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BLAINE 1680 ROGERS AVENUE <br /> TECH SERVICES_ SAN JOS1:,CA 95112-1105 <br /> (408)573-7771 FAX <br /> • (408)573-0555 PHONE <br /> ° CONTRACTOR'S UCENSE#746684 <br /> www blainetech com <br /> � e <br /> M+b <br /> December 10,2002 <br /> Karen Petryna <br /> Shell Oil Products US <br /> P.O. Box 7869 <br /> Burbank,CA 91510-7869 <br /> Fourth Quarter 2002 Groundwater Monitoring at <br /> Former Texaco Service Station <br /> 440 West Charter Way <br /> Stockton,CA <br /> Monitoring performed on November 13,2002 <br /> Groundwater Monitoring Report 021113-JK-1 <br /> This report covers the routine monitoring of groundwater wells at this former Texaco facility. In <br /> accordance with standard procedures that conform to Regional Water Quality Control Board <br /> requirements,routine field data collection includes depth to water,total well depth,thickness of <br /> any separate immiscible layer,water column volume, calculated purge volume(if applicable), <br /> elapsed evacuation time (if applicable),total volume of water removed(if applicable), and <br /> standard water parameter instrument readings. Sample matenO is collected, contained, stored, <br /> and transported to the laboratory in conformance with EPA standards. Purgewater(if applicable) <br /> is,likewise,collected and transported to the Martinez Refining Company. <br /> Basic field information is presented alongside analytical values excerpted from the laboratory <br /> report in the cumulative table of WELL CONCENTRATIONS. The full analytical report for <br /> the most recent samples and the field data sheets are attached to this report. <br /> At a Unum,Blaine Tech Services,Inc. field personnel are certified on completion of a forty- <br /> hour Hazardous Materials and Emergency Response training course per 29 CFR 1910.120 Field <br /> personnel are also enrolled in annual eight-hour refresher courses. <br />