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CTR Regulation Reminder: Additional Facilities Required To Report

August 30, 2024

CARB’s Criteria and Toxics Reporting (CTR) Regulations will be implemented at additional facilities starting in 2025, depending upon Permitted Process types and Activity Levels. These additional applicable facilities will be required to report annual emissions data for 2024 emissions. Specifically, facilities will provide emissions data for the first time if certain Activity Levels are exceeded for the specified Permitted Processes at a facility.

This initial round of reporting will be required in 2025 for data year 2024 (DY2024) for all applicable facility emissions. Facilities in Sector Phase 2, located in District Group A¹, will be affected. Similarly, facilities classified under Sector Phase 1, located in District Group B², will also be required to comply.

Table 1 below contains a summary of the District Group A, Sector Phase 2 facility categories required to report DY2024 emissions data for the first time in 2025. Table 2 below contains a summary of the District Group B, Sector Phase 1 facility categories required to report DY2024 emissions data for the first time in 2025.

Each local air district will implement these CTR requirements through their annual emissions reporting or emissions inventory program, such as the South Coast Air Quality Management District’s (SCAQMD’s) Annual Emissions Report (AER), which is due May 1, 2025 for DY2024.

Table 1: District Group A, Sector Phase 2 Facilities with First-Time Reporting for DY2024

Table 2: District Group B, Sector Phase 1 Facilities with First-Time Reporting for DY2024

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