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i <br /> ELAINE 1680 ROGERS AVENUE <br /> TECH SERVICES SAN JOSE,CALIFORNIA 95112-1105 <br /> {408}573-7771 FAX <br /> (408)573-0555 PHONE <br /> r <br /> March 30, 1999 - <br /> 1 Y <br /> Karen Petryna <br /> Equiva Services LLC <br /> P O Box 6249 -- <br /> Carson, CA 90749-6249 <br /> First Quarter 1999 Gioundwater Monitoring at <br /> Shell-branded Service Station <br /> 2494 Fremont Street <br /> Stockton, CA <br /> Monitoring performed on February 23, 1999 <br /> • <br /> Groundwater Monitoring Report 990223-Y-4 <br /> This report covers the routine monitoring of groundwater wells at this Shell-branded facility In <br /> accoidance with standaid proceduies that conform to Regional Watei Quality Contiol Board <br /> requirements, routine field data collection includes depth to water, total well depth, thickness of <br /> any separate Immiscible layer, water column volume, appitot late calculated purge volume (if <br /> applicable), elapsed evacuation time (if applicable), total volume of water removed (if <br /> applicable), and standaid water parameter instrument readings Sample material is collected, <br /> contained, stoied, and transported to the laboratoiy in conformance with EPA standaids <br /> Purgewater (if applicable) is, likewise, collected and transpotted to the Martinez Refining <br /> 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 repoi t for <br /> the most recent samples and the field data sheets aie attached to this report <br /> At a nunimum, Blaine Tech Services, Inc field personnel are certified on completion of a forty <br /> hour Hazardous Materials and Emeigency Response training course per 29 CFR 1910 120 Field <br /> personnel are also enrolled to annual eight Hour refresher courses <br />