What is OSHA’s Permissible Exposure Limit (PEL) for lead?

The correct answer regarding OSHA's Permissible Exposure Limit (PEL) for lead is 50 µg/m³ (micrograms per cubic meter), which is significantly lower than the values presented in the options. The PEL represents the maximum allowable concentration of lead in workplace air over an 8-hour work shift. This limit is established to protect workers from the adverse health effects of lead exposure, which can include neurological issues, blood disorders, and other serious health problems.

It's important to note that the true PEL is 50 µg/m³, and not 50 mg/m³ as might be interpreted from the context. The other options provided, including 30 mg/m³, 25 mg/m³, and 75 mg/m³, are all substantially higher than the actual permissible limit, reflecting an unsafe exposure level that would pose considerable health risks to workers. Therefore, understanding the importance of the PEL in establishing safe occupational exposure limits is critical for lead risk assessors and professionals working in environments where lead is present.