Paulsen, S. G.. U.S. Environmental Protection Agency, paulsen@mail.cor.epa.gov
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COMPARATIVE ASSESSMENTS - A MISSING PERSPECTIVE IN RISK ASSESSMENT
 
Risk assessment has become the dominant conceptual process within the U.S. Environmental Protection Agency. There is however, little description within the Ecological Risk Assessment Guidelines of the role that monitoring plays or the role that comparative assessments play (other than in the problem formulation stages) in the risk assessment paradigm. In this paper, I present results from lakes studies in the northeast and stream studies in the mid-Atlantic region, where monitoring was specifically designed to result in a comparative assessment of ecological condition across these regions and a relative ranking of the stressors impacting lakes and streams. This type of assessment is often the only risk assessment necessary for many agencies to make their decisions. The importance of comparative assessments appears to be a critical missing ingredient in the formal Risk Assessment Paradigm and presents important new opportunities for assessing risk to aquatic communities in the future.
 
Day: Friday, Feb. 5
Time: 09:30 - 09:45am
Location: Hilton of Santa Fe
 
Code: SS11FR0930H