During the fourth quarter of Phase 2, work continued on evaluating treatment of the seventh residue of Phase 1, conducting scholarly work, preparing for field work, preparing and delivering presentations, and making additional outside contacts. The work consisted of further testing of the solidification of the seventh hazardous waste--the sandblast residue from paint removal in a building--and examining the microstructure of the products of solidification. There were two treated waste mixtures which demonstrated immediate stabilization, the sandblast residue w/30% spray drier residue (CONSOL) and the sandblast residue w/50% PFBC residue (Tidd).