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Region VIII Guidance for Acute Whole Effluent Reporting <br />~ERMITTEE NAME: Wes[em Fuels Co. SITE ID: New Horizon Mine OUTFACE NO: 007 <br />50% MORTALITY TEST: X Pass Fail LC50: >100%. <br />TEST (AnimaUAge): Fathead Minnow, 7 days <br />DATE/TIME TEST BEGAN: 5/24/02 11:15 am <br />SAMPLE (Date/Type): 5/23/02 Grab. <br />DATElTIME TEST COMPLETED: 5/28/02 12:45 pm <br />Survival Totals <br />Dilutions (% Effluent) <br />Recon Receiving 6.25% 12.5% ° ° <br />Water Water 25 /0 50 /0 100 /o <br />Initial 20 na 20 20 20 20 20 <br />24 hrs 20 na 20 20 20 20 20 <br />48 hrs 20 na 20 20 20 20 20 <br />72 hrs 20 na 20 20 20 20 20 <br />Max/Min Values <br />Dilutions (% Effluent) <br />Recon Receiving 6.25% 12.5% 25% 50% ° <br />Water Water 100 /o <br />. Dissolved Oxygen 6.9/5.2 na 7.0/5.5 7.3/6.0 7.5/5.5 8.3/6.1 9.3/6.8 <br />Trmnrrah~re !°('1 70 0/19 7 na 70 0/19 2 70 0/19 7 70 0/19 7 70 0/19 2 70 0/19 1 <br />Receiving Water used Cor Dilution? (Y of N) N <br />Hardness, mg/L CaCO3: Receiving Water na Recon Water 180 Effluent 1__ 236 <br />Initial Total Residual Chlorine, mg/L C12 100% Effluent: 0.07 <br />Reconstituted pH: Initial 8.19 After 24 hours 8.16 <br />Receiving Water pH: Initial na After 24 hours na <br />pH in 100% Effluent: Initial 8.25 After 24 hours 8,30 <br />Ammonia as N, mg/L,: 100% Effluent <0.05 Receiving Water na Recon <0_OS <br />Conductivity, umhos/cm: 100% EfOucnt 2 130 Receiving Water na <br />Alkalinity, mg/L CaCO3: 100% Effluent 282 Receiving Water na <br />Lab Director: Lee R wlin s Laboratory: Water & Environmental Testin¢, Inc. <br />Signature A~ ~- <br />Comments: <br />r~ <br />Date• ~~~z <br />Page 3 of 9 <br />