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Matthew Guptill, Technical Services Manager 970 - 824 -1579 <br />January 20, 2012 <br />Ms. Kelly Morgan <br />Colorado Department of Public Health and Environment <br />Water Quality Control Division <br />4300 Cherry Creek Drive South <br />Denver, CO 80246 -1530 <br />RE: COLOWYO COAL COMPANY; CDPS NO. CO- 00045161 FOURTH QUARTER 2011 DISCHARGE <br />MONITORING REPORTS (DMR) <br />Dear Ms. Morgan, <br />Colowyo is submitting the Fourth Quarter 2011 Discharge Monitoring Report to the Water Quality <br />Control Division. Please find the DMR reports attached for your review. Colowyo exceeded Regulatory <br />Limits during the Fourth Quarter of 2011 for Total Suspended Solids due to a precipitation event. BETX <br />sampling was not required for the Fourth Quarter. <br />Sincerely, <br />Matthew Guptill <br />Technical Services Manager <br />Encl. <br />CC: CDRMS /Rob Zuber <br />C.F. 21.1.2 w /encl <br />5731 Highway 13 <br />Meeker, Colorado 81641 <br />970 - 824 -1500 <br />RECEIVIBD <br />JAN 2 3 2012 <br />DIVISIOR of rteclamation, <br />Mining and Safety <br />