The U.S. Environmental Protection Agency has recognized the need to develop
a framework for human health risk assessment that puts a perspective on th
e approaches in practice throughout the Agency. In response, the USEPA's Ri
sk Assessment Forum has begun the process of developing a framework for hum
an health risk assessment. This paper provides some additional background t
o the previous review of the framework efforts and notes the Agency's extra
mural efforts to begin the process of integrating and harmonizing risk asse
ssment approaches for all human health endpoints.