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I <br /> E <br /> -------------------- - <br /> { <br /> E <br /> 1 <br /> ----------------- <br /> x x <br /> AREA 88 - <br /> 0 20 60ft <br /> 1 ' <br /> i� 10 MW-7 1; <br /> 1 <br /> (2`10) <br /> x x <br /> LEGEND <br /> ' x x x X ` • GROUNDWATER MONITORING WELL(CRA) <br /> - -FORMER PIPELINES-APPROXIMATE LOCATION <br /> x - - - PROPERTY BOUNDARY <br /> ' -•.,__ <br /> ' x x ---------------------PROPOSED DEVELOPMENT <br /> ' x --- --- -- - <br /> —PARCEL BOUNDARIES <br /> I — — O)H —PG&E OVERHEAD POWER LINES <br /> I I� EXCAVATION FOOTPRINT <br /> —25—---- TPHc CONCENTRATION CONTOUR <br /> >� DASHED WHERE INFERRED <br /> (41) TPHc CONCENTRATIONS ARE IN t <br /> 1 MILLIGRAMS PER KILOGRAM(mglkg) <br /> NOTES: <br /> ' AREA B9 • FBG-FEET BELOW GROUND <br /> 7 . TPHc-TOTAL PETROLEUM HYDROCARBONS AS CRUDE OIL <br /> ' • SOIL TPHc CONCENTRATIONS SHOWN ONLY FOR BORINGS <br /> ' x WHERE DETECTED ABOVE REPORTING LIMIT OF 25 mglkg <br /> X x i! <br /> 1 x x I <br /> 25, <br /> MW-4 <br /> I x <br /> a � <br /> d <br /> CORAL <br /> x <br /> x x x x <br /> ' X+. X <br /> x x <br /> x x <br /> 1 I <br /> ' x AREA B10 <br /> x <br /> X x x X— figure 4 <br /> ' TPHc CONCENTRATIONS IN SOIL 5-15 FBG <br /> AREAS 138 AND 139, NEIGHBORHOOD B <br /> L <br /> FORMER SHELL CENTRAL VALLEY E CRUDE OI PIPELINES <br /> y SOURCE,SAIL, 91 2066.MONITORING WELL LOCATIONS MW-1 THRU MW-198AGED ON Tracy, California <br /> MID COAST ENGINEERING SURVEY DATED M. <br /> 60222-95(011)GN-WA004 DEC 1412010 <br />