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 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.

Getting Ready for the Connect SoCal 2024 PEIR

SCAG is getting ready to prepare 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.

Notice of Preparation and Scoping Meetings

SCAG has released a Notice of Preparation (NOP) of a Draft PEIR for Connect SoCal 2024. The NOP formally initiates the CEQA process and is intended to notify interested agencies, organizations, and individuals of the preparation of the PEIR. Release of the NOP initiates a required 30-day public review and comment period which begins on Oct. 17, 2022 and ends 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)

Please send your comments on the NOP before Nov. 16, 2022 at 5 p.m. (PST) to Ms. Karen Calderon, Senior Regional Planner, either electronically to: or by standard mail to Southern California Association of Governments, 900 Wilshire Boulevard, Suite 1700, Los Angeles CA 90017.

SCAG will be hosting two virtual public scoping meetings for the NOP, each providing the same content, to receive verbal comments. Information for the scoping meetings is as follows:

Scoping Meeting #1
Date: Wednesday, Nov. 9
Time: 6 – 8 p.m. PST
Add to Calendar

Scoping Meeting #2
Date: Thursday, Nov. 10
Time: 10 a.m. – noon PST
Add to Calendar

Join on Zoom:
Dial by location: +1 669 900 6833 US Toll or +1 669 444 9171 US Toll
Meeting ID: 810 2328 7939

Scoping Meeting Agenda
Scoping Meeting Slides

In accordance with the Americans with Disabilities Act and Language Accessibility, SCAG is committed to providing reasonable accommodations to those who are interested in participating in the scoping meetings. SCAG is committed to helping those with disability and/or with limited proficiency in the English language by providing accommodation and/or translation services at the scoping meeting in accordance with Title VI of the Civil Rights Act.

Participants in need of translation services or special accommodations at a scoping meeting due to disabilities, please contact Karen Calderon at (213) 236-1983, or email at least 72 hours prior to your attendance.

說明會參加者若在說明會議中需要翻譯服務或因殘疾需要特殊幫助, 請在參加說明會開始前的72小時內聯繫 Karen Calderon (213) 236-1983 或電子郵件寄至

Para solicitar un intérprete de idiomas o para acomodar a personas con discapacidades en la reunión de ambitos, sírvase comunicarse con Karen Calderon al (213) 236-1983 o al menos de 72 horas antes de la reunión.

전문가 회의에 오시는 분들 중 한국어통역이 필요하신 분이나 장애로 인해 특별한 편의가 필요하신 분은 Karen Calderon 에게 회의 시작 최소한72시간 이전에 문의 하시기 바랍니다. 문의전화: (213) 236-1983, 이메일 주소:

Xin vui lòng liên lạc Karen Calderon ở xố điện thoại (213) 236-1983 hay 72 tiếng trước buổi họp nếu quý vị cần sự giúp đỡ về thông dịch hoặc khuyết tật.

What will the Connect SoCal 2024 PEIR analyze?

The 2024 PEIR will conduct a region-wide analysis of the potential effects of Connect SoCal on the environment. Although Connect SoCal 2024 will include many transportation projects, the 2024 PEIR will not specifically analyze environmental effects of any individual transportation or land use development project. Project-level environmental analyses will be conducted and prepared by implementing agencies serving as CEQA lead agencies on a project-by-project basis as individual projects proceed through the design, development, and decision-making process.

The potential content of environmental effects that warrant analysis in the Connect SoCal 2024 PEIR are as follows:

  • Aesthetics
  • Agricultural and Forestry Resources
  • Air Quality
  • Biological Resources
  • Cultural Resources
  • Energy
  • Geology and Soils
  • Greenhouse Gas Emissions
  • Hazards and Hazardous Materials
  • Hydrology and Water Quality
  • Land Use and Planning
  • Mineral Resources
  • Noise
  • Population and Housing
  • Public Services
  • Recreation
  • Transportation
  • Tribal Cultural Resources
  • Utilities and Service Systems
  • Wildfire


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