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I <br /> ' Page 20 of 20 <br /> � <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> 1ARC0 Service Station#2093 <br /> 13425 Tracy Blvd,Tracy,CA <br /> Well Depth Groundwater Groundwater�'I Product Ethyl Xylenes <br /> Well Date Bevation to Water Elevation Elevation Thickness TPHg Benzene Toluene benzene (total) MtBE DO <br /> Number Sampled (ft,MSL) (ft,TOC) (ft,MSL) Change(ft)f (ft) (ppb) (ppb) (ppb) (ppb) (ppb) {ppb) (mglL) <br /> TB-1 12/19/01 — — f -- <50 <0 50 <0 50 <0 50 <0 50 <br /> Notes — — <br /> TPHg=Total petroleum hydrocarbons as gasoline <br /> MtBE=Methyl lart-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 /> mglL=milligrams per liter <br /> P/NP=purged/not purged 1 <br /> TB-1 =Trip Blank <br /> =analyzed using EPA Method x260 <br /> ^=groundwater elevation corrected by adding 0 77 X product thickness <br /> <=below given laboratory detection limit <br /> --=not measured or analyzed(rn case of product thickness,none found) <br /> (a)=top of casing altered and casing not resurveyed,water-level measured frkim highest point of casing <br /> =Hydrocarbon pattern is present in the requested fuel quantitation range but not resemble the pattern of the requested fuel <br /> i <br /> ' � I <br /> �r <br /> k , <br /> I k , <br /> i l <br /> Pro1eaw)020931ReportslTablea/gwtables2093 xls I a <br />