A stepwise evaluation of the potential applicability of the candidate technologies to the identified contamination problems was carried out. Technology profiles describing the pertinent processes and current applications were prepared. These profiles formed the basis for the initial screening of the applicability of individual technologies to concentration of hazardous constituents of aqueous wastes. Certain technologies were eliminated from further consideration for reasons discussed in the individual technology profiles. Remaining technologies were carried forward for more detailed review. Compounds identified in the waste streams fell into one of thirteen chemical classes: alcohol, aliphatic, amine, aromatic, halocarbon, metal, miscellaneous, PCB, pesticide, phenol, phthalate, or polynuclear aromatic. The next step in the evaluation process was an extensive literature review which focused on the technologies and upon chemical compounds classes. It was concluded that six processes: biological treatment, chemical coagulation, carbon adsorption, resin adsorption, membrane processes, and stripping have the greatest potential broad range and immediate applicability. In most cases, no single unit process would be sufficient in itself to adequately treat the diverse contamination problems likely to be encountered. Five candidate process trains were formulated as being most broadly applicable to the types of known contamination. A desktop analysis then was performed to assess the ability of each process train to treat each of three selected contamination problems.