All variances granted hereunder shall have only future effect. In their discretion, the Commission may decline to entertain an application for variance on the subject or issue concerning which a citation has been issued to the employer involved and a proceeding on the citation or a related issue concerning a proposed penalty or period of abatement is pending before the Federal Occupational Safety and Health Review Commission, Office of Administrative Hearings or the Arizona Review Board until the completion of such proceeding.
Ariz. Admin. Code § R20-5-652