Technology:
On-Site Incineration
- Soil and debris pretreated with shredding and mixing with lime
- Incineration system consisting of rotary kiln and two secondary combustion chambers (SCCs)
- Enclosed conveyor transported contaminated soil and debris to the unit
- Soil residence time of 45 minutes, kiln temperature of 1,300°F, SCC temperature of 1,800°F
Treated soil and debris (incinerator ash) discharged into rotary mixer, where it is sprayed with water
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Cleanup Authority:
CERCLA and State: Texas
- ROD Date: 9/18/86
- State-lead
SIC Code:
Not Applicable | Point of Contact:
Earl Hendrick
Remedial Project Manager
U.S. EPA Region 6
1445 Ross Avenue
Dallas, Texas 75202-2733
(214) 665-8519 | |
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Contaminants:
Organic and Phenolic Compounds
- Naphthalene, chlorobenzene, creosote, toluene, xylene, dichloroethane, and vinyl chloride
- Maximum concentrations in mg/kg - naphthalene (58), chlorobenzene (2.3), toluene (5), dichloroethane (20), and vinyl chloride (1). |
Waste Source:
Disposal Pits - drummed and bulk wastes |
Type/Quantity of Media Treated:
Soil and Debris
- 496,000 tons of soil and debris
- Moisture Content: soil - 10 - 12%
- Soil Density (in situ): 1.58 - 1.72 g/cm3 |
Purpose/Significance of Application:
Third largest Remedial Action Contract ever awarded to incinerate nearly 1/2 million tons of contaminated soil and debris |
Regulatory Requirements/Cleanup Goals:
Destruction and Removal Efficiency (DRE) of 99.99% for principal organic constituents of concern as required by Resource Conservation and Recovery Act (RCRA) incinerator regulations, 40 CFR part 264, subpart O |
Results:
- Emissions and trial burn data indicated that all DRE and emissions standards were met
- Analytical data of residuals indicated that cleanup goals were met |
Description:
Between 1961 and 1967, the Sikes Disposal Pits Superfund Site was the location of the unpermitted disposal of drummed and bulk wastes into unlined sand pits. A remedial investigation determined that soil at the site was contaminated with VOCs and PAHs. A Record of Decision (ROD), signed in September 1986, specified on-site incineration as the remedial technology for the soil and debris. Site cleanup goals and DRE standards were specified for the organic constituents of concern.
Remedial Activities began in October 1990 when IT/Davy began clearing the site. On-site incineration using the IT Corporation Hybrid Thermal Treatment System® began in February 1992 and concluded in June 1994. Following demobilization and site cleanup, remedial activities ceased in December 1994. The treatment system consisted of a rotary kiln and two SCCs. An enclosed conveyor moved the soil and debris to the kiln for treatment. Ash from the incinerator was discharged to a rotary mixer where it was quenched with water. Incineration achieved the soil cleanup goals specified in the ROD.
The total cost of the Remedial Action was approximately $115,000,000. Capital costs accounted for approximately $20,000,000. Operation and maintenance costs accounted for approximately $95,000,000. |
