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Record of Decision System (RODS)



Address:  1500 S TIBBS AVE 
City & State:  INDIANAPOLIS  IN  46241
County:  MARION
EPA ID:  IND000807107
EPA Region:  05
NPL Status:  Currently on the Final NPL
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R05-93/237
ROD Date:  09/30/1993
Operable Unit(s):  03
Media:  Soil, Sludge
Contaminant:  VOCs, Other Organics
Abstract:  The 120-acre Reilly Tar & Chemical (Indianapolis Plant) site is a former coal tar refinery and creosote wood treatment plant located in Indianapolis, Indiana. Land use in the area is mixed residential, industrial, and commercial, and residences are located immediately adjacent to the eastern boundary of the site. The site is divided into the 40-acre Oak Park property, which contains the majority of the operating facilities, including above-ground storage tanks, distillation towers, and above-ground and underground utilities; and the 80-acre Maywood property, whichcontains operating facilities on its northern end. This site formerly was used for chemical processing and wood preserving activities and currently contains five former waste disposal areas. From 1921 to 1972, coal tar refinery and creosote wood treatment plants operated onsite. Beginning in 1941, several chemical plants were constructed and operated on the Oak Park property. In 1955, alpha picoline, a chemical manufactured onsite, was identified in nearby residential wells, and in 1964, three contaminants from the site were detected in offsite ground water samples and onsite surface water samples. In 1975, State investigations identified several onsite problems believed to be contributing to ground water contamination with organic chemicals, and further investigations, conducted in 1980, revealed various organic chemicals in soil. In 1987, an accidental spill of 60,000 gallons of waste fuel occurred at the Oak Park property. Some of the spilled fuel oil was recovered, and some of the contaminated soil was excavated. Investigations have identified five former waste disposal areas: the Lime Pond area, which received chemical process waste from 1953 until 1965; the Abandoned Railway Trench, which was filled in the 1960s with drums of coal tar enamel and foundry sand; the Former Sludge Treatment Pit, where wastewater sludge from the coal tar refinery and synthetic chemicals operations was dried from the 1950s until 1979; the Former Drainage Ditch, through which wastewater and stormwater were conveyed from the site to a sewer system; and the South Landfill and Fire Pond, where construction debris and various solid and semi -solid wastes, from the coal tar and the synthetic chemicals operations, were deposited. Site contamination was found to be related to the improper use and disposal of creosoting process wastes and substances used in manufacturing chemicals. In 1990, a RCRA facility investigation resulted in an interim measure to minimize risks to wildlife, by regrading and covering the eastern portion of the south landfill and placing plastic netting over the fire pond, which was completed in 1992. Also, in 1992, 149 drums were removed during field activities at the Lime Pond area, and an interim ROD was signed that addressed containment and treatment of contaminated ground water, as OU1. This ROD addresses the contaminated soil and sludge in the five disposal areas, as OU2. Future RODs are planned to address ground water and final source remediation at the site. The primary contaminants of concern affecting the soil and sludge are VOCs, including benzene, TCE, toluene, and xylenes; and other organics, including PAHs. SELECTED REMEDIAL ACTION: The selected remedial action for this site includes performing bench scale and pilot scale studies to define operational parameters and to assure the feasibility of cleanup goals; excavating contaminated soil from the Lime Pond Drum Removal Area, the Abandoned Railway Trench, the Former Drainage Ditch, and the Former Sludge Treatment Pit; treating the excavated soil onsite using low temperature thermal desorption, followed by carbon adsorption of the treatment residuals; sending condensate offsite for incineration and disposal; returning the treated soil to the excavation areas and placing a six inch soil cover over them; treating sludge from the Fire Pond at the South Landfill using onsite in-situ solidification, with carbon adsorption of any air emissions; performing a TCLP on the treatedsludge to determine if it is characteristically hazardous; placing a multi- layer cap over the Fire Pond, if the solidified sludge is found to be hazardous; placing a soil cover over the Fire Pond and the remaining portions of the South Landfill; monitoring ground water and source areas; and implementing institutional controls, including deed restrictions and site access restrictions. The estimated present worth cost for this remedial action is $6,000,000, which includes an unspecified O&M cost for 30 years. PERFORMANCE STANDARDS OR GOALS: Chemical-specific surface and subsurface soil and sludge excavation and cleanup goals were not provided; however, risk-based target levels will ensure that the soil that is excavated, treated, and disposed of onsite, and that in-situ solidified sludge will demonstrate an incremental cancer risk below 10[-6]. INSTITUTIONAL CONTROLS: Institutional controls will be implemented, including deed restrictions, and access to the site will be restricted during the cleanup process.
Remedy:  This operable unit action is the second of four planned for the Site. It specifically outlines an action to address five on-site sources of soil and groundwater contamination, which have been determined by the Remedial Investigation to pose unacceptable risks to human health and the environment.

The major components of the selected remedy include:
- Excavation of soils at four of the CERCLA Areas, the Lime Pond Drum Removal Area, the Former Drainage Ditch, the Former Abandoned Railway Trench, and the Former Sludge Treatment Pit with treatment of the soils
to achieve the cleanup standards listed in the ROD by low temperature thermal desorption. Treated soils will be replaced into the unit from where they were excavated and covered with six inches of soil and vegetated.
- Ultimate disposal of the condensate generated as a result of the thermal desorption process by off-site incineration.
- Treatment of sludge in the Fire Pond (a portion of the fifth CERCLA Area, the South Landfill) by in-situ solidification to meet the performance standards listed in the ROD. Following solidification, if the solidified sludge is RCRA characteristics, then a multilayer cover will be placed over the Fire Pond. If the solidified sludge is no longer RCRA characteristic, then a soil cover will be placed over the Fire Pond.
- Placement of a soil cover over the remaining portions of the South Landfill.
- Groundwater and source area monitoring to ensure that the goals of this ction are met.
Text:  View full-text ROD [ 77K ]
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