Conservation Commission — June 9, 2026

The Chair presented the minutes for two previous meetings. Some commissioners noted they had not yet reviewed them, but a motion was made and seconded for both.

Both the April 14th and April 28th minutes were approved.

Staff noted a minor issue where mowing occurred beyond the phenomarkers. The environmental consultant provided photos showing that the homeowners had since instructed landscapers to fix the issue and let the area go fallow.

The Commission approved a full certificate of compliance.

The Commission reviewed the site visit and additional plantings that had been installed as requested by staff prior to the visit.

The Commission approved a full certificate of compliance.

Staff expressed concern that erosion controls were removed and landscaping might have filled the floodplain. The engineer presented an as-built plan showing that the 179.4 elevation contour remains unchanged and no significant filling occurred.

The Commission approved a full certificate of compliance, pending Karen Mullins' review of the updated surveyor's documentation.

Karen Mullins to review the updated surveyor's submission to confirm floodplain elevations.

The project involved an infiltration system built too shallowly in 2017. The engineer provided a mounding analysis showing the system would not be impacted by a 100-year storm, and the Town Engineer had previously agreed with this analysis.

The Commission approved a full certificate of compliance. A discussion occurred regarding the return of a $5,000 bond.

Staff to look into the status/location of the $5,000 bond mentioned by the engineer.

The applicant requested a partial COC because certain monitoring components require several years to satisfy. There was a minor deviation regarding the footprint of an infiltration bed due to a gas line, and questions arose regarding whether inspection ports were at grade.

The Commission approved a partial certificate of compliance, to be held until staff confirms the inspection ports and drain basins are properly positioned.

Staff to verify that the inspection ports and drain basin are at grade/correctly installed.

The project involves renovating a softball field on a capped landfill. Proposed changes include moving the field 32 feet away from the wetland and adding a shallow stone trench for runoff. Concerns were raised about the landfill cap integrity and the type of surface materials used.

The Commission issued a negative determination of applicability with conditions.

The project is outside the 100-foot buffer but impacts drainage due to increased impervious surface. The applicant proposed an additional underground leach field chamber.

The Commission issued a negative determination with the condition that construction cannot start until the Town Engineer verifies the drainage design.

Town Engineer to review and verify the drainage system/stormwater report.

The applicant presented a revised concept plan that reduces the unit count and pulls development further from the vernal pool habitat and ILSF buffer. A significant discussion occurred regarding the National Park Service's legal interest in the property as a single-family dwelling site and its status within a Historic District. Public commenters expressed concerns about tree loss, invasive species (honey locust), and climate-resilient plantings. Public members expressed concerns regarding tree removal affecting endangered bats, chemical use by new residents, and the impact on viewsheds. Commission members debated the adequacy of the 100-foot buffer and the distinction between historic site integrity and wetland protection jurisdiction.

The hearing was continued to July 14th. The Commission determined they required more data and a revised plan to address specific concerns regarding planting density and species.

The applicant to revise the restoration plan to include more definitive boundary markers (e.g., boulders or fences) and address public concerns regarding plantings. Submit revised plans and additional data by 2026-07-02.

The homeowner (Yousef Sami) admitted to clearing invasive vegetation and installing lawn without a specific permit, but proposed a robust native planting buffer as a remedy. The Commission debated the specifics of the restoration plan, including the number of species, tree/shrub counts, and the use of 'Feno' markers and boulders to delineate the wetland edge.

The Commission requested a revised plan that incorporates their suggestions for higher species diversity, increased plant counts, and permanent boundary markers.

The matter is continued to June 23rd, with a revised plan due by June 16th.

Peer reviewers confirmed that the applicant (SMMA) addressed previous comments regarding stormwater BMP design and pollutant loading. Public commenters raised concerns about whether the project should be redesigned to avoid wetlands entirely (Wetlands 7 and 8) and the long-term viability of the proposed mitigation.

The peer reviewers expressed confidence in the current responses, and the Commission moved to close the hearing.

The Commission will conduct a site visit on June 16th and meet again on June 23rd to work through conditions of approval.