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Peabodq <br />Twentymile Coal Company <br />29515 Routt County Road #27 <br />Oak Creek, CO 80467 <br />970 879.3800 <br />January 28, 2013 <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; FOURTH QUARTER 2012 DMR SUBMITTAL <br />Dear Ms. Watson: <br />Please find enclosed the above referenced discharge monitoring reports for the fourth quarter of <br />2012, for Outfalls 001A/001W/MON1 (all site 115), and 002A (sites 300E and 3001). Outfall <br />001A/001W/MON1 did not discharge during the period. 002A (sites 3001 and 300E) flowed in <br />October, but did not flow in November or December due to low precipitation and sub zero <br />temperatures. One exceedance was noted. The 30 day average for BOD -5 day. It was 31 mg /L, <br />as opposed to the limit of 30 mg /L. As indicated above the site has not flowed for the last two <br />months. <br />If you have any questions, please contact me directly at (970) 870 -2750. <br />Best Regards, <br />Brian A. Watterson, P.G. <br />Geologist, Environmental Group, <br />Twentymile Coal Company <br />Enclosures <br />cc: DRMS CWPS Permit No. CO- 0042161 file <br />