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.MOUNTAIN COAL <br />.:. ~`~COMPANYL.L.t:. <br />A Subsidiary of Arch Western Resawces, LLC <br />October 1, 1998 <br />Mr. Jim Burnell <br />Colorado Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />RECEIVED <br />OCT 5 '.99a <br />DIV. OF_MINERALS <br />(III IIIIIIIIIIIIIIII <br />999 <br />West Elk Mine <br />P O Box 591 <br />5174 Highway 133 <br />Somerset, C0 61474 <br />(970)929-SOTS <br />Fa<(970) 929-5595 <br />RE: Minor Revision No. 250 (Soil Loss Analysis for Lone Pine Gulch and the Water <br />Tank); West Elk Mine; Permit No. C-80-007 <br />Dear Jim: <br />Mountain Coal Company, LLC (MCC) provides the enclosed minor revision application to add a <br />report entitled Soil Loss Analysis, Lone Pine Grrlch Surface Facilities Area and Wafer Tank Site <br />to Exhibit 66 of MCC's permit. Based on the conclusions from the analysis, MCC has determined <br />that it is no longer necessary to maintain silt fence at the Lone Pine underground development <br />waste pile, topsoil pile, and staging area, as well as the mine water tank site. <br />The small area demonstration (SAE) for each of the above sites continues to be valid, because it <br />demonstrates that effluent limitations for sediment can be met during aworst-case scenario (i.e. <br />bare soil). These areas now have sufficient vegetation to more effectively control sediment, as <br />discussed in the report. MCC has revised the drawings, which are enclosed, contained with the <br />SAE's to eliminate the silt fence. The report should be added to the SAE section of Exhibit 66. <br />Please call if you have any questions. <br />Sincerely, <br />'~ ~ L ~ <br />~ ~~~~"~j bL~LV~t% LJ <br />Christine E. Johnsto~ <br />Perrruttmg Specla~st <br />cc: Henry Barbe <br />Kathy Welt <br />mr250.doc <br />