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l BATTLE MOUNTAIN RESOURCES, INC. <br />April 09, 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 />vl0tarch 2010 Monthly Report <br />Dear Mr. Sorensen: <br /> <br />APR 12 2010 <br />Division cY Rccl lk, <br />The following summarizes monitoring and site activities at the Battle Mountain Resources Inc. <br />(BMRI), San Luis Project for the month of March 2010. <br />Surface and ground water monitoring and analysis were completed for all required sites during <br />the month per the terms and conditions of the TR-32 Quality Assurance and Quality Control <br />(QA/QC) plan. <br />Vacuum on the tailing lysimeters was verified on March 31'. no water was present for sampling <br />and subsequent analysis. <br />Depths to water were collected for the tailing impoundment main embankment piezometers and <br />the West Pit monitoring wells on March 31". March tailing impoundment piezometer <br />measurements identified these installations were either dry or contained less than 12 inches of <br />water as illustrated in Table 2. Tables 1 and 2 below identify the depth to water measurements <br />collected for each of the site monitoring wells, piezometers and lysimeters as required by the <br />terms and conditions of the TR-32 QA/QC plan. <br />The leak detection system was measured on March 31'. A total of 630 gallons of water was <br />excavated from the leak detection system yielding a monthly average of 19.09 gpad. The tailings <br />pond under-drain measured 22 gpm. <br />During March the West Pit water treatment plant operated efficiently discharging a total of <br />7,933,600 gallons (24.35 acre-feet) of water to Rito Seco Creek and a total of 881,400 gallons <br />(2.71 acre-feet) of water was transferred from the water treatment plant to the tailings <br />impoundment. Seepage along Rito Seco Creek remained dry during the month. <br />P.O. Box 310 • San Luis, Colorado 81152-0310 • (719) 379-0798 • Fax (719) 379-0713