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EPA will finalize proposed amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Clay Ceramics Manufacturing source category. The proposed amendments are in response to a petition for reconsideration filed by industry stakeholders on the final rule promulgated on October 26, 2015 (80 FR 65470), as well as our review of the 2015 rule with respect to other issues raised by stakeholders. EPA will finalize the proposal to revise the temperature monitoring methodology used to demonstrate continuous compliance with the dioxin/furan emissions limit of the final rule. In addition, EPA will finalize action with respect to concerns raised by industry stakeholders about visible emissions monitoring of tunnel kiln stacks for continuous compliance with particulate matter and mercury emission limitations. EPA will also finalize proposed amendments to the requirements for weekly visual inspections of system ductwork and control device equipment for water curtain spray booths. Lastly, EPA will take final action with respect to proposed amendments to the NESHAP regarding emissions averaging and make technical corrections.