Appendix M: Installation Narrative Summaries - denix

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In July 1993, the BRAC Commission recommended closure of
Agana Naval Air Station (NAS). The installation was closed on
March 31, 1995. A community relations plan was published in
FY92, and three information repositories were established. A
BRAC cleanup team (BCT) and a Restoration Advisory Board
(RAB) were established in FY93.
To date, the installation has identified 38 sites. Findings of
suitability to lease were completed for three parcels, along with
an interim lease and a joint use agreement with the Guam
International Airport Authority (GIAA). In addition, 5 parcels of
the NAS, totaling 1,179 acres, have been transferred to the
Government of Guam (GovGuam) and GIAA. The cleanup
progress at Agana NAS for FY02 through FY05 is detailed
below.
In FY02, an investigation found no contaminants at the
abandoned drum sites. The Navy completed an inventory of all
Military Munitions Response Program (MMRP) sites. No MMRP
sites were identified at this installation.
In FY03, Agana NAS completed collecting and analyzing fish
and sediment samples for polychlorinated biphenyls (PCBs)
from a private residence fish pond located near the Agana
Power Plant as requested at a RAB meeting. Regulators
requested additional fish samples in the Agana Swamp to
determine if PCB levels in fish have decreased. The installation
negotiated with the BCT to install two additional monitoring
wells at Site 37. One RAB meeting and three BCT meetings
were held.
In FY04, the installation completed storm damage repairs at
Site 1. Agana NAS conducted a dye trace test to confirm
effectiveness of long-term monitoring wells at Site 1, which was
inconclusive. Regulators re-evaluated the relative risk
evaluation for 12 Operable Unit (OU) 2 sites requiring restricted
reuse. Nine sites were revised from industrial to unrestricted
land use. Historical risk data for fish in Agana Swamp was
re-evaluated to support an additional round of required fish
sampling to determine if PCB levels have decreased at Site 35.
The installation completed planning documents for addition of
two monitoring wells at Site 37. At the former Agana NAS Navy
Exchange Service Station, Buildings 15-46a, the Guam
Navy
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Economic Development Authority cleaned up a petroleum
substance rising from the ground. The parcel was turned over
in an early transfer agreement to GovGuam, but the
contamination was suspected to be from the former Navy
service station operation of a 100-gallon waste oil underground
storage tank, oil water separator, and associated piping not
reported in the Environmental Baseline Survey (EBS). During
investigative site visits for development of sampling plans,
regulators determined that the source was the sewer system
connected to the service station drains, oil water separator
drum and piping. The draft site investigation (SI) work plans
were completed under site basewide EBS. One RAB and two
BCT meetings were held.
In FY05, Agana NAS completed the dye trace study for Site 1
and began an evaluation with regulators to determine landfill
monitoring network design. The installation completed
proposed plans (PPs) and draft decision documents (DDs) for
Site 1, Site 38, and 28 OU 2 sites. Site 37 monitoring well
installation and two rounds of sampling were completed. The
installation completed the SI fieldwork sampling and analysis to
determine further response actions required at Building 15-46A.
Three public meetings and two BCT meetings were held. The
BCT performed a review of the PP and both EPA and Guam
EPA attended Navy public meetings providing cooperative
regulator support.
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Agana NAS completed monitoring of the well network
installation at Site 1. The Navy completed PCB remedial
actions (RAs) at Agana Power Plant Site 37 and included these
actions in the remedial investigation report. The installation
achieved resolution for fish monitoring at the Agana Swamp.
The installation completed a draft of the Building 15-46A SI
report and determination of further action requirement.
Regulatory issues concerning land use control language
delayed the DDs and RA work plans for Site 1, Site 38, and OU
2 (28 sites).
The installation held one RAB and one BCT meeting.
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The Navy has identified no MMRP sites at this installation.
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Plan of action items for Agana Naval Air Station are grouped
below according to program category.
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0 Complete DDs and RA work plans for Site 1,
Site 38, and OU 2 (28 sites) in FY07.
0 Complete long-term monitoring plan for Site 1
in FY07.
0 Conduct fish sampling at the Agana Swamp and
complete RI report at the Agana Power Plant
in FY07.
0 Perform pipeline removal at Building 15-46a
in FY07.
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There are no MMRP actions scheduled for FY07 or
FY08.
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