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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman 5[., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 86b3567 <br />FAX: (303) 832A706 <br />Interoffice MEMORANDUM <br />OLORADO <br />I V 1 5 1 0 N O F <br />INERALS <br />EOLOGY <br />:LANATIO N•NINING <br />SAFETY•SCIENCE <br />to: File, C-1980-OOI, Edna Mine, CDMR ain oWen3 <br />image files: C-1980-001 Hydrology c°vem°` <br />cc: Steven E. Leach, The Pittsburg & Midway Coal Mining Co., 116 Inverne~5'S~f1~e <br />zecuhve mxlor <br />East, Suite 207, Denver, CO 80112 Ronald w. canary <br />Beth Hessen, W WC Engineering, 611 Skyline Road, Laramie, WY 820'E4LI31on oirecror <br />Clyde Sharp, Colorado Department of Public Health and Environment, 4'3'9'®' Resource trustee <br />Cherry Creek Drive South, Denver, CO 80246 <br />from: Byron G. Walker, EPS <br />subject: Review, August 2005 NPDES Discharge Monitoring Report (DMR), CDPS Permit <br />000032638 <br />date: November 10, 2005 <br />ref: WWC Engineering letter of September 9, 2005 to CDPHE, Re: Edna Mine, <br />August 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 DMP 004 did not discharge, and discharge from DMP <br />007 did not exceed any compliance criteria. <br />Discharge Point Dischar e <br /> DMR Re ort Division Observations <br /> <br />004 none none <br />007 yes (average 0.168 and max <br />0.269 MGD) There was no dischazge from <br />the Center or West Ridge <br />Ponds. Spring flow was <br />measured at 0.2 MGD (Aug <br />23, 2005) <br />Review Checklisf for Discharge Monitoring Report (DMR) <br /> Requirement Requirement <br />Requirement citation complied with ? Comment <br /> ( es / 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 /> <br />submittal of DMRs CDMG regulation <br />°O 19) or July 28, 2005. Dates of sampling <br /> <br />to CDMG 4.05.13(2)(a)(iii) were not provided. The DMRs were <br /> received at the Division on November <br /> 10, 2005, under a W WC letter dated <br /> Se tember 9.2005. <br />Office of Office of Colorado <br />Mined Land Rxlamation Active and Inactive Mines Geological Survey <br />