The bill H.217, titled the Vermont Clean Air Preservation Act, aims to prohibit various forms of geoengineering, including solar radiation modification, cloud seeding, and other atmospheric interventions that may pollute the environment. It establishes a new chapter in Vermont law dedicated to geoengineering, defining key terms such as "atmospheric activity," "geoengineering," and "pollutant." The bill mandates that any suspected violations be reported to the Vermont State Police or local sheriffs, who are empowered to issue cease-and-desist orders and enforce compliance. Additionally, the bill outlines the responsibilities of government and armed forces projects, ensuring they adhere to the same regulations.

The legislation also includes provisions for penalties and enforcement, categorizing violations as felonies with fines up to $50,000 or imprisonment for up to two years. Each day of continued violation constitutes a separate offense. Furthermore, sheriffs are required to deputize and train Vermont citizens to assist in enforcing these regulations. The act is set to take effect upon passage, reflecting a strong commitment to preserving air quality and protecting the environment from harmful atmospheric experiments.