Connect SoCal 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.

The PEIR for the adopted 2020-2045 RTP/SCS, referred to as Connect SoCal 2020, is SCAG’s latest certified PEIR. The Final Connect SoCal 2020 PEIR (SCH#2019011061) was certified on May 7, 2020 by the Regional Council. Click here to download or learn more about the Connect SoCal 2020 PEIR and subsequent addenda. For information on previously certified PEIRs click here.

Preparing the Connect SoCal 2024 PEIR

SCAG is currently preparing a PEIR for the upcoming RTP/SCS, referred to as Connect SoCal 2024. Similar to previous PEIRs, the Connect SoCal 2024 PEIR (2024 PEIR) will conduct a regional-wide assessment and disclose potential impacts of Connect SoCal 2024 on the environment. The 2024 PEIR will also consider program-wide mitigation measures and broad policy alternatives. The Connect SoCal 2024 Draft PEIR is expected to be available for public review Fall 2023. 


For more information on Connect SoCal PEIRs, please contact Ms. Karen Calderon at

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 October 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:

Nov. 9 and 10, 2022 Scoping Meeting Agenda