2020-058 - Laserfiche WebLink

Home Browse Search

', APTIM Sector 3 — 2018006 — WO#4: Pre -Con Bio Monitoring March 24, 2020 Page 2 of 4 Exhibit 1 hardbottom edge to a distance of 50 meters seaward. Stainless steel rods will be used to permanently mark the transects to facilitate repeatability for post -construction monitoring. Following transect establishment, a biological survey will be conducted to document the pre -construction condition of the hardbottom using the following methods: • Quadrat Assessments: Up to nine (9) 0.5-m2 quadrats sampled along each transect to quantify the benthic community. • Sediment Measurements: Collected using line -intercept and 1-m interval sediment depth measurements. • Video/Photo Documentation: Collected for the length of each transect. It is anticipated that an additional three (3) days (up to 20 days total) of field operations is required to delineate the hardbottom edge, install permanent transects and monitor the transects. The collected pre -construction data will be compiled and incorporated into an interactive GIS database and the quadrat data will be entered into an Access database. Data entry, reduction, archiving, and analysis time is included in the cost estimate to address the data management and reporting requirements for the field operations. Deliverable Raw data will be provided to FDEP and the County including 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/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 report is not proposed for the pre -construction monitoring survey. APTIM will also provide information or assistance to County staff, as needed or requested. Schedule The pre -construction monitoring event will take place, upon receipt of a written notice to proceed, during the summer (May — September) prior to project construction. Raw data from field operations will be submitted to the County and FDEP within 45 days of completion of the survey. Cost The lump sum cost for this amendment is $26,840.30. Summary The total lump sum cost to perform the proposed work described herein for Sector 3 — 2018006 — Work Order #4 is $26,840.30. The following page includes a summary of the costs and labor hours of each Task. Thank you for the opportunity to serve Indian River County. As always, please do not hesitate to call if you have any questions. Sincerely, Christopher Paul, P.E. Project Manager I Coastal Engineer Aptim Environmental & Infrastructure, LLC. cc: Quintin Bergman, IRC Eric Charest, IRC Stacy Buck, CPE zed Corporate Signature Beau C. Suthard P.G. Printed Name Program Director Title Proj. #1002002913