Site-wide Remedy

The site-wide remedy, will provide long-term protection to human health and the environment and will return the property to productive use. The major components of the remedy are listed below:

  • Installation of a sub-surface, vertical hydraulic barrier wall and continued operation of the groundwater extraction and treatment system to prevent contaminated groundwater from reaching the Quinnipiac River;
  • Treatment of Dense Non-Aqueous Phase Liquids (DNAPL), the most highly contaminated area, using in-situ thermal remediation to remove the primary source of groundwater contamination;
  • Construction of protective barrier covers over the west side of the site to allow safe commercial/light industrial redevelopment of this portion of the property;
  • Stabilization and installation of low-permeability covers over both the North and South Piles in the east side of the site to safely contain and prevent future contact with contaminated materials, and minimize groundwater impacts;
  • Construction of protective barrier covers and low-permeability covers over the east side of the site;
  • Creation of upland and wetland ecological habitat on the east side of the property, and maintenance of an ecological preserve with walking trails for guided viewing and interpretative environmental education;
  • Focused remediation of sediment from two areas of the Quinnipiac River tidal mud flats and from a small stretch of South Creek in a manner that would minimize damage to ecological habitat;
  • Placement of Environmental Land Use Restrictions, to prohibit residential use, restrict groundwater use, and prohibit disturbance to or demolition of engineered controls (e.g. protective barrier covers) constructed on the site;
  • Long-term operation, monitoring, and maintenance to verify continued protection of human health and the environment.

Proposed Future Use

The remedy allows for the future use of the property. Approximately 17 acres of land on the western side would be made available for future commercial or light industrial use. Over 60 acres of tidal marshes, inland wetlands and upland meadows on the eastern side would be restored as an ecological preserve. New open space and ecological habitat would be created on the banks of the Quinnipiac River and an interpretive trail would be created to allow community groups to visit the site and study the varied eco systems.