Conservation Commission Agenda (linked)

FIFTEEN ROPE FERRY ROAD WATERFORD, CT 06385-2886
PLANNING & DEVELOPMENT
Date: December 2, 2025
To:
Mike Ott, P.E., Summer Hill
Civil Engineers & Land Surveyors, P.C.
From: Maureen FitzGerald, Environmental Plamney7
Re:
Inland Wetland Application #C 25-15: 33 Kenyon Road
Application Review Comments:
The following comments are provided based on the original application materials and revised site plans
forwarded to this office on November 17, 2025
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The proposed construction impacts 470 sq. ft. of inland wetland area. Please provide a discussion of
alternatives considered to avoid or reduce wetland impact and measures considered to mitigate for
unavoidable wetland impacts. The Conservation Commission will need to evaluate the impacts to
determine if the proposal involves a significant wetland impact activity per Section 2.32 of the
regulations.
Provide hydrologic calculations for post-development water quality volume and basin capacity.
Per CT DEEP Stormwater recommendations, incorporate a forebay area in the stormwater basin.
To minimize potential erosion of the basin berm and sedimentation impacts to the adjacent wetland,
can an armored rip-rap outlet be added to the basin berm which directs the discharge to the upland
area.
The stormwater treatment basin is proposed as an infiltration basin. Based on prior test pit data for
this parcel, seasonal water table is 2 to 2.5 ft below grade in the vicinity of the basin. It is likely the
basin will exhibit seasonally saturation. To facilitate inspection and maintenance, staff recommends
the proposed basin plantings be located east of the berm rather than within the basin interior.
Include topsoil in the biofiltration media mixture and decreased compost percentage to promote
establishment of seed mixture and vegetative cover. Soil media recommendations from the
University of New Hampshire Stormwater Center publications 2016 and 2020 recommend thicker
soil media depth and reduced compost component.
The ESC plan for project construction should include proposed stockpile locations and proposed
temporary sedimentation barriers for the stormwater basin during construction.
A Site Stormwater Management narrative is required per Section 25.6 of the zoning regulations. The
operation and maintenance schedule should address the timing and frequency of inspection and
maintenance tasks for the stormwater treatment system and LID components.
The final plan requires the signature of the wetland /soil scientist responsible for the wetland
boundary delineation
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