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I• � � � � � � � i• tl• 1� >• � � � s tt� �� <br /> Groundwater Benzene 83 CHATEAU <br /> HOSPITAL MW11 <br /> Toluene 170 (not located to scale <br /> C7w FIOW Direction Ethylbenzene 24 {NM} ) <br /> Gradient = 0 003 to 0 005 Xylenes 128 Benzene 11 Benzene <p 5 <br /> PROFESSIONAL TPH-g 970 REALTOR Toluene 110 Toluene <0 5 <br /> z BUILDING MTBE <0 5 Benzene 120 Ethylbenzene 440 Ethylbenzene <0 5 <br /> MW9� Toluene 180 Xylenes 1,150 Xylenes <0 5 MW13 <br /> W (NM) Ethylbenzene 19 TPH-g 6,000 TPH-g 62 {not located to scale) <br /> Benzene 73 Benzene 13,000 Xylenes 124 MTBE <2 5 MTBE <0 5 {-10 51)• <br /> Benzene <0 5 Toluene 12 Toluene 28,000 TPH-g 1,800 <br /> Toluene 58 Ethylbenzene 100 Ethylbenzene 4,100 MTBE <2 5 <br /> Ethylbenzene 082 Xylenes 241 Xylenes 21,400 Benzene <0 5 <br /> Xylenes 51 TPH-g 2,700 TPH-g 130,000 MW10 Toluene <0 5 <br /> TPH-g 360 MTBE <2 5 MTBE <120 ROS iE LANE (-10 00) Ethylbenzene <4 5 <br /> Xylenes 0 63 <br /> MTBE 13 TPH-g <50 <br /> MTBE(8260) 10 LPH Sheen MTBE <0 5 <br /> PSV1 (-g 66) <br /> Benzene <p 5 RW2UVB-MW2 V3 RW4 MW12 <br /> Toluene <0 5 MW4 (-937) UVB (shallow) (.982) (-999) (NM) <br /> Ethylbenzene <p 5 (-917) ♦ UVB-MW1(deep)(-9 63)• <br /> Xylenes 192 'P1 V1 SW2 MW6(-9 57) Benzene 56 <br /> TPH-9 690 NM MW2 (-9 45) (NM} Benzene <0 5 Toluene 088 N <br /> ( ) Toluene <0 5 <br /> MTBE <p 5 (-918) i V4 SW1 A V2 OO,PSV2 Ethylbenzene <0 5 Ethylbenzenegenes 1 7 <br /> I (-9 45) Xylenes 44 <br /> IW7 9 23 A (NM Xylenes <0 5 � <br /> Benzene 31 910) ( } I TPH-g 140 TPH-g 820 0 30 60 <br /> Toluene 11 I FORMER MTBE <0 5 <br /> Ethylbenzene 410 • P2 TANK MW3`RW1 ' MTBE <0 5 <br /> Xylenes 3675 (NM) I_FIELD __ (-9 06) (-947) Benzene 7,100 Scale(fest) <br /> TPH-g 4,200 I Toluene 22,000 LEGEND <br /> MTBE 37 ( <br /> MTBE 82 0) 22 MW7 I�i lei i Ethylbenzene 4,600 Xylenes 22,600 GROUNDWATER MONITORING WELL <br /> 9 98)I I I I 4 <br /> (-875) i f1 I� I I F RMER k MW5 TPH-g 130,000 • PIEZOMETER <br /> MW8 FORMER I S ATION I(-932) MTBE <W <br /> MW1 PUMP I 8 ILDING I • VAPOR EXTRACTION WELL <br /> j I Benzene 330 RECOVERY WELL <br /> Benzene 076 z (-895) ISLANDS <br /> I I I I Toluene 470 <br /> O PERMANENT SOIL VAPOR MONITORING WELL <br /> Toluene 2 B Ethylbenzene 1,400 <br /> Ethylbenzene 0 63 < Xylenes 3,210 ♦ AIR SPARGING WELL <br /> Xylenes 309 TPH-g 29,000 INJECTION WELL <br /> TPH-g <50<50 Z FORME MTBE <br /> MTBE <05 -------- - -----J USED t71LTANK (-910) Groundwater Elevation(ft msl) <br /> <L Benzene 2 Benzene 34 Benzene <0 5 " Not Used to Determine Gradient <br /> Benzene <0 5 a Toluene 6 Toluene 11 Toluene <0 5 <br /> Toluene <05 F Ethylbenzene 1 Ethylbenzene 18 Ethylbenzene <0 5 (NM) Not Measured <br /> Ethylbenzene <0 5 Xylenes 59 Xylenes 83 Xylenes 065 TPH-g Total Petroleum Hydrocarbons as Gasoline <br /> Xylenes 071 0 TPH-g 8$ TPH-g 90 TPH-g 190 MTBE Methyl t Butyl Ether,by EPA Method 8021 <br /> TPH-g <50 Z MTBE <0 5 MTBE <0 5 MTBE <0 5 LPH Liquid-Phase Hydrocarbons <br /> MTBE <p 5 Analytical results in micrograms per liter (ug/L) <br /> tel♦■AM SITE MAP SHOWING GROUNDWATER SAMPLE ANALYTICAL RESULTS FIGURE <br /> T FORMER EXXON RS 7-3942 <br /> � ■ ■ m, 4444 NORTH PERSHING AVENUE, STOCKTON, CALIFORNIA <br /> Engmemng,Inc 13 DECEMBER 2000 <br />