California Air Resources Board

CARB’s Oil and Gas Methane Regulation requires owners/operators of oil and natural gas facilities to conduct quarterly leak detection and repair (LDAR) surveys to monitor components for leaks and repair detected leaks within a specified time frame. Quarterly LDAR inspections began on January 1, 2018, and operators are required to submit annual LDAR reports to CARB by July 1 of each calendar year. For questions regarding the Annual LDAR Summaries, please contact the Oil and Gas Section.

“CARB’s Oil and Gas Methane Regulation 2021 Annual LDAR Summary,” April 2024

This Annual LDAR Summary is based on data received from operators for LDAR activities that occurred during 2021.

“CARB’s Oil and Gas Methane Regulation 2020 Annual LDAR Summary,” November 2023

This Annual LDAR Summary is based on data received from operators for LDAR activities that occurred during 2020.

“CARB’s Oil and Gas Methane Regulation 2019 Annual LDAR Summary,” November 2021

This Annual LDAR Summary is based on data received from operators for LDAR activities that occurred during 2019. The report was revised in 2022 to reflect corrections made in the 2018 Annual LDAR Summary.

“CARB’s Oil and Gas Methane Regulation 2018 Annual LDAR Summary,” October 2020

This Annual LDAR Summary is based on data received from operators for LDAR activities that occurred during 2018. The report was revised in 2022 to correct reported data that had the incorrect sector listed for the facility type.