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BENCH SCALE FIXATION OF SOILS FROM THE TACOMA TAR PITS SUPRFUND SITE
Citation:
Rupp, G. BENCH SCALE FIXATION OF SOILS FROM THE TACOMA TAR PITS SUPRFUND SITE. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/8-89/069.
Description:
This report documents the results of bench-scale soil fixation study conducted with materials from the Tacoma Tar Pits SuperfundSite. Chemical fixation (also called stabilization/solidification)is a relatively new technique for remediating contaminated soils. It entails both immobilization of contaminants via sorption or chemical reaction and physical transformation of the soil into a firm, impervious "monolith." Fixation has been used for years to mmobilize metals in low-level radioactive wastes and specialized ndustrial wastes, such as baghouse dusts. It has not been ommonly used at sites with organic contamination, however. This tudy utilized materials contaminated with metals and several types f organic contaminants including benzene, toluene, xylene, polycyclic aromatic hydrocarbons, and poloychlorinated biphenyls. amples of heavily contaminated soils and wastes from the site were hemically fixed using a proprietary product, and the resulting monoliths were subjected to various physical, chemical, and eaching tests. The purpose was to assess the efficacy of fixation or a complicated matrix, i.e., one that was physically eterogeneous and contained several classes of contaminants.