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FIGURE 4-1 <br /> THE EXPOSURE ASSESSMENT PROCESS* <br /> STEP 1 STEP 2 <br /> Characterize Exposure Identify Exposure <br /> Setting Pathways <br /> •Physical Environment •Chemical Source <br /> Release <br /> •Potentially Exposed <br /> Populations • Exposure Pomt <br /> •Exposure Route <br /> STEP 3 <br /> Quantify Exposure <br /> Exposure Intake <br /> Concentrations Variables <br /> Pathway- <br /> Specific <br /> Exposure <br /> *Taken from the USEPA's Risk Assessment Guidance for S}perfund. Volume I. <br /> Human Health Evaluation Manual (Part A).Interim Final December 1989 <br /> A WvJslon of Mclarsn/Hart <br /> B921201TC <br />