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III IIIIIIIIIIIII III` <br />999 <br />August 3, 2000 <br />000 <br />Twentymile Coal Company <br />RECEIVED <br />Janet Binns <br />Environmental Protection Specialist AUG 0 4 2000 <br />Division otMinerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 Division of Minerals 8 Geology <br />RE: MR 00-169, Additional Borings at NMD Power Borehole and Associated Modifications <br />Permit No. C-82-056 <br />Dear Ms. Binns: <br />Twentymile Coal Company is requesting a minor revision to the above referenced permit to allow for the <br />boring of three additional holes at the NMD Power Borehole laption. Additionally, the revision will <br />allow for the consWCtion of metal support structures that will be placed over the various borings to <br />suspended the power cable into the mine. Finally, the topsoil salvage plan (or the road extension has been <br />modified to allow for alternate topsoil protection methods, i.e. stockpile or cover with Mirafi or similar <br />type geo-tceh fabric and place gravel on it, during the construction of the road . <br />The bond is revised to shown the reclamation costs associated with this project. The bond estimate allows <br />for a S31 credit, which is associated with removing the vault described in TR 00- 37. Presently, TCC is <br />overbonded; therefore, no bond rider will be required to be submitted to the Division. <br />If there are questions, please contact me at you convenience. <br />Sincerely, <br />/ ~ <br />Richard Mills <br />Environmental Manager <br />attachments <br />file: 1:4evuim4ninor~nv00169~nu00168c1.doe <br />29515 ROUTT COUNTY ROAD p27, OAK CREEK, CO 80467 Phone: (970) 6793800 Fax: (970) 979-8050 <br />