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ELAINE 1680 ROGERS AVENUE <br /> TECH SERVICES.K SAN JOSE,CALIFORNIA 95112 <br /> (406)573 7771 FAX <br /> ,4r rN�n�a (40$)573 0555 PHONE <br /> 1 y� <br /> C <br /> ti <br />� April 2, 1997 <br /> Brett Hunter <br /> Chevron U S A Products Company <br /> P 4 Box 6004 <br /> San Ramon, CA 94583-0904 <br /> 1st Quarter 1997 Monitoring at 9-1452 <br /> First Quarter 1997 Groundwater Monitoring at <br /> Chevron Service Station Number 9-1452 <br /> 334 East Main St <br /> Ripon, CA <br /> Monitoring Performed on February 28, 1997 <br /> Groundwater Sampling Report 970228-F-2 <br /> This report covers the routine quarterly monitoring of groundwater wells at this Chevron facility <br /> Blaine 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, elapsed <br /> evacuation time, total volume of water removed, and standard water parameter instrument <br /> readings Sample material is collected, contained, stored, and transported to the laboratory in <br /> conformance with EPA standards Purgewater is, likewise, collected and transported to <br /> 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 /> Blaine Tech Servioes,Inc Report No 970228-F-2 1 st 0-1997 Monitonng at Chevron 9-1452 <br />