2024-03_Flagler_Geotechnical_Investigation.pdf

This is a Geotechnical Investigation Report prepared for Flagler County, Florida in support of the Flagler County Beach Nourishment Project - Reach II. The report documents subsurface conditions and geotechnical findings along the 5.5-mile project corridor spanning the communities of Painter's Hill, Beverly Beach, and northern Flagler Beach. The investigation included soil boring programs, laboratory testing, and analysis of foundation conditions to support the placement of approximately 1.8 million cubic yards of offshore beach-compatible sand. The geotechnical assessment provides engineering recommendations for dune and beach restoration activities designed to improve coastal resilience and address critical erosion along the designated reach immediately north of the recently completed USACE Coastal Storm Risk Management project.

The report contains detailed subsurface profiles, soil classification data, and engineering parameters necessary for design and construction of the beach nourishment work. Geotechnical findings inform engineering design standards, construction methodologies, and quality control specifications for sand placement operations. The investigation establishes baseline conditions and provides technical documentation required for permit applications, contractor bidding, and project implementation. This preliminary geotechnical work supports the competitive procurement process for the Reach II project and ensures that construction specifications and methods are appropriately developed based on site-specific soil and foundation conditions encountered throughout the project area.