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<br />29. Number of whole-body fish samples collected in 1992 from the Colorado, North Fork of the Gunnison, <br />Gunnison, and Uncompahgre Rivers that exceeded the 1984 National Contaminant Biomonitoring <br />Program 85th-percentile concentrations for seven trace constituents..................................................................... 107 <br />30. Concentrations of selenate and selenite selenium causing acute toxicity to Colorado squawfish and <br /> <br />razorback suckers.. ................. ............... ....... ........... ................ ...... ........... ............ ......... ........... ....................... ........ 110 <br />31. Hazard assessment of selenate and selenite selenium in water samples collected in March 1992 <br />from five streams in the Grand Valley to three life slages of Colorado squawfish and razorback <br /> <br />suckers..... ............... .......... .............. .......... ......... ............... ..... ............ ........... ............. ....... ............ ......... ...... ............ III <br />32. Concentrations of boron, uranium, vanadium, and zinc causing acute toxicity to Colorado squawfish <br /> <br />and razorback suckers ............................................................................................................................................. 113 <br />33. Hazard assessment of boron and uranium in water samples collected from five streams in the <br />Grand Valley to three life slages of Colorado squawfish and razorback suckers.................................................... 114 <br />34. Hazard assessment of vanadium and zinc in water samples collected from five streams in the <br />Grand Valley to three life slages of Colorado squawfish and razorback suckers.................................................... 114 <br />35. Geometric mean and maximum concentrations of the 1984 National Contaminant Biomonitoring <br />Program for selected organochlorine pesticides and polychlorinated biphenyls .................................................... 115 <br />36. Statistical summary of selenium concentrations in selected bird-food and bird-tissue samples <br />collected during 1991-92 from wetlands in the Uncompahgre Project, wetlands adjacent to the <br />Uncompahgre Project, and wetlands in the Grand Valley...................................................................................... 117 <br />37. Geometric mean selenium concentrations in water, bottom-sediment, and biota samples from <br />wetlands in the Uncompahgre Project, wetlands adjacent to the Uncompahgre Project, and <br /> <br />wetlands in the Grand Valley ..................................................................................................................................124 <br />38. Selenium concentrations in fish-fillet and bird-breast samples from the Uncompahgre Project <br />area and the Grand Valley, and the quantity of each sample that could be consumed without <br />exceeding the maximum recommended daily quantity for an adult human ........................................................... 125 <br /> <br />VIII CONTENTS <br />