Ocean Beach Climate Change Adaption Project
Overview
Thank You for Joining Our April 20th Webinar!On April 20, 2022 the San Francisco Public Utilities Commission, San Francisco Municipal Transportation Agency, and Recreation & Park Department hosted a multi-agency, virtual community webinar to share status updates on the City’s Ocean Beach Climate Change Adaptation Project, as well as other projects on the westside of San Francisco. |
This project will comprise concepts developed through the 2012 Ocean Beach Master Plan (Master Plan) and follow on documents including the Coastal Protection Measures and Management Strategy for South Ocean Beach (2015) and the Ocean Beach Open Space Landscape Design (2017). Project elements include managed retreat, structural protection, access and recreation improvements, and beach nourishment through the placement of sand. In addition, this project will remove existing shoreline armoring placed during large storms by the City and County of San Francisco (the city) to protect the Great Highway and critical San Francisco Public Utilities Commission (SFPUC) wastewater infrastructure. On behalf of the City, the SFPUC is leading the efforts to implement two of the six key moves identified in the Master Plan (see below) that focus on chronic shoreline erosion at Ocean Beach between Sloat Boulevard and Fort Funston. These two key moves make up the elements of the San Francisco Ocean Beach Climate Change Adaptation Project (Project). For more information on other projects in the area, please visit the sfplanning.org/ocean-beach.
-
Project Background
This work is necessary to address climate induced sea level rise, removal of shoreline armoring, improvements to public access and recreation, and to protect the integrity of wastewater assets built in response to the Clean Water Act. The wastewater assets, built to protect public health and the environment, include the Lake Merced Tunnel, the Westside Pump Station, and the Oceanside Treatment Plant. There are several city, state, and federal agencies working on various efforts at Ocean Beach to adapt to climate change and coastal erosion.
The Project is being implemented in three sequential sub-phases: 1) Short-term Improvements, 2) Army Corps of Engineers (Corps) Ocean Beach Storm Damage Reduction and Beach Nourishment, and 3) Long-term Improvements. A key component of the Long-term Improvements phase will require on-going, managed beach nourishment via sand placement. As part of this Project, the Corps Beach Nourishment represents one of the potential sand sources needed for the long-term management of the area.
In the 1980’s and 1990’s, in response to the Clean Water Act, the SFPUC built the Oceanside Treatment Plant and associated wastewater infrastructure to protect coastal water quality from pollution and protect public health. Portions of these facilities were built under the Great Highway.
Starting in the late 1990’s the coastal area south of Sloat Boulevard began experiencing chronic climate induced erosion which threatened the Great Highway and the most seaward component of the SFPUC’s wastewater infrastructure – the Lake Merced Tunnel, a fourteen-foot diameter wastewater conveyance tunnel.
In support of a comprehensive solution to the erosion problem, the SFPUC actively participated in the development of the 2012 Master Plan, an inter-agency effort led by SPUR to develop a sustainable long-term vision for all of Ocean Beach. The Master Plan presents 6 key moves that are organized by geographical reaches and designed to be implemented incrementally over a period of decades. This Project focuses on South Ocean Beach and includes two of the six key moves.
- Removal of the Great Highway between Sloat and Skyline Boulevard.
- The introduction of a multipurpose coastal protection/restoration/access system.
-
Short Term and Long Term Phases
Short-Term Improvements Phase
The Short-Term Improvements Phase provides interim protection and improved beach access while the Long-term Improvements Phase is under development. The Short-term Improvements Phase involves beach nourishment activities (e.g. sand backpassing) and installation of sandbags along the southern portion of Ocean Beach fronting the Great Highway. This work is a critical environmentally-friendly approach that is protecting public infrastructure and improving beach access while the Long-term Improvements Phase undergoes environmental review, completes design, and is ready for implementation. Potential annual sand replenishment activities in this Phase are informed by annual monitoring efforts required by CCSF’s Coastal Development Permit. As such, no sand backpass efforts took place during the 20/21 winter.
Status of Short-term Work
- Since 2015, as part of this phase, over 213,000 cubic yards of sand have been transported from the northern portion of Ocean Beach where sand is plentiful to the area south of Sloat Boulevard most susceptible to wave-driven erosion.
- The SFPUC performs annual monitoring to comply with permit requirements and utilizes the data to determine if sand placement and/or sandbag work is necessary to protect critical infrastructure.
United States Army Corps of Engineers Beach Nourishment Phase
The ACOE Beach Nourishment Phase involved designing and implementing activities that moved dredged sand from the San Francisco Bay Main Ship Channel (approximately 260,000 cubic yards) that is currently placed offshore to Ocean Beach south of Sloat Boulevard. This work beneficially used the dredged sand to minimize storm damage and protect the beach, infrastructure, habitat, and recreational access to the beach. Implemented in partnership with the ACOE, this Phase works in conjunction with both the Short and Long-term Improvements Phases to protect South Ocean Beach. Design and environmental review for the ACOE Beach Nourishment Phase was completed and can be accessed here; and construction was completed in summer 2021.
Long-Term Improvements Phase
The Long-term Improvements Phase is the result of extensive planning and analysis work, (e.g., Ocean Beach Master Plan and Coastal Protection Measures and Management Strategy) which is captured in the completed Alternatives Analysis Report and the Conceptual Engineering Report. This phase of work is expected to involve the implementation of coastal management strategies that include managed retreat (i.e., recontouring the bluffs and removing the Great Highway between Sloat and Highway 35), removal of rubble and revetment rock from the beach and bluffs, continued beach nourishment, and installation of a low-profile (buried) wall to protect the Lake Merced Tunnel and associated assets. This work will not only protect vital public wastewater infrastructure, but will also improve access, recreation, and habitat at South Ocean Beach. The Long-term Improvements Phase is currently in the design and environmental review phase (the Notice of Preparation can be viewed here). The Draft Environmental Impact Report was released on December 8, 2021. The Final EIR is in development and is expected to be published in early 2023. Construction is expected to begin in late 2023 and last for 4 years.
Status of Long-term Work
- An Engineering Contract received Notice of Contract Award on September 27, 2018.
- The Conceptual Engineering Report was completed on September 30, 2019.
- 35% Design was completed in October 2020.
- 65% Design was completed in October 2021.
- 95% Design is in progress.
- An Environmental Consultant Contract received Notice of Contract Award on August 18, 2018.
- A virtual public scoping meeting was held in September 2020 to request input on the environmental considerations of the Long-term Improvements Environmental Impact Report. The Notice of Preparation, the full scoping meeting presentation, and details for the virtual public scoping meeting can be found here.
- The Draft Environmental Impact Report was released in December 2021 and a public hearing at the Planning Commission took place in January 2022. See this link for updates: sfplanning.org/sfceqadocs.
- The Ocean Beach Long-Term Improvements Phase is expected to begin construction in late 2023 and last for 4 years.
-
Project Materials
