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EMC Methods Support Directory

Email emc@epa.gov with questions regarding the topics presented in the table below by area and EPA test method(s), when applicable. The test methods listed are from: 

  • NSPS (40 CFR Part 60, Appendix A) for x-xx method series
  • NESHAP (40 CFR Part 61, Appendix B) for 1xx method series
  • SIP (40 CFR Part 51, Appendix M) for 2xx method series
  • NESHAP (40 CFR Part 63, Appendix A) for 3xx method series (MACT rules)

AreaEPA Test Method(s)
Acid GasPart 60 Methods 6, 6A, 6B, 7, 7A, 7B, 7C, 7D, 8, 11, 15, 15A, 16, 16A, 16B, 16C, 26 and 26A 
Alternative Test Methods DeterminationsN/A
AsbestosN/A
Basic SamplingPart 60 Methods 1, 1A, 2, 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 3, 3B, 3C, 4, and 19 
Capture EfficiencyPart 51 Methods 204, 204A, 204B, 204C, 204D, 204E, and 204F   
CEMSPerformance Specifications and QA Procedures
Coatings

Part 60 Methods 24 and 24A

Part 63 Method 311

Dioxins/Furans/Polychlorinated Biphenyls (PCBs)/Polycyclic Aromatic Hydrocarbons (PAHs)Part 60 Method 23
FencelinePart 63 Methods 325A, 325B, and 327 
FTIRPart 63 Methods 318, 320, and 321 
Instrumental MethodsPart 60 Methods 3A, 6C, 7E, 10, 10A-B, 20, 25A, and 25B 
LDARPart 60 Method 21 and Appendix K (Part 60) 
Metals

Part 60 Methods 12, 29, 30A, and 30B 

Part 61 Methods 101, 101A, 102, 103, 104, 105, 108, 108A, 108B, and 108C 

Part 63 Methods 306, 306A, and 306B 

Methane Alternative Test MethodsN/A
Method ValidationPart 63 Method 301
Opacity/Visual Emissions (VE)

Part 60 Methods 9 and 22 

Part 51 Methods 203A, 203B, and 203C 

Part 63 Methods 303 and 303A 

Organics

Part 60 Methods 18, 25, 25C, 25D, and 25E 

Part 61 Methods 106, 107, and 107A 

Part 51 Method 207 

Part 63 Methods 304A, 304B, 305, 307, 308, 323, and 326

Particulate Matter

Part 60 Methods 5, 5A, 5B, 5D, 5E, 5F, 5I, and 17 

Part 51 Methods 201, 201A, and 202 

Part 63 Method 315 

Protocol Gas and Calibration Gas DilutionPart 51 Method 205
Total FluoridesPart 60 Methods 13A, 13B, 14, and 14A
Vapor TightnessPart 60 Method 27
Wood HeatersPart 60 Methods 5G, 5H, and 28, 28A, 28R, 28 WWH, and 28 WWH PTS 

Specialty Methods

  • SW-846 Methods – Click on 'Contact Us About Hazardous Waste Test Methods' at the link to ask a question, provide feedback, or report a problem.
  • Conditional Methods (CTM) and Other Test Methods (OTM)
  • ASTM Methods – While EMC does not provide technical support for these methods; it does provide implementation support in rulemakings.
  • 40 CFR Part 75 Questions – Contact part75notifications@epa.gov. 

Important Notes

  • Part 51 Method 206 (Ammonia) has been renamed to Conditional Test Method (CTM) 027.
  • Part 63 Method 302 (General GC/MS) is cancelled.
  • EMC does not provide technical support to the following industry developed methods.
    • Part 63 Method 310A, B, C (Hexane in EPDM Rubber)
    • Part 63 Method 312A, B, C (Styrene in SBR Rubber)
    • Part 63 Method 313A, B (Styrene in PBR Rubber)
    • Part 63 Method 316 (Formaldehyde Colorimetric Method)
    • Part 63 Method 319 (Filter Efficiency; Paint Over-spray)

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Air Emission Measurement Center (EMC)

  • Test Methods
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Contact Us About Air Emission Measurements
Contact Us About Air Emission Measurements to ask a question, provide feedback, or report a problem.
Last updated on September 8, 2026
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