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III IIIIIIIIIIIIIIII <br />999 <br />©00 <br />Twentymile Coal Company <br />February 26, 2001 <br />Janet Binns <br />Environmental Protection Specialist <br />Division of Minerals and Geology <br />3233 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />RE: Mid-term Review, 2001 Response <br />Permit Na. C-82-056 <br />Dear Ms.Binns: <br />RECEIVED <br />1'IAR ~ 1 2001 <br />Division of Minerals B Geola+~. <br />The following are TCC's responses to items 3 and 4 presented in the Division's letter of February <br />2, 2001. <br />Item Numbers 1 8 2 - TCC provided this information in the letter of August 25, 2000 to the <br />Division. The letter referenced "Revisions to 1998, 1999 & 2000 Annual Reports. <br />Item No. 3. -The following presents information that is currently in the permit and responds to this <br />concern: <br />Structure Volume of inert material Source <br />Page 2.05-105.1 see response to 7N escape shaft <br />Page 2.05-106 see response to EMD dewatering facility <br />No. 7 Escape Shaft see page 60 (a) of App A concrete/grout <br />EMD Vent Shaft see page 64 (a) of App A cemenUsurgel <br />EMD Dewatering Borehole see page 66 of App A cemenUsurgel <br />NMD Power Borehole see page 89 of App A grout <br />Item No. 4 -The borehole referenced on page 9 of Appendix A refers to the power borehole drop <br />approved in MR 88- 17. The location of the borehole is presented on Map 39, Substation 8 <br />Powerline Location. This power borehole has been plugged and abandoned. <br />If there are further questions, please contact me at your convenience. <br />Sincerely, <br />Richard Mills <br />Environmental Manager <br />File:l:ten(envldmgUnidterm review 2001Vnidterm response 22feb01 <br />20515 ROUTT COUNTY ROAD r27, OAK CREEK, CO 80467 PNONE: (870) 87&3800 FAx: (870) 878050 <br />J <br />