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1 <br /> z. <br /> BLAINE <br /> TECH SERVICES m. <br /> GROUNDWATER SAMPLING SPECIALISTS <br /> SINCE 1985 <br /> December 10,2004 <br /> Karen Petryna <br /> Shell Oil Products US <br /> 20945 South Wilmington Avenue <br /> Carson, CA 90810 <br /> Fourth Quarter 2004 Groundwater Monitoring at <br /> Shell-branded Service Station M <br /> ti 341 East Main Street <br /> Ripon, CA } <br /> %i , Monitoring performed on October 29, 2004 ,. <br /> 3• 1 <br /> Groundwater Monitoring Report 041029-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 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 /> i <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 /> i <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 /> 1680 ROGERS AVENUE SAW JOSE,CA 95114-1IDS (4081873.0856 FAX (406)675-7771 UC. 746684 www,blolrtetech.cAm <br /> f� <br /> I <br />