Air quality

SJTPO is responsible for assuring conformity of transportation decisions with the air quality State Implementation Plan (SIP) and the Federal 1990 Clean Air Act Amendments.

As part of this responsibility, SJTPO conducts many procedures required under transportation conformity regulations for development and amendments of our Transportation Improvement Programs (TIP), and preparation of our Regional Transportation Plan.  In addition, SJTPO is called upon to participate in a variety of Statewide air quality planning efforts and must represent the region's interests in transportation air quality matters.


Click here to view the Transportation Conformity Finding (May 2007)


For more information on the Air Quality Conformity Demonstration for the SJTPO 2025 Regional Transportation Plan, please click here.