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UJ/26/9:/ Jti PAA 91b 32 �'Uy USA 1TSL: -' LCJJ, UUJ/UU3 <br /> Kit Custis <br /> January 26, 1999 <br /> Page 2 <br /> Given these caveats, the Human and Ecological Risk Division has reviewed the estimates of risk <br /> and hazard, and agrees that they are technically sound. All cancer risk was substantially lower- <br /> than 1 x 10', and all hazard estimates were substantially lower than unity (1). This was true for <br /> all receptors and exposed persons evaluated_ Therefore, based upon the site sampling data <br /> presented in the.risk assessment,no significant risk or hazard is expected. Use of ground water <br /> for drinking or other beneficial uses, which was not a part of this assessment, is expected to <br /> remain under the purview of the CVRWQCB, and nothing about this review is to be construed to <br /> represent an opinion of DTSC on the beneficial uses of this resource. <br /> Please feel free to call (916-327-2517)with any questions. <br /> Sincerely;_ <br /> Stephen M. DiZio, Ph.D. <br /> Senior Toxicologist <br /> Human and Ecological Risk Division <br /> cc: Mr. Dan Lapporte <br /> Chevron Pipe Line Company <br /> 4000 Executive Parkway, BR8 <br /> San Ramon, CA 94583 ` f <br />