FERC Issues Comments on Anderson Dam Tunnel Project's Monthly Construction Reports

Strategic Insights -

The Federal Energy Regulatory Commission (FERC) has issued comments on the monthly construction reports submitted by the Santa Clara Valley Water District for the Anderson Dam Tunnel Project (ADTP). The comments, dated June 23, 2025, address various non-conformance reports (NCRs) and other issues raised in the reports. The FERC has requested that the district provide justifications for using certain materials or references for future decisions, as well as explanations for discrepancies in concrete sample strengths and daily inspection reports.

Key Takeaways:

  • FERC has reviewed the monthly construction reports submitted by the Santa Clara Valley Water District for the Anderson Dam Tunnel Project from February 2024 to December 2024.
  • The commission identified three primary areas of concern: the lack of explanations for using certain materials, discrepancies in concrete sample strengths, and incomplete information in daily inspection reports.
  • The FERC has asked the district to provide justifications for using "Use As-Is" decisions for certain NCRs, as well as references for future decisions.
  • The district was also asked to provide reasons why non-conformance results in Appendix H of the December 2024 Construction Report were not included in the Non-Conformance Report.
  • The FERC has requested details for a Request for Information (RFI) related to the PVC membrane in the December 2024 Daily Inspection Report.
  • The district has 30 days to address FERC's comments and provide a plan and schedule to address the issues raised.

Statistics:

  • The FERC reviewed 11 monthly construction reports submitted by the Santa Clara Valley Water District for the Anderson Dam Tunnel Project from February 2024 to December 2024.
  • The commission identified 3 primary areas of concern in the reports.
  • The FERC has asked the district to provide justifications for 5 instances of "Use As-Is" decisions in the NCRs.
  • 1 RFI request was identified in the December 2024 Daily Inspection Report.

Sources:

  • FERC. (2025, June 23). General Correspondence: FEDERAL ENERGY REGULATORY COMMISSION Office of Energy Projects Division of Dam Safety and Inspections - San Francisco Regional Office.
  • FERC. (2025, June 23). Document Accession #: 20250623-3032 Filed Date: 06/23/2025.