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BLAINS <br /> 985 TIMOTHY DRIVE <br /> SAN JOSE CA 95133 <br /> TECH (408) 995-5535 <br /> SERVICES INC FAX (408)293-8773 <br /> I � I <br /> q D--o:-;� <br /> I I <br /> December 16, 1993 <br /> I <br /> Shell Oil Company <br /> P O Box 5278 <br /> Concord, CA 9452.0-9998 _.. <br /> Attn Daniel T Kirk <br /> SITE <br /> Shell WIC 4204-7525-0104 <br /> 5131 Pacific Avenue <br /> Stockton, California <br /> QU 4RTER <br /> -ith quarter of 1993 <br /> QUARTERLY GROUNDWATER S VNIPLING REPORT 931122-F-2 <br /> This report contains data collected durina 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 «ork 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 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 shin 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 Services,Inc 931122F2 Shell 6131 Pacific Ave,Stockton page i <br />