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)>iw APTIM September 22, 2021 Eric Charest Coastal Division Indian River County Public Works 1801 27th Street Vero Beach, FL 32960 Aptim Environmental & Infrastructure, LLC 6401 Congress Avenue, Suite 140 Boca Raton, FL 33487 Tel: +1 561 391 8102 Fax: +1 561 391 9116 www.aptim.com Subject: Indian River County, FL Sector 5 — 2018029 — Work Order #9 Year 1 Post -Construction Engineering Monitoring Report Dear Eric: This proposal outlines a scope of work for Aptim Environmental & Infrastructure, LLC (APTIM) to provide a Year 1 post -construction monitoring report for the Sector 5 Beach and Dune Restoration Project (R-70 to R-86) in Indian River County, which was completed in February 2020. This proposal was prepared to fulfill the stipulations of the Joint Coastal Permit (JCP) No. 0363427 -001 -JC and modification 0363427- 002 -JN dated September 9, 2019 for the Sector 5 Beach and Dune Restoration Project. The scope and fee were developed following the provisions of the Professional Services Agreement between Indian River County and APTIM, dated April 3, 2018, to provide engineering and biological support services in support of the Sector 5 Beach and Dune Restoration Project (RFQ#2018029). Scope of Work Volumetric and contour changes at the Sector 5 Beach will be calculated using surveys that were collected at the FDEP R -monuments by the County's surveyor, Morgan & Eklund. APTIM will review the County's routine Spring/Summer 2021 beach profile survey data to ensure that it conforms to the standards required by the FDEP physical monitoring plan. APTIM will notify the County of any issues with the survey data and will coordinate through the County or directly with the surveyors to resolve any issues. APTIM will develop an engineering report that discusses the performance of the beach fill project. 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. All computations and distinguished erosion and accretion patterns/trends will be summarized with tables and graphical representations in addition to plots of the survey profiles. Deliverable A Year 1 post -construction monitoring assessment will be provided in report format for the Sector 5 project area. The report will summarize and discuss background information regarding the project, survey datasets utilized, beach contour and volumetric changes, and overall project performance. The report appendices will include the raw survey data and superimposed plots of the two most recent beach profiles, the design template, and pre- and post -construction profiles.