Abbreviation for Arizona Administrative Code.

Abbreviation for Arizona Revised Statutes.

Abandoned tailings impoundment means a tailings impoundment that the owner/operator of a metal mining facility does not plan to use for additional disposal of tailings.

Well abandonment is accomplished “through filling or sealing the well so as to prevent the well, including the annular space outside the casing, from being a channel allowing the vertical movement of water.” A.A.C. R12-15-816(G). Wells that are capped and not in use are not considered abandoned.

The volume of water required to cover 1 acre to a depth of 1 foot and is equal to 43,560 cubic feet or 325,851 gallons. In Arizona, 1 acre-foot is typically enough water to serve 3 single-family homes for a year.

This is a geographical area which has been designated pursuant to [A.R.S. Title 45, Chapter 2, Article 2] as requiring active management of groundwater or, in the case of the Santa Cruz Active Management Area, active management of any water, other than stored water, withdrawn from a well. A.R.S. § 45-402(2). Established Active Management Areas (AMAs) include: The Phoenix, Pinal, Prescott, Tucson, and Santa Cruz AMAs. A map of the AMAs and their boundaries can be viewed here. Wells drilled in AMAs are subject to stricter regulations. 

The space between the outer well casing and the borehole wall. Also means the space between the inner and outer well casing. A.A.C. R12-15-801(1).

(1) Recharge - Aquifer definition since it is specific to the Recharge Program. It should read: "Aquifer" means a geologic formation that contains sufficient saturated material to be capable of storing water and transmitting water in usable quantities to a well, pursuant to A.R.S. 45-802.01.

(2) Permitting and Wells - An underground formation capable of yielding or transmitting usable quantities of water. A.A.C. R12-15-801(2).

"Area of impact" means, as projected on the land surface, the area where the stored water has migrated or is located.

An aquifer which is overlain by a confining formation and which contains groundwater under sufficient
pressure for the water to rise above the top of the aquifer. A.A.C. R12-15-801(3).

The irrigation efficiency used to compute an irrigation water duty for the fourth management period pursuant to A.R.S. §§ 45-567 and 45-567.02. 

Augmentation means supplementing the water supply of an active management area and may include the importation of water into the active management area or storage of water pursuant to laws relating to underground water storage set forth at A.R.S. § 45-801.01 et seq.