Three Star Anodizing Record of Decision (PDF) - New York State ...

Soil vapor intrusion testing and, if necessary, mitigation of soil vapor impacts to the Axton
Cross building will be conducted.
3. Asbestos containing material in the Building 15/16/17 area will be removed and
appropriately disposed off-site to allow for safe implementation of the vat remedy. Debris,
water and sludge will be removed from the 23 plating vats and disposed of at an appropriate
facility. The vats will then be cleaned, demolished and disposed of off site. Any grossly
contaminated soil beneath the vats will be excavated and disposed of off site.
4. Approximately 400 cubic yards of contaminated soil will be excavated from an area of about
10,000 square feet in the lower raceway from the bridge over the raceway to about 100 feet
east of the raceway to a minimum depth of one foot and covered with a minimum of one foot
of clean fill and topsoil.
5. To provide a safe aquatic habitat, the Three Star lagoon will be pumped dry and
approximately 2,100 cubic yards of contaminated sediment will be stabilized and excavated
to Department sediment cleanup objectives to a maximum depth of about eight feet. The
excavated sediment will be disposed of off site and replaced with ecologically compliant fill
to the original depth.
6. Surface debris will be removed from the manufactured gas plant (MGP) area. The gas holder
foundations in the MGP area will be demolished and disposed of at an appropriate facility.
The soil within the gas holders and any grossly contaminated soil will be excavated and
disposed of off site. Trees and other vegetation will be removed as needed. A 25-foot buffer
will be excavated along the Wappinger Creek and the Three Star Lagoon to a depth of one
foot and covered with two feet of clean fill and topsoil meeting commercial SCOs. The rest
of the MGP area will be covered with a demarcation barrier and one-foot of clean fill and
topsoil. Area will be replanted with native plants.
7. Approximately 2.5 acres of the site, including the area just west of the Axton Cross building
and areas near the other on-site buildings, will be covered with a soil cover. The soil cover
will be constructed to prevent exposure to contaminated soils. The one foot thick cover will
consist of clean soil underlain by an indicator such as orange plastic snow fence to demarcate
the cover soil from the subsurface soil. The top six inches of soil will be of sufficient quality
to support vegetation. Clean soil for covers and backfill will constitute soil that meets the
Division of Environmental Remediation’s criteria for backfill or local site background as set
forth in 6 NYCRR 375-6.7(d) and as specifically approved by the Department for this
application.
8. Imposition of an institutional control in the form of an environmental easement that will
require (a) limiting the use and development of the property to commercial use; (b)
compliance with the approved site management plan; (c) restricting the use of groundwater
as a source of potable or process water, without necessary water quality treatment as
determined by NYSDOH; and (d) the property owner to complete and submit to the
Department a periodic certification of institutional and engineering controls.
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