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Enviro-Chem Analytical, Inc. <br />685 West Gunnison Avenue, Suite 108 <br />Grand Junction, CO 81505 <br />TABLE 1. Arrival Chemistry Values for Final Effluent Samples from <br />West Elk Mine - Somerset, Colorado <br /> Effluent #1 <br />Date Received 4/15/2008 <br />H 8.259 <br />Cond. umhos/cm 2860 <br />Temp. C 1 <br />Alk. (mg CaC03/L) 1480.92 <br />Hard. (mg CaC03/L) 49.6 <br />Diss. O2 (mg/L) 10.3 <br />Ammonia m /L <1.0 <br />Residual CI m /L <0.02 <br />Chronic Toxicity Test <br />West Elk Mine - April 2008 <br />2 Species <br />Outfall 001