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' t 1 <br /> ENTRY PORCH 0i 11 <br /> 213 4 <br /> NORTH BOREHOLE LOCATIONS = • <br /> STEPS <br /> • BH3 <br /> / ESTIMATED 100 ppm TPH <br /> `10 A �8 H 5 , FORMER UST LOCATION CONCENTRATION CONTOUR <br /> sHI <br /> ESTIMATED 500 ppm TPH <br /> 1 J CONCENTRATION CONTOUR <br /> � \ I <br /> ` SIDEWALK <br /> BH4 <br /> A' A At LOCATION OF CROSS SECTION <br /> Figure 4-2 Horizontal Extent of Soil Contamination <br />