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RECEIVED Twentymile Coal Company <br />29515 Routt County Road # 27 <br />OCT 3 0 2008 Oak Creek, Colorado 80467 <br />(970) 879-3800 <br />uwA,a,v,, u, r:6clamation, <br />Dining and Safety <br />October 27, 2008 <br />Ms. Tania Watson <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 />Phone: (303) 692-3603 <br />RE: PERMIT CO-0036684: THIRD QUARTER 2008 DMR SUBMITTAL <br />Dear Ms. Watson: <br />Outfall 001A flowed each week of the quarter. No permit exceedances were noted. <br />Note that testing for 001W was conducted in September 2008. This test indicated that the effluent was not acutely toxic to <br />fathead minnow survival, or Ceriodaphnia dubia survival. A copy of the WET test report is attached. <br />Please contact me directly at (970) 870-2750 for any further questions or additional information. <br />6'1; Brian A. Watterson, R.G. <br />Geologist, Environmental Group <br />Twentymile Coal Company, <br />Enclosures <br />cc: DBMS <br />CWPS Permit No. CO-0036684 file