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BLAINE1680 ROGERS AVENUE <br /> TECH SERMCEs- SAN JOSE, CA 95112-1105 <br /> (408)573-7771 FAX <br /> add ► (408)573-0555 PHONE <br /> r� y� CONTRACTOR'S LICENSE#746684 <br /> www biainetech corn <br /> April 12, 2004 <br /> Karen Petryna <br /> Shell Oil Products US <br /> P O. Box 7869 <br /> Burbank, CA 91510-7869 <br /> First Quarter 2044 Groundwater Monitoring at <br /> Shell-branded Service Station <br /> 7700 Moreland Street <br /> Stockton, CA <br /> • MorutonnSperformed on March 3, 2004 <br /> Groundwater Moiutonng Report 040303-SH-4 <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 Iaboratory 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 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 />