Ariz. Rev. Stat. § 3-3612
A. A political subdivision that uses pesticides to conduct pest management on property that is owned, leased or managed by the political subdivision, including easements:
2. Must provide the department with the name and telephone number of the primary contact person or persons responsible for responding to department inquiries or concerns regarding compliance with this chapter. The primary contact person or persons at a minimum shall demonstrate to the department:
D. The following individuals are exempt from the certification requirements of this chapter:
3. A volunteer of a political subdivision while applying herbicides for the purpose of the eradication and control of noxious weeds as defined in section 3-201 and who is under the immediate supervision of a certified applicator. This exemption does not apply to a volunteer of a political subdivision who: