National Grid is committed to remediating the Site in a safe and prudent way, and in full accord with relevant Massachusetts environmental regulations (known as the Massachusetts Contingency Plan) and federal and state permit requirements. After evaluating various technologies, we have developed a cleanup approach that is effective, timely, and feasible. As part of the cleanup, we will:
- Remove soil from the upland areas, and sediment from the harbor, and transport them to an off-Site facility for proper treatment and disposal.
- Build a new seawall to serve as a barrier between coal tar in the soil and the harbor.
- Pump DNAPL from the groundwater and transport it off the Site for proper disposal.
- Cap some of the park, and some of the harbor sediments.
- Place deed restrictions where appropriate for long-term maintenance of the caps.
- Manage deep soil conditions at the Site.
We have submitted our studies and plans to the Massachusetts Department of Environmental Protection (MassDEP) and to other federal, state, and local permitting agencies. For more information on the remediation plans, please click here, and for more details on the permits and approvals that we have obtained, please click here.
We will continue to engage the community and keep all stakeholders apprised of remediation plans and activities, and we welcome feedback from the community regarding National Grid’s selected approach.