This bill aims to address greenhouse gas emissions from anesthetic gases used in medical, dental, and veterinary practices in Washington State. It recognizes that while significant efforts have been made to reduce emissions from major greenhouse gases like carbon dioxide and methane, anesthetic gases such as desflurane, isoflurane, sevoflurane, halothane, and nitrous oxide also contribute to greenhouse gas emissions and should not be overlooked. The legislation mandates the Department of Ecology to conduct a study by July 1, 2026, to identify sources, usage, and emissions of these gases, and to recommend regulatory measures and strategies for reduction. By January 1, 2027, the department must submit recommendations to the legislature based on the study's findings.

Additionally, the bill requires the Department of Ecology to develop a guidance document by April 1, 2027, aimed at reducing emissions associated with anesthetic gases. This document will be created in consultation with various stakeholders, including health departments and professional associations, and will consider best practices from other jurisdictions. While the goal is to minimize emissions, the guidance will allow flexibility for medical professionals to prioritize patient safety and comfort. By January 1, 2028, practitioners and facilities must adhere to the guidance, although no penalties will be imposed for non-compliance. The bill also includes a provision ensuring that if any part of the act is deemed invalid, the remainder will still be effective.