A series of openings in a casing, made either before or after installation of the casing, to permit the entrance of water into the well. A.A.C. R12-15-801(19).

This is a well that is designed and drilled for the purpose of monitoring water levels within a specific depth interval. A.A.C. R12-15-801(20).

A commercially manufactured watertight unit or device designed for attachment to a steel well casing which permits discharge from the well below the land surface and allows access into the well casing while preventing contaminants from entering the well. A.A.C. R12-15-801(21). For more information, please view this diagram of a pitless adaptor.

Water whose chemical, physical, biological, or radiological integrity has been degraded through the artificial or natural infusion of chemicals, radionuclides, heat, biological organisms, or mineralogical or other extraneous matter. A.A.C. R12-15-801(22).

Poor quality groundwater withdrawal permits are permits issued pursuant to A.R.S. § 45-516 to non-irrigation users to withdraw poor quality groundwater if the director determines that the groundwater to be withdrawn because of its quality has no other beneficial use at the present time and that the withdrawal of such groundwater is consistent with the management plan.  A.R.S. § 45-516. 

Either: a) A large-scale metal mining and processing facility that does not qualify as a pre-1985 metal mining facility, including any expanded or modified portion of the facility, or b) Any expanded or modified portion of a pre-1985 metal mining facility if the expansion or modification includes one or more new tailings impoundments, new mill circuits, or new leaching facilities, and was not substantially commenced as of December 31, 1984.

A water-intensive landscaped area or a low water use landscaped area that was neither in existence nor was substantially commenced as of December 31, 1991.

A water-intensive landscaped area or a low water use landscaped area that was either in existence or was substantially commenced as of December 31, 1984.

A process by which a grout is confined within the borehole or casing of a well by the use of retaining plugs, packers, or a displacing fluid by which sufficient pressure is applied to drive the grout into and within the annular space or interval to be grouted. A.A.C. R12-15-801(23).