Incineration at the Vertac Chemical Corporation Superfund Site, Jacksonville, Arkan

Site Name:

Vertac Chemical Superfund Site


Jacksonville, Arkansas

Period of

January 1992 - September 1994


Remedial Action


MRK Industries

On-Site Incineration

- Solids pretreated by triple rinsing, shredding, and drying
- Incineration system consisting of rotary kiln and secondary combustion chamber (SCC)
- Enclosed conveyor transported contaminated material to the unit
- Residence time was approximately 40 minutes, kiln temperature of 2,000° F and SCC temperature of 2,200° F
- Treated materials (incineration ash and residual) were collected and disposed of off site in a Subtitle C hazardous waste disposal facility.

Cleanup Authority:
CERCLA, SARA, RCRA, and State: Arkansas
- ROD Date: NA
- State-lead

SIC Code:
2879 (Pesticides and Agricultural Chemicals)
Point of Contact:
Mike Arjmandi
Arkansas Department of Pollution Control & Ecology
P.O. Box 8913
8001 National Drive
Little Rock, AR 72219-8913
(501) 682-0852

Dioxins and Volatile Organic Compounds

- TCDD; chlorinated benzene; chlorinated phenols; 2,4-D; and 2,4,5-T.
- TCDD concentrations up to 50 mg/L

Waste Source:
Drummed still bottom waste - herbicide manufacturing waste

Type/Quantity of Media Treated:
Storage Drums, Drummed Waste, and Soil
- 9,804 tons of waste
- 1,027 tons of soil

Purpose/Significance of Application:
Two temporary restraining orders were filed to stop the incineration project over public concern about the incinerator

Regulatory Requirements/Cleanup Goals:
Destruction and Removal Efficiency (DRE) of 99.9999% for all constituents of concern as required by Resource Conservation and Recovery Act (RCRA) incinerator regulations, 40 CFR part 264, subpart O.

Emissions and trial burn data indicated that all DRE and emissions standards were met.

Cost Factors:
The incineration system at the site consisted of a rotary kiln and a secondary combustion chamber, followed by an air pollution control system.

Between 1948 and 1987, the Vertac site operated as a herbicide manufacturer within the city limits of Jacksonville, Arkansas. The by-product TCDD was placed in drums and stored on-site. Investigations at the site conducted by the U.S. EPA and the Arkansas Department of Pollution Control and Ecology (ADPC&E) as part of Vertac's participation in the 1978 National Dioxin Survey revealed TCDD concentrations as high as 40 mg/L in production wastes and eventually resulted in the site being placed on the National Priorities List (NPL) in 1983.

A Consent Decree was entered into by EPA, ADPC&E, and two RPs in January 1982, which required an independent consultant to assess the management of wastes being stored on the site and to develop a proposed disposal method. The proposed remedy was implemented in the summer of 1984 by court order over the objection of EPA who deemed the proposal unsatisfactory.

On-site incineration began in January of 1992 and was completed in September 1994.