We are taking direct final action to amend the national emission standards for hazardous air pollutants (NESHAP) for Ferroalloys Production: Ferromanganese and Silicomanganese. The amendments are being made in response to a petition for reconsideration submitted to the EPA following promulgation of the rule and a petition for review filed in the U.S. Court of Appeals for the District of Columbia Circuit. The amendments establish new emission limitations for ferromanganese and silicomanganese production in open submerged arc furnaces. We are establishing four subcategories within this category of furnaces and specifying numerical emission limitations for particulate matter (PM) for each to account for differences in emission potential and control, furnace size, operating conditions, and alloy type. We are making these amendments as a direct final rule because we view the amendments as noncontroversial and anticipate no adverse comments. In accordance with our general practice, we are also proposing these amendments in the "Proposed Rules" section of this Federal Register. If no adverse comments are received in response to this direct final rule, no further action is contemplated with respect to the proposal. If we receive adverse comments, the direct final rule will be withdrawn and all public comments received will be addressed in a subsequent final rule based on the proposed rule. If adverse comment is received only on a discrete portion of the rule, we will consider withdrawing only that portion of the rule. We will not institute a second comment period on the proposal. Any parties interested in commenting on the amendments should do so at this time.