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' B1jNE 1680 ROGERS AVENUE <br /> SAN JOSE,CALIFORNIA 95112 <br /> TECH SERVICES (408)573-7771 FAX <br /> rrr�o A (408)573-0555 PHONE <br /> Vi C7� <br /> 2 <br /> N <br /> tt A <br /> i k <br /> January 13, 1998 <br /> Brett Hunter <br /> Chevron U.S.A. Products Company <br /> P.O. Box 6004 <br /> San Ramon, CA 94583-0904 <br /> 4th Quarter 1.997 Monitoring at 9-8632 <br /> } <br /> jFourth Quarter 1997 Groundwater Monitoring at <br /> Former Chevron Service Station Number 9-8632 <br /> 575 Grant Line Road <br /> Tracy, CA <br /> Monitoring Performed on September 2 and <br /> ' November 19, 1997 <br /> Groundwater Sampling Report 971119-M-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 i <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 j <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 /> Blaine Tech Services,Inc. Report No. 971119-M-2 4th-0 1997 Monitoring at Former Chevron 9-8632 <br />