Appendix M: Installation Narrative Summaries - denix

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Defense Distribution Depot (DDD) San Joaquin, Tracy Facility
stores and distributes supplies and equipment for DoD. EPA
placed DDD San Joaquin, Tracy Facility on the NPL in August
1990 and the installation signed a federal facility agreement
(FFA) in 1991. Sites at this installation include burn and
disposal pits, underground storage tanks (USTs), hazardous
waste storage sites, and other areas of contamination.
Contamination has been identified in on-site soil and off-site
groundwater. The installation completed a 5-year review in
FY05.
To date, response complete has been achieved at 61 of the 73
identified sites at this installation. Two Records of Decisions
(RODs) have been signed, one for the treatment of
groundwater contamination and one sitewide comprehensive
ROD. The cleanup progress at DDD San Joaquin, Tracy
Facility for FY02 through FY05 is detailed below.
In FY02, operation and optimization of the Operable Unit (OU)
1 groundwater treatment systems continued. The draft former
UST sites preferred alternative report was submitted,
recommending no further action (NFA) or monitored natural
attenuation (MNA) for remaining open sites. The operation of
the soil vapor extraction (SVE) system continued. Small
excavation Sites 6, 20, and 27 were completed. The wet
season controls Site 4 remedial action (RA) report was
completed. The draft Site 67 northern depot area cover
installation RA report was submitted. The Phase II remedial
process optimization evaluation was completed.
In FY03, the installation completed a former UST sites
preferred alternative report and recommended 12 sites for NFA
and 1 site for MNA. RAs for Site 8 and SVE sites were
completed. The installation completed an RA report for Site 27
and converted treatment plant (TP) 1 to granular activated
carbon. The installation implemented pesticide treatment for TP
1. Operation and optimization of the OU 1 groundwater
treatment systems continued.
In FY04, DDD San Joaquin, Tracy Facility completed the
sitewide ROD amendment and the sitewide ROD explanation of
significant differences for various sites. The installation also
completed three RA reports: one for Solid Waste Management
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Unit (SWMU) 8; one for SWMUs 4, 6, and 20; and one for
Defense Site Environmental Tracking System 67. The facility
also continued operations and maintenance (O&M), monitoring,
and optimization of groundwater treatment systems.
In FY05, installation completed the 5-year review, which
included an outline of the draft Response Completion and
Resource Management Plan (exit strategy). The installation
continued O&M, monitoring, and optimization of groundwater
treatment systems. Additionally, the installation continued
trichloroethylene (TCE)/pertetrachloroethylene (PCE) SVE and
total petroleum hydrocarbons bioventing sites RA.
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DDD San Joaquin, Tracy Facility completed the draft sitewide
Preliminary Closeout Report (PCOR) and the draft Response
Completion and Resource Management Plan. The installation
shut down the pesticide treatment plant portion of the
groundwater treatment System. The installation continued
O&M, monitoring, and optimization of groundwater treatment
systems and groundwater well monitoring network.
The installation initiated the update of the community relations
plan (CRP). DDD San Joaquin, Tracy continued operation of
the TCE PCE SVE system RA due to containment re-bound,
delaying the completion of the RA report. The installation
completed the TPH bioventing and will be reported in the same
RA as SVE. DDD San Joaquin, Tracy also submitted the draft
response plan (formerly known as the exit strategy) to the
regulatory agencies with a schedule for a draft final and final
plan.
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DLA has identified no Military Munitions Response Program
(MMRP) sites at this installation.
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Plan of action items for Defense Distribution Depot San
Joaquin, Tracy Facility are grouped below according to program
category.
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0 Complete the update of the CRP in FY07.
0 Complete the sitewide PCOR in FY07.
0 Continue groundwater treatment system and
monitoring well network O&M, monitoring, and
optimization in FY07.
0 Complete and implement the Response
Completion and Resource Management Plan
including alternative technology studies,
feasibilty study, and risk assessment, and OU
1 ROD in FY07-FY08.
0 Complete the OU 2 TCE/PCE SVE system RA and
RA report, OU 2 ROD amendment, and potential
OU 2 delisting in FY07-FY08.
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There are no MMRP actions scheduled for FY07 or
FY08.
M-47