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B12 Q <br /> -0!�917-01 <500 <br /> �917-08* �917-05 <500 <br /> <190 <50 <190 0,1335 <br /> ]I� 4 Q B05 <br /> 632 Q' �B01 �0B03 • I --— <br /> �'9air 11� Ir a�f n�lll y��� �rrll <br /> Aim <br /> .find■■ ■u.jy--.0 l`■ Jm ■­ ■u4601■ ,� •-• 1 1 _ j <br /> 'T1 7;-063 1�kll 7-09* <br /> % <br /> ~ e.,r,,�. �' r} av,.1,:h ag.',._:ti�,`�ti�r...�/.(ti,p T,:`��yt. ft-t'--`,ii_-i-j��`�i{`1',,tr{_ _# �^}1,a.�"_r`�. .. •••II, t <br /> ,If OD <br /> , <br /> � 1040i <br /> 9 a"� <br /> PLOL <br /> 17 <br /> 9SS-817B-07A 1 17-10B34..• CB15 <br /> �B10 <br /> + B33 <br /> y B38-0 <br /> 817-D7B 904 <br /> 79 <br /> OA 917-07* , 4 ,B130 91500 917-14* <br /> <500 <br /> <15�B 3 <br /> } <br /> 6 <br /> �917-06 <br /> .917-02 4, <49 <br /> 450 'i <br /> - - <br /> ❑ <br /> ' <br /> �. <br /> 4! <br /> OB37 . t <br /> .a <br /> Legend Notes: <br /> Abbreviations: Monitoring Well and Historical Shallow Grab <br /> O Grab Groundwater Sample Location TPH-g Concentration Contour(Ng/L) 0 Former UST Drainage Channel -Contours are based on shallow groundwater well data. <=analyte is not detected above <br /> Concentrations are reported in micrograms per liter(Ng/L). the reported concentration. Groundwater Samples—TPH-g <br /> Groundwater Sample from Monitoring _ _ Inferred TPH-g Concentration Contour Q Former Building Structures —•— Fence Concentrations shown are from the most recent monitoring ==Sample location not used in N UST 817B <br /> Well (N9/L) Former Excavation Area well data as included in the 2023 Groundwater Monitoring generating contours. Port of Stockton,Rough&Ready Island <br /> ® Q Building 917 Outline Report(Geosyntec,2023)or the Groundwater Monitoring pg/L=microgram per liter Stockton,California <br /> Approximate Direction of Groundwater Flow Suspected Excavation Based on Annual Report for 2015(ERS,2016). TPH-g=total petroleum hydrocarbon <br /> in Shallow Groundwater Based on Review of 1 B##samples were collected in 1998-1999. <br /> Google Earth Images Circa 2010 (gasoline range) <br /> Historical Groundwater Monitoring Reports 817-D samples were collected in 2008. UST=underground storage tank Geosyntec° Figure <br /> Between 2007 and 2023 SS-817B samples were collected in 2019. <br /> Historical boring location source:Anchor QEA,May 2018. consultants <br /> -Aerial imagery source:Nearmap,June 2024. <br /> 0 40 v <br /> Feet WR2501 E November 2024 <br /> \\oakland-01\data\GIS\Port_Of Stockton\Rough-and-Ready-Island-PM\Project\USTs\2024-07_UST817B\Figures.aprx\Fig05_HistoricalGWSamples_TPHg 11/21/2024 4:06 PM(kwalton) <br />