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November 2, 2022 / Page 10 of 15 Bella Vista Park I Number 11723.04 City of Sunny Isles Beach Contract Addendum # 1 Bella Vista Park Seawall 116600-133 November 1, 2022 Page 3 of 12 Marine Construction Design of marine structures involves several components in addition to typical construction of an upland structure. The harsh marine environment can result in increased deterioration and future maintenance issues, if not properly considered in the design process. A marine structure is exposed to variable conditions, such as saltwater, storm waves, tidal currents, and potential sediment transport, as well as other dynamic loading conditions. Furthermore, marine facilities are governed by strict environmental permits IMiami-Dade County Division of Environmental Resources Management (DERM), Florida Department of Environmental Protection (FDEP), and United States Army Corps of Engineers (USACE)] in addition to the typical building permit. The first step in the permitting process is illustrating relevant site data, along with a conceptual design of the proposed work on a set of permit sketches. These sketches will form the basis for the permit applications to the environmental agencies. Based on the presented details of the proposed Project, the agencies may have questions, recommend design changes, or require strict guidance on construction methods. Once the processing and negotiation are completed, the final design and construction drawings will be prepared. Through detailed plans and hands-on communication with agencies, Cummins Cederberg is experienced in expediting the permit process. Inexperience or limited understanding of the engineering and permitting aspects in the marine environment can result in a lengthy permitting process and/or increase overall construction cost due to too stringent permit requirements. Scope of Services The following section outlines the scope of services to be provided by Cummins Cederberg for the Client. Task 1- Marine Engineering Design Task 1.1- Seawall Structural Design Cummins Cederberg will design a new seawall, at or landward of mean high water, along the southwest shoreline (approximately 180 linear feet) of the site. The new seawall is anticipated to include concrete panels, batter piles, and a new concrete cap. The new cap elevation will match the adjacent property which was recently constructed. Additionally, DERM requires the new seawall cap be six inches above the adjacent landward grade to prevent sheet flow into tidal waters, as well as placement of one cubic yard of riprap per linear foot of new or replacement seawall. Typical sections will be developed illustrating the design layout, retained elevations, and proposed materials. Specifications and details for material characteristics such as concrete strength, water content, and corrosion inhibitors, along with reinforcement details, will be developed for various components as part of the design process. CUMMINS CEDERBERG, INC. I Miami I Fort Lauderdale I Jupiter I St. Petersburg I Tallahassee Engineering Inspired Design. � 94