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mom <br /> BLAINE 1680 ROGERS AVENUE <br /> TECH sEWCES_ SAN JOSE,CA 95112-1105 <br /> (408)573-7771 FAX <br /> �4'n'W-R (448)573-0555 PHONE <br /> CONTRACTOR'S LICENSE#748684 <br /> www blarnetech com <br /> June 2,2003 <br /> Karen Petryna <br /> Shell Oil Products US <br /> P 0. Box 7869 <br /> Burbank, CA 91510-7859 <br /> I <br /> Second Quarter 2003 Groundwater Monitoring at <br /> Shell-branded Service Station <br /> 7910 Lower Sacramento Road <br /> Stockton, CA <br /> • Monitoring performed on April 24,2003 <br /> Groundwater Monitoring Report 030424-EB-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 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, stared, <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 full analytical report for <br /> the most recent samples and the field data sheets are attached to this report <br /> At a nu mum,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 />