EPA is proposing amendments to the 2012 National Emission Standards for Hazardous Air Pollutants for Polyvinyl Chloride and Copolymers Production. Following the 2012 final rules, EPA received four reconsideration petitions from environmental groups and industry. This proposed action represents EPA’s response to those petitions. The proposed action includes process vent subcategory definitions and process vent and wastewater emission limits revisions, an alternative standard after the resin stripper, pressure vessel leak requirement clarifications and vapor balancing. In addition, EPA is proposing clarifications including technical corrections and to remove regulatory affirmative defense provisions.
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