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rs S �Ai <br /> uf— <br /> '77�. <br /> 'l.•` �Tr <br /> Y <br /> �V <br /> Beacon No. 686 - Lodi <br /> Work Plan <br /> r.a Page No. 4 <br /> s <br /> r �„3 <br /> F ” Mid-20, the only groundwater monitoring well with water as of September <br /> 19896 was drilled to 70 feet below grade with the screened interval frc�l <br /> i ; . 59 to 69 feet below grade. The three proposed ground-water monitoring <br /> i wells will be constructed similar to M-20, taking into account any <br /> I ..� variation in the depth of Zone 5 in the boring. <br /> I <br /> i GROUND-WATER DATA <br /> - i <br /> I <br /> Sampling and analysis of ground-water monitoring wells at the site has <br /> been performed at the site since 1985 Since that time, several wells <br /> have gone dry and were. removed from the monitoring Trogram Table 1; <br /> originally presented in DuPont Environmental Remediation Services' June <br /> !f 1990 Quarterly Monitoring Report, presents the cm <br /> results for ground-water samples collected from the monitoring wells at <br /> the site <br /> z <br /> i <br /> DISCUSSION ;. <br /> Assessment of hydrocarbon constituents in the deep ground-water zone <br /> i beneath this site is warranted based on the analytical results of shallow <br /> dlground-water-samples and'the fact that most wells at the site are dry. <br /> s` <br /> I � <br /> F <br /> i <br /> ` 4� r •t , <br />