Administrative rules; adopting environmental protection criteria stricter than federal requirements prohibited

HB 162 prohibits Alabama state agencies from creating or modifying environmental rules that set stricter standards than federal requirements for issues like air quality, water pollution, drinking water, hazardous waste, or contaminated sites. If no federal standard exists for a specific environmental issue, the bill requires agencies to base any new rule on "best available science" with a demonstrated causal link to proven human harm (like diagnosable disease), not just potential risk. The law exempts rules required by federal law, less strict rules, or emergency rules. This bill directly affects Alabama environmental agencies (like the DEP) and industries subject to environmental regulations, limiting their ability to enact stricter local standards without scientific justification.