This opportunity involves delivering and tailgate spreading Florida DOT-approved Road Base, along with stockpiling Rip Rap and #57 Limerock at the St. Marks National Wildlife Refuge. All Road Base must be sourced from within approximately 80 miles of the delivery location to prevent invasive species. The contractor must provide a minimum of 5 dump trucks per day, with no dump trailers allowed. A not-to-exceed value is specified for each line item, and vendors must state the quantity they can provide for that amount. Performance location is the St. Marks NWR in Florida, and the vendor must include a statement confirming understanding of the sourcing requirement.