The owner or operator may request 1 or more extensions of time for submittal of a reclamation plan for an existing exploration operation or an existing mining unit. If the State Mine Inspector grants an extension of time to submit a reclamation plan for an existing exploration operation or an existing mining unit, the extension shall not exceed 90 days. For each subsequent extension, the owner or operator shall submit a revised request which indicates any changes in the relevant factors for consideration shown in the previous request for extension.
Ariz. Admin. Code § R11-2-203