Appendix M: Installation Narrative Summaries - denix

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The mission of Wurtsmith Air Force Base (AFB) was to conduct
tactical fighter and bomber training. In July 1991, the BRAC
Commission recommended closure of Wurtsmith AFB. The
installation closed in June 1993, and EPA proposed it for the
NPL in January 1994. Sites at the installation include a waste
solvent underground storage tank (UST), bulk storage areas for
petroleum/oil/lubricants (POLs), aboveground storage tanks,
fire training areas, landfills, and an aircraft crash site. Volatile
organic compounds (VOCs) at the installation include
trichloroethylene (TCE), dichloroethene, vinyl chloride,
benzene, toluene, ethyl benzene, and xylenes, all of which
primarily affect groundwater. A Restoration Advisory Board
(RAB) was established in FY94. To address cleanup efforts, a
BRAC cleanup plan was developed. In FY04, the installation
completed a 5-year review.
The cleanup progress at Wurtsmith AFB for FY02 through FY05
is detailed below.
In FY02, the installation completed a basewide remedial action
(RA) plan (RAP) and submitted it for regulatory review.
Fieldwork for the supplemental remedial investigation (SRI) was
completed and the draft SRI report was planned. Initial results
from the field indicated no changes to the RAPs for Site WP
004 and Landfill (LF) 023 were necessary. The results for Point
of Interest 20 led to the characterization of a small, chlorinated
groundwater plume and the designation of Installation
Restoration Program (IRP) Spill Site (SS) 071. The remedial
design (RD) was completed for SS 057 and the RA construction
contract was awarded. Sampling and analysis costs for the
operation and maintenance of the benzene treatment system
were reduced by 75 percent due to the reduced frequency of
National Pollutant Discharge Elimination System monitoring
from weekly to monthly. Additional savings were captured
through the sale and recycling of free product (JP 4), which was
removed from the groundwater at SS 006.
In FY03, the installation completed SRIs at several sites to
verify the adequacy of implemented remedies. The
investigations concluded that plume contaminants were being
successfully captured, and indicated the need for additional
monitoring wells to monitor a surface water body. The Air Force
completed an addendum to the basewide RAP for five sites.
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The Air Force also completed construction of the RA system at
SS 057. A draft operating properly and successfully document
for SS 005 received concurrence contingent upon incorporating
EPA comments.
In FY04, the installation completed the first 5-year review and
carried out a screening for residual mercury vapors and
radioactive materials. The installation conducted a remedial
process optimization (RPO) study for three pump-and-treat
systems and implemented a short-term RPO recommendation
for a rebound study at the soil vapor extraction system at Site
FT 002. The installation removed a previously unknown
300-gallon UST. The installation created a project to fill data
gaps at Sites LFs 030 and 031 and issued a request for
proposal. Site ST 069 attained the State's cleanup action
levels. The RAB met and was presented with the findings of the
5-year review and a description of the cleanup status at various
sites. The Air Force conducted an inventory of Military
Munitions Response Program (MMRP) sites. MMRP sites were
identified at this installation.
In FY05, the installation completed fieldwork for the remedial
investigation (RI) at SS 072 and issued a draft report. The Air
Force began evaluating requirements at MMRP sites at this
installation.
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Wurtsmith AFB completed a site assessment for the UST at
Building 5002. The installation completed fieldwork at LFs 030
and 031 to provide information to help resolve a disagreement
between the Air Force and the Michigan Department of
Environmental Quality (MDEQ) on the remedy. The Air Force
also submitted a risk assessment to the MDEQ to modify the
allowable discharge of perchloroethylene (PCE) to the wetland.
The cost of completing environmental restoration has changed
significantly due to technical issues and changes in estimating
criteria.
Regulatory issues delayed the feasibility study (FS) for SS 072.
Regulatory issues delayed the RI, decision document (DD), and
RD/RA at SS 072. Scheduling issues delayed the RCRA cap
resolution.
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The installation completed an archive search report to identify
and evaluate all MMRP sites and determine necessary
follow-on actions. The installation identified five MMRP sites.
These sites include the Fire-In Butt, Skeet Range (south),
Skeet Range (west), Grenade Range, and explosive ordnance
disposal (north).
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Plan of action items for Wurtsmith Air Force Base are grouped
below according to program category.
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0 Resolve RCRA cap issue with regulators in
FY07.
0 Complete FS and RD/RA at SS 072 in FY07.
0 Complete Water Effect Ratio and Use
Attainability Studies at LF 027 in FY07.
0 Complete DD for Sites FT 002, LF 027, ST
068, and SS 071 in FY07.
0 Complete the remedy at LFs 030 and 031 in
FY07.
0 Complete the FS for allowable PCE discharge
in FY07.
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0 Complete site inspections at five MMRP sites
in FY07.
0 Complete munitions and explosives of concern
clearance for one MMRP site in FY07.
M-213