2008-05-12_HYDROLOGY - M1988112

• Permit No: M1988112
• IBM Index Class Name: HYDROLOGY
• Doc Date: 5/12/2008
• Doc Name: April 2008 Monthly report
• From: Battle Mountain Resources, Inc.
• To: DRMS
• Email Name: ACS
• Media Type: D
• Archive: No

BATTLE MOUNTAIN RESOURCES, INC. ~~
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May 08, 2008
Mr. Allen Sorensen
State of Colorado
Division of Minerals and Geology
1313 Sherman Street, Room 215
Denver, CO 80203
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MAY 12 2008
Division of keclamation,
Mining and Safety
Re: Battle Mountain Resources lnc.
San Luis Project
CMLRB Permit No. M-88-112
April 2008 Monthly Report ~
Dear Mr. Sorensen:
The following summarizes monitoring and site activities at the Battle Mountain Resowces Inc.
(BMRI), San Luis Project for the month of March 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 April 30~', 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 April 30'x. April 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 measwements 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 measwed on April 30`x. A total of 950 gallons of water was
excavated from the leak detection system yielding a monthly average of 31.66 gpad. The tailings
pond under-drain measured 42 gpm.
During April the West Pit water treatment plant operated efficiently discharging a total of
9,553,600 gallons (29.32 acre-feet) of water to Rito Seco Creek and a total of 811,200 gallons
(2.49 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]