OLD SOUTHINGTON LANDFILL
On this page:
- What Is Being Done to Clean Up the Site?
- What Is the Current Site Status?
- EPA’s Involvement at the Site
- Activity and Use Limitations
- Operable Units (opens new page)
- Cleanup Progress (opens new page)
The 11-acre Old Southington Landfill site is located in Southington, Connecticut. A municipal disposal area operated on site from the 1920s until 1967, when it was closed. Between 1973 and 1980, the landfill was subdivided and sold for residential and commercial development. After adding the site to the Superfund program’s National Priorities List (NPL) in 1984, EPA assessed conditions and determined that contamination does not currently pose an immediate threat to area residents or the surrounding environments, and no emergency actions are necessary. An interim remedy addresses all contaminated media except for groundwater. A final remedy has been selected to address groundwater risks, namely vapor intrusion into buildings due to contaminated groundwater emanating from the landfill. Groundwater will be monitored for at least 30 years to determine the effectiveness of the cap and overall remedy.
What Is Being Done to Clean Up the Site?
The site is being addressed through potentially responsible party (PRP) actions. Long-term groundwater monitoring is ongoing, making sure that the remedy remains protective of human health and the environment.
What Is the Current Site Status?
The site’s interim remedy included permanent relocation of all on-site buildings; construction of a landfill cap over the entire site; consolidation of a highly contaminated area in a lined cell underneath the cap and above the water table; installation of a soil gas collection system; and long-term monitoring of groundwater and soil gas. Construction of the interim remedy finished in September 2001.
Groundwater will be monitored for at least 30 years to determine the effectiveness of the cap and overall remedy.
EPA’s Involvement at the Site
The former landfill is located about 700 feet southeast of the former municipal Well No. 5, which the Town of Southington Water Department installed in 1971 as a public water supply. In 1979, the municipal well was closed because groundwater analyses indicated the presence of volatile organic compounds (VOCs) at levels exceeding state standards. The well has been permanently closed.
Activity and Use Limitations
At this site, activity and use limitations that EPA calls institutional controls are in place. Institutional controls play an important role in site remedies because they reduce exposure to contamination by limiting land or resource use. They also guide human behavior. For instance, zoning restrictions prevent land uses – such as residential uses – that are not consistent with the level of cleanup.
For more background, see Institutional Controls.
Institutional controls are required for this site.
This site requires ICs because a decision document, such as a Record of Decision, has documented some level of contamination and/or remedy component at the site that would restrict use of the site. These ICs are required to help ensure the site is used in an appropriate way and that activities at the site do not damage the cleanup components. These ICs will remain in place for as long as the contamination and/or cleanup components stay on site. The matrix below is a general summary of the restrictions at this site at the date of this report. The information in this matrix is a general description of the restrictions at the site only. The site contacts should be consulted if there are questions on the ICs for this site.
The following IC Instruments provide media-specific use restrictions that have been implemented by EPA for protecting human health, the environment and remedial engineering on this site. Instruments are documents used by EPA or other organizations to implement the use restrictions at a site. To know about other media-specific use restrictions that are planned but not implemented at this site, please contact the Regional Office using the Site Contact listed above. Note that where multiple entries occur, it will impact more than one pathway.
Click here for IC Instruments implemented for this site. https://semspub.epa.gov/src/collection/01/SC31727
ICs are generally defined as administrative and legal tools that do not involve construction or physically changing the site. Common examples of ICs include site use and excavation restrictions put in place through State and local authorities like zoning, permits and easements. ICs are normally used when waste is left onsite and when there is a limit to the activities that can safely take place at the site (i.e., the site cannot support unlimited use and unrestricted exposure) and/or when cleanup components of the remedy remains onsite (e.g., landfill caps, pumping equipment or pipelines). Effective ICs help ensure that these sites can be returned to safe and beneficial use.
Disclaimer: This information is being provided by EPA as an informational tool to further assist the public in determining the types of restrictions that may be in place at National Priorities List sites being addressed by EPA under the Superfund program. In addition to the areas addressed by the institutional controls identified on this web site there may be other areas on the property that require restrictions on use of the property that are not captured in this EPA database. States and other entities may have implemented laws or restrictions applicable to this site. The information provided herein does not replace a title search or meet "All Appropriate Inquiry" requirements. U.S. EPA encourages users to review the Site files to obtain information regarding remedy components, containment systems and the land use for which cleanup standards were selected for these sites. More information and links can be found in the Institutional Control instrument collection of document, above, and the EPA regional offices may also be contacted.
During cleanup, a site can be divided into a number of distinct areas depending on its complexity. These areas, called operable units (OUs), may address geographic areas, specific problems, or areas where a specific action is required. Examples of typical operable units include construction of a groundwater pump and treatment system or construction of a cap over a landfill.