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TABLE 1 <br /> MONITORING WELL CONSTRUCTION DETAILS <br /> Former UST Area,Tracy High School <br /> Tracy, California <br /> Monitoring Date Casing Casing Slot Surveyed Reference Screen Filter Pack Aquifer Zone <br /> Installed elevation Interval <br /> Well ID No. Diameter material size TOC elevation ft b s Interval (ft bgs) <br /> MacArthur <br /> MW-1 7/19/2007 2 in. Schedule 020 55.41 USGS 8.50-18.50 6.50-18.50 Upper water <br /> 40 PVC 50.79* bearing zone <br /> Datum <br /> MacArthur <br /> MW-2 7/19/2007 2 in. Schedule 020 55.73 USGS 8.50-18.50 6.50-18.50 Upper water <br /> 40 PVC 52.08* bearing zone <br /> Datum <br /> MacArthur <br /> MW-3 7/19/2007 2 in. Schedule 020 55.45 USGS 9.00-19.00 7.00-19.00 Upper water <br /> 40 PVC 51.73* bearing zone <br /> Datum <br /> MacArthur <br /> MW-4 7/19/2007 2 in. Schedule 020 55.01 USGS 8.50-18.50 6.50-18.50 Upper water <br /> 40 PVC 51.50* bearing zone <br /> Datum <br /> MacArthur <br /> MW-5 4/11/2008 2 in. Schedule 0.010 49.22 USGS 8.00-18.00 6.00-18.00 Upper water <br /> 40 PVC 50.38' bearing zone <br /> Datum <br /> MacArthur <br /> MW-6 4/11/2008 2 in. Schedule 0.010 50.60 USGS 8.00-18.00 6.00-18.00 Upper water <br /> 40 PVC bearing zone <br /> Datum <br /> MacArthur <br /> MW-7 4/11/2008 2 in. Schedule 0.010 50.98 USGS 8.00-18.00 6.00-18.00 Upper water <br /> 40 PVC bearing zone <br /> Datum <br /> * Well heads reconfigured; TOC elevation resurveyed August 15, 2008 <br /> 048613-10(4) <br />