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i <br />s <br />NARRATIVE <br />• CZIENT <br />:~ <br />Mountain Coal Company L.L.C., West Elk Mine, P.O. Box 591, 5174 Highway 133, <br />Somerset, CO 81434 <br />• DATE OF REPORT <br /> January 25, 2000 <br />-t <br /> • PERMTT AND SAMPLE INFORMATION <br /> NPDES permit #: CO-0038776 <br /> Type of sample: Effluent Grab <br /> Date and time of sample(s): 01/20/00 0845 <br /> Date and time oftest start: <br />Dilution water: 01/21/00 0950 <br />Reconstituted Laboratory Water <br />• TEST ORGANISMS <br />Daphnia magna Age: <24 his <br />Fathead Minnow Age: 6 days <br />• PROCEDURE <br />Awte, 48 and 96 hour bioassays as outlined in the most recent protocols specified by the <br />Water Quality Control Division ofthe Colorado Department of Health (1998). <br />• DLSCUSSION <br />West Elk Mine effluent discharge site 013 was not aartely toxic to either fathead minnows <br />orDaphnia magna. Therefore, Mountain Coal Company is currently incompliance with the <br />acute WET portion of its Colorado State Discharge Permit for the fust quarter of 2000. <br /> <br /> <br /> <br />COMMERCIAL TESTING & ENGINEERING CO. <br />I'F~88 <br />LTA <br />Original WaterrnarkeE For Your Protection ,~, e <br />