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Clean Air Act National Stack Testing Guidance

Related Information
  • Regional Contacts for Stack Test Method Issues or Other Stack Test Questions
  • Air Emission Measurement Center Guideline Documents
  • GD 55 – Memo on Number of Test Runs to Demonstrate Compliance (pdf) (107.81 KB)

The Clean Air Act (CAA) National Stack Testing Guidance:

  • expands upon CAA Compliance Monitoring Strategy and the High Priority Violation Policy to fully address the concerns raised by the IG on this issue.
  • improves uniformity on how stack tests are conducted for determining and demonstrating compliance with the NSPS (40 CFR Part 60), NESHAP (40 CFR Part 61), and MACT (40 CFR Part 63).
  • improves coordination between EPA and state/local agencies.
  • enhances EPA oversight of state/local programs to ensure that the tool of stack testing is being sufficiently and properly utilized.
  • Clean Air Act National Stack Testing Guidance (pdf) (126.2 KB, April 27, 2009 (supersedes the 2005 guidance))

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Contact Us about Compliance
Contact Us about Compliance to ask a question, provide feedback, or report a problem.
Last updated on May 13, 2025
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