HYDRO23701

• Permit No: M1988112
• IBM Index Class Name: Hydrology
• Doc Date: 6/11/2007
• Doc Name: May 2007 Monthly Report
• From: Battle Mountain Resources, Inc.
• To: DRMS
• Media Type: D
• Archive: No

BATTLE MOUNTAIN RESOURCES, INC. ~ ~~P
June 08, 2007
Mr. Allen Sorensen
State of Colorado
Division of Minerals and Geology
1313 Sherman Street, Room 215
Denver, CO 80203
RECEIVED
~N 1 Y 2007
Re: Battle Mountain Resources Inc. /
San Luis Project /
CMLRB Permit No. M-88-112
~tay 2007 Monthly Report
Dear Mr. Sorensen:
Division of Reclamation,
Mining and/Safety
Y
The following summazizes monitoring and site activities at the Battle Mountain Resources Inc.
(BMRI), San Luis Project for the month of May 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 May 30th, 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 May 30'h. May 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 Teak detection system was measured on May
30'h. The May tailings pond underdrain flow average was 48.11 gpm and a total of 800 gallons of
water was excavated from the leak detection system yielding a monthly average of 25.81 gpad.
During May the West Pit water treatment plant operated efficiently discharging a total of
10,431,900 gallons (32.02 acre-feet) of water to Rito Seco Creek and a total of 720,500 gallons
(2.21 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]