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~'~~ III Illllllllllllllll <br />TW6N9'YM~6B 999 Twentymile Coal Corporation <br />7i~ COAI. COMPANY 29515 Routt County Road # 27 <br />A Cyprus Ama: Company Oak Creek, Colorado 80467 <br />970-879-3800 <br />~.. <br />August 23, 1996 <br />Q~r,F~VED <br />AUG 2 6 1996 <br />Mr. Kent Gorham <br />Environmental Protection Specialist <br />Division of Minerals and Geolog}• <br />1313 Sltennatt Street, Room 215 <br />Denver. Colorado 80203 <br />Division of fainerals ~ Geology <br />Re: Permit No. C-82-056: Minor Revision 138. EMD Ventilation Facility Intake Shag Heater <br />Dear Mr. Gorham: <br />fwenn-mile Coal Company (TCC) is requesting a minor revision to the above referenced permit. The <br />revision, when approved, would allow for the installation of a heater for the intake vent shaft and an 18,000 <br />gallon propane tank at the site. In addition, some minor modification of wording with regard to the <br />additional temporary exhaust fan is included which states that [his fan will remain on site as a backup. <br />The heater will be constructed on a 12' x 26' x I' concrete pad just east of [he intake fan vent shaft and the <br />propane tank will be installed 100' west of the shaft on concrete footers. Narrative describing the <br />installation of the heater and propane tank is provided on revised page 2.05-13(c)(6c). <br />Bond calculations associated with these additions are provided on revised pages 2.05-54(F)(59a) through <br />(59c). The total change in bond for the installation of the heater and propane tank is $5,489. TCC <br />currently maintains bond in the amount of $6.238,370, with a liability of bond of $6,223,689. Upon <br />approval of [his Minor Revision, TCC will have a liability of bond in [he amount of $6,229,178, or excess <br />bond of $9,192. <br />Thank you for your cooperation in this matter. If you have any questions or require further information, <br />please contact me at (970) 870-2750. <br />TN'ENTYMILE COAL COMPANY <br />~~~ <br />~D. Ro,ers <br />Environmental Specialist <br />Enclosures <br />/tdr <br />