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TABLE I (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 MTBE <br /> Trip 05/20/98 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> Blank <br /> Rinse 05/20/98 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> Blank <2 0* <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-MW 1 and UVB-MW2 <br /> Resampled on 2 October 1997 <br /> C 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 gravity of 0 75 for gasoline <br /> Data from 1187 from HLA <br /> Water sample taken from SW2 on 17 February 1994 was labeled as AS2 on chain of custody and laboratory results <br /> XLS73942 Q598 TI I <br /> Paye 29 <br />