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-F <br />The fenCrept Group <br />a.~.r .~ <br />An Environmental Services Company <br />RE~~1~~® <br />APF~ 2 5 2003 <br />Oivisian o(Minerals and GeoloBY <br />April 14, 2003 <br />Mr. Henry Barbe <br />Mountain Coal Company <br />P.O. Box 591 <br />Somerset, Colorado 81434 <br />Dear Henry: <br />I am pleased to submit the results of the acute biomonitoring tests performed in April on <br />the West Elk Mine 017 discharge. No LC50 concentration was created in either test with <br />either test species. Therefore the effluent passed the whole effluent toxicity test <br />guidelines. <br />There were some survival effects seen and these should be noted, however they were <br />not enough to produce an LC50 concentration for either test. <br />Please call if you have any questions. <br />Sincere) , <br />WV ~ <br />Kel .Carr <br />Laboratory Manager <br />enclosures: Report, Invoice <br />1341 Cannon Street • Louisville, Colorado 80027 • 303-661-9324 • Fax 303-661-9325 <br />