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E�XRLANATION �� 9 <br /> MW-2 ♦ Monitoring well location i <br /> MW-1 Groundwater extraction well location i F MNS9 . <br /> DW-2 Deeper monitoring well location t <br /> (not used in contouring) / <br /> DW-1 0 Destroyed well location <br /> -- — —�— Overhead electrical line(OE) �$ fNS <br /> — — -- Electrical line{E} <br /> FIR <br /> -- — — ?— Unknown utility line <br /> — — —9�— Sanitary sewer line(SAN) i / 1� its ���.� i 2 # Ns oo !Dort <br /> t / Y.. iii' <br /> Water line(W} ♦r� iii r �� ` �`_� 13000 ( I <br /> — — — p— Product piping line(P) i l Ns r�ii; ,� I 48" 410 / + <br /> t , rl/ r . o <br /> — Fenceline s rr ; ,F 7751 <br /> i►' `q�� <br /> — — — — Groundwater extraction i f Ilr r, • 10 040 <br /> system piping <br /> ND <br /> r <br /> o <br /> 5k 7`,., „ i 1,444' <br /> d ' <br /> ! Benzene Isoconcentration contour, + ti , / ,o , � �<�m ,�13`,?� �� �� — 7.2" / <br /> �� in micrograms per liter(pglL), l % a�� �l�I/i `` 1� <br /> dashed where inferred # „ , i 2 3 <br /> 90 <br /> --Well designation 1 it 11 '� NQ <br /> N°, <br /> Benz. --Benzene concentrations are in pg]L l ! j !�I f 11 �,� 'i�� `� zap I j IMMI <br /> Notes: ! i !/�l,/ Is !" Ili NS �` MYV•17 ��/ NS // <br /> ND=Not detected 40 �y , 440 2.1 -. NS <br /> NS=Not sampled , ! i war�h / <br /> "=Sampled February 10,2010. <br /> �. I TNRak <br /> 104 <br /> 1,000 <br /> 2400 <br /> 3 700 <br /> 11ND <br /> FN DF <br /> Q ND, ND" ill iI �I Tosco <br /> U-) b i 29 ��4.` c ® <br /> 'ell t 0.7$" pORC,NF a . <br /> MW-27 <br /> Tose � <br /> I i <br /> ND <br /> ND <br /> Figure 6 <br /> EM <br /> ND —, Benzene in Groundwater- Isoconcentration Map <br /> CZMI~l February 3, 2010 <br /> "° f! Shell Stockton Terminal <br /> 3515 Navy Drive, Stockton, California <br /> i <br /> I:ISheIR6-chars12417-=1241729-Stockton 3515 Navy Drive1241729-REPORTS1241729-RPT27-1&20101241729 1QM10-BENZ.DWG(712212010) <br />