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Iowa's natural resources plates include the state bird and flower, pheasant, eagle, buck and a Brook trout. Support conservation in Iowa by buying a natural resource plate for your vehicle.
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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 seventh 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). 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 address changes to specific regulations affecting Iowa businesses.
Updates to the Standards for Miscellaneous Organic Chemical Manufacturing (MON)
On Aug. 12, 2020, EPA published final NESHAP RTR amendments for the MON. This source category applies to miscellaneous specialty chemical production and includes the following emission sources: process vents, storage tanks, equipment leaks, wastewater streams, transfer racks and heat exchange systems. DNR estimates that 19 Iowa facilities are currently subject to this NESHAP.
New Requirements for MON (40 Code of Federal Regulations (CFR) Part 63, Subpart FFFF)
The changes to the MON include, but are not limited to, the following:
Affected sources that commenced construction or reconstruction after Dec. 17, 2019, must comply with all new requirements upon initial startup, or by Aug. 12, 2020, whichever is later.
Affected sources that commenced construction or reconstruction on or before Dec. 17, 2019, must comply with the new requirements by the compliance dates specified below.
For more Information (EPA's MON webpage)
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 changes to the MON. DNR is available to answer questions about the new amendments and will work with EPA Region 7 to assist facilities.
Because the rule includes substantive changes, especially the amendments regarding ethylene oxide emissions, all facilities subject to the MON should review the changes. DNR staff will review the changes and contact facilities that we know are impacted and have substantively different requirements in their permits from the updated MON. An affected facility must still comply with the MON requirements even if the requirements are not included in an Iowa air permit.
In the upcoming weeks, please keep an eye on your inbox for Air Toxics updates on other individual source categories.
If you have technical questions about the NESHAP changes, please contact Michael Hermsen (email: firstname.lastname@example.org; phone: 515-725-9577). For general questions, please contact Christine Paulson (email: email@example.com; phone: 515-725-9510).