A number of problems bearing on the surfactant flushing/washing of soils contaminated with hydrophobic organic compounds were investigated. These included the following : 1. Development of a simple ultraviolet (UV) spectrophotometric method for the analysis of PCBs in sodium dodecylsulfate (SDS) solution 2. Study of the settling of clay fines from SDS solutions 3. Evaluation of laboratory-scale columns versus stirred flasks for use in preliminary feasibility studies 4. Determination of the extent to which SDS is lost during the processes of soil treatment and reclamation