Under what condition can periodic monitoring be ceased?

Periodic monitoring can be ceased when there are statistically proven measurements of exposure below the Permissible Exposure Limit (PEL) or theAction Level (AL). This is rooted in the regulatory framework governing workplace safety, which states that monitoring is essential to ensure that exposure levels are consistently maintained within safe limits. If data demonstrates that exposure levels are consistently below these thresholds, it indicates that the risk to worker health is reduced, justifying the cessation of ongoing monitoring.

The rationale behind this is to ensure that safety measures are based on empirical evidence rather than subjective feelings or changes in workforce size. Monitoring is a proactive measure that stems from exposure risks; thus, it can be appropriately reduced or stopped once reliable data confirms that the exposure risk is minimal. This practice ensures that regulatory compliance is met and that worker safety remains a top priority based on objective measurements.