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4 II <br /> I i <br /> I 985 TIMOTHY <br /> BLAINE DRIVE <br /> 95133 <br /> f� SERVICES <br /> SAN JOSE C?, 95133 , <br /> " (408) 995 5535 <br /> TECH SERVICES INC FAX (408) 293 877? <br /> March 2, 1993 <br /> RECEIVED <br /> Shell Oil Company MAR 2 2 1993 , <br /> P O Box 5278 _— <br /> Concord, CA 94520-999$ <br /> Attn. Daniel T Kirk <br /> 51TE <br /> Shell WIC#204-7524-0808 <br /> 7910 Lower Sacramento Road <br /> Stockton, California <br /> QunxTM <br /> 1 st quarter of 1993 <br /> QUARTERLY GROUNDWATER SAMPLING REPORT 930219-Y-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 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 information is turned over directly to <br /> the consultant who is making professional interpretations and evaluations of the conditions <br /> at the site <br /> Elam Tern Semces,Inc- 930219-Y-2 Shell 7910 Lower Sacramento.Stockton page 1 <br />