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� �war �� ■■■� t1ll� t� � � � � t� � � ■� � �� Benzene- 4,900 Benzene- 380 Toluene- 230 Toluene- 1,300 Benzene- 510 Ethylbenzene- 120 Ethylbenzene- 714 Xylenes- 490 Xylenes- 2,000 Toluene- 130 Z Ethylbenzene- 150 TPH-g-13,000 TPM-g-16,000 w Xylenes- 400 MW13 -3 MW9 PROFESSIONAL CHATEAU TPH-g- 5,700 Y BUILDING REALTOR HOSPITAL I. Benzene- 100 Benzene- 1 3 Toluene- 68 Toluene- 10 MW10 Ethylbenzene- 59 Ethylbenzene- 310 ROSEMARIE LANE Xylenes- 35 Xylenes- 200 TPH-g- 620 TPH-g- 3,200 BenZenB- 55 PSV1 Q V3 RW4 Mw12 16 Toluene- 3 B RW2 SW2 RW3 Ethylbenzene- 210 MW4 ♦ Benzene- 1,300 Benzene- 4,100 Benzene- <0 5 Xylenes- 240 P1 Toluene- 4,700 Toluene- 26,000 Toluene- <0 5 U Z TPH-g- 2.100 MW2 r————�1 MW 0j Ethylbenzene- 1,400 Ethylbenzene- 4,000 Ethylbenzene- <0 5 ,,_o SW1 Iw1 I I psv2 Xylenes- 4,800 Xylenes- 18,000 Xylenes- <0 5 I V2 TPH- 28,000 TPH-g- 100,000 TPH-g- <50 N(n N Benzene- 35 I V4 �II g- ' Toluene- 5 0 P2 I �`Mw3 Rw1 Ethylbenzene- 96 LrTank- Xylenes - 82 -Q� Field j Indicated TP H- 1,800 MW7 Benzene- 21,000 g I I Direction of Toluene- 43,000 MW1 i i Former 5 Ethylbenzene- 3,700 Hydraulic Mwa station Gradient W Z Former I Budding I Xylenes- 20,000 Pump I I TPH-g- 160,000 CO j Islands I I I Benzene- 290 Toluene- 1,900 a UI Benzene- <0 5 ——— Former } Air Sparging Well Ethylbenzene- 1,900 P a Toluene- 3 5 oUseda Xylenes- 7,500 o Ethylbenzene- 1 7 Tank 4 Permanent Soil Vapor Monitoring Well TPH9- 28,000 Z Xylenes- 5 2 Piezometer TPH-g- 780 Injection Well Soil Vapor Extraction Well 0 60 120 Recovery Well Groundwater Monitoring Well Approx. Scale (feet) Drawn AJW Date 8/12/94 Figure 1 Site map showing concentrations (gg/b) of petroleum hydrocarbons in samples Reviewed Dare of groundwater, former Exxon RS 7-3942, Stockton, California, 02 August 1994 Rev Date Final Date r 793421g0894 FH3