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Client: Western Fuels CO -0000213 SCG Project No.: 315390.B <br />Site: New Horizon Mine 013 <br />WET TEST REPORT FORM — CHRONIC <br />Permittee: Western Fuels Colorado Outfall: 013 <br />Permit No.: CO -0000213 <br />Test Type: Routine ® Accelerated ❑ <br />Test Species: Ceriodaphnia dubia IWC: 100% <br />Test Start Test End <br />Time Test Start Date Time Test End Date <br />1430 06-23-2015 1345 06-29-2015 <br />Test Results <br />Lethality <br />Reproduction <br />NOEC <br />800/0 <br />40% <br />100% <br />FAIL <br />FAIL <br />IC25 <br />83.3% <br />57.4% <br />100 <br />FAIL <br />FAIL <br />Dilution(s) - % Effluent <br />Measurements <br />Control <br />0% <br />20% <br />40% <br />60% <br />80% <br />100% <br />% Survival for day 1 <br />100 <br />10o <br />100 <br />100 <br />100 <br />100 <br />% Survival for da 2 <br />100 <br />100 <br />100 <br />100 <br />100 <br />100 <br />% Survival for day 3 <br />100 <br />100 <br />100 <br />90 <br />80 <br />70 <br />% Survival for day 4 <br />100 <br />100 <br />100 <br />90 <br />80 <br />60 <br />% Survival for day 5 <br />100 <br />100 <br />100 <br />90 <br />80 <br />50 <br />% Survival for day 6 <br />100 <br />100 <br />1 100 <br />90 <br />80 <br />50 <br />Mean 3 Brood Total <br />22.7 <br />22.3 <br />20.5 <br />16.5 <br />9.0 <br />3.0 <br />Hardness (mg/L) — Receiving Water: N/A Effluent: 2540/2665/2168 Recon Water: 88 <br />Alkalinity (mg/L) — Receiving Water: N/A Effluent: 460/542/280 Recon Water: 62 <br />Chlorine (mg/L) — Effluent: <0.01 pH (initial/final) — Control: 8.0/8.0 100%: 6.6/8.2 <br />Total Ammonia as NH3 (mg/L) - Effluent: 3.24/3.17/1.10 <br />Were all Test Conditions in Conformance with Division Guidelines? YES N NO <br />If NO, list deviations from test specifications: <br />Laboratory: SeaCrest Group <br />Comments: <br />Analyst's Name: Alex Arnold, Kyra Brisson, and Raelynn Kadunc <br />SeaCrest Group 18 <br />