Environmental fate is a term describing the behavior of a chemical which is released to the environment. This is particularly important in determining whether a chemical will come in contact with a critical species or with man in sufficient concentrations to cause a toxic effect or, in contrast, be rapidly degraded to innocuous products. Environmental Fate includes physical and chemical properties, transport and degradation studies, ambient monitoring data, and field studies. The Environmental Fate Data Base (ENVIPOFATE) is composed of four interrelated files: CASLST, BIOLOG, DATALOG, and XREF. XREF is a file containing the complete references to journal articles cited in DATALOG and BIOLOG. The abbreviated references in DATALOG and BIOLOG can retrieve the complete references contained in the file. XREF is keyed alphabetically by author.