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• <br />-10 <br />BLAINE <br />TECH SERVICES <br />N <br />August 20, 1999 <br />1680 ROGERS AVENUE <br />SAN JOSE, CALIFORNIA 95112-1105 <br />(408) 573-7771 FAX <br />(408) 573-0555 PHONE <br />Brett Hunter <br />Chevron U S A Products Company <br />P 4 Box 6004 <br />San Ramon, CA 94583-0904 <br />2nd Quarter 1999 Monitoring at 9-5775 <br />Second Quarter 1999 Groundwater Monitoring at <br />Chevron Service Station Number 9-5775 <br />301 W Kettleman Ln <br />Lodi, CA <br />Monitoring Performed on June 21, 1999 <br />Groundwater Sampling Report 990621-R-3 <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, purgewatei <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 standaids 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 />Blaine Tech Services, Inc Report No 990621-R-3 2nd -Q 1999 Monitoring at Chevron 9-5775 <br />