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Office of Environmental Health Hazard Assessment <br /> Joan E.Denton,Pli.D.,Director <br /> Headquarters• 1001 I Street•Sacramento,California 95814 <br /> Mailing Address: P.O.Box 4010•Sacramento,California 95812-4010 <br /> Oakland Office•Mailing Address: 1515 Clay Street, 16`h Floor•Oakland,California 94612 . <br /> ��LILOnN� <br /> Linda S.Adams Arnold Schwarzenegger <br /> Secretary for Environmental Protection <br /> � � Governor <br /> MEMORANDUM <br /> OCT 2 3 2006 <br /> PU`dQCB-CVR <br /> TO: C. Dean Hubbard, Engineering Geologist FREStIO, r`ALIE <br /> Project Manager <br /> Central Valley Regional Water Quality Control Board <br /> 1685 E Street <br /> Fresno, California 93706 <br /> FCD�ECEffEo <br /> FROM: Hristo Hristov, MD, Ph.D., M.Env.Sc. <br /> Integrated Risk Assessment Branch JAN 1 7 2007 <br /> DATE: October 13, 2006 ENPERMIT%SNT ERVICESTH <br /> SUBJECT: HUMAN HEALTH RISK ASSESSMENT, TAOC TRACY PUMP STATION, <br /> TRACY, CALIFORNIA, ADDITIONAL INFORMATION FOR THE HUMAN <br /> HEALTH RISK ASSESSMENT TAOC TRACY PUMP STATION, TRACY, <br /> CALIFORNIA; SOIL INVESTIGATION AND GROUNDWATER <br /> MONITORING REPORT, FORMER TAOC TRACY PUMP STATION, <br /> TRACY, CALIFORNIA; REVIEW OF SOIL INVESTIGATION AND <br /> GROUNDWATER MONITORING REPORT-FORMER TAOC TRACY PUMP <br /> STATION (880 BEECHNUT), TRACY, SAN JOAQUIN COUNTY, <br /> RESPONSE TO COMMENTS AND WORK PLAN FOR ADDITIONAL <br /> INVESTIGATION TAOC TRACY PUMP STATION (RENOWN PROPERTY), <br /> TRACY, CALIFORNIA. <br /> SWRCB #R5-05-21 OEHHA# 880126-01 <br /> Document Reviewed <br /> (Italicized text is quoted from the documents provided for review.) <br /> Following the RWQCB letter, dated May 10, 2006 the Integrated Risk Assessment Branch <br /> (IRAB) of the Office of Environmental Health Hazard Assessment (OEHHA) reviewed the <br /> Human Health Risk Assessment document and the Additional Information for the Human Health <br /> Risk Assessment memorandum. The Soil Investigation and Groundwater Monitoring Report, <br /> and the two related memoranda were provided for reference purposes only. Accordingly, <br /> OEHHA used these documents to clarify issues arising from the review of the main risk <br /> assessment document,where possible. <br /> California Environmental Protection Agency <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. <br /> �s <br /> -0 Printed on Recycled Paper <br />