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Mountain Coal Company <br />Site: West Elk Mine <br />CO - 0038766 <br />SCG Project No.: 304309 <br />WET TE5T REPORT FORM -ACUTE <br />Permittee: Mountain Coal Company Outfall(s): 017 <br />Permit No.: CO - 0038766 <br />Test Type: Routine ® Accelerated ^ <br />Test Species: Fathead minnow (Pimephales promelas) <br />Test Results Statistical Begin Begin End End <br />(LC50) Method Test Date Test Time Test Date Test Time <br />>100% N/A 10-28-04 1115 11-01-04 1015 <br />Dilutions) - % Effluent <br />Hazdness (mg/I) -Receiving Water - N/A Effluent - 34 Recon Water - 93 <br />Alkalinity (mg/1) -Receiving Water - N/A Effluent - 2008 Recon Water - 68 <br />Chlorine (mg/1) - <0.01 pH (initiaUfinal) -Control - 8.1/7.6 100% - 8.2/8.8 <br />Total Ammonia as N (mg/1) - <1.0 <br />Were all Test Conditions in Conformance with Division Guidelines? YES ®NO ~ <br />If NO, list deviations from test specifications: <br />Laboratory: The SeaCrest Group <br />Comments: <br />Analyst's Name: Sarah Geer, Joel Mehlenbacher <br />Date <br />The SeaCrest Group 11 <br />