ConsCom approves Woodhaven Farm/Prospect St. trail, boardwalk

01bMap WoodhavenLocus
Woodhaven Farm is located on Prospect Street near the Concord border. The new public trail will follow an easement along the perimeter of the property and join the trail system in the town’s Davis Corridor. (Map adapted by Marjorie Johnson)

A public trail and boardwalk will soon link the Davis Trail with Prospect Street. Carlisle Conservation Foundation (CCF) board member Steve Tobin described the plan at the June 7 Conservation Commission (ConsCom) meeting. The new trail will be located partly on the Davis Corridor Conservation Land. The remainder is along a trail easement which is part of the 2016 Conservation Restriction (CR) on Woodhaven Farm at 201 Prospect Street. (See map, page 4.)CCF co-holds the CR with Sudbury Valley Trustees.

CCF filed a Request for Determination of Applicability, seeking a ConsCom ruling on whether a permit for the work is needed under the state Wetlands Protection Act and the Carlisle Non-Zoning Wetlands Bylaw. The filing covers both parcels.

Tobin described the project to the ConsCom. The route is generally along the Woodhaven Farm trail easement. To avoid a large wetland, there is a loop into the Davis Corridor which includes a spur to a wild cranberry bog.

A 40-foot boardwalk is proposed between two vernal pools; water flow between them was observed in 2017. Tobin said the design of the four-foot wide boardwalk is similar to others on the Davis Corridor and “all through town.”  The joists and decking are ACQ pressure treated wood. Joists are attached to concrete bumpers that are set in the ground ten feet apart. The bumpers have imbedded pins for attaching the wood.

04aMap WoodhavenTrail
The dark line shows the location of the proposed trail from Woodhaven Farm to the Davis Corridor. (Map adapted by Marjorie Johnson)

 

CCF is also proposing four smaller “duck boards” in areas where there is seasonal drainage from Woodhaven. These are set at the side of the trail for passage during high water. The duck boards are made of the same wood as the boardwalk. Each will be 12 feet long and 20 inches wide. (ACQ is a copper-ammonium compound which makes wood resistant to biological attack. It is an alternative to CCA, chromated copper arsenate.)

Tobin said that CCF will probably have a work day and seek volunteers to help. All materials for the project will be transported by hand, possibly the day before. 

The ConsCom unanimously made a Negative Determination—that work is within a wetland resource area but will not “remove, fill, dredge or alter” the area. The decision was memorable as the board’s first ever roll-call vote, needed because Vice Chair Melinda Lindquist had joined the meeting via FaceTime. ∆