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Client: Western Fuels CO-0000213 SCG Project No.: 310547 <br />Site: New Horizon Mine NPDES 011 <br />WET TEST REPORT FORM - ACUTE <br />Permittee: Western Fuels New Horizon Mine Outfall(s): NPDES 011 <br />Permit No.: CO-0000213 <br />Test Type: Routine ® Accelerated ? <br />Test Species: Fathead minnow <br />Test Results Statistical Begin Begin End End <br />(LC50) Method Test Date Test Time Test Date Test Time <br />>100% N/A 05-25-2010 1330 05-29-2010 1350 <br />Dilution(s) - % Effluent <br /> <br />Measurements Control <br />0% <br />6.25% <br />115% <br />25% <br />50% <br />100% <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 /> <br />Chlorine (mg/L) - <0.01 pH (initial/final) - Control: 8.4/8.4 100%: 8.3/8.5 <br />Total Ammonia as NH3 (mg/L) - Effluent: <0.03 <br />Were all Test Conditions in Conformance with Division Guidelines? YES ® NO ? <br />Hardness (mg/L) - Receiving Water: N/A Effluent: 1700 Recon Water: 97 <br />Alkalinity (mg/L) - Receiving Water: N/A Effluent: 172 Recon Water: 60 <br />If NO, list deviations from test specifications: <br />Laboratory: SeaCrest Group <br />Comments: <br />Analyst's Name: D&q ca Taber, and Steve Mullins <br />I r <br />?%- V <br />Signature Date <br />SeaCrest Group 14