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BLAINE 1680 ROGERS AVENUE <br /> TECH SERVICES. SAN JOSE,CALIFORNIA 95112 <br /> (408)573-7771 FAX <br /> (408)573-0555 PHONE <br /> Y <br /> D ppCV <br /> October 6, 1997 OCT 16 1997 <br /> Brett Hunter EN1n��HEAI1H <br /> PERMITISE94M <br /> Chevron U.S A. Products Company <br /> P.O. Box 6004 <br /> San Ramon, CA 94583-0904 <br /> 3rd Quarter 1997 monitoring at 9-1848 <br /> Third Quarter 1997 Groundwater Monitoring at <br /> Chevron Service Station number 9-1848 <br /> 1257 Yosemite Avenue <br /> Manteca, California <br /> Monitoring performed on August 26, 1997 <br /> Groundwater Sampling Report 970826-T-2 <br /> This report covers the routine monitonng of groundwater wells at this Chevron facility. Blaine <br /> 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 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 /> �i <br /> Balm Tech Services,Inc Report No 970826-T-2 3rd-Q 1997 Monitoring at Chevron 9-4848 <br />