When evaluating a room for potential airborne hazards, what simple checks can be performed before measurement-based testing?

• A. Empty the room
• B. Inspect for ventilation adequacy, presence of sources, signs of moisture or mold, and evidence of proper storage and housekeeping
• C. Immediately start sampling without checks
• D. Ignore signs of moisture

Answer: (B)

Before measurement-based testing for airborne hazards, do a quick room check focused on ventilation, potential sources, moisture or mold indicators, and housekeeping practices. Assessing ventilation adequacy helps you understand how well the space exchanges air and whether concentrations measured during testing will reflect typical conditions or be suppressed/diluted. Identifying sources in the room points to possible emitters, so you know what you might be sampling (and whether targeted or longitudinal monitoring is needed). Looking for signs of moisture or mold warns you of microbial growth risks that can release spores and volatile compounds, which would influence both the type of sampling and interpretation of results. Checking evidence of proper storage and housekeeping helps gauge dust generation and secondary contamination sources, improving the representativeness of the measurements.

These simple checks guide how you plan the sampling—where to place samplers, how long to sample, and whether any remediation or controls are needed before testing. Skipping checks or ignoring moisture signs can lead to misleading results or missed hazards, since conditions that drive airborne contaminants won’t be understood from measurement alone.