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Home My WebLink AboutNina Coleman for 041624_Meeting_FINAL1 Sandy Neck Beach Long-Term coastal Resiliency Project 1 April 16, 2024 2 2 Agenda for Presentation •Project Background •Project Goals •Overview •Milestones •Past Public Engagement •Regulated Coastal Resource Areas •Proposed Project •Mitigation •Discussion 2 3Sandy Neck’s Vulnerability March 2021March 2018 March 2018 January 2015 March 2018 January 2024 Before 2013, the Beach Facility was stable with occasional dune nourishment. Since then, severe erosion and sediment loss have impacted the Beach Facility. To prevent loss of the parking lot and maintain public access, the Town has implemented seven dune nourishment projects since 2013, using 32,920 cubic yards of sand. Additionally, during winter storm Grayson in January 2018, storm surge flooded the Sandy Neck Gatehouse for the first time in its history. 4Project Goals The parking lot at the Beach Facility is threatened by erosion of the primary dune system, and the Gatehouse area is threatened by flooding from Barnstable Harbor. Loss of the Beach Facility infrastructure will jeopardize recreational opportunities and public access, and impact ability to protect and manage Sandy Neck's natural resources, while also negatively impacting Park revenue. The Town’s primary goals for this project are to develop a long-term coastal resiliency project that: 1.Addresses coastal vulnerability to erosion, dune loss, and flooding; 2.Is sustainable for at least 50 years; 3.Supports current uses of the site that are safe for the public; 4.Enhances and protects coastal resources; 5.Is economically viable, and 6.Is permittable under current environmental regulations. 4 5Project Milestones: Initial Study (2016) to Examine Alternatives for Long-Term Coastal Resiliency Evaluation of Conceptual Alternatives for Long-Term Resiliency and Preparation of 30% Design Plans 5 Key findings included: •Predicted 50-year dune erosion line near the back edge of the existing parking lot; •Determination that relocating infrastructure behind the predicted 50- year dune loss line will reduce risk. Alternatives included: •Stone Revetment with Vegetated Sand Cover •Bio-Engineered Sand-Filled Coir Bags with Vegetated Sand Cover •Partial Relocation Behind Predicted 50-Year Limit of Dune Loss •Full Relocation Behind Predicted 50-Year Limit of Dune Loss •Relocated ORV Trail •Relocated Gatehouse Along the Access Road Preferred Alternative Selected by the Town and the Public (65% Design) •After consultation with the public, Working Group, and Sandy Neck Board, the Town selected its preferred conceptual alternative as "Full Relocation of the Parking lot with Enhanced Dune" (no changes to the ORV trail). •Maintains current public use activities and avoided and minimized impacts to natural resources to the maximum extent possible. Final Design and NOI Permitting (90% Design) As the Project advanced to 90% design, based on public feedback changes were made to: •Enhance pedestrian safety •Improve vehicular traffic flow •Reduce the amount of impervious area, and •Decrease impacts to previously undisturbed coastal resources and rare species habitat. 6 •January 10 & 12, 2023 – •Reviewed Site Vulnerabilities and Constraints •Established Project Goals •Presented Three and Selected One Conceptual Alternatives to Address Vulnerabilities •April 5, 2023 – •Presented Two and Selected One Refined Conceptual Design •June 22, 2023 – •Presented Preliminary Design •March 14, 2024 – •Presented 90% Design March 2022 Public Meeting s 6 7 Coastal wetland resource areas protected by the Massachusetts Department of Environmental Protection Wetland Regulations (310 CMR 10): •Coastal Beach •Coastal Dune •Barrier Beach •Salt Marsh •Estimated Habitats of Rare Wildlife •Land Subject to Coastal Storm Flowage •Isolated Wetlands •ACEC Regulated Coastal Resource Areas 7 8Proposed Project 8 The proposed project includes work at four (4) different areas within Sandy Neck Beach Park: 1.Upper and lower parking lots 2.Entrance to the existing ORV trail 3.New gatehouse area approximately 350 ft up the access road from the existing gatehouse 4.Existing gatehouse area 9Upper and Lower Parking Lots 10Upper and Lower Parking Lots •Full relocation of the upper and lower parking lots behind the predicted limit of dune erosion in 50 years (i.e., 50-yr dune erosion line). •208 parking spaces •Pervious pavement •Relocated beach access paths (2) •Enhanced dune (vegetated with beach grass along the seaward edge of the new parking lot. •A rear dune will be constructed along the back (south) side of the new parking lot to provide stability for the parking area and shelter from car lights for the surrounding neighborhoods. •Stormwater features in the parking lots, including the vegetated swale in the lower parking lot •Infiltration basins (2) •Single emergency access path from the lower parking lot to the ORV trail will also be added. •ADA accessible reconstructed observation deck. •At grade walkway from the lower parking lot to the concession building. 11ORV Entrance Modifications ORV Entrance Trail 12ORV Entrance Trail •Existing ORV trail will remain in place with enhancements to provide improved public safety and additional air-up/air-down spaces. •5 air-up spaces on the north side of the ORV entrance trail and up to 12 air- down spaces on the south side of the trail. •Portable compressor may be available in the afternoons so that spaces on the south side of the ORV trial can also be used for airing-up. •New compressor with flood-proof enclosure will be installed, and the existing dumpsters will be reoriented in their existing location. 13Existing / Proposed Gatehouse AreasExisting/Proposed Gatehouse Areas 14Existing / Proposed Gatehouse Areas •Existing gatehouse will be moved approx.350 ft up the access road to a point that is naturally higher in elevation. •New travel lane for outgoing traffic will be added west of the relocated gatehouse. •Parking for 3 vehicles and queue space for 4 park visitors during times when the parking lot is full. •Bollard lighting will be installed along the edges of the sidewalk and gatehouse to improve public safety and speed control features will be added to the road to improve public safety. •Area of the existing gatehouse will be reconfigured to add 9 new air-up spaces, a compressor with flood-proof enclosure, 2 exit lanes, 1 entrance lane, and 7 new parking spaces. •Existing gravel parking area south of the current gatehouse will be restored with native buffer plantings, leaving a natural path for access to the marsh trail. 15Proposed Project Impacts 15 Impacts Area (acres) Area of Existing Impact 4.22 Area of Proposed Permanent Impact 4.76 Increase in Permanent Impact 0.54 Area of Existing Development to Remain 3.29 Area of New Development 1.47 Area of Restoration 0.88 Permanent Impacts to Coastal Dune, Barrier Beach, Land Subject to Coastal Storm Flowage 4.76 Temporary Impacts to Coastal Dune, Barrier Beach, Land Subject to Coastal Storm Flowage 4.29 16 •Captures and infiltrates stormwater runoff •Planted with native plants •Attracts pollinators with increased biodiversity •Plants filter out pollutants in stormwater Seaside Goldenrod / Little Bluesteam Seaside Goldenrod Source: Friends of Nachusa Grasslands Source: Y. Laskaris/USFWSSource: Outsidepride Seed Sourc Source: Birds and Blooms Source: Native Garden Buzz Indian Grass Butterfly Weed American Beachgrass Vegetated Swale in Lower Lot 16 17 Restored Dune Areas –Example Nauset Beach N a u s e t B e a c h 17 18Impacts to Upland Spadefoot Toad Habitat 18 Determination Letter was issued on June 21, 2023, indicating that the project will result in a Take (321 CMR 10.18 (2)(b)) of upland Spadefoot Toad habitat. •Project will result in 1.54 acres of permanent impact to upland Spadefoot Toad habitat and 3.60 acres of temporary impact to upland Spadefoot Toad habitat. •Spadefoot Toad Protection Plan prepared to protect toads during construction. •Conservation Management Plan currently being prepared to demonstrate compliance with the performance standards for issuance of a Conservation Management Permit per 321 CMR 10.23, and to propose mitigation. 19Mitigation Strategy –Conservation Restrictions Parcel ID 137-002 137-001 Owner Town of Barnstable (BCH) Town of Barnstable (BCH) Acreage 8.08 1.02 Permanent Impacts 1.54 Acres 2:1 Mitigation Ratio 3.08 Acres 19 20Construction Schedule and Phasing -9 0 % E n g i n e e r i n g D e s i g n P l a n s -F i l e N o t i c e o f I n te n t May –July 2024 -100% Engineering Design Plans -Receive Order of Conditions October 2024 –March 2025 Anticipated Construction Phase 1* -Construction of the Upper Parking Lot, Primary Dune and Rear Dune Area October 2025 –March 2026 Anticipated Construction Phase 2* -Construction of the New Gatehouse area -Redevelopment of the Existing Gatehouse area / ORV Entrance March –April 2024 -90% Engineering Design Plans -File Notice of Intent * Schedule contingent on grant funding / permitting 21 Thank you Question and Answer Session https://arcg.is/0KfPPb To find more information about the Project: 22 Improved Lighting •Proposed lights to be consistent with Dark Sky •Technology Lighting 22 23 Upper Parking Lot 24Lower Parking Lot 25 Land Subject to Flooding Existing Footprint Coastal Beach Coastal Dune Permanent vs. Temporary Impacts 26 Land Subject to Flooding Altered Areas to Remain New Impacts to Coastal Resources Coastal Beach Coastal Dune Permanent vs. Temporary Impacts 27 Land Subject to Flooding Altered Ares to Remain New Impacts to Coastal Resources Coastal Beach Coastal Dune Permanent vs. Temporary Impacts Temporary Impacts Proposed Area of Restoration 28 Land Subject to Flooding Coastal Dune Permanent vs. Temporary Impacts Salt Marsh Existing Footprint 29 Land Subject to Flooding Permanent vs. Temporary Impacts Salt Marsh Altered Areas to Remain Coastal Dune New Impacts to Coastal Resources 30 Land Subject to Flooding Coastal Dune Permanent vs. Temporary Impacts Salt Marsh Altered Ares to Remain New Impacts to Coastal Resources Temporary Impacts Proposed Area of Restoration