1. A. A source may voluntarily propose in its application, and accept in its permit, emissions limitations, controls, or other requirements in order to avoid interfering with attainment or maintenance of a NAAQS, to avoid impairing visibility, to comply with any other requirement of the Act, or to generate emissions reductions credits pursuant to 18 A.A.C. 2, Article 12.

2. B. In order for a source to obtain a permit containing voluntarily accepted emissions limitations, controls, or other requirements, the source shall demonstrate all of the following in its permit application:

   1. 1. The emissions limitations, controls, or other requirements to be imposed under subsection (A) are at least as stringent as the emissions limitations, controls, or other requirements that would otherwise be applicable to that source, including requirements imposed in an applicable implementation plan; and the permit does not waive, or make less stringent, any limitations or requirements imposed in an applicable implementation plan, or that are otherwise federally enforceable.
   2. 2. All voluntarily accepted emissions limitations, controls, or other requirements will be permanent, quantifiable, and otherwise enforceable as a practical matter.
3. C. At the same time as notice of proposed issuance is first published pursuant to A.R.S. § 49-426(D), the Director shall send a copy of any Class II permit proposed to be issued pursuant to this Section to the Administrator for review during the comment period described in the notice pursuant to R18-2-330(C)(3).
4. D. The Director shall send a copy of each final permit issued pursuant to this Section to the Administrator.

Historical Note

New Section made by final rulemaking at 32 A.A.R. 55 (January 2, 2026), effective February 7, 2026 (Supp. 25-4).