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Record of Decision System (RODS)

REILLY TAR & CHEMICAL CORP. (INDIANAPOLIS PLANT)

Abstract

Site Name:  REILLY TAR & CHEMICAL CORP. (INDIANAPOLIS PLANT)
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/541/R-97/071
ROD Date:  06/30/1997
Operable Unit(s):  06
 
Media:  Groundwater,Soil,Surface water
 
Contaminant:  Organic chemicals, toluene, trichloroethylene, waste fuel, pyridine, pyridine derivatives, benzene, xylene,
 
Abstract:  The Reilly Tar and Chemical (Indianapolis Plant) site is located at 1500 South Tibbs Avenue in the southwest quadrant of Indianapolis. Minnesota Street divides the 120 acre site into two parcels. The Oak Park property, occupying approximately 40 acres, is located north of Minnesota Street. The Oak Park property contains the majority of Reilly Industries, Inc.'s operating facilities, including above-ground storage tanks, distillation towers, and above and below-ground utilities. The Oak Park property also contains one area formerly used for disposal of hazardous wastes, the Lime Pond, a surface impoundment which received hazardous wastes. Drums containing hazardous wastes were also buried in the soils adjacent to the Lime Pond. The Maywood property contains operating facilities on its northern end. This property was formerly the site of chemical process and wood preserving activities and currently contains four other areas used in the past for hazardous waste disposal. These four former hazardous waste disposal areas include the Abandoned Railway Trench, the Former Sludge Treatment Pit, the Former Drainage Ditch, and the South Landfill/Fire Pond. The majority of the operating facility buildings are located north of Minnesota Street; approximately 75 percent of the Oak Park Property is covered by buildings, pavement, and aboveground tank farms. Approximately 20 percent of the Maywood property is covered by buildings, pavement and aboveground storage tanks Excavation and thermal desorption activities have occurred on portions of the remainder of the property. Following completion of these activities, the areas will be revegetated.A new building has been constructed on the northern portion of the Maywood property. This building houses the equipment for a new manufacturing process to produce a raw material for use in the chemical production activities.Industrial development of the Reilly site began in 1921 when the Republic Creosoting Company (which became Reilly Tar & Chemical, which in turn became Reilly Industries, Inc.) started a coal tar refinery and a creosote wood treatment operation on the Maywood property. On-site wood treatment operations occurred from 1921 until 1972. Beginning in 1941, several chemical plants were constructed and operated on the Oak Park property. Environmental problems at the site are related to the management and disposal of creosoting process wastes, and to wastes associated with and substances used in the process of manufacturing custom synthesized specialty chemicals.The earliest recorded complaint about odors and disposal practices at the site was in 1955, which referenced the fact that a chemical manufactured at Reilly had been found in nearby residential wells. In 1964, three contaminants from Reilly were detected in off-site groundwater samples and on-site surface water samples. In 1975, State investigations revealed several on-site problems which were believed to have been contributing to groundwater contamination with organic chemicals. In 1980, an on-site soil sample collected by the State contained various organic chemicals including toluene and trichloroethylene. In 1987, 60,000 gallons of waste fuel, containing primarily pyridine and pyridine derivatives, benzene, xylene, and toluene, were accidentally spilled on the Oak Park property. Some, but not all, of the fuel oil was recovered and some, but not all, of the contaminated soil was excavated by Reilly.In 1984, Reilly Tar was listed on the U.S. EPA's National Priorities List (NPL). In 1987, a remedial investigation (RI) was conducted to characterize the nature and extent of contamination at the site, and a feasibility study (FS) to evaluate and compare remedial alternative according to the terms of an Administrative Order on Consent between the U.S. Environmental Protection Agency (EPA) and Reilly Tar & Chemical.In 1989, Reilly Tar & Chemical changed their corporate name to Reilly Industries, Incorporated, under which they operate today.
 
Remedy:  This action is the final action planned for the site. It specifically outlines an action to address off-site groundwater contamination, which has been determined by the Remedial Investigation to pose unacceptable risks to human health and the environment.The major components of the selected remedy are natural attenuation and long-term groundwater monitoring.Natural attenuation (along with groundwater monitoring), when combined with the continued operation of the OU 1 Groundwater Interim Remedial Measures (GWIRM) system, will provide long-term protection to human health and the environment from exposure to groundwater contamination in the OU 5 area. The perimeter groundwater extraction system, selected as an interim remedy for OU 1, is an integral component of the final groundwater cleanup for the site. The GWIRM system will be in operation until the cleanup and performance standards listed in the OU 1 remedy are met at the facility boundary.Long-term groundwater monitoring will be performed to supplement the existing water quality monitoring program, which is currently conducted on a quarterly basis. This monitoring will be utilized to evaluate the performance of the selected remedy over time.
 
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