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5 f <br /> BLAINE <br /> 985 TIMOTHY DRIVE <br /> SAN JOSE, CA 95133 <br /> �ECH SERVICES INC (408)995-5535 <br /> FAX (408)293-87738773 <br /> December 2, 1996 <br /> Brett Hunter IstinvTo <br /> Chevron U S A Products Company MAR - 7 1991 <br /> P 0. Box 5004 <br /> San Ramon, CA 94583-0804 ENVIRONMENTAL HEALTH <br /> PERMIT/SERVICES <br /> 4th Quarter 1996 monitoring at 9-1848 <br /> Fourth Quarter 1996 Groundwater Monitoring at <br /> Chevron Service Station number 9-1848 <br /> 1257 Yosemite Avenue <br /> Manteca, California <br /> Monitoring performed on November 6, 1996 <br /> • <br /> Groundwater Sampling Report 961106-C-1 <br /> This report covers the routine quarterly monitoring of groundwater wells at this Chevron facility <br /> Blaine Tech Services, Inc 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 McKittnck Waster 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 /> r map which is located in the Professional Engineering Appendix <br /> Blaine Tech Services,Inc deport No 961106-C-1 4th-0 1996 Monitoring at Chevron 9-1848 <br />