Mount Ascutney CRC presents Brownfields plan; owner, program select encapsulation for 100 River Street
Mount Ascutney Regional Commission presented cleanup alternatives for PCB-impacted materials at 100 River Street and the owner and Brownfields program selected an encapsulation/barrier approach (epoxy coating, new concrete overlay, vapor-barrier-backed drywall). Public comments accepted through Oct. 2, 2026.
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David Johnson of the Mount Ascutney Regional Commission presented cleanup options for the PCB-impacted interior of 100 River Street and identified encapsulation/barrier as the preferred alternative. Johnson said the selected approach uses a two-layer epoxy coating, four inches of new concrete with a vapor barrier, and vapor-barrier-backed drywall to reduce exposure risk while enabling faster re-occupancy and lower cost than full removal.
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