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Extent of TCE <br /> prior to remediation (1991) ' 1 <br /> 1 f <br /> 1 f <br /> 1 Il 1 <br /> Site 300 <br /> boundary 1 <br /> � 1 <br /> o <br /> i U <br /> z <br /> 1 {f <br /> 0 600 <br /> Scale : feet A <br /> l' >I <br /> o <br /> Ali <br /> /r <br /> Extent of TCE <br /> �e .� / after 3 years of <br /> Sewage _�Y ''_ remediation (1994) <br /> Treatment Pond �r / <br /> wEta Water-supply well <br /> Cg6 CON-1 <br /> CpRRgL o�tio <br /> Water-supply well <br /> CDF-1 <br /> ERD-GSA-PP-0007] <br /> Figure 7. Reduction in extent of TCE in shallow ground water at concentrations above <br /> drinking water standards (5 ppb)since initiation of ground water remediation. <br /> 8 <br />