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' ,z . ~' <br />htr. Uavid C. shclcon <br />h1r. Tom Lillis <br />July 20, (981 <br />Page 2 <br />Plan <br />A drainage system will be ins called in the Doter roglon of the mine bench. <br />This area is adjacent to the double red line shown on Attachment I. ' <br />The drainage system will. be a trench design CiJled with material that <br />would allow drainage of the mine bench area around the mine bench outslope. <br />The materi~Il used to fill. thu trench will provide a stable surface to allow <br />safe movement of mobile vchir.les over Chc drain area. 'fhc routed waCCr nln- <br />oCf will be properly r.onncctcd into Chc drlin:lgc system. <br />1'he northern portion of the trench d rlinage will tie into the L0 inch <br />drain pipe that exists un the north edge of lllc permit area. The southern <br />portion of Chc trench drainage will t.ic loco UIU existing ditch. ]'hose <br />features can be seal ml the scdimenlaliun pond drawing included in the February <br />198.E mining and rcclamacLun pl:ul application now being reviewed. The general <br />location nC the drain system is shown ns a green line on Attachment I. The <br />break in the line indicates that Lhe drain may not be continuous clue [o <br />anticipated difficulty keeping, Chc drain clean ennu);h Lo be effective close <br />to the primary coal stor:+lte and Innd inl{ location. <br />A final design will ha~:e drainage to Lhc nurtll of Chi.s break be Co the <br />existing 10 inch pipeline and drainage Cu the south be to the ditch system. <br />Timin <br />1. The mine si};ht. will he operational less than five years unless <br />additional coal pn+perCy is obtained. Final sift reclamation is <br />[hen essentinlLy within the five year plan. IP [he mine did <br />acquire properly and increase i.ts oxperced Life, lJes[ern would <br />envision several. improvements on [he surface Facility site. <br />2. To avoid stabilizaClon Callure oC the mine bench outslope in <br />next springs run-off, it is agreed [hat construction on the <br />drainage system will be completed by February L, 1982. <br />3. To ensure proper dr:;ign, iC is agreed that do~i};n work including .~ <br />dr;lin size rnlculnt inn.v, niatcr inl spr•cif ical ionr:, and proper <br />drawings will be r.nmpleted and submiCLCd u+ rho Planed Lnnd <br />FcclamaCion Board within ninety days. <br />1'uu rs very truly, <br />~l) 1 <br />-' :~~. <br />lJil 11a01 5, T:ILc <br />WtiT: pas <br />cc: lirucr Collins <br />h:n~~I~rran'es <br />