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TABLE I (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 08/08/96 938 2360 -1422 Sheen <br /> 11/04/96 2402 -1464 000 3,200 24,000 2,900 16,000 120,000 <1,250 <br /> 02/03/97 1940 -1002 Sheen -- -- -- -- -- -- <br /> UVB- 02/28/97 7,200 18,000 2,000 11,000 99,000 1,100 <br /> i <br /> MW I <br /> I <br /> UVB- 02/28/97 200 1,100 190 1,700 9,400 <2 S <br /> MW2 <br /> a Water in well may be residual water in end cap <br /> b Unidentified hydrocarbons present <br /> ft ms] 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 <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 /> I <br /> XLS73942Q297 TI I P-ile 25 <br />