A Relative Accuracy Test Audit (RATA) is a critical evaluation process used to verify the accuracy of Continuous Emissions Monitoring Systems (CEMS) at stationary emission sources. This process compares data from your CEMS with data obtained using a Reference Method (RM), typically collected by an independent source test firm.
The test is performed while the source operates under specified conditions, and the comparison is based on at least nine pairs of data from both systems. The Relative Accuracy (RA) is determined using a 95% confidence level.
RATA frequency and criteria vary depending on the source’s location and regulatory requirements, such as the US EPA Performance Specifications. RATA frequency variance is based on:
This audit ensures that your monitoring systems are working accurately and in compliance with federal and local standards. The RATA Test also:
