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A Subsidiary of Arch Westem Bituminous Group, LLC <br />April 18, 2011 <br />Ms. Kelly Morgan <br />Compliance Monitoring and Data Management Unit <br />Colorado Department of Public Health and the Environment <br />Water Quality Control Division (WQCD) P -B2 <br />4300 Cherry Creek Drive South <br />Denver, CO 80222 -1530 <br />Re: Mountain Coal Company, LLC (MCC), West Elk Mine, CDPS Permit No. CO- 0038776, <br />Discharge Monitoring Reports for the First Quarter 2011. <br />Dear Ms. Morgan: <br />Attached please find the Discharge Monitoring Reports (DMRs) for the Mountain Coal Company, LLC <br />(MCC) West Elk Mine for the 2 Quarter of 2011. During the 2n quarter, there was one (1) exceedance <br />at Outfall 014. A summary of the exceedance is provided below. <br />1. Exceedance of "pH DAILY MAX" at Outfall 014. <br />a. Outfall 014A receives stormwater runoff from a small compacted gravel area with a few <br />buildings and no exterior activity. It also receives runoff from cut slopes and vegetated <br />areas. All BMPs were in place. Two pH samples were taken in May, one of which <br />exceeded by 0.2 su. Only one sample per month is required by the permit. As stated <br />in prior communications : •. .....; ::::t the field e - ref pH has historically be <br />e <br />.... .. ......... <br />apbeov ..................... <br />. <br />MCC is unsure what ma! i My w the aboverenced reports) in compliance * with the found . following DRMS Regulations: <br />Should you or your staff have question <br />Monitoring Reports, please contact me al <br />Sincerely, <br />MOUNTAIN COAL <br />COMPANYL.L.C. <br />Ryan Sb etwood <br />Environmental Engineer <br />continues to investigate 1 <br />Enclosures: NPDES Forms (DMRs) Sf <br />4 . 05 . 13 (2)(a)(iii) - Timely submittal of DMRs to CDRMS. <br />4 . 05 . 1 3(2)(a)(ii) - Timely reporting to CDRMS of any <br />exceedances of effluent limitations. <br />4 .05.1(3) - Compliance with Federal and State water <br />quality laws that pertain to discharges <br />of surface water. <br />Tom Kaldenbach <br />Environmental Protection Specialist <br />ARMS Imapina <br />Permit. <br />Class: Hydrology <br />Type: DMRs <br />Name: Adequacy Memo <br />To: Operator <br />R C IV D <br />JUL 2 3 ?-011 <br />Division or kectamaiion, <br />Mining rand Sate*/ <br />0 O <br />0/- // <br />Date: <br />efrrpt <br />West Elk Mine <br />P0. Box f -1 <br />51741 ttljliway 133 <br />Somer.“ t, CO 81434 <br />(970) 9',) 2200 <br />Fax (979) 9w1.5050 <br />c <br />C O v L c.c O c o R A s DO <br />R ECLAMATION <br />MINING <br />SAFETY <br />cc: D. Nolte : From DMG <br />Availability of Records File - NPDES <br />T. Kaldenbach - CDRMS ••••••••• <br />..... <br />......... ""'•• •••• •• <br />