Removal of Affirmative Defense Provisions From the National Emission Standards for Hazardous Air Pollutants for the Oil and Natural Gas Production Facility and Natural Gas Transmission and Storage Facility Source Categories

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The EPA is proposing amendments to the National Emission Standards for Hazardous Air Pollutants for the oil and gas industry issued under the Clean Air Act. Specifically, the EPA is proposing to remove the affirmative defense provisions of the National Emission Standards for Hazardous Air Pollutants for both the Oil and Natural Gas Production source category and the Natural Gas Transmission and Storage source category.