Superfund Sites
Waste Treatment Home
> Superfund Sites
S/S and Superfund Sites
According to EPA, 23% of Superfund remedial actions involving source
control have used solidification/stabilization treatment.
Popularity of S/S treatment in the Superfund program can be attributed
to the technology’s protectiveness of human health and the
environment and cost-effectiveness in treating a wide range of hazardous
constituents.
Examples of Superfund sites where S/S has been
used:
New Bedford Harbor, New Bedford, Mass.
S/S treatment technology is enabling the EPA to cleanup the New
Bedford Harbor Superfund Site while reusing the treated material
to build a dewatering facility. The New Bedford site is a 18,000-acre
estuary contaminated with polychlorinated biphyenyls (PCBs) and
heavy metals. Cement-based S/S was used on a portion of the site
to create new land for construction of a dewatering facility. Sediment
with less than 50 ppm PCBs was treated by S/S and used as fill to
an area behind bulkheads creating new land. For a more detailed
description of this project click here. More.
Yellow Water Road, Baldwin, Fla
PCB-contaminated soils were treated and disposed on-site on this
Superfund remedial action. PCB concentrations in of the soil exceeded
600 ppm. More.
Peak Oil/Bay Drum, Tampa, Fla.
The Peak Oil Superfund site is situated within a derelict industrial
area of wetland. The former waste oil recycling plant site covered
15.5 acres and was contaminated with waste oil products, including
PCBs and trichloroethylene. Lead was also present on the site. As
a result of a previous remediation attempt (infrared heat treatment),
a stockpile of contaminated ash was also present. The geology of
the area was of variable drift and included sand, silt, clay, and
peat. The area had a shallow water table with a low hydraulic gradient
to the west. More.
90th South Battery Site, West Jordan, Utah
EPA Region 8 selected S/S to treat contaminated soil in an emergency
response at the 90th South Battery Site. Lead and arsenic contaminated
soils discovered during highway construction were treated on-site
and reused as base for pavement used for composting operations at
a local landfill. More.
Brunswick Wood Superfund Site,
Brunswick, Ga.
The Brunswick Wood Preserving site in a former
wood treating facility in Georgia, is using cement stabilization/solidification
to remediate 84 acres (34 hectares). The facility used creosote,
pentachlorophenol (PCP) with dioxin, and copper/chromium/arsenic
(CCA) preservatives in the manufacturing of railroad ties, telephone
poles, and pressure-treated lumber. Soil and sediment at the facility
are contaminated with these polycyclic aromatic hydrocarbons (PAH),
dioxin, and heavy metals. More.
EPA Publications about S/S at Superfund Sites:
(Click on title for link)
Slurry Walls for Waste Management
Brodhead Creek, Stroudsburg, Pennsylvania
Slurry walls are used in waste management to control the
flow of groundwater at contaminated sites. One of the earliest uses
of slurry walls in EPA’s Superfund program was at Brodhead
Creek Site in Pennsylvania. The 12-acre site is the location of
a former coal gasification plant which operated along the west bank
of Brodhead Creek in the Stroudsburg, Pennsylvania. In 1981, EPA
took steps to stop the seepage of coal tar from the site into the
creek by constructing an underground cement-bentonite slurry wall.
The slurry wall was installed between the toxic coal tar deposits
and the creek. The 12-inch wide (30cm) 638-foot (194-m) long trenched
wall ranged in depth from 18 to 23 feet (5.5-7m). The slurry wall
was part of the remedy for Operable Unit 1 of the site. Although
some coal tar as source material of contamination was pumped from
the site, EPA determined that complete removal of the residual coal
tar would be technically unworkable due to site-specific constraints.
Both the first 5-year review (1999) and second 5-year review (2004)
of the remedy completed by EPA indicated that the remedy including
the slurry wall continues to be protective of human health and the
environment. More.
|