Planning board debates scope and industrial uses in Tenney Mountain overlay

Planning staff presented a revised Tenney Mountain Overlay District (TMOD) draft and the Planning Board spent substantial time discussing how the overlay would handle village-core form, PUD thresholds and allowable business uses, including manufacturing, laboratory R&D and warehousing.

The board reviewed several changes: clarifying the underlying zoning that could apply to overlay parcels, correcting older references ("PUD plan" in place of "master plan") and adding a clear requirement that a village core in a PUD must be compact and consistent with the purpose of the overlay. The TMOD draft also makes explicit that a PUD village core shall be allowed only in PUDs containing at least 250 acres.

Why it matters: the overlay creates an opportunity to accommodate higher-intensity mixed-use development in designated areas near Tenney Mountain while also obligating the planning board to evaluate impacts on topography, viewsheds and natural resources.

Key discussion points

- Village core and multifamily: Staff added language that the board can set the appropriate number of dwelling units in a multifamily building in the village core; that change responds to the limited statutory definition of multifamily in the town's general definitions (which by default limits multifamily to 6 units unless otherwise specified).

- Business uses and size limits: Several board members raised concerns about allowing very large industrial or warehouse buildings in the overlay. Molly McCann and others asked whether manufacturing or warehouse uses should include explicit size caps (for example, 30,000 to 200,000 square feet were discussed in the meeting as framing examples). Joseph noted that some high-tech employers and out-of-town examples (including a ~200,000-square-foot facility mentioned in the discussion) could require large footprints; board members asked staff to research commonly used size thresholds and to provide examples from other communities.

- Definitions and redundancy: The board identified apparent redundancy in the draft's definitions: "fractional ownership unit" and "timeshare or fractional ownership" were called out as overlapping and the staff said they would clean up the language.

- Environmental and topographic protections: Members and a public commenter, Claire McCann, raised the risk of large-scale excavation and earthmoving on sloped sites. Claire asked whether the overlay contains explicit limits on cutting or altering the topography; Joseph pointed to specific objectives in the PUD development criteria that require placement of structures on suitable sites, protection of open space and preservation of natural features, but acknowledged the draft does not include a standalone prohibition on large-scale topographic alteration beyond normal state excavation rules. Claire recommended the board consider specific language to protect existing topography; the board asked staff to review options.

Board direction and next steps

The board did not adopt any changes at the meeting. Members asked staff to research typical building-size limits and definitions for manufacturing, warehouse and R&D uses in comparable communities, and to return with suggested language clarifying village-core boundaries, removing redundant definitions and options that would protect topography from extensive excavation.

Ending note: The board noted that PUD-specific design objectives in the TMOD already require attention to viewshed mitigation, open-space preservation and facade articulation, but asked staff to propose more explicit topography protections and examples of building-size thresholds for board review.