Ariz. Admin. Code § 12-15-851
A well owner who has been issued a drilling card for a notice of intent to drill authorizing the drilling of a well located within a site listed on the registry established under A.R.S. § 49-287.01, shall provide written notice to the Director indicating the date drilling will commence. The well owner shall coordinate with the contracted well driller to ensure that the Department receives proper notification under this Section. This notification shall consist of a letter or facsimile transmission received by the Department at least 2 business days before drilling commences at the well site. The Department shall use notification letters required by R12-15-850(A) to inform well owners whether they are subject to the requirements of this Section.
Ariz. Admin. Code § R12-15-851