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TABLE 1 continued <br /> Casing Depth Groundwater LPH Concentration(pg/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> No Date (ft msl) (ft) (ft msl) (ft) Benzene Toluene benzene Xylenes TPH-g <br /> V4 04/30/92 938 3148 -2209 001 Not sampled-LPH <br /> 08/13/92 3360 -24 17 0 07 Not sampled-LPH <br /> 10/08/92 3420 -2473 012 Not sampled-LPH <br /> 02/23/93 3085 -2147 000 15,000 35,000 4,300 23,000 150,000 <br /> 05/18/93 2935 -1997 000 13,000 47,000 5,900 28,000 240,000 <br /> 08/22/93 2960 -2022 000 9,400 42,000 3,900 21,000 150,000 <br /> 12/30/93 2926 -1988 000 10,000 36,000 4,800 26,000 150,000 <br /> 02117/94 28.89 -19.51 000 Ns Ns Ns Ns Ns <br /> Trip 02117/94 <0.5 <0.5 <0.5 <0.5 <50 <br /> Blank <br /> Rinse 02117/94 <0.5 0 6 <0.5 <0.5 <50 <br /> Blank <br /> a Water in well may be residual water in end cap <br /> NA Laboratory method was not performed <br /> NS Well was not sampled <br /> -- Measurement was not taken <br /> Note Groundwater elevations adjusted for LPH,when present <br /> Data from 1/87 from HLA <br /> Water sample taken from SW2 on 17 February 1994 was labeled as AS2 on chain of custody and laboratory results <br /> XCL73942Q294 I Page 12 <br />