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.pdf   (2.5 MB, PDF file)
2022 EECA Addendum Tables.pdf   (1.4 MB, PDF file)
2022 Risk Assessment Workplan.pdf   (880.6 KB, PDF file)
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