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i <br /> Fire Station #2 - Vapor Well VW-2d <br /> Ground Water Contaminant Trend <br /> 25000 - <br /> Air Sparge <br /> SV E startup 22,336 <br /> September 2001' , <br /> 20000 <br /> IM 15000 —�benzene <br /> � Oz1 --- toluene <br /> installed Ozone System ebenzene <br /> ;d Ozone SpargeFTerminated <br /> February xylenes <br /> startup July 2003 2005ry December 2004 mtbe <br /> 0 10000 12,dca <br /> v <br /> - ' ' - -TPH-gasoline <br /> 6,700 <br /> -4,500 <br /> 5000 5,100 --4,500 0 <br /> 1;%,500 2,700 <br /> 50 4 <br /> 350 <br /> 0 <br /> 19-Apr-01 05-Nov- 24-May- 10-Dec- 28-Jun-0314-Jan-04 01-Aug- 17-Feb- 05-Sep- 24-Mar- 10-Oct-06 <br /> 01 02 02 04 05 05 06 <br /> date <br />