Amendment to National Standards of Performance for Steel Plants: Electric Arc Furnaces Constructed After October 21, 1974, and On or Before August 17, 1983, and Electric Arc Furnaces Constructed After August 17, 1983

This action amends the national standards of performance for new stationary sources (NSPS) for electric arc furnaces (EAF) constructed after October 21, 1974, and on or before August 17, 1983 (40 CFR part 60, subpart AA), and the NSPS for EAF constructed after August 17, 1983 (40 CFR part 60, subpart AAa). Changes to both rules are being made to add alternative requirements for the monitoring of EAF capture systems in response to recommendations made by the Common Sense Initiative (CSI) subcommittee on iron and steel. The CSI was established by the Administrator to bring together affected stakeholders to find cleaner, cheaper, and smarter environmental management solutions. In addition, the EPA is revising two definitions for consistency and making a number of editorial changes. The EPA does not believe that these editorial changes will affect the applicability or requirements of the rule.