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BLAINE <br /> TECH SERVICES,, <br /> GROUNDWATER SAMPLING SPECIALISTS <br /> SINCE 1985 <br /> March 7, 2005 <br /> Karen Petryna <br /> Shell Oil Products US <br /> 20945 South Wilmington Avenue <br /> Carson, CA 90810 <br /> First Quarter 2005 Groundwater Monitoring at <br /> Shell-branded Service Station <br /> 341 East Main Street <br /> Ripon,CA <br /> • Monitoring performed on January 27, 2005 <br /> Groundwater Monitoring Report 050127-BC-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, appropriate 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 Purge <br /> water(if applicable) is, likewise, collected and transported to the Shell Martinez Manufacturing <br /> Complex <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 1 ech 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 X*E SACRAMENTO 1.08 ANCE1.E8 SAN 01E00 <br /> 1600 WMIRI AVENUE SAM JOU.CA 951 1 2-11 011 (40911 a73 A668 FAX t408)873-7771 UC 746604 www blalnot*od morn <br />