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BLAINE A JOSE C DRIVE <br /> ' f� r SAN JOSE CA S51 v3 <br /> 15 <br /> TECH H SERVICES INC FAX (408) 293 87'3 <br /> J <br /> March 2, I992 <br /> Shell Oil Company <br /> P O Box 5275 <br /> Concord, CA 94520-9998 <br /> Attn Daniel T Kirk <br /> S= <br /> Shell WIC #204-7524-4305 <br /> 620 West Charter Way <br /> Stockton, California <br /> QLARTa <br /> Istquarter of 1993 <br /> QUARTERLY GROUNDWATER SAMPLING REPORT 930219-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 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 /> pnor 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 immiscnbles 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 bulls 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 /> Blum Tern Services,Inc. 930219-Y-1 Shell 620 W Charter,Ssadcwn page 1 <br />