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i • • <br /> TABLE 4 <br /> WELL CONCENTRATIONS <br /> Former Shell Service Station <br /> 1267 Country Club <br /> Stockton,CA <br /> WIC# 204-7524-0204 <br /> Measured Corrected SP TPPH TEPH B T E X MTBE Comments <br /> Sample GW Depth GW Elev <br /> Depth ft ft ft ft (u IL) (u ) (u IL) (u /L) ("a) (u /L) (u L) <br /> S-1 Top of Casing Elevation ft 5 201 1 <br /> 26-Feb-98 1329 1 -809 1 000 1400 1200 45 45 72 150 <10 Oxygenate Compounds by EPA 8260 ND except for RIPE 49 pb <br /> S-2 Top of Casing Elevation ft 4781 <br /> 26-Feb-98 1228 -750 000 1230001 7800 1 190 1 <20 1 670 1700 120 Oxygenate Compounds by EPA 8260 ND <br /> S-2 DUP <br /> 26-Feb-98 NA NA I NA 220DOL 6400 1 210 1 <20 1 690 1 1700 130 1 Oxygenate Compounds by EPA 8260 ND <br /> NS-3 To of CasingElevation ft 5311 1 <br /> 26-Feb-98 1326 1 -794 1 000 ( 530 1 530 53 1 52 44 34 <2 5 Oxygenate Compounds by EPA 8260 ND except for DIPE 200 ppb <br /> F26-Feb-98 <br /> 4 To of CasingElevation ft 5301 <br /> 12 57 -7 27 0 00 99 130 1 3 0 6 1 7 6 3 <2 5 Oxygenate Compounds b EPA 6260 ND <br /> F26 <br /> 5 To of Casing Elevation ft 3641 <br /> -Feb-98 1 1193 -8 29 000 <50 <50 1 <0 50 <0 50 <0 50 <0 50 1 <2 5 Oxygenate Compounds by EPA 8260 ND <br /> S-6 To of CasingElevation ft 4 00 <br /> 26-Feb-98 1243 -843 000 <50 <50 1 <0 50 <0 50 ' <0 50 1 <0 50 1 <2 5 Oxygenate Compounds by EPA 8260 ND <br /> Notes <br /> TPPH=Total Purgeable Petroleum Hydrocarbons carbon range C6-C12 by Modified EPA Method 8015 <br /> TEPH=Total Extractable Petroleum Hydrocarbons carbon range C6-C12 by Modified EPA Method 8015 <br /> BTEX =benzene,toluene,ethy4benzene,xylene by EPA Method 8020 <br /> 240-0943 I <br />