U.S. EPA Contaminated Site Cleanup Information (CLU-IN)


U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division
Lawrence Aviation Industries, Port Jefferson Station, NY
Superfund Removal & NPL
 
 
IMAGE GALLERY

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Prior to Cleanup
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Removal Actions
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Conceptual Site
Model
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Process Flow
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Integrated Units
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Heat Exchanger
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Building Envelope
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Building Insulation
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Interior Features
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Pervious Pavement
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Discharge
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Revegetation


Cleanup Objectives: Remediate groundwater and soil contaminated by volatile organic compounds (VOCs) and polychlorinated biphenyls (PCBs) at and downgradient of this former titanium-sheeting manufacturing facility occupying 126 acres near the Long Island Sound; removal and remedial components include excavation and offsite disposal of PCB-contaminated soil followed by air stripping of groundwater at an onsite plant to treat the contaminant source and an offsite plant (approximately one mile downgradient within the Village of Port Jefferson) to treat a contaminant plume

Green Remediation Strategy: Integrate an onsite geothermal system into the water treatment process at both treatment plants and implement other green building practices for plant design and construction; for each plant:

  • Investigate local sources of equipment that could be repurposed for the groundwater treatment systems, to maximize material reuse, reduce project costs, and reduce the volume of material disposed of at local landfills
  • Install vertical wells constructed of steel and thermally fuse all the pipe connections to minimize heat loss
  • Assure a full well seal by packing each one with 20% bentonite slurry along its full length, which extended 250 feet below ground surface at the onsite facility and 80-140 feet below ground surface at the downgradient facility
  • Connect the wells to a single header assembly that directs water to a single 1.5-ton geothermal heat exchange unit operating in the open-loop treatment system
  • Use the U.S. Green Building Council's Leadership in Energy and Environmental Design (LEED) program as a platform to select other environmentally friendly design and construction techniques for the treatment buildings
  • Design cleanup (at the offsite property) in ways that accommodate community plans for future reuse of the property

Results:

    Geothermal Energy in the Treatment Process
  • Reusing equipment that was reconditioned and refabricated to meet most needs of one treatment plant; a local drycleaning establishment provided an air stripper and a nearby manufacturing firm with a decommissioned pump-and-treatment system provided two aqueous phase carbon vessels, a vapor phase carbon vessel, bag filters, a blower device, piping, valves, connectors, pumps, electrical wiring, and interior light fixtures
  • Routing the extracted groundwater, which averages a temperature of 56°F, immediately to the heat exchanger; heated or cooled air from the exchanger is transferred at an average rate of 600 standard cubic feet per minute to the treatment building's ductwork, which circulates warm air throughout the building in winter or cool air in summer
  • Pumping groundwater from the heat exchanger to the air stripping system, which is equipped with two 3,000-pound filtration vessels containing reactivated instead of virgin carbon to treat air prior to its emission from the plant
  • Passing water from the air stripping system to bag filters that extract solid materials, to minimize potential plugging in discharge piping and associated treatment inefficiencies
  • Returning fully processed water from the onsite facility to the underlying aquifer for water storage, through a network of five 258-foot injection wells approximately 1,000 feet upgradient from the extraction wells
  • Discharging fully processed water from the downgradient facility to an existing pond and its adjoining creek rather than the sewer system, at a point approximately 20 feet from the extraction wells
  • Avoiding 6,000-7,000 kWh of grid-supplied electricity at each plant every year by allowing the ground below and around the treatment building to serve as the structure's heat source in winter and heat sink in summer
  • Saving $1,300-1,700 in annual operation and maintenance costs for each plant every year through the avoided electricity purchases
  • Offsetting an estimated 4.1 to 4.8 metric tons of carbon dioxide (equivalent) associated with each plant annually through use of renewable, geothermal energy

    Additional Design/Construction Efficiencies of the Treatment Plants
  • Purchased most lumber from a Certified Green Dealer™ lumberyard and maximized purchases of wood certified under the Sustainable Forestry Initiative® or Program for Endorsement of Forest Certification
  • Chose double-hung, argon-filled windows with an energy performance U-factor of 0.30
  • Installed a highly reflective metal "cool" roof (with an solar reflectance index (SRI) value of 29) while meeting the Village's architectural requirements
  • Used low-maintenance, insect- and weather-resistant composite siding made of sustainable materials with low toxicity, such as wood pulp, cement, and sand
  • Insulated with spray foam made of renewable resources (soybeans) and through processes involving no formaldehyde, petroleum, asbestos, fiberglass or VOCs
  • Equipped the treatment buildings with tank-less water heaters that provide heated water on demand, which avoids the need for a storage tank and increases energy efficiency
  • Installed treatment-area flooring consisting of polished and sealed concrete, and covered floors of common areas with panels of rapidly renewable cork and an underlayment made of post-consumer recycled granulated rubber from tires
  • Selected light-reflective ceiling tiles comprising 45% rapidly renewable resources and 23% recycled content
  • Used remnant framing lumber instead of virgin wood to construct cabinetry, functioning hurricane shutters, and carriage doors for community aesthetics

    Additional Onsite and Offsite Efficiencies
  • Equipped pumps at the off-site facility with variable speed drives (VSDs) to accommodate fluctuations in demands, allowing the pumps to operate at lower speeds while still meeting flow demands; use of VSDs results in lower energy utilization than single speed drives and cause less stress on the equipment, which reduces maintenance costs and potentially extends equipment life
  • Substituted asphalt pavement in parking and access areas with a pervious pavement system that allows grass to grow through the pavement, allows rainwater to infiltrate soil below the pavement, and avoids the temperature extremes encountered on asphalt surfaces
  • Transferred and stockpiled 240 tons of soil that was excavated during pervious pavement installation to a nearby municipal property for as-needed use by the Port Jefferson Highway Department; prior to transfer, analytical tests were conducted on the soil to assure no residual contamination
  • Landscaped the site after building construction by removing invasive non-native vegetation, installing jute matting to control soil erosion and establish plant roots, planting native species with approval from state and local organizations, and mulched areas with chipped wood from selected trees requiring removal prior to construction
  • Maximized subcontracting to local workers, equipment rental from local organizations, and purchases of locally made products

Property End Use: Community use of the offsite property as a field office for the municipal parks department and a concession facility for an adjacent park, after remediation goals are met and the offsite treatment plant is decommissioned

More detail is available in Region 2's site green sheet for Lawrence Aviation Industries Site, Old Mill Pond Area, Port Jefferson, New York (PDF) (14 pp, 268.67K)

Point of Contact: Keith Glenn, U.S. EPA Region 2

Update: November 2011

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