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Shuron Textron, Inc.
| Shuron Textron, Inc. EPA ID: SCD003357589 Location: Barnwell, Barnwell County, SC Congressional District: 02 NPL Status: Proposed: 06/17/96; Final 12/23/96 Project Manager Site Repository: Barnwell County Public Library 2001 Hagood Ave. Barnwell, SC 29812 Documents: 
The Shuron Site is located adjacent to the city of Barnwell in Barnwell County, South Carolina. A former manufacturing facility occupies about 34 acres of the 85-acre property, with wetlands comprising the remaining acreage. The facility was used for the manufacture of ocular glass lenses from 1962 to 1991. Textron was the original owner, but sold the company to a group of employees in 1985. Sampling events during the 1980s and early 1990s by the State of South Carolina, U.S. EPA, and the potentially responsible party (PRP), showed volatile organic and metals contamination in the various media, including soils and groundwater. In 1994, EPA and Textron signed an Administrative Order to initiate both an emergency removal action and a Remedial Investigation and Feasibility Study (RI/FS) at the site. Removal work was completed in January 1995. The main site contaminants, as defined in the RI/FS (1995-1997), were volatile organic compounds (VOCs) in groundwater, and metals (mainly lead, arsenic, zinc, and copper) in soils and wetland sediments. Cleanup Progress: Remedial Design Underway In September 2003 the PRP’s contractor prepared a conceptual approach for an enhanced anaerobic biodegradation (EAB) pilot project to address the larger “deep VOC” area. The pilot test began in May 2006 and included constructing and using injection wells to deliver nutrient solutions into the affected aquifer, where microbial populations can convert the site contaminants into their less-toxic and non-toxic breakdown products. The Enhanced Anaerobic Bioremediation Pilot Test Report was submitted to EPA and SCDHEC by the PRP's contractor, CDM, on September 9, 2008. The report noted that several issues were observed during the pilot test, such as pH drop, biological fouling affecting injection rate, VOC concentration rebound may be occurring, and the absence of DHC bacteria in some areas of the pilot cell. The report concluded that in prior years CDM has evaluated other remedial technologies, such as groundwater pump/treat and monitored natural attenuation, and that while the pilot test of EAB resulted in some challenges, CDM believes that EAB still offers the most viable technology for reducing groundwater VOC concentrations. CDM proposed to prepare a work plan for EAB remedial design, which would include additional investigation to finalize some of the design parameters and to address some of the issues. EPA approved the EAB Pilot test report on October 30, 2008. Because EAB was not addressed in the 1993 Record of Decision (ROD) for the site, EPA has begun preparing a ROD Amendment. CDM submitted the Groundwater Remedial Design Work Plan to EPA and on May 15, 2009. |