Appendix M: Installation Narrative Summaries - denix

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Since World War II, Fort Wainwright has housed light infantry
brigades, most recently the 172nd Stryker Brigade Combat
Team and the 1-501st Airborne Battalion. Studies at the
installation identified drum burial sites, underground storage
tanks, a railroad car off-loading facility, an open burning and
open detonation area, a former ordnance disposal site, solvent
groundwater plumes, petroleum/oil/lubricant (POL) plumes, and
pesticide-contaminated soil. EPA placed Fort Wainwright on the
NPL in 1990. The Army and EPA signed a federal facility
agreement (FFA) in 1991. In FY97, Fort Wainwright convened a
Restoration Advisory Board (RAB), which adjourned in FY04,
because the entire installation achieved construction complete
in FY02. The Army completed 5-year reviews in FY01 and
FY06.
Of the 51 eligible CERCLA sites identified in the FFA, 19 sites
required no further action and 32 sites were placed into 5
operable units (OUs). Since 1991, 13 sites have closed and 2
new sites have been added, for a total of 21 active sites.To
date, the installation has signed five Records of Decision
(RODs). The cleanup progress at Fort Wainwright for FY02
through FY05 is detailed below.
In FY02, the Army completed the interim remedial action report
for OU 3, and EPA signed the preliminary closeout report for
Fort Wainwright. The installation, Army, and EPA signed the
OU 3 explanation of significant differences. All OUs have
operations and maintenance (O&M) plans in place with a format
for an exit strategy. The Army expanded the land use control
and institutional control boundaries to meet the requirements in
the RODs and restated them in the 5-year review. The
installation began operating and optimizing product recovery at
Birch Hill; groundwater modeling was used to identify locations
where off-post contamination occurred. The installation
completed cleanup operations and site exit strategies
(CLOSES) at one site. The Army completed an inventory of
closed, transferred, and transferring ranges and sites with
unexploded ordnance, discarded military munitions, or
munitions constituents. The inventory identified nine Military
Munitions Response Program (MMRP) sites; six were closed
and three were transferred from the Installation Restoration
Program (IRP).
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In FY03, the installation evaluated the OU 3 product recovery
system. The Army completed CLOSES evaluations at two sites
and initiated the same for additional sites. The installation
continued to evaluate each site's operation, maintenance and
monitoring, and long-term monitoring plans. The Army
continued evaluation of the Building 1168 (OU 2) Defense
Reutilization and Marketing Office remediation systems. The
installation reduced monitoring efforts at the Coal Storage Yard
(OU 4) and OU 5 in accordance with CLOSES evaluations.
In FY04, the installation completed CLOSES at six additional
sites. The Army achieved site closeout at the Coal Storage
Yard site. The installation implemented reductions in O&M,
specifically monitoring requirements, on various sites, in large
part due to the completed CLOSES evaluations. The
installation reviewed the MMRP sites during the annual
Installation Action Plan (IAP) Workshop and included them in
the final FY04 IAP. The RAB adjourned at the recommendation
of the community co-chair and community RAB members.
In FY05, the installation continued using the CLOSES
evaluations to reduce O&M requirements. The Army discovered
the Communications Site, contaminated with polychlorinated
biphenyls (PCBs), during a housing construction project. The
installation conducted the initial stages of a preliminary site
evaluation and removed some PCB-contaminated soils. The
installation conducted additional sampling at the Birch Hill Tank
Farm aboveground storage tank (AST) site to determine if the
site requires additional action. The installation continued
evaluation of MMRP sites during development of IAPs.
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Fort Wainwright determined additional actions (removal,
disposal, sampling) are required at the Birch Hill Tank Farm
AST site. The Army completed the 5-year review and site
closeout of additional POL sites. The installation continued
using the CLOSES evaluation to reduce O&M requirements.
Fort Wainwright conducted sampling of the former Building
1168 in OU2; however, contamination levels determined the
Army could not close out the site.
The installation continued to solicit community interest to
warrant RAB reactivation.
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Technical issues delayed the installationwide site inspections.
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Plan of action items for Fort Wainwright are grouped below
according to program category.
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0 Solicit interest for RAB reactivation in
FY07.
0 Complete actions required by the 5-year
review findings in FY07.
0 Evaluate Birch Hill summary report in FY07.
0 Continue using the CLOSES evaluations to
reduce O&M requirements in FY07-FY08.
0 Determine remedial investigation/feasibility
study requirements at PCB-contaminated site
(Communication Site) in FY07-FY08.
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0 Conduct site inspections in FY07.
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