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Region VIII Guidance for Acute Whole Effluent Reporting <br />. RMITTEE NAME: Western Fueis Co. SITE ID: New Hotizon Mine OUTFACE NO: 007 <br />50% MORTALITY TEST: X Pass Fail LC50: >100%. <br />TEST (Anima!/Age): Fathead Minnow, 7 days. <br />DATE/TDKE TEST BEGAN: 3/27/2002 1:10 pm <br />SAMPLE (Date/1ypeJ: 3/26/2002 Grab. <br />DATE/TIME TEST COMPLETED: 3/31/2002 1:15 pm <br />Survival Totals <br />Dilutions (% Effluent) <br />Recon Receiving 6.25 /0 12.5 /° <br />° ° 25% 50% 100% <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 />96 hn 20 na 20 20 20 20 70 <br />Maa/Min Values <br />Dilutions (% Effluent) <br />Recon Receiving 6.25% 12.5% 25% 50% 100% <br />• Water Water <br />Dissolved Ozygcn 7.1/6.2 na 7.3/6.2 7.7/6.3 7.8/6 4 8.5/6.5 9.9/6.3 <br />1'emneratvre (°Cl 20 4/19.2 na 20.4/19.2 20.4/192 20.4/192 20-4/19 2 20 4/192 <br />Receiving Water used for Dilution? (Y of N) N <br />Hardness, mg/L CaCO3: Receiving Water na Recon Water 184 Effiuent 2 504 <br />Ininal Total Residual Chlorine, mg/L Cl2 100% Efflaent: <0.05 <br />Reconstituted pH: Ittitia18.24 After 24 hotus 8.26 <br />Receiving Water pH: Initial na After 24 hours na <br />pH in 100% Effluent: Initia17.79 After 24 hours 8_00 <br />Ammonia as N, mg/L: 100% Effluent 098 Receiving Water na Recon <0.05 <br />ConduMivity, umhoslcm: 100% Effluent3990 Receiving Water na <br />Alkalinity, mg/L CaCO3: 100% Effluent 394 Receiving Water na <br />Analyst: Lee Rawlii ~ L boratory: Water Bc Environmental Tes[inz Inc. <br />Signature• ~~ <br />0 <br />. ^ amments: <br />~: . <br />~; . Page 3 of 9 <br />Date: Y~~y - <br />