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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: >l00%. <br />TEST (Animal/Age): Fathead Minnow, 6 days. <br />DATE/TIME TEST BEGAN: (2/27/01 2:15 pm <br />SAMPLE (Date/TypeJ: 12/26/01 Gmb. <br />DATE/TIME TEST COMPLETED: 12/3!/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 />Max/Min Values <br />Dilutions (% Effluent) <br />Recott 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 />Temnrrature t°C1 70 fi/19 2 na 70 fi/19.2 70 4/19.2 70 4/19.7 Ill 4/19 2 70 4/19 7 <br />Receiving Water used for Dilution? (Y of N) N <br />Hardness, mg/I, CaCO3: Receiving Water na Recon Water 180 Effluent 2,y732 <br />Initial Tatal Residual Chlorine, mg/L C12 100% Effluent: <0_OS <br />Reconstituted pH: Initial 7.98 After 24 hours 7.89 <br />Receiving Water pH: Initial na Auer 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/em: 100% Effluent 4 350 Receiving Water na <br />Alkalinity, mg/L CaCO3: 100% EfOucnt 462 Receiving Water na <br />Analyst: Lee Rawlins ~ Laboratory: Water & Environmental Testing, Inc. <br />Signature• <br />Comments• <br />Dale: /j71 "L <br />Page 3 of 9 <br />