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vVLTC <br /> A S S O C I A T E S I N C <br /> 6.4 RECOMMENDATIONS <br /> Based on the results of this investigation, current regulatory guidelines, and the judgement of <br /> ATC, the following recommendations are presented for consideration: <br /> The extent of groundwater impacted with chromium VI can be further defined by additional <br /> groundwater well installation, especially in the vicinity of Vaults 7 and 8 where <br /> concentrations of chromium VI are reportedly highest. Two new monitoring wells are <br /> recommended, one north of MW-3 and one east of MW-3. <br /> • Upon concurrence from the RWQCB, ATC will submit a workplan for the monitoring well <br /> installation. <br /> �i <br /> t <br /> ► : <br /> r , <br /> r-, <br /> � i <br /> F . <br /> li <br /> wAwordpro1625831rcports\Subsurf report.doc <br />