(1) Engineering controls and work practices.

(a) The employer must institute engineering controls and work practices to reduce and maintain employee exposure to MDA at or below the PELs except to the extent that the employer can establish that these controls are not feasible or where the provisions of subdivision (b) of this subsection or WAC 296-62-07615(1) apply.

(b) Wherever the feasible engineering controls and work practices which can be instituted are not sufficient to reduce employee exposure to or below the PELs, the employer must use them to reduce employee exposure to the lowest levels achievable by these controls and must supplement them by the use of respiratory protective devices which comply with the requirements of WAC 296-62-07615.

(2) Compliance program.

(a) The employer must establish and implement a written program to reduce employee exposure to or below the PELs by means of engineering and work practice controls, as required by subsection (1) of this section, and by use of respiratory protection where permitted under WAC 296-62-076. The program must include a schedule for periodic maintenance (e.g., leak detection) and must include the written plan for emergency situations as specified in WAC 296-62-07607.

(b) Upon request this written program must be furnished for examination and copying to the director, affected employees, and designated employee representatives. The employer must review and, as necessary, update such plans at least once every twelve months to make certain they reflect the current status of the program.

(3) Employee rotation. Employee rotation must not be permitted as a means of reducing exposure.