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Indian River County Work Order Number - 2 Sector 4 Dune Restoration Project Exhibit 1 - Scope of Work Exhibit 1 - Scope of Work Sector 4 Dune Restoration Project Introduction: This Work Order provides for services for Preliminary and Final design, Permitting, and to support bidding for a dune restoration project within Sector 4 (Project). The "Indian River County Beach Preservation Plan Update" (BPP, adopted June 2020) defines the limits of Sector 4 from Florida Department of Environmental Protection (FDEP) Reference Monument R-55 (about 3/4 mile south of the northern limit of John's Island) to R-72 (near Surf Lane at the north limits of the County's Tracking Station Beachfront Park). The County's Sector 5 project nourished the beach and dune within the City of Vero Beach and included the Sector 4 segment from R-70 to R-72; this small segment is not included in the proposed Sector 4 Project. The 2020 BPP identifies that the beach and dune within Sector 4 experienced (a) accretion prior to 2005, and (b) shoreline retreat at an average of 1.7 ft/yr from 2013 to 2019. To offset the more recent erosion, various upland private property owners have performed dune restoration projects following significant hurricane events. The dune system within Sector 4 and elsewhere within Indian River County were most recently damaged by Hurricane's Ian and Nicole in 2022. Under prior authorization, Coastal Tech (a) developed a conceptual design for Sector 4 dune restoration, and (b) attended pre -application meetings with U.S. Army Corps of Engineers (USACE) and FDEP staff. The Conceptual Design Report for the Sector 4 Dune Restoration Project limits sand placement in the dune intended to avoid (a) impacts to nearshore hardbottom, and (b) typically associated FDEP and USACE requirements for nearshore hardbottom monitoring - typical for beach restoration projects proposed in close proximity to nearshore hardbottom. The work is proposed to be performed by Coastal Technology Corporation (Coastal Tech) with support by CSA Ocean Sciences Inc. (CSA) and Ecological Associates, Inc. (EAI). Task 1 — Design: The Conceptual Design Report ("summary letter report's — prepared under separate authorization - will serve as the basis for the Preliminary and Final Design of the Project. Task 1a — Preliminary Design: Coastal Tech will expand the Conceptual Design Report to develop a Design Document — as identified during the FDEP and USACE pre -application meetings - to include: • characterization of Sector 4 native beach sands based upon (a) testing performed within Sectors 3 and 5, and (b) data as may be available from FDEP and the Florida Geological Survey; • a Sediment QC/QA Plan - per FDEP standards; • a Physical Monitoring Plan — per FDEP standards; • Preliminary Design Drawings — in the form of 8.5" x 11" Permit Sketches — for the proposed Project including representative cross-sections and a plan view clearly depicting the beach access locations and staging areas; • the proposed construction schedule; • an brief assessment of the following alternatives: No Action, Dune Restoration, and Beach & Dune Restoration — citing a brief description of each alternative, the pros/cons associated with each alternative, and why dune restoration is (a) the most appropriate alternative that best avoids and then minimizes the impacts to protected species/resources, and (b) best meets the goals and objectives of the County. Page 1 of 3 September 22, 2023