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III IIIIIIIIIIIIIIII <br />999 <br />'~'WENTYMI6B <br /> <br />Twentymile Coal Company <br />C <br />~[ <br />!~ COAI. COMPANY 29515 Routt County Road ri27 <br />Oak Creek, Colorado 80467 <br />A Cyprus Amax Company 970-879-3800 <br />January 26, 1999 <br />Janet Binns <br />Environmental Protection Specialist <br />Division of Minerals and Geology 4Ft^,FIVED <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 ,1999 <br />JAN ~ i5 <br />RE: Minor Revision 99-162, Development Mining Reorientation Drvisw~i ~~ n~i~io~aa iF ~.,_ . ;y <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 <br />for the following activities: l) reorientation of Northeast Submains, 2) extension of Southeast <br />Submains, and 3) mining of alternate 3 Right gateroad. All of these activities are within the <br />current permit boundary and only the Southeast Submains results in additional mining. This <br />additional mining is for extending the Submains 300 feet to the south and then driving astub-in <br />300 feet to the east. [n regards to the reorientation of the Northeast Submains the mined area <br />actually decreased by 2.6 acres. Therefore, the overall impact of the revision is to decrease the <br />disturbed and affected area by 0.6 acres. This is the difference between the Southeast Submains <br />extension area of 2 acres minus the decrease in the Northeast Submains of 2.6 acres. All of the <br />work anticipated in this revision is development, therefore no impacts to the surface are <br />anticipated. <br />I have updated the schedule on Map 23 to reflect the mining that has been done to date and the <br />projected schedule for the remainder of the EMD. Basically, it shows the CM development being <br />complctcd in 1999 and the longwall mining completed in 2000. <br />I have talked with the BLM and will be submitting a minor mine plan modification to them <br />reflecting the above changes. The proposed changes only have a minorimpact on the existing <br />R2P2. I have included the minor mine plan modification as an exhibit to be inserted into the <br />co~dential materials of permit C-82-056. I have called OSM concerning the proposed changes <br />but have not heard back from them as of this time. <br />Jf there are questions, please contact me at your wnvenience. <br />Sincerely, <br />CG%~~~k!i~!•p' ~~~~ <br />Richard Mills <br />Environmental Manager <br />attachments <br />file: I:\en\em•iromuenlal\revisions\mr99162c1.doc <br />