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freshwater. <br />Data Analysis <br />Data from the tests were analyzed on a Computer Source 386 personal computer. Where <br />applicable, LC50's were calculated using EPA's TOXDATMnlti-Method Program according to the <br />binomial, probit, or moving average methods. Statistically significant differences between control <br />and exposed organisms were determined using the TOXSTAT software developed at the <br />University of Wyoming. <br />RESULTS <br />The results of the tests are summarized in Appendix 2. There was mortality was seen in <br />the Daphnia magna test where survival was 50% in the 100% effluent and 100% in every <br />remaining effluent concentration. Survival was 100% in the control. Binomial statistical analysis <br />determined the LC50 concentration at 100% effluent. <br />The fathead minnow test showed no toxicity, with 100% survival in every effluent <br />concentration. Control survival was 100%. <br />DISCUSSION <br />The sample passed whole effluent toxicity test guidelines for both test species. <br />APHA/AWWANVPCF. 1985. Standard Methods far the Examination of Water and Wastewater. <br />16th Edition. American Public Health Association. 1268 pp. <br />Hach Chemical Company. 1978. DR-EL12,3 and 4 methods manual. Hach Chemical Company, <br />Loveland, Colorado. <br />Weber, C.I. 1993. Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters <br />to Freshwater and Marine Orga:iisms (Fourth Edition). EPA 600/4-90/023F. 293 pp. <br />