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V'L/ II/YUUD 1'L-4Y FAX 0012/OT$ <br /> Jerry Lile Page 7 <br /> February 2,2005 <br /> the complete data sets as well as the data sets proposed for use in the HHRA In electronic <br /> format to ensure site characterization Is adequate for HHRA purposes,and (3)preparation <br /> of the revised HHRH consistent with comments provided In HERD's September 9,2004 <br /> and September 28, 2004 memoranda using the DTSCIHERO approved HHRA data set. <br /> REFERENCES <br /> Department of Toxic Substances Control(OTSC), 1099. Preliminary Endangerment <br /> Assessment Guldance Manual. <br /> DISC, 2003. Advisory—Active Soil Gas Investigations. January 28,2003. <br /> OTSC, 2004. Guidance for the Eveluaflon and Mitigation of Subsurface Vapor Intruslon <br /> to IndaorAir. December 15,2004. <br /> SECOR International incorporated,2003, Well Installation and DPE Feasibility Test <br /> Report. January 24,2003. <br /> U.S; EPA, 1989. 'Risk Assessment Guidance for Superfund. Volume 1. Human Health <br /> Evaluatlon Manual. Part A. December 1989, <br /> U.S. EPA, 1992. Final Guidance on Data Useability in Risk Assessment(Part A). April <br /> 1992. <br /> U.S. EPA, 1996. Soil Screening Guidance:Technical Background Document. <br /> EPA1540IR-951128, May 1996. <br /> r I <br /> Reviewed by: David L.Ber y, Ph.D. <br /> • Senior Toxioologlst . . <br /> Science, Pollution Prevention and Technology Program <br /> Human and Ecotogicat Risk Division <br /> o5azozx.aoc - . <br />