LAWRENCE LIVERMORE NATIONAL LABORATORY:
LIVERMORE SITE CHARACTERISTICS
Remediation Strategy
The Livermore Site is subdivided into nine Treatment Facility (TF) areas.
The remediation strategy employs a prioritized approach with
an emphasis on risk reduction. LLNL, in agreement with the
regulatory agencies and the neighboring community,
established the following priorities for the Livermore Site
cleanup:
- Western plume capture.
- Southern plume capture.
- Internal source control and/or mass removal.
Treatment Technology
All areas primarily contain VOC contamination in the
ground water, although the TFC and TF5475 areas also have
tritium in the ground water. The remediation strategy
consists of ground water extraction and treatment using
Portable Treatment Units (PTUs) that use an air stripper to
remove VOCs; a smaller skid-mounted version called a
Miniature PTU (MTU); a skid-mounted unit using granular
activated carbon to remove VOCs (GTU); and a Solar-powered
granular activated-carbon Treatment Unit (STU).
Depending on the flow rate and concentration of VOCs, the
least costly unit is deployed to meet the milestones for
facility buildout. As PTUs show decrease in contaminant
mass removal efficiency, some of the PTUs may be relocated
to meet future milestones at other locations, and less
expensive units can be constructed to replace the relocated
PTUs.
Ground water containing both VOCs and tritium is extracted
and treated with a Catalytic Reductive Dehalogenation (CRD)
unit. Vapor is extracted and treated with a vapor
extraction system.
Next: Remedial Actions Implemented to Date
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