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TABLE 1 (continued) <br /> Casing Depth Groundwater LPH Concentration (Ng/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> No Date (ft msl) (ft) (ft msl) (ft) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> V4 08/24/95 938 -- -- -- -- -- -- -- <br /> 10/19/95 2685 -1747 Sheen -- -- -- -- -- -- <br /> 02/13/96 2474 -1536 Sheen -- -- -- -- --04/18/96 2236 -1298 Sheen -- -- -- -- -- <br /> 08/08/96 2360 -1422 Sheen -- -- -- -- -- -- <br /> Trip 08/08/96 <0.5 <0.5 <0.5 <0.5 <50 <2 5 <br /> Blank <br /> Rinse 08/08/96 <0 5 <0.5 <0.5 <0.5 <50 <2.5 <br /> Blank <br /> a Water in well may be residual water in end cap <br /> ft msl Feet relative to mean sea level <br /> LPH Liquid-phase hydrocarbon <br /> MTBE Methyl t-butyl ether <br /> TPH-g Total Petroleum Hydrocarbons as gasoline <br /> pg/L Micrograms per liter <br /> -- Not measured,not sampled,or not analyzed <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 /> XLS73942Q896 TI I Page 23 <br />