HYDRO20808

• Permit No: M1988112
• IBM Index Class Name: Hydrology
• Doc Date: 1/11/2007
• Doc Name: December 2006 Monthly Report
• From: Battle Mountain Resources, Inc.
• To: DRMS
• Permit Index Doc Type: Correspondence
• Media Type: D
• Archive: No

January 09, 2007
Mr. Allen Sorensen
State of Colorado
Division of Minerals and Geology
1313 Shennan Street, Room 215
Denver, CO 80203
Re: Battle Mountain Resources Inc.
San Luis Project ,,
CMLRB Permit No, M-88-112
~cember 2006 Monthly Report
Dear Mr. Sorensen:
/JAN 112001
~I~Mlnlnpta d Sefety n
The following summarizes monitoring and site activities at the Battle Mountain Resources Inc.
(BMRI), San Luis Project for the month of December 2006.
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 December 27`", no water was present for
sampling and subsequent analysis.
Depths to water were collected for the tailing impoundment main embankment piezometers and
the West Pif and tailings embankment monitoring wells on December 27w. December 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 underdtain flow was pumped intermittently during the
month to minimize the collection pond level. The leak detection system was measured on
December 2T". The December tailings pond underdrain flow average was 33.53 gpm and a total
of 950 gallons of water was excavated from the leak detection system yielding a monthly average
of 32.75 gpad.
During December the West Pit water treatment plant operated efficiently discharging a total of
7,222,900 gallons (22.17 acre-feet) of water to Rito Seco Creek and a total of 427,100 gallons
(1.31 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 8 1 1 52-03 1 0 [phone] Pax [phone]