Governing Law and Regulations
Iowa Department of Natural Resources (DNR) Environmental Services Division Air Quality Bureau
Linn County Public Health Department Air Quality Division
Polk County Public Works Air Quality Division
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Iowa requires any new or modified air emissions source, air emissions control device, or anaerobic lagoon to secure an air quality permit to construct, unless specifically exempted. New major sources and major modifications must comply with the applicable provisions of Prevention of Significant Deterioration (PSD).
Iowa currently has areas that are in nonattainment with one or more of the National Ambient Air Quality Standards (NAAQS). The provisions of nonattainment New Source Review (NSR) apply to new major sources or major modifications in those areas, while PSD requirements apply to attainment areas. Iowa administers state implementation plan (SIP)-approved nonattainment NSR and PSD programs. Therefore, the provisions of federal nonattainment NSR, PSD, and any amendments are not effective in Iowa until a SIP revision incorporating provisions at least as stringent as the federal requirements is submitted by the state and approved by the U.S. Environmental Protection Agency (EPA). The Iowa ...