What is the purpose of a cleaning verification (CV) in the cleaning process?

• A. To calibrate equipment
• B. To verify cleaning effectiveness before releasing the area
• C. To check humidity
• D. To measure air velocity

Answer: (B)

Cleaning verification checks that the cleaning work actually removed lead dust to the required standard before the space can be released for use. After cleaning, an inspector visually examines the area for any visible residue and may collect surface wipe samples to measure lead levels. These measurements are compared to established clearance criteria; if the area meets these criteria, it’s deemed clean enough for occupancy. This step ensures safety and regulatory compliance by confirming the cleaning was effective. It isn’t about calibrating equipment, humidity, or air velocity, which are separate QA/environmental monitoring tasks.