Burnt Fly Bog
Texas & Spring Valley Roads
Marlboro Township, Monmouth County
PI #:
G000004397
BLOCK: 146 LOT: Upland Area: 47
LOT: Tar Patch: 7
LOT: N. Wetlands: 8
LOT: W. Wetlands: Various
Community Relations Coordinator: Mindy Mumford (609) 777-1976
SITE DESCRIPTION/RESOLUTION OF ENVIRONMENTAL CONCERNS:
 As
of 28 June 2004
The Burnt Fly Bog site is located on a ground water discharge area of
the Englishtown aquifer, where ground water flows to the surface and drains
into Deep Run, a nearby creek. During the 1950s and 1960s, waste oil was
stored in several unlined lagoons encompassing a 10-acre area of the property.
The lagoon area became known as the "Uplands." Waste oil from
the Uplands eventually contaminated other areas, which became known as
the "Northerly Wetlands," the "Tar Patch," and the
"Westerly Wetlands." In addition, adjacent to the Westerly Wetlands
is the "Downstream Area," where contaminated sediments that
migrated from upgradient areas had settled in a stream bed. While the
entire Burnt Fly Bog encompasses about 1,700 acres, the areas of contamination
are limited to approximately 60 noncontiguous acres.
USEPA added Burnt Fly Bog to the National Priorities List of Superfund
sites (NPL) in 1983. Later that year, NJDEP completed a Remedial Investigation
and Feasibility Study (RI/FS) and issued a Record of Decision (ROD) with
USEPA concurrence that required remediation of the Uplands. Between 1985
and 1989, NJDEP conducted several remedial actions in the Uplands including
the removal of waste referred to as the "Asphalt Pile," removal
of lagoon liquids, excavation and off-site disposal of approximately 85,000
tons of contaminated soil, stabilization of sludge and installation of
a clay cap over the area. Remediation of the Uplands area was completed
in 1992, after NJDEP removed about 700 tons of stockpiled PCB-contaminated
soil and transported it off site for incineration.
In 1988, NJDEP issued a ROD with USEPA concurrence for the Westerly Wetlands.
The ROD required the evaluation of innovative technologies to address
the contaminated soils at this area, with interim measures to contain
the contamination while the evaluations were being conducted. The interim
measures included installation of a fence around the Westerly Wetlands,
removal of contaminated soil and sediments from the Downstream Area, and
the installation of a sedimentation basin to prevent contaminated sediments
from the Westerly Wetlands and other areas from migrating off site. NJDEP
completed excavation and off-site disposal of approximately 12,000 tons
of contaminated soil and sediments from the Downstream Area and construction
of the sedimentation basin in 1996. NJDEP is maintaining the sedimentation
basin and sampling the surface water and sediments in Burnt Fly Brook,
which receives water from the basin, on a regular basis. Access to the
Westerly Wetlands is being prevented by a security fence that was installed
pursuant to the 1988 ROD. In 1998, after completing a supplemental Feasibility
Study for the site, USEPA signed a ROD with NJDEP concurrence for the
Westerly Wetlands, Northerly Wetlands and the Tar Patch. The ROD required
excavation and disposal of contaminated soil from the Northerly Wetlands
and the Tar Patch followed by backfilling of these areas with clean materials
and reestablishment of the wetlands, and no action for the Westerly Wetlands
except for long-term biological sampling to monitor the impact of the
contaminants on wildlife. NJDEP completed the Remedial Design for the
cleanup action in 2002 and plans to begin excavating the contaminated
soil in mid-2003.
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