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i i ! ! i i i i � •Jl♦ i � � � � � - Benzene <0 5 Benzene 1 540 Toluene <0 5 Toluene 830 CHATEAU Ethylbenzene <0 5 Ethylbenzene 5g4 HOSPITAL MWII Xylenes <0 5 (not located to scale) TPH-g 110 Xylenes 1690 TPH-g13000 Benzene Benzene <05 ) MTBE 8021 1712 ( ) MTBE (8021 1)} <12 Toluene <3� Toluene <0 5 NM MTBE (8260) 19 Benzene 38 Ethylbenzene 20 Ethylbenzene <0 5 MW9 PROFESSIONAL REALTOR Eth Toluene 53 TPH-g es 34 fi Xylenes <0 5 ylbenzene 8 9 1 500 TPH-g <50 (957) BUILDING Xylenes 307 MTBE (8021) 30 MTBE(8021) 12 (not located tMWia3 ti Benzene 11,000 TPS 1,200 MTBE (8260) <5 MTBE(8260) <5 Toluene 79 9 Toluene 19,000 MTBE(8021) 19 (-11 20)' Elh benzene 4,000 Benzene <0 5 Ethylbenzene 43 MTBE(��) Benzene <0 5 Benzene <0 5 Toluene <0 5 Xylenes 19,900 Xylenes. 403 Toluene <05 Ethylbenzene <45 TPH-g 140,000 Toluene <05 xylenes <0 5 TPH-g 3,700 MTBE(8021) <120 MW10 Ethylbenzene <0 5 Ethylbenzene <0 5 ,1711 am TPH-g 200 MTBE(8021) 24 ROS IE LANE (-10 63) Xylenes <0 5 Xylenes <0 5 MTBE (8021) 30 WME(8260) <5 LPH 002It TPH-g <50 MTBE (8260) 32 MTBE (8021) <0 5 TPH-g <50 MTBE(8021) <0 5 i -1018 $e luene UVB-MW2 V3 RW4 Toluene �p� RW2 PSVT MW12 Ethylbenzene 1 5 MW4 (-9 91) UV8 (shallow) (-1044] (-10 47) (-9 B7)+ Xylenes 06 (-964) ® UVB-MW1(deep)(_1021r TPH-g8021) 800 (41 V1 SW2 MVy6(-5 24)1 Benzene 3 6 MTBE (8021} 57 NM MW2 (_1001) NM Benzene <05 Toluene 081 MTBE (8260) <5 ( ) (-966) -------- ( ] O Toluene 056 Ethylbenzene 1 3 N €V SW1m i ♦V2 PSV2 Ethylbenzene <0 5 Xylenes 2 51 Benzene 13 IW1 (-974 (NM]�! 1 1000) Xylenes <05 TPH-g 350 Toluene 61 (-961) i TPH-g <50 MTBE (8021) 6 4 0 30 60 Ethylbenzene 240 OP2 Ifo MW3 MTBE(8021) <05 MTBE (8260) <5 Xylenes NM I _ TPH- 584 ( ) I fl _r=-- (g�)(.1000� LPH 0 02 ft Scale(feet) MTBE (8021) 17 5700 W I-- __� MTBE (8260) 22 r l r l I LEGEND Ill ll € I Benzene 130 0 WELL PROPOSED FOR DESTRUCTION J W o j (` )i I I I € FORM i Toluene 300 � (-9.22) Q i JI I ISTA €MW5 I Ethylbenzene 530 GROUNDWATER MONITORING WELL `h Lu u~i MW8 _Z MW1 FORMER j BUILDI G 1(-983) i Xylenes 1,450 • PIEZOMETER PUMP I TPH-g 17,000 Benzene <0 5 = (-943) ISLANDS I j! r€ I MTBE(8021) 24 ♦ VAPOR EXTRACTION WELL Toluene <0 5 I I€__ MTBE(8260) yr RECOVERY WELL Ethylbenzene <0 5 W I----- � TPH-g es <50 5 LPH 0 02 ft Benzene <0 5 O PERMANENT SOIL VAPOR MONITORING WELL x FORMER Toluene <0 5 + AIR SPARGING WELL MTBE (8021) <0 5 Benzene <0 S ___ __J USED D-' Toluene <05 __—_--- -- — OIL TANK Ethylbenzene <05 -$- INJECTION WELL O Ethylbenzene <0 5 Xylenes 064 Z Xylenes <45 Benzene <05 Benzene <05 TPH-g <50 (-961) Groundwater Elevation(ft msl) TPH-g <50 Toluene <0 5 Toluene <0 5 MTBE(8021) <0 5 ' Not Used to Determine Gradient MTBE 8021 Ethylbenzene <0 5 Ethylbenzene <0 5 ( } <0 5 (NM) Not Measured Groundwater Xylenes <0 5 Xylenes <0 5 TPH-g Total Petroleum Hydrocarbons as Gasoline GW Flow DirectionTPH-g B1 TPH-g 160 MTBE Methyl t-Butyl Ether MTBE (8021) 1 2 MTBE (8021) 29 LPH Liquid Phase Hydrocarbons(feat) a Gradient = 0003 to 0005 MTBE (8260) <5 MTBE (8260) <5 Analytical results tri micrograms per liter (ugl'Q I; SITE MAP SHOWING WELLS PROPOSED FOR DESTRUCTION AND FIGURE a ETIC GROUNDWATER SAMPLE ANALYTICAL RESULTS FORMER EXXON RS 7-3942, 4444 NORTH PERSHING AVENUE, STOCKTON, CALIFORNIA Englneenng,Inc 21 JUNE 2001