Rupture History of the San Andreas Fault in the Carrizo Plain prior to 1300 A.D.
It is important to determine variability in time between earthquakes to constrain uncertainty in probabilistic calculations of rupture potential. Results from our field work since 2005 at the Bidart site in the Carrizo Plain and new radiocarbon dates from archival samples collected for Grant’s 1993 dissertation reveal evidence of six ruptures of the San Andreas fault (SAF) between 1345 and 1857 AD.
Grant Ludwig, L. and Akciz, S., 2012, Rupture History of the San Andreas Fault in the Carrizo Plain prior to 1300 A.D., Final Technical Report, U.S. Geological Survey National Earthquake Hazard Reduction Program Award No. G10AP00073.
EIS Timeline - Feb 2019
- Public scoping period and scoping meetings
[5 meetings between Mar-Jun 2016; comment period extended from 60 days to 120 days, closed Jul 18, 2016 ]
- Compile and review existing data
- Prepare project description and identify project alternatives
We Are HereValidate Baseline Information; analyze environmental effects
Prepare Draft EIS
- Federal Register Notice of Availability of Draft EIS
- 90-day public review and comment period, with public meetings
- Respond to public comments and prepare Final EIS
- Federal Register Notice of Availability of Final EIS and Draft ROD
- 45-day Public Objection Period
- Resolve objections to Final EIS and draft ROD
- Issue Final Record of Decision