Current Air District Rules
California's 35 local Air Pollution Control Districts (APCD) or Air Quality Management Districts (AQMD) are responsible for addressing emissions from stationary sources through permits and local rules.
This tool allows users to search, view and download information related to current air district rules. Additional information about the tool including background information, definitions, and training materials are available at the bottom of this page. Download the complete dataset as an Excel file here.
Don't Know Your Air District? Query Air Districts by Zip Code, City, or County.
This data represents a summary of current air district rules and uses filter fields developed for this tool. Because this data is at a summary level, many rule details are not captured. For specific questions please refer to the rule text or contact the Air District which promulgated the rule. For superseded or rescinded rules (older versions of rules which are no longer in effect), please contact us. For information regarding inclusion of Air District rules in the State Implementation Plan (SIP), please see the CARB Rules Log Database.
Prohibitory rule stringency level may vary by district based on the severity of the air quality problem, local permitting program requirements, and the feasibility of emissions controls (including energy, economic, and environmental impacts).
Over the next few years, similar tools will be developed and released as part of CARB's Technology Clearinghouse system, including an expanded version of this tool that includes prohibitory rule applicability, exemptions, and emissions limits for mobile and stationary source rules.
The tool provides several filters to help users quickly navigate through the district rules data, including:
- Rule Type: This filter captures the general type of rule including:
- ATCM: Air Toxic Control Measures.
- Federal: Rules developed at the Federal level.
- General: Procedural rules or rules that do not fit in other categories.
- Incentives: Rules that define incentives or credit programs.
- NSR: New Source Review rules.
- Prohibitory: Rules with an emission limit meant to reduce air pollution.
- Transportation Control Measures: Rules for transportation sources.
- Rule Stringency: The California stringency of the rule, as determined by the air district, at the time of adoption.
- BARCT: Best Available Retrofit Control Technology.
- T-BARCT: Best Available Retrofit Control Technology for toxic pollutants.
- RACT: Reasonably Available Control Technology.
- Unknown: The stringency is unknown.
- Not Determined: An analysis to determine the stringency of the rule has not yet been performed.
Tool Training Materials
- Search bar information and common terms
- Additional training materials are in development
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