Technical Review Committee
TRC reviewed updates on the Rocky Hill development at 265 R, 277 R, 281, 287, 287 R, and 287.5 Elm St. (site layout, stormwater, wetlands, trails, and fire/traffic access) and National Grid’s proposed expansion of the substation at 9 Alenclair Drive (site footprint, screening, fencing, lighting, and access).
The Technical Review Committee heard detailed project updates for two major applications. The Rocky Hill Development (265 R, 277 R, 281, 287, 287 R, 287.5 Elm Street) team presented refinements since their pre‑application: the overall layout remains, the southern neighborhood is evolving with about 85 units, the northern neighborhood includes 27 rental buildings and marked parking, and a divided boulevard with a roundabout provides primary access. Discussion focused on stormwater design (infiltration chambers under pavement, basins, and regrading/fill), wetland permitting timing (likely an early‑November Conservation Commission submission once the southern layout is finalized), utility stubs and looping, trash collection logistics, trail layout and maintenance/coordination with Conservation, fire access confirmation, snow storage, EV/handicap parking conflicts, and potential impacts to historic homes at the entrance. TRC members requested clearer plans for wetland flagging, trail alignment, trash enclosures relative to resource areas, snow storage locations, and detailed planting/noise/visual mitigation; the applicant noted ongoing work with the Design Review Committee and DPW and expects another DRC meeting and plan revisions before resubmitting materials for peer review at the Planning Board stage.
The committee also reviewed National Grid’s proposal to expand the existing substation at 9 Alenclair Drive (Massachusetts Electric Company). The project replaces equipment, adds a control house and two transformers, and expands the fenced yard footprint substantially. TRC discussion covered screening and landscape buffer design, preservation of existing trees where feasible, fence details (height and barbed wire), driveway/access widths, gravel and pervious surface construction, the site’s drainage characteristics (small depressions that currently drain to a dry well), absence of battery energy storage, required sanitary provisions, lighting (dark‑sky compliance), and anticipated sound reductions with modern transformers. Committee members urged stronger visual mitigation (larger/wider‑canopy trees, multiple planting rows), careful coordination on potential tree removals, and detailed lighting and fencing specifications for the Planning Board submission. No substantive project approvals or denials were voted at this TRC meeting; the Planning Board process and peer review were noted as next steps.