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STATE OF COLORADO <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX; (303) 832$106 <br />Interoffice MEMORANDUM <br />COLORADO <br />DIVISION OF <br />RECLAMATION <br />MINING <br />- &- <br />SAFETY <br />to: File, C-1980-001, Edna Mine, CDMR Bill Ritter, lr. <br />image files: C-1980-OOI Hydrology Governor <br />cc: Steven E. Leach, The Chevron Mining Company, 116 Inverness Drive Elsa; StYlt~an <br />207, DenVeC, CQ 80112 ExecUtrve DlfeClor <br />Beth Hessen W WC En meerin 611 Sk line Road Laramie WY 820'~Qnald W. Cattany <br />g, g> y > e rDNision Director <br />from• Byron G. Walker, EPS Natural Resource Trustee <br />subject: Review, July 2007 CPDS Monitoring Report (DMR), CDPHE Permit 000032638 <br />date: August 31, 2007 <br />ref: W WC Engineering letter of August 17, 2007 to Colorado Division of <br />Reclamation, Mining and Safety, Re: Edna Mine, July 2007 CPDS <br />The following checklist summarizes the results of the Colorado Division of Reclamation, Mining <br />and Safety (Division) review of the above-referenced DMRs. <br />A statement in the referenced letter is that discharges from DMP 004 and DMP 007 did not <br />exceed any compliance criteria. <br />Discharge Point Discharge, mgd <br /> DMR Division Observations <br /> avera a maximum 16 July 07 <br /> <br />004 (Moffat Pond) no dischaz e trickle <br />007 (flume Center RR~e Pond) 0.057 0.081 0.01 measured <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 <br /> Colorado Mined 90 days or same schedule as CDPS <br />L. Timely Land permit (28 days after close of the <br />submittal of Reclamation <br />Yes month, page 19). Dates of sampling <br />DMRs to the Boazd (CMLRD) were not provided. The DMRs were <br />Division regulation received at the Division on August <br /> 4.05.13(2)(a)(iii) 23, 2007, under a WWC letter dated <br /> Au ust 17, 2007 <br />R T i~M7 nnnD rnpc o 'r rnnnz~~~ ~I f 7 <br />Office of Office of <br />Mined Land Reclamation Denver Grand )unction Durango Active and inactive Mines <br />