Comal Emissions Testing delivers expert environmental air emissions audits (stack testing) and consulting services, proudly serving a wide range of industries nation wide.

In addition to performing a wide range of emissions testing, CET provides QA/QC services to our clients.  We can review test reports and protocols to ensure that all required information is included prior to submittal to the appropriate regulatory agency.  Once the QA/QC has been performed we are able to enter the data into the EPA’s Electronic Reporting Tool for CEDRI upload.  We also offer nationwide on-site quality observations of stack tests.

We are proud to be A2LA accredited — a distinguished, third-party recognition from the American Association for Laboratory Accreditation. This accreditation confirms that CET meets rigorous international standards for technical competence, quality systems, and operational integrity.

For our clients, this means confidence in the accuracy, consistency, and reliability of our testing, calibration, and inspection services.

List of Analytes

  • Volumetric Flow Rate

  • Total Particulate Matter

  • Sulfur Dioxide

  • Nitrogen Oxides

  • Visible Emissions

  • Carbon Monoxide

  • Lead

  • Dioxins and Furans

  • Volatile Organic Compounds

  • Metals

  • Mercury

  • PM2.5 and PM10

  • Ammonia

  • Hydrogen Chloride

  • Relative Accuracy Performance Audits

  • Cylinder Gas Audits

  • Electric Generating Unit QA/QC

Method or Procedure

  • EPA Methods 1-4

  • EPA Methods 5/202

  • EPA Method 6C

  • EPA Method 7E

  • EPA Method 9

  • EPA Method 10

  • EPA Method 12

  • EPA Method 23

  • EPA Method 25A

  • EPA Method 29

  • EPA Method 30B

  • EPA Methods 201A/202

  • EPA Method 320

  • EPA Method 26A or 321

  • EPA Performance Specifications 2-6, 8, and 12B

  • 40 CFR 60, Appendix F

  • 40 CFR 75, Appendix A

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