The EPA proposed national emission standards for hazardous air pollutants (NESHAP) for ferroalloys production on August 4, 1998 (63 FR 41508). The purpose of this document is to present a summary of the public comments received on the proposed standards and the responses developed by the EPA. This summary of comments and responses serves as the basis for revisions made to the standards between proposal and promulgation. 

• Technical Document for Promulgation of Standards: National Emission Standards for Ferroalloys Production: Ferromanganese and Silicomanganese Comment and Response Summary (PDF)(34 pp, 110 K, April 13, 1999)