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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: 008 <br />50% MORTALITY TEST: X Pass Fail LC50: >l00%. <br />TEST (Anima!/Age): Fathead Minnow, 6 days. <br />SAMPLE (Date/Type): 12/26/01 Grab. <br />DATE/TIME TEST BEGAN: 12/27/Ol 2:25 pm DATE/TIME TEST COMPLETED: 12/31/01 4:00 pm <br />Survival Totals <br />Dilutions (% Effluent) <br />Recon Receiving 6.25% 12.5% 25% ° <br />Water Water 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 />9fi hrc 70 na 70 20 20 20 1R <br />Max/Min Values <br />Dilutions (% Effluent) <br />Recon Receiving 6.25% 12.5% 25% 50% 100% <br />Water Water <br />Dissolved Oxygen 8.0/5.9 na 8.1/6.1 8.2/6.3 8.4/6.1 8.8/6.3 9.8/6.5 <br />Trmnerah~rr (°Cl 20 fi/19.2 na 2Qfi/192 20.4/19.2 2Q2/192 20.0/19.2 20.0/19.2 <br />Receiving Water used for Dilution? (Y of N) N <br />Hardness, mg/L CaC03: Receiving Water na Recon Water 180 Effluent 2 667 <br />Initial Total Residual Chlorine, mg/L Cl2 100% Effluent: <0OS <br />Reconstituted pH: Initial 7.98 After 24 hours 7.88 <br />Receiving Water pH: initial na After 24 hours na <br />pH in 100% Effluent: Initia17.18 After 24 hours 8_03 <br />Ammonia as N, mg/L: 100% Effluent 3_04 Receiving Water na Recon <0OS <br />Conductivity, umhos/cm: 100% Effluent 4 230 Receiving Water na <br />Alkalinity, mg/L CaC03: 100% Effluent 500 Receiving Water na <br />Analyst: Lee Rawlings Laboratory: Water & Environmental Testing, Inc. <br />Signature: <br />Dale: //y/Z <br />Page 3 of 10 <br />