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1680 ROGERS AVENUE <br /> TECH SERVICES rMAYBLAINS SAN JOSE,CA 95112-1105(408)573-7771 FAX <br /> T (408) 573-0555 RHONE <br /> CONTRACTOR'S LICENSE#746684 <br /> www blametech com <br /> 0 <br /> May 8, 2000 <br /> Karen Petryna <br /> Equiva Services LLC <br /> P O Box 7869 <br /> Burbank, CA 91510-7869 <br /> First Quarter 2000 Groundwater Monitoring at <br /> Shell-branded Service Station <br /> 141 North El Dorado <br /> Stockton, CA <br /> • Monitoring performed on March 29, 2000 <br /> Groundwater Monitoring Report 000329-.I-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 CONCEN'T'RATIONS The full analytical report for <br /> the most recent samples and the field data sheets are attached to this repoet <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 />