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r- <br />~ Twentymile Coal Company <br />February 2, 1995 <br />~II ~I~~I~~I~~~~~~~~ <br />RFrF~\IFD sss <br />29515 Routt CounTy Road p27 <br />FEB ~ 3 'q~a er 03) BC79--3800 <br />„aologY <br />pw~g, <br />Denver, CU 80203 <br />RE: COLARADO 7~.MPA COAL COMPANY; PEIaffT C-84-062; 1994 ANNUAL HYDROIAGY REPORT <br />Mr. Kent Gorham <br />Environmental Protection Specialist <br />Colorado Division of Minerals and Geology <br />1313 Sherman St., Roan 215 <br />Dear Mr. Gorham: <br />Please find enclosed duplicate copies of the 1994 Annual Hydrology Report for <br />Colorado Yampa Coal Ca~any (CYCC) Permit No. C-84-062. Updated summaries of <br />water quality data incorporating the 1994 water year information will be provided <br />for inclusion in the AHR as soon as they become available. CYCC anticipates <br />providing this information by no later than February 28, 1995. The summaries <br />will be provided in tabular form and should be incrorporated into the AHR as <br />indicated on the "List of Tables" provided in the report. <br />Please note that monthly precipitation creasurements presented as Figure 31 <br />reflect measurements obtained from USGS gaging site 09243900. Past AHR sulanittal <br />have utilized precipitation data from Steamboat Springs and Hayden, Colorado. <br />The newly established data station provides a more accurate indication of <br />precipitation occurring at the site. Also be advised that CYCC is aware of the <br />apparent discrepancy between streamflow measurements as provided by the USGS at <br />Sites 700 and 900 and field observations collected by CYCC. CYCC is in the <br />process of investigating the source of this error and believes the USGS <br />information provided is inaccurate. CYCC will provide the Division with <br />corrected information from the USGS when it becomes available. <br />Please contact me at (303) 879-3800, extension 8777, if you have any questions <br />or require further information. Thank you for your cooperation. <br />TWFNTYMILE CUAL CLYKPANY <br />~~ /" <br />Karl C. Koehler <br />Environmental Engineer <br />/kck <br />cc: Permit No. C-84-062 General Correspondence file <br />