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Tony Tenoyson <br />Environmental Engineer <br />Apri127, 2007 <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 />RECEIVED <br />APR 3 0 2007 <br />Division dfand Saf at~1. <br />Mining ~Y <br />RE: COLOWYO COAL COMPANY L.P. (COLOWYO); CDPS NO. CO-00045161 <br />FOURTH QUARTER 2006 DISCHARGE MONITORING REPORTS (DMR) AND <br />EXCEEDENCE RELIEF REQUEST FOR OUTFACES OOlA AND 004A. <br />Deaz Ms. Morgan, <br />Colowyo is submitting the first quarter 2007 discharge monitoring report to the Water Quality <br />Control Division. Please find the DMR reports attached for your review. Regulatory limits were <br />exceeded during the fourth quazter of 2007 at Outfall 001 A for Total Suspended Solids Gorss <br />Effluent Value and Outfall 004A for Total Suspended Solids Gross Effluent Value and Total <br />Recoverable Iron. Please find the attached Exceedence Relief Request packet for your review. <br />Thank you for your consideration. Please feel free to contact me if you have any questions or <br />concerns. I can be reached at (970) 824-1532. <br />Sincerely, <br />~`~~ <br />Tony Tennyson <br />Environmental Engineer <br />Encls. <br />C: CDMG/James S. w/encl <br />NPDES Reports Binder w/encl <br />C.F. 21.1.2 w/encl <br />Colowyo Mine • 5731 State Highway 13 • Meeker, Colorado 81641 <br />T +1 970 824 1500 • F +1 970 824 1504 • www.rtea.com <br />