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Hollingsworth Solderless Terminal
National Information
Photos/Multimedia
Hollingsworth Superfund 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: FLD004119681Location: Ft. Lauderdale, Broward County, FL
Lat/Long: 26.198330, -080.152210
Congressional District: 23
NPL Status: Proposed: 12/30/82; Final: 09/08/83
Affected Media: Ground water, Soil
Cleanup Status: Construction complete - physical cleanup activities have been completed
Site Reuse/Redevelopment: Potential for commercial / light industrial
Site Manager: Galo Jackson (jackson.galo@epa.gov)
Site Background
The Hollingsworth Solderless Terminal Company (HSTC) site is located on 3.5 acres of an industrial/residential area of Ft. Lauderdale, Florida. The site is occupied by two buildings separated by NW 57th Place. The southern building at the site, formerly known as Plant #1, is presently occupied by a number of small businesses. The northern building at the site, formerly known as Plant #2, was previously occupied by Kabinet Co.
The plant operated from 1968 to 1982 as a solderless terminal manufacturing facility. The manufacturing process included the use of molten salt baths, degreasing parts and electroplating. The wash and process waters, which contained high concentrations of trichloroethylene (TCE) and heavy metals, were disposed of in numerous on-site drainfields, by surface discharges, and in a 100-foot-deep injection well located on site. HTSC filed for Chapter 11 Bankruptcy Status in November 1981.
The City of Fort Lauderdale’s primary water supply, the Prospect Well Field, is approximately two miles west of the site. The Prospect Well Field taps into the Biscayne aquifer for water supply. Several communities in the vicinity of the site obtain their drinking water from the Biscayne aquifer.Threats and Contaminants
Ground water and soil have been contaminated by volatile organic compounds (VOCs) due to the discharge of degreasing compounds to the on-site drainfields.
Site Cleanup Plan
The Record of Decision (ROD) for the site was issued in 1986. Major cleanup elements for the site included:
- Proper abandonment of the old injection well and all other PVC wells on site.
- Treatment of VOC contaminated soil.
- Treatment of VOC contaminated ground water on site.
- Injection of treated ground water near the site.
In 2001, an Explanation of Significant Differences was issued by EPA to clean up additional contaminated soil above the ground water table in the West and South Drainfields not treated during the original remediation.
An amendment to the ROD was finalized in November 2008 to revise the ground water cleanup approach based on ground water monitoring results. The amended ROD modifies the ground water cleanup approach detailed in the1986 ROD to include treatment of the site's ground water with in-situ enhanced bioremediation (ISEB). Under the ISEB process, potassium lactate will be injected into ground water beneath the site to break down the site contaminants into harmless end products (ethene, chloride, and ultimately carbon dioxide). The ISEB remedy includes monitoring of the ground water to ensure that cleanup objectives are being met.Cleanup Progress
In 1982 HSTC pumped out the injection well.
A soil vapor extraction (SVE) was installed in 1989 to clean up VOC contaminated soil. The SVE system treated soil above the ground water table. After soil samples showed that the SVE system had reduced TCE concentrations to less than 1 part per million, the SVE system was removed in 1992.
A ground water recovery and treatment system was constructed and put into operation in the early 1990s. This system treated contaminated ground water and re-injected the treated water into the aquifer. Ground water recovery and treatment ceased in October 1994 because the system was no longer reducing TCE concentrations in ground water.
The 2000 Five-Year Review for the site recommended that additional soil remediation was required to meet the goals of the ROD and that the remedy for ground water contamination be re-evaluated due to the continued presence of high levels of contamination in monitoring wells. As a result of these recommendations, EPA conducted a supplemental Remedial Investigation. The final report was finalized in June 2001 and indicated the presence of additional residual sources of contamination - the South Drainfield and the West Drainfield.
In February 2002, contaminated soil located in the South Drainfield area was removed and disposed of by EPA. Soil was excavated to a depth of two feet below the water table. In addition, the septic tank associated with the Western Drainfield was removed and its contents were disposed of.
Three Five-Year Reviews (FYRs) have been developed for the HSTC site – 1996, 2000, and 2005. The 2005 FYR stated that immediate contamination threats had been addressed at the site, but that additional work was still needed to ensure that all long-term cleanup goals for the site were accomplished.
The ISEB recommended in the amended ROD is being utilized at the site to address residual ground water contamination at the site. The decision to use ISEB at the HSTC site was based on data from an ISEB pilot-scale treatability study performed at the site from April 2005 to September 2007. Pilot testing showed a site-wide decrease in contaminant concentrations.Site cleanup activities are being led primarily by EPA.
Enforcement Activities
Community Involvement
EPA has conducted a range of community involvement activities at the Hollingsworth 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.
Fact Sheets
- Reuse Fact Sheet (PDF) (1 pg, 125K, About PDF)
Future Work
Monitoring of the impact of the ISEB treatment will continue.
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.
Broward County Public Library
100 S. Andrews Ave. - Level 5
Ft. Lauderdale, FL 33301
Administrative Record Index
- OU-1 (PDF) (34 pp, 900K, About PDF)
- ESD (PDF) (1 pg, 33K, About PDF)
For documents not available on the website, please contact the Region 4 Freedom of Information Office.