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Title 40

Displaying title 40, up to date as of 9/14/2026. Title 40 was last amended 9/14/2026.
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  1. Title 40 —Protection of Environment
  2. Chapter I —Environmental Protection Agency
  3. Subchapter C —Air Programs
  4. Part 63 —National Emission Standards for Hazardous Air Pollutants for Source Categories
  5. Subpart FFFFF   View Full Text
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eCFR Content

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Title 40Protection of EnvironmentPart / Section
Chapter IEnvironmental Protection Agency1 – 1099
Subchapter CAir Programs50 – 99
Part 63National Emission Standards for Hazardous Air Pollutants for Source Categories63.1 – 63.12099
Subpart FFFFFNational Emission Standards for Hazardous Air Pollutants for Integrated Iron and Steel Manufacturing Facilities63.7780 – 63.7852
What This Subpart Covers63.7780 – 63.7783
§ 63.7780What is the purpose of this subpart?
§ 63.7781Am I subject to this subpart?
§ 63.7782What parts of my plant does this subpart cover?
§ 63.7783When do I have to comply with this subpart?
Emission Limitations and Standards63.7790 – 63.7793
§ 63.7790What emission limitations must I meet?
§ 63.7791How do I comply with the requirements for the control of mercury from BOPF Groups?
§ 63.7792What fenceline monitoring requirements must I meet?
§ 63.7793What work practice standards must I meet?
Operation and Maintenance Requirements63.7800
§ 63.7800What are my operation and maintenance requirements?
General Compliance Requirements63.7810
§ 63.7810What are my general requirements for complying with this subpart?
Initial Compliance Requirements63.7820 – 63.7827
§ 63.7820By what date must I conduct performance tests or other initial compliance demonstrations?
§ 63.7821When must I conduct subsequent performance tests?
§ 63.7822What test methods and other procedures must I use to demonstrate initial compliance with the emission limits for particulate matter?
§ 63.7823What test methods and other procedures must I use to demonstrate initial compliance with the opacity limits?
§ 63.7824What test methods and other procedures must I use to establish and demonstrate initial compliance with operating limits?
§ 63.7825What test methods and other procedures must I use to demonstrate initial compliance with the emission limits for hazardous air pollutants?
§ 63.7826How do I demonstrate initial compliance with the emission limitations that apply to me?
§ 63.7827How do I demonstrate initial compliance with the operation and maintenance requirements that apply to me?
Continuous Compliance Requirements63.7830 – 63.7835
§ 63.7830What are my monitoring requirements?
§ 63.7831What are the installation, operation, and maintenance requirements for my monitors?
§ 63.7832How do I monitor and collect data to demonstrate continuous compliance?
§ 63.7833How do I demonstrate continuous compliance with the emission limitations that apply to me?
§ 63.7834How do I demonstrate continuous compliance with the operation and maintenance requirements that apply to me?
§ 63.7835What other requirements must I meet to demonstrate continuous compliance?
Notifications, Reports, and Records63.7840 – 63.7843
§ 63.7840What notifications must I submit and when?
§ 63.7841What reports must I submit and when?
§ 63.7842What records must I keep?
§ 63.7843In what form and how long must I keep my records?
Other Requirements and Information63.7850 – 63.7852
§ 63.7850What parts of the General Provisions apply to me?
§ 63.7851Who implements and enforces this subpart?
§ 63.7852What definitions apply to this subpart?
Table 1 to Subpart FFFFF of Part 63
Emission, Opacity, and Work Practice Limits
Table 2 to Subpart FFFFF of Part 63
Initial Compliance With Emission and Opacity Limits
Table 3 to Subpart FFFFF of Part 63
Continuous Compliance With Emission and Opacity Limits
Table 4 to Subpart FFFFF of Part 63
Applicability of General Provisions to Subpart FFFFF
Table 5 to Subpart FFFFF of Part 63
Toxic Equivalency Factors
Table 6 to Subpart FFFFF of Part 63
List of Polycyclic Aromatic Hydrocarbons
eCFR Content