A bill for an act relating to the intentional emission of air contaminants into the atmosphere.

HF 191 prohibits the intentional emission of air contaminants within Iowa for the purpose of deliberately altering temperature, weather, or sunlight intensity (geoengineering). It directly affects any entity or individual conducting such emissions in the state, overriding conflicting existing laws. The bill requires the Environmental Protection Commission to adopt implementing rules, including emergency rules for immediate enforcement. Key mechanisms include a clear prohibition on weather-modification emissions and a mandate for the Commission to develop specific regulations under existing rulemaking procedures. The bill focuses solely on preventing intentional atmospheric manipulation, not general air pollution control.