Leonard Chemical Company, Inc.
EPA ID: SCD991279324
Rock Hill, York County, SC
Congressional District: 05
NPL Status: Proposed: 09/08/83; Final 9/21/84
Project Manager
Administrative Record Index (Adobe
Reader Required): OU1
Site Repository:
York County Library
138 E. Black St.
Rock Hill, SC 29731
Site
ProfileFor documents not available on the website, please contact the Region 4 Freedom of Information Office (http://www.epa.gov/region4/foiapgs/submit.htm).
Site Background:
The 7-acre Leonard Chemical Company site began operating in the late
1960's as a hazardous waste treatment facility. Its primary treatment
method was distillation. Recovery residues were placed in various
locations on the site. Plant operations ceased in 1982, under orders
of the South Carolina Department of Health and Environmental Control.
Approximately 3,400 drums and 11,500 gallons of various chemicals
were left on the site. Materials included solvents, volatile organic
compounds (VOCs), printing inks, polyester solids, stillbottoms,
and filters for paint, water, and fiberglass. Numerous spills and
leaks occurred, threatening groundwater, and the State ordered
the owner to install three monitoring wells. By 1988, the site
was overgrown with scrub and covered with abandoned equipment and
machines. Numerous sludges lay on the ground, and vegetation was
spotty where chemical wastes and stillbottoms had been used as
fill. The gate and fence had been breached, and signs of trespassing
were evident. Approximately 5,900 people live within a 4-mile radius
of the site; 240 people live within a mile. Under a 1983 court
order, Leonard Chemical Company cannot resume operation without
prior approval of the South Carolina Department of Health and Environmental
Control. In July 1991, a Consent Decree was entered by the Court
triggering the Leonard Chemical Steering Committee contractors
to begin the field investigations.
Cleanup Progress: Studies Underway
In 1983, a group of generators potentially responsible for the chemical wastes found on the site (PRPs, or Potentially Responsible Parties) formed a committee and retained a contractor to remove wastes from the site, under the oversight of SCDHEC. Drums and some of the contaminated soil were removed that year. This was a limited waste removal action, and additional contamination was left at the site.
Under the 1991 Administrative Order on Consent with EPA, a group of PRP's formed the Leonard Chemical Generators Group (also referred to as the Leonard Chemical Steering Committee) undertook a Remedial Investigation to determine the extent of contamination at the site. Investigation activities included monitoring well installation and sampling, subsurface soil sampling, and stream and sediment sampling. Additional field work was conducted to determine the extent of groundwater contamination both on and off site. Finally, monitoring wells were installed on properties east and south of the site for soil gas sampling purposes, and a soil gas survey was performed. EPA completed a Baseline Risk Assessment in mid-1994. The Remedial Investigation was completed by the PRPs in 1995. A draft Feasibility Study was completed by the PRPs in September 1996, but was not acceptable in terms of meeting the objective of a Feasibility Study defined in the guidance. The Leonard Chemical Generator's Group hired a new consultant to revise the document, which was finalized in December 2000. The Record of Decision was completed in August 2001. The Final Remedial Design was completed in March 2009. The Remedial Action workplan should be sent to EPA by June 2009. Once the RA workplan is approved by EPA, RA activities will commence
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