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BLAINS 1680 ROGERS AVENUE <br /> . TECH SERIACES— SAN JOSE,CA 95112-1106 <br /> (408)573-7771 FAX <br /> ' (408)573-0555 PHONE <br /> CONTRACTOR'S LICENSE#746684 <br /> ;w"OF <br /> www.blainetach.com <br /> 'SND iki&w <br /> October 24, 2003 <br /> Karen Petryna <br /> Shell Oil Products US <br /> P.O. Box 7869 <br /> Burbank, CA 91510-7869 <br /> Fourth Quarter 2003 Groundwater Monitoring at <br /> Shell-branded Service Station <br /> 2575 Country Club <br /> . Stockton, CA <br /> Monitoring performed on September 16 and <br /> October 8, 2003 <br /> Groundwater Monitoring Report 030916-MS-1 <br /> Tlns 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, calculated purge volume (if apphcable), <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 mformahon 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 tins report. <br /> At a muumum,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 />