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s <br /> ell, � --F-i-e' . <br /> ENTRY PORCH 0' 1' 2i 3= 4' <br /> NORTH BOREHOLE LOCATIONS � • <br /> STEPS <br /> / • BH3 <br /> A ESTIMATED ION ppm TPR <br /> w BHS / FORMER UST LOCATION CONCENTRATION CONTOUR <br /> Fi <br /> B1 <br /> ESTIMATED 500 ppm TPH <br /> I CONCENTRATION CONTOUR <br /> \ S1DEWALK <br /> BH4 1-0*0 <br /> A' A - A' LOCATION OF CROSS SECTION <br /> Figure 4-2. Horizontal Extent of Soil Contamination <br />