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BLAINE JOSE,985 Y DRi' <br /> � SAN JOSE, CA 951 <br /> (408) 995-55 <br /> TECH SERVICESINC FAX (408) 293-87- <br /> RECEIVED APnI13, 1995 <br /> Shell Oil Company APR 1 l 1995 <br /> P O Box 4023 Am% ET <br /> Concord, CA 9454 <br /> Attn Darnel T Kirk <br /> SITE <br /> Shell WIC #204-7524-2408 <br /> 4445 Pershing Avenue <br /> Stockton, California <br /> QUARTER <br /> 1 st quarter of 1995 <br />• <br /> QUARTERLY GROUNDWATER SAMPLING REPORT 950316-S-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 dunng 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 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 Inonitore€I with. <br /> Instruments that measure electrical conductivity (EC), potential hydrogen (pl ), 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 /> Blaine Tech Semcm Inc 950316-S-1 Shell 4445 Pershing Ave,Stockton page 1 <br />