During 1980, we completed the literature review task with publication of Volumes 1 and 2 of the ''Bibliography of Aquatic Ecosystem Effects, Analytical Methods and Treatment Technologies for Organic Compounds in Advanced Fossil-Fuel Processing Effluents.''A summary of work completed on all process waters evaluated during this project (15 May 1977 through 1 November 1981) is presented. A total of 32 process waters from coal gasification, oil shale retorting and tar sands extraction have been evaluated through our screening steps that include chemical toxicity, degradation and bioaccumulation testing. For the current reporting period we have completed work on 9 process water samples or sample sets: (1) the embryo-larval bioassay exposing fathead minnows (Pimephales promelas) to Hanna-4B-01W coal gasification condenser water; (2) toxicant avoidance bioassays with the same Hanna-4B sample; (3) acute toxicity bioassays of chemical fractions of Hanna-3 (CGR-76-178) coal gasification condenser water; (4) Occidental-6 oil shale retort water (embryo-larval bioassays on fathead minnows and rainbow trout,9657 ); (5) Lawrence Livermore Run-4 oil shale retort water (chemical characterization, acute toxicity tests, and toxicant avoidance tests,9657 ); (6) Geokinetics-17 oil shale retort water (chemical characterization and acute toxicity tests,9657 ); (7) Omega-9, Geokinetics-9, and Paraho Tank 500 oil shale retort waters (fractional toxicity tests,9657 ); and (8) one major tar sands process water, Vernal tar sands water (80-Tarsand-1S-03W-00-C). Because this sample was produced as a stable oil-water emulsion, it was necessary to treat the sample in various ways producing several treated water samples which were characterized along with the raw water.