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Indian River Work Order Number 2018007-1 Sector 7 Beach and Dune Restoration Project Exhibit 1 - Scope of Work Task 4 — Offshore Sand Source Evaluation and Delineation The COUNTY will provide available information (data, surveys, and reports) regarding the COUNTY's offshore borrow area and Sector 7 native beach characteristics. Based on this information, the CONSULTANT will: • extract existing data summarizing the offshore borrow area and native beach including: c core -logs for the offshore borrow area; o granularmetric data for sediment samples including: median grain size (d50), mean grain size, munsell color, percent silt and percent carbonate content, and o cumulative frequency plots for each sediment sample; • delineate a proposed borrow area for the Project, • develop "composite statistics" and "a cumulative frequency curve of the composite" for the proposed borrow area; • analyze compatibility of the proposed borrow area and native beach sediments; and • prepare a written summary of the above as an Appendix for the Task 5 Preliminary Design Document. Task 5 — Preliminary Design The COUNTY will provide the CONSULTANT with digital copies of the previous work products produced in support of the initial nourishment of the Sector 7 Project including the Biological Opinion, Permit Sketches, Design Document, Geotechnical Analysis, Environmental Assessment. CONSULTANT will: • Visit the site to photo -document the existing condition of the beach and dune system and Collect and analyze sand samples (at dune, berm, and lower berm) to evaluate the sediment characteristics of the existing beach at eleven (11) reference -monuments in the Project area from R-97 to R-107. The sediment testing (up to 33 samples) will identify the mean grain size, percent fines, sorting, percent carbonate, and Munsell color (wet/dry). • Evaluate in detail two alternatives for the Project including: (a) no additional action and (b) re -nourishment to restore the Sector 7 fill template previously constructed in 2007. For each of alternative, CONSULTANT will assess: c potential impacts of the Project upon existing environmental resources including but not limited to hardbottom, benthic infauna, state/federally protected species, nesting marine turtles, and shorebirds, and o the alternative's ability to fulfill the COUNTY's objectives and design criteria. For Preliminary Design, CONSULTANT will: • Use the latest beach profile surveys provided by the COUNTY (expected February 2018), to assess the sand -fill volume requirements needed to restore the fill template; • Provide an opinion of probable construction costs — employing upland sand sources via truck -haul, and alternately using the COUNTY's offshore borrow area; • Prepare 8'/z "by 11" permit sketches (Preliminary Design Drawings) to be submitted to FDEP and the USACE in formal permit applications under Task 8; • Prepare a Design Documentthat summarizes the results of the preliminary design. CONSULTANT will meet with the COUNTY to review the sketches and Design Document. Page 3 of 5 February 9, 2018