Alabama Administrative Code › Title 335 - ALABAMA DEPARTMENT OF ENVIRONMENTAL MANAGEMENT › WATER DIVISION - WATER QUALITY PROGRAM › Chapter 335-6-8 - UNDERGROUND INJECTION CONTROL › Section 335-6-8-.02 - Definitions

Current through Register Vol. 42, No. 9, June 28, 2024
Whenever used in this Chapter, unless a different meaning
				  clearly appears from the context or unless a different meaning is stated in a
				  definition applicable to only a portion of this Chapter, the following
				  definitions shall apply:
(a)
				"Abandoned well" means an injection well into which the injection has been
				terminated or a well in such a state of disrepair as to be unusable. A
				temporary abandonment shall be when injection has ceased but is expected to
				resume within one year. A permanent abandonment shall be when injection has
				ceased and no future injection is planned or when no injection has taken place
				for a period of one year or more.
(b) "Administrator" means the Administrator
				of the United States Environmental Protection Agency (EPA) or an authorized
				representative.
(c) "Area of
				review" means the area around an injection well or well field in which
				migration of injected fluids and/or pollutants or formation fluids into an
				Underground Source of Drinking Water (USDW) may occur.
(d) "Area of Review Corrective Action" means
				the use of Department-approved methods to ensure that wells within the area of
				review do not serve as conduits for the movement of fluids into underground
				sources of drinking water (USDW).
(e) "Aquiclude" means a formation that stores
				water, but does not transmit significant quantities of water, and which is
				often referred to as a confining interval.
(f) "Aquifer" means a geological formation,
				group of formations or part of a formation that is capable of yielding a
				significant amount of water to a well or spring.
(g) "Aquifer Storage and Recovery (ASR) Well"
				means an injection well used for the injection of treated municipal wastewater,
				groundwater or surface water, treated or untreated, for the purpose of storage
				in a designated aquifer and recovery at a later time for a beneficial
				use.
(h) "Best Management
				Practices" ("BMP's") means schedules of activities, prohibitions of practices,
				maintenance procedures, and other management practices to prevent or reduce the
				pollution of waters of the state. BMP's also include treatment requirements,
				operating procedures, and practices to control site runoff, spillage or leaks,
				sludge or waste disposal, or drainage from raw material storage.
(i) "Blow-out Preventer" means a mechanical
				device used to keep pressurized fluids in a well from leaving the well head,
				while allowing access to the well casing by drilling tools and well-logging
				tools.
(j) "Bypass" means the
				intentional diversion of waste streams from any portion of a waste treatment
				facility.
(k) "Carbon Dioxide
				Plume" means the extent underground, in three dimensions, of an injected carbon
				dioxide stream.
(l) "Carbon Dioxide
				Stream" means carbon dioxide that has been captured from an emission source
				(e.g., a power plant), plus incidental associated substances derived from the
				source materials and the capture process, and any substances added to the
				stream to enable or improve the injection process. This subpart does not apply
				to any carbon dioxide stream that meets the definition of a hazardous waste
				under 40 CFR part 261.
(m) "Casing"
				means a heavy pipe or tubing which is lowered into a borehole, during or after
				drilling in order to support the sides of a hole and prevent caving; to prevent
				loss of drilling mud into porous formations; or to prevent water, gas or other
				fluid from entering or leaving the hole.
(n) "Cementing" means the operation where a
				cement slurry is placed into a borehole and/or forced behind a casing or
				between casings.
(o) "Cesspool"
				means a drywell that receives untreated sanitary waste containing human
				excreta, and which sometimes has an open bottom and/or perforated
				sides.
(p) "Class I Well" means an
				injection well used to inject a fluid and/or pollutant beneath the lowermost
				formation which contains an underground source of drinking water within five
				miles of the borehole. This definition excludes Aquifer Storage and Recovery
				Wells as defined in paragraph
				335-6-8-.02(g).
(q) "Class II Well" means an injection well
				which is used:
1. To inject brine or other
				fluids which are brought to the surface in connection with oil or natural gas
				production and which may be commingled with waste waters from gas plants which
				are an integral part of production operations, unless those waters are
				classified as a hazardous waste at the time of injection;
2. For enhanced recovery of oil or natural
				gas; or
3. For storage of
				hydrocarbons which are liquid at standard temperature and pressure.