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BLAINE <br /> TECH SERVICES,.c <br /> GROUNDWATER SAMPLING SPECIALISTS <br /> SINCE 1995 <br /> October 31, 2005 <br /> Denis Brown <br /> Shell Oil Products US <br /> 20945 South Wilmington Avenue <br /> Carson, CA 90810 <br /> Fourth Quarter 2005 Groundwater Monitoring at <br /> Former Shell-branded Service Station <br /> 1071 North Main Street <br /> Manteca, CA <br /> Monitoring performed on October 10, 2005 <br /> Groundwater Monitoring Report 051010-BR-1 <br /> This report covers the routine monitoring of groundwater wells at this former Shell-branded <br /> facility In accordance with standard procedures that conform to Regional Water Quality Control <br /> Board requirements, routine field data collection includes depth to water,total well depth, <br /> thickness of any separate immiscible layer, water column volume, calculated purge volume (if <br /> applicable), elapsed evacuation time (if applicable), total volume of water removed (if <br /> applicable), and standard water parameter instrument readings Sample material is collected, <br /> contained, stored, and transported to the laboratory in conformance with EPA standards <br /> Purgewater(if applicable) is, likewise, collected and transported to the Martinez Refining <br /> 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 /> SAN JOSE SACRAMENTO LOS ANGELES SAN DIEGO <br /> 1686 ROGERS AVENUE SAN JOSE CA 95112 1105 (4081577 0555 FAX (405)573 7771 LIC 746684 www blalnelech com <br />