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Hillsborough conservation panel raises wetlands, stormwater concerns for proposed Myrtle Street subdivision

Hillsborough Conservation Commission · December 23, 2025
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Summary

The Hillsborough Conservation Commission reviewed a Myrtle Street subdivision application and unanimously authorized its chair to research DES rules and submit comments after raising concerns that a proposed detention pond and increased impervious area could harm multiple wetlands and worsen 50- and 100-year storm impacts.

The Hillsborough Conservation Commission on Dec. 23 reviewed a Planning Board request for comment on a subdivision application for Myrtle Street and raised concerns that the proposal could harm several wetlands and increase stormwater risks. The commission unanimously authorized Chair Richard Head to research regulatory requirements and file comments on the town’s behalf.

Chair Richard Head said the commission examined plans for the proposed subdivision (identified in the application as M 11P, L 191 & M 23, L 113) and noted similarities and differences with an earlier plan. Members focused on a proposed stormwater detention pond on the western portion of the property and an isolated wetland adjacent to the roadway, and also flagged wetlands on the eastern parcel.

Commissioners said the development’s increase in impervious surface could place additional strain on the wetlands—particularly under 50-year and 100-year storm scenarios—and raised questions about who would hold and maintain the drainage easement and associated infrastructure. The commission discussed whether using wetlands for stormwater control would require a wetlands permit under applicable rules, and suggested potential conditions including prohibition of future dredging or filling and use of silt fencing during construction.

Roger Shamel moved to authorize Chair Richard Head to submit comments to the Planning Board expressing the commission’s concerns; Linda White seconded and the motion passed 6-0. The commission also voted 6-0 to authorize Head to research "DES rules & 50 year flood plains" and to include that information in his comments, and to authorize Head or his designee to speak on behalf of the commission at any public hearing on the application.

The commission tabled other correspondence until its Jan. 13, 2026 meeting. In old business, Vice-Chair James McDonough reported that a separate Jones Road subdivision proposal had been approved by the Planning Board. The meeting adjourned at 7:45 p.m.

What happens next: Chair Richard Head is authorized to gather the requested regulatory information and to submit an advisory comment and, if necessary, to represent the Conservation Commission at the Planning Board hearing.