Superfund Information Systems: Site Profile

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The Walton & Lonsbury Inc. (W&L) Superfund Site is located in Attleboro, Massachusetts. Walton & Lonsbury was the location of a chromium electroplating facility that operated from 1940 to 2007. A number of chemicals and chemical compounds were used and left as waste in the operations process. From 1940 to 1970, the majority of process wastes were directly discharged into wetlands located on the southern portion of the site property via an underground pipe. After 1970, W&L used a number of different waste disposal practices including a surface empoundment and lagoon used for drying plating sludge and later a closed-loop water treatment system.  Historically, contaminants were distributed through direct discharge, disposal to a dry well, tank spills, and air emissions. Initial EPA involvement (from 2010 to 2013) consisted of stabilizing the site by removing or covering highly contaminated surface soils and sediment, and demolishing the facility. A cover system was constructed over contaminated material east of the site to prevent contaminated groundwater from upwelling to the surface. Since its designation as a Superfund Site in 2013, EPA and its contractors have been collecting data to determine how far contaminants have moved and the risks posed by these contaminants.

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What Has Been Done to Clean Up the Site?

The site is being addressed through federal and state actions.

Site investigations and planning for the site’s long-term remedy are ongoing.

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What Is the Current Site Status?

Site cleanup to date has included removal actions, or short-term cleanups, to address immediate threats to human health and the environment. In 2010 and 2011, EPA demolished the W&L facility, dismantled and removed the eight plating tanks on the property, excavated facility foundations, cleared the wooded wetland area south of the site, removed and/or treated contaminated soils, and restored all impacted properties.

Following these actions, site investigations and planning for the site’s long-term remedy are ongoing.

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