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'BLAINE 1680 ROGERS AVENUE <br /> TECH SDMCES. SAN JOSE, CA 95112-1105 <br /> (408)573-7771-FAX <br /> (408)5734)555 PHONE <br /> . crP CONTRACTOR'S LICENSE#k746684 <br /> www.btainatech.com <br /> November 4,2002 <br /> Daren Petryna <br /> Shell Oil Products US <br /> P.O. Box 7869 <br /> Burbank, CA 91510-7569 <br /> Fourth Quarter 2002 Groundwater Monitoring at <br /> Shell-branded Service Station <br /> 341 East Main Street <br /> Ripon, CA <br /> Monitoring performed on September 6 and October 9,2002 <br /> Groundwater Monitoring Report 021009-JB-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 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 />