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Figure E.3 <br /> N-7 Hydrocarbon Concentrations <br /> 1,000,000 1000 <br /> General Long-Term Trend <br /> 100,000 100 �—Benzene(ug/L) <br /> d Toluene(ug/L) <br /> O <br /> —�Ethyl benzene(ug/L) <br /> Total Xylenes(ug/L) <br /> J 10 000 Y --4--Benzene,HS(ug/L) <br /> ' 10 <br /> �--Toluene,HS(ug/L) <br /> Ethyl benzene HS(ug/L <br /> p Q —Total Xylenes,HS(ug/L) <br /> i ) Z TPH-gasoline(mg/L) <br /> 1'000 1 �—TPH-diesel(mg/L) <br /> v —e--TPH-gas,HS(mg/L) <br /> 0 N TPH-diesel,HS(mg/L) <br /> W �—NAPH Thickness(feet) <br /> m 100 0.1 Start of Bio Pilot Study <br /> w <br /> m <br /> U <br /> _ <br /> O <br /> U <br /> 2 <br /> 10 0.01 a <br /> Only detected values shown. <br /> 1 <br /> 0.001 <br /> 1990 2000 2010 2020 2030 2040 2050 <br /> Appendix_D_E_Time_Series_Charts.xls, E.3—N-7 <br />