California Air Resources Board

The following guidance documents are provided by CARB to assist reporters in complying with the Regulation for the Reporting of Criteria Air Pollutants and Toxic Air Contaminants (CTR). These guidance materials are provided solely for informational purposes to assist reporters in meeting the requirements of CTR, and do not and cannot create or alter any legal requirements of CTR. The finalized regulatory requirements are available through the CTR Regulation page.

General CTR Reporting Guidance

• Guidance for Reporting 2023 Emissions Data

• CTR FAQs Updated 9/27/2023

•  Unofficial CTR Regulatory Text

• CTR Fact Sheet

• CTR District Liaisons