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.