Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 730 - UNDERGROUND INJECTION CONTROL OPERATING REQUIREMENTS › Subpart A - GENERAL › Section 730.103 - Definitions

Current through Register Vol. 48, No. 28, July 12, 2024
The following definitions apply to the underground injection
				  control program.
"Abandoned well" means a well whose use has been permanently
				  discontinued or that is in a state of disrepair such that it cannot be used for
				  its intended purpose or for observation purposes.
"Act" means the Solid Waste Disposal Act, as amended by the
				  Resource Conservation and Recovery Act of 1976 ( P.L. 94-580, as amended by
				  P.L. 95-609,
				  42 USC
				  6901 ).
"Administrator" means the Administrator of the U.S.
				  Environmental Protection Agency or the Administrator's designee.
"Agency" means the Illinois Environmental Protection
				  Agency.
"Application" means the Agency forms for applying for a
				  permit, including any additions, revisions, or modifications to the forms. For
				  RCRA, application also includes the information required by the Agency pursuant
				  to 35 Ill. Adm. Code
				  703.182
				  -703.188 and 703.200 (contents of Part B of the RCRA application).
"Aquifer" means a geologic formation, group of formations or
				  part of a formation that is capable of yielding a significant amount of water
				  to a well or spring.
"Area of review" means the area surrounding an "injection
				  well" described according to the criteria set forth in Section
				  730.106 or, in the
				  case of an area permit, the project area plus a circumscribing area the width
				  of which is either 402 meters (one-quarter mile) or a number calculated
				  according to the criteria set forth in Section 730.106.
"Casing" means a pipe or tubing of appropriate material, of
				  varying diameter and weight, lowered into a borehole during or after drilling
				  in order to support the sides of the hole and thus prevent the walls from
				  caving, to prevent loss of drilling mud into porous ground or to prevent water,
				  gas, or other fluid from entering or leaving the hole.
"Catastrophic collapse" means the sudden and utter failure of
				  overlying "strata" caused by removal of underlying materials.
"Cementing" means the operation whereby a cement slurry is
				  pumped into a drilled hole or forced behind the casing.
"Cesspool" means a "drywell" that receives untreated sanitary
				  waste containing human excreta and which sometimes has an open bottom or
				  perforated sides.
"Confining bed" means a body of impermeable or distinctly
				  less permeable material stratigraphically adjacent to one or more
				  aquifers.
"Confining zone" means a geologic formation, group of
				  formations, or part of a formation that is capable of limiting fluid movement
				  above an injection zone.
"Contaminant" means any physical, chemical, biological, or
				  radiological substance or matter in water.
"Conventional mine" means an open pit or underground
				  excavation for the production of minerals.
"Director" means the Director of the Illinois Environmental
				  Protection Agency or the Administrator's designee.
"Disposal well" means a well used for the disposal of waste
				  into a subsurface stratum.
"Drywell" means a well, other than an improved sinkhole or
				  subsurface fluid distribution system, that is completed above the water table
				  so that its bottom and sides are typically dry except when receiving
				  fluids.
"Environmental Protection Act" means the Environmental
				  Protection Act [ 415 ILCS 5 ].
"EPA" or "USEPA" means the United States Environmental
				  Protection Agency.
"Exempted aquifer" means an "aquifer" or its portion that
				  meets the criteria in the definition of "underground source of drinking water"
				  but which has been exempted according to the procedures of 35 Ill. Adm. Code
				  704.123,
				  704.104, and
				  702.105.
"Existing injection well" means an "injection well" other
				  than a "new injection well".
"Experimental technology" means a technology that has not
				  been proven feasible under the conditions in which it is being tested.
"Facility or activity" means any HWM facility, UIC injection
				  well, or any other facility or activity (including land or appurtenances
				  thereto) that is subject to regulation under the "State" RCRA or UIC
				  program.
"Fault" means a surface or zone of rock fracture along which
				  there has been displacement.
"Flow rate" means the volume per unit time of the flow of a
				  gas or other fluid substance that emerges from an orifice, pump or turbine or
				  which passes along a conduit or channel.
"Fluid" means material or substance that flows or moves,
				  whether in a semisolid, liquid sludge, gas, or any other form or state.
"Formation" means a body of rock characterized by a degree of
				  lithologic homogeneity that is prevailingly, but not necessarily, tabular and
				  is mappable on the earth's surface or traceable in the subsurface.
"Formation fluid" means fluid present in a formation under
				  natural conditions as opposed to introduced fluids, such as drilling
				  mud.
"Generator" means any person, by site location, whose act or
				  process produces hazardous waste identified or listed in 35 Ill. Adm. Code
				  721.
"Groundwater" means water below the land surface in a zone of
				  saturation.
"Hazardous waste" means a hazardous waste as defined in 35
				  Ill. Adm. Code
				  721.103.
"Hazardous waste management facility" or "HWM facility" means
				  all contiguous land, and structures, other appurtenances and improvements on
				  the land used for treating, storing, or disposing of hazardous waste. A
				  facility may consist of several treatment, storage, or disposal operational
				  units (for example, one or more landfills, surface impoundments, or combination
				  of them).
"HWM facility" means Hazardous waste management
				  facility.
"Illinois" means the State of Illinois.
"Improved sinkhole" means a naturally occurring karst
				  depression or other natural crevice that is found in volcanic terrain and other
				  geologic settings that have been modified by man for the purpose of directing
				  and emplacing fluids into the subsurface.
"Injection well" means a well into which fluids are being
				  injected.
"Injection zone" means a geologic formation, group of
				  formations, or part of a formation receiving fluids through a well.
"Lithology" means the description of rocks on the basis of
				  their physical and chemical characteristics.
"Owner or operator" means the owner or operator of any
				  facility or activity subject to regulation under RCRA, UIC, or the
				  Environmental Protection Act.
"Packer" means a device lowered into a well that can be
				  expanded to produce a fluid-tight seal.
"Permit" means an authorization, license, or equivalent
				  control document issued by the Agency to implement the requirements of this
				  Part and 35 Ill. Adm. Code 702 through 705. Permit does not include RCRA
				  interim status (Subpart C of 35 Ill. Adm. Code 703), UIC authorization by rule
				  (Subpart C of 35 Ill. Adm. Code 704), or any permit that has not yet been the
				  subject of final Agency action, such as a draft permit or a proposed
				  permit.
"Plugging" means the act or process of stopping the flow of
				  water, oil, or gas into or out of a formation through a borehole or well
				  penetrating that formation.
"Plugging record" means a systematic listing of permanent or
				  temporary abandonment of water, oil, gas, test, exploration, and waste
				  injection wells, and may contain a well log, description of amounts and types
				  of plugging material used, the method employed for plugging, a description of
				  formations that are sealed and a graphic log of the well showing formation
				  location, formation thickness, and location of plugging structures.
"Point of injection", for a Class V injection well, means the
				  last accessible sampling point prior to waste fluids being released into the
				  subsurface environment through the well. For example, the point of injection of
				  a Class V septic system might be the distribution box - the last accessible
				  sampling point before the waste fluids drain into the underlying soils. For a
				  dry well, it is likely to be the well bore itself.
"Pressure" means the total load or force per unit area acting
				  on a surface.
"Project" means a group of wells in a single
				  operation.
"Radioactive Waste" means any waste that contains radioactive
				  material in concentrations that exceed those listed in Table II, column 2 in
				  appendix B to 10 CFR 20 (Water Effluent Concentrations), incorporated by
				  reference in 35 Ill. Adm. Code
				  720.111.
"RCRA" means the Solid Waste Disposal Act, as amended by the
				  Resource Conservation and Recovery Act of 1976 (
				  42 USC
				  6901 et seq.).
"Sanitary waste" means liquid or solid wastes originating
				  solely from humans and human activities, such as wastes collected from toilets,
				  showers, wash basins, sinks used for cleaning domestic areas, sinks used for
				  food preparation, clothes washing operations, and sinks or washing machines
				  where food and beverage serving dishes, glasses, and utensils are cleaned.
				  Sources of these wastes may include single or multiple residences, hotels and
				  motels, restaurants, bunkhouses, schools, ranger stations, crew quarters, guard
				  stations, campgrounds, picnic grounds, day-use recreation areas, other
				  commercial facilities, and industrial facilities, provided the waste is not
				  mixed with industrial waste.
"SDWA" means the Safe Drinking Water Act (
				  42 USC
				  300(f) et seq.).
"Septic system" means a well that is used to emplace sanitary
				  waste below the surface and which is typically comprised of a septic tank and
				  subsurface fluid distribution system or disposal system.
"Site" means the land or water area where any facility or
				  activity is physically located or conducted, including adjacent land used in
				  connection with the facility or activity.
"Sole or principal source aquifer" means an aquifer that has
				  been designated by the Administrator pursuant to section 1424(a) or (e) of SDWA
				  (
				  42 USC
				  300h-3(a) or (e) ).
"State" means the State of Illinois.
"Stratum" (plural strata) means a single sedimentary bed or
				  layer, regardless of thickness, that consists of generally the same kind of
				  rock material.
"Subsidence" means the lowering of the natural land surface
				  in response to: earth movements; lowering of fluid pressure, removal of
				  underlying supporting material by mining or solution of solids, either
				  artificially or from natural causes; compaction due to wetting
				  (hydrocompaction); oxidation of organic matter in soils; or added load on the
				  land surface.
"Subsurface fluid distribution system" means an assemblage of
				  perforated pipes, drain tiles, or other similar mechanisms intended to
				  distribute fluids below the surface of the ground.
"Surface casing" means the first string of well casing to be
				  installed in the well.
"Total dissolved solids" or "TDS" means the total dissolved
				  (filterable) solids, as determined by use of the method specified in
				  40 CFR
				  136.3 (Identification of Test Procedures; the
				  method for filterable residue), incorporated by reference in 35 Ill. Adm. Code
				  720.111.
"UIC" means the Underground Injection Control program under
				  Part C of the Safe Drinking Water Act (
				  42 USC
				  300h through
				  300h-8
				  ), including the approved Illinois program.
"Underground injection" means a "well injection".
"Underground source of drinking water" or "USDW" means an
				  aquifer or its portion is not an exempted aquifer, as defined in this Section,
				  and of which the following is true:
It supplies any public water system; or
It contains a sufficient quantity of groundwater to supply a
				  public water system; and
It currently supplies drinking water for human consumption;
				  or
It contains less than 10,000 mg/l total dissolved
				  solids.
"USDW" means underground source of drinking water.
"Well" means a bored, drilled, or driven shaft whose depth is
				  greater than the largest surface dimension; a dug hole whose depth is greater
				  than the largest surface dimension; an improved sinkhole; or a subsurface fluid
				  distribution system.
"Well injection" means the subsurface emplacement of fluids
				  through a well.
"Well monitoring" means the measurement, by on-site
				  instruments or laboratory methods, of the quality of water in a well.
"Well plug" means a watertight and gastight seal installed in
				  a borehole or well to prevent movement of fluids.
"Well stimulation" means several processes used to clean the
				  well bore, enlarge channels, and increase pore space in the interval to be
				  injected, thus making it possible for wastewater to move more readily into the
				  formation, and includes surging, jetting, blasting, acidizing, and hydraulic
				  fracturing.
BOARD NOTE: Derived from
					 40
					 CFR 146.3
					 (2017).