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Latest NMI News Recent Documents

EPA working on Action Memorandum for New Non-Time-Critical Removal Action

EPA is working on an Action Memorandum for another Non-Time-Critical Removal Action (NTCRA), which will address 1, 4-dioxane in groundwater. EPA, MassDEP, and Respondents have been working together to identify the key elements for the design of the NTCRA for 1,4-dioxane in groundwater, which generally includes further delineation of the extent of 1,4-dioxane above regulatory limits in overburden and bedrock groundwater, performance of an “aquifer pump test” in order to obtain necessary hydrogeologic data for system design (e.g., locations and pumping rates for extraction wells to capture the 1,4-dioxane plume), and performance of one or more treatability studies to evaluate potentially applicable technologies to remove 1,4-dioxane from the extracted groundwater.  Further delineation is likely to occur later this spring, before the Action Memorandum is issued.

Material Staged for Next Off-Site Shipment

Building D- Overview with former offices

Building D- Overview with former offices

Due to weather complications, schedule issues, and container availability, the scheduled off-site shipping campaign moved from April to early May. As shown in the above photo, interior walls and material are staged for disposal.

Interior Building Demolition Near Completion

Building A- Second floor

Building A- Second floor

Interior building demolition is essentially complete with the removal of the non-structural walls. Initiating HEPA vacuuming of the surfaces to remove dust and adding an application of “lock down agent” to further control dust. Anticipate building demolition to begin Summer 2015. For more progress photos, see NTCRA Progress.

Community Involvement  Recent Documents

CREW and 2229 Main Street met with Agencies on site on 17 March 2015

Public groups and de maximis met with the Agencies on 17 MAR 2015 on site to discuss the NTCRA status and schedule for building demolition as well as the planning for the remedy for 1, 4-dioxane in groundwater. The 2229 Main Street Committee provided an update to the Town’s approach to potentially taking the Site.

Public Meeting Presentation 12 NOV 2014

USEPA presented the Proposed Remedial Action Plan for the NMI Superfund Site last night at 6:30 pm  at the Concord Town Hall Meeting Room at 22 Monument Square, Concord, MA. To download a copy of the presentation, click here.

Last updated on April 15, 2015