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Conservation Commission · October 20, 2025 · 6:30 PM

Conservation Commission Special Meeting

Approved a Notice of Intent for a project on Main St with a condition that work be completed in the dry per the applicant's work plan. Continued the National Grid temporary power station proposal for 0 & 14 Mill St to the November meeting for peer-review selection and review of revised stormwater/geotechnical materials.

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Key decisions
Approved the Notice of Intent for the Main Street project subject to standard conditions and the supplemental project narrative (including a condition that work be completed in the dry per the submitted work plan).
Approved 6-0
AI SUMMARY · DRAWN FROM THE TRANSCRIPT

The Conservation Commission held a special hearing with two main items: a continued Notice of Intent for a Main Street project and a continued review of National Grid’s temporary power station (0 & 14 Mill St). The commission approved the Main Street NOI unanimously, adding a specific condition that work be completed in the dry according to the applicant’s submitted work plan and incorporating the measures described in the supplemental project narrative (October 15). Commissioners noted NHESP input had been considered and expressed support for accommodating timely, compliant applicant responses through special hearings when needed.

The National Grid application was continued to the November meeting to allow time for peer-review proposals and for the applicant to submit revised plans and a full stormwater management report. National Grid staff reported they received a DEP tracking number and no DEP comments on the NOI; engineering staff reported ongoing geotechnical concerns, including soil voiding and subsidence near a lower retaining wall adjacent to the Pow Wow River, and monthly monitoring since May 2022. The commission’s staff reported outreach to peer-review firms but no contract quotes yet; commissioners and staff named potential peer reviewers (including TEC Engineering Corp and Lucas Environmental) and agreed the stormwater review will be necessary. There were no substantive public comments recorded during this meeting.

Generated by an LLM. Verify against the official record before quoting.

Points of interest

Peer-review procurement and timing for temporary power station
Peer-review procurement and timing for temporary power station
OTHER
0:08:12–0:10:30 ▶ Watch
Staff reported difficulty obtaining contract quotes from peer reviewers for the proposed temporary power station; commissioners and staff named several potential peer-review firms and discussed the need for a stormwater-focused review and more time to gather proposals.
Project update on subsidence and soil stability at substation site
Project update on subsidence and soil stability at substation site
PRESENTATION
0:11:47–0:14:43 ▶ Watch
Engineers presented recent monitoring results for the substation site showing soil voiding and localized subsidence near the lower retaining wall adjacent to the river, noting probes found increased depth in concerning locations and a loss of soil stability that is being monitored monthly.

Motions & votes

AI-generated summaries of each motion's substance — not the official record. Verify against the meeting minutes or video before quoting.

@ 0:03:38 · APPROVE
Approved 6-0
I will entertain a motion to approve the NOI subject in addition to the standard conditions to those specified in the supplemental project narrative of October 15th.
MOVED · BOB MANSO · SECONDED · COMMISSIONER FALLON
@ 0:17:44 · CONTINUE
Approved 6-0
Motion to continue the hearing on this NOI until our November meeting.
MOVED · COMMISSIONER MCCARTHY · SECONDED · COMMISSIONER FALLON
@ 0:19:10 · OTHER
Approved unanimous voice vote
Motion to adjourn.
UNDER · Adjournment