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Latest NMI News Recent Documents

NTCRA Building Demolition Complete

The work under the Building NTCRA is now substantially complete with all demolition and off-site disposal of building debris finished. Placement of a liner cover over the demolished building sites to prevent rainwater infiltration prior to the start of the final remedial action is also complete, as shown in the August 2016 aerial photo. An updated photo log for July and August 2016 demolition activities can be found here. More photos on building demolition can be found on NTCRA Progress.

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12AUG2016 Aerial photo looking west showing liner placed over former building sites.

Site Overview, Looking North-west, 16 JUN 2015

June 2015 Site overview looking northwest.

Building Demolition Nearing Completion

Building E Mezzanine Demolition

Building E Mezzanine Demolition

Demolition of Building A, the final building structure to be demolished, began last week and is approximately 50% complete. Building E demolition is complete and placement of liner over the slab is nearly complete. For a summer demolition update, see Demo Progress 24JUN – 7 JUL 2016.

Buildings Demolished

Buildings B, B4, C and D have been completely demolished. The liner has been placed over the former Building D location and demolition continues towards the south end of Building C. The demolition crews have removed about half of Building E and are continuing demolition this week. Building A will be the final building removed. For more photos on demolition, see NTCRA Progress.

3JUN16 Aerial

Community Involvement  Recent Documents

Site Meeting on Building and Groundwater NTCRAs

On 31AUG 2016, representatives from EPA, MassDEP and de maximis met with members of the 2229 Main Street Committee, CREW, and Green Acton, as well as representatives of the Town of Acton and Acton Water District to present an update on the Building and Groundwater Non-Time-Critical Removal Actions (NTCRAs).

The Groundwater NTCRA AOC became effective in July 2016. Between October 2015 and July 2016, significant further delineation of the extent of groundwater contamination was completed. The next steps under the Groundwater NTCRA will be installation of pumping and monitoring wells, hydraulic testing, and design and construction of an ex-situ groundwater treatment system.

EPA Issues Fact Sheet on NMI Activities Update

In light of building demolition resuming on 19APR16, EPA issued a fact sheet to update on the status of activities on site and the various winter activities performed for the test of the Assabet 1A and 2A production wells to define the “capture zone,” which will assist in determining an effective location to install and test a pumping well.

Last updated on September 1, 2016