The U.S. Environmental Protection Agency (EPA) plans to conduct comprehensive reviews of site cleanups at four National Priorities List Superfund sites, including a federal facility, in New Hampshire by performing required five-year reviews of sites.

The federal Superfund program, established by Congress in 1980, investigates and cleans up the most complex, uncontrolled or abandoned hazardous waste sites in the country and endeavors to facilitate activities to return them to productive use.

The four sites are Sylvester, Nashua; Tinkham Garage, Londonderry; New Hampshire Plating Co., Merrimack (five-year review to be completed in fiscal year 2020); and Pease Air Force Base, Portsmouth/Newington.

Community members and local officials are invited to contact EPA with any comments or concerns about a Superfund site.

The EPA is actively involved in Superfund studies and cleanups at 22 sites in the state. Among phases of the cleanup process are consideration for future use and redevelopment.

Once the five-year review is complete, a report of its findings will be posted to the websites. Most of the reviews will be completed in 2019, but some noted below will not be completed until Fiscal Year 2020.

The review process “Is a vital component of our Superfund partnership with EPA, helping to ensure that cleanup actions withstand the test of time at these challenging sites,” said N.H. Department of Environmental Services Commissioner Robert Scott.