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ENTRY PORCH Q' 1' 2j 34' <br /> NORTH BOREHOLE LOCATIONS = <br /> STEPS <br /> • <br /> r � • BH3 <br /> r, A / 1 ESTIMATED 100 ppm TPN <br /> BH5 FORMER UST LOCATION CONCENTRATION CONTOUR <br /> BHI <br /> j<- ESTIMATED 500 ppm TPH <br /> CONCENTRATION CONTOUR . <br /> 1 <br /> SIDEWALK <br /> BH4 <br /> As A — A' LOCATION OF CROSS SECTION <br /> i <br /> Figure 4-2. Horizontal Extent of Soil Contamination <br />