The Hatheway and Patterson Company (HPC) site, a 40 acre former wood preserving facility, is located in a mixed residential and industrial area in Mansfield, MA, approximately 30 miles south of Boston, MA. HPC began wood treating operations at the property in 1953, although it had owned the facility since 1927. Operations between 1927 and 1953 are not known. HPC historically used various methods and chemicals to treat wood on the site. Dioxins, furans, arsenic, chromium, copper, phenols (including pentachlorophenol (PCP)), and polycyclic aromatic hydrocarbons (PAHs) were released into the Rumford River, impacting fisheries, wetlands, and groundwater, potentially affecting nearby municipal and private drinking water wells.
Current Site Status and Cleanup Actions to Date
- A Remedial Investigation (RI) of the site began in October 2002. Fieldwork continued through 2004.
- In 2002, EPA removed arsenic contaminated soil from along Country Street.
- In December 1993, EPA conducted a removal cleanup action to address problems at the HPC site. Upon initiating the Removal Action, EPA found several buildings that contained large tanks, process vessels, drums, sumps, pits, and various small containers.
- Outside the property, EPA found three drip pads, treated lumber storage areas, three above ground tanks containing phencyclidine (PCP), another tank containing fuel oil, three tanks containing Dricon(tm) in water, and six underground storage tanks. EPA removed over 50,000 gallons of wastewater during this action while an undetermined amount of contaminated soil remains at the site.
Current Funding Status
- To date, EPA has spent approximately $4 million for Removal Actions and Remedial Investigation work at this site. EPA has not yet completed the design of the cleanup plan, and therefore, construction funding was not needed in Fiscal Year 2004.
- EPA's actions taken to date have considerably lessened the potential for human health or environmental exposure. EPA has determined that this site does not pose an immediate threat to human health, and will continue to monitor this site for changes that may trigger additional action.
- If additional Removal Actions are necessary, EPA will consider funding for this site in Fiscal Year 2005. Otherwise, EPA plans to proceed with the Remedial Investigation/Feasibility Study (RI/FS), which has been funded, followed by a ROD outlining any necessary Remedial Actions.
For more information on the projects at this site, please read the Hatheway & Patterson Fact Sheet on the Region 1 Superfund Web site.
- Removed existing tanks, structures, equipment, and liquid waste; covered existing contaminated soil hot spots with an asphalt cover to address immediate threat.
- Removed contaminated soils outside the fence to control exposure to nearby residences.
- Investigated the contamination of soil, groundwater, and impacts on environmental receptors. EPA's cleanup plan, or Record of Decision (ROD), will be published soon.