Townsend Saw Chain Co.
Site Summary ProfileEPA ID: SCD980558050
Location: Pontiac, Richland County, SC
Lat/Long: 34.106250, -080.834160
Congressional District: 02
NPL Status: Proposed: 06/24/88; Final 02/21/90
Affected Media: Ground water, Soil
Cleanup Status: Construction complete - Physical cleanup activities have been completed.
Human Exposure Under Control: Yes
Groundwater Migration Under Control: Yes
Sitewide Ready for Anticipated Use: No
Site Reuse/Redevelopment: In Continued use and reuse – industrial and commercial land uses are located on the site
Site Manager: Scott Miller (firstname.lastname@example.org)
Current Site Status
The Townsend Saw Chain Co. site includes the area where two metal products manufacturers operated from 1964 until 1981. EPA placed the site on the National Priorities List (NPL) in 1990 because of contaminated ground water and soil resulting from improper wastewater disposal. EPA, the South Carolina Department of Health and Environmental Control (SCDHEC), and Textron, Inc., the site’s potentially responsible party (PRP), have investigated site conditions and taken steps to clean up the site in order to protect people and the environment from contamination. Site contamination does not currently threaten people living and working near the site. By treating ground water, placing institutional controls on the site property and undertaking Five-Year Reviews, EPA, SCDHEC and the site’s PRP continue to protect people and the environment from site contamination.
The 50-acre site is located approximately two miles south of Pontiac in Richland County, South Carolina. The site includes several buildings and parking lots for the commercial and industrial businesses located on site. Industrial and commercial businesses border the site to the north, south and west. Undeveloped land borders the site to the east. Nearby land uses include industrial, commercial and residential uses.
In 1964, metal products manufacturing began at the site. Items manufactured included office recording equipment by the Dictaphone Corporation, Inc. and the saw chain component of chain saws by Textron, Inc. From 1964 until 1981, operations discharged wastewater on to the ground in a low-lying area next to the facility. In 1990, EPA listed the site on the NPL.
In 2002, Centerline Development, LLC subdivided the site property into 10 areas of varied sizes for commercial development. Commercial development occupies 35.5 acres of the site property’s original 50 acres. Centerline Development, LLC retains ownership of the remaining 14.5 acres. A veterinary hospital, a kennel, a hotel, an auto-body shop, office buildings, an industrial park, two retail stores, a gas station and two restaurants operate on site. AMBAC International (formerly American Bosch), a manufacturer and supplier of fuel injection equipment, currently operates at the former manufacturing facility.
Site investigations found contamination in ground water and soil that could potentially harm people in the area. Contamination resulted from handling practices of wastewater containing heavy metals and solvents. Contaminants of concern include chromium, cadmium, cyanide, nitrites, nitrates and volatile organic compounds (VOCs).
Contaminated ground water has migrated off site onto undeveloped land northeast of the site.
EPA assessed whether residents or workers might be at risk from harmful ground water vapors in buildings. EPA found that vapor intrusion did not pose a threat to residents and workers.
Investigation and Cleanup Responsibility / Oversight
Site PRP Textron, Inc. leads site cleanup activities, with oversight provided by EPA and SCDHEC.
Site Cleanup Plan
In 1994, EPA issued an interim cleanup plan (an Interim Record of Decision, or Interim ROD) for the site. The plan included the following activities:
- Planning and implementing a pre-design-phase investigation of the extent of ground water contamination.
- Constructing a pump-and-treat system to address ground water contamination.
In 1996, EPA issued the final cleanup plan (ROD) for the site. The plan included the following activities:
- Digging up and removing contaminated surface soils.
- Treating the surface soils on site.
- Sampling treated site soils.
- Digging up and removing contaminated sediments from the off-site seep area.
- Sampling the surface water of an off-site tributary.
- Continuing operation of the ground water pump-and-treat system, on-site treatment of contaminated ground water and sampling of on-site ground water.
In 2001, EPA issued an Explanation of Significant Differences (ESD) to explain why digging up and treatment of contaminated soil on site was no longer necessary.
In 2007, EPA issued a second ESD for the site to add cleanup activities to the cleanup plan. The document called for construction of a permeable reactive barrier to treat ground water contamination and prevent contaminants from reaching the off-site tributary. It also added institutional controls to restrict use of ground water as a drinking water source until the completion of the site’s ground water cleanup, to restrict site land uses to commercial and industrial uses, and to restrict land use in the off-site area to protect the permeable reactive barrier. The ESD also ended the use of the site’s ground water pump-and-treat system.
The site’s PRP conducted soil cleanup activities in 1995 and 1996, removing approximately 75 tons of contaminated soil and disposing of it off site. The site now supports commercial land uses. Institutional controls prohibit other land uses at the site.
Ground water contamination is being treated through a series of chemical injections that make the ground water non-hazardous.
The ground water pump-and-treat system operated from 1982 until 2002 and removed more than 550 pounds of chromium from the ground water. In 2000, treatment of contaminated ground water began on site as well as in the off-site area directly next to the site.
In 2009, the PRP conducted a pilot study to encourage the growth of bacteria that can break down contamination to explore whether this method could achieve the same cleanup objectives as was projected for the permeable reactive barrier. The experimental technology proved successful and was utilized along with ferrous sulfate injections to reduce the overall footprint of total chromium impacted groundwater has decreased 73% since 2008.
The site’s second Five-Year Review, completed in 2010, found that the cleanup remains protective of human health and the environment.
EPA negotiated legal agreements with the site PRP to investigate and clean up the site. The PRP continues to fund site cleanup, monitoring and oversight activities.
EPA has worked with the community and its state partner to develop a long-term cleanup plan for the site, reflecting the Agency’s commitment to safe, healthy communities and environmental protection. Community engagement and public outreach are core components of EPA program activities.
EPA has conducted a range of community involvement activities to solicit community input and to make sure the public remains informed about site activities throughout the cleanup process. Outreach efforts have included public notices, interviews and public meetings.
Ground water treatment is ongoing. EPA and the PRP anticipate that all ground water cleanup goals will be met by 2018.
EPA completed the last Five-Year Review in 2010 and plans to complete the next Five-Year Review in 2015.
EPA keeps additional site documents and information in a site information repository at the location below. EPA also posts site documents, when available, on EPA’s CERCLIS Site Profile page. For documents not available on the website, please contact the Region 4 Freedom of Information Office.
Northeast Regional Library
7490 Park Lane Rd.
Columbia, SC 29223