Transportation Conformity Working Group

The Transportation Conformity Working (TCWG) is a forum to support interagency coordination to help improve air quality and maintain transportation conformity in Southern California. The group meets on a monthly basis to facilitate an inclusive air quality planning process and to fulfill the interagency consultation requirements of the Federal Transportation Conformity Rule. The group helps resolve regional issues pertaining to transportation conformity and coordinates with and supports the quarterly meetings of the Statewide Transportation Conformity Working Group.

Membership of the Southern California TCWG includes federal (US EPA, US EPA Region 9, FHWA, FTA), state (CA Air Resources Board, Caltrans), regional (Air Quality Management Districts, SCAG, etc.), and sub-regional (County Transportation Commissions) agencies and other stakeholders.

Project-Level Conformity

Regional Conformity Determinations

Regional Transportation Plans (RTPs) and Federal Transportation Improvement Programs (FTIPs)

Air Quality Management Plans (AQMPs)/State Implementation Plans (SIPs)

Transportation Control Measures (TCMs)