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Figure E.7 <br /> N-17 Hydrocarbon Concentrations <br /> 1,000,000 _ — 1000 <br /> General Long-Term Trend <br /> The concentrations temporarily increased <br /> after pump shutdown for the start of the <br /> biological pilot study and are now steadily <br /> decreasing. fenzene(ug/L) <br /> 100,000 100 oluene(ug/L) <br /> Ethyl benzene(ug/L) <br /> N Total Xylenes(ug/L) <br /> Y —4---Benzene,HS(ug/L) <br /> 10,000 10 .2 Toluene,HS(ug/L) <br /> �–Ethyl benzene HS(ug/L <br /> _ <br /> a —*—Total Xylenes,HS(ug/L) <br /> Z ---TPH-gasoline(mg/L) <br /> O <br /> 0 1 J —TPH-diesel(mg/L) <br /> +`+ 1,000 _ I 9 TPH-gas,HS(mg/L) <br /> C <br /> d <br /> v TPH-diesel,HS(mg/L) <br /> = <br /> O N ��NAPH Thickness(feet) <br /> C <br /> U O <br /> X a Start of Bio Pilot Study <br /> m100 0.1 <br /> O <br /> U <br /> 0.01 H <br /> 10 <br /> = Note: <br /> Only detected values shown. <br /> 1 0.001 <br /> 1990 2000 2010 2020 2030 2040 2050 <br /> Append ix_D_E_Time_Series_Charts.As,E.7_N-17 <br />