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Client: Mountain Coal Company CO - 0038766 SCG Project No.: 305222 <br />Site; West Elk Mine OI7 <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 $egin Begin End End <br />(LC50) Method Test Date Test Time Test Date Test Time <br />100% Binomial 08-31-2005 1510 09-02-2005 1420 <br />Dilutions) - % Effiuent <br />~'' ~ OntC'O`l, . <br />easuremen (0°0 °o t= 5°u 2 °0 50"0 00°0 <br /># at Start of Test 20 20 20 20 20 20 <br /># five after 24-hours 20 20 20 20 20 20 <br /># live after 48-hours 19 20 19 19 18 10 <br />Hazdness (mg/1) -Receiving Water - N/A Effluent - 50 Recon Water - 83 <br />Alkalinity (mg/1) -Receiving Water - N/A Effluent - 1872 Recon Water - 69 <br />Chlorine (mg/1) - <0.01 pH (initial/final) -Control - 8.2/8.2 100% - 8.6/8.9 <br />Total Ammonia as N (msJl) - <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 and Holly Garrett <br />Date <br />The SeaCrest Group 11 <br />