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" BLAINS 1680 ROGERS AVENUE <br /> TECH SERVICES SANJOSE,CALIFORNIA 95112-1105 <br /> (408)573-7771 FAX <br /> �a rN�o (408)573-0555 PHONE <br /> r <br /> AHD �-V <br /> Mai ch 20, 2000 <br /> Brett Huntei <br /> Chevron USA Pioducts Company <br /> P O Box 6004 <br /> San Ramon, CA 94583-0904 <br /> 1st Quarter 2000 Monitoring at 9-6258 <br /> First Quarter 2000 Gioundwater Monitoring at <br /> Chevion Service Station Numbei 9-6258 <br /> 2409 E Main @ F St <br /> Stockton, CA <br /> Monitoring Performed on January 20, 2000 <br /> Groundwatei Sampling Repoit 000120-Y-2 <br /> This report covets the routine monitoiing of gioundwatei wells at this Chevion facility Blaine <br /> Tech Services, lne 's work at the site includes inspection, gauging, evacuation,purgewater <br /> containment, sample collection and sample handling in accordance with standard ptoceduies that <br /> confoim to Regional Watei Quality Contiol Boaid ieclunernents <br /> Routine field data collection includes depth to water, total well depth, thickness of any separate <br /> immiscible layer, water column volume, calculated volume of a three-case volume purge, <br /> elapsed evacuation time, total volume of water removed, and standard water parameter <br /> instrument readings Sample mateiial is collected, contained, stored, and transported to the <br /> laboratory in conformance with EPA standards Purgewater is, likewise, collected and <br /> tiansported to McKithick Waste Tieatment Site for disposal <br /> Basic field information is presented alongside analytical values excerpted from the laboiatoiy <br /> report in the cumulative table of WELL DATA AND ANALYTICAL RESULTS rhe full <br /> analytical report for the mast recent samples is located in the Analytual Appendix The table <br /> also contains new groundwater elevation calculations taken flora the computer plotted gradient <br /> map which is located in the Professional Engineering Appendix <br /> I <br /> • Blaine Tech Services, Inc ReportNo 000120-Y-2 1st-Q 2000 Monitoring at Chevron 9-6258 <br /> I <br /> I <br /> i <br /> I <br />