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RECEIVED <br /> Ansd.._'),....... <br /> 1 <br /> EMC®R May 13, 1992 <br /> ASsoC1A7Es Project G67-0501 <br /> Consultants in Waste <br /> Management and <br />' Enviromental Control <br /> Ms Jackie Doub <br /> Aegis Environmental, Inc <br /> 1050 Melody Lane, Suite 160 <br /> Roseville, California 95678 <br />' Re Second Quarter 1992 Ground-water Monitoring Report, <br /> Shell - 420 West Kettleman Lane, Lodi, WIC# 2044416-0202 <br /> ' Dear Ms Doub <br /> This letter report presents the results of the second quarter 1992 ground-water <br /> monitoring event for the Shell Oil Company (Shell) service station at 420 West <br /> Kettleman Lane, Lodi Monitoring at this site is being conducted on a quarterly <br /> basis <br /> GROUND-WATER LEVEL SURVEY <br /> On April 20, 1992, static water levels were measured in all site wells before <br /> purging and sampling Water levels were measured to 0.01 foot from the top of <br /> the well casing using an oil/water interface probe Water-level measurements, <br /> ground-water elevations and monitoring well field measurement data are <br /> presented in Table 1 <br /> SAMPLING AND ANALYSIS <br /> Ground-water samples were collected on April 20, 1992 from monitoring wells <br /> MW-1 and Ill Monitoring well MvV-2 is scheduled to be monitored annually <br /> during the fourth quarter of 1992. A site map, including the monitoring well <br /> locations, is attached, as provided by Aegis Environmental Ground-water <br /> monitoring wells were purged before sampling using a polyvinyl chloride bailer, <br /> ' a low-flow submersible pump, or a Teflon® bailer Samples were collected <br /> using a Teflon bailer The procedures used to purge and sample ground-water <br /> monitoring wells were detailed in our November 14, 1991 Proposal to Conduct <br /> Ground-water Monitoring for Shell Oil Company, and were included in the first <br /> quarter 1992 monitoring report <br /> ' Samples were cooled with ice packs and delivered, under chain-of-custody <br /> control, to NET Pacific analytical laboratory for analysis <br /> 1433 N Market Boulevard Sacramento California 95834 (916) 928-3300 <br />