NESHAP for Integrated Iron and Steel Manufacturing (40 CFR Part 63, Subpart FFFFF) (Final Rule)

This action finalizes the residual risk and technology review (RTR) conducted for the Integrated Iron and Steel Manufacturing Facilities source category regulated under national emission standards for hazardous air pollutants (NESHAP). The Agency found that risks due to emissions of air toxics from this source category are acceptable and that the current NESHAP provides an ample margin of safety to protect public health. Under the technology review, we found no developments in practices, processes, or control technologies that necessitate revision of the standards. In addition, we are taking final action to establish emission standards for mercury in response to a 2004 administrative petition for reconsideration which minimizes emissions by limiting the amount of mercury per ton of metal scrap used. We also are removing exemptions for periods of startup, shutdown, and malfunction (SSM) consistent with a 2008 court decision, and clarifying that the emissions standards apply at all times; adding electronic reporting of performance test results and compliance reports; and making minor corrections and clarifications for a few other rule provisions. These amendments require electronic reporting; remove the SSM exemptions; and impose other revisions that affect reporting and recordkeeping for integrated iron and steel facilities. We are also promulgating standards for mercury that require facilities to certify the type of steel scrap they use or conduct a performance test. This information is collected to assure compliance with 40 CFR part 63, subpart FFFFF.

The latest form for NESHAP for Integrated Iron and Steel Manufacturing (40 CFR Part 63, Subpart FFFFF) (Final Rule) expires 2026-09-30 and can be found here.