Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 620 - GROUNDWATER QUALITY › Subpart A - GENERAL › Section 620.110 - Definitions

Current through Register Vol. 48, No. 28, July 12, 2024
The definitions of the Environmental Protection Act [415 ILCS
				  5 ] and the Groundwater Protection Act [415 ILCS 55 ] apply to this Part. The
				  following definitions also apply to this Part.
"Act" means the Environmental Protection Act [415 ILCS
				  5].
"Agency" means the Illinois Environmental Protection
				  Agency.
"Aquifer" means saturated (with groundwater) soils and
				  geologic materials which are sufficiently permeable to readily yield
				  economically useful quantities of water to wells, springs, or streams under
				  ordinary hydraulic gradients. [415 ILCS
				  55/3(b) ]
"BETX" means the sum of the concentrations of benzene,
				  ethylbenzene, toluene, and xylenes.
"Board" means the Illinois Pollution Control Board.
"Carcinogen" means a contaminant that is classified as a
				  Category A1 or A2 Carcinogen by the American Conference of Governmental
				  Industrial Hygienists; or a Category 1 or 2A/2B carcinogen by the World Health
				  Organization's International Agency for Research on Cancer; or a "Human
				  carcinogen" or "Anticipated Human Carcinogen" by the United States Department
				  of Health and Human Service National Toxicological Program; or a Category A or
				  B1/B2 Carcinogen by the United States Environmental Protection Agency in
				  Integrated Risk Information System or a Final Rule issued in a Federal Register
				  notice by the USEPA. [415 ILCS
				  5/58.2 ]
"Community water supply" means a public supply which serves
				  or is intended to serve at least 15 service connections used by residents or
				  regularly serves at least 25 residents. [415 ILCS
				  5/3.145 ]
"Contaminant" means any solid, liquid, or gaseous matter, any
				  odor, or any form of energy, from whatever source. [415 ILCS
				  5/3.165 ]
"Corrective action process" means those procedures and
				  practices that may be imposed by a regulatory agency when a determination has
				  been made that contamination of groundwater has taken place, and are necessary
				  to address a potential or existing violation of the standards set forth in
				  Subpart D.
"Cumulative impact area" means the area, including the coal
				  mine area permitted under the Surface Coal Mining Land Conservation and
				  Reclamation Act [225 ILCS 720 ] and 62 Ill. Adm. Code 1700 through 1850, within
				  which impacts resulting from the proposed operation may interact with the
				  impacts of all anticipated mining on surface water and groundwater
				  systems.
"Department" means the Illinois Department of Natural
				  Resources.
"Detection" means the identification of a contaminant in a
				  sample at a value equal to or greater than the:
"Method Detection Limit" or "MDL" means the minimum
				  concentration of a substance that can be measured as reported with 99 percent
				  confidence that the true value is greater than zero, pursuant to 40 CFR 136,
				  appendix B (2006), incorporated by reference at Section
				  620.125;
				  or
"Method Quantitation Limit" or "MQL" means the minimum
				  concentration of a substance that can be measured and reported pursuant to
				  "Test Methods for Evaluating Solid Wastes, Physical/Chemical Methods",
				  incorporated by reference at Section 620.125.
"Groundwater" means underground water which occurs within the
				  saturated zone and geologic materials where the fluid pressure in the pore
				  space is equal to or greater than atmospheric pressure. [415 ILCS 5/3.210
				  ]
"Hydrologic balance" means the relationship between the
				  quality and quantity of water inflow to, water outflow from, and water storage
				  in a hydrologic unit such as a drainage basin, aquifer, soil zone, lake, or
				  reservoir. It encompasses the dynamic relationships among precipitation,
				  runoff, evaporation, and changes in ground and surface water storage.
"IGPA" means the Illinois Groundwater Protection Act [415
				  ILCS 55 ].
"LOAEL" or "Lowest observable adverse effect level" means the
				  lowest tested concentration of a chemical or substance that produces a
				  statistically significant increase in frequency or severity of non-overt
				  adverse effects between the exposed population and its appropriate control.
				  LOAEL may be determined for a human population (LOAEL-H) or an animal
				  population (LOAEL-A).
"Licensed Professional Engineer" or "LPE" means a person,
				  corporation, or partnership licensed under the laws of the State of Illinois to
				  practice professional engineering. [415 ILCS
				  5/57.2 ]
"Licensed Professional Geologist" or "LPG" means an
				  individual who is licensed under the Professional Geologist Licensing Act to
				  engage in the practice of professional geology in Illinois. [225
				  ILCS 745/15 ]
"NOAEL" or "No observable adverse effect level" means the
				  highest tested concentration of a chemical or substance that does not produce a
				  statistically significant increase in frequency or severity of non-overt
				  adverse effects between the exposed population and its appropriate control.
				  NOAEL may be determined for a human population (NOAEL-H) or an animal
				  population (NOAEL-A).
"Non-community water supply" means a public water supply that
				  is not a community water supply. [415 ILCS
				  5/3.145 ]
"Off-site" means not on-site.
"On-site" means on the same or geographically contiguous
				  property that may be divided by public or private right-of-way, provided the
				  entrance and exit between properties is at a crossroads intersection and access
				  is by crossing as opposed to going along the right-of-way. Noncontiguous
				  properties owned by the same person but connected by a right-of-way that he
				  controls and that the public does not have access to is also considered on-site
				  property.
"Operator" means the person responsible for the operation of
				  a site, facility or unit.
"Owner" means the person who owns a site, facility or unit or
				  part of a site, facility or unit, or who owns the land on which the site,
				  facility or unit is located.
"Potable" means generally fit for human consumption in
				  accordance with accepted water supply principles and practices. [415
				  ILCS 5/3.340 ]
"Potential primary source" means any unit at a facility or
				  site not currently subject to a removal or remedial action which:
Is utilized for the treatment, storage, or disposal of any
				  hazardous or special waste not generated at the site; or
Is utilized for the disposal of municipal waste not generated
				  at the site, other than landscape waste and construction and demolition debris;
				  or
Is utilized for the landfilling, land treating, surface
				  impounding or piling of any hazardous or special waste that is generated on the
				  site or at other sites owned, controlled or operated by the same person;
				  or
Stores or accumulates at any time more than 75,000 pounds
				  above ground, or more than 7,500 pounds below ground, of any hazardous
				  substances. [415 ILCS
				  5/3.345 ]
"Potential route" means abandoned and improperly plugged
				  wells of all kinds, drainage wells, all injection wells, including closed loop
				  heat pump wells, and any excavation for the discovery, development or
				  production of stone, sand or gravel.This term does not include closed loop heat
				  pump wells using USP (U.S. Pharmacopeia) food grade propylene glycol.
				  [415 ILCS 5/3.350
				  ]
"Potential secondary source" means any unit at a facility or
				  a site not currently subject to a removal or remedial action, other than a
				  potential primary source, which:
Is utilized for the landfilling, land treating, or surface
				  impounding of waste that is generated on the site or at other sites owned,
				  controlled or operated by the same person, other than livestock and landscape
				  waste, and construction and demolition debris; or
Stores or accumulates at any time more than 25,000 but not
				  more than 75,000 pounds above ground, or more than 2,500 but not more than
				  7,500 pounds below ground, of any hazardous substance; or
Stores or accumulates at any time more than 25,000 gallons
				  above ground, or more than 500 gallons below ground, of petroleum, including
				  crude oil or any fraction thereof which is not otherwise specifically listed or
				  designated as a hazardous substance; or
Stores or accumulates pesticides, fertilizers, or road oils
				  for purposes of commercial application or for distribution to retail sales
				  outlets; or
Stores or accumulates at any time more than 50,000 pounds of
				  any de-icing agent; or
Is utilized for handling livestock waste or for treating
				  domestic wastewaters other than private sewage disposal systems as defined in
				  the Private Sewage Disposal Licensing Act [225 ILCS 225 ]. [415 ILCS
				  5/3.355 ]
"Practical Quantitation Limit" or "PQL" means the lowest
				  concentration or level that can be reliably measured within specified limits of
				  precision and accuracy during routine laboratory operating conditions in
				  accordance with "Test Methods for Evaluating Solid Wastes, Physical/Chemical
				  Methods", EPA Publication No. SW-846, incorporated by reference at Section
				  620.125.
"Previously mined area" means land disturbed or affected by
				  coal mining operations prior to February 1, 1983.
BOARD NOTE: February 1, 1983, is the effective date of the
				  Illinois permanent program regulations implementing the Surface Coal Mining
				  Land Conservation and Reclamation Act [225 ILCS 720] as codified in 62 Ill.
				  Adm. Code 1700 through 1850.
"Property class" means the class assigned by a tax assessor
				  to real property for purposes of real estate taxes.
BOARD NOTE: The property class (rural property, residential
				  vacant land, residential with dwelling, commercial residence, commercial
				  business, commercial office, or industrial) is identified on the property
				  record card maintained by the tax assessor in accordance with the Illinois Real
				  Property Appraisal Manual (February 1987), published by the Illinois Department
				  of Revenue, Property Tax Administration Bureau.
"Public water supply" means all mains, pipes and structures
				  through which water is obtained and distributed to the public, including wells
				  and well structures, intakes and cribs, pumping stations, treatment plants,
				  reservoirs, storage tanks and appurtenances, collectively or severally,
				  actually used or intended for use for the purpose of furnishing water for
				  drinking or general domestic use and which serve at least 15 service
				  connections or which regularly serve at least 25 persons at least 60 days per
				  year. A public water supply is either a "community water supply" or a
				  "non-community water supply". [415 ILCS
				  5/3.365 ]
"Regulated entity" means a facility or unit regulated for
				  groundwater protection by any State or federal agency.
"Regulatory agency" means the Illinois Environmental
				  Protection Agency, Department of Public Health, Department of Agriculture, the
				  Office of Mines and Minerals in the Department of Natural Resources, and the
				  Office of State Fire Marshal.
"Regulated recharge area" means a compact geographic area, as
				  determined by the Board pursuant to Section 17.4 of the Act, the geology of
				  which renders a potable resource groundwater particularly susceptible to
				  contamination. [415 ILCS
				  5/3.390 ]
"Resource groundwater" means groundwater that is presently
				  being, or in the future is capable of being, put to beneficial use by reason of
				  being of suitable quality. [415 ILCS
				  5/3.430 ]
"Saturated zone" means a subsurface zone in which all the
				  interstices or voids are filled with water under pressure greater than that of
				  the atmosphere.
"Setback zone" means a geographic area, designated pursuant
				  to this Act, containing a potable water supply well or a potential source or
				  potential route having a continuous boundary, and within which certain
				  prohibitions or regulations are applicable in order to protect groundwaters.
				  [415 ILCS 5/3.450
				  ]
"Site" means any location, place, tract of land and
				  facilities, including but not limited to, buildings and improvements used for
				  the purposes subject to regulation or control by the Act or regulations
				  thereunder. [415 ILCS 5/3.460 ]
"Spring" means a natural surface discharge of an aquifer from
				  rock or soil.
"Threshold dose" means the lowest dose of a chemical at which
				  a specified measurable effect is observed and below which it is not
				  observed.
"Treatment" means the technology, treatment techniques, or
				  other procedures for compliance with 35 Ill. Adm. Code, Subtitle F.
"Unit" means any device, mechanism, equipment, or area
				  (exclusive of land utilized only for agricultural production). [415 ILCS
				  5/3.515 ]
"USEPA" means the United States Environmental Protection
				  Agency.
"Wellhead protection area" or "WHPA" means the surface and
				  subsurface recharge area surrounding a community water supply well or well
				  field, delineated outside of any applicable setback zones (pursuant to Section
				  17.1 of the Act [415 ILCS 5/17.1 ]), and pursuant
				  to Illinois' Wellhead Protection Program, through which contaminants are
				  reasonably likely to move toward such well or well field.
"Wellhead Protection Program" or "WHPP" means the wellhead
				  protection program for the State of Illinois, approved by USEPA under
				  42 USC
				  300h-7.
BOARD NOTE: Derived from
				  40 CFR
				  141.71(b) (2003). The
				  wellhead protection program includes the "groundwater protection needs
				  assessment" under Section 17.1 of the Act [415 ILCS 5/17.1] and 35 Ill. Adm.
				  Code 615-617.