(1) Where respiratory protection is required by this section, you must provide each employee an appropriate respirator that complies with the requirements of this section and chapter 296-842 WAC, Respirators.

(2) Respiratory protection is required:

(a) Where exposures exceed the PEL during periods necessary to install or implement feasible engineering and work practice controls;

(b) Where exposures exceed the PEL during tasks, such as certain maintenance and repair tasks, for which engineering and work practice controls are not feasible;

(c) During tasks for which an employer has implemented all feasible engineering and work practice controls and such controls are not sufficient to reduce exposures to or below the PEL;

(d) During periods when an employee or employees are in a regulated area; and

(e) Where specified for tasks performed according to the requirements in Table 1 of WAC 296-840-110 Specified exposure control methods.