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r� <br /> F <br /> 5 <br /> BLAINE 1680 ROGERS AVENUE <br /> TECH SERVICES µ SAN JOSE CALIFORNIA 85112 <br /> (408)573 7771 FAX <br /> (408)573 0555 PHONE <br /> 4��Qyi•1T TfifgO <br /> OF` yy <br /> f <br /> i <br /> 7 <br /> �j <br /> � h <br /> �4 <br /> September 14, 1998 <br /> Brett Hunter <br /> Chevron U S A Products Company <br /> P O Box 5004 <br /> San Ramon, CA 94583-0904 <br /> 3rd Quarter 1998 Monitoring at 9-2033 <br /> Third Quarter 1998 Groundwater Monitoring at <br /> Chevron Service Stauon Number 9-2033 <br /> 508 West Charter Way <br /> Stockton, CA <br />• Monitoring performed on August 11, 1998 <br /> Groundwater Sampling Report 980811-P-1 <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 <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 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 /> 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 980811-P-1 3rd 0 -1998 Monitoring at Chevron 9-2033 <br />