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Carlisle commission approves septic and renovation at 343 Bedford Road with drainage condition
Summary
The Carlisle Conservation Commission voted 3–1 to approve renovations and a new septic system at 343 Bedford Road, conditioned on adding a flared-end detail for a proposed area drain and placing restrictions prohibiting construction vehicles or stockpiling in the 100-foot wetland buffer.
The Carlisle Conservation Commission on Tuesday approved a plan to renovate the dwelling at 343 Bedford Road and install an upgraded sewage disposal system, voting to require an added drainage detail and site‑specific conditions to protect bordering vegetated wetlands.
Paula Kurtner of Stampsky & McNary, representing the applicant, told the commission the proposed system includes a septic tank, pump chamber and advanced leach field; the leach field and most building work are outside the 100‑foot buffer, but two septic tanks and a small area drain would be inside it. "This septic system has been reviewed and approved by the board of health. So we do have a permit from them to construct the system as shown on this plan here," Kurtner said.
Commissioners pressed developers on the area drain proposed inside the buffer and whether it constituted a prohibited point‑source discharge. Commissioners also asked where construction vehicles and material stockpiles would be staged. The applicant said access would be from the north, that tanks would be installed first and that stockpiling was planned outside the buffer. Conservation administrator Megan Sullivan recommended adding a special condition forbidding construction vehicle activity and stockpiling in the buffer zone.
After discussion, the commission moved first to delay the decision to obtain added detail; that delay motion failed for lack of a second. The commission then approved the plan as submitted, conditioned on the applicant adding a design detail for the flared‑end drainage outfall and on a sight‑specific special condition limiting construction access and stockpiles in the buffer. The roll‑call vote was Sylvia Willard yes; Brian Murphy no; Melissa Webster yes; Chair George Shepard yes. The applicant agreed to add the requested detail to the plan.
The commission also asked staff to confirm in writing how roof drainage, erosion control and final site stabilization would be handled before construction begins. If the applicant later seeks septic changes that would alter flow or capacity, the project may require additional review.
Next steps: the applicant will submit an updated plan with the flared‑end drainage detail, and staff will draft the special condition limiting vehicle access and stockpiling inside the buffer.
