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BLAINE JOSE,985 Y DRIVE <br /> SAN JOSE, CA 95133 <br /> -77,7-]c (408)995-5535 <br /> TECH SERVICES INC FAX (408)293-8773 <br /> RECEIVED <br /> J U 14 - b 194 ]tme 1, 1994 <br /> Shell Oil Company Ad�- -•}"'-' <br /> P O Box 5278 <br /> Concord, CA 94520-9998 <br /> Attn Daniel T Kirk <br /> SITE <br /> Shell WIC #204-7524-2408 <br /> 4445 Pershing Avenue <br /> Stockton, California <br /> QUARTER. <br /> 2nd quarter of 1994 <br /> QUARTERLY GROUNDWATER SAMPLING REPORT 940510-1.,-3 <br /> Thus 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 water was further inspected for the presence of irnmiscibles which may be present as <br /> a then 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 1s 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 /> Blame Tech Semen,I=940510-,3 Shell 4445 Pershing Ave,Stockton page 1 <br />