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)>i APTIM September 30, 2022 Eric Charest, Natural Resource Manager Indian River County Public Works Coastal Division 180127" Street Vero Beach, FL 32960 Subject: Work Order 2018008-05 Dear Eric: Aptim Environmental & Infrastructure, LLC 6401 Congress Avenue, Suite 140 Boca Raton, FL 33487 Tel: +1 561 361 3167 Fax: +1 561 391 9116 www.aptim.com Hurricane Ian Storm Impact Assessments — Sectors 3, 5 and 7 Indian River County, FL This proposal outlines a scope of work for Aptim Environmental & Infrastructure, LLC (APTIM) to provide storm impact assessments for the Sector 3, Sector 5, and Sector 7 project areas in Indian River County due to the impacts of Hurricane Ian, in support of the County's coordination with the Federal Emergency Management Agency (FEMA). The Sector 3 Beach Restoration Project (R-20 to R-55) was constructed in three phases from 2010 to 2012, subsequently renourished from R-24 to R-55 in the winter of 2014/15, and most recently renourished in two phases from the winter of 2020/2021 to the spring of 2022. The Sector 5 Dune Restoration Project (R-71 to R-85) was constructed in 2005 and 2006 following impacts from the 2004 and 2005 hurricanes and was renourished in the winter of 2019/20. The Sector 7 Beach Restoration Project (R-97 to R-108) was constructed in 2007, and easements are currently being obtained for the next nourishment. The Sector 3, Sector 5 and Sector 7 project areas were recently impacted by the passing of Hurricane Ian in late September 2022. As regularly maintained local- and State -funded engineered beach restoration projects, these projects may qualify for post -disaster relief funding from the FEMA Public Assistance Program (Category G). The following services will be provided to support the County's coordination with FEMA. Scope of Work Beach volumetric changes and contour changes will be calculated in the Sector 3, Sector 5, and Sector 7 project areas using surveys that were collected prior to and following the impact of Hurricane Ian. Beach profile transects were surveyed at the FDEP R -monuments by the County's surveyor, Morgan & Eklund, in Summer 2022 as part of the annual monitoring effort, which also represents the pre -storm condition. A post -storm survey will be performed by Morgan & Eklund under a separate work orderto the County to document the most recent condition of the beach. Beach contour changes will be evaluated to document changes at the shoreline and the dune. Volumetric changes will be quantified above MHW (+0.6 ft NAVD) and above the depth of closure. If deemed technically appropriate, the background erosion rate for each project area will be extracted from the volume change results. The beach changes will be summarized with tables and graphical representations, and the losses due to the storm impact will be identified. Storm repair costs will be estimated and provided for preliminary information to FEMA.