This progress report describes new experimental results and interpretations for data collected from October 1,1992, through September 30,1993, as part of the Characterization Task of the Uranium in Soils Integrated Demonstration of the Office of Technology Development, Office of Environmental Restoration and Waste Management of the US Department of Energy. X-ray absorption, optical luminescence, and Raman vibrational spectroscopies were used to determine uranium speciation in contaminated soils from the US Department of Energy's former uranium production facility at Fernald, Ohio (18 mi northwest of Cincinnati). These analyses were carried out both before and after application of one of the various decontamination technologies being developed within die Integrated Demonstration. The treatment technologies included soil washes with carbonate, citrate, Tiron, and Tiron/dithionite mixtures. This year the program focused on characterization of the uranium speciation remaining in the soils after decontamination treatment. X-ray absorption and optical luminescence spectroscopic data were collected for approximately 40 Fernald soil samples, which were treated by one or more of the decontamination technologies. Results for the A-series soils from the Incinerator Area suggest that the treated soils can be divided into three sets. The first set comprises control samples that are little changed from the untreated soils. The second set encompasses most of the A-series samples. The uranium remaining in these soils appears to have a slightly higher ratio of tetravalent to hexavalent uranium than the untreated soils. Determining Uranium Specfatkxi in Femald Soils have. The third set consists of only All soils that were treated by Tiron, carbonate, o? both, but with no reducing agent. This set appears to have the highest ratio of tetravalent to hexavalent uranium remaining in the soil for any sample examined thus far. Observation of different x-ray absorption spectra in the second and thud sets suggests that there are several uranium species-rather than a single intransigent species-left in the soils following treatment and that the treatment chemistry may be dictating the difference in the remnant species. The treated B-series soils from the Plant 1/Storage Pad Area are less easily categorized. However, from the usual x-ray absorption criteria, it appears that they retain primarily hexavalent uranium following the treatments. The optical luminescence data demonstrate that there is a decrease in size (and probably quantity) of the particulate hexavalent uranium that gives rise to the green emission. Thus, all treatment technologies do seem to lead to a more dispersed, finer grained contamination. Some instances of particulate green emission still exist in these samples, and the spectral band structure suggests that this is attributable to a schoepite phase. An orange emissive phase, also seen in many samples, is probably attributable to a hexavalent uranium species, but its identity has not been confirmed. New Raman and luminesc...