Appendix M: Installation Narrative Summaries - denix

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The mission at Eielson Air Force Base (AFB) is to provide
tactical air support to Pacific Air Forces. EPA placed the
installation on the NPL in November 1989 and the Air Force
signed an interagency agreement (IAG) in May 1991.
Environmental studies at Eielson AFB began in FY82. Sites
include fire training areas, landfills, spill sites, aboveground
storage tanks, underground storage tanks, and disposal pits.
Primary contaminants affecting groundwater and soil are
petroleum/oil/lubricants (POLs), benzene, and chlorinated
solvents. Additional contaminants include heavy metals, volatile
organic compounds (VOCs), and polychlorinated biphenyls
(PCBs). In FY95, the installation converted its technical review
committee to a Restoration Advisory Board (RAB). Five-year
reviews were completed in FY98 and FY03.
Since FY93, the installation has identified 65 sites. Thirty-one of
the sites were grouped into 6 operable units (OUs); 24 sites
were investigated and determined to require no further action
(NFA). To date, all Records of Decision (RODs) for the
Installation Restoration Program (IRP) have been signed, and
amendments have been signed for the OU 2, OU 3, OU 4, and
OU 5 RODs. In FY06, Eielson AFB removed Site SS 68 from
the IRP. The cleanup progress at Eielson AFB for FY02 through
FY05 is detailed below.
In FY02, the installation continued annual long-term operations
(LTO)/ long-term management (LTM) at the active sites.
Agenda preparations for the 5-year review were initiated as
planned. The Phase II remedial process optimization (RPO)
process was completed. Institutional controls at IRP sites were
enforced during all base construction activities. Biannual RAB
meetings were held.
In FY03, the installation completed the formal decommission of
the bioventing systems at Site ST 20, E 7 complex, and Site ST
48. The 5-year review was also completed. The installation
prepared the proposed closure documents for all sites sampled
in the FY02 sitewide sampling and analysis program. Closure
documentation was incorporated into the ROD review report.
The installation continued annual LTO/LTM at the active sites.
Bioventing systems were removed at Site ST 20, E 7 complex,
and Site ST 48.
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In FY04, Eielson AFB received funding for the proposed
event-driven monitoring (EDM) concept for the long-term
monitoring program. A removal action and site evaluation were
completed at Site SS 35. Eielson AFB received regulatory
concurrence that the remaining buried drums at the site do not
constitute a changing site condition and do not alter the
conclusions drafted in the ROD. The installation remediated the
emulsion seepage. NFA is required for the remainder of the
buried drums. Removal of the OU 1 bioventing system at Sites
ST 20 and E 9 was completed. LTO savings from the three
decommissioned OU 1 bioventing systems were used to repair
and upgrade the OU 2 bioventing system at Site ST 10/SS 14.
The RAB held biannual meetings.
In FY05, Eielson AFB continued to make progress with the
EDM initiative. The installation completed OU 2 bioventing
system repair and upgrade for Sites ST 13/DP 26. Remedial
action operation (RA-O) activities at the OU 2 bioventing
systems at Sites ST 10/SS 14 and ST 13/DP 26 continued. The
installation completed the sitewide sampling and analysis of
monitoring wells. The current measures at Garrison Slough
remain protective and progress toward the targeted risk range
continued. Fish removal action from the slough continued. The
Air Force updated its Military Munitions Response Program
(MMRP) inventory. No MMRP sites were identified at this
installation during the inventory development. The RAB
co-chairs suspended regularly scheduled meeting periods and
will meet on an as-need basis only. A yearly fact sheet
publication will convey IRP information to the surrounding
communities.
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Eielson AFB employed the EDM initiative for in situ monitoring
and implemented the RPO effort. The installation continued
RA-O activities at the OU 2 bioventing systems at Sites ST
13/DP 26 and ST 10/SS 14.
The installation awarded a munitions sweep contract for
Garrison Slough; however, the sweep action was postponed
due to administrative issues. The Air Force removed Site SS 68
from the IRP due to regulatory issues and, as such, did not
develop a proposed work plan or decision document for the
site. Future activities will be addressed through the compliance
program following State of Alaska cleanup standards for
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Regulation 18 AAC 78. The installation postponed the fish
removal initiative because of prior fish removal success at
Garrison Slough.
The Eielson AFB RAB merged with the U.S. Army Corps of
Engineers (USACE) FUDS program for the Eielson Farm Road
AAA site. The combined RAB met to discuss the USACE's
proposed plan for remediation efforts at the site.
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The Air Force has identified no MMRP sites at this installation.
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Plan of action items for Eielson Air Force Base are grouped
below according to program category.
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0 Continue RA-O for OU 2 bioventing systems at
Sites ST 13/DP 26 and ST 10/SS 14 in FY07.
0 Evaluate data collected at Sites WP 45/SS 57
to determine applicability of a future carbon
donor project for enhanced trichloroethylene
(TCE) remediation in FY07.
0 Collect groundwater data from selected IRP
sites in preparation for the 5-year review in
FY07.
0 Continue the fish removal initiative at
Garrison Slough in FY07.
0 Conduct the munitions sweep of Garrison
Slough in FY07.
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There are no MMRP actions scheduled for FY07 or
FY08.
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