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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 -8106 <br />December 14, 2011 <br />Alan D. Cox <br />Homestake Mining Company <br />PO Box 98 <br />Grants, NM 87020 <br />Re: Pitch Project, Permit M- 1977 -004, Indian Creek Replacement Piezometer Report. <br />Dear Mr. Cox, <br />Thank you for the report detailing the installation of the two replacement piezometers at the Pitch Project. <br />Homestake has been monitoring and reporting groundwater data from a series of piezometers at the site, <br />and will continue to do so during coming years. With the failure of two of the wells, specifically IC- <br />10300 and IC- 10370, it was clear that two new wells would be necessary. <br />The report includes all the information needed to describe the successful installation of the two <br />replacement wells, and the permanent closure of the two failed wells. It is interesting that replacement <br />piezometer number IC- 10370R encountered such a significant depth of voids in the boulders at or near the <br />bottom of the waste rock fill. However, since groundwater was detected in the well and the correct <br />segment of the column was screened, this office accepts the current well installation. <br />Please continue to include the past data from the piezometers that are now closed, in the reports that <br />Homestake provides annually, as well as data from the new wells. If you have any questions I may be <br />reached at the Division's Durango Field Office: 691 CR 233, Room A -2, Durango, CO 81301; telephone <br />970 - 247 -5193. <br />Have a good holiday season. <br />Sincerely, Oivvi/Vit <br />Bob Oswald <br />Environmental Protection Specialist <br />Ec: Steve Shuey, DRMS Grand Junction <br />USFS, 216 N. Colorado, Gunnison, CO 81230 <br />(c: \11 -12 docs \pitch piezo replacement/rco) <br />Office of <br />Mined Land Reclamation <br />STATE OF COLORADO <br />DEC 1 2011 <br />COLORADO <br />D I V I S I O N O F <br />RECLAMATION <br />MINING <br />— &— <br />SAFETY <br />John W Hickenlooper <br />Govemor <br />Mike King <br />Executive Director <br />Loretta E. Pileda <br />Director <br />Office of <br />Denver • Grand Junction • Durango Active and Inactive Mines <br />