A bill for an act relating to duties of the department of natural resources related to air quality including reporting requirements, certifications, data gathering, and rules references.

This bill amends Iowa's air quality laws to update reporting requirements for greenhouse gas emissions. It changes the annual report due to the governor and legislature to cover emissions from two prior years (aligning with EPA's schedule), and allows the EPA's annual inventory to fulfill this state requirement. The bill also repeals outdated mandates for the Department of Natural Resources (DNR) to create a statewide greenhouse gas inventory and operate a voluntary registry, as federal rules now cover these tasks. These changes primarily affect the DNR and regulated businesses (like major polluters under the federal Clean Air Act) by adjusting their reporting obligations.