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BINE 1880 ROGERS AVENUE <br /> TECH SERVICES SAN JOSE,CALIFORNIA 95112 <br /> (408)573-7771 FAX <br /> • aNT TNo (408)573-0555 RHONE <br /> A <br /> r <br /> C�Np �y7� I <br /> January 5, 1995 <br /> Brett Hunter <br /> Chevron U.S A Products Company <br /> P O Box 6004 <br /> San Ramon, CA 94583-0904 <br /> 4th Quarter 1997 Monitoring at 9-4275 <br /> Fourth Quarter 1997 Groundwater Monitoring at <br /> Chevron Service Station Number 9-4275 <br /> 2905 West Benjamin Holt Drive 5� <br /> Stockton, CA <br /> Monitoring Performed on November 25, 1997 <br /> Groundwater Sampling Report 971125-S-1 <br /> This report covers the routine monitoring of groundwater wells at this Chevron facility Blame <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 McKtttnck Waste Treatment Site for disposal. <br /> Banc field information is presented alongside analytical values excerpted from the laboratory <br /> report to the cumulative table of WELL DATA AND ANALYTICAL RESULTS The full <br /> analytical report for the most recent samples is located to 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 /> Blaine Tech Services,Inc Report No 971125-S-1 4th-0 1997 Monitoring at Chevron 9-4275 <br />