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• <br />• <br />BLAINS <br />TECH SERVICES <br />=�Q�a�rrr rNy� <br />Y <br />�Np�e <br />1880 ROGERS AVENUE <br />SAN JOSE, CALIFORNIA 95112-1105 <br />(408) 573-7771 FAX <br />(408) 573-0555 PHONE <br />February 4, 2000 <br />Brett Hunter <br />Chevron U S.A Products Company <br />P O Box 6004 <br />San Ramon, CA 94553-0904 <br />4th Quarter 1999 Monitoring at 9-5775 <br />Fourth Quarter 1999 Groundwater Monitoring at <br />Chevron Service Station Number 9-5775 <br />301 W Kettleman Ln <br />Lodi, CA <br />Monitoring Performed on December 3, 1999 <br />Groundwater Sampling Report 991203-R-2 <br />This report covers the routine monitoring of groundwater wells at this Chevron facility Blaine <br />Tech Services, Inc 's work at the site includes inspection, gauging, evacuation, purgewater <br />containment, sample collection and sample handling in accordance with standard procedures that <br />conform to Regional Water Quality Control Board requirements <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 material is collected, contained, stored, and transported to the <br />laboratory in conformance with EPA standards Purgewater is, likewise, collected and <br />transported to McKittrick Waste Treatment Site for disposal <br />Basic field information is presented alongside analytical values excerpted from the laboratory <br />report in the cumulative table of WELL DATA AND ANALYTICAL RESULTS. The full <br />analytical report for the most recent samples is located in the Analytical Appendix The table <br />also contains new groundwater elevation calculations taken from the computer plotted gradient <br />map which is located in the Professional Eubineering Appendix <br />Blaine Tech Services, Inc Report No 991203-R-2 <br />41h-0 1999 Monitonng at Chevron 9-5775 <br />