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On June 30, 2015, the EPA issued final amendments to the National Emission Standards for Hazardous Air Pollutants: Ferroalloys Production (40 CFR part 63, subpart XXX). The EPA received two petitions for reconsideration of the final amendments. This action would address three issues identified in the petitions for reconsideration. This proposal will request comment on three requirements in the final rule. The first issue is continuous baghouse monitoring with bagleak detection systems for positive-pressure baghouses. The second issue is the increase in polyaromatic hydrocarbon (PAH) compliance test frequency in the final rule, without specifically requesting comment on increasing the PAH testing frequency in the 2014 supplemental proposal (79 FR 60284). The third issue is the use of digital camera opacity technique (DCOT) for determining compliance with the shop building opacity standards.