The California Coastal Commission has put forth a draft Sea-Level Rise (SLR) Policy Guidance in an effort to address the important issue of sea level rise. The California Coastal Commission defines SLR as “…a local increase in the level of the ocean relative to the land, which might be due to ocean rise and/or land level subsidence.” In general terms, sea-level rise is the rising of the ocean level due to any number of causes, including the melting of the ice sheath. This guidance provides recommended steps for addressing sea-level rise in coastal planning and regulatory actions, which will affect how projects next to the coast are reviewed in the future.
The guidelines proposed in the Coastal Commission’s document are just that–guidelines. No regulation is being proposed at this time, though this may change as conditions along the coast change and as new science becomes available. These guidelines have been designed to complement existing Coastal Commission regulations. The guidelines are based on the National Research Council’s (NRC) 2012 projections for sea level rise.
What jurisdictions have implemented SLR projections?
Several jurisdictions within the area are already considering SLR when reviewing projects within the Coastal Zone. In a December 2013 letter to an applicant, Kent Edler, County Senior Engineer, indicated that Santa Cruz County has chosen a “mid-range” sea-level rise projection of 41.6-inches. This level falls within the middle of the Coastal Commission’s 17”-66” sea-level rise range for the coastal areas of California. While the County regulations have not yet changed, they are taking sea-level rise into consideration when reviewing current coastal projects. Per Mr. Edler, the County is currently working on revisions to the Geologic Hazards section of the County Code, but that revisions are not yet ready to be shared with the public.
The City of Santa Cruz recently adopted 2012 Climate Adaptation Plan incorporates some aspects of the Coastal Commission’s SLR guidelines. A copy of the Climate Adaptation Plan can be found here. City Senior Planner, Michelle King, states that the City will also be looking to the SLR guidelines when they update their Local Coastal Program (LCP).
How may these policy guidelines affect your coastal project?
General situations when Sea-Level Rise Analysis should be considered—if the project or planning site is:
• Currently in or adjacent to an identified floodplain
• Currently or has been exposed to flooding from waves
• Currently in a location protected from flooding by constructed dikes, levees, bulkheads, etc.
• On or close to a beach, estuary, lagoon, or wetland
• On a coastal bluff with historic evidence of erosion
• Reliant upon shallow wells for water supply
Each project will be evaluated on a case by case basis. For example, a project within the Coastal Zone Bonny Doon area would likely not be required to account for sea level rise, while a project along Beach Drive in Aptos would. Various components, such as the projected life of the project, projected rate of erosion, presence of wave action, geologic stability, etc would contribute to whether or not sea level rise should be part of the analysis for the project. More information on how sea level rise analysis may be triggered can be found in Appendix B of the Draft SLR Policy Guidance document or by clicking here. Calculations for SLR can also be found in this section.
What if your project is within a jurisdiction that does not have an updated LCP to include a discussion of sea level rise?
The project can be evaluated by the regulations of the existing LCP; however, should the project be brought before the California Coastal Commission, they may decide that a SLR analysis needs to be undertaken.
Updates to the Santa Cruz County General Plan and County Code are underway. According to Kent Edler, Environmental Planner with the County of Santa Cruz, the County is “currently in the process of updating our Safety Element and Geologic hazards ordinance and the issue of sea level rise and coastal bluffs will need to be addressed in the County’s regulations, which need to be approved by the Coastal Commission. We expect to hold a stakeholder meeting to discuss revisions of our regulations sometime during early 2014, at which time we will send out a notification”; however, no meeting has yet been scheduled.
As for the Coastal Commission, per Hilary Papendick (Statewide LCP Grant Manager and Coastal Program Analyst for the California Coastal Commission), “the CCC [sic] sea level rise team is currently working on compiling comments and updating the draft. Our tentative schedule is to release a final draft for public review in April and to take it to the Commission in May.”
Should you like to review the draft document, a copy of which can be found here. Our office will be keeping up-to-date on all any new developments. Please feel free to contact our office with any questions or concerns you may have.