HYDRO30266

• Permit No: M1988112
• IBM Index Class Name: Hydrology
• Doc Date: 10/12/2005
• Doc Name: September 2005 Monthly Report
• From: Battle Mountain Resources Inc.
• To: DMG
• Media Type: D
• Archive: No

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BATTLE MOUNTAIN RESOURCES, INC.
October 08, 2005 ~ y A v a ~ O q ~/
~Mr. Allen Sorensen •J!/
l6 State of Colorado
Division of Minerals and Geology
1313 Sherman Street, Room 215
Denver, CO 80203
Re: Battle Mountain Resources Inc. RECE~ v C~
San Luis Project
cMLRBPermitN M-gs-llz ~ OCT 1 2 2005
~/ rSeptember 2005 Monthly Report ~ Division of Minerela end Geolpgy
Dear Mr. Sorensen:
The following summarizes monitoring and site activities at the Battle Mountain Resources Inc.
(BMRI), San Luis Project for the month of September 2005.
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
(Q~QC) Plan.
Vacuum on the tailing lysimeters was veriFed on September 29'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 and tailings embankment monitoring wells were collected on September 28's.
September 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
September 28a'. The September tailings pond underdrain flow average was 36.82 gpm and a total
of 910 gallons of water was excavated from the leak detection system yielding a monthly average
of 26.76 gpad.
During September, the West Pit water treatment plant operated efficiently discharging a total of
8,459,400 gallons (25.96 acre-feet) of water to Rito Seco Creek and a total of 606,600 gallons
(1.86 acre-feet) of water was transfen•ed from the water treatment plant to the tailings
impoundment. Seepage along Rito Seco Creek remained dry during the month. The monthly
precipitation accumulation for September was 1.18" inches, with the largest accumulation
occurring on September, 22"d (0.42").

P.O. Box 310 • San Luis, Colorado 81152-0310 [phone] Fax [phone]