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lei BLAINE <br /> TECH SERVICES. <br /> GROUNDWATER SAMPLING SPECIALISTS <br /> SINCE 1983 <br /> August 27, 2004 <br /> Karen Petryna <br /> Shell Oil Products US <br /> P.O. Box 7869 <br /> Burbank, CA 91510-7869 <br /> Third Quarter 2004 Groundwater Monitoring at <br /> Shell-branded Service Station <br /> 2494 Fremont Street <br /> Stockton, CA <br /> Monitoring performed on July 26,2004 <br /> Groundwater Monitoring Report 040726-EB-2 <br /> This report covers the routine monitoring of groundwater wells at this Shell-branded 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 /> i <br /> SAN JOSE SACRANISK110 LOS ANGELES SAN DIEGO <br /> 1660 ROGERS AVENUE SAN JOSE.CA 96112-1105 1408)573-0565 FAX I4"673-7771 LIC. 746604 www.b1Q1n*t*ch.cam <br />