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<br />_~q $ <br />RECEIVED <br />JUL 3 0 2004 <br />Division of Minerals and Geology Twentymile Coal Company <br />29515 Routt County Road # 27 <br />Oak Creek, Colorado 80467 <br />(970) 879-3800 <br />July 27, 2004 <br />Ms. Carla Lenkey <br />Colorado Oepadment 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 />Phane:(303)692-3603 <br />RE: PERMIT CO-0036684: 2ND QUARTER 2004 DMR SUBMITTAL <br />Dear Ms. Lenkey: <br />Please find enclosed the above referenced discharge monitoring reports for the period from April 1, 2004 through June 30, <br />2004. Outta11001A (62 FCT) flowed each week of the period. No permit limitation exceedences were noted during this period. <br />A Quarterly Whole Effluent Toxicity (WET) test was conducted for Outfall 001W in June 2004. This site passed for both P. <br />Promelas, and C. Dubia. Copies of the W ET Test Report Forms are included with this submittal. <br />Please contact me directly at (970) 870.2750 for any further questions or additional information. <br />Brian A. Watterson, R.G. <br />Geologist, Environmental Group <br />Twentymile Coal Company, <br />Enclosures <br />cc: DMG <br />CWPS Permit No. CO-0036684 file <br />