HYDRO23419

• Permit No: M1988112
• IBM Index Class Name: Hydrology
• Doc Date: 10/12/2004
• Doc Name: September 2004 Monthly Report
• From: Battle Mountain Resources Inc.
• To: DMG
• Media Type: D
• Archive: No

BATTLE MOUNTAIN RESOURCES, INC.
October 8, 2004
Mr. Tony Waldron
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-88-112
September 2004 Monthly Report
Dear Mr. Waldron:
RECEI V~p~
OCT~y~
Division of Minerals and Geology
The following summarizes monitoring and site activities at the $attle Mountain Resources Inc.
(BMRI), San Luis Project for the month of September 2004.
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 verified on September 24`h, no water was present for
sampling and subsequent analysis.
Depths to water were collected for the tailing impoundment main embankment piezometers on
September 29t°, and the West Pit and tailings embankment monitoring wells on September 30`h.
The September 29`h 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 29th. The September tailings pond underdrain flow avemge was 30.22 gpm and a total
of 530 gallons of water was excavated from the leak detection system yielding a monthly average
of 18.27 gpad.
During September, the West Pit water treatment plant operated efficiently discharging a total of
8,157,000 gallons (25.03 acre-feet) of water to Rito Seco Creek and a total of 461,400 gallons
(1.42 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. The monthly
precipitation accumulation for September was .41 inches, with the largest accumulation occurring
on September 19th (.33").
P.O. Box 310 San Luis, Colorado 81152-0310 [phone] Fax [phone]