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10 -01 -12 <br />EXISTING POSTMINE CHANNEL <br />LIMITS OF EXCAVATION <br />4 <br />ROCK ENERGY <br />DISSIPATER AT OUTFALL <br />1 <br />FRONT VIEW <br />TOP VIEW <br />55' <br />I <br />MAX. 8' ) 6 -18" DIAME ' PIPE <br />MAX 10' <br />PROFILE VIEW <br />EXISTING GROUND <br />6 -18" DIAMETER PIPE <br />SPILLWAY <br />2.5 <br />10 <br />TRM <br />OCK ENERGY <br />DISSIPATER AT OUTFALL <br />ORIGINAL CONTOURS <br />EXISTING POSTMINE CHANNEL <br />0 <br />SCALE <br />10 <br />LIMITS OF EXCAVATION <br />PLAN VIEW <br />• STRUCTURE CAPACITY <2 ACRE —FEET <br />• EMBANKMENT <br />— S 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 DEWATERING <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 />20 <br />PROJECT: <br />DRAWING TITLE: <br />TOP EMBANKMENT <br />TOP EMBANKMENT <br />S ENECA <br />Coal Company <br />SENECA II -W MINE <br />TYPICAL <br />RUNOFF CONTROL STRUCTURE <br />DRAWN BY: RK /JC <br />Sheet 1 Of 1 Sheets <br />SCALE <br />AS SHOWN <br />FIGURE <br />20 -2 <br />