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STATE OF COLORADO gR'NawO D. LPY4. Gnv¢m-• ~~~ <br />DEPART.VIENT OF N4TURAL RESOURCES <br />Hares D. Snerman. E.e cut rva Drtec for <br />11I~'ED LAtirD ~EL1.~A'~IATIO\ <br />723 Centennial Building, 1313 Sherman Street <br />Denver, Colorado 80203 7e1. (?A3) 839350"7 <br />Hamlet .l. Sarry, lll, <br />pirector <br />Piarch 14, 1980 <br />Mr. Tom Pike <br />Technical Services Branch <br />Office of Surface Mining <br />1020 i5th St. <br />Brooks Tower <br />Denver, Colorado 80202 <br />RE: Underground Slurry Waste Disposal System for Western Slope Carbon, Tnc. <br />Dear Tom: <br />The Pained Land Reclamation Division has reviewed the Slurry [,taste Disposal <br />Proposal as advanced by Western Slope Carbon. Regulatory action cottcernin~; <br />• this permit has been delayed pending the results of the technical evaluation <br />to be done by MSE3A and also a comprehensive review of tfte relationship betweL•n <br />Sediment Control at the east mine bench, the Wash Plant as well as the Slurry <br />System. <br />As you may know, the Slurry Disposal is to commence not in the east mine~but <br />in the west mine which at the current time is inactive. L;estern Slope Cark.~.~i <br />feels that since Slurry Disposal is at this time an experimental practice~tTrat <br />they do not wish to jeopardize their active mining operation or production <br />schedules. Therefore, the sumps in the east mine which are connected to the <br />Sediment Control System for the east mine bench will not be utilized for the <br />first several years in the Slurry Disposal System. P.ather, the plan is to <br />introduce the slurry to the lo:+er-most northern section of the west mi.^.e in <br />the area of the main slope. The main slope consists of five tunnels which <br />proceed doom dip _.. from the Hawks Nest west entry approximately 4,100 feet co <br />the northern most extension of the mine. Cross cuts connect the five entrie> <br />every 70 to 80 feet. If the mine is currently open at the lower most section <br />existing pillars will be shaved so that tnaSiatum coal recovery is achieved, <br />then the slurry will be introduced into the voids around each entry. Since a <br />substantial amount of the roof support will be lost as t:tis coal recove*y <br />operation takes place, there is a high likelihood that the sump which is shaman <br />on Exhibit F of the slurry proposal till not be utilized. Instead, water m:ty <br />have to be drawn from the slurry at approximately the see point. that it is <br /> <br />