Illinois Administrative Code › Title 41 - FIRE PROTECTION › Part 174 - GENERAL REQUIREMENTS FOR UNDERGROUND STORAGE TANKS AND THE STORAGE, TRANSPORTATION, SALE AND USE OF PETROLEUM AND OTHER REGULATED SUBSTANCES › Subpart A - DEFINITIONS › Section 174.100 - Definitions

Current through Register Vol. 48, No. 28, July 12, 2024
The following definitions shall apply to 41 Ill. Adm. Code
				  172, 174, 175, 176 and 177 concerning underground storage tanks and tank
				  systems and the storage, transportation, sale and use of petroleum and other
				  regulated substances.
"Abandonment-in-place" is the permanent placement of a UST in
				  an inoperative condition by filling it with inert material in accordance with
				  41 Ill. Adm. Code 175.840.
"Airport Hydrant Fuel Distribution System" or "Airport
				  Hydrant System" means a UST system that fuels aircraft and operates under high
				  pressure with large diameter piping that typically terminates into one or more
				  hydrants (fill stands). An airport hydrant system may have one or more of the
				  following connected together: aboveground tanks, underground tanks, underground
				  piping, field constructed tanks, or factory constructed tanks. The airport
				  hydrant system begins where fuel enters one or more tanks from an external
				  source such as a pipeline, barge, rail car, or other motor fuel carrier.
"Air Test" or "Air Tested" means a type of integrity test
				  used to demonstrate tightness in a UST or associated piping at installations
				  and upgrades. An air test can only be used when all sides of the tank and/or
				  piping being tested are visible. Test procedures will be performed in
				  accordance with manufacturer's specifications or PEI/RP 100 Recommended
				  Practices for Installation of Underground Liquid Storage Systems, incorporated
				  by reference in Section
				  174.210.
"American Suction" is any suction system other than
				  European.
"Ancillary Equipment" means any devices including, but not
				  limited to, piping, fittings, flanges, valves, pumps, dispensers, line leak
				  detection equipment, automatic tank gauge (ATG) probes, interstitial tank
				  sensors, sump sensors, flex connectors, and automatic overfill prevention
				  devices used to distribute, meter or control the flow of regulated substances
				  to and from a UST.
"ANSI" means American National Standards Institute.
"API" means American Petroleum Institute.
"ASTM" means American Society for Testing and
				  Materials.
"Attendant" means the owner or any person who is employed by
				  an owner of a motor fuel dispensing facility to dispense motor fuel at that
				  facility.
"Blended Fuel" means gasoline containing greater than 10%
				  ethanol and petroleum diesel containing greater than 20% biodiesel.
"Building" means any three dimensional space that is enclosed
				  by a roof and walls where more than 50% of the possible area of the perimeter
				  walls (sides) of the space is covered and not open to the outside.
"Bulk Storage" means the containment in a UST of a regulated
				  substance for purposes of the bulk transfer or bulk transport of regulated
				  substances and not for retail sale to the public.
"Bunker Tank" means a commercial heating oil or emergency
				  power generator tank situated below grade, in a basement, on a floor, and
				  enclosed in a masonry wall structure, with the tank completely or partially
				  covered by sand, or otherwise not fully accessible to inspection.
"Cathodic Protection" is a technique to prevent corrosion of
				  a metal surface by making that surface the cathode of an electrochemical cell.
				  For example, a tank system can be cathodically protected through the
				  application of either galvanic anodes or impressed current.
"Certification Audit Inspection" or "Operational Maintenance
				  Inspection" or "OMI" or "Certification Audit" means an inspection performed by
				  an STSS to establish a facility's regulatory compliance.
"Class I Liquids" - See Flammable Liquids.
"Class II and III Liquids" - See Combustible Liquids.
"Combustible Liquids" are defined in NFPA 30 as Class II,
				  IIIa and IIIb liquids.
"Compatible" means the ability of two or more substances to
				  maintain their respective physical and chemical properties upon contact with
				  one another for the design life of the tank system under conditions likely to
				  be encountered in the UST.
"Containment Sump" means a factory manufactured liquid-tight
				  container that protects the environment by containing leaks and spills of
				  regulated substances at the tank fill or from piping, dispensers, pumps and
				  related components in the containment area. Containment sumps may be
				  single-walled or secondarily contained and located at the top of the tank (tank
				  top or submersible turbine pump), underneath the dispenser (under-dispenser
				  containment sump), or at other points in the piping run (transition or
				  intermediate sump). Containment sumps must be compatible with the substance
				  conveyed by the piping and allow for visual inspection and access to the
				  components.
"Contractor" or "Licensed Contractor" or "OSFM-Licensed
				  Contractor" or "Petroleum Equipment Contractor" is a person licensed under the
				  Petroleum Equipment Contractor's Licensing Act [225 ILCS 729
				  ], excluding employees of the contractor, who performs any UST activity for an
				  owner or operator.
"Corrosion Expert" is a person who, by reason of thorough
				  knowledge of the physical sciences and the principles of engineering and
				  mathematics acquired by a professional education and related practical
				  experience, is qualified to engage in the practice of corrosion control on
				  buried or submerged metal piping systems and metal tanks. This person shall be
				  accredited as being qualified by the National Association of Corrosion
				  Engineers (NACE) or be an Illinois Licensed Professional Engineer who has
				  certification or licensing that includes education and experience in corrosion
				  control of buried or submerged metal piping systems and metal tanks.
"Days" means calendar days unless otherwise stated.
"Decommission" or "Decommissioning" means to permanently
				  close the UST by removal or abandonment-in-place pursuant to 41 Ill. Adm. Code
				  175.830 and 175.840, and using a
				  contractor that is OSFM-licensed in the decommissioning module pursuant to 41
				  Ill. Adm. Code 172.
"Dielectric Material" is a material that does not conduct
				  direct electric current. Dielectric coatings are used to electrically isolate
				  USTs from the surrounding soil. Dielectric bushings are used to electrically
				  isolate portions of the UST (i.e., tank from piping).
"Dispenser" means equipment located above ground that
				  dispenses regulated substances from the UST system.
"Dispenser System" means the dispenser and the equipment
				  necessary to connect the dispenser to the underground storage tank
				  system.
"Dispensing" means the transfer of a regulated substance from
				  a UST directly into the fuel tank of a motor vehicle operated by an internal
				  combustion engine, for use by that motor vehicle. Also, "dispensing" is the
				  transfer of a regulated substance from a UST directly into a portable
				  container, safety can or portable fuel tank.
"Double-walled", in reference to underground storage tank
				  systems, is a factory certified container consisting of an inner wall and an
				  outer wall with an interstitial space between the inner wall and outer wall
				  suitable for interstitial monitoring, and is designed, constructed and
				  installed to:
contain regulated substances released from the tank system
				  until they are detected and removed;
prevent the release of regulated substances to the
				  environment at any time during the operational life of the UST; and
be checked at least every 30 days.
A field-installed liner or insert does not qualify as
				  double-walled.
"DPCS" means the Division of Petroleum and Chemical Safety of
				  the Office of the State Fire Marshal.
"Dual Purpose UST" or "Multi-purpose UST" is an underground
				  storage tank system in compliance with the requirements of Sections
				  174.310 and
				  174.320 and 41 Ill. Adm. Code
				  160, 172, 174, 175, 176, 177 and 180 and is connected to one or more dispensers
				  and a bulk load-out at the same time.
"Emergency Stop" or "Emergency Shutoff Switch" or "E-stop"
				  means a device or switch that, when activated, will disconnect power to all
				  dispensing devices, to all remote pumps serving the dispensing devices, to all
				  associated power, control and signal circuits, and to other electrical
				  equipment in the hazardous (classified) locations surrounding the fuel
				  dispensing devices, but not including intrinsically safe electrical
				  equipment.
"European Suction" is a piping system that draws a liquid
				  through the system by suction pump or vacuum pump located at the dispenser. To
				  qualify as European suction, the system shall meet the requirements set forth
				  in 40 CFR
				  280.41(b)(1)(ii)(A) through
				  (E) and
				  41 Ill. Adm. Code
				  175.640(b)(2)(A) through
				  (E).
"Excavation Zone" is the cubic area containing the tank
				  system and backfill material, bounded by the ground surface, walls and floor of
				  the pit and trenches into which the UST is placed at the time of installation,
				  upgrade, tank entry, or decommissioning.
"Exclusion Zone" means an area where entry is forbidden
				  without possession of the cards required under 41 Ill. Adm. Code
				  172.60 and is typically marked
				  using a fence or caution tape.
"Farm" or "Agricultural Site" is a tract of land devoted to
				  the production of crops or raising of animals, including fish. "Farm" includes
				  all contiguous land and structures and other appurtenances and improvements;
				  also, fish hatcheries, rangeland and nurseries with growing operations. "Farm"
				  does not include agribusiness (as defined in
				  20 ILCS
				  3501/801-10(z) ), laboratories where
				  animals are raised, land used to grow timber, and pesticide aviation
				  operations. Moreover, this definition does not include retail stores or garden
				  centers where nursery farm products are marketed, but not grown.
"Farm Tank" means a motor fuel UST located on a farm and used
				  exclusively for farm purposes.
"Field-Constructed Tank" means a tank constructed in the
				  field. For example, a tank constructed of concrete that is poured in the field,
				  or a steel or fiberglass tank primarily fabricated in the field, is considered
				  field-constructed.
"Flammable Liquids" are defined in NFPA 30, and are divided
				  into Class Ia, Ib and Ic liquids.
"Flow-through Process Tank" is a tank that forms an integral
				  part of a production process through which there is a steady, variable,
				  recurring or intermittent flow of materials during the operation of the
				  process. Flow-through process tanks do not include tanks used for the storage
				  of materials prior to their introduction to the process or for the storage of
				  finished products or by-products from the production process. When the process
				  is shut down, flow-through process tanks do not store product to be used once
				  the process is resumed and may contain no more than a de minimis amount of
				  product.
"Gathering Lines" are any pipeline, equipment, facility or
				  building used in the transportation of oil or gas during oil or gas production
				  or gathering operations.
"Green Decal" means the evidence of compliance status that is
				  issued to a UST facility determined by OSFM to be in compliance following a
				  certification audit inspection in accordance with 41 Ill. Adm. Code 177.
"Hazardous Substance" means any substance defined in section
				  101(14) of the Comprehensive Environmental Response, Compensation and Liability
				  Act (CERCLA) (42 U.S.C.
				  9601(14)), but does not
				  include any substance regulated as a hazardous waste under subtitle C of the
				  Resource Conservation and Recovery Act of 1976 (RCRA) (42 U.S.C.
				  6901 et seq.) or any mixture of those
				  substances and petroleum.
"Hazardous Substance UST" means an underground storage tank
				  system that contains a hazardous substance or any mixture of those substances
				  and petroleum and that is not a petroleum UST.
"Hearing Officer" means the presiding official designated by
				  the OSFM to conduct a hearing and preside over pre-hearing and post-hearing
				  matters in a contested case.
"Heating Oil" means petroleum that is No. 1, No. 2, No.
				  4-light, No. 4-heavy, No. 5-light, No. 5-heavy or No. 6 technical grades of
				  fuel oil; other residual fuel oils (including Navy Special Fuel Oil and Bunker
				  C) and other fuels when used as substitutes for one of these fuel oils. Heating
				  oil is typically used in the operation of heating equipment, boilers or
				  furnaces.
"Heating Oil Tank for Consumptive Use on the Premises Where
				  Stored" means heating oil consumed exclusively on the same or contiguous
				  property where the heating oil UST is located, for heating purposes. Thus,
				  centralized heating units using heating oil that serve more than one building
				  on the same property are included. It does not include using heating oil to
				  heat from a boiler or furnace, through direct conductivity, any product or
				  substance used in a manufacturing or production process or using heating oil as
				  an ingredient in a manufacturing or production process. Heating oil used to
				  heat grain dryers or kilns is used for consumptive use on the premises.
"Hot Work" means operations or work on a UST capable of
				  providing a source of ignition, such as drilling, welding, cutting, burning or
				  heating.
"Hydraulic Lift Tank" means a tank holding hydraulic fluid
				  for a closed loop mechanical system that uses compressed air or hydraulic fluid
				  to operate lifts, elevators or other similar devices.
"ICC" means International Code Council.
"IEMA" means the Illinois Emergency Management Agency.
"Interior Lining" or "Internal Lining" means corrosion and
				  chemical resistant materials that are sprayed, brushed or applied to the inside
				  of a tank to protect the tank and its product from contamination by corrosion
				  or to ensure that the inside of the tank is compatible with the product stored.
				  Interior lining is applied by a contractor licensed by OSFM in both the lining
				  and decommissioning modules.
"Interstitial Monitoring" is a release detection method used
				  to determine the presence of a regulated substance between the inner and outer
				  barriers of a double-walled or secondary containment system of an underground
				  tank and/or piping system and is designed, constructed and installed to detect
				  a leak from any portion of the tank or piping that routinely contains product
				  and meets any other applicable requirements of 41 Ill. Adm. Code
				  175.630(f) and
				  40 CFR
				  280.43(g).
"Intrinsically Safe Electrical Equipment" means equipment and
				  wiring that is incapable of releasing sufficient electrical or thermal energy
				  under normal or abnormal conditions to cause ignition of a specific hazardous
				  atmospheric mixture in its most easily ignited concentration.
"Kerosene" is a refined petroleum distillate consisting of a
				  homogeneous mixture of hydrocarbons essentially free of water, inorganic,
				  acidic or basic compounds, and excessive amounts of particulate contaminants.
				  Two classifications exist as follows:
No. 1-K (also known as "K-1") - A special low-sulfur grade
				  kerosene suitable for use in non-flue connected kerosene burner appliances and
				  for use in wick-fed illuminating lamps; and
No. 2-K (also known as "K-2") - A regular grade kerosene
				  suitable for use only in flue connected burner appliances and for use in
				  wick-fed illuminating lamps.
"Liquid Traps or Associated Gathering Lines Directly Related
				  to Oil or Gas Production or Gathering Operations" refers to sumps, well cellars
				  or other traps, used in association with oil or gas production, gathering or
				  extraction operations (including gas production plants), for the purpose of
				  collecting oil, water or other liquids. Liquid traps may temporarily collect
				  liquids for subsequent disposition or reinjection into a production or pipeline
				  stream or may collect and separate liquids from a gas stream.
"Liquefied Petroleum Gas" or "LP Gas"
means any
				  material which is composed predominately of any of the following hydrocarbons
				  or mixtures of the same: propane, propylene, butanes (normal butane and
				  iso-butane) and butylenes.
[430 ILCS 10/2
				  ].
"Listed" or "Third Party Listed" means equipment, materials
				  or services included in a list specifying the intended use and that has been
				  published by a third party organization that:
is acceptable to OSFM and concerned with evaluation of
				  products or services;
maintains periodic inspection of production of listed
				  equipment or materials or periodic evaluation of services; and
for each listing states that either the equipment, material
				  or service meets appropriate designated standards or has been tested and found
				  suitable for its intended use.
"Maintenance" means normal operational upkeep to prevent a
				  UST from releasing product.
"Module" is a type of OSFM licensure and includes the
				  following types of UST activity:
Installation/retrofitting of USTs;
Decommissioning of USTs;
Inspection and lining of USTs;
Precision testing;
Inspection and testing of UST equipment; and
Cathodic protection.
"Motor Fuel" means a complex blend of hydrocarbons typically
				  used in the operation of a motor engine, such as motor gasoline, aviation
				  gasoline, No. 1 or No. 2 diesel fuel, or any blend containing one or more of
				  these substances (for example, motor gasoline blended with alcohol).
"Motor Fuel Dispensing Facility" means that portion of a
				  property where motor fuels are stored and dispensed from a UST, using fixed
				  equipment, into the fuel tanks of motor vehicles or marine craft, or into
				  approved containers, including all equipment used in connection with that
				  storage and dispensing. The term "motor fuel dispensing facility" includes the
				  locations of emergency stops and fueling observation points, and all buildings
				  involved with dispensing activities. Motor fuel dispensing facilities may take
				  the following forms:
"Attended Self-Service Motor Fuel Dispensing Facility" means
				  a motor fuel dispensing facility that has an attendant or employee on duty
				  whenever the facility is open for business. The attendant or employee on duty
				  does not typically dispense motor fuels into fuel tanks or containers. The
				  customer or vehicle operator usually conducts the dispensing.
"Fleet Vehicle Motor Fuel Dispensing Facility" means a motor
				  fuel dispensing facility at a commercial, industrial, governmental or
				  manufacturing property where motor fuels are not sold to the public but are
				  dispensed into the fuel tanks of motor vehicles that are used in connection
				  with the business or operation of that property by persons within the employ of
				  the business or operation.
"Full-Service Motor Fuel Dispensing Facility" means a motor
				  fuel dispensing facility that has one or more attendants or supervisors on duty
				  to dispense motor fuels into fuel tanks or containers whenever the facility is
				  open for business. All dispensing at a full-service motor fuel dispensing
				  facility is conducted by an attendant and no dispensing is conducted by
				  customers.
"Marine Motor Fuel Dispensing Facility" means a motor fuel
				  dispensing facility at or adjacent to shore, a pier, a wharf, or a floating
				  dock where motor fuels are dispensed into the fuel tanks of marine
				  craft.
"Motor Fuel Dispensing Facility Located Inside a Building"
				  means that portion of a motor fuel dispensing facility having obtained written
				  permission by OSFM to be located within the perimeter of a building or building
				  structure that also contains other occupancies. The term also includes detached
				  buildings separated by at least 20 feet from other buildings and used
				  exclusively for dispensing of motor fuels in compliance with NFPA 30A,
				  incorporated by reference in Section 174.210.
"Unattended Self-Service Motor Fuel Dispensing Facility"
				  means a motor fuel dispensing facility that has no attendant or employee on
				  duty. The customer or vehicle operator conducts the dispensing operation. This
				  includes coin, currency, membership card and credit card dispensing
				  operations.
"Motor fuel dispensing permit" or "dispensing permit" refers
				  to the requirements for, and the process of obtaining, permits required by 41
				  Ill. Adm. Code 175.200.
"NACE" means National Association of Corrosion
				  Engineers.
"NFPA" means National Fire Protection Association.
"NLPA" means National Leak Prevention Association.
"Noncommercial Purposes", with respect to motor fuel, means
				  not for resale.
"NOV" means a notice of violation issued by OSFM.
"NWGLDE" means National Work Group on Leak Detector
				  Evaluations.
"Operation" or "Use" in reference to underground storage
				  tanks
means that the tank must have had input or output of petroleum,
				  petroleum products, or hazardous substances, with the exception of hazardous
				  wastes, during the regular course of its usage. "Operation" does not include
				  compliance with leak detection requirements as prescribed by rules and
				  regulations of the Office of
the
State Fire Marshal or the
				  mere containment or storage of petroleum, petroleum products, or hazardous
				  substances, with the exception of hazardous wastes.
[430 ILCS
				  15/4(b)(1)(D) ]
"Operator" means any person in control of, or having
				  responsibility for, the daily operation of the UST.
"OSFM" means the Office of the State Fire Marshal.
"OSFM Rules", unless otherwise specified, means the rules of
				  OSFM located at 41 Ill. Adm. Code 160, 172, 174, 175, 176, 177 and 180.
"OSHA" means the federal Occupational Safety and Health
				  Administration.
"OSI" or "Operational Safety Inspection" means an inspection
				  of installation, removal, abandonment-in-place or any tank entry or other
				  activity requiring an STSS on site.
"Owner" means:
In the case of a UST in use on November 8, 1984, or brought
				  into use after that date, any person who owns a UST used for storage, use or
				  dispensing of regulated substances; and
In the case of any UST in use before November 8, 1984, but no
				  longer in use on that date, any person who owned the UST immediately before the
				  discontinuation of its use.
"Owner of Motor Fuel Dispensing Facility" means any
				  individuals or legal entity holding title, lease, license or any interest in a
				  motor fuel dispensing facility. The legal name, residence, address and county
				  of any individuals who are owners shall be filed with OSFM.
"PAI" or "Performance Assurance Inspection" means an
				  inspection for work that must be scheduled with OSFM and for which an STSS may
				  be present.
"Party" means any individual, trust, firm, partnership, joint
				  stock company, corporation, consortium, joint venture, commercial entity,
				  federal government, State government, municipality, commission, unit of local
				  government or political subdivision of the State, or any interstate
				  body.
"PEI" means the Petroleum Equipment Institute.
"Permit" or "permitting" or "UST permit" refers to the
				  requirements for, and the process of obtaining, permits required by 41 Ill.
				  Adm. Code 175.300.
"Person" means any individual, partnership, co-partnership,
				  firm, company, limited liability company, corporation, association, joint stock
				  company, trust, estate, municipality, commission, political subdivision of a
				  state, interstate body, or other legal entity, or their legal representative,
				  agent or assigns. "Person" also includes any consortium, joint venture,
				  commercial entity or the United States Government and any federal
				  agency.
"Petroleum" (including crude oil or any fraction of crude oil
				  that is liquid at standard conditions of temperature and pressure (60°F and
				  14.7 pounds per square inch
				  absolute)), includes, but is not limited to, petroleum-based substances
				  comprised of a complex blend of hydrocarbons, such as motor fuels, jet fuels,
				  distillate fuel oils, residual fuel oils, lubricants, petroleum solvents or
				  used oils.
"Petroleum UST" means an underground storage tank system that
				  contains petroleum or a mixture of petroleum with de minimis quantities of
				  other regulated substances. Petroleum USTs include those containing motor
				  fuels, jet fuels, distillate fuel oils, residual fuel oils, lubricants,
				  petroleum solvents or used oils.
"Pipe" or "Piping" is any hollow cylinder or tubular conduit
				  that is constructed of non-earthen materials. Such piping includes any elbows,
				  couplings, unions, valves or other in-line fixtures that contain and convey
				  regulated substances from the underground tanks to the dispensers, generators
				  or other designated equipment.
"Pipeline Facilities" (including gathering lines) includes
				  new or existing pipe rights-of-way and any equipment, facilities or buildings
				  used in the transportation of gas (or hazardous liquids, which include
				  petroleum or any other liquid designated by the U.S. Secretary of
				  Transportation) or the treatment of gas or designated hazardous liquids during
				  the course of transportation.
"Piping Run" or "pipe run" means all underground piping
				  connecting an individual submersible pump or suction stub to the furthest
				  dispenser or other end-use equipment.
"Precision Test" or "Precision Tested" means a type of
				  integrity test used to demonstrate tightness in a UST or associated piping. A
				  precision test must be performed by an OSFM-licensed contractor, certified in
				  the appropriate module, utilizing methods and equipment listed by an
				  independent third party testing laboratory and listed in the NWGLDE publication
				  List of Leak Detection Evaluations for Storage Tank Systems, incorporated by
				  reference in Section 174.210. Test procedures will be performed in accordance
				  with manufacturer's specifications for the testing equipment being used, and
				  must be able to detect a leak at a rate of at least
				  0.1 gallon per hour from any
				  portion of the tank or piping that routinely contains product, with a
				  probability of detection of at least 95 percent and a probability of false
				  alarm of no more than five percent.
"Re-certified Tank" A re-certified tank is any used tank that
				  has been inspected and certified pursuant to the requirements of 41 Ill. Adm.
				  Code 175.400(c).
"Red Tag" means the evidence of noncompliance status that is
				  issued to a UST facility determined by OSFM to be out of compliance following a
				  certification audit or other OSFM inspection in accordance with 41 Ill. Adm.
				  Code 177.
"Regulated Substance" means:
Any substance defined in section 101(14) of the Comprehensive
				  Environmental Response, Compensation and Liability Act (CERCLA) of 1980 (but
				  not including any substance regulated as a hazardous waste under subtitle C);
				  and
Petroleum, including crude oil or any fraction thereof that
				  is liquid at standard conditions of temperature and pressure (60 °F and
				  14.7 pounds per square inch
				  absolute). The term regulated substance includes, but is not limited to,
				  petroleum and petroleum-based substances comprised of a complex blend of
				  hydrocarbons, such as motor fuels, jet fuels, distillate fuel oils, residual
				  fuel oils, lubricants, petroleum solvents, and used oils.
"Release" means any spilling, overfilling, leaking, emitting,
				  discharging, escaping, leaching or disposing from a UST into groundwater,
				  surface water or subsurface soils.
"Release Detection" means determining whether a release of a
				  regulated substance has occurred from the UST system into the environment or a
				  leak has occurred into the interstitial space between the UST system and its
				  secondary barrier or secondary containment around it.
"Removal" means removal of the underground storage tank
				  system in accordance with 41 Ill. Adm. Code 175.830.
"Repair" means to restore to proper operating condition any
				  tank, pipe, spill prevention equipment, overfill prevention equipment,
				  corrosion protection equipment, release detection equipment, or other UST
				  component that has caused or may cause a release of product from the UST system
				  or has failed to function properly.
"Reportable Quantity" means the extent of a hazardous
				  substance release that requires notification under Section
				  176.320 or
				  176.340. The reportable quantity
				  varies depending upon the substance involved and is determined under
				  40 CFR
				  302.1 through
				  302.6 and
				  355.40, incorporated by reference
				  in 41 Ill. Adm. Code 174.210.
"Residential tank" means a tank located on property used
				  primarily for dwelling and not commercial purposes.
"Revocation of the License of a Contractor" means termination
				  of a contractor's license to perform any activity the contractor was licensed
				  to perform.
"Revocation of the Registration of an Underground Storage
				  Tank System" means termination by OSFM of the registration of a UST.
"Safety Can" means a container of not more than
				  5.3 gallons capacity having a
				  spring-closing lid and spout cover, and designed so that it will safely relieve
				  internal pressure when subjected to fire exposure, per NFPA 30 and 30A,
				  incorporated by reference in 41 Ill. Adm. Code 174.210.
"Secondary Containment" or "Secondarily Contained" means a
				  release prevention and release detection system for underground storage tanks
				  and/or piping, consisting of an inner and outer barrier with an interstitial
				  space that is monitored for leaks, and designed, constructed and installed
				  to:
contain regulated substances released from the tank system
				  until they are detected and removed;
prevent the release of regulated substances to the
				  environment at any time during the operational life of the UST; and
be checked at least every 30 days for evidence of a
				  release.
Secondary containment may include double-walled tanks and
				  piping. This term includes containment sumps when used for interstitial
				  monitoring of piping.
"Site Assessment" is sampling and analyzing the results of
				  the sampling to determine if a release has occurred and if contamination is
				  present on a site, pursuant to 41 Ill. Adm. Code
				  176.330.
"State Fire Marshal" means the State Fire Marshal of the
				  State of Illinois.
"STI" means Steel Tank Institute.
"Stormwater Collection System" or "Wastewater Collection
				  System" means all piping, pumps, conduit and any other equipment necessary to
				  collect and transport the flow of surface water runoff resulting from
				  precipitation or domestic, commercial or industrial wastewater to and from
				  retention areas or areas where treatment is designated to occur. The collection
				  of stormwater or wastewater does not include treatment, except when incidental
				  to conveyance.
"STSS" means a Storage Tank Safety Specialist employed by
				  OSFM.
"Surface Impoundment" is a natural topographic depression,
				  man-made excavation or diked area formed primarily of earthen materials
				  (although it may be lined with man-made materials) that is not an injection
				  well.
"Suspension of the License of a Contractor" means the
				  prohibition of a contractor's performance of any OSFM regulated activity the
				  contractor was licensed to perform for a period of time not to exceed one
				  year.
"Tank" is a stationary device designed to contain an
				  accumulation of regulated substances and constructed of non-earthen materials
				  (e.g., steel, fiberglass, concrete or plastic) that provides structural
				  support.
"Tank Vehicle" means any tank truck, tank full-trailer, or
				  tractor and tank semi-trailer combination.
"Ten Percent or More Beneath the Surface of the Ground", with
				  reference to a tank, means that its volume (including the volume of its
				  connected underground piping) is 10 percent or more beneath the ground surface
				  or otherwise covered with earthen materials. If a tank is in a vault, it is
				  considered "beneath the surface of the ground" if it cannot be viewed from all
				  sides and top and base.
"Third Party", unless otherwise specified in the rule, when
				  applied to a device or system, means an independent nationally recognized
				  organization or independent professionally licensed individual that evaluates
				  the device or system according to a nationally recognized practice. Examples
				  include, but are not limited to, UL, UL CAN, ANSI, ASTM, NLPA, API or
				  NWGLDE.
"UL" means Underwriters Laboratories, Inc.
"UL Canada" or "UL CAN" means Underwriters Laboratories of
				  Canada.
"Underground Storage Tank System" or "UST" or "UST System"
				  means any one or combination of tanks (including connected underground pipes,
				  connected ancillary equipment, connected cathodic protection, and containment
				  system, if any) used to contain an accumulation of regulated substances, the
				  volume of which (including the volume of underground connected pipes) is 10
				  percent or more beneath the surface of the ground. A UST does include an
				  emergency power generator tank system that stores any classification of fuel
				  for use exclusively, alternately or concurrently by an emergency power
				  generator, except as otherwise excluded in this definition. The term
				  "underground storage tank system" or "UST" does not include any pipes connected
				  to any tank excluded from this definition. Underground storage tank system or
				  UST does not include any tank system as follows:
Farm or residential tank with a capacity of 1,100 gallons or
				  less used for storing motor fuel for noncommercial purposes;
Heating oil tank of any capacity used exclusively for storing
				  heating oil for consumptive use on a farm or residence;
Septic tank;
Pipeline facility (including gathering lines):
Regulated under
				  49 U.S.C.
				  60101; or
Regulated under the Illinois Gas Pipeline Safety Act
				  [220 ILCS
				  20 ] and determined by the United States Secretary of
				  Transportation to be connected to a pipeline, or to be operated or intended to
				  be capable of operating at pipeline pressure or as an integral part of a
				  pipeline;
Any wastewater treatment tank system (including oil-water
				  separators) that is part of a wastewater treatment facility regulated under
				  section 402 or 307(b) of the Clean Water Act (33 U.S.C. 1342 or
				  1317(b)) ;
Surface impoundment, pit, pond or lagoon;
Stormwater or wastewater collection system;
Flow-through process tank;
Emergency spill protection tank or overflow tank that is
				  emptied expeditiously following use;
Liquid trap or associated gathering line directly related to
				  oil or gas production and gathering operations;
Storage tank situated in an underground area (such as a
				  basement, cellar, mine working, drift, shaft or tunnel) if the storage tank is
				  situated upon or above the surface of the floor and can be viewed from all
				  sides and top and base;
Storage tank situated in a vault (whether underground or
				  aboveground), if the storage tank is situated upon or above the surface of the
				  floor or ground and can be viewed from all sides and top and base;
Tank abandoned-in-place by filling with inert material in
				  compliance with 41 Ill. Adm. Code 175.840, while the condition allowing
				  abandonment in place still exists;
Tank with a capacity of 110 gallons or less;
Any UST holding hazardous wastes listed or identified under
				  subtitle C of the Solid Waste Disposal Act (42 U.S.C.
				  3251) ;
Tank that contains a de minimis concentration of regulated
				  substances, except that the tank shall have been in that status as of April 21,
				  1989 and may not have been converted to a UST tank on or after that date,
				  unless the tank has been re-certified and is in compliance with applicable
				  upgrade requirements; or
Equipment or machinery that contains regulated substances for
				  operational purposes, such as hydraulic lift tanks or electrical equipment
				  tanks.
With the exception of release reporting, response, corrective
				  action and financial responsibility requirements, the following USTs (whether
				  single- or double-wall construction) are partially excluded under
				  40 CFR
				  280.10(c) from UST
				  regulatory requirements found in 41 Ill. Adm. Code 172, 174, 175, 176 and
				  177:
Wastewater treatment tank systems not regulated under Section
				  402 or 307B of the Clean Water Act (33 U.S.C. 1342 or
				  1317(b)),
				  including oil-water separators;
Aboveground storage tanks associated with both airport
				  hydrant fuel distribution systems and UST systems with field-constructed tanks
				  regulated under 41 Ill. Adm. Code 175, Subpart I;
Any UST containing radioactive material that is regulated
				  under the Atomic Energy Act of 1954 (42 U.S.C. 2011) ; and
Any UST that is part of an emergency generation system at a
				  nuclear power generation facility licensed by the U.S. Nuclear Regulatory
				  Commission and subject to Nuclear Regulatory Commission requirements regarding
				  design and quality criteria, including, but not limited to,
				  10 CFR
				  50.
Although these systems are partially excluded (and therefore
				  partially exempt from the requirements in 41 Ill. Adm. Code 172, 174, 175, 176
				  and 177) under 40 CFR
				  280.10(c) and
				  280.11, they are required to
				  comply with release reporting, response, corrective action and financial
				  responsibility requirements in 41 Ill. Adm. Code
				  176.200 through
				  176.360 and, by December 22,
				  1998, are required to comply with the following:
Be constructed to prevent releases due to corrosion or
				  structural failure for the operational life of the UST;
Be cathodically protected against corrosion, constructed of
				  non-corrodible material, steel clad with a non-corrodible material, or designed
				  in a manner to prevent the release or threatened release of any stored
				  substance;
Be constructed or lined with material that is compatible with
				  the stored substance; and
Have installed a method for leak detection in accordance with
				  written directives issued by OSFM.
"UST Activity" means licensed UST work that falls into one or
				  more of the following categories:
Installation/retrofitting, to include upgrades; repairs;
				  containment sump testing; overfill prevention equipment inspection; spill
				  prevention equipment testing; release detection equipment and system testing;
				  and installation of wristband and spike anodes for cathodic protection of a
				  flex connector;
Decommissioning to include removal and
				  abandonment-in-place;
Lining, to include tank interior and lining inspection, hot
				  work and tank entry;
Precision testing of tanks or lines;
Testing of containment sumps, spill prevention equipment,
				  release detection equipment and systems, and inspection of overfill prevention
				  equipment;
Cathodic protection installation and testing.
"Upgrade" is the addition or retrofit of some portion of a
				  UST, such as cathodic protection, leak detection, new dispenser islands, new
				  piping, interior lining or spill and overfill controls, installation of a
				  manway, flex connectors, or other new openings.
"Wastewater Treatment Tank" means a tank that is designed to
				  receive and treat any influent wastewater through physical, chemical or
				  biological methods.