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Figure E.5 <br /> N-15 Hydrocarbon Concentrations <br /> 1000 <br /> 1,000,000 G=e=neral Trend <br /> t Benzene7(ug/L) <br /> 100,000 100 _..F.-Toluene_ Ethyl beTotal Xy <br /> N <br /> d <br /> = t Benzene,HS(ug/L) <br /> Y <br /> 10 2 --e Toluene,HS(ug/L) <br /> J 10,000 Ethyl benzene HS(ug/L <br /> — <br /> a <br /> --r Total Xylenes,HS(ug/L) <br /> fA Z -a TPH-gasoline(mg/L) <br /> O - - --- TPH-diesel(mg/L) <br /> 1 <br /> _, <br /> 1000 <br /> L - a'! -TPH-gas,HS(mg/L) <br /> - TPH-diesel,HS(mg/L) <br /> NAPH Thickness(feet) <br /> O <br /> U Start of Bio Pilot Study <br /> w 0.1 r <br /> Ir- 100 <br /> CO - =_ <br /> c <br /> - O <br /> U <br /> 0.01 <br /> 10 <br /> NotedOnly etecte�values�Shown. <br /> 0.001 <br /> 1 <br /> 1990 2000 2010 2020 2030 2040 2050 <br /> Append ix_D_E_Time_Series_Charts.As, E.5_N-15 <br />