This bill would prohibit Utah state agencies from setting pollution or waste regulations that are stricter than federal requirements. If no federal standard exists for a specific issue, any new state rule must be based on the best available science and clearly show a direct link between exposure and actual harm to human health. Exceptions include cases where stricter rules are federally mandated, site-specific needs, or emergencies. In practice, this bill limits Utah’s ability to adopt stronger environmental or waste protections than those established at the federal level.