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~; <br />~ 1ti~ <br />Gp Gam, <br />P~ s~° <br />ia~c <br />t~°~ <br />~° <br />~5\O <br />July 27, 2006 <br />Ms. Tanya Watson <br />Colorado Department of Public Health and Environment <br />Wa[er Quality Control Division -Permits and Enforcement <br />4300 Cherry Creek Drive South <br />Denver, CO 80222-1530 <br />Phone: (303)692-3603 <br />I q g2-~S~ <br />Twentymile Coal Company <br />29515 Routt County Road # 27 <br />Oak Creek, Colorado 80467 <br />(970)879-3800 <br />RE: PERMIT CO-0036684: 2nd QUARTER 2006 DMR SUBMITTAL <br />Dear Ms. Watson: <br />Please find enclosed the above referenced discharge monitoring reports for the period from April 1, 2006 through June 30, <br />2006. Outiall 001A (62 FCT) flowed each week of the period. No permit limitation exceedences were noted during the period. <br />A Quarterly Whole Effluent Toxicity (WET) test was conducted for Outtall 001W in June 2006. 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 />~ A~~ <br />Brian A. Watterson, P.G. <br />Geologist, Environmental Group <br />Tweniymile Coal Company, <br />Enclosures <br />cc: DMG <br />CWPS Permit No. CO-0036684 file <br />