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- y <br /> EXPLANATION +o <br /> t 6 <br /> MW-2 } Monitoring well locationam <br /> k <br /> MW-1 Groundwater extraction well location LN8 <br /> DW-2 Deeper monitoring well location ►k / o i <br /> (not used in contouring) <br /> DW-1 X� Destroyed well location <br /> — — —��-- Overhead electrical line(OE) _ i N5 * \� <br /> -- — — £— <br /> Electrical line(l=) % i 9F <br /> — — — -- Unknown utility line <br /> -- — — S '— Sanitary sewer line(SAN)NS 21 NS` j % 0 50 1 00f <br /> k / I � < NS NDA a <br /> — — — W— Water line'(W) i N5 <br /> — — ~- P --- Product piping line(P) tit I liiiil t7 <br /> k I liri ! 7 500 <br /> - -- Fenceline <br /> — — — -- Groundwater extraction / <br /> system piping i "— ,/ 7.9J �'�_ -.,� � 1,000 / <br /> AY <br /> 7 �„ ♦ 1�y ,�;i�•: �4 100 Q I <br /> TBA isoconcentration contour, I 0 I;6j�_ ` <br /> Op <br /> J� <br /> in micrograms per liter(Wglt_), y � / 10 ' ' �13 �ss <br /> dashed where inferred NDA <br /> J� J NDo <br /> Well designation � � � /�` r` ND T ��.,,�+ <br /> 7�A - NA <br /> TBA concentrations are in pg1L �; 24 r <br /> FNA9 r / l` , , ,Notes: 1 ; !, i iI/! ��� BMW 13 .�1!1!/ _N5 fiVJ-i7 rIi l NS I <br /> J=Analyte was detected at a concentration below ! ' �/� - !! '� :� <br /> the reporting limit and above the laboratory method 2? <br /> NDa <br /> detection limit. Reported value is estimated. i i / ► <br /> NA=Not.analyzed R <br /> ND=Not detected ,` ' i 2100 j i <br /> ! ! Y Privela Pcprsty <br /> NDa=Elevated reporting limit;see laboratory 1,000 ,! l 100 <br /> report for details <br /> NS=Not sampled i ~� ' <br /> A=Sampled February 10,2010. i ��` 10'000 12 370J % ♦ ; ;�1/ / <br /> a ND *7� t _q I 1 800 _ DVV# Qr� Trico <br /> VLA , / l I I <br /> FND is 100 3 OW <br /> 10 <br /> If <br /> 24A + <br /> CEM <br /> fMMNQ <br /> L J --- -- -- - ; — _ `- _ ND <br /> Figure 8 <br /> —' TBA in Groundwater lsoconcentration Map <br /> MM <br /> k LI <br /> February 3, 2010 <br /> NA -- _ Shell Stockton Terminal <br /> 3515 Navy Drive, Stockton, California <br /> 1:1Shelll6-chars12417--1241729-Stockton 3515 Navy Drive1241729-REPQRTS1241729-RPT27-1&2Q101241729 iQM10-TBA.DWG(712212010) <br />