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Figure E.7 <br /> N-17 Hydrocarbon Concentrations <br /> 1,000,000 1000 <br /> The concentrations temporarily increased General Long-Term Trend <br /> after pump shutdown for the start of the <br /> biological pilot study and are now steadily <br /> 100,000 decreasing. <br /> ' 100 <br /> Fj <br /> enzene(ug/L) <br /> oluene(ug/L) <br /> hyl benzene(ug/L)otal Xylenes(ug/L)10000 Y nzene,HS(ug/L)' 2 Toluene,HS(ug/L)10N Ethyl benzene HS(ug/L <br /> C = <br /> O Q Total Xylenes,HS(ug/L) <br /> i Z TPH-gasoline(mg/L) <br /> 43 1,000 1 \ – TPH-diesel(mg/L) <br /> C � —e--TPH-gas,HS(mg/L) <br /> 0 TPH-diesel,HS(mg/L) <br /> U 0 <br /> X G —�NAPH Thickness(feet) <br /> W <br /> m 100 0.1 Start of Bio Pilot Study <br /> w <br /> m <br /> 0 <br /> U <br /> 10 = <br /> 0.01 Note: <br /> Only detected values shown0. . <br /> 1 <br /> 1990 2000 2010 2020 2030 2040 2050001 <br /> Append ix_D_E_Time_Series_Charts.xls,E.7—N-17 <br />