2.21.12. The employer must provide workers with theoretical and practical training on hearing protectors that addresses(1) their use and the elements to be taken into consideration in selecting hearing protectors in response to different workplace situations;
(2) the adjustment of hearing protectors;
(3) the inspection of hearing protectors;
(4) the maintenance of hearing protectors;
(5) the risks associated with noise and the importance of wearing protectors during any exposure to noise;
(6) the methods used to evaluate noise levels pursuant to section 2.21.7.