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BLAINE 1680 ROGERS AVENUE <br /> TECH SERVICES„ SAN JOSE, CA 95112-1105 <br /> (408)573.7771 FAX <br /> to ` 'app (408)573-0555 PHONE <br /> 2c ?p CONTRACTOR'S LICENSE#746684 <br /> www blainetech com <br /> ANp �yy <br /> April 6,2004 <br /> Karen Petryna <br /> Shell Oil Products US <br /> P O Box 7869 <br /> Burbank, CA 91510-7869 <br /> First Quarter 2004 Groundwater Monitoring at <br /> Former Shell Service Station <br /> 1267 Country Club <br /> Stockton, CA <br /> Monitoring performed on February 23, 2004 <br /> Groundwater Monitoring Report 040223-RM-1 <br /> This report covers the routine moratornzg 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 peisonnel are certified on completion of a forty- <br /> hour Hazaidous Materials and Emergency Response naming course per 29 CFR 1910 120 Field <br /> personnel aie also enrolled in aiuivaI eight-hour iefresher courses <br />