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Wyoming Fuel. 8505-087-135 <br />2.0 Materials and Methods <br />2.1 Test Effluent <br />The test effluent was delivered to ERT via Greyhound Bu <br />Lines on July 1, 1988. The 8-liter sample, labeled "Pond 002B, <br />Outlet, 6/29/88, 14:29" was received packed in ice and was <br />designated ERT sample # 404. The effluent was chemically <br />characterized as follows: hardness, 13 mg/L as CaCOa; <br />alkalinity, 669 mg/L as CaCOa; conductivity, 1,090 umhos/cm; <br />total residual chlorine, < 0.01 mg/L; and total ammonia, 0.92 <br />mg/L as N. <br />2.2 Dilution Water <br />Dilution water was reconstituted water prepared to obtain a <br />hardness and alkalinity similar to the actual receiving water <br />(Purgatoire P.iver). A 4-liter sample of the Purgatoire River <br />water (ERT sample #386) was delivered to ERT with a previous <br />effluent sample on June 10, 1988 and characterized as follows: <br />hardness, 110 mg/L as CaCO~; and alkalinity, 102 mg/L as CaCOa. <br />The reconstituted dilution water (ERT RW #90) was prepared <br />according to the USEPA (1985) method for preparation of synthetic <br />freshwater (modified to match the characteristics of the <br />receiving water) and had the following characteristics: <br />hardness, 124 mg/L as CaCOa alkalinity, 115 mg/L as CaCOa; <br />conductivity, 958 umhos/cm; total residual chlorine, < 0.01 mg/L; <br />and total ammonia, < 0.10 mg/L as N. <br />+. <br />6 <br />