01/22/2026 CONSERVATION COMMISSION Minutes

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I Town of Mashpee Conservation Commission 16 Great Neck Road North Mashpee, MA 02649 MOTION: To accept the continuance for 15 Nehoiden Road to February 5,2026. Motion b Sandi Godfrey Seconded by: Richard Sahl Vote: Motion passed by unanimous vote. (Sarah Thornbrugh, Paul Colombo, Sandi Godfrey, Seana Pitt, Richard Sahl) NOI 23 Elliot Road, Nancy Webster, et al, Trustee,Finn Family Trust. Proposed septic system Upgrade with no increase to flow. (Representative: Scott Miecile) 43- 3391 The Commission opened the public hearing for the Notice of Intent at 23 Elliott Road, which proposes a septic system upgrade with no increase in flow for an existing two-bedroom single-family residence. The property consists of an approximately 8,000-square-foot coastal lot abutting Nantucket Sound. The applicant's representative explained that the existing system consists of a single cesspool currently in hydraulic failure, located on the easterly side of the dwelling approximately 10 feet from the top of the coastal bank. The proposal would abandon and properly decommission the existing cesspool, crushing and filling it with sand, and install a new septic system in the front yard, as far from wetland resource areas as practicable. The site contains multiple resource areas, including coastal bank, VE flood zone, and associated 75-foot and 150-foot buffer zones, with much of the lot falling within these jurisdictional areas due to its small size and coastal setting. The property is also located within a Zone 11 area, requiring a system capable of achieving 19 mg/L nitrogen treatment. The proposed system includes: • A new 1,500-gallon, two-compartment septic tank • A SeptiTech STAR 0.5 nitrogen-reducing treatment unit • A 13-foot by 16.5-foot leaching facility consisting of a single 500-gallon chamber surrounded by four feet of stone Soil testing indicated no groundwater encountered, with five feet of vertical separation between the bottom of the system and groundwater. The entire system would be installed beneath the existing paved driveway, and plumbing would be reconfigured within the basement so that no trenching would be required along the easterly side of the house near the coastal bank. Nitrogen loading calculations were provided, showing a reduction from approximately 13.46 mg/L under existing conditions to 8.09 mg/L with the proposed system. Commissioners noted that the system location was appropriate given future coastal flood projections and represented the furthest feasible placement from the resource areas. Commissioners expressed support for the project, emphasizing the environmental benefit of eliminating a failed cesspool located close to a coastal resource area. Questions regarding surface restoration were addressed, with the applicant explaining that the driveway would be repaved, citing safety concerns for the elderly occupant and noting that no increase in impervious area was proposed. Staff indicated the project was straightforward and consistent with applicable regulations. No public comment was offered. MOTION: To close an issue at 23 Elliot Road. Motion b Richard Sahl Seconded by: Sandi Godfrey Vote: Motion passed by unanimous vote. (Sarah Thornbrugh Paul Colombo, Sandi Godfrey, Seana Pitt, Richard Sahl) 13