Linemaster Switch Corp

⚠ Superfund · Construction complete

Physical cleanup activities at the site are ongoing. The work currently includes a groundwater extraction and treatment system. Groundwater and surface water monitoring is ongoing, and will continue until cleanup goals have been reached.

Location

CityWoodstock
CountyWindham County
StateConnecticut
Coordinates41.94056, -71.96694

Contaminants of concern

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — 01/01/1985
  2. Proposed to the National Priorities List — 06/24/1988
  3. Finalized on the National Priorities List — 02/21/1990
  4. Remedial Investigation Started — 07/10/1989
  5. Final Remedy Selected — 07/21/1993
  6. Remedial Action Started — 05/27/1999
  7. Final Remedial Action Started — Estimated Dec 2027 - Feb 2028
  8. Construction Completed — 03/29/2005
  9. Deleted from National Priorities List — Not Yet Achieved
  10. Most Recent Five-Year Review — 09/23/2024

EPA references

Other Superfund sites in Windham County

EPA-regulated facilities nearby

Understanding this Superfund site

Linemaster Switch Corp is a federal Superfund site in Connecticut. The Superfund program, created by Congress in 1980, addresses sites where hazardous substances have been released or threaten release into the environment. EPA scores potential sites using the Hazard Ranking System; those that score high enough are placed on the National Priorities List.

Current status: Construction complete. Physical construction of the cleanup remedy is complete, though long-term monitoring and institutional controls typically continue for years or decades. Groundwater treatment systems, for example, often run long after surface cleanup finishes.

EPA has identified 10 contaminants of concern at this site, including 1,1,1-trichloroethane, 1,1,2-trichloroethane, 1,1-dichloroethane. Contamination has been detected in groundwater, soil, surface water.

If you live near this site and have health concerns, your state health department can provide site-specific guidance. EPA maintains a community involvement program for most NPL sites, and site documents — including the Record of Decision, five-year reviews, and public health assessments — are typically available through EPA's Superfund site profile.