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I <br /> EXPLANATION <br /> 1 l <br /> MW-2 Monitoring well location i <br /> MW-1 Groundwater extraction well location <br /> DW-2 Deeper monitoring well location i /~ <br /> (not used in contouring) <br /> DW-1 0 Destroyed well location t / - <br /> - — - - Overhead electrical line(OE) <br /> E— Electrical line(E) t / NA <br /> Unknown utility line(?) i {!� NAS �1 <br /> Sanitary sewer line(SAN) t / f Z, * 0 50 looft <br /> Waterline(W) +4 f NA /,.. �i4 �'�,T`. 13 <br /> — — — P— Product piping line(P) i / i �I'11 17 EMI <br /> -__- — Fenceline � �` � 20 t / � ! NA <br /> — — — — Groundwater extractionstem PPi 1 1000 <br /> s <br /> s i in -,!, / 4, N© _. ; a <br /> Y g i i � <br /> 9 TBR isoconcentration contour, <br /> 310 <br /> In micrograms per liter(pg/L), efie,��� I ,z , <br /> dashed where inferred r r� iii, , , <br /> it ND <br /> Well designation 'ti i / ; •/ ND 9.s� + ! <br /> 24 <br /> —TBA ,_T + 9.1 I r 4.1 J 'rte <br /> TBA concentrations are in pq/L t ® , l <br /> Nates: �y4 NA , i;I f �� ��5,` ¢ , ,�l F N7A f <br /> J=Anal to was detected at a concentration below <br /> Y �. , <br /> the reporting limit and above the laboratory method i / f` ��� 13 ! �' �� ` w 1s <br /> detection limit. Reported value is estimated. \, i� / / / <br /> NA=Not analyzed �E, j I i < <,` r"RLe <br /> I!'1/i �` ,�pf s pie Pal / 1 <br /> ND=Not detected 1 <br /> 3 i $ ;- { / <br /> % 1 D� r r 1 , / Pflv..,e act <br /> NDa=Elevated reporting limit;see laboratory + -- 1_ ._ iI/ ,�; 100 <br /> report for details ; 9�Uc0 <br /> r, <br /> ' 1 y _ 10,000 ' �i / 3s <br /> .,:, 5 \ ` / <br /> 17 1 f <br /> 1,000'I NDa � / { <br /> / 39 r <br /> � I f <br /> � O t 330 y i { / { <br /> q No I <br /> cVVTosco <br /> 4_100 <br /> i 100+ <br /> f <br /> rim <br /> I <br /> s1® _ <br /> Figure S <br /> NA <br /> _ J <br /> TBA in Groundwater <br /> Isoconcentration Map <br /> NA —, -- --- ----- ---- ----a,? August 30-31, 2010 <br /> " Shell Stockton Terminal <br /> NA 3515 Navy Drive <br /> Stockton, California <br /> :\SheIN6-chars\2417--1241729-Stockton 3515 Navy Drive\241729-RBPORTS\241729-RPT28-3Q10&4Q10\241729 3QM10-TBA.DWG(01/2712011) <br />