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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 C O L O ILA D O <br />Denver, Colorado 80203 D I v I s t O N O F <br />Phone: (303) 866-3567 RECLAMATION <br />FAX: (303) 832-8106 MINING <br /> <br />July 24, 2008 SAFETY <br />Bill Ritter, <br />overnor Jr. <br />J.E. Stover, P.E. G <br />J.E. Stover & Associates, Inc. Harris D. Sherman <br />P.O. Box 60340 Executive Director <br />Grand Junction, Colorado 81506 Ronald W. Cattany <br />Division Director <br />Natural Resource Trustee <br />Re: McClave and Munger Canyon Mines <br />Permits C-1980-004 (McClane) and C-1981-020 (Munger) <br />2006-2007 Water Year Annual Hydrology Report <br />Dear Mr. Stover: <br />The Division has reviewed CAM Mining LLC's 2007 Annual Hydrology Report (AHR) for the <br />McClane and Munger Canyon Mines. The AHR was received on January 14, 2008 and contains <br />water quantity and quality data for the 2006-2007 Water Year. One report is submitted for both <br />mines since they are in close proximity and the surface water and groundwater monitoring <br />programs are essentially combined for the two sites. <br />The frequency of data collection for surface and groundwater is in compliance with the approved <br />monitoring plan contained in the permit document. All required monitoring data were collected <br />and reported. There were two discharges from the McClane sediment pond during the water year <br />and there was no discharge from the Munger sediment pond. Mine inflow water was discharged <br />from the mine during the water year. Outfall 002A provides for discharge from the underground <br />mine to East Salt Creek. All discharge monitoring and reporting is done in accordance with the <br />CDPS Permits for each site. <br />The Probable Hydrologic Consequences discussion in the permit document and the Division's <br />previous findings indicate that mine discharge will have a small impact on East Salt Creek. The <br />AHR states that the mines will have negligible effect upon the hydrologic regime of East Salt <br />Creek. This appears to be consistent with the data reported in the 2007 AHR. From the <br />monitoring data provided there also does not appear to be any detectable impact to the East Salt <br />Creek alluvium. <br />Please let me know if you have any questions regarding my review of the 2007 AHR for the <br />McClane and Munger Canyon Mines. <br />Sincerely, <br />/ <br />A / <br />(I CIW R <br />Michael P. Boulay <br />Environmental Protection Specialist <br />C: Denver File <br />Office of Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines