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Table 1 Page 1 of 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#760 <br /> 225 South Cherokee Lane,Lodi,CA <br /> Well Depth GW GW Ethyl- Xylenes <br /> Well Date Elev. to Water Elev. Elev. TPHg Benzene Toluene benzene (total) MtBE DO <br /> No. Sampled (ft,MSL) (ft,TOC) (ft,MSL) Change(ft) pg/L ug/L ug/L ,ug/L ug/L /pg/L (mg/L) <br /> MW-1 10/3/2002 P 52.91 60.60 -7.69 -- <50 <0.5 <0.5 <0.5 <0.5 0.91 -- <br /> 1/30/2003 57.01 -4.10 3.59 <50 <0.5 <0.5 <0.5 1.2 0.57 2.0 <br /> 4/10/2003 P 56.67 -3.76 0.34 <50 <0.5 <0.5 <0.5 <0.5 1.6 0.8 <br /> MW-2 10/3/2002 P 53.27 60.91 -7.64 -- 410 3.2 8.5 6 9.5 3.7 -- <br /> 1/30/2003 57.35 -4.08 3.56 <50 <0.5 <0.5 <0.5 1.2 <0.5 1.1 <br /> 4/10/2003 P 57.07 -3.80 0.28 130 <0.5 <0.5 <0.5 1.6 0.56 0.9 <br /> MW-3 10/3/2002 P 54.38 60.73 -6.35 -- 140 <0.5 <0.5 1 0.89 <0.5 -- <br /> 1/30/2003 58.34 -3.96 2.39 130 <0.50 <0.50 <0.50 0.78 <0.5 2.1 • <br /> 4/10/2003 P 57.41 -3.03 0.93 140 <0.5 <0.5 <0.5 1.1 0.68 1.8 <br /> Notes: <br /> GW=Groundwater <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 /> ,ug/L=micrograms per liter <br /> mg/L=milligrams per liter <br /> P/NP=purged/not purged <br /> <=below given laboratory detection limit <br /> • <br /> K1Wprocess\J5 SP ARC0\00761\0uarterIN QTR 03\760 GWMR 2003 <br />