Planning Board schedules hearing on 121 Pines Road after debate over clearing, mitigation and permeable paving

Jean Vrono of Site Design Consultants represented an owner application for 121 Pines Road, describing plans to replace a deteriorated rear deck, add new stairs and a 232-square-foot extension, expand a parking area, and repair damage from prior unpermitted clearing and excavation.

Vrono told the board the contractor had removed trees and left stockpiles of stumps, wood chips and boulders in the rear yard and asked for a two-step approach: a temporary adjustment of the clearing-and-grading limit so the debris could be removed, then a formal re-establishment of the permanent limit. "We're looking to extend the clearing and grading line temporarily to that area. Once they remove everything, then now establish a new clearing and grading line," she said.

On mitigation, Vrono said the wetland-buffer acreage that must be mitigated under Chapter 64 was 6,587 square feet in their calculations and that the proposed mitigation area shown on the consultant's drawing is 12,411 square feet — about double the minimum 1.5:1 ratio the board uses. She said the applicants would correct a clerical error in one chart entry and supply documentation: "That area is 12,411 square ft. So it exceeds the 1.5 to one."

Board members pressed the applicant for plan-level clarifications. Staff and members asked that the 225-square-foot stair area be shown on the plan (not only in the coverage chart), that the original clearing‑and‑grading limit and the proposed limit be shown together on the landscape plan, and that a detail for the proposed split‑rail fence be added. Sabrina (staff) also noted that a chairman-signature block must appear on the mitigation plan and first sheet per staff guidance.

Members questioned whether the proposed permeable driveway system — described in the record as interlocking Cambridge blocks with a permeable grid sometimes called "tough turf/tough track" and referenced by a memo from Bob Sioli — should be treated as impervious for stormwater versus merely counting toward development coverage. The board asked the applicant to submit the vendor/manufacturer documentation and any memos from town consultants supporting the stormwater credit.

Planning Board member Dennis urged clear demarcation between mitigation and manicured lawn, recommended planting plugs in addition to seed to ensure establishment, and suggested modest restoration along side-yard lines as compensation where the clearing-grading limit would be redrawn. "I would say to the front side of the stone wall ... that stone wall as a good sort of bifurcation," he said, urging permanent demarcation and species selection to support long-term success.

The board also discussed whether building or the construction department could issue a short-term permit to allow removal of the large stump and rock piles while the formal permitting proceeds; no temporary access permit was granted that evening. The board voted to set a public hearing for June 17 on the assumption the applicant would submit the outstanding documentation and revised drawings in time for staff review.

Next steps: the applicant is to provide corrected coverage numbers on the plans, the requested schedule of construction truck trips if applicable, details for the split‑rail fence, and the supporting memos/letters about the permeable block system’s stormwater credit. The June 17 hearing will give the public an opportunity to comment and allow the board to consider a resolution after staff verification.