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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%MORTALITYTEST: X Pass Fail LC50: >]00%. <br />TEST (Animal/Age): Ceriodaphnia <24 hours. <br />DATE/TIME TEST BEGAN: 12/27/01 2:45 pm <br />SAMPLE (Date/Type): ] 2/26/01 Grab. <br />DATE/TIME TEST COMPLETED: 12/29/01 2:45 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 20 na 20 20 20 20 20 <br />Max/Min Values <br />Dilutions (% Effluent) <br />Recon Receiving 6.25% 12.5% 25% ° ° <br />Water Water 50 /0 100 /o <br />Dissolved Oxygen 7.3/6.5 na 7.4!6.7 7.516.7 7.5!6.7 7.716.8 8.3(7.1 <br />Temneratnre (°(`1 20 fi/19 4 na 20 fi/19 4 20 4/19.4 70 4/19.4 70 4/19 4 70 4/19 4 <br />Receiving Water used for Dilution? (Y of N) N <br />Hardness, mg/L CaC03: Receiving Water na Recon Water 180 Effluent2732 <br />Initial Total Residual Chlorine, mg/L C12 100% Effluent: <0OS <br />Reconstituted pH: Initial 7.98 After 24 hours 8.08 <br />Receiving Water pH: Initial na After 24 hours na <br />pH in 100% Effluent: Initial 7.66 After 24 hours 7.93 <br />Ammonia as N, mg/L: 100% Effluent Initial 2_79 Receiving Water na Recon Initial <0L)5 <br />Conductivity, umhos/cm: 100% Eftluent 4 350 Receiving Water na <br />Alkalinity, mg/L CaC03: 100% EfOuent 462 Receiving Water na <br />Analyst: Lee Rawlins Laboratory: Water & Environmental Testin¢, Inc. <br />Signature: <br />Date: ~ Y ~Z- <br />Page S of 9 <br />