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• 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)

• August 2016 - Information on the 2017 Measurement Technology Workshop

• 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)

• September 2015 - Notice Test Methods Revisions Public Hearing Notice

• April 2015 - MTG and MPG Highlights - 2014 (PDF)(11 pp, 361 K, About PDF)

• November 2014 - Draft methods OTM33 “Geospatial Measurement of Air Pollution, Remote Emissions Quantification” and OTM 33A “Geospatial Measurement of Air Pollution, Remote Emissions Quantification - Direct Assessment (GMAP-REQ-DA)” with their appendices and supporting data are now available. It is posted on our Other Test Methods page. These methods are being posted in draft form for public use and evaluation. If any end users have data, comments or suggestions related to this method, please contact Eben Thoma, EPA ORD, thoma.eben@epa.gov or Jason DeWees, EPA OAQPS, dewees.jason@epa.gov.

• August 2014 - A new method, OTM-35, "Measurement of Particulate Matter and Other Heavy Metals from Electric Arc Welding Processes," is now available on our Other Methods page

• July 2014 - Appendix F, Procedure 3, for continuous opacity monitoring systems has been finalized. The files are also available on our Promulgated Performance Specifications page
  • Final Rule (PDF) (6 pp, 256 K, About PDF)
  • Fact Sheet (PDF)(2 pp, 89 K, About PDF)

• April 2014 - The approved alternative methods ALT-061 and ALT-087 have been withdrawn (The file is also available on the Alternative Methods page)
  • Withdrawal document (PDF)(2 pp, 111 K, About PDF)

• April 2014 - EPA issued interim guidance (PDF)(6 pp, 517 K, About PDF) for the treatment of condensible particulate matter test results in the PSD and NSR permitting programs on April 8, 2014. The file is also available under the Method 202 page.

• February 2014 - The final rule entitled “Revisions to Test Methods and Testing Regulations” was signed by the EPA Administrator on January 28, 2014.
  • Final Rule (PDF) (280 pp, 1.8 M, About PDF)
  • Fact Sheet (PDF) (1 p, 20 K, About PDF)

• September 2013 - Highlights of EPA Test Method Activities 2013 (PDF) (11 pp, 114 K)

• June 2013 - Updated Chronology of EPA Emission Test Methods for 2013 (PDF)(9 pp, 236 K, About PDF)

• March 2013 - The 2013 Measurement Technology Workshop was held on January 29-31, 2013, at the Environmental Protection Agency Main Campus in Research Triangle Park, North Carolina.

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