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Mountain Coal Company CO - 0038766 SCG Project No.: 304225 <br />Site: West Elk Mine <br />WET TEST REPORT FORM -ACUTE <br />Permittee: Mountain Coal Company <br />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 8-31-04 1230 9-04-04 1300 <br />Dilutions) - % Effluent <br />ei Nr:4 y ~~,~r.~ „x" ~s~~ <br />Measureinenls ,. ~ ~ Control <br />~ (0,%p} w 1 <br />~xi1h9%~~ ,~- K <br />~12'S°fq~ , Ada <br />s~~~",2,5"/0 -~,r <.., ~ <br />„ 50"0~ _ <br />"s~100°c:~,-~ ~`~ a~',r ~ <br />NIA%g C ". <br />Nt,A% <br /># at Start of Test 40 40 40 40 40 40 <br /># live after 24-hours 40 40 40 40 40 40 <br /># live after 48-hours 40 40 40 40 40 40 <br /># live after 72-hours 40 40 40 40 40 40 <br /># live after 96-hours 40 40 40 40 40 40 <br />Hardness (mg/1) -Receiving Water - N/A Effluent - 28 Recon Water - 94 <br />Alkalinity (mg/1) -Receiving Water - N/A Effluent - 2308 Recon Water - 67 <br />Chlorine (mgll) - <0.01 pH (initiallfinal) -Control - 8.017.9 100% - 8.2/8.9 <br />Total Ammonia as N (m~/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 />0 <br />The SeaCrest Group 11 <br />