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BLAINE . <br />TECH SERVICESme <br />GROUNDWATER SAMPLING SPECIALISTS <br />SINCE 1963 <br />September 3, 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 />620 West Charter Way <br />Stockton, CA <br />Monitoring performed on August 9, 2004 <br />Groundwater Monitoring Report 040809 -EB -1 <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 (1f 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 0 <br />SAN JOSE SACRAMENTO LOS ANGEM SAN MEGo <br />1600 ROGERS AVENUE SAN JOSE, CA 945112-1105 (4D0) 673 0866 FAX (406) $73-7771 )IG 746664 www blafnetoch Com <br />