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• Tie, 0 f <br /> Groundwater Elevation and Analytical Data <br /> 76(Former BP)Service Station No 11193 <br /> 3202 W Hammer Lane, Stockton, California <br /> Well Date of P1NP Well Depth to Groundwater Groundwater TPHg TPHd TPH B T E X MtBE VOCs[1] DO <br /> Number Sampling Elevation Water Elevation Elevation (ug/L) (ug1L) (ug/L) (ug/L) (ug/L) (ug/L) (uglL) (ug/L) (ug/L) (ppm) <br /> (Feet) (Feet) (Feet) Change <br /> (Feet) <br /> Notes <br /> TPHd Total petroleum hydrocarbons as diesel DO Dissolved oxygen <br /> TPHg Total petroleum hydrocarbons as gasoline ppm Parts per million <br /> B Benzene ug1L Micrograms per liter <br /> T Toluene P/NP Purge/No Purge <br /> E Ethylbenzene ND Not detected above reported detection limit <br /> X Total xylenes --- Not measured/analyzed/applicable <br /> MtBE Methyl tert butyl ether <br /> VOC Halogenated volatile organic compounds <br /> [1) VOCs by EPA 8260B,not including BTEX and oxygenates <br /> [2] Halogenated VOCs 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 Volatile Organic Analysis(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 /> [7] Hydrocarbon reported in the gasoline range does not match the laboratory's gasoline standard <br /> [8] Sample contains a discrete peak in addition to gasoline <br /> [9] Lab reports that gs-Seloxane peaks were found in the sample which are not believed to be gasoline related if quantified as gasoline the concentration would be 50 ug1L <br /> kGonocoPhillipsUosco Marketingll 11931Tablesl1 1193 3QMR04 As Page 13 of 13 <br />