2007-12-12_HYDROLOGY - M1988112

• Permit No: M1988112
• IBM Index Class Name: HYDROLOGY
• Doc Date: 12/12/2007
• Doc Name: November 2007 Monthly Report
• From: Battle Mountain Resources, Inc.
• To: DRMS
• Permit Index Doc Type: Stability Report
• Media Type: D
• Archive: No

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BATTLE MOUNTAIN RESOURCES, INC. „~ ~~
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December 07, 2007
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-88-1~~-/
November 2007 Monthly~epo~_~~,/
Dear Mr. Sorensen:
RECEIVED
DEC 1 2 2007 ~"~
G Division of Reclamation,
Mining and Safety ~/
The following summarizes monitoring and site activities at the Battle Mountain Resources Inc.
(BMRI), San Luis Project for the month of November 2007.
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 November 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 November 28~'. November 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
November 28~'. The November tailings pond underdrain flow average was 41.29 gpm and a total
of 660 gallons of water was excavated from the leak detection system yielding a monthly average
of 22 gpad.
During November the West Pit water treatment plant operated efficiently discharging a total of
7,708,200 gallons (23.66 acre-feet) of water to Rito Seco Creek and a total of 491,500 gallons
(1.51 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]