Abstract: A decontamination system for particulate matter is provided. The system has a fluid treatment chamber within which three screw-type augers operate to mix hydrocarbon laden soil with treating fluid for removing the hydrocarbon therefrom. The treating fluid is maintained in a fluid reservoir and is circulated into and out of the treatment chamber. The fluid is heated by a direct and an indirect heater. The hydrocarbons are released from the soil and allowed to float to the top where they collect and are removed for recycle or disposal. The decontaminated soil is removed from the treating fluid by a drag slat conveyor that permits excess treating fluid to drain therefrom and be collected for reuse in the decontamination system. A cyclone separator is included to spin off suspended fines within the recovered treating fluid. Optionally, a fluid press may be employed to compress additional amounts of treating fluid from the decontaminated matter.