Transportation Conformity Working Group - 2016-2015
The Transportation Conformity Working Group (TCWG) is a regional forum for interagency consultation and coordination to maintain transportation conformity and improve air quality in Southern California.
The TCWG meets monthly to facilitate inclusive transportation and air quality planning processes and to fulfill the interagency consultation requirements of Federal Transportation Conformity Regulations. The group helps resolve regional issues pertaining to transportation conformity and coordinates with the Statewide Transportation Conformity Working Group.
Membership of the TCWG includes federal (U.S. Environmental Protection Agency, Federal Highway Administration, Federal Transit Administration), state (California Air Resources Board, Caltrans), regional (air quality management districts, SCAG), and subregional (county transportation commissions) agencies and other stakeholders.
Staff Contact
Lijin Sun
(213) 236-1804
sunl@scag.ca.gov
California State Budget Reduces Barriers to Housing Production and Extends Deadline for Regional Early Action Planning (REAP 2.0) Program
Earlier this week, the governor signed the 2025-2026 state budget, which includes a suite of reforms to reduce barriers to housing production.
Connect SoCal 2024 Implementation Update: Sustainable Communities Strategy Accepted
On May 7, the California Air Resources Board (CARB) informed SCAG that it had accepted SCAG’s determination that the Connect SoCal 2024 Regional Transportation Plan/Sustainable Communities Strategy (RTP/SCS) meets CARB’s greenhouse gas (GHG) emission reduction targets.
General Assembly Elects 2025-26 Board Officers
The General Assembly voted to approve the nominations for the SCAG 2025-26 Regional Council officers as recommended by the Regional Council: Hon. Cindy Allen (City of Long Beach) will serve as 2025-26 Regional Council president; Hon. Ray Marquez (City of Chino Hills) will serve as Regional Council first vice president; and Hon. Jenny Crosswhite (City of Santa Paula) will serve as Regional Council second vice president. Leadership also recognized Hon.
Surface Transportation Block Grant and Congestion Mitigation and Air Quality Improvement Program Call for Project Nominations Now Open
The federal fiscal year 2026-27 and federal fiscal year 2027-28 Surface Transportation Block Grant program (STBG) and Congestion Mitigation and Air Quality Improvement program (CMAQ) SCAG online application opened for all eligible applicants on March 31. This application will be available through May 16 at 5 p.m.
Surface Transportation Block Grant and Congestion Mitigation and Air Quality Improvement Program Guidelines Now Available
On March 6, the SCAG Regional Council approved the federal fiscal year 2026-27 and federal fiscal year 2027-28 Surface Transportation Block Grant program (STBG) and Congestion Mitigation and Air Quality Improvement program (CMAQ) Program Guidelines.
| Title | Date | Category | Available Files |
|---|---|---|---|
| February 26, 2019 TCWG Minutes | 02/26/2019 | Minutes | |
| Proposed Framework of Regional Emissions Analysis for Connect Socal | 02/26/2019 | Presentation | |
| Revised January 22, 2019 TCWG Minutes | 01/22/2019 | Minutes | |
| December 4, 2018 TCWG Meeting Agenda | 12/04/2018 | Agenda | |
| Revised December 4, 2018 TCWG Minutes | 12/04/2018 | Minutes | |
| October 23, 2018 Meeting Minutes | 10/23/2018 | Minutes | |
| October 23, 2018 TCWG Meeting Agenda | 10/23/2018 | Agenda | |
| September 25, 2018 TCWG Meeting Agenda | 09/25/2018 | Agenda | |
| September 25, 2018 TCWG Meeting Agenda Item 4.2 Checklist of Ozone Transportation Conformity Budgets - Coachella | 09/25/2018 | Presentation | |
| September 25, 2018 TCWG Meeting Agenda Item 4.2 Checklist of Ozone Transportation Conformity Budgets - South Coast | 09/25/2018 | Presentation | |
| September 25, 2018 TCWG Meeting Agenda Item 4.2 Checklist of Ozone Transportation Conformity Budgets - Western Mojave | 09/25/2018 | Presentation | |
| September 25, 2018 TCWG Meeting Minutes | 09/25/2018 | Minutes | |
| August 28, 2018 TCWG Meeting Agenda | 08/28/2018 | Agenda | |
| August 28, 2018 TCWG Meeting Agenda Item 4.3 Checklist of Imperial County PM10 Conformity Budgets | 08/28/2018 | Presentation | |
| Revised August 28, 2018 TCWG Meeting Minutes | 08/28/2018 | Minutes | |
| July 24, 2018 TCWG Meeting Agenda | 07/24/2018 | Agenda | |
| July 24, 2018 TCWG Meeting Minutes | 07/24/2018 | Minutes | |
| June 26, 2018 TCWG Meeting Agenda | 06/26/2018 | Agenda | |
| June 26, 2018 TCWG Meeting Minutes | 06/26/2018 | Minutes | |
| May 22, 2018 TCWG Meeting Item 4.2 Draft OCTA TCM Substitution Report | 05/22/2018 | Presentation | |
| May 22, 2018 TCWG Meeting Minutes | 05/22/2018 | Minutes | |
| Revised May 22, 2018 TCWG Meeting Agenda | 05/22/2018 | Agenda | |
| April 24, 2018 TCWG Meeting Minutes | 04/24/2018 | Minutes | |
| Revised April 24, 2018 TCWG Meeting Agenda | 04/24/2018 | Agenda | |
| March 27, 2018 TCWG Meeting Attachment 4.2-1 FHWA Survey | 03/27/2018 | Presentation | |
| March 27, 2018 TCWG Meeting Attachment 4.2-2 Map of 1997 Ozone Nonattainment Areas | 03/27/2018 | Presentation | |
| March 27, 2018 TCWG Meeting Minutes | 03/27/2018 | Minutes | |
| Revised March 27, 2018 TCWG Meeting Agenda v3 | 03/27/2018 | Agenda | |
| Attachment 4.2 Clarifications on Exempt Project Determinations | 02/06/2018 | Presentation | |
| Attachment 4.3 Proposed OCTA TCM Substitution ORA111207 | 02/06/2018 | Presentation |