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EPA recently updated several federal regulations for hazardous air pollutants (also known as HAP or air toxics). EPA’s actions address the Risk and Technology Review (RTR) required under the U.S. Clean Air Act.
This is the tenth in a series of articles covering EPA’s updates to air toxics regulations (also known as National Emission Standards for Hazardous Air Pollutants or NESHAP). The changes update individual subparts of 40 Code of Federal Regulations (CFR) Part 63. Find background on the NESHAP RTR requirements and a general overview of the recent changes in the Air Toxics Update. In the following weeks, Iowa DNR will continue to address changes to specific regulations affecting Iowa businesses.
Updates to the Standards for Iron and Steel Foundries
On September 10, 2020, EPA published the final NESHAP RTR Amendments for Iron and Steel Foundries (Subpart EEEEE). Facilities in this source category manufacture castings by melting metal in a furnace and then pouring the molten metal into a mold of a desired shape. Molded products are used in car engines, construction and machinery, among other uses. The NESHAP requirements are intended to reduce HAP emissions from metals and organic compounds. Iowa DNR estimates that four facilities are currently subject to the NESHAP for Iron and Steel Foundries.
The changes to the standards include, but are not limited to, the following:
For all affected sources, the compliance date for most of the SSM revisions was September 10, 2020. However, because EPA required new work practice standards to address volatile organic air toxics during SSM, the compliance date for these new requirements is March 9, 2021. The compliance date for all affected sources for the electronic reporting requirements is also March 9, 2021.
For more information: Iron and Steel Foundries
Implementation in Iowa
DNR plans to begin rulemaking to incorporate the updated standards—which will give DNR authority to administer the rules. In the interim, EPA will implement the NESHAP RTR changes. DNR is available to answer questions about the new amendments and will work with EPA Region 7 to assist facilities.
DNR staff will review the changes and contact facilities which we know are impacted and have substantively different requirements in their permits from the updated NESHAP. However, an affected facility should carefully review the updated NESHAP to be aware of any new requirements and compliance dates. An affected facility must still comply with the NESHAP RTR requirements even if the requirements are not included in an Iowa air permit.
If you have technical questions about the NESHAP changes, please contact Michael Hermsen (email: email@example.com; phone: 515-725-9577). For general questions, please contact Christine Paulson (email: firstname.lastname@example.org; phone: 515-725-9510).