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f <br /> BLAINE 1680 ROGERS AVENUE <br /> TECH SERVICES SAN.FOSE,CALIFORNIA 95112 <br /> (408)573-7771 FAX <br /> (408)573-0555 PHONE <br /> 7,p <br /> z <br /> September 22, 1997 <br /> Brett Hunter <br /> Chevron U.S.A.Products Company <br /> P.O. Box 6004 <br /> San Ramon, CA 94583-0904 <br /> 3rd Quarter 1997 Monitoring at 9-2033 <br /> Third Quarter 1997 Groundwater Monitoring at <br /> Chevron Service Station Number 9-2033 <br /> 508 West Charter Way <br /> Stockton, CA <br /> r 3 <br /> Monitoring Performed on August 21, 1997 <br /> Groundwater Sampling Report 970821-F-3 <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,pwgewater <br /> containment, sample collection and sample hatrdliirg in accordance with standard procedures that <br /> conform to Regional Water Quality Control Boated 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 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 /> ORanalytical report for the most recent samples is located in the Analytical Appendix. The table <br /> Blaine Tech Services,Inc. Report No 970821-F 3 3rd o-1997 Monitoring at Chevron 9-2033 <br />