Rules Log Database (RLDB)

This page last updated April 17, 2019

The Rules Log Database (RLDB) chronicles the history of rules controlling sources of air pollution, as developed and adopted by California's 35 air pollution control and air quality management districts. The RLDB lists the dates the district board first adopted and subsequently amended or rescinded a rule, and the date the California Air Resources Board (CARB) received the rule. The RLDB also lists the date the rule was submitted, upon request of the district, to the United States Environmental Protection Agency (U.S. EPA) for inclusion in to the State Implementation Plan (SIP). Finally, the RLDB gives the dates and types of U.S. EPA rulemaking actions on the rule.

Currently, the RLDB contains records for rules that are intended by the districts to be revisions to the SIP and which were adopted or amended during the period January 1, 1981, to the present.

To access the RLDB,

After you have selected a district, you may select/use one of the following items and then click the "Submit" button to process your request. If you do not select any options, and click on "Submit" you will get a list of all of the regulations, rules and titles for the district you selected. From that list, you will be able to go directly to the individual rule of your choice.

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  • If you know the specific district rule or regulation from the selected district that you wish to look up, enter the rule or regulation number below and choose the appropriate radio button. (Note that district regulations are often numbered using Roman numerals (e.g., I, II, III)).

  • Alternately, you may search the rule titles in all 35 districts for specific subjects by entering a keyword below and select "Statewide" in the dropdown menu above.

Little Blue Book

For information regarding U.S. EPA guidance on rule development for rules intended to be part of the SIP, visit: Little Blue Book

Contact Information

Note: CARB cannot guarantee the accuracy of the record information contained in the RLDB. If you have any questions or comments regarding the record information, please contact: