Ariz. Admin. Code § 18-1-101
The definitions in A.R.S. § 41-1001, except for the definition of "person", shall apply to this Chapter. In addition, the terms in this Chapter shall have the following meanings:
1. "Attorney general" means the attorney general of the state of Arizona and includes any assistant attorneys general or other attorneys appointed by the Office of the Attorney General to represent the Department at a contested case.
2. "Department" means the Department of Environmental Quality.
3. "Director" means the Director of the Department of Environmental Quality or the Director's designee.
4. "General public hearing" means a hearing, subject to the requirements of Article 4, held to obtain comment from the public with respect to Department actions. "General public hearing" shall not include oral proceedings, or contested case hearings.
5. "Hearing officer" means an individual appointed by the Director to perform the duties described in R18-1-203 at any contested case hearing.
6. "Oral proceeding" means a proceeding held during the rulemaking process, as described by A.R.S. § 41-1023.
7. "Person" means an individual, employee, officer, managing body, trust, firm, joint stock company, consortium, public or private corporation, including a government corporation, partnership, association, state, a political subdivision of this state, or commission or the United States Government or a federal facility, interstate body or other entity.
8. "Presiding officer" means any individual appointed by the Director to perform the duties described in R18-1-304 at any oral proceeding.
Ariz. Admin. Code § R18-1-101