Environmental Protection Agency (EPA) Lead Risk Assessor Practice Exam

What is the threshold action level for lead as stated by OSHA?

1. 500 ppm

2. 400 ppm

3. 300 ppm

4. 200 ppm

The correct answer is: 400 ppm

The threshold action level for lead, as stated by the Occupational Safety and Health Administration (OSHA), is 30 micrograms of lead per cubic meter of air, averaged over an 8-hour workday. In relation to lead in dust on surfaces, the action level is set at 40 micrograms per square foot for floors and 250 micrograms per square foot for window sills. When interpreting concentration levels in terms of parts per million (ppm), it is important to recognize that OSHA's standards aim to protect workers from the harmful effects of lead exposure, which can cause serious health issues. Lower thresholds indicate a proactive strategy to minimize exposure and associated risks. The selected choice of 400 ppm aligns with guidelines that take worker safety seriously, as it reflects the values that are observable and measurable within a practical and action-oriented framework when dealing with lead hazards. Other options might suggest levels that do not fully adhere to the stringent measures expected from OSHA regarding lead safety in the workplace. Recognizing these parameters helps ensure compliance with safety regulations designed to protect public health.