Criteria Toxics Reporting

Learn about the California Air Resources Board's regulation for criteria pollutant and toxics emissions reporting.

The California Air Resources Board, or CARB, adopted a new regulation for criteria pollutant and toxics emissions reporting titled, “Regulation for the Reporting of Criteria Air Pollutants and Toxic Air Contaminants (CTR)," which became effective on January 1, 2020.

For more information, please visit CARB’s CTR web page.

The CTR Regulation aims to:

  • Require calendar year reporting of criteria and toxic pollutant emissions data from regulated air emissions sources; and
  • Establish consistent statewide annual emissions inventory data.

Compliance with CTR reporting will be implemented through:

  • The Data Update for the emissions inventory during the permit renewal process.
  • Other non-emissions inventory CTR data requirements may be requested during the Data Update or via a separate request.
  • Failure to provide required CTR information may be subject to enforcement action under the rule.

How is CTR reporting different from the Air District’s Data Update?

  • Reported data will represent the previous calendar year material usage/throughput, activity, and emissions. That means your reported data covers activity from January 1 to December 31.
  • Information for all permitted devices/sources with a Permit to Operate will be required.
    • The only exception would be any new device/source started up during the permit renewal process.
  • Additional CTR data requirements may be collected during the Data Update or via a separate request.

Who is subject to CTR reporting?

CTR ApplicabilityCriteriaCTR Implementation Yeartable-mobile-only-column
1Subject to CARB’s Mandatory Reporting Rule (MRR)2021
1
Criteria:
Subject to CARB’s Mandatory Reporting Rule (MRR)
CTR Implementation Year:
2021
2Facility emitting any criteria pollutant greater than or equal to 250 tons per year2021
2
Criteria:
Facility emitting any criteria pollutant greater than or equal to 250 tons per year
CTR Implementation Year:
2021
3Priority Score greater than or equal to 10*2022
3
Criteria:
Priority Score greater than or equal to 10*
CTR Implementation Year:
2022
4TBD2024 or later
4
Criteria:
TBD
CTR Implementation Year:
2024 or later

*A Priority Score is an Air District calculated number based on the estimated air toxics emitted at a facility.

Is my facility subject to Applicability 1 or 2?

Some facilities have already been notified because their permit anniversary or renewal date had to be moved to align the permit renewal process with CTR reporting deadlines.

The Air District will notify all Applicability 1 and 2 facilities by the end of November 2020.

What are the next steps for Applicability 1 and 2 facilities?

  • In late December or early January, the Air District will send out the Data Update to all affected facilities.
  • The owner or operator will be required to return the Data Update by the due date.

Is my facility subject to Applicability 3 and what are the next steps?

Some facilities have been or will be notified that their permit anniversary date was or will be moved for their 2021 permit renewal process to align with CTR requirements for 2022. This will impact most facilities with current anniversary or renewal dates in January, February, March, September, October, November, and December. If your facility’s Permit to Operate expires in any of these months, we will notify you if your anniversary date will be changed. Impacted facilities will have their 2021 permit coverage and fees adjusted accordingly.

Additional information will be sent to all Applicability 3 facilities around October 2021.

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Last Updated: 11/4/2020