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• March 2018 - Revisions to Method 301: Field Validation of Pollutant Measurement Methods from Various Waste Media - Final Rule (March 20, 2018) 

• January 2018 - Proposed Revisions to Test Methods - FR Notice (January 26, 2018)

• August 2017 - Proposed Revisions to EPA Method 202

• November 2016 - Policy Memo on Overlapping or Staggered Test Runs has been added as Guideline Document 53

• November 2016 - Clarification of Requirements for Method 303 Certification Training - Final Rule

• November 2016 - Revisions to Method 301: Field Validation of Pollutant Measurement Methods from Various Waste Media - Proposed Rule

• November 2016 - Revisions to Procedure 2:  Quality Assurance Requirements for Particulate Matter Continuous Emission Monitoring Systems at Stationary Sources - Direct Final and Proposed Rules

• August 2016 - Revisions to Test Methods and Testing Regulations; Final Rule, 8/30/2016 (PDF)(28 pp, 993 K, About PDF)

• July 2016 - Partial Withdrawal notice for Direct Final for PS 18 and Procedure 6 (PDF) (5 pp, 47 K, About PDF)

• May 2016 - Technical Amendments to Performance Specification 18 and Procedure 6
  • Direct Final Rule (PDF) (6 pp, 217 K, About PDF) - Federal Register - May 19, 2016
  • Parallel Proposed Rule (PDF) (5 pp, 203 K, About PDF) - Federal Register - May 19, 2016

• April 2016 - Direct Final Withdrawal notice for Method 303 (PDF) (1 p, 182 K, About PDF) - Federal Register - April 20, 2016

• March 2016 - MTG and MPG Highlights - 2015/2016

• March 2016 - Method 202 Best Practices Handbook and appendices are now available

• February 2016 - Clarifying Requirements for Method 303 Certification Training, Published in the Federal Register February 25, 2016
  • Direct Final Rule (PDF)(4 pp, 253 K, About PDF)
  • Parallel Proposal (PDF) (4 pp, 242 K, About PDF)
  • Fact Sheet (PDF) (2 pp, 19 K, About PDF)

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