Are there earthquake faults in the study area that would preclude the construction of a tunnel?
As part of the study, an extensive geotechnical investigation was undertaken to identify geologic conditions that would have to be addressed for all the build alternatives. Fault zones were identified and evaluated. All build alternatives proposed take into consideration seismic activity and the tunnel options each take into consideration the possibility of a maximum probable seismic event for the given fault. Earthquake faults and other geotechnical information can be found in the Geotechnical Information report which explored seismic design criteria for the proposed alternatives. Unlike most reports contained in the PR/ED which cannot be released, Caltrans has authorized release of the Geotechnical report. An Executive Summary of Volume 1 and Volume 2 of the Final Preliminary Engineering Geotechnical Investigation report can be viewed under the Project Documents section of the City’s Understanding Prop H web site. A full copy of the 500 plus page report is available on CD by contacti
