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c~~c~~~-c~~ <br />RE~EIVE® <br />OCY 3 0 2002 <br />Division of Minerals and Geology <br />I, R A G,! <br />Twentymile Coal Company <br />29515 Routt County Road # 27 <br />Oak Creek, Colorado 80467 <br />(970)879-3800 <br />October 28, 2002 <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; 3rd QUARTER 2002 DMR SUBMITTAL <br />Dear Ms. Lenkey: <br />Please find enclosed fhe above referenced discharge monitoring reports for the period from July 1, 2002 through September <br />30, 2002, concerning Outfalls 001, 002 (300e & 3001) for the subject permit. Note that Outfall 001 discharged during the first, <br />second, and fourth week of July, during the first two weeks of August, and did not flow for the rest of the period. No permit <br />limitation excursions occurred during the period for these Ouffalls. <br />A Quarterly W hole Effluent Toxicity (WET) conducted in July for Ouffall 001 indicated that the effluent was not acutely toxic to <br />Daphnia Magna. Copies of the CDPS W ET Test Report Form is attached. <br />Please contact me directly at (970) 870-2751 for any further questions or additional information. <br />Sandra White <br />Environmental Assistant <br />Twentymile Coal Company <br />Enclosures <br />cc: DMG <br />CWPS Permit No. CO-OD42161 file <br />