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Hollingsworth Solderless Terminal

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Hollingsworth Superfund Site

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Site Summary Profile
EPA ID: FLD004119681
Location: 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
Human Exposure Under Control: Yes
Groundwater Migration Under Control: Yes
Sitewide Ready for Anticipated Use: Yes
Site Reuse/Redevelopment: Site is in continued commercial use –several businesses operate on site
Site Manager: Galo Jackson (jackson.galo@epa.gov)


Current Site Status

The Hollingsworth Solderless Terminal site includes the area where a solderless terminal manufacturing facility operated from 1968 to 1982. EPA placed the site on the National Priorities List (NPL) in 1983 because of contaminated ground water and soil resulting from the manufacturing process. EPA and the Florida Department of Environmental Protection (FDEP) have investigated site conditions and taken steps to clean up the site in order to protect people and the environment from contamination. Site contamination does not currently threaten people living and working near the site. By treating ground water and undertaking Five-Year Reviews, EPA and FDEP continue to protect people and the environment from site contamination.

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Site Location and Background

3.5-acre site is located in a commercial and industrial area of Fort Lauderdale, Florida. Two buildings are located on the site, separated by NW 57th Place (a street). Hollingsworth Solderless Terminal Company (HSTC) used the southern building, formerly known as Plant #1, for degreasing operations. The Kabinet Company previously occupied the northern building, formerly known as Plant #2, and used it primarily for administrative purposes. Various tenants currently use both buildings for commercial operations.

The City of Fort Lauderdale’s Prospect Well Field, which supplies water to the city, is located approximately two miles west of the site. The well field draws water from the Biscayne Aquifer. Site contamination has not affected the aquifer.

HSTC’s solderless terminal manufacturing facility operated at the site from 1968 to 1982. The manufacturing process included the use of molten salt baths, degreasing parts and electroplating, which is a process that involves the application of metal coatings using an electric current. The company disposed of wash and process waters, which contained high concentrations of trichloroethylene (TCE) and heavy metals, in numerous on-site drainfields, by surface discharges and in a 100-foot-deep injection well on site. HSTC filed for bankruptcy in 1981. During the 1980s, commercial businesses began using portions of the site. In 1983, EPA listed the site on the NPL.

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Threats and Contaminants

Site investigations found contamination in ground water and soil that could potentially harm people in the area. Ground water and soil contamination resulted from the discharge of degreasing compounds to on-site drainfields throughout the Plant #1 area. Contaminants of concern include the volatile organic compounds (VOCs), vinyl chloride and TCE.

EPA removed all soil contamination by digging up and disposing of the soil or treating it in place using soil vapor extraction. As of April 2011, only low levels of contamination remained in the ground water. EPA injected living organisms into the ground water to break down the remaining contaminants, a process known as in-situ or on-site enhanced bioremediation. Additionally, the South Florida Water Management District has listed the site as a ground water delineation area, which means all wells placed in the area require the District’s approval.

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Investigation and Cleanup Responsibility / Oversight

EPA leads site investigation and cleanup activities in cooperation with FDEP. Broward County has also assisted EPA with the site’s cleanup.

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Site Cleanup Plan

In 1986, EPA issued a cleanup plan (a Record of Decision, or ROD) for the site. The plan included the following activities:

In 2001, EPA issued an Explanation of Significant Differences to explain why additional cleanup was necessary for soil contamination above the ground water table in the west and south drainfields not treated during the initial cleanup. EPA then performed a bioremediation study at the site from April 2005 to September 2007. Results showed a site-wide decrease in contaminant levels.

In November 2008, EPA issued a ROD Amendment to revise the ground water cleanup approach based on ground water monitoring results. EPA will monitor ground water to make sure the cleanup method meets cleanup goals.

Summaries of site cleanup approaches are also available online in key site cleanup documents, including the ROD.

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Cleanup Progress

In 1982, HSTC pumped out the injection well at the site. In 1989, EPA installed a soil vapor extraction system (SVE) to treat VOC-contaminated soil above ground water. In 1992, soil samples showed that the system reduced TCE concentrations to less than 1 part per million. As a result, EPA removed the SVE system from the site. In 2002, EPA removed and disposed of contaminated soil in the south drainfield. EPA dug up soil to a depth of 2 feet below the water table. EPA removed all contaminated soil at the site. Additionally, EPA removed and disposed of the septic tank associated with the western drainfield.

EPA built and operated a ground water pump-and-treat system beginning in the early 1990s. EPA stopped ground water recovery and treatment in 1994 because the system no longer reduced TCE levels in ground water.

The most recent ground water monitoring results (November 2010) indicate that six out of the 24 ground water wells monitored exceed the State of Florida’s drinking water standard of 1 part per billion for vinyl chloride. Vinyl chloride is the only remaining ground water contaminant detected above state or federal standards.

The site’s third Five-Year Review, completed in 2011, found that that the site’s cleanup approach protects people and the environment from remaining site contamination and is working toward meeting the cleanup goal for vinyl chloride.

In 2011, EPA added additional potassium lactate to the ground water as part of the enhanced in-situ bioremediation cleanup approach; EPA is continuing to monitor its effects. Once vinyl chloride ground water contaminant levels meet federal and state drinking water standards, the site’s cleanup will be complete and EPA will delete the site from the NPL.

Summaries of cleanup activities are also available in Five-Year Reviews online.

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Enforcement Activities

EPA was unable to identify any viable potentially responsible parties for the site. EPA is using federal funds for site cleanup activities.

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Community Involvement

EPA has worked 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 has conducted 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 have included public notices, interviews and public meetings.

During the 2011 Five-Year Review, EPA staff spoke with local residents about the site. EPA also issued a press notice describing important findings from the Five-Year Review.

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Future Work

EPA will continue to monitor the effect of the enhanced in-situ bioremediation cleanup approach on ground water contamination levels until all contaminants of concern are below federal and state cleanup standards.

EPA completed the last Five-Year Review in 2011 and plans to complete the next Five-Year Review in 2016.

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Site Documents

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

Broward County Public Library
100 S. Andrews Ave. - Level 5
Ft. Lauderdale, FL 33301

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