2022 Engineering Evaluation/Cost Analysis Addendum

The Draft EE/CA Report Addendum supplements the EE/CA Report completed in 2021 and addresses data gaps identified in the original report. Field investigations to support the EE/CA Addendum were completed in November 2021 and January 2022. These investigations included subsurface soil and groundwater sampling, sampling of suspected lead-based paint and asbestos containing materials, excavation to identify an underground storage tank and a mass of concrete (previously unknown buried anomaly), well closure and background/reference soil sampling. All samples were analyzed by an accredited laboratory. The recommendations in the Draft EE/CA Report Addendum are in addition to and are not intended to replace the recommendations in the 2021 EE/CA Report.
Comment Period: Closed        Sep 13, 2022 - Oct 12, 2022
Document Content:
2022 EECA Addendum Figures.pdf2022 EECA Addendum Figures.pdf   (2.5 MB, PDF file)
2022 EECA Addendum Tables.pdf2022 EECA Addendum Tables.pdf   (1.4 MB, PDF file)
2022 Risk Assessment Workplan.pdf2022 Risk Assessment Workplan.pdf   (880.6 KB, PDF file)
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