Question

Using an 8 hour time weighted average what is the permissible exposure limit to mda

Answer 1

The employer must ensure that no employee is exposed to MDA above the permissible exposure limit (PEL) of 10 parts per billion (ppb) as an 8-hour time-weighted average (TWA) or a short-term exposure limit (STEL) of 100 ppb averaged over a 15-minute sampling period.