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985 TIMOTHY DRIVE <br /> BLAINE <br /> SAN JOSE, CA 95133 <br /> t (408) 995-5535 <br /> TECH SERVICES INC FAX (408) 293-8773 <br /> SeptemtR E i V E D <br /> SEP 1 2 1994 <br /> Shell Oil Company <br /> P O Box 4023 'LU <br /> � <br /> Concord, CA 94524 <br /> Attn Daniel T Kirk <br /> SITE <br /> Shell WIC 9204-7524-4305 <br /> 620 W Charter Way <br /> Stockton, California <br /> QUARTER <br /> 3rd quarter of 1994 <br /> QUARTERLY GROUNDWATER SAMPLING REPORT 940816-E-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 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 in 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 samuling, 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 Semcm Inc 940816 E-2 Shell 620 W Charter Way,Stockton page l <br />