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man m F m m ew <br /> Figure D.6 <br /> N-15 Hydrocarbon Concentrations <br /> 1,000,000 1000 —r-Benzene(ug/L) <br /> � Toluene(ug/L) <br /> — Ethyl benzene(ug/L) <br /> 100,000 <br /> 100 }, �Total Xylenes(ug/L) <br /> d <br /> w t Benzene,HIS(ug/L) <br /> N � Toluene,HIS(ug/L) <br /> d) <br /> y — Ethyl benzene HIS(ug/L <br /> 10,000 Aa jiii <br /> 10 F —e---Total Xylenes,HIS(ug/L) <br /> rn <br /> — TPH-gasoline(mg/L) <br /> a. <br /> O O Z —TPH-diesel(mg/L) <br /> :m <br /> 1,000 1 — TPH-gas,HIS(mg/L) <br /> d) - E --TPH-diesel,HIS(mg/L) <br /> O <br /> O C ��NAPH Thickness(feet) <br /> U /I0 O <br /> xl . „ —Start of Bio Pilot Study <br /> 100 0.1 <br /> m � <br /> d <br /> v <br /> c <br /> 0 <br /> 2 <br /> 10 0.01 F Nobe: <br /> * Only detected values shown. <br /> 1 0.001 <br /> 1990 1995 2000 2005 2010 2015 <br /> Appendix_D_E_Time_Series_Charts.xls,D.6 N-15 <br />