Laserfiche WebLink
s <br /> 0 • <br /> final work plan before the final. Additionally, the revised work plan <br /> should reference, if appropriate, the technical protocol for evaluating <br /> the effectiveness of natural attenuation (e.g. , AFCEE "Technical <br /> Protocol for Implementing Intrinsic Remediation with Long-Term <br /> Monitoring for Natural Attenuation of Fuel Contamination Dissolved in <br /> Groundwater") . <br /> 2. Appendix B, Table B-2, Proposed New Wells <br /> The Final Site-Wide Comprehensive ROD, Table 9-2, and the Draft Final <br /> Remedial Design Work Plan, Table 3-3, specify new monitoring wells LM150 <br /> through LM165 for performance monitoring of OU-1. Please explain why <br /> wells LM150 though LM152 and LM164 are excluded from Table B-2 and thus <br /> not proposed for installation and sampling in 1999. <br /> Additional extraction and monitoring wells are proposed in the 1998 <br /> Annual Monitoring Report and the Remedial Design Work Plan which are not <br /> included in the Table B-2. Specifically, the following wells are not <br /> included in Table B-2: <br /> * Per Section 6.5.2 of the Annual Monitoring Report, six extraction <br /> wells are to be installed at SWMU 3 and two extraction wells are <br /> to be installed at SWMU 8. <br /> * Per Section 6.5.3 of the Annual Monitoring Report, 13 monitoring <br /> wells are to be installed east of the Annex property, but only ten <br /> new wells are listed in Table B-2 (LM153 through LM161, and <br /> LM163) . <br /> * Per Section 6.5.4 of the Annual Monitoring Report, six to seven <br /> monitoring wells are to be installed for UST 6 and UST27. <br /> * Per Section 6.5.5 of the Annual Monitoring Report, one new <br /> monitoring well is to be installed near AG-2. <br /> * Per Table 3-10 of the Remedial Design Work Plan, eight extraction <br /> wells may be installed at SWMUs 2/3, SWMU 8, the Annex, and the <br /> northwest corner of the Depot. <br /> Please modify Table B-2 to include all wells planned for installation in <br /> 1999, including the 1999 sampling frequency and sampling frequency <br /> rationale. <br /> 3. Section 3.1.1, Sample Numbers, page 3; and Appendix A, Analytical Matrix <br /> Tables <br /> Per Section 3.1.1, 115 wells are to be sampled and analyzed in 1Q99 at <br /> DDJC-Tracy. However, Appendix A, "Sampling and Analysis Matrix (1Q99) " <br /> appears to show only 83 wells will be sampled during 1Q99. Please <br /> revise Section 3.1.1 or Appendix A to be consistent. <br /> 2 <br />