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Ei~q <br />S Coe/COmpany Seneca Coai Company <br />tests for 004 passed. Therefore, no pattern of toxicity has been found <br />and the incident is closed. <br />The Lethality Concentration with Statistical Difference for the first <br />accelerated test for the 004 fathead's was 25g (IWC = 17.30 . The <br />Lethality Concentration with Statistical Difference for the second <br />accelerated test for the 004 fathead's was 100 (IWC = 17.30 . <br />Please contact me at 970-276-5209 if you have any questions. <br />Sincerely, <br />~~9~ <br />Dennis Jones <br />Hydrologist I <br />cc: Division of Minerals and Geology <br />Attn. Mike Boulay <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203-2273 <br />Seneca Coal Company • P.O. Box 670 • Hayden, Colorado 81639 <br />Telephone (970) 276-3707 • FAX (970) 276-3014 <br /> <br />