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ir <br /> Graph 6 - Concentrations of Hydrocarbons in Piezometer NP-2-116 during <br /> C-Sparge System Operation <br /> 90,000 60.0 <br /> 80,000 <br /> 50.0 <br /> 70,000 <br /> 60,000 40.0 <br /> r. <br /> ^. <br /> a <br /> yn np <br /> CL 50,000 - <br /> CL 30.0 <br /> as � <br /> 40,000 <br /> c <br /> m <br /> 30,000 20.0 <br /> v I�� 1 <br /> 20,000 Basel'ne <br /> Began Pilot Test Additional Sparge Point lnsta ed 10.0 <br /> 10,000 <br /> 0 0.0 <br /> SCR R a 01�0 0 �C3,5s, 5s, FS, 0 0 0 5 01 C: 5s, 5s, <br /> O O^ 00 �O NO Ory 00 ��O ryM ^a0 00 �� ry NO 00 ,�^§ryA ^O ryD� ORs hb ry Oy �O O� ,� ,�+'� �a ryh O� ,wry 00 00 ry^ NO <br /> �• h ►� +� O O O O O O O O O O O O O o 0 0 0 0 0 0 0 0 0 N 0 0 0 ^ 0 0 0 * O <br /> Sampling date <br /> --w-TPHg (ppb) --*—Ben (ppb) <br />