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Quarterly Report - 152 East 11th Street, Tracy Page 5 <br /> TABLE 1 <br /> Groundwater Elevations (1) <br /> Well No Top of Casing Depth Water Table <br /> Elevation to Water Elevation <br /> ft ft. ft <br /> Nav-1 5071 740 4331 <br /> Nav-2 5106 740 4366 <br /> Nav-3 5048 719 4329 <br /> Nay-4 5069 753 43 16 <br /> (1) pleasured January 20th 1992 <br /> TABLE 2 <br /> Concentrations of Analytes in Groundwater Samples <br /> Total Petroleum <br /> Hydrocarbons Ethyl- Total <br /> Well No (as Gasoline) Benzene Toluene benzene Xylenes <br /> µ g1L Ag/L µ 1/L Ili pg/L <br /> Nav-1 ND (1) ND ND ND 17 <br /> Nav-2 ND ND ND ND ND <br /> Nav-3 1300 37 20 71 160 <br /> Nav-4 25000 60 1400 420 7300 <br /> (1)ND = Not Detected <br />