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Peabody <br />Twentymile Coal Company <br />29515 Routt County Road #27 <br />Oak Creek, CO 80467 <br />970.879.3800 <br />October 28, 2010 <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 />RE: PERMIT CO-0042161; THIRD QUARTER 2010 DMR SUBMITTAL <br />Dear Ms. Watson: <br />RF?EEIW -D <br />Division or F;e;%ijtnigt on, <br />iUining :end Sar-ty <br />Please find enclosed the above referenced discharge monitoring reports for the period, for <br />Outfalls 001 A/001 W/MON1 (all site 115), and 002A (sites 300E and 3001). <br />Outfall 001 A/001 W did not discharge during the period. Attached are blank DMRs for this Outfall <br />with the No Discharge box checked. <br />Effluent Outfall 002A did not flow in July and August due to a clogged headgate and warm <br />weather. The headgate was cleared the last week in September, allowing one sample set to be <br />collected. No exceedances were noted. <br />Very truly ours, <br />Brian A. Watterson, P.G. <br />Geologist, Environmental Group, <br />Twentymile Coal Company <br />Enclosures <br />cc: DBMS CWPS Permit No. CO-0042161 file