ABSTRACT
Since the invention of the risk assessment paradigm in the early 1980s, the risk assessment process and its products have become key elements in public and environmental health decision making. Although risk assessment methods and policies have changed since the early 1980s, the basic risk assessment paradigm has remained relatively stable. This makes it possible to generate a risk assessment appropriate 538for any given time period since the 1980s by using risk assessment methods and data inputs from that time and, thus, to reconstruct what risk assessors and other professionals of that period knew or should have known about the human health or environmental risks posed by a facility, activity, or site.
