The purpose of this study is to evaluate solvent extraction processing to determine design procedures, scaleup requirements and data needs for simulation of this pretreatment process for coal gasification wastewaters. This evaluation is part of an overall METC simulation effort. Ultimately this effort is targeted at simulating gasification wastewater treatment systems as well as other pertinent process modules on ASPEN. The information contained in this report is presented as follows: (1) summary of data needs for solvent extraction scaleup/simulation; (2) technical approach; (3) review of solvent extraction processing; and (4) design review and scaleup/simulation needs. 14 references, 11 figures, 22 tables.