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Colowyo coal company. L.F. <br />5731 Sure Highway 13 <br />Meeker, Colorado 81641 <br />(970) 824-1532 <br />(97n) 8L7-1598 FAX <br />C. CRELLIN SCOTT <br />SR. ENVIRONMENTAL ENGINEER <br />Apri121, 2003 <br /> <br />/® Kennecott <br />REC~~~~~ ®®Ener <br />9~Y <br />ppR 2 y 2©03 Colowyo Coa! Conr~any L.P. `;g' <br />pivislo° 01 Minerals and Geo1o9Y <br />Ms. Carla Lenkey <br />Colorado Department of Public Health and Environment <br />Water Qualiry Control Division <br />4300 Cherry Creek Drive South <br />Denver, CO. 80222-1530 <br />RE: COLOWYO COAL COMPANY L.P. (COLOWYO); CDPS NO. CO-00045161 <br />FIRST QUARTER 2003 DMR <br />Deaz Ms. Lenkey, <br />Colowyo is submitting the firs[ quarter dischazge monitoring report to the Water Quality Control <br />Division. Please fmd the DMR reports attached for your review. <br />Dischazge for the first quarter occurred at outfalls OOIA, 002A and 004A. Significant snowfall <br />occurred during the fast days of Mazch, resulting in the temporary storage of precipitation in the <br />drainages above the ponds. Later in the month temperatures warmed and this stored precipitation <br />flowed into our sediment ponds. This inflow resulted in the initiation of discharge from ponds 002A <br />and 004A. This discharge continued for a period of one to two weeks. Outfall OOIA discharged <br />continuously throughout the first quarter and exhibited elevated discharge levels in the last three <br />weeks of March. <br />Field measurements of outflow were taken four times in January, four times in February and five <br />times in Mazch at outfall OOlA. Due to the short duration of discharge at outfalls 002A and 004A, <br />field measurements were taken once at outfall 002A and twice at outfall 004A in Mazch. <br />Laboratory samples were taken at outfall OOlA in January (1 sample), February (1 sample) and <br />March (3 samples). One Laboratory sample from each outfall at 002A and 004A were taken during <br />the discharge events in Mazch. <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 />C. Crellin Scott <br />Sr. Environmental Engineer <br />Encls. <br />C: CDMG/Byron W. w/encl <br />NPDES Reports Binder w/encl <br />C.F. 1.2.2.4 w/encl <br />