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1680 ROGERS AVENUE <br /> TECH SU SAN JOSE,CA 95112-1105 <br /> TECH SERVICES. • <br /> (408)573-7771 FAX <br /> o (408)573 -0555 PHONE <br /> CONTRACTOR'S LICENSE#746684 <br /> www btainetech coin <br /> l�I:'GNU a <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 /> -- 4315 Waterloo Road <br /> Stockton, CA , <br /> Monitoring performed on April 28, 2004 <br /> Groundwater Monitoring Report 040428-RM-1 <br /> Tlus 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 any <br /> separate immiscible layer, water column volume, calculated purge volume(if applicable), elapsed <br /> evacuation time(if apphcable),total volume of water removed (if applicable), and standard water <br /> parameter instrument readings Sample material is collected, contained; stored, and transported to <br /> the laboratory in conformance with EPA standards Purgewater(if applicable)is, likewise, <br /> collected and transported to the Martinez Refining Company <br /> Basic field information is presented alongside analytical values excerpted from the laboratory report <br /> in the cumulative table of WELL CONCENTRATIONS The full analytical report for the most <br /> 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 hour • <br /> i <br /> Hazardous Materials and Emergency Response training course per 29 CFR 1910 120 Field <br /> persoivael are also enrolled in annual eight-hour refresher courses <br />