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-~ -- --- - <br />r <br />y <br />Enviro-Chem Analytical, Inc. <br />685 West Gunnison Avenue, Suite 108 <br />Grand Junction, CO 81505 <br />TABLE 4. Percentage Survival Larval Fathead Minnows after 96-hour <br />Exposure to West Elk Mine Effluent - <br />Test Dates Oct. 23-27, 2007 <br />Chronic Toxicity Test <br />West Elk Mine -Oct 2007 <br />2 species <br />OutFall 017 <br /> MHW Effluent Concentration (% <br />Replicate Control 6.50 13.0 25.0 50.0 100.0 <br />SURVIVAL (%) <br />A 100 100 100 100 100 100 <br />B 100 100 100 100 100 100 <br />C 100 100 100 100 100 100 <br />D 100 100 100 100 100 100 <br />Pooled Mean 100 100 100 100 100 100 <br />Standard <br />Deviation <br />- <br />- <br />-- <br />-- <br />- <br />- <br />