Incineration at the FMC Corporation - Yakima Pit Superfund Site, Yakima, Washington

Site Name:

FMC Corporation - Yakima Pit Superfund Site


Yakima, Washington

Period of

January 1993 - May 1993


Remedial action


VESTA Technology Ltd.
1670 West McNab Road
Ft. Lauderdale, FL 33309

On-Site Incineration
- Solids crushed and mixed with soil
- Incineration system consisting of co-concurrent rotary kiln and secondary combustion chamber (SCC)
- Enclosed twin screw conveyor transported soil and debris to the unit
- Soil had a through part rate of 60 kg/min with kiln temperature of 650°C, the SCC temperature of 1,107°C.
- Ash discharged onto conveyers, sampled and analyzed, and then landfilled.

Cleanup Authority:
- ROD Date: 9/14/90
- EPA-lead

SIC Code:
2879 (Pesticides
and Agricultural Chemicals)
Point of Contact:
Lee Marshall
U.S. EPA Region 10
1200 Sixth Avenue
Seattle, Washington 98101
(206) 553-2723

- DDD, DDE, DDT, dieldrin, endosulfan, ethion, malathion, parathion, cadmium, chromium, and zinc.
- DDD concentrations of 76 mg/kg, DDE concentration of 210 mg/kg, and DDT concentrations of 210 mg/kg
- The maximum concentrations of contaminants (mg/kg) detected in soil were DDD (76), DDE (28), DDT (210), dieldrin (40), endosulfan (7,000), ethion (180), malathion (170,000), parathion (3,300), cadmium (6), chromium (320), and zinc (1,020).

Waste Source:
Pesticide production wastes disposed of in an unlined pit

Type/Quantity of Media Treated:
Soil and Debris
- 5,600 cubic yards

Purpose/Significance of Application:
Initially, was estimated in the ROD that between 900 and 4,000 cubic yards of material were contaminated. However, contamination extended deeper than previously anticipated and, as a result, over 5,600 cubic yards of material was excavated for incineration.

Regulatory Requirements/Cleanup Goals:
Destruction and Removal Efficiency (DRE) of 99.99 for all constituents of concern as required by Resource Conservation and Recovery Act (RCRA), 40 CFR Part 264 Subpart O.

- Monitoring and trial burn data indicate that all DRE and emission standards have been met.
- Analytical data of residuals indicate that cleanup goals have been met

Cost Factors:
The actual cost for remediation using the incineration system was approximately $6,000,000.

Between 1952 and 1969, wastes contaminated with pesticides were disposed of on the site in an unlined waste disposal pit. It was estimated that 2,000 pounds of material was disposed of on the site in the pit contaminating soil with 1,1-dichloro-2,2-bis(p-chlorophenyl)ethane (DDD), 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (DDE), 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (DDT), and dieldrin.

A Record of Decision (ROD) signed in September 1990 specified on-site incineration as the remedial technology. Site cleanup goals and destruction and removal efficiency (DRE) standards were established for constituents of concern.

On-site incineration began in January 1993 and was completed in May 1993. The treatment system consisted of a rotary kiln and an SCC. Enclosed twin screws moved the soil to the kiln for treatment. Ash was collected and flue gas was completely incinerated. Incineration has achieved the soil cleanup goals specified in the ROD.

The actual cost for remediation using the incineration system was approximately $6,000,000.