WATCH: Olin Superfund Site EPA Cleanup Plan Presentation

WILMINGTON, MA — The Environmental Protection Agency presented details on its $48 million proposed cleanup plan for Wilmington's Olin Superfund Site, at a recent virtual information session.

The Aug. 25 public information session opened the plan's month-long public comment period. The Agency will hold a formal public comment hearing Sept. 22, in addition to taking comments by mail, email and voicemail.

The slideshow for the information session is available here.

The $48 million tag is an estimate by the agency.

The plan's highlights include:

• New groundwater extraction and treatment systems, to clean the aquifer
• Collect and treat oily waste and contaminated groundwater that flows into surface water
• Build "cap and cover systems on areas of soil contamination that pose an unacceptable risk," including the Olin site's "Containment Area"
• Excavate contaminated wetland soil and sediment and restore impacted wetlands and floodplains
• Require additional evaluations and engineering controls for future buildings
• Further studies on bedrock and groundwater contamination
• Land use controls
• Long-term water monitoring

Residents can submit comments to a voice mailbox at 617-918-1880 or mail or email them to:

Melanie Morash
U.S. EPA Region 1 – New England
Mail Code 7-4
5 Post Office Square
Boston, MA 02109-3912
E-mail: morash.melanie@epa.gov

Christopher Huffaker can be reached at 412-265-8353 or chris.huffaker@patch.com.