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..iii - i i- i i i i- ii i iii <br />C TWBN'P1fMILB <br />COAL COMPANY <br />A Cyprus Amax Company <br />July 28, 1998 <br />Twentymile Coal Company <br />29515 Routt County Road k27 <br />Oak Creek, Colorado 80467 <br />970-879-3800 <br />RECEIVED <br />Ms Janet Binns JUL 31 pM <br />Environmental Protection Specialist <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 215 DIV. OF MINERAL <br />Denver, Colorado 80203 & GEOLOGY <br />RE: 1998 Second Ouarter Pond Inspection Report -Permit No. C-82-056 <br />Dear Ms. Binns: <br />Attached for your review are the Quarterly Pond Inspection Reports for the second <br />quarter of 1998. This information is submitted in compliance with the Twentymile Coal <br />Company Permit C-82-056 and CMLRD Rule 4.05.6(13). <br />At Fish Creek Tipple, the riser was lowered and the emergency spillway was raised. The <br />inspection was performed on November 17, 1997. A survey of the riser, embankment, <br />and emergency spillway performed on November 25, 1997. Upon review of the survey <br />information, TCC has decided to survey additional topography of the pond. The <br />elevations determined by GPS were significantly different from the elevations determined <br />by conventional methods and insufficient points were shot to correlate to the previous <br />survey. Due to a communication problem the re-survey did not get completed during the <br />4`" quarter of 1997 and it is scheduled to be done over the next couple of weeks. This <br />information will be forwarded to the DMG when it becomes available. <br />Please contact me at (970) 870-2712 if you have any questions. <br />Sin /ce~!rely~ ~ // <br />Richard Mills <br />Environmental Manager <br />r <br />~~ <br />Attachments <br />