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Region VIII Guidance for Acute Whole Effluent Reporting <br />'ERMITTEE NAME: Western Fuels Co. SITE [D: New Horizon Mine OUTFACE NO: 007 <br />50% MORTALITY TEST: X Pass Fail LC50: >100%. <br />TEST (AnimaUAgeJ: Fathead Minnow, 7 days. <br />SAMPLE (Date/TypeJ: 9/20/00 Grab. <br />DATE/I'[ME TEST BEGAN: 9/21/00 12:45 p.m. DATE/1'IME TEST COMPLETED: 9/25/00 12:15 p.m. <br />Survival Totals <br /> Dilutions ( % Effluent) <br /> Recon Receiving <br /> 6.25% 12.5% <br />25 /° ° <br />50 /° ° <br />100 /° <br /> Water Water <br />Initial 20 na 20 20 20 2U 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 />96 hrs 20 na 20 20 20 20 70 <br />Max/Min Values <br /> Dilutions (% Effluent) <br /> Recon Receivin <br />g <br />° <br />6.25 /° 12.5 /° <br />25% <br />50% <br />100% <br /> Water Water <br />Dissolved Oxygen 8.1/6.7 na 7.5/6.6 7.5/6.4 7.6/6.4 8.1/6.7 9.2/7.2 <br />Temnerah~rc !°C1 284/19.0 na 204/190 204/19(1 20.2/190 20.0/19.0 200/190 <br />Receiving Water used for Dilution? (Y of N) N <br />Hardness, mg/L CaC03: Receiving Water na Recon Water l84 Effluent l 588 <br />Initial Total Residual Chlorine, mg/L C12 100% Effluent: <0OS <br />Reconstituted pH: Initial 8.44 After 24 hours 8.28 <br />Receiving Water pH: Initial na After 24 hours na <br />pH io 100% Effluent: Initial 8.00 After 24 hours 8.05 <br />Ammonia ss N, mg/L: 100% Effluent 1.42 Receiving Water ne Recon <0_OS <br />Conductivity, umhos/cm: 100% Effluent 2~ Receiving Water na <br />Alkalinity, mg/L CaC03: 100% Effluent 394 Receiving Water na <br />Andyst: Lee Rawlin ~ LaboQtory: Water & Environmental Testin¢, Inc. <br />Signature: _,/H""/\Gf~yv ve-e-er~f <br />Date: Z <br />