2009-08-13_HYDROLOGY - M1988112 - Laserfiche WebLink

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1? BATTLE MOUNTAIN RESOURCES, INC. August 10, 2009 Mr. Allen Sorensen State of Colorado Division of Minerals and Geology 1313 Sherman Street, Room 215 Denver, CO 80203 Re: Battle Mountain Resources Inc. San Luis Project CMLRB Permit No. M-88-112 k ly 2009 Monthly Report Dear Mr. Sorensen: RECEIVED klAA'UG 1 7009 Divisi n cr The following summarizes monitoring and site activities at the Battle Mountain Resources Inc. (BMRI), San Luis Project for the month of July 2009. Surface and ground water monitoring and analysis were completed for all required sites during the month per the terms and conditions of the TR-32 Quality Assurance and Quality Control (QA/QC) Plan. Vacuum on the tailing lysimeters was verified on July 31', no water was present for sampling and subsequent analysis. Depths to water were collected for the tailing impoundment main embankment piezometers and the West Pit monitoring wells on July 31'. July tailing impoundment piezometer measurements identified these installations were either dry or contained less than 12 inches of water as illustrated in Table 2. Tables 1 and 2 below identify the depth to water measurements collected for each of the site monitoring wells, piezometers and lysimeters as required by the terms and conditions of the TR 32 QA/QC plan. The leak detection system was measured on July 30`x. A total of 540 gallons of water was excavated from the leak detection system yielding a monthly average of 18 gpad. The tailings pond under-drain measured 27 gpm. During July the West Pit water treatment plant operated efficiently discharging a total of 7,885,200 gallons (24.20 acre-feet) of water to Rito Seco Creek and a total of 1,704,000 galkws (5.23 acne-feet) of water was transferred from the water treatment plant to the tailings impoundment. Seepage along Rito Seco Creek remained dry during the month. /W- P.O. Box 310 • San Luis, Colorado 81152-0310 • (719) 379-0798 • Fax (719) 379-0713