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0 <br />BATTLE MOUNTAIN RESOURCES, INC. '? ?? SAS <br />September 10, 2010 <br />Mr. Allen Sorensen <br />State of Colorado <br />Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Re: Battle Mountain Resources Inc. <br />San Luis Project <br />CMLRB Permit No. M-88-112 <br />August 2010 Monthly Report ./ <br />Dear Mr. Sorensen: <br />- 05.yA?. <br />tl',•.,. F. .. a <br />SEP -1 5 1-' U- 10 V-11 <br />Div4ivf I of Reclamation, ,7 <br />Ukft and Sadwty <br />The following summarizes monitoring and site activities at the Battle Mountain Resources Inc. (BMRI), <br />San Luis Project for the month of August, 2010. <br />Surface and ground water monitoring and q=lysis were completed for all required sites during the month <br />per the terms and conditions of the TR-32 Quality Assurance and Quality Control (QA/QC) plan. <br />Vacuum on the tailing lysimeters was verified on August 31s`, no water was present for sampling and <br />subsequent analysis. <br />Depths to water were collected for the tailing impoundment main embankment piezometers and the West <br />Pit monitoring wells on August 3 August tailings impoundment piezometer measurements identified <br />these installations were either dry or contained less than 12 inches of water as illustrated in Table 2. <br />Tables 1 and 2 below identify the depth to water measurements collected for each of the site monitoring <br />wells, piezometers and lysimeters as required by the terms and conditions of the TR-32 QA/QC plan. <br />The leak detection system was measured on August 31St. A total of 580 gallons of water was excavated <br />from the leak detection system yielding a monthly average of 17.57 gpad. The tailings pond under-drain <br />measured 26 gpm. <br />During August the West Pit water treatment plant operated efficiently discharging a total of 8,478,600 <br />gallons (26.02 acre-feet) of water to Rito Seco Creek and a total of 610,700 gallons ( 1.87 acre-feet) of <br />water was transferred from the water treatment plant to the tailings impoundment. Seepage along Rito <br />Seco Creek remained dry during the month. <br />P.O. Box 310 - San Luis, Colorado 81152-0310 - (719) 379-0798 - Fax (719) 379-0713