EPA PS-8 Explained | Volatile Organic Compound (VOC) CEMS Certification

* VOC Measurement Principles: A look at flame ionization (FID), photoionization (PID), and non-dispersive infrared (NDIR) detection methods generating a single combined response value.

* Calibration Drift (CD) Limits: CEMS system drift must not exceed 2.5% of the established span value over the testing period. * Relative Accuracy (RA) Calculations: Understanding the data reduction requirements. PS-8 references the core calculation framework of PS-2 for final compliance checks. * Reference Method Strategies: Reviewing simultaneous sampling run protocols to match CEMS data against the official Reference Method.

Calibration Drift (CD) Limit:  2.5% of the span value. Highlight that this is tighter than the 5% limit found in PS-4 and PS-5.

Detector Flexibility: PS-8 allows multiple detection principles—including Flame Ionization (FI), Photoionization (PI), and Non-Dispersive Infrared (NDIR)—provided they generate a single combined response value for the VOC mixture present.

The PS-2 Link: Explicitly note that for the analytical procedures, calculations, and reporting, PS-8 directly drops back to and adopts the data analysis structures of Performance Specification 2.

Whether you are configuring a data acquisition system (DAHS), prepping for a VOC RATA, or building your industrial source testing foundation, this video provides a clear step-by-step breakdown. #EPAPS8 #VOCCEMS #SourceTesting #EnvironmentalEngineering #QSTIPrep #StackTesting #AirCompliance #FIDAnalyzer