March 1997 the USDEP in concert with NJDEP, Stevens Institute, and the New Jersey Institute of Technology conducted a SITE demonstration study to assess the effectiveness of the ChemPro vitrification system to remediate hexavalent chromium contaminated soil. The primary objective was to evaluate whether the waste and product streams from the Cold Top system were capable of meeting the EPA RCRA definitions of a non-hazardous waste based on the stream's leachable chromium content. Among the secondary objectives was the intent to confirm the ability of the vitrified material to meet NJDEP's engineering and environmental criteria for use as fill material, and the system's ability to meet compliance requirements for controlled and uncontrolled emissions.

The study, which was performed at the company's pilot plant facility in Niagara Falls New York, involved 10,000 lbs of hexavalent chromium contaminated soil drawn from two Superfund sites in Jersey City, New Jersey.

Per the December 1999 published report of the SITE study (#EPA/540/R-97/506), "the Demonstration results showed that the Cold Top system vitrified chromium-contaminated soil from the two New Jersey sites, yielded a product meeting the RCRA toxicity characteristics leaching procedure (TCLP) standards..... Emissions of dioxins, particulate, oxides of nitrogen, sulfur dioxide, carbon monoxide, and hydrogen chloride were all below the appropriate New York limits..."

For full article click here: http://www.epa.gov/ORD/SITE/reports/540r97506/540r97506a.pdf