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1 BLAINE <br /> r - 985 TIMOTHY DRIVE <br /> TECH <br /> �1 SAN JOSE CA 95733 <br /> I-- i ! ECH SERVICES INC FAX (408) 293-$733 <br /> J <br /> March 3, 1993 / <br /> RECEIVED <br /> MAR 2' 2 1993 <br /> Shell Oil Company - - <br /> P O Box 5278 <br /> Concord, CA 94520-9998 <br /> Attn Daniel T Kirk <br /> STM <br /> Shell WIC#204-7884-0901 <br /> 3725 S Tracy Blvd. <br /> Tracy, California <br /> QUARrnt <br /> I st quarter of 1993 <br /> QUARTERLY GROUNDWATER SAMPLING REPORT 930220-Y-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 an 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 the 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 mformatnon 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 Semaea Inc. 930220-Y-1 Shell 3725 s 'Tracy.Tracy page 1 <br />