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BLAINE 1680 ROGERS AVENUE <br /> TECH SERVICES.K SAN JOSE,CALIFORNIA 95112-1105 <br /> (408)573-7771 FAX <br /> (408)573-0555 PHONE <br /> �A <br /> c�� war <br /> 1ND <br /> August 2, 1999 <br /> Brett Hunter <br /> Chevron U S A Products Company <br /> P O Box 6004 <br /> San Ramon, CA 94583-0904 <br /> 2nd Quarter 1999 Monitoring at 9-9840 <br /> Second Quarter 1999 Groundwatei Monitoring at <br /> Chevion Service Station Number 9-9840 <br /> 4344 Waterloo Rd <br /> Stockton, CA <br /> Monitoring Peiforined on June 11, 1999 J <br /> Groundwatei Sampling Report 99061I-Z-2 <br /> This report covers the routine monitoring of gioundwatei wells at this Chevion facility Blaine <br /> Tech Services, Inc 's work at the site includes inspection, gauging, evacuation, purgewatei <br /> containment, sample collection and sample handling in accordance with standard proceduies that <br /> conform to Regional Water Quality Contiol Board ieclunements <br /> Routine field data collection includes depth to water, total well depth, thickness of any separate <br /> immiscible layer, watei column volume, calculated volume of a three-case volume purge, <br /> elapsed evacuation time, total volume of water removed, and standaid water parameter <br /> instrument readings Sample material is collected, contained, stoied, and tianspoited to the <br /> laboiatory 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 iepor[ for the most recent samples is located in the Analytical Appendix The table <br /> also contains new gioundwatei elevation calculations taken from the computes plotted gradient <br />. rnap which is located in the Professional Engineer nig Appendix <br /> Blaine Tech Services Inc Report No 990611-Z-2 2nd 0- 1999 morntorong at Chevron 9-9840 <br />