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Region VIII Guidance for Acute Whole Effluent Reporting <br />•ERMITTEE NAME: Western Fuels Co. SITE ID: New Horizon Mine OUTFACE NO: 007 <br />50% MORTALITY TEST: X Pass Fail LC50: >]00%. <br />TEST (Anima!/Age): Ceriodaphnia <24 hours. <br />DATE/TIME TEST BEGAN: l2/27/O1 2:45 pm <br />SAMPLE (Date/Type): 12/26/Ol Grab. <br />DATE/TID1E TEST COMPLETED: 12/29/01 2:45 pm <br />Survival Totals <br />Dilutions (% Effluent) <br />Recon Receiving 6.25% 12.5% 25% 50% 100% <br />Water Water <br />Initial 20 na 20 20 20 20 20 <br />24 hrs 20 na 20 20 20 20 20 <br />MaxlMin Values <br />Dilutions (% Effluent) <br />Recon Receiving 6.25% 12.5% 25% 50% 100% <br />Water Water <br />Dissolved Oxygen 7.3/6.5 na 7.4/6.7 7.5/6.7 7.S/6.7 7.7/6.8 8.3(7.1 <br />Temnerah~re (°Cl 10 fi/19 4 na 70 fi/19 4 70 4/19.4 20 4/19.4 70 4/19 4 70 4/19 4 <br />.Receiving Water used (or Dilution? (Y of N) N <br />Hardness, mgJL CaCO3: Receiving Water na Recon Water 180 Effluent 2 732 <br />Initial Total Residual Chlorine, mg/L C12 100% Effluent: <0OS <br />Reconstituted pH: Initia17.98 After 24 hours 8.08 <br />Receiving Water pH: Initial na After 24 hours na <br />pH in 100% Effluent: Initial 7.66 After 24 hours 7.93 <br />Ammonia as N, mglL: 100% Effluent Initial 2.79 Receiving Water na Recon Initial <0OS <br />Conductivity, umhos/cm: 100% E(tluent 44 3S0 Receiving Water na <br />Alkalinity, mg/L CaCO3: 100% Effluent 462 Receiving Water na <br />Analyst: Lee Rawlines Laboratory: Wafer & Environmental Tes[ina. Inc. <br />Signature: <br />Date: ~ />y <br />• <br />Page 5 of 9 <br />