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<br />WfJI SYMry ~ SYMry AEYY <br />LWq fsmpnWSYUnm, <br />3.1 Overview of Approach <br />• United States Environmental Protection Agency (EPA) manuals, together entitled Risk <br />Assessment Guidance for Superfund (EPA, 1989a and b). <br />- The Human Health Evaluation Manual (RAGS I); guidance for developing human <br />health risk information. <br />- Environmental Evaluation Manual (Volume II) (RAGS II); E;uidance for <br />environmental risk assessment. <br />• Strictly applicable only to EPA-administered Superfund sites, but guidance Ex evaluating <br />risk has for yeazs been widely recognized as most systematic approach to evauating risk. <br />- goal of protecting human health and the environment. <br />• Preliminary qualitative discussion of potential risks to human health and the environment <br />associated with these two small mining properties generally follows RAGS <br />- Evaluation uses EPA's approach to assess the basic elements of source, exposure <br />pathways, receptors, and uptake mechanisms. <br />• Available site information reviewed to: <br />1. determine basic site chazacteristics; and <br />2, identify potential exposure pathways and exposure points. <br />H:\USEASU4'M W M9lALLETIFAS 9f \ W SUNSUN PRE <br /> <br />Page 13 <br />