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BLAINE <br /> 985 TIMOTHY DRIVE <br /> SAN JOSE,CA 95133 <br /> (408)995-5535 <br /> — jTECH SERVICES INC FAX (408)293-8773 <br /> November 29, 1995 <br /> Brett Hunter , [ <br /> Chevron U.S.A. Products Company <br /> P.O. Box 5004 , <br /> San Ramon, CA 94583-0$04 <br /> 4th Quarter 1995 Monitoring at 9-1:)18 <br /> Fourth Quarter 1995 Groundwater Monitoring at <br /> Chevron Service Station Number 9-1918 <br /> 45 East Harding Way <br /> Stockton, CA <br /> Monitoring Performed on October 31, 1995 <br /> Groundwater Sampling Report 951431-M-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, <br /> purgewater containment, sample collection and sample handling in accordance with standard <br /> procedures that conform to Regional Water Quality Control Board requirements <br /> Routine field data collection,tncludes 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,vvacuanon 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,'hkewise, collected and <br /> transported to Chevron's Richmond Refinery for disposal 0 <br /> Basis field�infbfffiation 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 Engineering Appendix <br /> t t i <br /> 4 ,[ <br /> Blaine Tech Services,Inc Report No 951031-M-2 '4th^d 1995xMonitoring at Chevron 9-1918 <br /> r <br />