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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: >100%. <br />TEST (Animal/Age): Fathead Minnow, 6 days. <br />DATE/TIME TEST BEGAN: 12/27/01 2: l5 pm <br />SAMPLE (Date/Type): 12/26/01 Grab. <br />DATE/TIME TEST COMPLETED: 12/31/01 3:45 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 l9 na 20 20 20 20 20 <br />48 hrs l9 na 20 20 20 20 20 <br />72 hrs 19 na 20 20 19 20 20 <br />96 hrc 19 na 20 20 19 20 70 <br />Max/Min Values <br />Dilutions (% Effluent) <br />Recon Receiving 6 25% 12.5% 25% 50% 100% <br />Water Water <br />Dissolved Oxygen 8.2/6.0 na 8.2/6.0 8.3/5.9 8.4/6.2 8.8/6.3 9.5/6.7 <br />Receiving Water used for Dilution? (Y of N) N <br />Hardness, mg/L CaCO3: Receiving Water na Recon Water 180 Effluent 2 732 <br />Initial Tatal Residual Chlorine, mg/L CI2 100% Effluent: <0OS <br />Reconstituted pH: Initial 7.98 After 24 hours 7.89 <br />Receiving Water pH: Initial na After 24 hours na <br />pH in 100% Effluent: Initial 7.66 After 24 hours 7_85 <br />Ammonia as N, mg/L: 100% Effluent 2.79 Receiving Water na Recon <0OS <br />Conductivity, umhos/cm: 100% Effluent 4~ Receiving Water na <br />Alkalinity, mg/L CaCO3: 100% EfOuent 462 Receiving Water na <br />Analyst: Lee Rawlins Laboratory: Water & Environmental Testine. Inc. <br />Signature: Date: /~~lvZ <br />Comments: <br />Page 3 of 9 <br />