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C <br /> d <br /> Ig <br /> �u <br /> nd <br /> Dere.nber 18, 1991 I <br /> Former Unocal Station 2859, Stockton, California <br /> Ground�i/aEer�'Vell Survev <br /> omPanY(Moldenhauer) of Davis. California, (Registered Civil <br /> Moldenhauer Engineering C <br /> Engineer No. 17381) surveyed <br /> the <br /> elel va positionsons and <br /> of the wellheads of monitoring 1 to t V Son September 1 <br /> 2l,September atter <br /> o <br /> measured the monitoring w--lls with respect to the City of Stockton bench mark 2S-2 at the <br /> intersection of Harding Way and Pacific Avenue. <br /> According to Moldenhauer personnel, ,Bench Mark 2S-2 is referenced to the United States <br /> Geodetic Survey with an elevation of 10.33 feet above mean sea level. The elevation of the <br /> monitoring wells were ed to the neaenced rest 0.1 foowithin t foot of The elev3atiolnsMark 2S-2,were taken atla permizontal <br /> anent <br /> distances were measured <br /> notch or arrow on the well casing. <br /> Sam le Lobelin and Handling <br /> Nater samples were preserved in laboratory-cleaned, 0-millilievials <br /> that contained <br /> concentrated hydrochloric acid as a preservative. <br /> ewa �lwatersamplesated with <br /> Teflon-lined lids to eliminate air bubbles. <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 coriced storage for transport to the <br /> ompanied <br /> laboratory. The technician initiated Chain of State of California fors in thustody Reethefielanakvsesd that crequested. <br /> the samples to a laboratory certified by <br /> tile Samples were transported to the laboratory promptly. Samples In our custody were properly <br /> disposed of after their useful life had expired. <br /> 38012-7 <br />