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1 <br />� AbhL0 <br /> A A' <br /> EXCAVATION AREA <br /> � I <br /> 15 (/■150 pm ! a 110 <br /> I--P Pm <br /> 20 ■ 2,600 ppm . <br /> • ESTIMATED 500 ppm TPH <br /> 25 CONCENTRATION CONTOUR <br /> - i 7,100 ppm <br /> ESTIMATED 100 ppm TPH <br /> • CONCENTRATION CONTOUR <br /> 35 <br /> 40 ■ BRL <br /> 1 ' <br /> 1 Figure 4-3. Cross Section A-A' Showing Vertical Extent of Soil Contamination <br /> 13 <br />