2008-10-09_HYDROLOGY - M1988112

• Permit No: M1988112
• IBM Index Class Name: HYDROLOGY
• Doc Date: 10/9/2008
• Doc Name: September 2008 monthly report
• From: Battle Mountain Resources, Inc.
• To: DRMS
• Email Name: SSS
• Media Type: D
• Archive: No

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October 07, 2008
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Mr. Allen Sorensen
State of Colorado ~~~' ~
Division of Minerals and Geology ~,,~,~ , ~~ 1
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1313 Sherman Street, Room 215 lf`.:,~ -
Denver, CO 80203 ~ ~. .:
Re: Battle Mountain Resources Inc.
San. Luis Project /
CMLRB Permit No. M-88-112
/September 2008 Monthly Report
Dear Mr. Sorensen:
The following summarizes monitoring and site activities at the Battle Mountain Resources Inc.
(BMRI), San Luis Project for the month of September 2008.
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 September 29~', 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 September 28~'. September 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.
T'he leak detection system was measured on September 30`x. A total of 610 gallons of water was
excavated from the leak detection system yielding a monthly average of 20.33 gpad. The tailings
pond under-drain measured 35 gpm.
During September the West Pit water treatment plant operated efficiently discharging a total of
8,237,200 gallons (25.28 acre-feet) of water to Rito Seco Creek and a total of 538,800 gallons
(1.65 acre-feet) of water was transferred from the water treatment plant to the tailings
impoundment. Seepage along Rito Seco Creek remained dry during the month.

P.O. Box 310 San Luis, Colorado 81152-0310 [phone] Fax [phone]