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Enviro -Chem Analytical, Inc. <br />2493 Hwy 6 Unit 7 <br />Grand Junction, CO 81505 <br />Chronic Toxicity Test <br />OXBOW - July 2013 <br />2 Species <br />TABLE 4. Percentage Survival and Growth as Mean Dry Weight (mg) for <br />Larval Fathead Minnows After 7 -Day Exposure to Elk Creek Mine <br />Effluent - Test Dates July 23 -30, 2013 <br />[:R:elicate <br />MHW <br />Control <br />Effluent Concentration % <br />6.5 <br />13.0 <br />25.0 <br />50.0 <br />100.0 <br />SURVIVAL (% <br />A <br />100 <br />100 <br />100 <br />100 <br />100 <br />100 <br />B <br />100 <br />100 <br />100 <br />100 <br />100 <br />100 <br />C <br />100 <br />100 <br />100 <br />100 <br />100 <br />100 <br />D <br />100 <br />100 <br />100 <br />100 <br />100 <br />100 <br />Pooled Mean <br />100 <br />100 <br />100 <br />100 <br />100 <br />100 <br />Standard <br />Deviation <br />— <br />— <br />— <br />— <br />— <br />-- <br />GROWTH (mg) <br />A <br />0.188 <br />0 156 <br />0.177 <br />0.213 <br />0 289 <br />0.278 <br />B <br />0.253 <br />0.268 <br />0.213 <br />0.267 <br />0.302 <br />0.196 <br />C <br />0.277 <br />0.239 <br />0.24 <br />0.23 <br />0.251 <br />0.234 <br />D <br />0.277 <br />018 <br />0.253 <br />0 214 <br />0.175 <br />0.266 <br />Pooled Mean <br />0.24875 <br />0.21075 <br />022075 <br />0 231 <br />0.25425 <br />0.2435 <br />Standard <br />Deviation <br />018 j <br />0.07 <br />0.08 <br />0.12 <br />0.1 <br />0.27 <br />