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Eagle Zinc Superfund Site Updates
Site Information
- Hillsboro, IL (Montgomery County)
- EPA ID# ILD980606941
- NPL Site Narrative
- NPL Fact sheet
- Superfund Site Progress Profile
- Alias(es): Sherwin Williams Hillsboro Plant
- Map (Enviromapper)
Contact Information
Community Involvement Coordinator
Virginia Narsete (narsete.virginia@epa.gov)
312-886-4359 or 800-621-8431, ext. 64359
Remedial Project Manager
Nefertiti DiCosmo
(dicosmo.nefertiti@epa.gov)
312-886-6148 or 800-621-8431, ext. 66148
Mon.-Fri., 8AM-5PM
Repositories
Hillsboro Public Library
214 School St.
Hillsboro, IL
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October 2012
On September 6, 2012, U.S. EPA signed the Record of Decision (ROD) for Operable Unit 2 of the Eagle Zinc Superfund Site. The selected remedy consists of the following components:
- Treatment of characteristically hazardous waste;
- Consolidation of treated waste and solid waste under a 22-acre state-compliant cover;
- Sediment excavation and stream realignment;
- Wetland removal and replacement;
- Institutional controls to preserve the remedy’s integrity and prevent exposure; and
- Monitoring and assessment of groundwater and surface water.
The ROD is available to view on-line or in the information repository at the Hillsboro Public Library. The next step in the Superfund process is to design the the selected remedy. The design is currently underway and should be final by next summer.
June 2012
The U.S. EPA has completed a supplemental remedial investigation (SRI) and a Feasibility Study (FS) to address contamination in operable unit (OU) 2 of the site. The SRI determined that there are unacceptable risks to future industrial and construction workers from the high concentration of heavy metals—zinc, lead, cadmium, etc.—in the soil and residue. In addition, there is an unacceptable risk to the sediment dwelling organisms due to high concentrations of zinc and cadmium in the sediment and surface water. The FS evaluated options to address these unacceptable risks.
The two documents can be found online and at the Hillsboro Public Library. The Proposed Plan summarizes the SRI and FS documents and presents EPA's preferred option for addressing the site's contamination. The option has the following components:
- Treatment of characteristically hazardous waste;
- Consolidation of treated waste and solid waste under a 22-acre state-compliant cover;
- Sediment excavation and stream realignment;
- Wetland removal and replacement;
- Institutional controls to preserve the remedy’s integrity and prevent exposure; and
- Monitoring and assessment of groundwater and surface water.
EPA encourages the community to participate in the Superfund process by commenting on the proposed plan. You can make comments at the public meeting on June 14, or submit comments in writing online or via post mail. EPA will respond to public comments in a document called the Responsiveness Summary—a section of the final decision document.
March 2011
To manage the contamination more effectively, the U.S. EPA split the site into to two areas, called operable units (OUs). The first Operable unit is the contamination associated with the dilapidated buildings on site and Operable unit two is related to the soil, residue piles (waste piles ), ground water, and surface water. In September 2009, EPA signed an interim Record of Decision to address the contamination in OU 1. The selected remedy consists of the following components:
- Building Demolition: The demolition of all buildings on-site, including manufacturing buildings, office buildings and laboratories;
- Off-site disposal of Asbestos Containing Materials and Putrescible Wastes: Proper off-site disposal of asbestos containing materials and putrescible wastes;
- Recycling: Recycling of steel, metal, bricks and other recyclable materials. Any material eligible for recycling will be decontaminated to a level of contamination acceptable to the recycling facility;
- On-site Management Cell with Soil Cover: Consolidation of demolition debris and a one-foot soil cover will be placed on-site to temporarily manage the consolidated debris. The vegetative portion of the soil cover will use native grasses, which will require limited maintenance; and
- Management of Wastes: All non-hazardous waste will be managed onsite under the one-foot soil cover. Any hazardous waste will be placed on-site managed consistent with Resource Conservation and Recovery Act waste pile requirements and incorporated into the final remedial action.
The Remedial Design for operable unit one is complete. The Remedial Action start will depend largely on whether funding is available for this project this year.
The Remedial Investigation / Feasibility Study for OU 2 is nearly complete and a final decision for the Site is expected by September 2012. Community members were interviewed fall 2010 about the site. A community involvement plan is available to the general public online and at the Hillsboro Public Library.