On April 24, 2024, the commission adopted the HGB Severe Area AD SIP Revision for the 2008 Eight-Hour Ozone NAAQS (Non-Rule Project No. 2023-110-SIP-NR). The SIP revision includes a photochemical modeling analysis, a weight of evidence analysis, a reasonably available control technology analysis, a reasonably available control measures analysis, motor vehicle emissions budgets for 2026, and a contingency plan. The SIP revision also incorporates revisions to 30 Texas Administrative Code Chapter 115, Control of Air Pollution from Volatile Organic Compounds (Rule Project No. 2023-116-115-AI) and 30 Texas Administrative Code Chapter 117, Control of Air Pollution from Nitrogen Compounds (Rule Project No. 2023-117-117-AI). For additional information, please visit the HGB: Latest Ozone Planning Activities webpage.