- Board Report: Initial Operating Segments (Fall 2019)
- Board Report: Updated Project Definition (Winter 2018)
- Revised and Recirculated Notice of Preparation (Summer 2018)
- Final Northern Alignments Updated Screening Report (Spring 2018)
- Notice of Preparation - Draft EIS/EIR Report (Spring 2017)
- Notice of Preparation - Extended Comment Period (Summer 2017)
- Notice of Intent – Draft EIS (Spring 2017)
- Northern Alignment Options – Executive Summary (April 2017)
- Northern Alignment Options – Full Report (April 2017)
- Technical Refinement Study (July 2015)
- SCAG Alternatives Analysis (June 2012)