Can a contractor cease personal air sampling for class 1 and 2 work?

• A. Yes
• B. No
• C. Only with written approval from supervisor
• D. Only after a negative exposure assessment for the entire project

Answer: (B)

Personal air sampling is the ongoing check that tells you exactly how much of a hazard workers are exposed to during a job. For high-risk asbestos work—Class I and II—the potential for exposure is significant and can change as work conditions shift (how much material is disturbed, containment effectiveness, weather, and work methods all influence actual concentrations). Because exposures can fluctuate and surpass limits even after initial testing, you must keep collecting personal air samples throughout these tasks. A supervisor’s written approval or a negative exposure assessment for the whole project doesn’t justify stopping sampling for these classes. The monitoring is essential to ensure worker safety and regulatory compliance, so you don’t cease personal air sampling for Class I and II work.