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l <br /> EXPLANATION <br /> MW-2 Monitoring well location t N$ <br /> MW-1 Groundwater extraction well location <br /> s -* <br /> DW-2 Deeper monitoring well location Il / <br /> (not used in contouring) 1 <br /> S <br /> DW-I 0 Destroyed well location <br /> -- --- -� �— Overhead electrical line(OE) li l * N � � <br /> — — — — Electrical line(E) <br /> -- --- -- — Unknown utility line <br /> Sanitary sewer line(SAN) 4 i f �� NS 2k NS # 0 50 1 Dort <br /> — — — W-- Water line r, <br /> { E NS z \ <br /> -- — — P— Product piping line(P) i / if! / 51so0"^ 3740 <br /> ---• - -- Fenceline za 1!r� �i , - -__ ib I N5 <br /> 1 �rii /, 33 <br /> — --- -- -- Groundwater extraction ti .� / 1 i i r 000 h l <br /> system piping ` i>, 47 <br /> m TPH isoconcentration contour, 1 °• r � \' �3��* / 'v1`c`�''' app •�\ <br /> loo 9 t f 10 lrrf „ <br /> in micrograms per liter(pg/L), <br /> dashed where inferred �y i Tai `tom ,1%'� % l Iso^ <br /> .,Well designation // s yk1 ��f\ .. f s90"} n� s <br /> � <br /> 300 `,fPH <br /> —TPH concentrations are in IL 1 i ! ' ' r` Q. 1l ' <br /> g lag � � � /� @ n� � i � �� � � / <br /> Notes; , ; i ,� �M-'7 <br /> J=Analyte was detected at a concentration below 1 ( `/, r /,�i NS .. 1. / * / <br /> the reporting limit and above the laboratory method t . by 1600 /� r i 2 �1rr` �'' h ¢ NS ! / <br /> detection limit. Reported value is estimated. ` �� i r f , ; _�� i i oUs� : ;r / <br /> ND=Not detected Tr k Loafing /; Fg -`f s i%ws f <br /> NS=Not sampled <br /> n_Analyte present in associated method blank, rr 2700 ^�' ' 10,000 <br /> -Sampled February 10,2010. + i - �= / ♦ rf / 100,' rr <br /> 2.55000`� 17 QVilti <br /> $30(1 <br /> — 230 <br /> 28J ow-1 ! , , / f Tosco <br /> ~170r � 2$0"'" �LA�RL7���� �% / f <br /> MW-27 <br /> IPrater I <br /> 29J** <br /> M: <br /> Figure 4 <br /> .r <br /> --; TPHg in Groundwater Isoconcentration Map <br /> IMM " February 3, 2010 <br /> z7J '' Shell Stockton Terminal <br /> 3515 Navy Drive, Stockton, California <br /> I:1She1116-chers12417--1241729-Stockton 3615 Navy Drive1241729-REPORTS1241729-RP'X27-1&2Q10\2417291QM10-TPHG,DWG(712612010) <br />