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Region VIII Guidance for Acute Whole Effluent Reporting <br />•rERMITTEE NAME: Western Fuels Co. SITE ID: New Horizon Mine OUTFACE NO: 007 <br />50% MORTALITY TEST: X Pass Fail LC50: >100%. <br />TEST (AnimaUAgeJ: Fathead Minnow, 8 days. <br />DATE/TIME TEST BEGAN: 6/18/98 4:30 p.m. <br />SAMPLE (Date/Type): 6/17/98 Grab. <br />DATE/TIME TEST COMPLETED: 6/22/98 4:15 p.m. <br />Survival Totals <br />Dilutions (% Effluent) <br />Recon Receiving <br />6.25% 12.5% 25% 50% 100% <br />Water Water <br />loitial 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 />96 hrs 20 na 20 20 20 20 20 <br />Max/Min Values <br />Dilutions (% Effluent) <br />Recon Receiving 6.25% 12.5% 25% ° <br />50% <br />100% <br />° <br />• Water Water <br />Dissolved Oxygeu 7.3/6.0 na 7.4/5.7 7.4/5.7 7.4/5.6 7.9/5.7 8.6/5.8 <br />emnerature (°('1 21.0!20.0 na 21.0/20.0 21.0/20.0 21.0/20.0 21.0/20.0 21.0/19.0 <br />Receiving Water used for Dilution? (Y of N) N <br />Hardness, mg/L CaCO3: Receiving Water na Recon Water 412 Effluent 1800 <br />Initial Total Residual Chlorine, mg/L C12 100% Effluent: <0_OS <br />Reconstituted pH: loitial 8.35 After 24 hours 8.28 <br />Receiving Water pH: Initial na After 24 hours na <br />pH in 100% Effluent: Initial 8.22 After 24 hours 7.93 <br />Ammonia as N, mg/L: 100% Effluent 0.27 Receiving Water na Recon <0.05 <br />Conductivity, umhos/cm: 100% ERlueot2 770 Receiving Water na <br />Alkalinity, mg/L CaCO3: 100% Effluent 296 Receiving Water na <br /> <br />Analyst: Lee Rawli s La story: Water & Environmental Testin¢, Inc. <br />~v 23~~ <br />Signature: Date: <br />