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C-Iq g2-0 Sb <br />RAG <br />Twentymile Coal Company <br />29515 Routt County Road # 27 <br />Oak Creek, Colorado 80467 <br />(970) 879-3800 <br />January 26, 2004 <br />~~~+• <br />-~, ~~.. n <br />~~I~ 3 ~ ~aJ4 <br />pivision of Minerals and Geolap~• <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 2003 DMR SUBMITTAL <br />Dear Ms. Lenkey: <br />Please find enclosed the above referenced discharge monitoring reports for the period from October 1, <br />2003 through December 31, 2003, for Outfalls 001A (site 115), 002A (300E), and 3001. No permit <br />limitation exceedances occurred during this period. <br />Note that Outfall 001A discharged each week in October, during the first three weeks of November, and <br />did not discharge during December. No discernable flow was noted for Outfall 002A during the months <br />of October and November, however 002A did flow each week in December, allowing samples to be <br />collected only during this month. Limited flow from 002A may be the result of the refilling of one of the <br />wastewater holding ponds that was dredged during the summer. 3001 flow each week of the period. <br />A Quarterly Whole Effluent Toxicity (WET) test was collected for Outfall 001W in October 2003. This <br />test indicated that the effluent was not acutely toxic to Daphnia magna survival. Copies of the WET <br />Test Report Form is attached. <br />Please contact me directly at (970) 870-2750 with any questions. <br />~~ ~~ <br />Brian A. Watterson, R.G. <br />Environmental Specialist <br />Enclosures <br />cc: DMG CWPS Permit No. CO-0042161 file <br />