Lipari Landfill Superfund Site
Construction Project Scheduled for this
Summer - Cleanup Activities Continue
Mantua, New Jersey
PRO"*
Community Update
Summer 2011
MARK YOUR CALENDARS
Wednesday July 13,2011
Project Information Sessions
will be held at the South Jersey
Technology Park, first floor
conference room No. 137, located
at 107 Gilbreth Parkway (access
from Route 322 near Route 55)
Mullica Hill, New Jersey at 1 :00 to
3:00 pm and at 5:00 to 7:00 pm.
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CONTACT INFORMATION
Questions about the construction
project and day-to-day site
activities can be directed to:
Keith Wilson, USAGE
Construction Representative
856-582-7396 or e-mail at
Keith. E.Wilson(3)Aisace. army, mil
For general project inquiries:
Betsy Donovan, EPA
Project Manager
212- 637-4369 or e-mail at
donovan.betsv(3)epa.sov
The U.S. Environmental Protection Agency (EPA)
will be enhancing the existing landfill containment
system this summer by installing an underground wall
and landfill cap on the north side of the site near
Rabbit Run. Major construction activities will take
several months to complete. Contaminated vapors
within the landfill and groundwater will continue to
be captured and treated, with more than 600 thousand
pounds of contamination removed to date. Frequent
testing of water and air, on and off the landfill site,
ensures that the surrounding community is not
exposed to harmful chemicals.
INFORMATION SESSIONS - JULY 13
Project representatives from EPA, the U.S. Army
Corps of Engineers (USAGE) and the construction
contractor, Sevenson Environmental Services, will be
available to provide project information at two
sessions on July 13* at the South Jersey Technology
Park (first floor conference room) located adjacent to
the landfill, from 1:00 to 3:00 pm and 5:00 to 7:00
pm. This is an informal opportunity for members of
the local neighborhood to meet with the project team
and discuss the project; feel free to stop by anytime
during the scheduled sessions.
HISTORY/BACKGROUND INFORMATION
The 16-acre site contained a six-acre landfill that
accepted household and industrial waste materials
between 1958 and 1971. Groundwater, surface water,
soil and sediments at the site were contaminated with
heavy metals, volatile organic compounds (VOCs),
and semi-volatile organic compounds (SVOCs).
These pollutants seeped into nearby marshlands,
Chestnut Branch Stream, Rabbit Run Stream and
www.EPA.gov/region2/superfund/npl/LipariLandfill
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Alcyon Lake. The air at the site was also contaminated with vapors from the VOCs. As an
immediate response, EPA installed a security fence around the site and the nearby wetlands in
1982 and developed a remedial design. In 1983, EPA constructed a landfill containment system
consisting of an underground wall and a synthetic landfill cap. In 1990, EPA began construction
of a groundwater treatment plant at the site. From 1992 to 2008, the
landfill interior was flushed with clean water to remove soluble chemicals; contaminated water
was then extracted and treated on-site, before being sent for final treatment at the Gloucester
County sewage treatment plant. Landfill flushing resulted in significant reductions of
contaminant concentrations. In 2000, a vapor extraction and treatment system was installed on-
site to clean up the landfill's toxic vapors.
The primary responsible party, who polluted the landfill with chemical waste, cleaned up off-site
contamination that migrated out of the landfill prior to the installation of the containment system.
This work was done under EPA oversight and included the collection and treatment of
groundwater and the excavation of contaminated soils and sediments in Chestnut Branch Marsh
and Alcyon Lake. A drain was installed in the surficial Cohansey aquifer between the landfill
and the marsh to capture any seepage from the landfill. An additional drain was installed in the
deeper Kirkwood aquifer to capture groundwater contamination under the landfill. Alcyon Lake,
which had been closed for recreational use for a number of years due to contamination, was
reopened in October 1995.
The vapor treatment system continues to remove and treat hundreds of pounds of contamination
from inside the landfill every month. Trenches and drains continuously collect contaminated
groundwater that seeps out of the landfill; this groundwater is sent to the local county sewage
plant for treatment. The new project will encapsulate a small contaminated area outside the
existing wall and will allow EPA to perform additional cleanup within that encapsulated area.
www.EPA.gov/region2/superfund/npl/LipariLandfill
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