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<br />~II II~II~III~II~ ~II <br />~~J~ sss <br />s~ of P~ Seneca Coai Company <br />June 1, 2001 <br />Colorado Department of Health <br />WQCD-PE-B2 <br />4300 Cherry Creek Drive South <br />Denver, CO 80222-1530 <br />Re: WET Acute Test Failure for Discharge Point 016, <br />Permit CO-0000221 <br />Dear Sir or Madam, <br />An acute WET test performed on a sample from Point 016 (collected <br />on May 22) has failed. I was notified of this failure on May 29. <br />The LC50 for the Ceriodaphnia was 95.1%, while the fathead minnow <br />test passed. The cause of the failure is unknown at this time. <br />A second sample was collected on May 30 as part of the required <br />accelerated testing. I may be reached at 970-276-5109 for any <br />questions you may have. <br />Sincerely, <br />..s~~.~ <br />Dennis Jon s <br />Hydrologist I <br />Seneca Coal Company P.O. Drawer D 'Hayden, Colorado 81639 <br />Telephone (970) 276-3707 FAX (970) 276-3014 <br />