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6/10/2013 14:1014:10 <br />Jones, Dennis D. <br />From: Jones, Dennis D. <br />Sent: Thursday, May 16, 2013 14:41 <br />To: 'Morgan - CDPHE, Kelly' <br />Cc: Cochran, John N. <br />Subject: FW: yoast mine outfall 011 possible excursion, CDPS CO- 0000221 <br />May16, 2013 <br />Kelly Morgan, <br />On May 14, 2013, 1 reviewed recently received lab data for a sample collected on 4/29 at Outfall 011 at the Yoast Mine, <br />Seneca Coal Company, CDPS CO- 0000221. The total recoverable iron (TR Fe) value was 1.84 mg /I. This sample was <br />collected for NPDES compliance. This outfall began discharging on that week, so we had to sample then. <br />The monthly average TR Fe limit in the NPDES permit is 1 mg /I as a monthly average. There is no daily max limit. <br />However, there was a 'temporary modification' of the TR Fe limit on Grassy Creek (to which 011 reports to) at the time <br />the CDPS permit was last amended (5/26/10). That 'temp. mod.' expired on 5/31/11, and the CDPS permit reflects that <br />expiration date in its effluent limits. That 'temp. mod.' was then extended to 12/13/13, and then later extended to <br />expire 12/31/14. The 'temp. mod. (type iii)' sets the iron standard at 'existing quality'. These most recent 'temp. mods' <br />are not in our current NPDES permit, as it is currently under administrative extension since 10/31/11. <br />The facility and outfall are being properly operated and maintained. This possible exceedance occurred as a result of <br />spring snowmelt and runoff. In addition, we did get about 2 inches (melted water equivalent) of late, heavy snow in April <br />prior to the sampling event. Therefore, we consider this to be an upset condition. <br />I left a phone message with Kelly Morgan with the WQCD about this on May 14'h at 2 PM MDT. I also followed up with <br />an email to her on that same date. PSCM considers these to be our CDPS permit required 24 hour notification. The <br />permit requires that we also submit within 5 days a written report. If this email does NOT fulfill that requirement, please <br />let me know, and I will follow up with a mail letter. <br />Thank you, <br />Dennis Janes <br />Hydrologist - Seneca Coal Co. <br />970 - 276 -5209 <br />djones(apeabodyenergy.com <br />Peabodq <br />.14TO i <br />37796 County Rd. 53 <br />PO Box 670 <br />Hayden, CO 81639 -0670 <br />