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BLAINE <br /> TECH SERVICES <br /> GROUNDWATER SAMPLING SPECIALISTS <br /> SINCE 1483 <br /> November 19, 2004 <br /> Karen Petryna <br /> Shell Oil Products US <br /> 20945 South Wilmington Avenue <br /> Carson, CA 90810 <br /> Fourth Quarter 2004 Groundwater Monitoring at <br /> Former Shell Service Station <br /> 1313 East Charter Way <br /> Stockton, CA <br /> • Monitoring performed on October 27, 2004 <br /> Groundwater Monitoring Report 041027-KB-2 <br /> This report covers the routine monitoring of groundwater wells at this former Shell 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 material 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 minimum,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 /> IM JOSE L%CRAMENTO LOS ANGELES SAKI DIEGO <br /> 169011OGEit3 AVENUE SM JOSE,CA 95112-1103 (4D9)8771-0= FAX (403)8734771 t1C 746654 www DialneieCh COM <br />