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Site Remediation MACT Summary

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40 CFR 63 - Subpart GGGGG National Emission Standards for Hazardous Air Pollutants: Site Remediation MACT Rule (eCFR)

EPA MACT Web Site - Site Remediation NESHAP

Federal Register (68 FR 58171) Final Rule for Site Remediation NESHAP (PDF)

Federal Register (71 FR 69022) Final Rule for Site Remediation NESHAP Amendment (PDF)


  1. What is the purpose of this rule?
  2. What facilities are subject to this rule?
  3. What is an affected source at facilities subject to this rule?
  4. What are the emission standards for affected sources under this rule?
  5. What can affected sources do to comply with the emission limits?
  6. What are the requirements for remediation material that is shipped off-site?
  7. What are the general compliance requirements?
  8. What are the initial and continuous compliance requirements?
  9. When must affected sources show initial compliance?
  10. What are the notification, recordkeeping and reporting requirements?
  11. What is meant by the phrase" once in, always in" and why is it important to this MACT rule?