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Table 1 Page of 9 <br /> Summary of Results of Groundwater Monitoring <br /> BP Oil 11193 <br /> 3202 W Hammer Lane, Stockton, California <br /> Well Date of P/NP Well Depth to Groundwater Groundwater TPHG TPH-D TPH B T E X MTBE VOCs[1] DO <br /> Number Sampling Elevation Water Elevation Elevation (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ppm) <br /> (Feet) (Feet) (Feet) Change <br /> (Feet) <br /> I 37T 1993 --- --- ND<50 --- ND<O 5 ND<O 5 ND<O 5 ND<0 5 <br /> QC-2 1/7/1994 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 - - <br /> (cont) 4/20/1994 --- - ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 - <br /> 7/28/1994 --- - ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 --- <br /> 12/9/1994 --- --- --- ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<1 --- - - <br /> 3/3/1995 --- --- --- - ND<50 - ND<0 50 ND<0 50 ND<0 50 ND<l 0 --- <br /> 4/12/1995 - - ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 --- <br /> 7/20/1995 --- ___ ND<50 --- - ND<0 50 ND<0 50 ND<0 50 ND<l 0 --- <br /> 11/2/1995 --- ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<l 0 ND<5 0 --- <br /> 1/16/1996 ... -- ND<50 --- ND<0 50 ND<0 50 ND<0 50 ND<l 0 ND<5 0 --- --- <br /> 4/22/1996 - ND<50 -- --- ND<0 5 ND<l ND<1 ND<1 ND<10 - <br /> 7/12/1996 --- --- - ND<50 --- --- N0<0 5 ND<l ND<l ND<1 ND<10 --- <br /> Notes <br /> [1] Volatile organic compounds(VOCs)(EPA 82608),not inicuding BTEX and oxygenates <br /> [2] Halogenated volatile organic compounds only <br /> [3] Analysis conducted in excess of EPA recommended hold time,results should be considered biased low <br /> [4] Lab reports significant headspace in VOA mal <br /> Analysis conducted in excess of EPA recommended hold time,results should be conssdered biased low <br /> [5] Napthalene <br /> P/NP Purge/No Purge <br /> --- Not measured/analyzedlappltcable <br /> TAME t-Amyl Methyl Ether <br /> B Benzene <br /> DIPE DAsopropyl Ether <br /> DO Dissolved oxygen <br /> E Ethylbenzene <br /> EDB 12 Dibromoethane <br /> EDC 1,2-Dtchloroethane <br /> ETBE Ethyl t-Butyl Ether <br /> VOC Halogenated volatile organic compounds <br /> MTBE Methyl tert butyl ether <br /> ND Not detected above reported detection limit <br /> I <br /> ppm Parts per million <br /> T Toluene <br /> TBA t Butyl Alcohol <br /> TPH Total petroleum hydrocarbons <br /> TPH D Total petroleum hydrocarbons as diesel <br /> TPH G Total petroleum hydrocarbons as gasoline <br /> ug/L Micrograms per liter <br /> X Total xylenes <br /> k U5 BP ARCOl1 i 1931Quarterlyl4_0TR 027able 1_2_3 As <br />