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On this page:
- What Is the Current Site Status?
- Activity and Use Limitations
- Sampling and Monitoring
- Green Remediation
- Enforcement Information
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The 140-acre Cabot/Koppers site is in Gainesville, Alachua County, Florida. The site is one mile east of U.S Highway 441. It includes two properties: the Koppers area (now owned by Beazer East, Inc.), covering 90-acres on the western side of the site, and the Cabot Carbon area, covering 50-acres on the eastern side of the site. The area surrounding the site is a mix of commercial and residential urban development and undeveloped properties.
Since the early 1900s, Cabot and Koppers operated pine tar, charcoal and wood-preserving facilities at the site. Operations at the site. In 1984, because of soil and groundwater contamination caused by those operations, EPA listed the site on the Superfund National Priority List. In 1990, EPA issued a Record of Decision (ROD) directing the responsible parties, Beazer East (Koppers) and Cabot Carbon, to treat contaminated soils, sediments, groundwater, and surface water to protect human health and the environment.
The ROD was updated in 2011. The Site is currently in the remedial design and remedial action phase. The current Five-Year Review was published in 2016. The next Five-Year Review is scheduled to be released in 2021.
EPA, state and local government, responsible parties and local developers are working together to successfully clean up the site. This collaboration has led to beneficial reuse of the Cabot side of the site which today contains a shopping center, retail stores, commercial office space and many car dealerships. EPA expects completion of all remedial actions at both Sites to occur by late 2020.
What Is the Current Site Status?
The most recent Five Year Review was published by EPA HQs in 2016. The Protectiveness Status is – Will Be Protective.
All remedial activities are scheduled to be completed at the Site by the end of 2020.
Current Remediation Activities
Cabot Carbon completed a remedial design to construct a vertical barrier wall and a hydraulic containment system with an engineered cap in September 2018
ISGS injections are scheduled to begin in the Koppers South Lagoon Area in 2019.
Vertical barrier wall installation is scheduled to take place in 2019 at both Koppers and Cabot Carbon.
Sediment removal from a drainage ditch leading to Springstead Creek scheduled for 2019.
Remedial components are being designed and constructed for an engineered cap, in-situ solidification/stabilization in the former North Lagoon and Drip Track process areas.
Historical remediation activities at the Site include:
- Treating groundwater contamination using in-situ geochemical stabilization (ISGS)
- Offsite contaminated soils were removed from 103 residential structures, seven commercial buildings, four vacant lots, and the Genesis Preparatory School.
- 116 tons of contaminated sediment removed from two creeks impacted by waste discharge from operations on the Cabot area of the site.
- Completed construction of the trench that intercepts contaminated groundwater from the Surficial Aquifer for treatment at both the Koppers and former Cabot Carbon Site. To date, these system have removed more than 500 million gallons of groundwater per site.
Activity and Use Limitations
At this site, activity and use limitations that EPA calls institutional controls are in place. Institutional controls play an important role in site remedies because they reduce exposure to contamination by limiting land or resource use. They also guide human behavior. For instance, zoning restrictions prevent land uses – such as residential uses – that are not consistent with the level of cleanup.
For more background, see Institutional Controls.
EPA uses institutional controls to reduce exposure to contamination by restricting access to contaminated areas. Institutional controls can also guide human behavior through legal mechanisms such as deed restrictions and public health warning signs.
A fence surrounds the Koppers site to prevent direct access. Deed restrictions limit access to development and new groundwater wells.
Sampling and Monitoring
Groundwater monitoring by Cabot Carbon and Beazer East is ongoing to address the required remedial design and remedial action in the Surficial, Hawthorn, and Upper Floridian aquifers.
Beazer East is operating an extraction and treatment system in the Upper Floridan Aquifer that remediates groundwater. Instead of discharging all of this treated water to the GRU system, Beazer East is reusing this treated water for irrigation purposes at the 86-acre Koppers Site.
EPA negotiated legal agreements with the site’s potentially responsible parties (PRPs) to investigate and clean up the site. The PRPs continue to fund site cleanup, monitoring and oversight activities.