ENFORCE36834

• Permit No: M1988112
• IBM Index Class Name: Enforcement
• Doc Date: 5/21/1992
• Doc Name: BATTLE MOUNTAIN GOLD NOTICE OF PROBABLE VIOLATION ABATEMENT REQUIREMENTS
• Media Type: D
• Archive: No

Battle Mountain Gold
NOV Abatement Requirements
page 2
include a schedule for implementation. Following approval of his
technical revision, BMG shall implement the treatment method i~
accordance with the plan. Appropriate frequency and distribut on of
monitoring of the tailings and plant circuit shall be proposed within the
application and subsequently conducted to verify the progress nd success
of the remedial treatment. Monitoring results, covered by an ppropriate
cover letter report shall be submitted to the Division weekly wring the
detoxification program.
While BMG is continuing the CYTOX treatment, it will be permit ed to
continue operating the processing plant, including the introdu tion of
unprocessed ore, until the projected tailings quality has been achieved.
At that point in time BMG will cease operation of the plant pe ding
approval to recommence operation by the Division. Monitoring f cyanide
levels within the tailings slurry and liquid shall continue to verify the
anticipated decay of Free Cyanide levels following the cessati n of the
detoxification program, until cessation is approved by the Div Sion.
The introduction of chemical compounds into the processing cir wit to
affect an immediate remedy of the tailings cyanide problem cow d
potentially create additional problems by amending the chemica
constituency of the tailings. The Division cautions BMG that twill be
held responsible for any unanticipated results of its remedial actions.
Status: Partially Satisfied
- BMG submitted T.R. Application on April 3 1992.
- Division approved TR-004 on April 7, 1992 with
three stipulations. Stipulation Jf3, requ ring two
additional monitoring points, has been sa isfied.
MLRB Amendment: The Division shall report tailings treatment rogress
to the Board during their May 27-28 and June 24-25, 1992 meetings.
Tailings CYTOX detoxification approved under Technical R vision
TR-004 shall cease June 24, 1992.
Mav Progress: - BMG continued CYTOX treatment, in accordance with
TR-004 throughout the month of May.
- BMG submitted TR-005, to cease operation ~f the
A.V.R. unit, following failure of the air,sparging
fan unit on April 29, 1992. The Divisionlapproved
TR-005 on May 1, 1992.
- In partial response to Stipulation #1 on R-004, BMG
submitted plant and pond cyanide monitori g results
and technical discussion of the data to d monstrate
reduction in free Cyanide levels from 184 188 ppm
to 32-34 ppm in the ponds, as of May 11, 992, on
May 26, I99Z. The Division will complete review and
comment ASAP. Copies will provided to the Parties
for Comment.