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~~/~ <br />S c~elVCom <br />~II II~~I~II~I~~~ ~I~ ~~~~.~ <br />sss <br />Seneca Coal Company <br />August 19, 1998 <br />Colorado Department of Health <br />Attn. Carla Lenkey <br />WQCD-PE-B2 <br />4300 Cherry Creek Drive South <br />Denver, CO 80222-1530 <br />RECEIVED <br />AUG 2 6 1998 <br />DIV. OF MINERALS <br />8 GEOLOGY <br />RE: WET Test Failure at Discharge Point 005, Permit No. CO-0000221 <br />Dear Ms. Lenkey, <br />Attached are the second WET test results for Point 005. The first <br />test results were sent to you on July 17 with a memo notifying you <br />of the failure. As was the case with the first failure, the <br />Ceriodaphnia test failed (6 out of 20 survivors with 100% effluent) <br />while the Daphnia test passed (18 out of 20 survivors with 100% <br />effluent). <br />As was recommended by your Division, a Salinity Toxicity <br />Relationship (STR) test was run on a sample taken from this pond. <br />This report, also enclosed, indicates that salinity was indeed the <br />cause of the Ceriodaphnia failures. This STR test completes the <br />Partial Toxicity Investigation (PTI) that we committed to in a <br />second memo dated July 17, 1998 (actually written on July 23.) <br />In regards to the sediment spill at Point 005, which was reported <br />to you on August 3, all of that sediment was cleaned out of the <br />discharge channel on August 4. The clean out of this pond is still <br />in progress and will hopefully be complete by the end of this <br />month. Please call me at 970-276-5109, or e-mail me at <br />djones@peabodygroup.com, if you have any questions. <br />Sincerely, <br />~~ ~~ <br />Dennis Jones <br />Hydrologist I <br />/cc: Mike Boulay (CDMG) <br />Seneca Coal Company ' P.O. Drawer D Hayden, Colorado 81639 <br />Telephone (970) 276-3707 FAX (970) 276-3014 <br />