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TABLE 1 <br /> GROUNDWATER ELEV�MON DATA AND -kNALYTICAL SUMMARY <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 TPHO Benzene Toluene benzene Xylenes MTBE <br /> WELL Sampled (ft bgs) (ft msl) (ft tnsl) (mg/L) (pg/L) (µ,"1L) (µg/L,) (µg/L) (µg/L) <br /> MW-8 L 5118/01 4297 1789 -2508 26 3,200 2,200 870 1,890 <10* <br /> 1115101 4813 -3024 58 6,800 6,000 I,700 6,500 <25* <br /> 2/14/02 4649 -2860 22 800 23 99 79 <2 5* <br /> 5/20102 46 60 -2871 1 1 160 62 24 86 <1 0* <br /> MW-9 L 5/18101 43 28 1927 -2501 210 20,000 44,000 3,100 17,500 <200* <br /> 1115101 4842 -30 15 210 22,000 47,000 3,200 18,900 <2504 <br /> 2/14/02 4678 -28 51 160 21,000 52,000 2,000 14,500 <250* <br /> 5/20/02 46 88 -28 61 160 20,000 35,000 2,700 17,900 <250* <br /> MW-10 L 5118101 43 40 1840 -2500 <0 050 090 <0 5 <0 5 <0 5 <0 50 <br /> 11/5/01 48 70 -3030 0 15 11 35 23 149 <0 50 <br /> 2/14102 4855 -30 15 <0 050 <0 50 1 2 <0 50 1 1 <0 50 <br /> 5/20/02 5031 -3191 <0 050 <0 50 <0 50 <0 50 <0 50 <0 50 • <br /> MW-1 1 L 5/18/01 4267 1769 -2498 <0 050 <0 50 <0 50 <0 50 <0 50 <0 50 <br /> 11/5/01 4665 -2896 <0 050 <0 50 <0 50 <0 50 <0 50 <0 50 <br /> 2/14102 4629 -2860 <0 050 <0 50 <0 50 <050 <0 50 <0 50 <br /> 5/20/02 46 81 -2912 <0 050 <0 50 <0 50 <0 50 <0 50 <0 50 <br /> MW-12 L 5118101 5038 1767 -3271 <0 050 <0 50 17 <0 5 181 <0 50 <br /> 11/5/01 4795 -3028 NA NA NA NA NA NA <br /> 2114102 46 78 -29 I1 <0 050 <0 50 1 7 <0 50 <0 50 <0 50 <br /> 5/20/02 55 80 -38 13 <0 050 <0 50 059 <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 ternary butyl ether <br /> U=Screened in upper water bearing zone <br /> L=Screened in lower water beanng zone <br /> NA=Not Analyzed <br /> NM=Well cast-no,elevation has not been surveyed <br /> is <br /> Apache Quarterly_Data xls PaszP 2 of 2 5TRATU3 <br />