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8. Item 15. Specific Comments: EPA's comment "Please explain the anomalous <br /> groundwater depression in the vicinity of well LM059A (Figure A-8 in <br /> Appendix A) " was not addressed in the Report and the Figure A-8 was not <br /> modified. <br /> 9. Item 16. Specific Comments: EPA's comment "Please explain the anomalous <br /> groundwater mounding in the vicinity of well LM067B (Figure A-11 in <br /> Appendix A)" was not addressed in the Report and the Figure A-11 was not <br /> modified. <br /> 10. Item 17. Specific Comments: EPA requested that the portions of the 1995 <br /> data set that passed the QA/QC screening be included in the trend <br /> analysis. However, the Report was not revised to include the usable <br /> portions of the1995 data set in the trend analysis. <br /> 11. Item 18. Specific Comments: EPA's original concern was regarding a <br /> potential source for the increasing chloroform concentrations detected <br /> at PW003. The RRTC stated that "Chloroform concentrations at PW003 will <br /> continue to be monitored in 2000." As commented on previously by the <br /> EPA, it is unknown in which horizon PW003 is screened (Table 2.5-1) and <br /> what the flow direction is in this horizon. This issue was not clarified <br /> in the Report to eliminate the possibility that DDJC-Tracy is the source <br /> for the increased chloroform concentrations. <br /> 12. Item 19. Specific Comments: EPA requested that, since a legend was added <br /> to Figures H-1 and H-2 indicating that no capture zones could be <br /> identified, the reasons (as provided in the RRTC) for why no capture <br /> zones could be identified also be added to the legend. However, the <br /> figure legends were not expanded to include the reasons for why no <br /> capture zones could be identified. <br /> Please feel free to contact me at 415-744-2392 if you have any questions <br /> or comments. <br /> Sincerely, <br /> a C� <br /> Michael Work <br /> Federal Facilities Cleanup Office <br /> Superfund Division (SFD-8-3) <br /> cc: (See Distribution List) <br /> 3 <br />