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Figure E.6 <br /> N-16 Hydrocarbon Concentrations <br /> 1,000,000 <br /> 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 /> decreasing. <br /> 100,000 100 +Benzene(ug/L) <br /> �—Toluene(ug/L) <br /> —�Ethylbenzene(ug/L) <br /> N Total Xylenes(ug/L) <br /> • O <br /> _J 10,000 c --*—Benzene,HS(ug/L) <br /> Y <br /> 10 v a Toluene,HS(ug/L) <br /> Ethyl benzene HS(ug/L <br /> c <br /> O d =Total Xylenes,HS(ug/L) <br /> ` X Z TPH-gasoline(mg/L) <br /> 1,000 1 J —TPH-diesel(mg/L) <br /> U 89 ­9—TPH-gas,HS(mg/L) <br /> O — E <br /> U -- --- (n TPH-diesel,HS(mg/L) <br /> W ) _ --o—NAPH Thickness(feet) <br /> i O <br /> m 100 Start of Bio Pilot Study <br /> 0.1 <br /> c <br /> aD <br /> c <br /> O <br /> U <br /> 10 a <br /> 0.01 <br /> Note: <br /> Only detected values shown. <br /> 1 <br /> 1990 2000 2010 2020 2030 2040 2050001 <br /> Append ix_D_E_Time_Series_Charts.xls, E.6—N-16 <br />