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California Regional Water Quality Control Board . <br /> vCentral Valley Region <br /> Winston H.Hickox Steven T.Butler,Chair Gray Davis <br /> Secretaryfor Sacramento Main Office Governor <br /> Environ,nental Internet Address: http://www.swrcb.ca.gov/-mgcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> 8 May 2000 <br /> Ms. Katie Hower <br /> Chevron Environmental Management Company <br /> 6001 Bollinger Canyon Road <br /> P. O. Box 6012 <br /> San Ramon, CA 94583-0712 <br /> HEALTH RISK ASSESSMENT, FORMER LYOTH LOADING STATION, CHEVRON PIPE <br /> LINE, TRACY, SAN JOAQUIN COUNTY <br /> Enclosed is a memorandum from Ms. Susan Knadle of Office of Environmental Health Hazard <br /> Assessment (OEHHA) on the health risk assessment (HRA) for the former Lyoth Loading Station in <br /> Tracy. <br /> As the memorandum states, there is too much uncertainty in the HRA due to insufficient samples and the <br /> model used. By 12 June 2000, please address OEHHA's comments. You may send your responses (with <br /> a copy to me) directly to Ms. Knadle at the address shown in the memorandum. <br /> If you have any questions, you may call me at (916) 255-3081 or e-mail at isorenp@rb5s.swrcb.ca.gov. <br /> P�iP'S. IS REO NA <br /> Associate Engineer <br /> Enclosure <br /> cc: Ms. Susan Knadle, Office of Environmental Health Hazard Assessment, Sacramento <br /> San Joaquin County Public Health Services, Stockton <br /> Mr. James Simpson, Stanislaus County Department of Environmental Resources, Modesto <br /> Ms. Dawn Zemo, Geomatrix Consultants, San Francisco <br /> Ms. Penny Tse, Chevron Environmental Management Company, San Ramon <br /> California Environmental Protection Agency <br /> cv*Recycled Paper <br />