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Ir � � � � � � ENV <br /> TABLE l (continued) <br /> Casing Depth Groundwater LPH Concentration(µg/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> No Date (ft ms1) (ft) (ft msl) (ft) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> UVB-MW2 02/28/97 7 75 17 96 -- 000 200 1,100 190 1,700 9,400 <2 5 <br /> 05/08/97 19 94 -12 19 000 092 <0 5 <0 5 17 58 3 0 <br /> 08/26/97 d 2087 -13 12 000 12,000 23,000 2,700 13,000 120,000 1,300 <br /> 10/02/97 -- -- -- <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> 11/11/97 2143 -1368 000 <0 5 099 066 4 1 <50 <2 5 <br /> 03/03/98 1595 -820 000 2,200 190 <20 1,300 12,000 <100 <br /> 03/03/98 <20* <br /> 05/20/98 15 82 -807 000 2,500 180 950 1,300 16,000 560 <br /> 05/20/98 <14* <br /> 08/19/98 1703 -928 000 14 4 8 2 7 24 250 16 <br /> 08/19/98 <2 0* <br /> 11/18/98 1753 -978 000 230 8 0 25 23 760 <25 <br /> 03/30/99 1663 -8 88 000 805 76.1 366 240 6,290 <20 <br />' Trip 03/30/99 <br /> <0 5 <0.5 <0.5 <0 5 <50 <2.0 <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-MW 1 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 /> i <br /> ft msl Feet relative to mean sea level <br /> LPH Liquid-please hydrocarbons <br /> MTBE Methyl t-butyl ether <br /> TPH-g Total Petroleum Hydrocarbons as gasoline <br /> �gfL Micrograms per titer <br /> -- Not measured, not sampled, or not analyzed <br /> 73942 Q399 Tl XLS Page 30 <br />