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BLAINE 1680 ROGERS AVENUE <br /> TECH SE RVICFS— SAN JOSE,CA 95112-1105 <br /> . (408)573-7771 FAX <br /> � T ' rte (408)573-0555 RHONE <br /> CONTRACTOR'S UCENSE#746684 <br /> www blainetech com <br /> tt V w <br /> July 13, 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 /> 1160 West Yosemite Avenue <br /> Manteca, CA <br /> Monitoring performed on June 8 and 22,2004 <br /> Groundwater Monitoring Report 044622-MS-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,calculated purge volume (if applicable), <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 information is presented alongside analytical values excerpted from the laboratory <br /> report in the cumulative table of WELL CONCENTRATIONS The fall analytical report for <br /> the most recent samples and the field data sheets are attached to this report <br /> . At a nummiun,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 />