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i • � <br /> Table 1 Summary of Groundwater Monitoring Data: Water Elevations and Analyses <br /> ARCO Facility 5450, Stockton, California <br /> Top-of-casing Depth -to- Product Water-level Change since Concentrations in L <br /> Well number elevation, water, thickness, elevation, last measurement, Total <br /> and date in feet(a) in Feet in feet in feet(b) in feet Benzene Toluene Eth (benzene Xy lenes TPI-(-G MTBE <br /> AT-1 <br /> 7130196 -- -- -- -- 0 54 <0 5 <0 5 <0 5 <50 35 <br /> 11/15/96 1237 -- -- <0 5 <0 5 <0 5 <0 5 <50 8 <br /> Notes <br /> TPI I-G =Total Petroleum Hydrocarbons as Gasoline <br /> MTBE =Methyl Tertiary Butyl Ether <br /> Dash indicates not measured or not calculated <br /> 43361 rABLM5450NOV6 XLS <br />