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BLAINE 1680 ROGM AVENUE <br /> • TECH SE"cES.t SAN JOSE:,CA 96112-1105 <br /> (408)573-7771 FAX <br /> (408)573-0555 PHONE <br /> CONTRACTOR'S LICENSE#746684 <br /> www.bLmnetach.com <br /> May 26,2004 <br /> Karen Petryna <br /> Shell Oil Products US <br /> P.O. Box 7869 <br /> Burbank, CA 91510-7869 <br /> Second Quarter 2004 Groundwater Monitoring at <br /> Shell-branded Service Station <br /> 2375 West Grant Line Road <br /> Tracy, CA <br /> Monitoring performed on April 26,2004 <br /> Groundwater Monitoring Report 040426-SH-2 <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 Quahty 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 applicable), <br /> elapsed evacuation time(if apphcable),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, hkevnse, collected and transported to the Martinez Refining Company <br /> Basic field information is presented alongside analytical values excerpted from the laboratory <br /> report in the cumulative table of WELL CONCENTRAnONS. The full analytical report for <br /> the most recent samples and the field data sheets are attached to this 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 />