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BLAINS <br /> 985 TIMOTHY DRIVE <br /> SAN JOSE CA 9513 <br /> TECH SERVICES INC FAX �4og;2s�=8�� <br /> i Febniary 11, 1993 �" 1 <br /> RECEIVED <br /> FEB 03 1993 <br /> Shell Oil Company �--��L f <br /> P O Box 5278 <br /> Concord, CA 94520-9998 <br /> Ann Daniel T Kirk <br /> SUE <br /> Shell WIC# 204-4416-0202 <br /> 420 W Kettleman Lane <br /> Lodi, California <br /> QUARTER <br /> 1 st quarter of 1993 <br /> I <br /> QUARTERLY GROUNDWATER SAMPLING REPORT 930125-N-1 <br /> This report contams 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 winch 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 /> Blume Tech semis,Inc. 930125 N-1 Shell 420 W Kemleman, page 1 <br />