ANAMAR was contracted by the USACE Mobile District to evaluate dredge material from the Two Mile Federal Navigation Channel near Apalachicola, Florida, for dredging and disposal at a nearby upland confined disposal facility. The Two Mile Navigation Project was federally authorized in November 1963 and is approximately 5 miles in length. The project area is in Franklin County at the entrance to Apalachicola Bay. It includes a 6-foot-deep by 100-foot-wide channel that parallels the city of Apalachicola shoreline intersecting with the Gulf Intracoastal Waterway (GIWW), and also a 6-foot by 100-foot perpendicular connector that extends about 9000 feet to the south into the mouth of Apalachicola Bay. The authorized project depth is -6 feet + 2 feet advance maintenance + 2 feet of overdepth = -10 feet MLLW.
Sediment and site water samples were collected and evaluated from 10 representative stations within the project area. The samples were collected from locations and depths coinciding with the dredging prism. The testing was consistent the Inland Testing Manual (EPA and USACE 1998) (ITM) and SLERP Sediment Testing Guidance. The analytical results were compared to State of Florida soil cleanup target levels and water quality standards (62-777 F.A.C.) to determine suitability for disposal.
ANAMAR coordinated and directed operations for this project and worked closely with USACE and Florida Department of Environmental Protection (FDEP) to develop sampling and analysis schemes, schedules, and deliverables. ANAMAR also reviewed all data and produced a report summarizing the results of the physical testing, sediment chemistry, and elutriate chemistry. Deliverables associated with this project include: