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Terry Creek Dredge Spoil Area / Hercules Outfall


Pond at Terry Creek Dredge Spoil site. (Source: NOAA)

Additional Resources
Site Summary Profile
EPA ID: GAD982112658
Location: 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
Human Exposure Under Control: Yes
Groundwater Migration Under Control: NA
Sitewide Ready for Anticipated Use: No
Site Reuse/Redevelopment: Continued use: a recreational fishery and habitat for several threatened and endangered species are located on site
Site Manager: Scott Martin (martin.scott@epa.gov)

Current Site Status

The Terry Creek Dredge Spoil Areas/Hercules Outfall site includes the area where the Hercules Brunswick pesticide production facility discharged wastewater through an outfall ditch into Dupree Creek, which flows into Terry Creek, from 1948 until 1980. The site also includes nearby areas used to store sediments dredged from Dupree Creek and Terry Creek. EPA proposed placing the site on the National Priorities List (NPL) in 1997 because of contaminated ground water, soil, sediment and fish tissue. EPA, the Georgia Environmental Protection Division (Georgia EPD) and Hercules, Inc., the site’s potentially responsible party (PRP), have investigated site conditions and taken steps to clean up the site in order to protect people and the environment from contamination. A fish consumption advisory Exit EPA Disclaimerremains in place for parts of Dupree Creek and Terry Creek. By investigating and cleaning up the site, EPA, Georgia EPD and the site’s PRP continue to protect people and the environment from site contamination.

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Site Location and Background

The site is located in Brunswick, Glynn County, Georgia. The site consists of four source areas – three disposal areas and the outfall ditch – in between the Hercules Brunswick facility and the Back River. The Hercules outfall ditch extends from Highway 71 to Dupree Creek. A residential neighborhood that includes low-income and minority residents borders the area of the site referred to as the Riverside Dredge Spoil Area, next to Back River. Goodyear Elementary School is also located nearby but has not been affected by the site’s contamination. Three NPL sites are also located in Brunswick the Brunswick Wood Preserving site, the LCP Chemicals Georgia site and the Hercules 009 Landfill site.

Between 1948 and 1980, Hercules, Inc. operated a pesticide production facility and discharged wastewater from the facility through an outfall ditch. The U.S. Army Corps of Engineers periodically dredged areas of the site, including Dupree Creek and Terry Creek., and placed the dredged sediment in several areas near the merging point of Dupree Creek and Terry Creek.

EPA proposed placing the site on the NPL in 1997. Recreational and ecological land uses are currently located on site, including a recreational fishery and wildlife habitat for several threatened and endangered species.

View site location map.

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Threats and Contaminants

Site investigations found contamination in ground water, soil, sediment and fish tissue that could potentially harm people in the area. Contamination resulted from wastewater handling practices. Contaminants of concern include toxaphene.

Contamination affected sediment in the Hercules Outfall Ditch Area, Dupree Creek and Terry Creek. A fish consumption advisory Exit EPA Disclaimer remains in place for parts of Dupree Creek and Terry Creek. The last fish sampling event took place in September 2011.

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Investigation and Cleanup Responsibility / Oversight

Hercules, Inc., the site’s PRP, leads site investigation and cleanup activities, with oversight provided by EPA and Georgia EPD.

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Site Cleanup Plan

The site’s PRP is conducting a site investigation to identify cleanup options for remaining contamination in the Hercules Outfall Ditch Area. Following the site investigation, EPA may issue a cleanup plan (a Record of Decision, or ROD) for the site.

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Cleanup Progress

From 1997 until 2001, the site’s PRP conducted short-term cleanup actions to remove contaminated sediment from the outfall ditch, Dupree Creek and Terry Creek. The PRP dug up contaminated sediment and disposed of it at an off-site landfill. Following cleanup actions, the PRP began a seafood monitoring program and found that contaminant levels in fish had declined significantly. However, a fish consumption advisory Exit EPA Disclaimerremains in place for parts of Dupree Creek and Terry Creek.

In the mid-2000s, a local community group, the Glynn Environmental Coalition Exit EPA Disclaimer, shared concerns with EPA’s Inspector General that the Agency’s approved test method was insufficient. Based on these concerns, EPA developed a new analytical test method. EPA developed this approach in collaboration with the site’s PRP as well as with input from other scientific groups. EPA then applied this new analytical approach to ground water samples collected at the site in 2006. EPA’s analysis determined that substances identified in the ground water samples did not pose a threat to people or the environment. For its work, EPA Region 4 received an EPA Scientific Achievement Award.

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Enforcement Activities

EPA negotiated legal agreements with the site’s PRP to investigate and clean up the site. The PRP continues to fund site cleanup, monitoring and oversight activities.

Fact Sheet
  • Fact Sheet on Terry Creek Superfund Site Proposed Plan, Brunswick Georgia (PDF) (20 pp, 1.32MB, About PDF)
  • Publice Notice for Terry Creek Superfund Site, Brunswick, Georgia (PDF) (1 pp, 39.19KB, About PDF)
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    Community Involvement

    EPA is working with the community and its state partner to develop a long-term cleanup plan for the site, reflecting the Agency’s commitment to safe, healthy communities and environmental protection. Community engagement and public outreach are core components of EPA program activities.

    EPA is conducting a range of community involvement activities to solicit community input and to make sure the public remains informed about site activities throughout the cleanup process. Outreach efforts include public notices, interviews and public meetings. EPA also issues a biannual environmental cleanup newsletter that addresses all Superfund sites in Brunswick. If you would like to join the mailing list, please contact EPA Community Involvement Coordinator Angela Miller (miller.angela@epa.gov).

    EPA awarded the Glynn Environmental Coalition multiple Technical Assistance Grants to support community outreach and engagement at the Superfund sites located in Brunswick.

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    Future Work

    EPA plans to conduct an investigation to determine how best to address remaining contamination in the Hercules Outfall Ditch Area.

    The PRP continues to conduct fish tissue sampling and reevaluate the site’s fish consumption advisory every two years.

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    Additional Information

    EPA keeps additional site documents and information in a site information repository at the location below. EPA also posts site documents, when available, on EPA’s CERCLIS Site Profile page. For documents not available on the website, please contact the Region 4 Freedom of Information Office.

    Site Repository

    Brunswick/Glynn Co. Regional Library
    208 Glouchester St.
    Brunswick GA 31523

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