Background

SRSNE is a former solvent recovery facility located in Southington, Connecticut where spent solvents were recycled from industrial operations beginning in the 1950’s and continuing until 1991. After the solvents were distilled and reused, the unusable solvent sludges were disposed of in two unlined lagoons from 1957 until 1967, when the lagoons were drained and covered with fill. After the lagoons closed, wastes were burned in an open pit on site or disposed of offsite. By the 1970s, the state ordered the end of incineration activities.

Due to site operations, the ground and groundwater were contaminated with a wide variety of VOCs and PCBs. The site was placed on the EPA Superfund list in September 1983, which spurred a decades-long attempt to remediate the site back to safe levels.

Colloidal Activated Carbon Acts As
Permeable Barrier to Eliminate Risk