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Terry Creek Dredge Spoil Area / Hercules Outfall
National Information
Photos/Multimedia
Pond at Terry Creek Dredge Spoil site. (Source: NOAA)
- Additional Site Photos
- Site Video
Additional Resources
- Site Cleanup Terms - can be found in EPA's glossary
- EPA Guides to Cleanup Technologies
- Superfund Community Involvement (PDF) (17 pp, 130K, About PDF)
Site Summary Profile
EPA ID: GAD982112658Location: Brunswick, Glynn County, GA
Lat/Long: 31.166110, -081.466660
Congressional District: 01
NPL Status: Proposed: 04/01/97
Affected Media: Ground water, Soil, and Sediments
Cleanup Status: Early Action Initiated/Completed and Study Underway - physical cleanup activities have started
Site Reuse/Redevelopment: Continued Use: Recreational and Ecological use as a recreational fishery and habitat for several threatened and endangered species.
Site Manager: Scott Martin (martin.scott@epa.gov)
Site Background
The Terry Creek Dredge Spoil Area/Hercules Outfall site is located in Brunswick, Glynn County, Georgia, and consists of four source areas: three disposal areas and the Hercules outfall. Between 1948 and 1980, Hercules, Inc. produced toxaphene, a chlorinated pesticide, at its Brunswick plant. During this period, wastewater containing toxaphene was discharged through an outfall ditch into Dupree Creek which flows into Terry Creek.
Portions of Dupree and Terry Creek were periodically dredged by the U.S. Army Corps of Engineers, and dredge material was placed in several areas near the confluence of Terry and Dupree Creeks. Toxaphene contamination has been found in the outfall ditch sediments, Terry and Dupree Creek sediments, and the dredge disposal areas.
Threats and Contaminants
In 1995, EPA Region 4 conducted an Expanded Site Inspection (ESI), which included sampling of ground water from private wells, surface soil, subsurface soil, surface water, and sediments. Samples collected from the dredge spoil impoundment, contaminated dredge areas, and the sediments of Dupree Creek, Terry Creek and the Back River all contained elevated concentrations of toxaphene.
Site Cleanup Plan
A Remedial Investigation and Feasibility Study (RI/FS) is underway and is expected to be completed by June 2011. The results of this study will be used to inform the design of the site cleanup plan.
Cleanup Progress
A removal action to excavate and dispose of the most highly contaminated sediments in the outfall ditch and in Terry and Dupree Creeks was completed in 2001.
Seafood monitoring since the removal action has demonstrated a significant reduction in total toxaphene concentrations, but fish consumption advisories still exist for parts of Terry and Dupree Creek. Advisories are documented by the State Fish Advisory Program.
Site cleanup activities are being led primarily by potentially responsible parties with oversight by EPA.Enforcement Activities
EPA signed an Administrative Order on Consent with Hercules, Inc. in September 1999 to perform the RI/FS.
Community Involvement
EPA has conducted a range of community involvement activities at the Terry Creek Dredge Spoil/Hercules Outfall site to solicit community input and to ensure that the public remains informed about site activities throughout the site cleanup process. Outreach activities have included public notices, interviews, and public meetings on cleanup activities and updates.
Future Work
Remedy design will begin after completion of the RI/FS, tentatively scheduled for June 2011.
Site Administrative Documents
Site Repository
For more information or to view any site-related documents, please visit the site information repository at the following location. As new documents are generated, they will be placed in the information repository for public information.
Brunswick/Glynn Co. Regional Library
208 Glouchester St.
Brunswick GA 31523
For documents not available on the website, please contact the Region 4 Freedom of Information Office.