Appendix M: Installation Narrative Summaries - denix
Appendix M: Installation Narrative Summaries - denix
Appendix M: Installation Narrative Summaries - denix
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Ellsworth Air Force Base (AFB) maintains a combat-ready force<br />
capable of executing long-range bombardment operations. The<br />
base was placed on the NPL in August 1990 and signed a<br />
federal facility agreement (FFA) in January 1992. Site types<br />
include landfills, underground storage tanks, maintenance<br />
areas, a fire training area, and a low-level radioactive waste<br />
burial site. Groundwater and soil contamination resulted from<br />
releases of trichloroethylene (TCE) and petroleum/oil/lubricants<br />
(POLs) at these sites. In FY95, the base formed a Restoration<br />
Advisory Board. In FY00, a 5-year review was completed for 13<br />
sites and in FY05, a second 5-year review was completed, both<br />
concluding that all sites were protective of human health and<br />
the environment.<br />
Fifteen sites were initially documented as having potential<br />
environmental impacts relating to past use. Follow on<br />
investigations and research documented others, bringing the<br />
total to 21. Sites at the installation were grouped into 12<br />
operable units (OUs). To date, Records of Decision have been<br />
signed for OUs 1 through 10 and OU 12. The cleanup progress<br />
at Ellsworth AFB for FY02 through FY05 is detailed below.<br />
In FY02, the installation continued the remedial investigation<br />
(RI) and started interim remedial action (RA) free product<br />
removal at Site RW 27. Long-term management (LTM) and<br />
RA-operations (RA-O) continued at OU 11 and other selected<br />
sites. The installation continued the RI and feasibility study (FS)<br />
for Site OT 18 and continued repairs to Landfill (LF) 05.<br />
In FY03, the Air Force completed repairs at LF 05, continued<br />
the RI/FS for Site OT 18, and removed free product at Site RW<br />
27. RA-O and LTM continued at selected sites. Additional data<br />
was collected for the expanded RI/FS for Site RW 27.<br />
In FY04, the installation completed the RI/FS for Site OT 18.<br />
For Site RW 27, the installation also completed the expanded<br />
RI and started the FS. In addition, Ellsworth AFB continued<br />
RA-O and LTM at selected sites. The preliminary assessment<br />
(PA) was no longer required, as the area previously identified<br />
by Air Force contractors as a Military Munitions Response<br />
Program (MMRP) area of concern was subsequently<br />
determined to be an explosives ordnance disposal site closed<br />
under the Environmental Restoration Program in FY97.<br />
Air Force<br />
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In FY05, Ellsworth AFB added information and reformatted data<br />
into a substantially expanded PA/site investigation for Site RW<br />
27, and continued RA-O and LTM at selected sites. The<br />
installation initiated a study of reductive biodechlorination and a<br />
study of impacts on substandard utilities and groundwater flow.<br />
Ellsworth AFB completed a second 5-year review. Additionally,<br />
Ellsworth AFB awarded a performance-based restoration<br />
project covering the closure of 13 <strong>Installation</strong> Restoration<br />
Program (IRP) sites by 2011. The installation conducted<br />
outreach in support of the Badlands Bombing Range cleanup<br />
(Site OT 18). The Air Force updated its MMRP inventory. No<br />
MMRP sites were identified at this installation during the<br />
inventory development.<br />
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Ellsworth AFB continued RA-O and LTM at selected sites. The<br />
installation initiated several reductive biodechlorination<br />
treatability studies at OU 04 and Site OT 20. The installation<br />
also initiated a data gaps investigation related to basewide<br />
groundwater at Site OT 20. The installation conducted outreach<br />
in support of the Badlands Bombing Range cleanup (Site OT<br />
18). The cost of completing environmental restoration has<br />
changed significantly due to changes in estimating criteria.<br />
Administrative issues delayed finalization of the expanded<br />
RI/FS report for Site RW 27.<br />
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The Air Force has identified no MMRP sites at this installation.<br />
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Plan of action items for Ellsworth Air Force Base are grouped<br />
below according to program category.<br />
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0 Continue RA-O and LTM at selected sites in<br />
FY07.<br />
0 Finalize the expanded RI/FS report for Site<br />
RW 27 in FY07.<br />
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There are no MMRP actions scheduled for FY07 or<br />
FY08.<br />
M-58
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