Which element is NOT typically part of an industrial hygiene sampling plan?

• A. Identification of tasks to sample.
• B. Frequency and duration of sampling.
• C. Randomly sampling without tasks.
• D. Analyze results to evaluate exposures and implement controls.

Answer: (C)

In an industrial hygiene sampling plan, the focus is on how exposure relates to specific work activities, how long sampling should run, and how the results will drive controls. Identifying tasks to sample ensures the data reflect real exposure scenarios tied to actual work. Specifying frequency and duration makes sure sampling captures representative exposure across shifts and tasks, rather than a one-off snapshot. Analyzing results to evaluate exposures and implement controls uses the data to decide if and what kind of controls are needed to protect workers.

Randomly sampling without tasks misses the context of which activities drive exposure, can overlook task-specific peaks, and doesn’t provide actionable information for implementing controls.