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�age3of3 <br /> d <br /> Table 1 a <br /> Groundwater Elevation and Analytical Data r <br /> ARCO Service Station#595 <br /> 6100 N Highway 99,Stockton,CA <br /> Well Depth Groundwater Groundwater Ethyl Xylenes MtBE M1BE <br /> Well Date Elevation to Water Elevation Elevation TPHg Benzene Toluene benzene (total) (EPA 6020) (EPA 8260) 00 <br /> Number Sampled (ft MSL) (ft TOC) (ft MSL) Change(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) <br /> M W 9 07/16/2002 P 3372 6355 2983 <50 <0 50 <0 50 <o 50 <0 50 <2 5 093 3 4 <br /> 10/02/2002 P 6617 3245 262 <50 <0 50 <0 50 <0 50 <0 50 0 55 010 <br /> 01117!2003 P 6501 -3129 lie <50 <0 50 <0 50 <0 50 <0 50 <2 5 0 61 1.23 <br /> MW 10 07/1 W2002 P 3127 61 16 2989 <50 eo 50 <0 50 <0 50 <0 50 <2 5 <0 50 2 8 <br /> 10102/2002 P 6360 32 33 244 <50 <0 50 <0 50 <0 50 <0 50 <2 5 <0 50 010 <br /> 01/17/2003 P 6270 3143 090 <50 <0 50 <0 50 <0 50 <0 50 <2 5 <0 50 175 <br /> DMW 1 7116 17102 P 34 30 6443 3013 <50 <0 50 26 0 51 2 8 3 a 2 3 2 7 <br /> 1010212002 P 6681 32 51 2 38 <50 <0 50 <0 50 <0 50 <0 50 <2 5 2 7 028 <br /> 01/17/2003 P 6570 -3140 1 11 <50 <0 50 <0 50 <0 50 <0 50 41 4 a 147 <br /> DMW 2 7116 17102 P 3362 7315 3953 -- <50 <0 50 2 2 <0 50 2 8 17 12 2 5 <br /> 10/=2002 P 6007 3245 708 <50 <0 50 <0 50 <0 50 <0 50 9 4 0 26 <br /> 01/17/2003 P 6590 3228 0 17 <50 <0 50 <0 50 <0 50 <0 50 6 6 7 1 189 <br /> DMW 3 07/16/2002 P 3271 6279 30 08 <50 <0 50 14 <0 50 13 73 53 <br /> 1010212D02 P 65 34 32 63 255 <50 <0 50 <0 50 <0 50 <0 50 <25 74 0 04 <br /> 01/17/2003 P 6415 -3144 119 110 <10 <10 <10 <10 130 170 132 <br /> WSW 11102!2000 <50 D <0 5150 <0 500 <0 500 <D 500 <2 50 <20 — <br /> 03105/2001 NP — <50 0 <0 500 <0 500 <0 500 <0 500 <2 50 <2 00 - <br /> 05/0812001 NP — <50 0 <0 5D0 <0 500 <0 500 <0 500 <2 50 <2 00 213 <br /> 081012001 NP <50 <0 50 <0 50 <0 50 <0 50 <2 5 <2 0 <br /> 10/23f2001 NP <50 <0 50 <0 50 <0 50 <0 50 <2 5 <1 0 2 25 <br /> 02101/2002 NP <50 <0 50 <0 50 <0 50 <0 50 <2 5 <0 50 <br /> 04/11/2002 NP <50 <0 50 <0 50 <0 50 <0 50 <2 5 <0 50 <br /> 07/1612002 NP <50 <0 50 <0 50 <0 50 <0 50 <2 5 <0 50 <br /> 101152!2002 NP <50 <0 50 <0 50 <0 50 <0 50 <D 50 <br /> 0 V1712003 NP — <50 <0 50 <0 50 <0 50 <0 50 <2 5 <0 50 <br /> Notes <br /> TPHg=Total petroleum hydrocarbons as gasoline <br /> ME=Methyl terl butyl ether =not measured Or analyzed <br /> DO=Dissolved oxygen <=below given laboratory detection limit <br /> EPA 8020=analyzed using EPA Method 8020 P1NP=purged/not purged <br /> EPA 8260=analyzed using EPA Method 8260 mg/L=milligrams per liter <br /> ft=feet ppb=parts per billion <br /> MSL=mean sea level T&1=Trip Blank <br /> TQC=top of casing WSW=Water supply well <br /> =Hydrocarbon pattern is present in the requested fuel quantdation range but does not resemble the pattern of requested fuel <br /> (a)=Chromatogram Pattem Gasoline 06-C10 <br /> (b)=This sample was analyzed beyond the EPA recommended holding time The results may still be useful for their intended purpose <br /> (c)=Discrete peak @ C6 C7 <br /> ProfeCtsARC015951ReportslTableslgwtables595 xis <br />