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CAD File Drawn ByDote Pro]eet No <br /> G\\3374\60\33746005 dw D Ludlam '3/13/04 3374 60 <br /> 8,000- <br /> 7,000 - <br /> 6,000 - <br /> 5,000 - <br /> E <br /> ,0007,0008,0005,000E <br /> ao <br /> o—TPK-G <br /> —E�—Benzene <br /> 4,000 —6—Toluene <br /> —ID—Ethylbenzene <br /> —*—Total Venes <br /> 3,000 <br /> c <br /> 0 <br /> V <br /> 2,000 <br /> 1,000 - v <br /> 0 <br /> 01/05/98 04/15/98 D7/24/98 11/01/98 02!09199 05/20199 08/28/99 12/08/99 03/15/00 06123100 <br /> Date <br /> Figure 7 <br /> Historical Chemical Concentrations in <br /> Ground IMateratMW-I <br /> Tank 1 Area <br /> FormerHeinz Facility <br /> Tracy, California <br /> ERM OIAV <br />