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Mountain Coal Company CO - 0038766 SCG Project No.: 304222 <br />Site: West Elk Mine <br />WET TEST REPORT FORM -ACUTE <br />Permittee: Mountain Coal Company Outfall(s): 017 <br />Permit No.: CO - 0038766 <br />Test Type: Routine ^ Accelerated <br />Test Species: Daphnia magna <br />Test Results Statistical Begin Begin End End <br />(LC50) Method Test Date Test Time Test Date Test Time <br />56.5% Binomial 8-26-04 1230 8-28-04 1210 <br />Dilutions) - % Effluent <br />Hazdness (mg/1) -Receiving Water - N/A Effluent - 28 Recon Water - 84 <br />Alkalinity (mg/1) -Receiving Water - N/A Effluent - 2201 Recon Water - 66 <br />Chlorine (mg/1) - <0.01 pH (initiaUfinal) -Control - 8.1/8.2 100% - 8.4/4.3 <br />Total Ammonia as N (m¢/11 - <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: Shannon Phelps, Richard Morgan <br />z/ o <br />The SeaCrest Group ]0 <br />