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TABLE 1 (continued) <br /> Casing Depth Groundwater LPH Concentration(}tg/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> No Date (ft ms]) (ft) (ft msl) (ft) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> UVB-MW2 03/30/99 7 75 1663 -8 88 000 805 761 366 240 6,290 <20 <br /> 05/05/99 16 12 -8 37 000 693 366 457 225 5,510 35 8 <br /> 08/20/99 1753 -978 000 730 759 120 252 2,430 104 <br /> Trip 08/20/99 <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 /> b Unidentified hydrocarbons present <br /> c Hydrocarbons ranging from C6-C12 identified on the gasoline sample chromatogram <br /> d Analytical results may be incorrect due to possible mislabeling of samples for UVB-MW1 and UVB-MW2 <br /> Resampled on 2 October 1997 <br /> e Gas and unidentified hydrocarbons ranging from C6-C8 identified on the gasoline sample chromatogram <br /> f Analyzed outside of hold time <br /> * Confirmatory value, calculated by EPA Method 8260 <br /> ft msl Feet relative to mean sea level <br /> LPH Liquid-phase hydrocarbons <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, using an average specific giavity of 0 75 for gasoline <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 /> 4 <br /> 73942 Q899 Ti XLS Page 32 <br />