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i <br /> ettler — ran inc . <br /> 9 Y <br /> general contractors <br /> July 8, 1992 <br /> Shell Oil Company <br /> Post Office Box 4023 <br /> Concord, California 94520 <br /> Attention: Ms. Karen Clark <br /> Reference: Shell Service Station <br /> 6131 Pacific Avenue <br /> Stockton, California <br /> Gentlemen: <br /> On July 6, 1992 Gettler-Ryan Inc. technicians certified the monitoring <br /> equipment at the above referenced location. At the time of the inspection all <br /> of the monitoring equipment was found to be fully functional, operating <br /> correctly, and calibrated. A tank complex monitoring well inspection was also <br /> performed at the same time. <br /> Please find the corresponding data and survey sheets enclosed. <br /> Please call me if you should have any questions or comments. <br /> Sincerely, <br /> Timothy J. Dahl <br /> 2150 west winton avenue hayward, c a I i f a r n i a 94545 - 12 1 0 (41 5) 783-7500 <br />