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-CA - BRM <br /> q <br /> itl �? i3 � � 14 <br /> January 15, 1998 <br /> Mr Alex Perez <br /> Shell Oil Products Company <br /> P O Box 8080 <br /> Martinez, California 94553 <br /> Re Quarterly Monitoring Report - Fourth Quarter 1997 <br /> Shell Service Station <br /> 7910 Lower Sacramento Road <br /> Stockton, California <br /> WIC 4204-7524-0808 <br /> Dear Mr Perez <br /> This Quarterly Monitoring Report describes the recently completed activities associated with <br /> ground water monitoring and sampling at the referenced s.te (Plates I and 2) This report was <br /> prepared to meet reporting requirements issued by the Regional Water Quality Control Board, <br /> Central Malley Region and the San Joaquin County Environmental Health Division <br /> ` --Quarterly Monitoring & Sampling Summary <br /> Ground water monitoring and sampling for this'quarter are summarized below <br /> • Blaine Tech Services, Inc (Blaine) of San Jose, California measured ground water levels <br /> aria collected samples from Wells MW-1 through MW-3 on November 21, 1997 <br /> Samples were transported to Sequoia Analytical (Sequoia) in Redwood City, California <br /> for chemical analysis <br /> CAMBRIA Cambria Environmental Technology, Inc (Cambria) evaluated water-level measurement <br /> ENVIRONMENTAL data and prepared a ground water contour/chemical concentration map (Plate 2) <br /> TECHNOLOGY,INC Ground water samples collected from Wells MW-1 through MW-3 contained ND levels <br /> 270 PERKINS STREET of TPPH and benzene MTBE concentrations in all three wells ranged from ND to 8 8 <br /> P 0 Box 259 ppb by EPA Method 8020 <br /> SONOMA, <br /> CA 95476 <br /> 9354850 <br /> FAz i(07 935,6649 <br /> t <br />