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—,--rte <br /> "IM(4OTHY DRIVE <br /> 1Y��BLAINE RECEJosE CA 95133 <br /> TECH SERVIrESINCMAR 08) 293-8773 <br /> Inst <br /> February 28, 1994 <br /> Shell Oil Company <br /> P O Box 5278 <br /> Concord, CA 94520-9998 <br /> Attn Darnel T Kirk <br /> SITE <br /> Snell WIC 9-204-7524-2408 <br /> 4445 Pershing Avenue <br /> Stockton, California <br /> QUARTER <br /> 1 st quarter of 1994 <br /> QUARTERLY GROUNDWATER SAMPLING REPORT 940215-K-2 <br /> This report contains data collected dunna routine inspection, gauging and sampling of <br /> groundwater monitoring wells performea by Blaine Tech Services, Inc in response to the <br /> request of the consultant who is oversee,ng 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 ti�ell <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 v,ater 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 kNTU) In the interest of simplicity, fundamental <br /> information is tabulated here, while the t;ulk of the information is turned over directly to <br /> the consultant v,ho is making professional interpretations and e,.aluations of the conditions <br /> at the site <br /> Biaum Tech Services,inc 940215-k 2 Shell 4445 Persiung Ave,Stockton page 1 <br />