Value Added with Remediation at Edgewater ALCOA Brownfields Site
Location: Edgewater, NJ, USA
Project Description:ESI conducted remediation of a PCB-impacted facility located in a residential community in Edgewater, New Jersey. The nine-acre vacant property, formerly owned by Alcoa Corporation, contained several reinforced concrete and steel structures. The largest was a 10-story building, with residential areas along three sides of the property. The site was used as an aluminum aircraft parts manufacturing plant. As a result of plant operations, concrete slabs were contaminated by PCBs.
Studies conducted at the facility identified areas of elevated PCB concentrations ranging from several parts per million (PPM) to several thousand PPM. Developers had tried to develop the site but had failed to find ways to handle the PCBs.
ESI designed a work plan that provided for the complete removal of the PCB-impacted concrete using sawcutting and pneumatic hammering. Concrete with PCB concentrations in excess of 50 PPM was transported to the TSCA landfill in Model City, New York.
Concrete with PCB concentrations below 50 PPM were crushed in an on-site recycling center and stockpiled for use as roadbase. This greatly reduced remediation costs, and allowed concrete to be crushed and re-used. Polyethylene enclosures were constructed around the areas undergoing concrete removal to prevent particulate matter emissions.
All buildings were fully enclosed from top to bottom along the exterior and dust migration was minimized and controlled by continuous water spraying to prevent particulate emissions to the residential community and a neighboring school. Continuous air monitoring for particulates was conducted throughout the duration of the project.
ESI conducted and participated in public meetings to inform the community about the protective measures being taken.
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