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4- <br />BATTLE MOUNTAIN RESOURCES, INC. <br />October 06, 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 />,,?ptember 2010 Monthly Report <br />Dear Mr. Sorensen: <br />vUv? ? 22n`i9 <br />? ?oc?a?aUOn' <br />Xv2_ <br />The following summarizes monitoring and site activities at the Battle Mountain Resources Inc. (BMRI), <br />San Luis Project for the month of September, 2010. <br />Surface and ground water monitoring and analysis 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 September 29th, 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 September 30. September tailings impoundment piezometer measurements <br />identified these installations were either dry or contained less than 12 inches of water as illustrated in <br />Table 2. Tables 1 and 2 below identify the depth to water measurements collected for each of the site <br />monitoring wells, piezometers and lysimeters as required by the terms and conditions of the TR-32 <br />QA/QC plan. <br />The leak detection system was measured on September 30`". A total of 680 gallons of water was <br />excavated from the leak detection system yielding a monthly average of 26.67 gpad. The tailings pond <br />under-drain measured 24 gpm. <br />During September the West Pit water treatment plant operated efficiently discharging a total of 8,857,300 <br />gallons (27.18 acre-feet) of water to Rito Seco Creek and a total of 1,129,000 gallons ( 3.47 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