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moderately sorted f f ne to coarse sand that shows graded bedding (fine to coarse with <br /> depth) Beneath the B zone aquifer is stiff clay that extends from approximately 27 feet <br /> bgs to 40 feet bgs The original five monitor wells did not encounter groundwater in the <br /> A zone aquifer when initially drilled and sampled Depth to water measurements taken <br /> between 1993 and February 1996 indicate that the A zone aquifer was dry (depth to water <br /> greater than 17 feet bgs) MW 1 through MW5 are screened across both the A and B zone <br /> aquifers Sometime after February 1996 depth to groundwater measurements indicated <br /> that groundwater was in contact with the A zone aquifer, see Table 1 and Figures 8 and 9 <br /> The groundwater in the vicinity of the site is semiconfined Groundwater elevation at the <br /> site varies from a wet year high of 7 feet bgs (silty clay formation above the A zone) to <br /> about 22 - 23 feet bgs (B zone) during the previous drought period Groundwater flow <br /> direction in the A zone at the site has generally been to the west since December 1997 <br /> The B zone shows a similar flow direction, which would be expected due to the <br /> connection between zones at wells MW 1 through MW5 <br /> 4TH DLARTER 2002 SITE ACTIVITIES <br /> Groundwater samples were obtained from all wells associated with 1876 Country Club <br /> Blvd during this quarter (November 21, 2002) As requested by San Joaquin County <br /> Health, WEGE and Advanced GeoEnvironmental, Inc (AGE) coordinated to obtain <br /> depth to water and groundwater samples on the same date WEGE monitored and <br /> sampled wells associated with the Sanchez Property, 1876 Country Club Boulevard and <br /> AGE sampled and monitored wells associated with Country CIub Food and Fuel, 1856 <br /> Country Club Boulevard Figure 3 - Site Base Map has been expanded to show the <br /> relative positions of the Country Club Food and Fuel wells to the Sanchez Property wells <br /> Field notes from site monitoring and sampling can be found in Appendix A <br /> DEPTH TO WATER MEASUREMENTS <br /> Depth to water was measured at all wells on November 21, 2002 The measurements <br /> were made from the surveyed elevation at the top of casing at each well using an <br /> electrical air/water interface probe (Table 1) No free product or product sheen was <br /> observed in any of the monitor wells Table I also presents the Depth to Water <br /> measurements obtained from wells located at Country Club Food and Fuel Charts have <br /> been developed to show the elevation changes with time for Sanchez wells MW 1, MW2, <br /> MW3, MW4 and MW5, see Appendix B <br /> COLLECTION AND CERTIFIED ANALYSIS OF GROUNDWATER SAMPLES <br /> WEGE and Pittman Well Purging (PWP) personnel collected quarterly groundwater <br /> samples from the eleven monitor wells at the site on November 21, 2002 See Appendix <br /> 4 QM 4th 2002 <br />