Appendix M: Installation Narrative Summaries - denix

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Since 1942, Dover Air Force Base (AFB) has provided airlift
support for troops, cargo, and equipment. EPA placed the
installation on the NPL in March 1989 and the Air Force signed
a federal facility agreement (FFA) in August 1989. In 2005, the
BRAC Commission recommended Dover AFB for realignment.
Former waste management practices contaminated the shallow
groundwater aquifer with petroleum products and volatile
organic compounds (VOCs). Site types include solvent spills,
fire training areas, landfills, fuel spills and leaks. The installation
completed 5-year reviews for five remedies in FY03.
Fifty-nine restoration sites have been identified at this
installation; 14 under the State RCRA petroleum program and
45 under CERCLA. As of the end of FY06, all of the sites either
are response complete (RC) or have final remedies in place
(RIP). The cleanup progress at Dover AFB for FY02 through
FY05 is detailed below.
In FY02, the installation completed construction of a trench
collection system for fuel recovery. The installation also
completed a final soil removal action at a pesticide source area,
removing and incinerating 300 tons of soil. Five-year reviews
were initiated for four natural attenuation (NA) sites and a soil
removal site.
In FY03, the installation completed a focused feasibility study
(FS) for land use control (LUC) implementation at 21 sites.
Five-year reviews for five remedies were completed. The
installation continued operations of three fuel recovery systems
and an accelerated anaerobic bioremediation system. The
installation also continued monitoring at one petroleum NA site
and five chlorinated solvent NA sites. An innovative
bioremediation technology demonstration project was
expanded due to its initial success at remediating
trichloroethylene (TCE). A new innovative technology
demonstration project, biogeochemical reductive
dehalogenation, was initiated. The installation held monthly Tier
I meetings and quarterly Tier II meetings with federal and state
regulators to discuss progress and resolve issues.
In FY04, the installation completed regulatory reviews and final
changes to the FSs for all remaining sites, and received state
concurrence. Four proposed remedial action plans (PRAPs)
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were drafted. The installation continued operation of three fuel
recovery systems, operation of an accelerated anaerobic
bioremediation system, and monitoring of groundwater plumes.
A work plan was drafted for a biogeochemical mulch barrier to
treat chlorinated solvents in groundwater. A Record of Decision
(ROD) for LUCs at multiple sites sites was drafted.
In FY05, Dover AFB drafted remedial action work plans for the
South Management Unit and the Area 6 plume, including a total
of 11 sites. Two additional PRAPs were drafted for groundwater
actions at the remaining CERCLA sites. In addition, four RODs,
covering groundwater actions at 11 sites and LUCs at 22 sites,
were drafted. Four petroleum sites achieved RC based on no
further action determinations received from the State. Dover
AFB finalized FSs for all remaining sites. The installation
constructed a biogeochemical mulch barrier to treat chlorinated
solvents in groundwater as an innovative technology
development project. Operation of three fuel recovery systems
and an accelerated anaerobic bioremediation system
continued, as did monitoring of groundwater plumes. The
installation accepted public comments and held a public
meeting for four PRAPs. Dover AFB developed an acceleration
initiative with the goal of achieving RIP for all sites by the end of
FY06. The Air Force updated its Military Munitions Response
Program (MMRP) inventory. No MMRP sites were identified at
this installation during the inventory development.
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Dover AFB signed six final RODs for all remaining cleanup
actions at 39 sites and completed four remedial action (RA)
work plans for cleanup of five groundwater plumes. Additionally,
the installation constructed or implemented final groundwater
remedies at 17 sites and completed RA-construction
completion reports for final remedies at all CERCLA sites. The
Air Force also implemented LUCs at all required sites. As a
result of the Dover AFB acceleration initiative, all Dover AFB
sites met the RIP milestone and 34 sites were RC. The cost of
completing environmental restoration has changed significantly
due to changes in estimating criteria.
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The Air Force has identified no MMRP sites at this installation.
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Plan of action items for Dover Air Force Base are grouped
below according to program category.
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0 Initiate 5-year reviews for all remedies in
FY07.
0 Continue operations, maintenance, monitoring,
and reporting of groundwater cleanup remedies
at 25 sites in FY07.
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There are no MMRP actions scheduled for FY07 or
FY08.
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