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OfIvItM <br />QVO9 <br />mason, <br />OXvo M\01\9 aid safe?J <br />January 27, 2009 <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 />Twentymile Coal Company <br />29515 Routt County Road # 27 <br />Oak Creek, Colorado 80467 <br />(970) 879-3800 <br />RE: PERMIT CO-0036684; FOURTH QUARTER 2008 DMR SUBMITTAL <br />Dear Ms. Watson: <br />Outfall 001A flowed each week of the October and November, however exhibited no flow in December 2008. No permit <br />exceedances were noted. <br />Note that testing for 001W was conducted in October 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 reports are attached. <br />Please contact me directly at (970) 870-2750 for any further questions or additional information. <br />40ta 1 <br />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