Appendix M: Installation Narrative Summaries - denix

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The Navy owned the Old Navy Dump/Manchester Annex from
1919 to 1960. During that time, three areas (a net depot, a fire
training area, and a landfill) were established at the property.
Activities at the property included maintenance, painting,
sandblasting, and storage of steel cable net. The Navy
disposed of domestic waste, wood, and metal waste originating
from the Annex and the Puget Sound Naval Shipyard in a
landfill. Currently, the National Oceanic and Atmospheric
Administration, the National Marine Fisheries Service, an EPA
laboratory, and a portion of Manchester State Park occupy the
property. Preliminary assessments and site inspections
conducted at the property since FY87 identified past releases of
hazardous substances from the three areas. Contaminants,
have been detected in soil at the landfill, at the fire training
area, and in surface water and sediment at the property.
Contaminants of concern include heavy metals, polychlorinated
biphenyls (PCBs), petroleum hydrocarbons, dioxins and furans,
and asbestos. The Manchester Annex work group was
established in FY94. EPA placed the property on the NPL in
May 1994. During FY95, a potential unexploded ordnance area
was identified, but the U.S. Army Corps of Engineers (USACE)
determined that the area was not accessible to the general
public and thus the area was considered for no further action.
The USACE signed an interagency agreement (IAG) in July
1997. In FY04, USACE completed the first 5-year review, which
determined that the remedy continued to be protective.
To date, the Army and regulators have signed one Record of
Decision (ROD). The cleanup progress at the Old Navy
Dump/Manchester Annex for FY02 through FY05 is detailed
below.
In FY02, USACE completed the Phase II remedial action
construction. USACE also initiated long-term management
(LTM) of the landfill cover.
In FY03, USACE completed the institutional control plan.
USACE continued LTM for inspection and maintenance of the
landfill cover.
In FY04, USACE continued LTM for inspection and
maintenance of the landfill cover. USACE also completed the
first 5-year review on the site and identified several areas
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where USACE needs to take action. Additionally, USACE
determined that the remedy continued to be protective. USACE
has identified no Military Munitions Response Program (MMRP)
work at this property.
In FY05, USACE conducted the required actions from the
5-year review. The remedy has been functioning as intended.
USACE initiated the shellfish tissue and sediment study to
determine the health of the bivalve population. The study
suggested that the remedy in the ROD is operating properly.
Contamination did not appear to be reducing the bivalve
population.
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USACE continued to conduct the compliance monitoring as
required in the ROD. The installation continued to monitor the
landfill for uncontrolled releases and found none. USACE
conducted a clam counting survey to determine if the bivalve
population was sufficient for sampling. The number of
appropriate bivalves was not sufficient to sample. Ongoing
landfill cap maintenance actions were accomplished, including
mowing, gas vent sampling, and drainage system checks.
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USACE has identified no MMRP sites at this property.
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Plan of action items for Old Navy Dump/Manchester Annex are
grouped below according to program category.
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0 Continue compliance monitoring in FY07.
0 Continue LTM and maintenance of the Landfill
Cap in FY07.
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There are no MMRP actions scheduled for FY07 or
FY08.
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M-156