1990-01-09_REVISION - M1988112 ‎(6)‎

• Permit No: M1988112
• IBM Index Class Name: Revision
• Doc Date: 1/9/1990
• Doc Name: FAX COVER
• From: STEFFEN ROBERTSON & KIRSTEN
• To: MLRD
• Type & Sequence: AM1
• Media Type: D
• Archive: No

90 01-'0 `.+ 1914

BATTLE MOUNTAIN RESOURCES, SAN
CMLRD ADEQUACY LETTER RESPONSES
Page 2 of 28
3 303 535 994? SFY• GENVEk
i
LU15 PROJECT
The emergency response plan identified 6,500 gallons of sulfuric acid
as being located on site. At expected production levels, what is the
daily requirement or consumption of sulfuric acid? W111 sulfuric acid
be used as a detoxifying reagent in an emergency spill situation?
RESPONSE: The sulfuric acid consumption levels
ton of ore processed. This consumption
1n ore type. At the expected rate of
tailings production, this would be 2.8
16, the sulfuric acid will be used in
slurry prior to tailings disposal. The
as a detoxifying agent in an emergency
to question 4).
are estimated at 1.2 lbs per
will vary with tha variations
4,680 tons per eay (TPD) of
7PD. As mentione~i on page D-
the treatment of `he tailings
sulfuric acid will not be used
spill situation (¢ee response
Hydrogen peroxide and alkaline chlorination ere referenced for use
1n the emergency response plan for cyanide detoxification. What
reagent will be used far alkaifne chlorination? With reference to
Table 4.1 in the emergency response plan (Exhibit M), N+hat volumes
of reagents will be available for detoxification purposes? What
corresponding volumes of spil)s will be detoxified by the amounts
of reagents stored on site?
:'~•'"`Sf: The reagent used for alkali„e chlorination will be calcium
hypochlorite. The volume of calcium. hypochlorlte stored onsite is
expected to be 2,000 lbs (1 ton). This quantity should be sufficient
to detoxify any spill that could possibly occur and, as discussed
in the response to question 5, any spill would be completely
contained within the facility. The volume of spill to bE• detoxified
will vary depending on the point 1n the process wher~a the spill
~r-~lrs and the characteristics of the ore under leach.
_:~ provide the mill facility design criteria to demonstrate that
solution or chemical spill would not discharge from ilia facility.
'uor construction, Internal curbing, solution collectioi and backup
~jstem design specifications should be submitted.
;;5.-r Attachment 2 is included to provide preliminary design criteria for
the mill facility internal curbing, Final designs will ke submitted
prior to construction.
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