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W.E.T. Inc. <br />per & Environmental Testing /nc. 399 West 1100 North, B Orem, Utah 8057 (80!)135-791 Fax(801)235-9560 <br />Acute Whole Effluent Toxicity Chemical Result Report <br />June 23, 1998 <br />CUSTOMER NAME: PHONE NUMBER: (801)864-2165 <br />Western Fuels Co. (New Horizon Mine) FAX NUMBER: (801)864-2168 <br />Attn: Todd Lefevre (007) <br />P.O. Box 628 <br />Nucla, Co 81424 <br />SAMPLE DESCRIPTION: <br />Chemistries to go with Acute 2 Species Toxicity Test Collected 6/17/98. <br />Sample <br />Source Test <br />Performed Log <br />Number Acute <br />Ceriodaphnia Acute <br />Minnow <br />Effluent Total Hardness, Recon (EPA 130.2) 2161 412 mg/L 412 mg/L <br />• Total Hardness, Effluent (EPA 130.2) 2161 1,800 mg/L 1,800 mg/L <br /> Total Hardness, Receiving Water (EPA 130.2) na na mg/L na mg/L <br /> Ammonia, Effluent (EPA 350.2/350.3) 2161 0.27 mg/L 0.27 mg/L <br /> Ammonia, Receiving Water (EPA 350.2/350.3) na na mg/L na mg/L <br /> Initial Chlorine Residual (EPA 330.5) 2161 <0.05 mg/L <0.05 mg/L <br /> Final Chlorine Residual (EPA 330.5) 2161 na mglL na mg/L <br /> Conductivity, Effluent (EPA 120.1) 2161 2,770 umhos/cm 2,770 umhos/cm <br /> Alkalinity, Efnuent (EPA 310.1) 2161 296 mg/L CaCO, 296 mg/L CaCO, <br /> Conductivity, Receiving Water (EPA 120.1) na na umhos/cm na umhos/cm <br /> Alkalinity, Receiving Water (EPA 310.1) na na mg/l; CaCO~ na mg/L CaCO~ <br /> Recon Initial pH (EPA 150.1) 2161 8.35 8.35 <br /> After 24 hours pH (EPA 150.1) 2161 8.55 8.28 <br /> 100% Initial pIl (EPA 150.1) 2161 8.22 8.22 <br /> 100% After 24 hours pH (EPA 150.1) 2161 7.99 7.93 <br /> Receiving Water Initial pH (EPA 150.1) na na na <br /> Receiving Water After 24 hours pH (EPA 150.1) na na na <br />• ~ ~ <br />Analy~~Lee Rawlings, Chertfist <br />Water & nvrronmental Testing, Inc. <br />