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RECEIVED <br />Apri127, 2007 <br />Leslie Simpson <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 L.P. (COLOWYO); CDPS NO. COG600757 <br />FIRST QUARTER 2007 DISCHARGE MONITORING REPORT (DMR) AND <br />DISCUSSION OF PREVIOUS 90 DAY MINDI PERMIT REPORTING. <br />Dear Leslie, <br />Colowyo is submitting the first quarter 2007 discharge monitoring report to the Water Quality <br />Control Division. Please find the DMR report attached for your review. No discharge was <br />initiated after the January 13, 2007 effective date of this permit. <br />In error, Colowyo reported information through December 31, 2006 for the previous 90-day <br />MINDI permit No. COG-600757 associated with this activity. A quarter-end report was submitted <br />at the same time quarterly reports for the main CDPS permit were completed, instead of reporting <br />through the entire 90-day span of the MINDI. After reviewing the field data taken between <br />January 1 and January 12, 2007 at this location, the values reported through December 31, 2006 are <br />accurate and do not require modification. <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) 824-1531. <br />Sincerely, <br />i R. Blu ~~~ <br />Kurt s nt <br />Environmental Engineer <br />Encls. <br />C: CDMG/Tames S. w/encl <br />NPDES Repor[s Binder w/encl <br />C.F. 21.1.2 w/encl <br />APR 3 0 2007 <br />OiviSion of Reclamation, <br />Mining and Safety <br />Colowyo Mine • 5731 State Highway 13 • Meeker, Colorado 81641 <br />T +1 970 824 1500 • F +1 970 824 1504 • www.nea.com <br />Kurtis R. Bluut <br />Euviroumeutal Eugiueer <br />