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Table 1 <br /> Groundwater Monitoring Data <br /> ARCO Service Station No. 6080 <br /> USEPA Method 801518020 (DHS LOFT) <br /> 85 Louise Avenue, Lathrop, California <br /> Elevation Static Water Groundwater Groundwater Ethyl- Total <br /> Well Top of Casing Level Elevation Flow TPHG Benzene Toluene benzene Xylenes MTBE <br /> Number Date (Feet msl) (feet bgs) (feet msl) Direction µg/l µg/I µg/1 µg11 µg11 ltgll <br /> MW-1 P 06/23/00 1448 847 601 NE <50 <0 5 <0 5 <0 5 <0 5 45 4 <br /> MW-1 NP 09/08/00 1449 953 495 Flat 613 Z <0 5 <0 5 <0 5 1 29 214 <br /> MW-i NP 12/11/00 1448 997 451 NE 387 j <0 5 <0 5 <0 5 189 199 <br /> MW-2 P 06/23/00 1363 773 590 NE <50 <0 5 <0 5 <0 5 <0 5 166 <br /> MW-2 NP 09/08/00 1363 867 496 Flat <50 <0 5 <0 5 <0 5 <0 5 121 <br /> MW-2 NP 12/11/00 1363 914 449 NE <50 <0 5 <0 5 <0 5 <0 5 827 <br /> MW-3 P 06/23/00 1400 8 11 589 NE <50 <0 5 <0 5 <0 5 <0 5 <2 <br /> MW-3 NP 09/08/00 1400 905 495 Flat <50 <0 5 <0 5 <0 5 <0 5 <2 5 <br /> MW-3 NP 12/11/00 1400 951 449 NE <50 <0 5 <0 5 <0 5 <0 5 <2 5 <br /> ms]=mean sea level <br /> bgs=below ground surface <br /> =Below detection limit for the analytical methods used <br /> L MTBE was analyzed using USEPA Method 8260 <br /> 12 Chromatogram Pattern Weathered Gasoline C6-C12+Unidentified Hydrocarbons C6-C12 <br /> Chromatogram Pattern Unidentified Hydrocarbons C6-C 12 <br /> C WARCOW)8MQ IRLY1200016080g400 Delta <br /> 1 of 1 1/30101 <br />