09/18/2025 CONSERVATION COMMISSION Minutes

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Town of Mashpee Conservation Commission 16 Great Neck Road North Mashpee, MA 02649 (Steven Cook, Sandi Godfrey, Paul Colombo, Richard Sahl) NOI 2 Bayview Road, Peter & Rachel Vande Rydt. Proposed Raze and Rebuild Single-Family Dwelling with Septic System Upgrade (Representative: Cape & Islands) 43- 3364 • Represented by Raul Izardi of Cape and Islands Engineering, proposed to raise and rebuild existing single-family dwelling and upgrade the septic system. The project includes a denitrifying septic system and affects wetland resources located within 150 feet of the property, specifically a salt marsh, a coastal bank, and land subject to coastal storm flowage on an abutting property. Although the site itself is not in a flood zone, approximately 25 square feet of the proposed back deck falls within the 150-foot buffer zone. • Mr. Izardi explained that this encroachment would require mitigation. Fifty square feet of mitigation planting was required, and the applicants proposed 54 square feet, equating to four or five shrubs. In addition, the plan reduces the lawn area by approximately 1,400 square feet, lowering nitrogen levels from 15 ppm to 12 ppm. The proposed septic system meets Title V requirements, with a setback of 134 feet from the salt marsh, exceeding the state's 100-foot minimum. • Ms. Godfrey questioned the accuracy of the project narrative, noting it listed the existing house as a one-bedroom being replaced with a four-bedroom,yet claimed there was no increase in flow. Mr. Izardi admitted this was a mistake and confirmed there would indeed be an increase in flow. She also raised concerns about the absence of groundwater elevation data in the soil logs. Mr. Izardi clarified that while groundwater was not encountered at this property, adjacent site testing indicated the system would sit more than five feet above groundwater. • Discussion also turned to two oak trees on the property. One oak, split and leaning, would likely need to be removed for safety reasons, while the other along the fence line would remain. Commissioners also inquired about the pavers in front of the property, though details on whether they would be pervious or impervious were not available. Questions were also raised regarding lawn restoration over the septic system, with Mr. Izardi confirming lawn would be restored but subject to the condition that no more than 10% of the lot or 1,000 square feet be maintained as lawn, consistent with regulations. • The Commission confirmed that the septic's location in the rear of the property was preferable to placing it under hardscaped areas, given oxygen availability to the soils. MOTION: To close and issue an Order of Conditions for 2 Bayview Road including limiting lawn to no more than 10% of the lot, requiring two(2)years of monitoring for the 54 square feet of mitigation planting, and implementing standard lawn restrictions. Motion by: Richard Sahl Seconded by: Sandi Godfrey Vote: Motion passed by unanimous vote. (Steven Cook, Sandi Godfrey, Paul Colombo, Richard Sahl)