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IMWI 1 <br /> Groundwater (not located to scale) <br />' GW Flow Direction Benzene 458 Benzene <50 (NM) <br /> Gradient = 0 004 Benzene 5,590 Toluene 23 Toluene 260 <br /> Toluene 19 300 Ethylbenzene 11 0 Ethyibenzene 970 <br />' Benzene 600 Ethyibenzene 3,270 Xylenes 120 Xylenes 3,790 <br /> Toluene 240 Xylenes 15 600 TPH-g 1,210 TPH-g 14 100 <br /> Ethylbenzene 154 TPH-g 104 000 MTBE(8021) 236 MTBE (8021) 700 (-1332) <br /> Xylenes 950 MTBE (8021) 180 MTBE(8260) <0 5 MTBE (8260) <50 MW13 <br />' TPH-g 4 380 MTBE (8260) <br /> <50 <br /> MTBE (8021) 103 <br /> MTBE (8260) <5 <br />' Benzene 890 <br /> Toluene 11,000 GNP�E P <br /> Ethyibenzene 3,510' NOgP Xylenes 16,600 <br /> TPH-g 106 000 Vol- <br /> -MTBE (8021) <50 SEMoe <br /> �O <br /> Benzene <0 5 4MWW 10 MW12 <br /> Toluene <05 BONA l <br /> (NM) <br /> Ethylbenzene <0 5 pFtO p,NO (NM) <br />' Xylenes <0 5 Benzene 5 9 <br /> MW9 TPH-g <50 RW4 Toluene 1�6 <br /> (-11 20) MTBE (8021) <0 5 (-1252) Ethylbenzene 1,240 <br />' . V3 Xylenes 8d2 <br /> (-1237) TPH-g 14,800 <br /> LPH PSVT UVB-MW2 (shallow) (-12 04) MTBE (8021) 1"4 <br /> E�r�v�N Benzene 2 4 Sheen __ UVB LPH MTBE (8260) 5 <br />' Toluene <0 5 (-11 61) UVB-MW1 dee 12 09 Sheen <br /> Ethylbenzene <0 5 RW2 i (NM} (deep) (- ) <br /> Xylenes <0 5 SW2 � (Dry)MW6 D Benzene 9,460 <br /> TPH-g 324 __- Toluene 13,700 <br /> MTBE (8021) 85 0 r' RMea V1 �� �PSV2 Benzene 5,380 Ethylbenzene 2 830 <br />' LEGEND <br /> MTBE (8260) 944 (-11 77� Toluene 12,200 Xylenes 13,700 <br /> MW4 + A Ethylbenzene 2,630 TPH-g 110,000 �} GROUNDWATER MONITORING WELL <br /> (-11 41 '+ �E ++ V2 Xylenes 10,600 MTBE (8021) 160 . PIEZOMETER <br /> * P189_11 8g TPH-g 75,500 MTBE (8260) <50 <br />' (NM) MW2 +� SW1___( ) RW1 t MTBE (8021) 150 • VAPOR EXTRACTION WELL <br /> 1 (-11 45) +V4_-(NM) �+(-11 82) ' MTBE (8260) <50 RECOVERY WELL <br /> + MW3 <br /> Benzene 9 8 (-11 63} + (-11 69) �+ (-11 62) Q PERMANENT SOIL VAPOR MONITORING WELL <br />' 1 lW1 (-11 35) �- + � MW51 Benzene 63 4 <br /> Toluene <0 5 1 P2/- ++ ++ '� �R �+ Toluene 31 3 + AIR SPARGING WELL <br /> Ethylbenzene 8 5 = 1 •NM r+ ++ �� + + FO AM\ON \% `-_+ Ethylbenzene 121 INJECTION WELL <br /> Xylenes 1 1 ( ) ti ++ �+ 5� ANG + Xylenes 116 <br />' TPH-g 738 m 1 �+ osv- - TPH-g 2 750 ( 2 09) Groundwater Elevation (feet) <br /> MTBE (8021) 101 �3 MW7 FOR ORM MTBE (8021) 29 5 <br /> MTBE (8260) <0 5 N (-11 20) 53 NpS +_ -� 1 F}S p K4 MTBE (8260) <0 5 (NM) Not Measured <br /> � 1 �S�P J -1 o4'1- PH-g Total Petroleum Hydrocarbons as Gasoline <br />' Z <br /> MTBE Methyl t-Butyl Ether <br /> MW8 1 MW1 "" Benzene 1 6 Benzene <0 5 LPH Liquid-phase Hydrocarbons <br /> �'�G (N M) � 11 12 - y Toluene 2 6 y Toluene <0 5 Analytical results in micrograms per liter(ug/L) <br /> � �` C� �( ) � Ethylbenzene 1 8 Ethylbenzene <0 5 <br />' 0 30 60 o fi� G �- Xylenes 5 9 Xylenes <0 5 <br /> Z 5% V TPH- <50 <br /> Scale(feet) TPH-g 246 9 <br /> MTBE (8021) 6 5 MTBE (8021) <0 5 <br /> MTBE (8260) <0 5 <br />' o SITE MAP SHOWING GROUNDWATER ELEVATIONS AND ANALYTICAL RESULTS FIGURE <br /> ' �� FORMER EXXON RS 7-3942 <br /> E <br /> � <br /> ENGINEIC 4444 NORTH PERSHING AVENUE, STOCKTON, CALIFORNIA <br />' ERING <br /> 10 SEPTEMBER 2002 <br />