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EXISTING POSTMINE CHANNEL <br />3:1 OR FLATTER <br />LIMITS OF <br />FRONT VIEW <br />6 -18" DIAMETER PIPE <br />----MAX 10' <br />SPILLWAY <br />1 <br />n <br />10' <br />PROFILE VIEW <br />EXISTING GROUND <br />8 I -6 -18" DIAME PIPE <br />ROCK ENERGY <br />DISSIPATER AT OUTFALL <br />TOP VIEW <br />07 -31 -12 <br />ENERGY <br />ATER AT OUTFALL <br />CHANNEL <br />PLAN VIEW <br />• STRUCTURE CAPACITY <2 ACRE -FEET <br />• EMBANKMENT <br />fa 8 FEET HIGH <br />COMPACTED FILL <br />KEYWAY 3' X 10' COMPACTED <br />• SPILLWAY - CONSTRUCTED TO SAME DIMENSIONS AS POSTMINE CHANNEL <br />(SEE APPENDIX 13 -12.3) <br />• 2 - (6 -18) INCH PIPES INSTALLED TO PROVIDE STRUCTURE DEWATERINC <br />(OPEN END T WITH SLOTTED RISER ATTACHED TO EACH PIPE) <br />• EMBANKMENT WILL BE TOPSOILED <br />• EMBANKMENT WILL BE SEEDED WITH A MESIC DRAINAGE SEED MIX <br />• EACH STRUCTURE WILL BE FIELD FIT <br />SCALE <br />10 0 10 20 <br />SENECA YOAST MINE <br />1tE: <br />TYPICAL <br />RUNOFF CONTROL STRUCTURE <br />aw ra rs.. <br />DR— OY: Mc /x xwE narfc <br />u scr 7o-i <br />8,>6 -18" DIAMETER PIPE <br />I I <br />II 2.5:1 SLOPE <br />FL <br />II MAX. 10' TOP EMBANKMENT <br />I I <br />II <br />2.5:1 SLOPE <br />rRM <br />II <br />II <br />ROCK ENERGY <br />DISSIPATER AT OUTFALL <br />TOP VIEW <br />07 -31 -12 <br />ENERGY <br />ATER AT OUTFALL <br />CHANNEL <br />PLAN VIEW <br />• STRUCTURE CAPACITY <2 ACRE -FEET <br />• EMBANKMENT <br />fa 8 FEET HIGH <br />COMPACTED FILL <br />KEYWAY 3' X 10' COMPACTED <br />• SPILLWAY - CONSTRUCTED TO SAME DIMENSIONS AS POSTMINE CHANNEL <br />(SEE APPENDIX 13 -12.3) <br />• 2 - (6 -18) INCH PIPES INSTALLED TO PROVIDE STRUCTURE DEWATERINC <br />(OPEN END T WITH SLOTTED RISER ATTACHED TO EACH PIPE) <br />• EMBANKMENT WILL BE TOPSOILED <br />• EMBANKMENT WILL BE SEEDED WITH A MESIC DRAINAGE SEED MIX <br />• EACH STRUCTURE WILL BE FIELD FIT <br />SCALE <br />10 0 10 20 <br />SENECA YOAST MINE <br />1tE: <br />TYPICAL <br />RUNOFF CONTROL STRUCTURE <br />aw ra rs.. <br />DR— OY: Mc /x xwE narfc <br />u scr 7o-i <br />