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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: 001 <br />50% MORTALITY TEST: X Pass _ Fail LC50: >100%. <br />TEST (Animal/Age): Fathead Minnow, 5 days. <br />DATE/'fIME TEST BEGAN: 9/19/01 3:00 p.m. <br />SAMPLE (DatelType): 9/18/01 Grab. <br />DATE/TIME TEST COMPLETED: 9/23/01 6:30 p.m. <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 19 <br />48 hrs 20 na 20 20 20. 20 19 <br />72 hrs 20 na 20 20 20 20 18 <br />9fi hrc 20 na 20 20 20 20 1R <br />Max/Min Values <br />Dilutions (% Effluent) <br />Recon Receiving 6.25% 12.5% 25% 50% 100% <br />Water Water <br />C \ Dissolved Orygen 7.5/5.8 na 7.3/6.4 7.4/6.5 8.00/6.7 9.0/7.2 9.9/7.6 <br />1 Temn ram(°Cl 21.0/19.4 na 210/194 210/19.4 710/194 21.0/194 210/194 <br />Receiving Water used for Dflution7 (Y of N) N <br />Hardness, mg/L CaC03: Receiving Water na Recon Water 172 Effluent 1 <br />Initial Total Residual Chlorine, mg/L Cl2 100% Effluent: <0.05 <br />Reconstituted pH: Initia17.92 After 24 hours 8.08 <br />Receiving Water pH: Initial na After 24 hours na - <br />pH in 100% Effluent: Initia17.85 After 24 hours 8_31 <br />Ammonia as N, mg/L: 100% Effluent .55 Receiving Water na Recon <0_0S <br />Conductivity, umhos/cm: 100% Effluent 2 560 Receiving Water na <br />Alkalinity, mg/L CaC03: 100% Efriuent 290 Receiving Water na <br />Analyst: Lee Rawli ~ s Laboratory: Water & Environmental Testing, Inc. <br />Signature: /~C2 Date: 9,~lO/ <br />Comments: <br /> <br />Page 3 of 8 <br />