Remediation Technology Summit

Bruce Thompson

de maximis, inc.

Bruce is a member of the Board of Directors of de maximis, inc., with responsibility for the company’s New England operations. He has more than twenty-seven years of experience managing the technical, administrative, and financial aspects of major site investigation and remediation projects. He currently serves as the Project Coordinator for work under Consent Decrees and Administrative Orders at the following Superfund sites: York Oil OU1 and OU2 (Moira, NY), Solvents Recovery Service of New England, Inc. (Southington, CT), Nuclear Metals, Inc. (Concord, MA), and Industri-plex OU2 (Woburn, MA). He is a 1985 graduate of the United States Naval Academy.

Phased Remediation at the Nuclear Metals, Inc. Superfund Site

Nuclear Metals, Inc. in Concord, MA operated 1958 – 2011, producing depleted uranium (DU) penetrators and other DU products, beryllium parts, and metal powders. The Site was placed on the NPL in 2001. The RI/FS (2003 to 2014) resulted in EPA’s 2015 selection of a $125-million remedy for soil, sediment and groundwater. Buildings were emptied, demolished and disposed off-site 2011-2016 through a $70-million Non-Time-Critical Removal Action (NTCRA). A key process step was terminating the radioactive materials license in 2011, so the site was only regulated under CERCLA. Significant cost savings were realized during the building NTCRA by packaging waste to stay under the “low-level radioactive waste” threshold (169 pCi/g). Increasing 1,4-dioxane concentrations at a municipal well resulted in the ROD including a second NTCRA to expedite hydraulic containment and ex-situ treatment. This groundwater NTCRA addressed that issue while the RD/RA CD was negotiated. On-going engagement with citizen groups established community understanding.

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