Tsunami Risk

• San Onofre sits within a tsunami zone. See Tsunami Inundation Map below.
• The California Coastal Commission (CCC) considers tsunami risks when issuing coastal development permits. See April 2011 CCC’s report The Tohoku Tsunami of March 11, 2011: A Preliminary Report on Effects to the California Coast and Planning Implications.  This report was not available at the time the San Onofre permit was issued.
• The Nuclear Regulator Commission does not require tsunami studies for license renewal. San Onofre was originally licensed to shut down in 2013, but was extended to 2022. The plant was designed in 1973 for a 40 year lifespan.
• San Onofre’s tsunami wall is only 14 feet above high tide.
  

  Tsunami wall only 14′ high

Birds Eye View Photos of San Onofre

Paleoseismic features show tsunami evidence at elevation 328+ feet above current sea level in North San Diego County

Tsunami inundation map with references – CA Dept. of Conservation