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Waste Site Cleanup & Reuse in New England
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  LINEMASTER SWITCH CORPORATION


Map this site in Cleanups in My Community
 Woodstock,  Connecticut
 Windham County
 Street Address: PLAINE HILL ROAD
 Zip Code: 06281
 Congressional
 District(s):

02
 EPA ID #: CTD001153923
 Site ID #: 0100041
 Site Aliases:

 Site Responsibility: Federal, State, Potentially Responsible Parties

 NPL LISTING HISTORY
 Proposed Date 06/24/1988
 Final Date 02/21/1990

Site Description
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The 45-acre Linemaster Switch Corporation site has been used to manufacture electrical and pneumatic foot switches and wiring harnesses since 1952. Facility operations involve the use of trichloroethylene (TCE), paint, and thinners. Wastes are stored in barrels inside of sheds near the factory building. Due to the spread of contamination, the site boundary has been expanded to 92 acres, extending to Route 171 to the south, Plaine Hill Road to the west, and Route 169 to the north and east. Approximately 2,100 people live within 3 miles of the site and obtain drinking water from wells drawing on the contaminated groundwater. An on-site well supplies drinking water to the factory and its offices. The site is surrounded by the Town of Woodstock, a rural community of approximately 5,300 people. Artificial ponds located on the site are used for boating.

Threats and Contaminants
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Groundwater, sediments, surface water, and soils are contaminated with TCE. TCE was also detected in Linemaster's main pump house well, which supplies drinking water to the factory and its offices. Solvents were detected in the artificial ponds. Public health threats included drinking contaminated groundwater and coming into direct contact with the soil, surface water, and sediments.

Cleanup Approach
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The site has and is being addressed in two stages: initial actions and a long-term remedial phase focusing on cleanup of the entire site.

Response Action Status
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Initial Action Linemaster began providing bottled water to its employees in 1986. Also in 1986, EPA began to provide bottled water to off-site residents whose wells were contaminated. Currently, filtration devices have been placed on all formerly affected wells and are periodically sampled and analyzed by Linemaster. Linemaster's main production well is now being treated by a filtration system. This well now supplies drinking water to the factory and one on-site residence. A water supply monitoring program has been established for on- and off-site wells. Monitoring wells have been drilled to determine the extent of site contamination and to aid in developing a cleanup remedy. In addition, Linemaster has installed a groundwater extraction and treatment system to reduce the threat of further contamination.

Entire Site In June 1993, following the completion of an extensive site-wide investigation and a public comment period, EPA selected a remedy to address the contaminated soil and groundwater. This decision was memorialized in a Record of Decision (ROD) issued in July 1993. The remedy included the use of a soil vapor extraction (SVE) system with carbon controls as well as a system of groundwater extraction wells connected to an air stripper. During the design phase, the area of contamination was divided into 2 phases. The first area, known as the Phase IA remediation, which contains the majority of the TCE and toluene contamination, has been designed and constructed as of November 1998. Operation of the Phase IA remedial system began in December 1998. An evaluation of remedial progress was completed in the fall of 2003. EPA made the determination that the SVE system operated successfully and could be turned off with minimal impact on the future operation of the groundwater system.

Enforcement HighlightsIn 1986, the Connecticut Department of Environmental Protection issued an Abatement Order, requiring Linemaster to develop a plan for a hydrological study to determine the nature and extent of contamination. In 1987, Linemaster and the EPA entered into a Consent Order requiring the company to provide bottled water to affected residences, monitor residential wells, and conduct a hydrogeologic study. The work required by the 1993 ROD, is being implemented by a 1994 Consent Decree with Linemaster. An Explanation of Significant Differences (ESD) to the ROD allowing the SVE system to be turned off, was signed by EPA in December 2004.

Environmental Progress
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Initially, supplying bottled water to affected residents and Linemaster Switch Corp. employees and installing a groundwater extraction and treatment system has reduced the potential for exposure to hazardous substances in the drinking water. During 1993, the existing groundwater extraction and treatment system contained the contaminated groundwater plume within the Linemaster property boundaries. Since that time, TCE in off-site residential wells has not exceeded drinking water standards. The first phase of remedial construction was constructed, and became operational in December 1998.

Current Site Status
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The site remedy, which was memorialized in a July 1993 ROD, included a soil vapor extraction (SVE) system which became operational in 1998, and a groundwater extraction and treatment system which also became operational in 1998. EPA recently completed a performance evaluation of both systems in the fall of 2009, which indicated that the site is protective of human health and the environment. Treatment of the contaminated groundwater continues. Long-term groundwater and surface water monitoring will continue until the cleanup goals have been achieved.

Site Photos
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Links to Other Site Information
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Disclaimer Instructions about PDF

Newsletters & Press Releases:
Press Releases about this project  

Federal Register Notices:
Final NPL Listing  

Reports and Studies:
Five Year Review Report, May 2004  
Preliminary Close-out Report, March 2005  
Second Five Year Review Report, September 29, 2009 (4.14 MB)  
Draft Remedial Investigation/Feasibility Study (RI/FS), Remedial Investigation Report Volume 1 of 5, December 1, 1992 (22.7 MB)  
Draft Remedial Investigation/Feasibility Study (RI/FS), Feasibility Study Report Volume 2 of 5, December 1, 1992 (62.1 MB)  
Draft Remedial Investigation/Feasibility Study (RI/FS), Feasibility Study Report Volume 3 of 5, December 1, 1992 (41.7 MB)  
Draft Remedial Investigation/Feasibility Study (RI/FS), Feasibility Study Report Volume 4 of 5, December 1, 1992 (12.8 MB)  
Draft Remedial Investigation/Feasibility Study (RI/FS), Feasibility Study Report Volume 5 of 5, December 1, 1992 (15.7 MB)  
Interim Remedial Action Report - Operable Unit 01 - Source Control, July 20, 2011 (744 KB)   
Addendum to Second Five-Year Review Report, August 29, 2012 (3.42 MB)  
Third Five Year Review Report, September 25, 2014 (4.36 MB)  

Decision Documents:
View Records of Decision (RODS) on-line (EPA HQ)  
Explanation of Significant Differences, Operable Unit 1, December 13, 2004 (705KB)  
Institutional Controls at this Site  

Other Links:
NPL Site Narrative at Listing:  
Site Progress Profile  

Site Repositories
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Woodstock Town Hall, Route 169, Woodstock, CT 06281

OSRR Records and Information Center, 1st Floor, 5 Post Office Square, Suite 100 (HSC), Boston, MA 02109-3912 (617) 918-1440


Contacts
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EPA Remedial Project Manager: Leslie McVickar
Address: US Environmental Protection Agency
5 Post Office Square, Suite 100
Mail Code OSRR07-4
Boston, MA 02109 - 3912
Phone #: 617-918-1374
E-Mail Address: mcvickar.leslie@epa.gov

EPA Community Involvement Coordinator: Rudy Brown
Address: US Environmental Protection Agency
5 Post Office Square, Suite 100
Mail Code ORA01-1
Boston, MA 02109 - 3912
Phone #: 617-918-1031
E-Mail Address: brown.rudy@epa.gov

 


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Last updated on Thursday, October 16th, 2014
URL: http://www.epa.gov/region1/superfund/sites/linemaster