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APTIM January 19, 2023 Page 2 of 4 1000 feet north (updrift) and 2000 feet south (downdrift) of the project area (R-69.5 to R-87) for a length of approximately 3.6 miles. 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 border. The purpose of the survey is to provide a comparison for pre- and all subsequent post -construction edge delineations. 2) Monitoring Permanent Transects: Twenty (20) transects were established along the length of project influence, which includes 1000 feet north (updrift) and 2000 feet south (downdrift). This includes nine (9) biological monitoring transects and eleven (11) sediment only transects. All transects were established perpendicular to the shoreline and extend from the nearshore hardbottom edge to a maximum distance of 50 meters seaward. APTIM will conduct the Year 3 Post -Construction biological survey of the hardbottom using quadrat assessments, sediment measurements and video/photo documentation as detailed in the Biological Monitoring Plan. Up to nine (9) 0.5-mz quadrats will be sampled along each transect to quantify the benthic community. Sediment data will be collected using line -intercept and 1-m interval sediment depth measurements, and video documentation will also be 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 nine (9) 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 9 days of field operations. Task 1: Deliverable Raw data will be provided to FDEP and the County within 45 days of completion of the survey. This includes 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, video and 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 recent, clear aerial photographs (in digital format). A Year 3 Post -Construction biological monitoring report will be generated for submittal to the County and regulatory agencies. Task 1: Schedule The Year 3 Post -Construction monitoring event will take place during summer 2023. 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. Task 1: Cost The lump sum cost for this task is $93,129.12.