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• • i <br /> Table 2 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#5450 <br /> 1617 West Fremont Street,Stockton,CA /L <br /> VAAI <br /> Well Depth Groundwater Groundwater Ethyl- Xylenes <br /> Well Date P/NP Elevation to Water Elevation Elevation TPHg Benzene Toluene benzene (total) MtBE' DO <br /> Number Sampled (ft,MSL) (ft,TOC) (ft,MSL) Change(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) <br /> MW-2 9111102 P 8.87 11.37 -2.50 -- 98 <0.50 <0.50 <0.50 <0.50 62 -- <br /> MW-3 9111102 P 8.77 11.35 -2.58 -- <50 <0.50 <0.50 <0.50 <0.50 0.77 - <br /> MW-4 9111102 P 8.66 11.34 -2.68 — <50 <0.50 <0.50 <0.50 <0.50 <0.50 -- <br /> Notes: <br /> TPHg=Total petroleum hydrocarbons as gasoline <br /> MtBE=Methyl tert-butyl ether <br /> DO=Dissolved oxygen <br /> ft=feet <br /> MSL=mean sea level <br /> TOC=top of casing <br /> ppb=parts per billion <br /> mg/L=milligrams per liter <br /> PINP=purged/not purged <br /> "=analyzed using EPA Method 8260 <br /> <=below given laboratory detection limit <br /> --=not measured or calculated <br />