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_~~ ~iuii~~~iiu ui • • <br />STATE OF COLORADO <br />DIV1510N OF MINERALS AND GEOLOGY <br />Department o(Natural Resources <br />I ] 13 Sherman 51 ,Room 215 <br />Denver, CO 80203 <br />Phone: (]031 8663567 <br />FAX'. {303)832-8106 <br />December 10, 1993 <br />Mr. Markus Middleton <br />Twentymile Coal Company <br />29587 Routt CR No. 27 <br />Oak Creek, CO 80467 <br />RE: 1992 AHR Review Responses, Foidel Creek Mine, No. C-82-056 <br />Dear Mr. Middleton: <br />OF'~~[o <br />v.F' 4 <br />~~. b <br />O <br />~,,,,+g: <br />~ r8]6 ~ <br />Roy Romer <br />Governor <br />Michael P. long <br />Division Oveclor <br />The Division has completed review of TCC's responses to Division review of the 1992 Annual <br />Hydrology Report for the Foidel Creek Mine. All responses were determined to be adequate <br />with the following exceptions, where additional information is requested. <br />1. Site 1003 elevation is still incorrect on either the data sheet or the station elevation table at <br />the beginning of the data section. Please correct as necessary. <br />2. Site 8 depth and flow readings reveal the following: <br />-1.62 depth 6.7 cfs <br />-1.02 depth .6 cfs <br />-3.75 depth .6 cfs <br />Different depths are shown as being converted to the same discharge. Please correct this <br />information and Table 30. <br />3. Please reference the location of the data in the TCC permit which demonstrates that mine <br />discharge composes favorably with predicted inflow totes. <br />Please respond to these final items within 30 days of receipt. If you have questions please <br />call me. <br />Sin ~ ~~~~ <br />Kent A. Gorham <br />Environmental Protection Specialist <br />KAG/etn M:\oss\ern\20mile.kag <br />