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07 -31 -12 <br />3:1 OR FLATTER <br />LIMITS OF EXCAVATION <br />EXISTING POSTMINE CHANNEL <br />SPILLWAY <br />FRONT VIEW <br />5S• 2.5 <br />—MAX 10' <br />KEYWAY <br />10' <br />PROFILE VIEW <br />EXISTING GROUND <br />ROCK ENERGY <br />DISSIPATER AT OUTFALL <br />TOP VIEW <br />6 -18' DIAMETER PIPE <br />SPILLWAY <br />5 TRM <br />10 <br />0 <br />SCALE <br />OCIC ENERGY <br />DISSIPATER AT OUTFALL <br />ORIGINAL CONTOURS <br />• STRUCTURE CAPACITY <2 ACR <br />• EMBANKMENT <br />— S 8 FEET H <br />— COMPACTED <br />— KEYWAY 3' <br />• SPILLWAY — CONSTRUCTED TO <br />(SEE APPEND! <br />• 2 — (6 -18) INCH PIPES INSTI <br />(OPEN END T WITH SLOTTEE <br />• EMBANKMENT WILL BE TOPSOIL <br />• EMBANKMENT WILL BE SEEDED <br />• EACH STRUCTURE WILL BE FIE <br />10 <br />20 <br />EXISTING POSTMINE CHANNEL <br />LIMITS OF EXCAVATION <br />PLAN VIEW <br />• <br />E —FEET <br />TOP EMBANKMENT <br />TOP EMBANKMEN <br />IGH <br />FILL <br />X 10' COMPACTED <br />SAME DIMENSIONS AS POSTMINE CHANNEL <br />13 -12.3) <br />LLED TO PROVIDE STRUCTURE DEWATERING <br />RISER ATTACHED TO EACH PIPE) <br />ED <br />WITH A MESIC DRAINAGE SEED MIX <br />LD FIT <br />S 'ENECA <br />Coal Company <br />MEMEL: <br />SENECA YOAST MINE <br />GRAVING TITLE <br />TYPICAL <br />RUNOFF CONTROL STRUCTURE <br />DRAM sr RK /1C <br />M.1 t 01.j_ <br />sr. <br />SCAM <br />AS Sam <br />naaC <br />20-2 <br />