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n <br /> BLAINE 1680 ROGERS AVENUE <br /> TECH SERVICES. SAN JOSE,CALIFORNIA 95112-1105 <br /> (408)573-7771 FAX <br /> QEF rn�O p (408)573-0555 PHONE <br /> November 17, 1999 <br /> Brett Hunter <br /> Chevron U S A Products Company <br /> P O Box 6004 <br /> San Ramon, CA 94583-0904 <br /> 3rd Quarter 1999 Monitoi ing at 9-6258 <br /> Third Quarter 1999 Groundwater Monitoring at <br /> Chevron Service Station Number 9-6258 <br /> 2409 E Main @ F St <br /> Stockton, CA <br /> Monitoring Performed on August 30, 1999 <br /> Groundwater Sampling Report 990830-N-2 <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 /> contaitnrient, 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 sepaiate <br /> Immiscible layer, water column volume, calculated volume of a three-case volume purge, <br /> elapsed evacuation toric, total voluniC of watct ICnIoved, and standard watct paiainetct <br /> instrument readings Sample material is collected, contained, stored, and Li.anspoited to tlic; <br /> laboratory in conformance witli EPA standards Putgewater is likewise, collected and <br /> (I.insported to Mc.Kithick Waste Ticatnictit Site loi disposal <br /> Basic field information is presented alongside analytical values cxceip(ed from the laboratory <br /> Iepolt Irl the cumulative table of WL1,1- DA I A AND ANALY 1 ICAL IIESU1 1 S I liL, hill <br /> analytical repott for the most iccent samples is located in the Analytical Appendix I he table <br /> also contains new groundwatei elevation calculations taken horn the L01111)uter plotted gradient <br /> Elaine Tecn Services Inc Report No 990330-N-2 3rd Q 1999 Monitoring at Chevron 9-6258 <br />