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OCR for page 23
ATTACHMENT A
STATEMENT OF TASK
The program to destroy the United States stockpile of chemical weapons has
been operational for nearly two decades. During that time, the Army’s Chemical
Materials Agency (CMA) (and predecessor PMCD) have constructed 7 disposal
facilities. These facilities have destroyed all of the nerve agents GB and VX held
at the storage sites adjacent to each disposal facility and are now in the process
of, or continuing, the destruction of mustard agent stored in bulk containers or
munitions. Deseret Chemical Depot (DCD), in Utah, originally had the largest
repository of chemical agent stocks and munitions, approximately 44 percent of
the entire U.S. inventory.
DCD also was the site where four ton containers (~ 2 U.S. tons) of legacy nerve
agent GA from World War II came to be stored. Also stored at DCD from similar
legacy circumstances were 10 ton containers (~ 13 U.S. tons) of the blister agent
and lung irritant, lewisite, along with an additional 10 ton containers of possible
lewisite residues. The Tooele Chemical Agent Disposal Facility (TOCDF)
Systems Contractor (SC) has recently been tasked with disposal of these
materials. These materials lie outside the destruction schedule set for the TOCDF
at DCD, where the focus continues to be the destruction of the remaining much
larger quantities of mustard agent as it was for the large quantities of nerve
agents GB and VX that have already been destroyed.
Consequently, the TOCDF SC is developing an ancillary process to be co-located
at DCD by which to destroy the GA and lewisite. As of December 2008, this
process was at the 10 percent design stage. The National Research Council has
been requested to examine and comment on the issues surrounding this initiative.
The NRC will establish a committee to:
Examine the process design and procedural steps to be used for
treating GA and lewisite at the Deseret Chemical Depot;
Provide an assessment of the process design which includes a
new incinerator and associated pollution abatement system to be
tailored to the requirements for treating the GA and lewisite;
Provide an assessment of the process design to determine the
system's ability to reduce arsenic and mercury emissions to
within the Maximum Achievable Controls Technology (MACT)
new source regulatory limits;
Produce a report covering the topics listed above.
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