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Example
Projects
Fort
Trumbull Area, New London, CT
Since
1998, HRP Associates, Inc. has provided the New London Development
Corporation with environmental site assessment investigations and
remedial action plan development and oversight in the Fort Trumbull
area of New London, Connecticut. The 90-acre section of New London
is under redevelopment following an approved Municipal Development
Plan in which HRP is an integral part. The commercial, industrial,
former military, and residential properties under consideration for
redevelopment have been evaluated for known and potential sources of
contamination as a result of current or historical activities.
Initially,
HRP performed Phase I Environmental Site Assessments (ESAs) of some
80 different parcels to identify whether significant environmental
concerns are present. HRP performed pre- and post-demolition
inspections of each property as access was available. Based upon the
site inspections and Phase I assessment tasks, Phase II and III
subsurface investigations were performed on properties where there
were known or suspected contaminant sources. HRP has completed soil gas surveys, geophysical surveys, test
borings and ground water monitor well installations, and collection
and analysis of soil and ground water samples. Comprehensive summary
reports (environmental assessment, remedial action plans, remedial
action reports) have been completed, and HRP is working closely with
the Connecticut Department of Environmental Protection (DEP), the
Department of Economic and Community Development (DECD), the New
London Development Corporation (NLDC), the City of New London, and
the various engineering and construction management contractors
involved in the entire redevelopment process.
Remediation
has been completed on a number of large aggregated parcels. Funding
sources include the DECD and the U.S. EPA through the Brownfields
Assessment Demonstration Pilot issued to the City of New London.
Currently, several portions of the development area have moved to
the construction phase where HRP provides environmental plans and
specifications, material management services, and construction
oversight.
Former
Bethlehem Corp, Easton, PA
HRP is conducting a remedial
investigation at a former 100-year old steel foundry slated for
demolition and commercial development. The work is being conducted
pursuant to Pennsylvania’s Land recycling Program (Act2). The
34-acre site consists of the 29-acre foundry and an adjacent
five-acre automobile dealership.
A Phase II ESA identified 19
potential areas of concern including overall site-wide groundwater.
The investigation was conducted in a phased manner with each
phase of work building upon prior results.
A total of 25 bedrock wells and over 200 Geoprobe® soil
sampling locations were installed. Additional investigation
techniques included the use of hollow stem augers drilling, back hoe
test pits, and storm water system dye testing.
Air rotary drilling methods
were used to install monitoring wells in the limestone bedrock to a
depth of up to 200 feet. In some locations, telescoping casing was
used to case-off mud-filled voids. In
one location No.2 fuel oil free product was found on the water table
surface at a depth of 110 feet. A
free product skimming system was designed by HRP to remove the
product to the extent practical. Geoprobe® technology was used to
quickly assess soil quality beneath the foundry building floors as
well as to determine the lateral and vertical extant of foundry sand
disposed of on site. An
asbestos building material survey was also conducted.
The
results of the investigation were used to develop a site conceptual
models that depict source areas, migration pathways, exposure
points, and potential receptors. The models well be used to support
the selection of appropriate clean up standards for soil and
groundwater. The data has also be used to develop five DEP remedial
work plans designed cleanup identified areas of contamination
including the free product, asbestos removal, drum area cleanup, PCB
oil removal and foundry sand capping.
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Manufacturing
Facility, Lincoln, NH
HRP was retained by an
international electrical manufacturer to complete an environmental
site contamination assessment at a manufacturing facility site in
northern New Hampshire. HRP subsequently performed several phases of
hydrogeological investigations to define soil and groundwater
contamination (both overburden and bedrock aquifers).
Subsequently, HRP designed, pilot tested, and installed a
plume control and groundwater treatment system. HRP prepared a Site
Investigation Report and Remedial Action Plan pursuant to NH DES
regulations (ENV-WS 410) and is currently managing groundwater
contamination at the site under a Groundwater Management Permit
(GMP). HRP has recently
performed a pilot test of a Vacuum Enhanced Multi-phase Recovery
(VEMR) system to address a second on-site plume of VOC ground water
contamination in the overburden and shallow bedrock aquifers.
Other site activities
performed include an Environmental Compliance Audit and Stormwater
Discharge Evaluation. HRP has investigated and remediated a former
on-site hazardous waste landfill and designed, pilot tested and
installed two soil venting systems to address volatile organic soil
contamination. HRP is
presently monitoring all environmental treatment systems and
groundwater quality under the GMP and reuse of treated ground water
in the plant prior to discharge to the local STP.
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