SCAG Program Environmental Impact Report


In accordance with the California Environmental Quality Act (CEQA), the Southern California Association of Governments (SCAG), as Lead Agency, prepares a Program Environmental Impact Report (PEIR) for the Regional Transportation Plan/Sustainable Communities Strategy (RTP/SCS), which is updated every four years.

The program level environmental impact report conducts a regional-wide assessment and discloses potential impacts of the RTP/SCS on the environment at a regional level. The PEIR also considers program-wide mitigation measures and broad policy alternatives. The PEIR provides a foundation for subsequent, project-specific environmental reviews that may be conducted by local implementation agencies serving as CEQA lead agencies for later projects with narrower scope.

Connect SoCal 2024 Draft PEIR and Notice of Availability

SCAG, as the Lead Agency pursuant to CEQA, has prepared a Draft Program Environmental Impact Report (2024 Draft PEIR) (State Clearinghouse No.: 2022100337) for the proposed 2024-2050 Regional Transportation Plan and Sustainable Communities Strategy (RTP/SCS), also referred to as “Connect SoCal 2024”, “2024 RTP/SCS”, “Plan”, or “Project”. The Draft 2024 PEIR serves as a programmatic document that presents a region‐wide assessment of potential environmental effects of Connect SoCal 2024.   

On Nov. 9, 2023, SCAG published a Notice of Availability (NOA) of a Draft PEIR for Connect SoCal 2024. The NOA notified interested agencies, organizations, and individuals of the public release of the Connect SoCal 2024 Draft PEIR. SCAG is providing a 65-day CEQA public review and comment period beginning Nov. 9, 2023. The public comment and review period closed Jan. 12, 2024.

For additional information, please review the NOA below. 

The Connect SoCal 2024 Draft PEIR is available for download by chapter or as one file. Please note that due to the large file size of the complete report, we strongly recommend that you download it onto your computer before opening the file. All files are in the PDF format. 

General Disclaimer

The posted files are compliant with California Government Code Section 11546.7, which requires website accessibility for individuals who require assistive technologies.  The files are compatible with screen reading software to provide an auditory format, where feasible, given the type of information presented (e.g., some figures, tables, and other highly graphic information may not be translated to an auditory format).  

The Appendices to the 2024 Draft PEIR contain supporting technical information and reports referenced in the PEIR. These appendices contain highly detailed figures and other graphic information which are difficult to translate for screen reading software; therefore, the Appendices have not been translated into an auditory format. 

If you have a disability and/or have difficulty accessing any material, including the Appendices in the 2024 Draft PEIR, please contact us by mail, email, or telephone, and we will work with you to make all reasonable accommodations. Please indicate 1) the nature of the accessibility needs; 2) your preferred format; 3) the material you are trying to access and its location within this document; and 4) how to reach you if questions arise while fulfilling your request. You can direct your requests to: 

Southern California Association of Governments 
900 Wilshire Blvd., Ste. 1700 
Los Angeles, CA 90017 
Phone (Toll Free): (800) 735-2922 
Phone (Local): (213) 236-1800 
TTY: (800) 735-2929 

Connect SoCal 2024 Draft PEIR Downloads

Individual Sections

For more information on SCAG PEIRs or to request hard copies of documents or public notices, please contact Ms. Karen Calderon at

Previously Conducted Noticing and Public Meetings

Notice of Preparation and Scoping Meetings

On Oct. 17, 2022, SCAG released a Notice of Preparation (NOP) of a Draft PEIR for Connect SoCal 2024. The NOP formally initiated the CEQA process and notified interested agencies, organizations, and individuals of the preparation of the PEIR. Release of the NOP also initiated a required 30-day public review and comment period which began on Oct. 17, 2022 and ended on Nov. 16, 2022 at 5 p.m. (PST) to seek input from interested parties on the scope and content of the Connect SoCal 2024 Draft PEIR. NOP of the Draft PEIR for Connect SoCal 2024 is published below.

Notice of a Preparation of a Draft PEIR for Connect SoCal 2024 (published on Oct. 17, 2022)

During the 30-day public review, SCAG hosted two virtual public scoping meetings for the NOP, each providing the same content, to receive verbal comments. The agenda and presentation for the scoping meetings are available here: