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TABLE 1 <br /> f A GROUNDWATER ELEVATION DATA AND ANALYTICAL SUMMARY <br /> F <br /> FORMER APACHE PLASTICS FACILITY <br /> 2050 EAST FREMONT STREET <br /> STOCKTON,CALIFORNIA <br /> Depth to Well Groundwater Ethyl- Total <br /> Date Water Elevation Elevation TPHG Benzene Toluene benzene Xylenes MTBE <br /> WELL# Sampled (ft.bgs) (ft.msl) (ft.msl) (mg/L) (µg/L) (µg/L) 41g/L) (tg/L) (M/L) <br /> MW-8 L 5118101 42.97 17.89 -25.08 26 3,200 2,200 870 1,890 <br /> <10* <br /> 1115101 48.13 -30.24 58 6,800 6,000 1,700 6,500 <25* <br /> 2/14/02 46.49 -28.60 2.2 800 23 99 7.9 <2.5 <br /> 5/20/02 46.60 -28.71 1.1 160 6.2 24 8.6 <1.0* <br /> MW-9 L 5/18101 43.28 18.27 -25.01 210 20,000 44,000 3,100 17,500 <200* <br /> 1115101 48.42 -30.15 210 22,000 47,000 3,200 18,900 <250* <br /> 2/14/02 46.78 -28.51 160 21,000 52,000 2,000 14,500 <250* <br /> 5120/02 46.88 -28.61 160 20,000 35,000 2,700 17,900 <250* <br /> MW-10 L 5/18101 43.40 18.40 -25.00 <0.050 0.90 <0.5 <0.5 <0.5 <0.50 <br /> 1115101 48.70 -30.30 0.15 . 11 35 2.3 14.9 <0.50 <br /> 2114/02 48.55 -30.15 <0.050 <0.50 1.2 <0.50 1.1 <0.50 <br /> 5120/02 50.31 -31.91 <0.050 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> MW-1 i L 5/18/01 42.67 17.69 -24.98 <0.050 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> 11/5/01 46.65 -28.96 <0.050 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> 2/14102 46.29 -28.60 <0.050 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> 5/20/02 46.81 -29.12 <0.050 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> MW-12 L 5/18101 50.38 17.67 -32.71 <0.050 <0.50 1.7 <0.5 1.81 <0.50 <br /> 1115101 4795 -30.28 NA NA NA NA NA NA <br /> 2/14102 46.78 -29.11 <0.050 <0.50 1.7 <0.50 <0.50 <0.50 <br /> 5/20/02 55.80 -38.13 <0.050 <0.50 0.58 <0.50 <0.50 <0.50 <br /> *=Reporting limits were increased due to high concentrations of target analytes <br /> **=Well MW-3 is obstructed at approximately 23 feet bgs <br /> ***=Well was previously identified as MW-1. All groundwater samples have been collected from well VEW-2 <br /> ****=Reporting limits increased due to sample foaming <br /> TPHG=Total petroleum hydrocarbons as gasoline <br /> MTBE=Methyl tertiary butyl ether <br /> U=Screened in upper water bearing zone <br /> L=Screened in lower water bearing zone <br /> NA=Not Analyzed <br /> NM=Well casing elevation has not been surveyed <br /> r� <br /> Apache_Quarterly_Data.xls Page 2 of 2 87RA7U5 <br />