QSTI: Qualified Source Testing Individual

The Qualified Source Testing Individual (QSTI) program is conducted by the Source Evaluation Society (SES) as a service to the source testing industry.


The Qualified Source Testing Individual (QSTI) program is conducted by the Source Evaluation Society (SES) as a service to the source testing industry.

The fundamental goal of the SES QSTI examination and assessment process is to determine the candidate's proficiency in both the knowledge and ability to apply source testing methodologies and fundamental chemistry and engineering principles as applicable in the field.  The expectation is the candidate is able to understand and apply physical gas laws, chemistry, safety and hazardous materials handling, theoretical knowledge of source testing fundamentals in addition to demonstrating ethical and professional conduct as representation of the SES as a QSTI.

There are five SES QSTI method group exams:

Group 1 - Gas flow, isokinetic sampling, and particulate matter testing;
Group 2 - Sampling for gaseous pollutants with manual and wet chemistry test methods;
Group 3 - Measuring gaseous pollutant concentrations with instrumental test methods and conducting CEMS RATAs;
Group 4 - Testing for emissions of hazardous metals; and
Group 5 – Conducting Part 75 CEMS RATAs.

LEHDER's Emissions Testing Team includes 8 QSTI accredited team members, with certifications including:

  • 8 members with Group 1;
  • 5 members with Group 2;
  • 2 members with Group 3; and
  • 3 members with Group 4.

SES Recognition

In 2013, LEHDER Principal Michael Denomme received The Matthew DeVito Award from the Source Evaluation Society.

The Matthew DeVito Award recognizes an individual’s superior ethical conduct and major contributions towards ensuring measurement data quality and representativeness, and the safe implementation of source testing. 

Questions?

For more detailed information about QSTI at LEHDER, please contact:

Michael Denomme

Peter Pakalnis

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