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<br /> <br /> <br /> <br />1 <br />1 <br />Si1l~ipfARIZED RESULTS (as % effluent) FOR KERR COAL CO. NET TESTS: <br />Discharge 002, January 1994 <br />1994: Discharge 002 NOEC IC25 <br />First Quarter NOEC LC50 (growth or (growth or <br />Test Performed (survival) (survival) biomass) biomass) <br />Ceriodaphnia 3 brood chronic 100% > 100% 75% 68.29 (95% CI, <br /> 11.9 to 83.2) <br />Fathead minnow 7d chronic 100% > 100% 100% > L00% <br />' REFERENCES: <br />Colorado Department of Health. June 1993. Guidelines for conducting whole effluent toxicity tests. <br />Norberg-King, T. 1988. An interpolation estimate for chronic toxicity: The ICp approach. National <br />Effluent Toxicity Assessment Center Technical Report OS-88. <br />Weber, C.I., W.B. Horning, D.J. Klemm, T.W. Neiheisel, P.A. Lewis, E.L. Robituon, ]. Menkedick, <br />and F. Kessler. 1989. Short-Term Methods for Estimating the C7tronic Toziciq~ of Ej/Juents and <br />Receiving Waters to Marine and Estuarine Organisms, Second Edition. U.S. Environmental <br />Monitoring Systems Laboratory, Cincinnati, Ohio. EPA/600/4-898/001. <br />