Latest NMI News
Burn Bar Used to Reduce Size of Large Equipment
A burn bar, or thermal lance, heats and melts steel in the presence of pressurized oxygen to create very high temperatures to cut large pieces of machinery. On site, the burn bar was used for size reduction for the pressure tank and 1,400 ton press as seen in the Burn Bar 2016 movie.
Ramping Up to Complete Building Demolition
Currently, we are completing a “sub-slab investigation” program, which involves drilling holes through the concrete floor slabs, and then collecting soil samples below the buildings. This information will be used to refine the scope and estimated cost for the next phase of work. The next phase of work will be the “Remedial Action,” during which the slabs and impacted sub-slab soils will be removed.
Our demolition contractor, Charter, is expected to re-mobilize to the site in late March 2016 to perform the final utility decommissioning and other preparations prior to building demolition. Building demolition is planned to commence in mid-April 2016, and is expected to continue through August 2016. After demolition is complete, the building foundations will remain in place and an impermeable cap will be installed to minimize water infiltration until the Remedial Action. To see the progress photos of the buildings ready for demolition, see NTCRA Progress.
Once building demolition activities are in full swing, up to 12 trucks will leave the site daily. Work is planned for weekdays, with truck traffic scheduled between 9:30 AM – 3:30 PM, to avoid rush hours and the period when school buses are active.
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.
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.
Last updated on April 19, 2016