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<br />The Pittsburg & Midway Coal Mining Co. <br />A ChevronTezaco Company <br />4601 DTC Boulevard, Sizlh Floor, Denver, CO 80237 ~ Phone (303 930-3600 <br />December 29, 2004 <br />Mr. Jeff Coombe <br />Colorado Department of Public Health and Environment <br />4300 Cherry Creek Drive South <br />Denver, CO 80246-1530 <br />RE: CDPS Permit No. CO-0032638 <br />Dear Mr. Coombe, <br />R~~ ~`l ~.s~~'A <br />SAN 0 J LG~i~ . <br />Division of Minerals and Geology <br />In response to your letter of December 20, 2004 indicating a violation of permit <br />conditions for outfall 007T in October, 2004 a brief explanation is in order. A person in <br />the consulting company responsible For this documentation who was unfanliar with <br />P&M's pernut and unfamiliar with the details behind the water sample analysis process <br />was given the responsibility of filling out the reports. I, as the signatory party for P&M, <br />did not catch the discrepancy. Method 245.1, used for analyzing for mercury, has a lower <br />detection limit of 0.0002 mg/1. The documentation from the lab indicates mercury at <br />0.0002 mg/l. This has been the case since at least 1999 which were the oldest records to <br />which I have ready access for review. Mercury has historically been reported as < 0.0002 <br />mg/1 with no exceedence. However, since this information was not known to the person <br />filling out the form, they assumed an exceedence had occurred. <br />Enclosed is an amended DMR for outfa11007T for October, 2004 which accurately <br />reflects the water quality analysis. In addition; an amended DMR for outfa11004T for• <br />October, 2004 is included as I found mercury analytical data was not included at all iri the <br />original submittal. <br />Outfall information for November has these same issues but has not }'et been submitted to <br />your office. I will make the necessary corrections prior to submittal. <br />>f you have other questions or additional response on this issue is required, please contact <br />me at (303) 930-4013. <br />Sincerely, <br />Steven E. Leach <br />Sr. Environmental Engr. <br />Ba-oo~ <br />cc: B. Heesea - WWC <br />B. Walker - CDMG <br />