The EPA recently provided a community update on the Olin Chemical Superfund Site:
Community Update (September 2022)
Olin Chemical Superfund Site – Wilmington, Mass.
WILMINGTON, MA — This past spring, EPA conducted a series of interviews to further understand community members’ concerns. The feedback received will help inform the Agency’s Community Involvement Plan (CIP), which will guide EPA’s community involvement process. EPA aims to have a draft CIP completed this fall for public review and comment.
Under EPA oversight, Olin collected additional data to fill data gaps. Such data helps determine the depth and shape of bedrock, ultimately improving the effectiveness of future remediation. This data is currently being evaluated. Additional data collection will occur in spring 2023.
In May, Olin began a study to evaluate treatment options for groundwater contaminated with “Dense Aqueous Phase Liquid” (“DAPL”). Olin collected and mixed 200 gallons of contaminated groundwater and DAPL for use in the study. In August, EPA and MassDEP approved Olin’s proposal to move forward with treatability testing on the DAPL/groundwater mixture.
EPA and MassDEP continue negotiations with the Potentially Responsible Parties (PRPs) for the site, with the goal of reaching an agreement (a Consent Decree) to conduct or finance the cleanup actions selected in EPA’s March 2021 Record of Decision.
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