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I <br /> „ November 30, 1995 - <br /> Page 5 <br /> Figures 4 - 9 were revised to provide greater delineation of subsurface hydrocarbon <br /> concentrations <br /> Remediation Design Conclusions _ <br /> r � <br /> PHS/EHD disagrees with the screening process utilized as presented in Table 2 <br /> Revised Table 2 so that only remedial technologies were incjuded <br /> 5.3.3 Alternative 2: SVEIBioventing ' <br /> Once the effectiveness of the proposed SVE is demonstrated though soil sampling and <br /> residual soil contamination evaluation, PHS/EHD will evaluate the termination of the <br /> SVE system The plan stated that a statistical method, American Petroleum Institute, <br /> Technological Limits of Groundwater Remediation A_Statistical Evaluation Method. <br /> would he used to`determine asymptotic conditions Please provide rationale why a <br /> groundwater method would be used for soil remediation evaluation <br /> The purpose of utilizing this method to determine asymptotic conditions is that it may be <br /> applied to both remedial technologies A copy of this method 1s presented as <br /> Appendix-B <br /> 5.4 Alternative Evaluation <br /> It is interesting to note that alternative 2, SYE/bioventing was selected because it would <br /> have'a greater effect on groundwater remediation, yet no groundwater remediation was <br /> specifically proposed <br /> Groundwater remediation 1s proposed in Sections 5 3 and 5 4 of the amended CAP <br /> 1 ' <br /> r ' <br /> I <br /> � , 1 <br /> ' 4 <br /> i <br /> 31013371ACAPRESP _ <br /> i <br />