2010-07-26_HYDROLOGY - C1981008 (2)

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Client: Western Fuels CO-0000213 SCG Project No.: 310624 Site: New Horizon Mine 007 WET TEST REPORT FORM - CHRONIC Permittee: Western Fuels Outfall: 007 Permit No.: CO-0000213 Test Type: Routine ® Accelerated ? Test Species: Ceriodaphnia dubia IWC: 100% Test Start Test End Time Test Start Date Time Test End Date - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1500 06-29-2010 1410 07-04-2010 Test Results. Lethali Re' rodaction _ Conc. with Stat. Difference >100% >100% PASS N/A IC25 >100% >100% N/A N/A DilutionhO - % Effluent Measurements Control 0% 6.25% 115% 25% 50% 100% % Survival for day 1 100 100 100 100 100 100 % Survival for day 2 100 100 100 100 100 100 % Survival for day 3 100 100 100 100 100 100 % Survival for day 4 100 100 100 100 100 100 % Survival for day 5 100 100 100 100 100 100 Mean 3 Brood Total 16.7 1 16.7 14.6 14.1 14.4 18.5 H N x./Min. 8.618.2 8.618.3 8.7/8.4 8:7/8.4 8.8/8:5 8.9/8.6 Hardness (mg/L) - Receiving Water: N/A Effluent: 250/187 Alkalinity (mg/L) - Receiving Water: N/A Effluent: 119/106 Chlorine (mg/L) - Effluent: <0.01 pH (initial/final) - Control: 8.3/8.5 Total Ammonia as NH3 (mg/L) - Effluent: 0.09/<0.03 Recon Water: 90 Recon Water: 62 100%: 8.6/8.8 Were all Test Conditions in Conformance with Division Guidelines? YES ® NO If NO, list deviations from test specifications: Laboratory: SeaCrest Group Comments: Analyst's Name: Paniz Bighash and Melissa Mimna SeaCrest Group 01kim 16