The purpose of this study is to "establish a data base and methodology for classifying...the streams of the Roanoke Basin into a hierarchy of ecological systems" and to "establish evaluative criteria and methodology for classifying and ranking streams within the ecological systems relative to their state of environmental quality" (p. R1).

"This report summarizes the progress of studies conducted in 1971 and 1972 to determine the effects of entrainment of Hudson River organisms by the Indian Point nuclear power station" (p. xviii).

"This report summarizes the progress of studies conducted in 1973 to determine the effects on Hudson River organisms of entrainment by the Indian Point nuclear power station" with emphasis "on the potential effects of entrainment on organisms passing through the plant's condenser cooling system" (p. xxi).

This study had three objectives: 1) to develop a method for the quantitative determination of total organic bound chlorine in water and biological samples using Source-Excited X-Ray Fluorescence, 2) to provide training in the use of analytical techniques for students from different disciplines, and 3) to use an interdisciplinary approach involving students of biology, chemistry, and physics to investigate a complex environmental problem. Only the first objective is treated in detail in this volume.