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BLAINE 1680 ROCKERS AVENUE <br /> BLSERVICES SAN JOSE,CALIFORNIA 95112-1105 <br /> TECH (408)573-7771 FAX <br /> r TH�o�p (408)573-0555 PHONE <br /> Y <br /> � 1 <br /> Y <br /> SND <br /> May 10, 2000 <br /> Biett Hunter <br /> Chevi on U S A Products Company <br /> P O Box 6004 <br /> San Ramon, CA 94583-0904 <br /> 1st Quai tei 2000 Monitor Ing at 9-4275 <br /> First Quartei 2000 Groundwater Monitoiiing at <br /> Chevron Seivice Station Numbet 9-4275 <br /> 2905 West Benjamin Holt Diive <br /> Stockton, CA <br /> Monitoring Performed on Match 1 and 9, 2000 <br /> 1 <br /> Groundwater Sampling Report 000301-Z-1 <br /> This report covets the routine monitor ung of groundwater wells at this Chevi oil facility Blaine <br /> Tech Services, Ines work at the site includes inspection, gauging, evacuation, puigewatei <br /> containinent, sample collection and sample handling in accordance with standaid piocedtues 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 tianspoited to the <br /> laboratory in conformance with EPA standaids Purgewater is, likewise, collected and <br /> tiarispoited to McKittrick Waste Tieatment Site for disposal <br /> Basic field inforinnation 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 foi the most recent samples is located in the Analytical Appendix The table <br /> also contains new groundwater elevation calculations taken fiom the computer plotted gradient <br /> reap which is located in the Pi ofessional Engineering Appendix <br /> • <br /> Blaine Tech Services,Inc Report No 000301-Z-1 1st-0 2000 Monitoring at Chevron 9-4275 <br />