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Graph 3 - Concentrations of Hydrocarbons in Well NP-1-111 during C-Sparge System Operation <br /> 30 <br /> 2000 <br /> 1800 � ------- -- - - --- -- -- — - - - -- -- - - - - - <br /> 25 <br /> 1600 - <br /> 1400 - <br /> 600 1400 <br /> 20 <br /> 1200 <br /> CL <br /> CL <br /> CL -`-- 15 <br /> 1000 <br /> m <br /> 800 -- _- --- -__..--------- ---_ ---- --.�_ -- _ _ - <br /> 10 <br /> 600 ----.-- - . . _- - <br /> Baseline <br /> Began Pilot lest <br /> 400 - - - Additional Sparge Points Installed <br /> 5 <br /> 200 -- -- --- - -- - -- <br /> 0 <br /> 0 <br /> O`t' Off' <br /> �\Off' Off' 00 00 O`y , <br /> ^\`�O\ \ Q\�� �\0 <br /> o`� o '� <br /> sampling date <br /> -�-- TPHg (in ppb) --*-benzene (in ppb) <br /> i <br />