />ELEV. 7549.0' <br />J 1 NA TURAL <br />- ?----- --- - - - - -- 2 - - - - -- <br />30" CUP <br />4" ORIFICE EMERGENCY SP11 <br />INVERT ELEV. 7539.2' ELEV, 7547.0' <br />SEDIMENTATION POND No. 4 <br />CROSS SECTION A -A ' <br />HORIZONTAL SCALE I " =20' <br />VERTICAL SCALE: I "=20' <br />A' <br />7570 <br />7560 <br />Z <br />7550 <br />ROUND <br />7540 <br />7530 <br />WA Y <br />7520 <br />B TOP OF EMBANKMENT - ELEV. 7549.0' 81 <br />7580 <br />7580 25 YR / 24 HR EVENT - ELEV. 7548.0' <br />'3 <br />z lO YR / 24 HR EVENT - ELEV. 7546.9' 7560 <br />7560 <br />Q <br />7540 LLJ <br />7540 � <br />DESIGN SEDIMENT LEVEL - ELEV. 7539.2' <br />7520 <br />7520 <br />EDIMEN TA TION POND No. 4 <br />CROSS SECTION B -B' <br />HORIZONTAL SCALE. I " --40' <br />VERTICAL SCALE: I "=40' <br />r <br />LL <br />W <br />Q <br />N <br />APPROX /MA TE <br />EMBANKMENT <br />SURFACE <br />STORAGE <br />STAGE <br />ELEVATION <br />(FT) <br />AREA <br />IAC -FT) <br />CAPACITY <br />(AC -FT) <br />COMMENTS <br />FLOW <br />0.0 <br />7535.0 <br />0.01 <br />0.00 <br />FLOW W <br />LENGTH <br />1.0 <br />7536.0 <br />0.03 <br />0.02 <br />BOARD <br />INACTIVE <br />2.0 <br />7537.0 <br />0.06 <br />0.07 <br />/X/ <br />BW/FT1 <br />3.0 <br />7538.0 <br />0.10 <br />0.15 <br />/INCHES/ <br />CREST <br />4.0 <br />33 <br />2.0 <br />0.26 <br />0.035 <br />0.97 <br />4.2 <br />4.7 <br />0.29 <br />DESIGN SEDIMENT LEVEL, 4" ORIFICE <br />5.0 <br />0.41 <br />6.0 <br />1 <br />M7543.00,29 <br />0.60 <br />7.0 <br />0.83 <br />8.0 <br />9 <br />1.10 <br />9.0 <br />7544.0 <br />0.34 <br />1 1.41 <br />10.0 <br />7545.0 <br />0.39 <br />1.77 <br />ACTIVE <br />11.0 <br />7546.0 <br />0.44 <br />2.19 <br />11.9 <br />7546.9 <br />0.48 <br />2.61 <br />10 YR / 24 HR EVENT <br />12.0 <br />7547.0 <br />0.49 <br />2.65 <br />EMERGENCY SPILLWAY INVERT <br />13.0 <br />7548.0 <br />0.53 <br />3.16 <br />25 YR / 24 HR EVENT <br />14.0 <br />7549.0 <br />0.58 <br />3.72 <br />SEDIMEN TA TION POND No. 4 <br />CAPACITY TA BL E <br />0 0.5 1.0 1.5 2.0 2.5 �.v 3.0 w.0 <br />FREEBOARD <br />STORAGE (AC-FT) <br />SEDIMENTATION POND No. 4 <br />S TA GE / STORAGE CURVE <br />U J I <br />l- 2 <br />2 <br />RIPRAP <br />I BW (WHERE REQUIRED/ <br />TYPICAL CHANNEL SECTION <br />NO SCALE <br />SEDIMENTATION POND No. 4 <br />CROSS SECTIOW B -B' <br />ED <br />VIT t G � ='1 <br />Mmes Land <br />Reclamation Div!YRt5FESSIONAL ENGINEER'S CERTIFICATION <br />1, Mork S. Cholme, ..;.au;����ify thot this mop <br />WGS prepared #0 9� !S° envision and all <br />the informoti�Y'�sAg eon is true <br />and correct tot e 6estF f y knowledge <br />and lnforma*n 25653 # <br />)a1S91 <br />Dote <br />CO P. E.25653 <br />DESIGN <br />BOTTOM <br />FLOW <br />FREE- <br />RIPRAP <br />CHANNEL <br />FLOW W <br />LENGTH <br />SLOPE <br />W10TH <br />MANNINGS <br />DEPTH, <br />BOARD <br />VELOCITY <br />050 <br />SECTION <br />fors/ <br />IFTI <br />/X/ <br />BW/FT1 <br />N <br />D/FT1 <br />IFT/ <br />fFPS/ <br />/INCHES/ <br />CREST <br />36.14 <br />33 <br />2.0 <br />1 5 <br />0.035 <br />0.97 <br />1.0 <br />4.7 <br />6 <br />SEDIMENTATION POND No. 4 <br />CROSS SECTIOW B -B' <br />ED <br />VIT t G � ='1 <br />Mmes Land <br />Reclamation Div!YRt5FESSIONAL ENGINEER'S CERTIFICATION <br />1, Mork S. Cholme, ..;.au;����ify thot this mop <br />WGS prepared #0 9� !S° envision and all <br />the informoti�Y'�sAg eon is true <br />and correct tot e 6estF f y knowledge <br />and lnforma*n 25653 # <br />)a1S91 <br />Dote <br />CO P. E.25653 <br />STEAMBOAT SPRINGS, CO 80477 <br />No. <br />REVISION <br />DATE <br />BY <br />CHKD <br />THE ROCKCASTLE COMPANY <br />GRASSY CREEK COAL MINE Nod <br />POND 4 DESIGN <br />IScale: <br />A. N. <br />Date: <br />10191 <br />Design By: Drawn By: <br />TEL TWS <br />Approved By: <br />TEL <br />A13Z Inc MAP R -3 <br />STEAMBOAT SPRINGS, CO 80477 <br />