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' <br /> 985 TIMOTHY DRIVE <br /> BLAINE <br /> I SAN JOSE, CA 95133 <br /> TECH <br /> SERVICES (408) 995-5535 <br /> TECH ERVICES INC FAX(448) 293-8773 <br /> I <br /> C)C <br /> September 17, 1993 <br /> Shell O11 Company <br /> .RECEIVED <br /> P O Box 5278 SEP 2 71993 <br /> Concord, CA 94520-9995 <br /> Attn Daniel T Kirk <br /> SITE <br /> Shell WIC 4204-7525-0104 <br /> 6131 Pac,fic Avenue <br /> Stockton, California <br /> QLTARTER <br /> 3rd quarter of 1993 <br /> QUARTERLY GROUNDWATER SAMPLING REPORT 930826-W-2 <br /> This report contains data collected during routine inspection, gauging and sampling of <br /> groundwater monitoring wells performed by Blaine Tech Services, Inc in reponse to the <br /> request of the consultant who is overseeing work at this site on behalf of our mutual client, <br /> Sheil Oil Company Data collected in the course of our field work is presented in a <br /> TABLE OF NATLL GAUGING DATA The field information was collected dunng 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 measuraole free proauct 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 (NTL) 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 /> Blame Tech Service,Inc 930826 W-2 Shell 6131 Pamir Ave Stockton page I <br />