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Peabody <br />�I111 ENERGY <br />Peabody Sage Creek Mining, LLC <br />Colorado Department of Public Health and Environment <br />Water Quality Control Division <br />Permits and Enforcement Section <br />4300 Cherry Creek Drive South <br />D CO 80246 1530 <br />36600 Routt County Rd. 27 <br />PO Box 250 <br />Hayden, CO. 81639 <br />(970) 276 -7001 <br />July 25, 2013 <br />RECEIVED <br />JUL 302013 <br />enver, - DIVISION OF RECLAMATION <br />MINING AND SAFETY <br />RE: Quarterly DMRs for CPDS Permit No. CO- 0048275, Peabody Sage Creek Mine <br />Dear Sir or Madam: <br />Pursuant to the quarterly reporting requirements contained in Colorado Discharge Permit <br />CO- 0048275 for the Peabody Sage Creek Mine, enclosed find the second quarter 2013 <br />discharge monitoring reports for Outfalls 002 to 004. <br />Three excursions of DMR limits occurred this quarter. All three involved the selenium <br />standard, 4.6 ug/l. The first involved a sample from Outfall 004 taken on April 18. The <br />second involved a sample from Outfall 003 taken on April 19. The third involved a <br />sample from Outfall 004 taken on May 6. Attached to this cover letter are emails which <br />discuss the details of each excursion. These emails also served as our five day notice to <br />the WQCD. Also attached are lab data, along with other documents referenced in the <br />emails. <br />During the second quarter, Sage Creek received a laboratory analytical report dated June <br />10th 2013 from the University of Mississippi's ICP -MS Facility, and the report is <br />attached. The report presents analytical results for selenium performed on portions of <br />samples that remained in custody with ACZ that were collected at Outfall 003 on April <br />19th 2013, and portions of samples that remained in custody with ACZ collected at <br />Outfall 004 on April 18th 2013. The sample remnants were sent by ACZ to the <br />University of Mississippi for selenium analysis using a high resolution ICP -MS analyzer. <br />None of the analytical results provided in the report were used in the DMR calculations. <br />Please call me at 928 - 913 -9218, or email me at jcochran @peabodyenergy.com, if you <br />have any questions. <br />Sincerely, <br />