2008-02-13_HYDROLOGY - M1988112

• Permit No: M1988112
• IBM Index Class Name: HYDROLOGY
• Doc Date: 2/13/2008
• Doc Name: January 2008 Monthly Report
• From: Battle Mountain
• To: DRMS
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

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February 10, 2008
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
~ary 2008 Monthly Report
Dear Mr. Sorensen:
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The following summarizes monitoring and site activities at the Battle Mountain Resources Inc.
(BMRI), San Luis Project for the month of January 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 January 30's, 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 January 31St. January 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 tailing impoundment collection pond underdrain flow was pumped intermittently during the
month to minimize the collection pond level. The leak detection system was measured on January
30`s. The January tailings pond underdrain flow average was 41.81 gpm and a total of 780 gallons
of water was excavated from the leak detection system yielding a monthly average of 26 gpad.
During January the West Pit water treatment plant operated efficiently discharging a total of
8,387,400 gallons (25.74 acre-feet) of water to Rito Seco Creek and a total of 783,000 gallons
(2.40 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]