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Stauffer Chemical Company (Tampa)
National Information
Photos/Multimedia
Warehouse at the Stauffer Chemical Company Tampa site.
- 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: FLD004092532Location: Tampa, Hillsborough County, FL
Lat/Long: 27.963050, -082.370550
Congressional District: 11
NPL Status: Proposed: 06/17/96; Final: 12/23/96
Affected Media: Ground water, Sediment, Soil, Surface Water
Cleanup Status: Construction complete - physical cleanup activities have been completed
Site Reuse/Redevelopment: None
Site Manager: Carmen Santiago-Ocasio (santiago-ocasio.carmen@epa.gov)
Site Background
The Stauffer Chemical Company site is located in Tampa, Florida. The site is an inactive pesticide manufacturer/distribution facility that encompasses about 40 acres of land in an industrialized area of Tampa. Packaging and distribution of organochlorine and organophosphorus pesticides occurred at the site between 1951 until 1986. The facility is now inactive and most of the structures used for site operations have been demolished. Disposal practices at the site included the burial of containerized wastes, off-specification pesticides, and packaging materials.
Threats and Contaminants
Site investigations revealed the presence of pesticides in on-site soil, surface water, and sediment in on-site ponds, and in ground water underlying the site.
Site Cleanup Plan
The Record of Decision (ROD) for the site was issued in 1995. Major cleanup elements for the site included:
- Excavation of soils with contaminant concentrations exceeding remediation goals to a depth of 0-2 feet.
- Ex-situ biological treatment of the excavated soil.
- Backfilling of the excavated areas with the treated soil.
- Placement of one foot of clean fill over pond sediments to reduce ecological risk.
- Extraction and treatment of contaminated ground water and discharge of treated ground water to the local water treatment plant
- Filing deed notices to restrict ground water use until remediation goals are achieved.
In August 2006, EPA issued an Amended ROD for soil cleanup at the site. Major elements of this revised cleanup approach included:
- Construction of a containment cell on site.
- Removal of contaminated surface soils (0-2 feet) to be placed in the containment cell.
- Removal of one foot of contaminated pond sediments to be placed in the containment cell.
- Installation of a 2-foot thick pervious soil cap and the impervious geosynthetic cap over contaminated surface soil the containment cell.
- Removal of Dense Non-Aqueous Phase Liquid (DNAPL) contaminated subsurface soil.
- Institutional Controls to restrict access to on-site contamination.
Cleanup Progress
A removal action to address buried drums and debris and 3,450 cubic yards of contaminated soil was completed in 1993. The soil was temporarily stored on site and later treated by Low Temperature Thermal Desorption which was completed in November 1994.
Cleanup activities under the ROD at the site began in May 1999. It was initially believed that the total quantity of contaminated soils requiring treatment was about 16,000 cubic yards, and an additional 2,500 cubic yards of pond sediments. The soil was treated with XenoremTM. Xenorem is an ex situ bioremediation technology that has been used to treat organochlorine compounds such as DDT, dieldrin, and toxaphene contamination. Organic amendments such as manure or wood chips are added to contaminated soil to enhance anaerobic conditions which promote dechlorination of organochlorine compounds.
This initial cleanup occurred over three rounds of treatment, each of which took a year to implement. Because these three rounds failed to meet the soil cleanup goals for the site, Stauffer Chemical developed a modified cleanup approach for contaminated soil at the site. In August 2006, EPA issued an Amended ROD for this alternative approach. Implementation of this new cleanup approach was done between October 2006 and June 2007.
Installation of a ground water recovery and treatment system was completed in August 2000 and is currently operating to capture shallow ground water under the site. Contaminated ground water is treated on site via carbon adsorption and then discharged to the City of Tampa sanitary sewer system.
Institutional Controls, in the form of deed restrictions, are being put in place through an agreement between the Florida Department of Environmental Protection (FDEP) and Stauffer Management Company (SMC).
SMC representatives prepared and submitted to FDEP the draft Restrictive Covenant language to establish the Institutional Controls in January 2009.
The first Five-Year Review (FYR) of the remedy was performed in 2005. This FYR found that the site remedy is protective of human health and the environment.Site cleanup activities are being led primarily by the potentially responsible party (PRP) with oversight by EPA.
Enforcement Activities
In September 1992, an Administrative Order by Consent was executed, requiring SMC to conduct a Remedial Investigation/Feasibility Study (RI/FS) at the site.
SMC is responsible for undertaking cleanup activities under an Administrative Order by Consent issued by EPA in 1993.
A 1998 Consent Decree required SMC to continue cleanup activities at the site.
Community Involvement
EPA has conducted a range of community involvement activities at the Stauffer Tampa 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
EPA and the potentially responsible parties are waiting for FDEP’s approval to finalize the Remedial Action Construction Completion Report. Once the deed restrictions are in place, it is anticipated the Construction Completion Report will be completed.
The next FYR for the site is scheduled for 2010.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.
Reference Department Head
4202 East Fowler Ave.
Tampa, FL 33620
Administrative Record Index
- ROD Amendment (PDF) (3 pp, 95K, About PDF)
- Removal Action (PDF) (6 pp, 220K, About PDF)
- OU-1 (PDF) (22 pp, 1MB, About PDF)
For documents not available on the website, please contact the Region 4 Freedom of Information Office.