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Environmental Impact/Permitting – Final EIR

The Clean Water Program will have a positive impact on our environment by preventing raw sewage from overflowing into San Francisco Bay. As with most infrastructure improvements, there are some temporary nuisance impacts during construction and changes associated with building new facilities. The City conducted an environmental review of the Clean Water Program that addressed potential impacts under the California Environmental Quality act (CEQA) via a Programmatic Environmental Impact Report, that was approved by City Council in June 2016.

As design has progressed, the City continues to review project elements to ensure compliance with CEQA. As part of this review, the City prepared an Environmental Impact Report for the Underground Flow Equalization System Project (formerly called the In-System Storage Facility). Below is information pertaining to the CEQA documentation the City has prepared on behalf of the Program.

Underground Flow Equalization System Project Final Environmental Impact Report

The City prepared the Final Environmental Impact Report (Final EIR) to review the potential environmental impacts associated with the Underground Flow Equalization System Project (UFES Project). Comments received during the public review and comment period of the Draft EIR were considered in the preparation of the Final EIR, and written responses to comments are included in the document. The Notice of Availability of the Draft EIR was issued on March 6, 2019, and the public review and comment period ran from March 6, 2019 through May 31, 2019. Prior to preparing the Draft EIR, the City conducted a 40-day public scoping effort to solicit comments on the scope of the EIR. The Notice of Preparation was issued on September 7, 2018, and the scoping period ran from September 10, 2018 through October 22, 2018. A copy of the notice can be downloaded here. More information about the UFES Project can be found here.

The Final EIR was adopted by the San Mateo City Council at its October 21, 2019 meeting. A Notice of Availability was issued on September 6 and can be downloaded here.

A digital copy of the Final EIR is available for download at the links provided below. Hard copies are available for viewing at the following locations:

  • City Hall, 330 West 20th Avenue
  • San Mateo Main Library, 55 West 3rd Avenue

Download the entire Final EIR, just the main text, or just the technical appendices at the links provided below:

Final EIR Full Document (47MB pdf file, reduced resolution)
Final EIR Main Text (38MB pdf file, full resolution)
Technical Appendices (80MB pdf file, full resolution)
Final EIR Errata No. 1 (13MB pdf file)
Final EIR Errata No. 2 (1MB pdf file)
Mitigation Monitoring and Reporting Program (1MB pdf file)