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MATERIAL DENSITY POUNDS/GALLON POUNDS/FOOT3 <br /> Gasoline 0.732 6. 10 43.0 <br /> Benzene 0.879 7.32 56 . 0 <br /> Toluene 0.866 7.20 56. 0 <br /> Ethylbenzene 0.867 7.21 56 . 0 <br /> Xylene 0.860 7. 18 56 . 0 <br /> MTBE 0.740 6. 18 44.0 <br /> 5. The contamination concentrations approximate a straight line <br /> from the highest reported concentration at the former UST pit to <br /> the Non detected concentration limits noted in Figure 5 for soil <br /> and Figure 6 for groundwater. <br /> 6. One foot3 of soil weighs approximately 100 pounds and one <br /> foot of groundwater weighs approximately 63 pounds . <br /> 7. The original contamination concentrations in the soil and <br /> groundwater, highest, lowest and average, in parts per million, <br /> (PPM) are denoted in Table B. The concentrations are the <br /> reported values. <br /> TABLE B <br /> Original concentrations of Contaminants Reported in PPM <br /> 9 or`�nors 1tiCt'7 <br /> MATTER SOIL CONC WATER CONC <br /> HIGH LOW AVERAGE HIGH LOW AVERAGE <br /> TPHG 540 0 270 0. 69 0 0. 35 <br /> B 0.53 0 0.27 .019 0 0. 1 <br /> T 0.35 0 0. 18 .022 0 .011 <br /> E 1.5 0 0.75 .017 0 0.09 <br /> X 0.30 0 0. 15 .075 0 0. 038 <br /> MTBE 0 0 0 .005 0 0.003 <br /> 8. The original concentrations of contaminants for soil are the <br /> values obtained from the well construction data. The UST <br /> excavation was left open from July 1996 to November 1997 when the <br /> 10 <br />