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Tahoe 3 <br /> Groundwater Elevation and Analytical Data <br /> Tosco (Former BP)Station No. 11193 <br /> 3202 W. Hammer Lane, Stockton, California <br /> Well Date of P/NP Well Depth to Groundwater Groundwater TPH-G TPH-D TPH B T E X MtBE VOCs[l] Do <br /> Number Sampling Elevation Water Elevation Elevation (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug1L) (ug/L) OWL) (ppm) <br /> (Feet) (Feet) (Feet) Change <br /> (Feet) <br /> QC-2 4/12/1995 --- --- --- ND<50 --- --- ND<0.50 ND<0.50 ND<0.50 ND<1.0 <br /> (cont.) 7/20/1995 --- --- --- ND<50 --- --- ND<0.50 ND<0.50 ND<0.50 ND<1.0 - <br /> 11/2/1995 --- --- --- ND<50 --- --- ND<0.5 ND<0.5 ND<0.5 ND<1.0 ND<5.0 --- <br /> 1l16l1996 --- -- ND<50 --- --- ND<0.50 ND<0.50 ND<0.50 ND<1.0 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 --- --- ND<0.5 ND<l ND<1 ND<1 ND<10 - <br /> Notes: <br /> (I] Volatile organic compounds(VOCs)(EPA 8260B),not inlcuding 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 vial. <br /> Analysis conducted in excess of EPA recommended hold time, results should be considered biased low. <br /> [5] Napthalene <br /> [6] Discrete Peak @ MtBE... <br /> P/NP Purge/No Purge <br /> --- Not measuredlanalyzedlapplicable <br /> B Benzene <br /> DO Dissolved oxygen <br /> E Ethylbenzene <br /> VOC Halogenated volatile organic compounds <br /> MtBE Methyl tert butyl ether <br /> ND Not detected above reported detection limit <br /> ppm Parts per million <br /> T Toluene ter <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 /> I:IConocoPhillipslTosco Marketing1111931Tables111193 2QMR03.)ls Page 11 of 11 <br /> s <br />