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II <br /> 4 <br /> A <br /> Graph 1 - Concentrations of Hydrocarbons in Well NP-1-22 during C-Sparge System Operation <br /> 30000 - 1400 <br /> 25000 1200 <br /> 1000 <br /> 20000 - -- <br /> �. 800 <br /> � a <br /> CL <br /> CL <br /> 15000 - - - ---- - -- - <br /> Additional Sparge Points Installed <br /> Baseline 600 m <br /> 10000 <br /> 400 <br /> 5000 <br /> Began Pilot Test I 200 <br /> I <br /> I <br /> i <br /> 0 8 i 0 0- 0 <br /> SO os 9b Rj 0 0 0 0 0 0 0 0 ►. . . +� . ►� ►� �l. ti ti �, ti ti ti ti 'L `L ti `� 3 <br /> 000\��`�o �o �o ^\°�`�o� A� oZry^O'�ti`�Oo�o o�o�'o '``°�o`��o�'�Oo�0`0��,-41z, �o`�Jo �Ooo�'`�oAo '`�o�`�°�o�o�o °�o o��o`'�o �'o.��o�o��'`A01�`�N00�'`\o�ti�Oo�ti�'o�,�o�oy�`��o��C'o.�� � �� 0� oh �°h\O�`1'^���\O\����,°�, <br /> 04' O o 0 <br /> Sampling date <br /> • -- --TPHg (In ppb) +benzene (In ppb) <br /> I <br />