Metal ions spiked on soil matrix can be quantitatively extracted by supercritical carbon dioxide containing dithiocarbamate reagents. When applying this extraction technique to real soil samples, only a fraction of the native metals present in the soil can be extracted. TCLP (Toxicity Characteristics Leaching Procedure) results indicate that the leachable metals in the soil are essentially all removed by the supercritical fluid extraction method. This in situ chelation supercritical fluid extraction technique appears to provide a method of analyzing and removing leachable metals from contaminated soil.