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I <br /> F { <br /> FI <br /> BLAINS <br /> TECH SERVICES,oc. I <br /> :4 <br /> GROUNDWATER SAMPLING SPECIAL(STS <br /> SINCE 1988 <br /> E F <br /> ii <br /> May 2, 2005 <br /> Ee <br /> Karen Petryna <br /> Shell Oil Products US <br /> 20945 South Wilmington Avenue <br /> Carson, CA 90810 <br /> Second Quarter 2005 Groundwater Monitoring at <br /> Shell-branded Service Station <br /> 341 East Main Street <br /> Ripon, CA <br /> . Monitoring performed on April 8,2005 <br /> i <br /> Groundwater Monitoring Report 050408-KB-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 Ftlie 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 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 /> GAN JOIE EACRl1UlENTO Ll58 ANAEIES PAN DIEGO <br /> WDWIDEREAVENUE 80401G.COL"Ilk-17011 (408)675-D666 PAX (408103-7771 U10. 746694 www.blainateeb.com <br />