No action required

Exposure measurements must be taken

All of 80 dBA

All of 80 dBA

Results made available to workers

Muffs and/or plugs must be available for workers who want to use them

Employer must study workplace to limit exposure levels to 90 dBA or less

Worker education on hearing conservation and noise control

Instruction on how to use muffs and plugs

If engineering controls cannot lower sound levels to 90 dBA or less, then wearing hearing protection devices (muffs and/or plugs) is mandatory

Periodic testing of workers

Areas must be posted with warning signs