Under NESHAP regulations, what is the primary focus of monitoring?

• A. Emissions, and no visible sampling
• B. Personal Sampling
• C. Clearance
• D. Real-time monitoring

Answer: (A)

In NESHAP monitoring, the main focus is on what the facility emits. The standards are designed to limit hazardous air pollutants that leave the source, so monitoring aims to quantify actual emissions from the stack or process through methods like stack tests or continuous emissions monitoring systems. This emphasis on emissions data ensures the facility stays within regulatory limits. Personal sampling, which measures worker exposure, is not the primary objective of NESHAP compliance. Clearance testing relates to post-work cleanup in specific scenarios like asbestos abatement, not ongoing emission limits. Real-time monitoring can be used for certain cases to provide continuous emission information, but the core purpose remains verifying emissions rather than measuring personal exposure or post-work clearance.