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June 15, 1992 �ZA�� <br /> Fire Engine Company No. 2, Stockton, California <br /> The sample containers were labeled in the field with the site identification, monitoring well <br /> number and depth, and date, and promptly placed in iced storage for transport to the <br /> laboratory The technician or geologist initiated Chain of Custody Records in the field that <br /> accompanied the samples to a laboratory certified by the State of Califorrua for the analyses <br /> requested. Samples were transported to the laboratory promptly Samples in our custody <br /> were properly disposed of after their useful life had expired <br /> Evaluation of Ground-Water Gradient <br /> The elevation of the top of each well casing has previously been measured by RESNA using <br /> well MW-4 as the datum point The U S G S Quadrangle Map, Stockton West, California <br /> 1976, was used to evaluate the elevation of the ground surface around well MW-4 The <br /> approximate elevation of the well casing and the depth to ground water measured in each <br /> monitoring well were combined to evaluate the relative elevation of the ground-water <br /> surface in each well and the slope of the ground-water surface across the site <br /> 0 <br /> 38 09-4 <br /> �-4 <br />