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000 <br />C_~o~g I~~uu <br />Twentymile Coal Company <br />29515 Routt County Road # 27 RE~EI V ~® <br />Oak Creek, Colorado 80487 n , <br />(970) 879-3800 JAN 3 0 2003 <br />Division of Minerals and Geola4Y <br />January 23,2003 <br />Ms. Carla Lenkey <br />Colorado Department of Public Health and Environment <br />Water Quality Control Division -Permits and Enforcement <br />4300 Cherry Creek Drive South <br />Denver. CO 80222-1530 <br />RE: PERMIT CO-0042161: 4th QUARTER 2002 DMR SUBMITTAL <br />Dear Ms. Lenkey <br />Please find enclosed the above referenced discharge monitoring reports for the period from October 1, 2002 through <br />December 31, 2002, concerning Outfalls 001, 002 (300e & 3001) for the subject permit. Note that Outtall 001 did not discharge <br />during the month of October 2002. No permit limitation excursions occurred during the period for these Outfalls. <br />A Quarterly Whole EfFluent Toxicity (WET) conducted in November 2002 for Ouffall 001 indicated that the effluent was not <br />acutely toxic to Daphnia Magna. Copies of the CDPS W ET Test Report Fonn is attached. <br />Please contact me directly at (970) 870-2751 for any further questions or additional information. <br />Brian A. Watterson, R.G. <br />Environmental Geologist <br />Twentymile Coal Company <br />Enclosures <br />cc: DMG <br />CWPS Permit No. CO-0042161 file <br />