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A P T I M February 6, 2024 Page 2 of 6 55), including within one R -monument north (updrift) and three R -Monuments south (downdrift) of the project area for a length of approximately 7.3 miles. R-19.5 and R-57 demarcate the northern and southern boundaries for where the nearshore hardbottom edge shall be mapped. A buoy with a Differential Global Positioning System (DGPS) antenna linked to a topside laptop computer running HYPACK navigational software will be towed by divers to record the position of the nearshore hardbottom edge. The divers will follow the inshore contour of the most prominent hardbottom-sand interface. 2) Permanent Transect Monitoring: Thirty-eight (38) permanent transects were established along the length of project influence, which includes 1000 feet north (updrift) and 2000 feet south (downdrift). This includes twenty-four (24) biological monitoring transects and fourteen (14) sediment -only transects. All transects were established perpendicular to the shoreline and extend from the landward hardbottom edge to a maximum distance of 50 meters seaward. APTIM will conduct the biological survey of the hardbottom using the following methods: 1) Quadrat Assessments: Up to nine (9) 0.5-m2 quadrats sampled along each transect to quantify the benthic community. 2) Sediment Measurements: Collected using line -intercept and 1-m interval sediment depth measurements. 3) Video/Photo Documentation: Collected for the length of each transect. It is anticipated that the effort to delineate the hardbottom edge and monitor the transects will take up to eighteen (18) field days based on previous monitoring events. The data will be compiled and incorporated into a GIS database and in situ data will be entered into an Access database. Time to complete data entry, reduction, analyses, and report production is included in the cost estimate to address the data management and reporting requirements for those 18 days of field operations. Task 1: Deliverable Raw data will be provided to FDEP and the County and will include a PDF of the scanned datasheets, excel spreadsheets with quadrat data, interval sediment depth measurements and line -intercept data, shapefiles of the hardbottom edge survey, and video/photo documentation. Additionally, APTIM will provide a map of the project area and adjacent hardbottom resources with the hardbottom edge delineation and monitoring transects overlaid onto the most recent aerial photography (in digital format). A post -construction biological monitoring report will be generated for submittal to the County and regulatory agencies. Task 1: Schedule The 2024 monitoring event will take place during summer 2024. Raw data from field operations will be submitted to the County and FDEP within 45 days and the monitoring report will be submitted within 90 days of completion of the survey. Tarlr 1 • rnct The lump sum cost for this task is $172,051.34.