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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Nazural Rewurcrs <br />1313 Sherman SL, Room 215 <br />Denver, Colorado 90203 <br />Phone: (303) 9663567 <br />FAX: (303) 832-0106 <br />Mined <br />Interoffice MEMORANDUM <br />7LORADO <br />VISION O F <br />IN RALS <br />EOLOGY <br />Ewf ETY•ECIENCE <br />to: File, C-1980-001, Edna Mine, CDMR BiOO~"`~ <br />Governor <br />image files: C-1980-001 Hydrology RAE~ tiGeon~ <br />cc: Steven E. Leach, The Pittsburg & Midway Coal Mining Co., 116 Inverneg&dalpy~enor <br />East, Suite 207, Denver, CO 80112 Rorwld w. cattany <br />Beth Hessen, W WC Engineering, 611 Skyline Road, Laramie, WY 82096:~ oirector <br />Clyde Sharp, Colorado Department of Public Health and Environment, ~~'~Tr~ <br />Cherry Creek Drive South, Denver, CO 80246 <br />from: Byron G. Walker, EPS <br />subject: Review, October 2005 NPDES Discharge Monitoring Report (DMR), CDPS Permit <br />000032638 <br />date: November 22, 2005 <br />ref: WWC Engineering letter of November 16, 2005 to CDPHE, Re: Edna Mine, <br />October 2005 CPDS <br />The following checklist summarizes the results of the Colorado Division of Minerals and Geology's <br />(CDMG) review of the above-referenced DMRs. <br />A statement in the referenced letter is that dischazges from DMP 004 DMP 007 did not exceed <br />any compliance criteria. <br />Dischaz a Point Dischaz e <br /> DMR Re or[ Division Observations <br /> <br />004 yes (average 0.008 and max <br />0.011 MGD) none <br />007 yes (average 0.097 and max <br />0.102 MGD) yes (0.13 MGD on October 4, <br />2005) <br />Review Checklist for Discharge Monitoring Report (DMR) <br /> Requirement Requirement <br />Requirement citation complied with ? Comment <br /> es I no <br /> The earlier of date of sample plus 90 <br /> days or same schedule as CDPS permit <br />1. Timely (28 days after close of the month, page <br />submittal of DMRs CDMG regulation Yea 19) or July 28, 2005. Dates of sampling <br />to CDMG 4.05.13(2)(a)(iii) were not provided. The DMRs were <br /> received at the Division on November <br /> 1, 2005, under a W WC letter dated <br /> October 19.2005. <br />2. Timely <br />reporting to CDMG <br />of any exceedances CDMG regulation <br />Yes By exception, there were no <br /> ii exceedances. <br />rceo . Office of Colorado <br />