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78. Section 7.3.2.3.2 <br /> It is not correct to state that at the end of remediation there will be "no risk" <br /> Corrective Action: Modify the text to state that at the end of remediation risks will <br /> be reduced to acceptable levels (i.e., to the range stated in the NCP). <br /> 79. Section 7.3.2.3.2 <br /> The statement that "if remediation is to be terminated before all cleanup standards <br /> are met . . ." does not belong in this ROD. There is no reason to believe that this <br /> action will be terminated at that point. <br /> Corrective Action: Delete this sentence. <br /> 80. Section 7.3.2.6 <br /> The statement that "required permits are obtainable" is not relevant to this CERCLA <br /> remedial action, since permits are not required. <br /> Corrective Action: Modify this sentence to read that the intent of the 5 year review <br /> is to evaluate the protectiveness of the remedial action. <br /> 81. Section 7.3.2.7 <br /> It is not clear whether the cost estimate includes costs for monitoring the influent <br /> and effluent of the treatment system in order to assure that none of the potential <br /> contaminants will be returned to the aquifer. <br /> Corrective Action: Explain in the text how monitoring of the system's influent and <br /> effluent are included or explain why they are excluded. <br /> 82. Section 7.3.2.9 <br /> The text states that "this alternative is expected to achieve full aquifer cleanup . . . <br /> however, this is not the objective of this remedial action. <br /> Corrective Action: Revise the text to say that this alternative is expected to reduce <br /> concentrations of TCE, PCE and DCE in the aquifer to levels within the acceptable <br /> risk range of 1x10' to 1x10"e. <br /> 83. Section 7.4.1.1 <br /> The fifth bullet in this section states "consideration is also being given to <br /> discharging treated effluent to surface impoundments . . .". However, this discharge <br /> mechanism is a part of the alternative and not merely a consideration. <br /> EPA/R9 June 7, 1993 19/40 <br />