Biological specimens collected will be analyzed for body burden concentrations of selenium and boron as priority analytes. If funding allows, additional analyses may be conducted for pesticides and other man-made organics, priority metals, and inorganics. All analysis for selenium residues in tissue will be by hydride generation atomic absorption spectrophotometry (HGAA). All analyses for boron residues in tissues will be by inductively coupled plasma emission spectroscopy (ICP). Because fish and waterfowl foraging on insects, other macro invertebrates, and fish would consume the entire organism, chemical analyses will be performed on whole-body composite food chain samples for fish and wildlife effects assessment. However, for public health risk assessment purposes, fillets from the more common gamefish species will be analyzed. Concentrations of selenium and boron will be reported on dry-weight basis in all samples, and they also will be reported on wet-weight basis in gamefish.