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BLAINE985 TIMOTHY DRIVE <br /> I SAN JOSE CA 9513: <br /> / <br /> TECH c V E RVICE c V E N C FAX (408) 293-877 <br /> " <br /> E i ; <br /> I <br /> I <br /> I E <br /> January 19, 1993 <br /> 9v -oz o <br /> RECEIVED <br /> Shell Oil Company FEB 1 5 1993 <br /> P O Box 5278 y <br /> � <br /> Concord, CA 94520-9998 �• ..• <br /> Attn Daniel T Kirk <br /> SM <br /> Shell WIC#204-7525-0104 <br /> 6131 Pacific Avenue <br /> Stockton, California <br /> QUARTER <br /> 1 st quarter of 1993 <br /> QUARTERLY GROUNDWATER SAMPLING REPORT 930111-T-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 nmmiscnbles 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 /> kr L). Al intervals during the evacuation phase, the purge water was monitored whin <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 />• <br /> Blaine Tech Services,Inc 930111-T-2 Shell 6131 Pacific.Stodc= page 1 <br />