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-~a~~a~ <br />~_MOUNTAIN COAL <br />:-rte \%%COMPANYLLC- <br />A Subsidiary oCArc6 WesCUU Resources, IZC <br />Apri128, 2006 <br />Mr. Chris Gates <br />RECEfVED <br />MAY 012006 <br />Divrs,on of Minerals and Geology <br />Colorado Department of Public Health and the Environment <br />Water Quality Control Division (WQCD}, Enforcement and Compliance Section <br />4300 Cherry Creek Drive South <br />Denver, CO 80222-1530 <br />West Elk Mine <br />POBoz591 <br />5174 Highway 133 <br />Somerset, CO 81434 <br />(970)929-5015 <br />Faz (970) 929-5595 <br />Re: Mountain Coal Company, LLC (MCC), West Elk Mine, CDPS Permit No. CO-0038776, <br />Discharge Monitoring Reports for the First Quarter 2006. <br />Dear Mr. Gates: <br />Attached are the Discharge Monitoring Reports (DMRs) for the fast quarter of 2006. Also attached are <br />the Biomonitoring reports from the SeaCrest Group dated January 26, 2005 (SIC), but, actually for <br />January 26, 2006, for Outfa11017. The dates correspond to Year 2006 throughout the report, just not <br />on the first page. <br />The dischazge from Outfa11017, is experiencing high alkalinity values resulting in failure of the <br />biomonitoring tests in Daphnia magna populations. <br />The tests show, for this"fast quarter 2006, the fish populations and Daphnia magna populations passed <br />the biomonitoring tests. There was spontaneous disappeazance of the alkalinity issue that we have <br />experienced in the past. The new NPDES (CDPS) Permit requires the effects of the TDS be accounted <br />for in subsequent testing. The report details the results of the tests. Comprehensive analyses of the 017 <br />Discharge Point water show that the alkalinity is not masking some other source of toxicity. <br />Should you or your staff have questions or need additional information concerning these Dischazge <br />Monitoring Reports, please contact me at (970) 929-2238. <br />S' ce ely, ~ / <br />"' " - . <br />enry B e <br />Enviro ental Engineer <br />Enclosures; NPDES Forms (DMRs) for 1st Quarter 2006 <br />cc: Tom Kaldenbach - CDMG <br />K. Fucik -SeaCrest Labs <br />J. Kelly -Wright Water Engineers <br />Availability of Records File -NPDES <br />