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=~'a <br />C 'ItiIYBNTYMIL6 <br />~ COAL COMPANY <br />A Cyprus Amaz Company <br />III IIIIIIIIIIIIIIII <br />Twentymile Coal Corporation <br />29515 Routt County Road N 27 <br />Oak Creek, Colorado 80467 <br />970-879-3800 <br />July 2, 1997 <br />Ms. Janet Binns <br />Environmental Protection Specialist <br />Colorado Division of Minerals and Geology <br />1313 Sherman St., Room 215 <br />Denver. CO 80203 <br />~, <br />'71•'~ <br />~~ ~~ <br />n( <br />QlVlbie <br />R~rr `~~~ <br />,u~l o~ 1997 <br /> <br />RE: PERMIT NO. C-82-056: 1995 ANNUAL HYDROLOGY REPORT <br />Dear Ms. Binns: <br />Please find enclosed duplicate copies of a revised Table 49 from the 1995 Twentymile Coal <br />Company (TCC) Annual Hydrology Report. During preparation of the 1996 report, it came to my <br />attention that the information originally submitted in Table 49 for the 1995 AHR was erroneous. <br />)n May of 1995 the prep plant at Twentymile became active. From that date forward, waste <br />material from the mine was routed directly to the prep plant and material from the low quality coal <br />stockpile was recovered for subsequent processing through the plant. The wrong figures were <br />reported for the 1995 Water Year. During 1995, a net of 113,626 tons of low quality coal was <br />added to the low quality coal stockpile as opposed to the 392,127 tons reported in the 1995 AHR. <br />Please contact me if you have any questions. Thank you for your cooperation and assistance N <br />this matter. <br />7WEN'IYMILE COAL COMPANY <br /> <br />Karl C. Koehler <br />Environmental Engineer <br />Enclosures <br />ce: 1995 TCC AHR file <br />