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Clean Air Rule

In March 2018, Thurston County Superior Court ruled that parts of the Clean Air Rule are invalid. The Superior Court's ruling prevents us from implementing the Clean Air Rule regulations that cap and gradually reduce major sources of carbon pollution. This means that compliance with the rule currently is suspended. On May 14, 2018 we published a media release and filed an appeal with the Washington State Supreme Court.

Under a separate Ecology rule, facilities covered by the Clean Air Rule still are required to report their emissions for the Greenhouse Gas Reporting program.

Washington’s water supplies, air quality, and infrastructure are at risk because carbon pollution is causing the climate to change. To help slow the impacts of climate change, we adopted the Clean Air Rule. This rule requires businesses that are responsible for large amounts of emissions to cap and reduce their carbon pollution.