Brunswick

The LCP Chemicals Site is among the most complex CERCLA remediation projects in U.S. EPA Region 4. Past site operations included petroleum refining, electric power generation, and paint and chemical manufacturing which resulted in contamination of soil and groundwater. The site is located adjacent to an ecologically-sensitive estuarine marsh. Contaminants include volatile organic compounds (VOCs), polynuclear aromatic hydrocarbons (PAHs), mercury, chromium, lead, and polychlorinated biphenyls (PCBs). Geosyntec was retained to provide lead engineering services for a CERCLA removal action and a remedial investigation/feasibility study (RI/FS).

This Dredge Spoil Area/Outfall Ditch site is located in coastal Georgia and consists of four source areas, three disposal areas and an outfall ditch. The sources border Dupree Creek, Terry Creek and the Back River. From 1948 through 1980, toxaphene was produced at a plant in Brunswick. During this period, wastewater was disposed directly into Dupree Creek. Interpretation of a 1971 aerial photograph showed a plume in Dupree Creek emanating from the outfall ditch.The U.S. Army Corps of Engineers (USACE) Savannah District has been involved in dredging Terry and Dupree Creeks since 1938. Dredged spoils had been disposed in three principal areas. The sediments dredged from Terry and Dupree Creeks were determined to be contaminated with toxaphene. The largest disposal area used by the USACE during this time was about 17 acres. The impoundment construction was such that sediment and water were disposed directly into the spoil area, and as the solids settled out of the dredge slurry, water was allowed to drain out of three weirs and back into Terry and Dupree Creeks.