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HomeMy WebLinkAboutNarrative 6.4.2026Notice of Intent 286 South Sea Avenue West Yarmouth, Massachusetts PROJECT DESCRIPTION 1.0 INTRODUCTION The proposed Project is located at 286 South Sea Avenue, in West Yarmouth, MA (the Site) involves construction of a single-family home with appurtenances and a detached accessory dwelling (the Project). This application is being submitted in accordance with the Massachusetts Wetlands Protection Act 310 CMR 10.00 (WPA) and the Town of Yarmouth Wetland Protection Bylaw and Regulations (the Yarmouth Bylaw). 2.0 SITE DESCRIPTION The Site is located in a residential area, bordered by Radio Land to the south. The Site itself is an undeveloped, forested lot with a historic access easement through the center . The proposed project falls within the following areas of conservation jurisdiction that are protected under the WPA and the Bylaw include: • Land Subject to Coastal Storm Flowage (LSCSF), FEMA Floodzone AE (Elevation 11) • NHESP Priority Habitat 232 (PH) and Estimated Habitat (EH) 3.0 PROPOSED ACTIVITIES The proposed project involves the construction of a 4-bedroom single family dwelling with attached garage, deck, and asphalt driveway, as well as a 2-bedroom detached accessory dwelling with partially elevated deck, pathway, and extension of the asphalt driveway. These two dwellings will be supported by a Title V septic system with a leaching field underlain by a 40 mil poly liner. As the Site is partially developed, with a historic cleared path and storage area. Roughly 0.5 acres of forested areas will be cleared to accommodate the proposed project elements. This clearing will include 20 mature pines and 16 mature oaks. An existing septic system on the Site will be pumped, crushed and removed from the Site. Additionally, to meet FEMA floodzone compliance the Site will be elevated using 1,700 cubic yards (cy) of clean fill to bring the base elevation of the dwellings to 9.3 ft. The foundation of the dwellings will contain flood vents at elevation 9.5. Additionally, the attached slab garage will be at elevation 12.25 and flood vents will be installed along the foundation. At the limit of disturbance/edge of clearing, sediment controls will demarcate roughly 1 acre of the Site to remain undeveloped. No clearing, access, temporary storage of materials, or other activities will occur beyond this limit. Additionally, a post and rail fence will be installed along the limit of this forested edge, as required by the Determination Letter issued under NHESP 18-37670 on 4/19/2018. An amendment request to the Determination Letter was submitted on May 7, 2026 to include the addition of the accessory dwelling and expansion of area of disturbance on the Site. The proposed project activities will follow a typical construction timeline. 1. sediment controls will be installed along the limit of work and a temporary construction entrance and a concrete washout area will be established, 2. site preparation including clearing, grubbing, and debris disposal, followed by site grading and placement of fill Notice of Intent 286 South Sea Avenue West Yarmouth, Massachusetts 3. areas on the site that are not needed for construction work, or access will be stabilized via hydroseeding or other appropriate measures 4. utilities, septic system, and other underground features will proceed, alongside the construction of the new dwellings 5. final site stabilization of the remainder of the Site will immediately follow construction work with loaming and seeding of all disturbed areas. 4.0 COMPLIANCE WITH PERFORMANCE STANDARDS UNDER THE YARMOUTH BYLAW Below is a discussion of conformance with the applicable performance standards for projects within LSCSF included in the Yarmouth Wetlands Protection Regulations (3/24/2026). Yarmouth Wetland Protection Regulations 4.10 Land Subject to Coastal Storm Flowage (3) a. General Performance Standards ix. Existing septic system and cesspool repairs will be allowed provided they meet all Title 5 and local Board of Health thresholds. Not Applicable, septic system is new. x. All groundwater elevations shall incorporate seasonable adjustments if test holes and or leaching components are 100 feet or closer from major estuaries. The Site over 700 feet from major estuaries, Project will comply. xi. Any proposed deck, shed, or other similar structure must be securely anchored to a footing or foundation. Project will comply. xii. Any activity shall preserve existing soils, vegetation, and other natural conditions that serve as buffers to coastal flooding and storm surges. Roughly 1 acre of the 1.6-acre Site will be preserved as wooded or open field area. Project will comply to the greatest extent possible. 5.0 MITIGATION Erosion controls (staked straw or biodegradable wattles and/or staked silt fence) will be installed along the limit of work line. These controls will remain in place and in operational condition until final site stabilization is complete. All construction materials will be staged as far from resource areas as possible. Roll off containers or other appropriate containers will be placed within the cleared portion of the Site, near the construction access and debris will be removed regularly. A contained concrete washout area will be established along the construction access and will be kept in Notice of Intent 286 South Sea Avenue West Yarmouth, Massachusetts good order during project activities. Should any concrete escape from the contained washout area, all materials will be excavated and removed from the Site. Following construction, all building materials will be removed from the Site. Any disturbed area within the project Site will be stabilized with grass seed and topped with straw mulch to protect the soil and seed until the area is sufficiently stabilized.