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<br />March 28, 2011 <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 COG-073534; FEBRUARY 2010 DMR SUBMITTAL <br />Dear Ms. Watson: <br />Outfall 001A flowed only for the first few days in February, allowing only one sample set to be collected. Flow <br />along the Creek was estimated using an existing Gage Station, however the accuracy may be in question due to <br />snow and ice buildup along the Creek. No exceedances were noted. Outfall 001 A is located along Foidel Creek <br />which is an ephemeral creek. Note that there was no discharge from any of the upstream Twentymile <br />sedimentation ponds (under CO-0027154) in February, which feeds Foidel Creek. <br />Best regards, <br />.V . (,t - f /'f (4,UQ-, -._.--.-- <br />Brian A. Watterson, P.G. <br />Twentymile Coal Company <br />Geologist, Environmental Group <br /> <br />enclosures <br />cc: DBMS; CDPS Permit No. CO-00GO72758 file