2011-06-15_HYDROLOGY - M1988112

• Permit No: M1988112
• IBM Index Class Name: HYDROLOGY
• Doc Date: 6/15/2011
• Doc Name: May 2011 monthly report
• From: Battle Mountain Resources, Inc.
• To: DRMS
• Email Name: WHE
• Media Type: D
• Archive: No

r:
ATTLE MOUNTAIN RESOURCES, INC. c?
RECEIVED
June 09, 2011
Mr. Allen Sorensen
State of Colorado
'r t7 : Division of Reclamation, Mining and Safety
1313 Sherman Street, Room 215
Denver, CO 80203
Re: Battle Mountain Resources Inc.
San Luis Project
CMLRB Permit No. M-88-112 t.-I
May 2011 Monthly Report ?-
----------------- -
Dear Mr. Sorensen:

JUN 15 2011
0113160pgof Reclam o n,
1MP Safety
The following summarizes monitoring and site activities at the Battle Mountain Resources Inc. (BMRI),
San Luis Project for the month of May, 2011.
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 31st, 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 31St. May tailings 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 leak detection system was measured on May 31St. A total of 870 gallons of water was excavated from
the leak detection system yielding a monthly average of 28.06 gpad. The tailings pond under-drain
measured 29 gpm.
During May the West Pit water treatment plant operated efficiently discharging a total of 744,332 gallons
(2.28 acre-feet) of water to Rito Seco Creek and a total of 8,164,800 gallons (25.06 acre-feet) of water
was transferred from the West Pit backfill to the tailings impoundment. Seepage along Rito Seco Creek
remained dry during the month.
P.O. Box 310 • San Luis, Colorado 81152-0310 • [phone] 9 Fax[phone]