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Region VIII Guidance for Acute Whole Effluent Reporting <br />• PERMITTEE NAME: Western Fuel Colorado SITE ID: New Horizon Mine OUTFACE NO: 007 <br />50% MORTALITY TEST: X Pass Fail LC50: >100%. <br />TEST (AnimoUAge): Fathead Minnow, 9 days. SAMPLE (Date/Type): 9/16/98 Grab. <br />DATE/TIME TEST BEGAN: 9/17/98 12:00 p.m. DATE/TIME TEST COMPLETED: 9/21/98 12:15 p.m. <br />Survival Totals <br />Dilulious (% Effluent) <br /> Recon <br />Water Receiviug <br />Water 6 25% 12 50/a o <br />25 /0 0 <br />50 /0 0 <br />100 /o <br />luitial 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 />Maa/Min Values <br />Dilulious (% Effluent) <br />Recon Receiving 6 25% ° ° ° o <br />Water Water 12.5/0 25/0 50% 100% <br />• Dissolved Oxygeu 7.6/5.1 na 7.ti/4.9 7.6/5.2 7.6/5.1 8.1/5.7 8.7/6.5 <br />Temperature!°Cl 21.0/19.R na 21.0/19.R 21.0/19.R 21.0/19.R 21.0/19.8 21.0/19.8 <br />Receiving Water used for Dilution? (Y of N) N <br />Hardness, mg/L CaCO3: Receiving Water na Recon Water 384 Effluent <br />Initial Total Residual Chlorine, mg/L C12 100% Effluent: <0.05 <br />Reconstituted pH: Initial 8.32 After 24 hours 8.40 <br />Receiving Water pH: Initial na After 24 hours na <br />pH ip 100% Effluept: Initial 7.43 After 24 hours 7.79 <br />Ammonia as N, mg/L: 100% Effluent .45 Receiving Water na Recon <0.05 <br />Conductivity, umhos/cro: 100% Effluent 2460 Receiving Water na <br />Alkalinity, mg/L CaCO3: 100% Eflluept 308 Receiving Water na <br />Analyst: Lee Rawlin La rstory: Water & Environmental Testing, Inc. / <br />Signature: ~~~~ ~vr," Date: ~ ~g <br />~/ <br />.Comments: <br />