PROJECTS

FIND Long Range Dredged Material Management Planning

Project Details
Services

Since 1987, Taylor Engineering has provided services to the Florida Inland Navigation District (FIND), the local sponsor of Florida’s Atlantic Intracoastal Waterway and Okeechobee Waterway, to prepare and implement long-term dredged material management plans for 502 miles of federal navigation channels. This work requires close coordination with the U.S. Army Corps of Engineers (USACE) Jacksonville District, federal and state permitting agencies, local governments, and the general public through numerous public workshops. The program locates, obtains, designs, and permits dredged material management sites – inclusive of upland dredged material management and beach placement areas – capable of handling projected 50-year maintenance dredging requirements in FIND’s 12 counties. Taylor Engineering analyzed historic USACE engineering plans and records to establish logical channel reaches and associated 50-year dredging requirements. We identified candidate sites within each reach and ranked each via color infrared and black and white aerial photography, soils and wetland inventory maps, and on-site inspections. We evaluated various management options to arrive at a management concept that represents the most feasible combination of engineering, operational, archeological/cultural, environmental, and cost considerations. During planning and construction, we custom design each upland dredged material management area (DMMA) to be built with on-site material. Design aspects of each facility include a field investigation and site visit, geotechnical investigation, wetland and wildlife impact assessment, cultural resources assessment, dredged material quantity/quality analysis, embankment design, site drainage design, sediment and erosion control measures, access road design, control/measurement of groundwater impacts, design of water control structures for operations and site drainage, and on-site mitigation. Final design documents include construction plans, specifications, bid quantities, engineering cost estimates, and complete contract documents. Our Coastal and Marine Geosciences laboratory evaluates sediment identified for dredging to determine beach compatibility under Florida Statutes. After receiving construction and operation permits from state and federal authorities, dredged material may be placed in the DMMA and transferred to the beach or pumped directly to the beach from the dredging site. In total, this program has identified 71 dredged material placement locations including 11 beach placement areas, 24 operational upland DMMAs, four barge offloading/transfer sites. When complete, the program will manage over 41.5 million cubic yards of dredged material over 50 years and beyond.

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