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A~ <br />Twentymile Coal Company <br />29515 Routt County Road # 27 <br />Oak Creek, Colorado 80467 <br />(970)879-3800 <br />April 17, 2007 <br />~~. ~ Z ~s <br />Mr. Ray Nalepa <br />Colorado Department of Public Health and Environment <br />Water Quality Control Division -Permits and Enforcement <br />4300 Cherry Creek Ddve South <br />Denver, CO 80222-1530 <br />Phone: (303)692-3603 <br />RE: PERMIT CO-0036684; 1~ QUARTER 2007 DMR SUBMITTAL <br />Dear Mr. Nalepa: <br />Please find enclosed the above referenced discharge monitoring reports for the period from January 1, 2007 through March <br />31, 2007. Outtall 001A (62 FCT) did not flow in January or February, and did not begin to flow again until the second week of <br />March. No permit limitation exceedences were noted during the quarter. <br />A Quarterly Whole Effluent Toxicity (WET) test was conducted for Outtall OO1W in March 2006. This site passed for both P. <br />Promelas, and C. Dubia. Copies of the WET Test Report Forms are inclutled 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 />