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BLAINE 985 TIMOTHY DRIVE <br /> JOSE, <br /> SAN JOSS, CA 95133 <br /> (408) 995-5535 <br /> TECH SERVICES INC FAX (408) 293-8773 <br /> June 1, 1994 <br /> Shell Oil Company <br /> PO Box 5278 RECEIVED <br /> Concord, CA 94520-9998 J U N _ 6 1994 <br /> Attn Daniel T Kirk <br /> SITE <br /> Shell WIC #204-7524-4305 <br /> 520 W Charter Way <br /> Stockton, California <br /> QUARTER <br /> 2nd quarter of 1994 <br /> QUARTERLY GROUNDWATER SAMPLING REPORT 940510-K-1 <br /> This report contains data collected during routine inspection, gauging and sampling of <br /> groundwater monitoring wells performed by Blaine Tech Services, Inc in response to the <br /> request of the consultant who is overseeing work at this site on behalf of our mutual client, <br /> Shell Oil Company Data collected m the course of our field work is presented in a <br /> TABLE OF WELL GAUGING DATA- The field information was collected during our <br /> preliminary gauging and inspection of the wells, the subsequent evacuation of each well <br /> prior to sampling, and at the time of sampling <br /> Measurements taken include the total depth of the well and the depth to water The surface <br /> of water was further inspected for the presence of immiscibles which may be present as <br /> a thin film (a sheen on the surface of the water) or as a measurable free product zone <br /> (FPZ) At intervals during the evacuation phase, the purge water was monitored with <br /> instruments that measure electrical conductivity (EC), potential hydrogen (pH), tempera- <br /> ture (degrees Fahrenheit), and turbidity (NTU) In the interest of simplicity, fundamental <br /> information is tabulated here, while the bulk of the information is turned over directly to <br /> the consultant who is making professional interpretations and evaluations of the conditions <br /> at the site <br /> Blaine Tech Serncek lac-940510-K-1 Shell 620 W Charter Way,St ad= page 1 <br />