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i <br /> TABLE 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 6080 <br /> USEPA Method 8015/8020(DHS LUFT) <br /> 85 Louise Avenue,Lathrop,California <br /> I <br /> Top of Casing Static Water Groundwater Groundwater Ethyl- Total <br /> Well Sample Elevation Level Elevation Flow TPHg Benzene Toluene benzene Xylenes MtBE <br /> Number Date (feet ms!) (feet bgs) (feet msl) Direction p9/L AA kg/L uq/L p*L N9/L <br /> MW-3 P 6/23/2000 1400 811 589 NE <50 <05 <05 <0 5 <0 5 <2 0 <br /> NP 9/8/2000 I 905 495 Flat <50 <0 5 <0 5 <0 5 <0 5 <2 0 <br /> NP 12/11/2000 951 449 NE <50 <0 5 <0 5 <0 5 <0 5 <20 <br /> P 3/22/2001 845 555 NW <50 <05 <05 <0 5 <0 5 <2 0 <br /> P 6/25/2001 i 891 509 E <50 <05 <05 <0 5 <0 5 <2 0 <br /> P 9/24/2001 i 994 406 E <50 <05 <05 <0 5 <05 <2 0 <br /> P 12/3/2001 1 985 415 E <50 <0 50 <0 50 <0 50 <0 50 16 <br /> P 3/18/2002 1 850 550 E-NE <50 <0 50 <0 50 <0 50 <0 50 062 <br /> P 6/20/2002 1 935 465 E <50 <0 50 <0 50 <0 50 <0 50 056 <br /> P 9/9/2002 I 953 447 SE <50 <0 5 <05 <0 5 <05 06S <br /> P 12/6/2002 I 1014 386 E <50 <0 5 <0 5 <05 <0 5 1 8 <br /> P 3/14/2003 950 450 NE <50 <0 5 <0 5 <05 <0 5 <0 50 <br /> P 6/6/2003 I 903 497 E-NE <50 <0 5 <0 5 <05 <0 5 <0 5 <br /> P 9/15/2003 998 402 SE <50 <0 5 <0 5 <0 5 <0 5 <0 5 <br /> Notes <br /> 'Chromatogram Pattern Weathered Gasoline C6-C12+Unidentified Hydrocarbons C6 C12 <br /> ZChromatogram Pattern UnidentifiedHydrocarbonsC6 C12 <br /> < = Below detection limit for the analytical methods used <br /> bgs = below ground surface <br /> msl = mean sea level <br /> P/NP = Purged/Not Purged <br /> TPHg = Total petroleum hydrocarbons as gasoline(reported as GRO gasoline range organics) <br /> i <br /> Ng/L = micrograms per Liter <br /> j Data Qualifier Definitions <br /> U The analyte was analyze�d for,but was not detected above the sample reporting limit <br /> I <br /> J The analyte was positively identified,the associated numerical value is the approximate concentration of the analyte in the sample <br /> N The analysis indicates the presence of an analyte for which there is presumptive evidence to make a 'tentative identification" <br /> NJ The analysis indicates the presence of an analyte that has been"Tentatively identified"and the associated numerical value represents its approximate concentration <br /> UJ The analyte was not detected above the reported sample reporting limit However,the reported reporting limit is approximate and may or may not represent <br /> the actual limit of quantitation necessary to accurately and precisely measure the analyte in the sample <br /> R The sample results are rejected due to senous deficiencies in the ability to analyze the sample (i e,the presence or absence of the analyte cannot be verified) <br /> or the analyte identification has been refected(I e,the presence of the analyte cannot be verified) <br /> NO Not detected above repai ed detection limit <br /> K IWprocessUS BP ARC01060801Quarterlyi3 QTR 0316080 GWMR 3003 <br /> 2of2 <br /> I <br />