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Figure E.1 <br /> 0-1 Hydrocarbon Concentrations <br /> 1000 <br /> 1,000,000 General Long-Term Trend <br /> TBenene(ug/L) <br /> 100ne(ug/L) <br /> 100,000 benzene(ug/L) <br /> Xylenes(ug/L) <br /> to <br /> O --�-Benzene,HS(ug/L) <br /> C <br /> 10 2 --e--Toluene,HS(ug/L) <br /> J 10,000 Ethyl benzene HS(ug/L <br /> Total Xylenes,HS(ug/L) <br /> ato Z —TPH-gasoline(mg/L) <br /> C _ <br /> TPH-diesel(mg/L) <br /> 0 1 J --TPH-gas,HS(mg/L) <br /> L 1,000 °' <br /> C E TPH-diesel,HS(mg/L) <br /> d <br /> V N <br /> C t NAPH Thickness(feet) <br /> p O <br /> U � —Start of Bio Pilot Study <br /> x 0.1 <br /> LU <br /> 100 L) <br /> c <br /> O <br /> ' i I 0.01 <br /> 10 <br /> _ Note: <br /> -- Only detecte�values�Shown. <br /> 0.001 <br /> 1 2040 2050 <br /> 1990 2000 2010 2020 2030 <br /> Append ix_D_E_Time_Series_Charts.xls, E.10-1 <br />