Appendix M: Installation Narrative Summaries - denix
Appendix M: Installation Narrative Summaries - denix
Appendix M: Installation Narrative Summaries - denix
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From the early 1940s until it was commissioned as a submarine<br />
base in 1977, Bangor Naval Submarine Base was used to<br />
store, process, and ship munitions. Past chemical releases at<br />
the installation are primarily related to the detonation,<br />
demilitarization, and disposal of explosive ordnance and<br />
associated activities. The Navy conducted an initial assessment<br />
study in FY83 to identify sites requiring further investigation<br />
because of suspected soil and groundwater contamination.<br />
EPA placed the Bangor Ordnance Disposal area on the NPL in<br />
July 1987 and the Bangor Naval Submarine Base in August<br />
1990. In January 1990, the Navy, EPA, and the State of<br />
Washington signed a federal facility agreement (FFA) for the<br />
installation. In 2005, the BRAC Commission recommended<br />
Bangor Naval Submarine Base for realignment. The installation<br />
completed 5-year reviews in FY00 and FY05.<br />
Forty-three sites have been identified at this installation. These<br />
sites were grouped into eight operable units (OUs). The<br />
installation has completed eight Records of Decision and<br />
performed five expedited response actions. Construction<br />
completion documents for OUs 1, 2, and 7 were submitted to<br />
EPA and the Washington Department of Ecology. The cleanup<br />
progress for Bangor Naval Submarine Base for FY02 through<br />
FY05 is detailed below.<br />
In FY02, the installation submitted a proposal for partial deletion<br />
from the NPL for all media with the exception of groundwater<br />
for OUs 1 and 2. Ordnance monitored natural attenuation<br />
(MNA) and downgradient aquifer conditions were evaluated at<br />
OU 1. The installation continued long-term operations (LTOs)<br />
and long-term management (LTM) at OUs 1, 2, and 8, and<br />
implemented and maintained land use controls (LUCs). The<br />
Navy completed an inventory of all Military Munitions Response<br />
Program (MMRP) sites and identified one MMRP site at this<br />
installation.<br />
In FY03, the installation collected additional data to<br />
demonstrate that the site treatment system could be shut down.<br />
The installation continued LTO and LTM at OUs 1, 2, and 8.<br />
LUCs and institutional controls (ICs) were implemented and<br />
maintained. MNA was demonstrated as a viable alternative<br />
remedy at OU 1.<br />
Navy<br />
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In FY04, the installation collected more data to demonstrate<br />
that the pump-and-treat system at OU 1 (Site 200) could be<br />
shut down. The Navy began the second basewide 5-year<br />
review. The installation continued LTM and LTO at OUs 1, 2,<br />
and 8, and began optimization studies at Sites 200 and 204.<br />
The installation initiated a cleanup level study for Pogy Road.<br />
The installation implemented and maintained LUCs and ICs.<br />
In FY05, Bangor Naval Submarine Base completed an<br />
optimization study at OUs 1, 2, and 8, and presented an<br />
alternate remedy and systems shutdown to regulators. The<br />
Navy completed a second 5-year review. The installation<br />
completed the Pogy Road cleanup and discontinued product<br />
recovery at OU 8. The Navy initiated a preliminary study at<br />
MMRP Site EO 300.<br />
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Bangor Naval Submarine Base completed repairs to Site 201<br />
and negotiated with regulators to implement recommendations<br />
from the optimization study. The Navy also discontinued<br />
sampling at Site 26. The installation finished sampling at OU 1,<br />
2, and 7, and did not detect perchlorate.<br />
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The Navy completed a preliminary investigation and report at<br />
MMRP Site EO 300.<br />
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Plan of action items for Bangor Naval Submarine Base are<br />
grouped below according to program category.<br />
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0 Implement optimization study recommendations<br />
in FY07.<br />
0 Continue LTO and LTM at OU 1, 2, and 8 in<br />
FY07.<br />
0 Install new wells at OU 1 and repair or close<br />
wells at OUs 2 and 8 in FY07.<br />
0 Delist soil at OU 1, 2, and 8 in FY07-FY08.<br />
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0 Conduct remedial investigation at Site EO 300<br />
in FY07-FY08.<br />
M-25
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