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International Mineral and Chemical Corp (IMC)

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International Mineral and Chemical Corp (IMC) site .

Additional Resources
Site Summary Profile
EPA ID: SCD003350493
Location: Spartanburg, Spartanburg County, SC
Congressional District: 04
NPL Status: Superfund Alternative Approach
Affected Media: Ground water, Soil, Surface Water
Cleanup Status: Removal action completed
Human Exposure Under Control: NA
Groundwater Migration Under Control: NA
Sitewide Ready for Anticipated Use: NA
Site Reuse/Redevelopment: None
Site Manager: Giezelle Bennett (bennett.giezelle@epa.gov)


Current Site Status

The International Mineral and Chemicals (IMC) site includes the area where International Mineral and Chemical Corporation operated a fertilizer facility from 1910 until 1987. EPA did not list the site on the National Priorities List (NPL) but considers it an NPL-caliber site and is addressing it through the Superfund Alternative Approach. EPA, the South Carolina Department of Health and Environmental Control (SCDHEC), and Vigindustries, a subsidiary of IMC Global, the site’s potentially responsible party (PRP), 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. A water line connects business and residences near the site to the public water supply. By monitoring ground water, EPA, SCDHEC and the site’s PRP continue to protect people and the environment from site contamination.

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Site Location and Background

The 41-acre site is located in the Arkwright neighborhood just south of Spartanburg, South Carolina. Site features include a security fence, asphalt paving, concrete floors of the main fertilizer building, former office and garage areas, and the former aboveground bulk fuel storage area. A concrete potash storage area and a concrete pad also remain.

The Arkwright Dump Superfund site borders the site to the north and east, an active chemical manufacturing facility borders the site to the south and a chemical and textile manufacturing facility borders the site to the west. Site surroundings include residential and industrial land uses and undeveloped land. Residences nearby include low-income and minority residents.

From 1910 until 1987, International Mineral and Chemical Company operated a fertilizer facility on the site. From 1947 until 1970, operations included a sulfuric acid production process. The facility’s superphosphate production process operated until 1987. Fertilizer mixing operations continued until 1987. Before the 1970s, facility operations used two on-site ponds to provide water for pollution control equipment and to store plant sewage. Operations expanded the sewage pond into two ponds, one used for wastewater and sewage and the other used for stormwater.

The site is located in a 500-acre, nationally recognized revitalization area known as the ReGenesis project. The community organization ReGenesis, Inc. leads the effort, with support provided by numerous federal, state and local partners, including EPA, SCDHEC, and the City and County of Spartanburg. The site is not currently in use.

View site location map.

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Threats and Contaminants

Site investigations found contamination in ground water, soil and surface water that could potentially harm people in the area. Contamination resulted from facility operations. Contaminants of concern include arsenicpolychlorinated biphenyls (PCBs)leadfluoride2,4-Dinitrotoluene(DNT) and 2,6-DNT.

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Investigation and Cleanup Responsibility / Oversight

Vigindustries, the site’s PRP, leads site investigation and cleanup activities, with oversight provided by EPA and SCDHEC.

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Site Cleanup Plan

In 2010, EPA issued an Action Memorandum outlining a cleanup plan to address additional site contamination. The plan included the following activities:

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Cleanup Progress

In 1987, parties dredged the two on-site ponds and installed monitoring wells at the site. In 1999, the PRP demolished the facility buildings. In 2002, the PRP removed approximately 15,500 tons of soil from the on-site ponds and sent the soil off site for disposal. From 2004 until 2007, the PRP conducted site investigations and then removed 6,000 cubic yards of facility materials and 700 cubic yards of soil. From 2010 until 2011, the PRP dug up and disposed of contaminated soil off site, placed a buffering/neutralizing chemical in the dug-up area, backfilled the dug-up area and began ground water monitoring.

Since 1987, parties have taken several actions to address remaining site contamination. In May 2011, parties completed a removal action (a short-term cleanup). The cleanup included the excavation and off-site disposal of contaminated soils.

From 2010 to 2011, parties conducted a non-time critical removal action. The removal action excavated and disposed of contaminated soil and process residuals off site. Parties placed a buffering/neutralizing chemical at the base of the excavations, followed by backfilling and grading for positive drainage. The removal action also included the inspection and removal of an on-site explosives bunker under the supervision and direction of an explosives expert. Ground water monitoring is currently ongoing.

EPA OSC.org Exit EPA Disclaimer provides more information about EPA’s removal activities at the site.

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Enforcement Activities

EPA negotiated legal agreements with the site PRP to investigate and clean up the site. The PRP continues to fund site cleanup, monitoring and oversight 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 fact sheets and presentations, public notices and information meetings.

In 2009, EPA hosted two public meetings at the C. C. Woodson Recreation Center in Spartanburg to explain the proposed cleanup activities and receive public comments.

The community organization ReGenesis, Inc. leads area reuse efforts as part of the ReGenesis project.

Final Proposed Plan

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Future Work

The PRP conducts ground water monitoring twice annually. A ROD is currently being prepared to address contaminated groundwater onsite.  The ROD is scheduled to be completed in September 2014.

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Additional Information

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

Spartanburg Headquarters Library
151 South Church Street
Spartanburg, SC 29306

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