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Enviro-Chem Analytical, Inc. <br />2493 Hwy 6 Unit 7 <br />Grand Junction, CO 81505 <br />TABLE 1. Arrival Chemistry Values for Final Effluent Samples from <br />Elk Creek Mine - Outfall 01513 <br />Chronic Toxicity Test <br />OXBOW - July 2013 <br />2 Species <br />Effluent #1 <br />Effluent #2 <br />Effluent #3 <br />Date Received <br />7/22/2013 <br />7/24/2013 <br />7/26/2013 <br />H <br />7.81 <br />7.86 <br />7.93 <br />Cond. umhos/cm <br />4210 <br />4450 <br />4680 <br />Temp. C <br />1.4 <br />1.6 <br />1.4 <br />Alk. (mg CaCO3/L) <br />1773 <br />1816 <br />1922 <br />Hard. (mg CaCO3 /L) <br />115.83 <br />118.76 <br />123.44 <br />Diss. 02 (mg /L) <br />9.1 <br />9.1 <br />9.1 <br />Ammonia (mg/L <br /><1.0 <br /><1.0 <br /><1.0 <br />Residual CI (mg/L <br /><0.02 <br /><0.02 <br /><0.02 <br />Chronic Toxicity Test <br />OXBOW - July 2013 <br />2 Species <br />