NR 660.10(84)(84)“On ground tank” means a device meeting the definition of “tank” in this section and that is situated in such a way that the bottom of the tank is on the same level as the adjacent surrounding surface so that the external tank bottom cannot be visually inspected.
NR 660.10(85)(85)“On-site” means the same or geographically contiguous property which may be divided by public or private right-of-way, provided the entrance and exit between the properties is at a cross-roads intersection, and access is by crossing as opposed to going along, the right-of-way. Non-contiguous properties owned by the same person but connected by a right-of-way which the owner controls and to which the public does not have access, is also considered on-site property.
NR 660.10(86)(86)“Open burning” means the combustion of any material without any of the following characteristics:
NR 660.10(86)(a)(a) Control of combustion air to maintain adequate temperature for efficient combustion.
NR 660.10(86)(b)(b) Containment of the combustion-reaction in an enclosed device to provide sufficient residence time and mixing for complete combustion.
NR 660.10(86)(c)(c) Control of emission of the gaseous combustion products.
NR 660.10 NoteNote: See also “incineration” and “thermal treatment.”
NR 660.10(87)(87)“Operator” means the person responsible for the overall operation of a facility.
NR 660.10(88)(88)“Owner” means the person who owns a facility or part of a facility.
NR 660.10(89)(89)“Partial closure” means the closure of a hazardous waste management unit according to the applicable closure requirements of chs. NR 664 and 665 at a facility that contains other active hazardous waste management units. For example, partial closure may include the closure of a tank (including its associated piping and underlying containment systems), landfill cell, surface impoundment, waste pile or other hazardous waste management unit, while other units of the same facility continue to operate.
NR 660.10(90)(90)“Person” means an individual, trust, firm, joint stock company, limited liability company, federal agency, corporation (including a government corporation), partnership, association, state, municipality, commission, political subdivision of a state or any interstate body.
NR 660.10(91)(91)“Personnel” or “facility personnel” means all persons who work at or oversee the operations of a hazardous waste facility, and whose actions or failure to act may result in noncompliance with ch. NR 664 or 665.
NR 660.10(92)(92)“Pesticide” means any substance or mixture of substances intended for preventing, destroying, repelling or mitigating any pest, or intended for use as a plant regulator, defoliant or desiccant, other than any article that is one of the following:
NR 660.10(92)(a)(a) A new animal drug under the federal food, drug and cosmetic act (FFDCA), 21 USC 321(v).
NR 660.10(92)(b)(b) An animal drug that has been determined by regulation of the federal secretary of health and human services to not be a new animal drug.
NR 660.10(92)(c)(c) An animal feed under the federal food, drug and cosmetic act (FFDCA), 21 USC 321(w) that bears or contains any substances described by par. (a) or (b).
NR 660.10(93)(93)“Pile” means any non-containerized accumulation of solid, non-flowing hazardous waste that is used for treatment or storage and that is not a containment building.
NR 660.10(94)(94)“Plasma arc incinerator” means any enclosed device using a high intensity electrical discharge or arc as a source of heat followed by an afterburner using controlled flame combustion and which is not listed as an industrial furnace.
NR 660.10(95)(95)“Point source” has the meaning given in s. 283.01 (12), Stats.
NR 660.10(96)(96)“Publicly owned treatment works” or “POTW” means any device or system used in the treatment (including recycling and reclamation) of municipal sewage or industrial wastes of a liquid nature which is owned by a “state” or “municipality” (as defined by s. 283.01 (7), Stats.). This definition includes sewers, pipes or other conveyances only if they convey wastewater to a POTW providing treatment.
NR 660.10(97)(97)“Qualified ground-water scientist” means a scientist or engineer who has received a baccalaureate or post-graduate degree in the natural sciences or engineering, and has sufficient training and experience in ground-water hydrology and related fields as may be demonstrated by state registration, professional certifications or completion of accredited university courses that enable that individual to make sound professional judgments regarding ground-water monitoring and contaminant fate and transport.
NR 660.10(97m)(97m)“Recognized trader” means a person domiciled in the United States, by site of business, who acts to arrange and facilitate transboundary movements of wastes destined for recovery or disposal operations, either by purchasing from and subsequently selling to United States and foreign facilities, or by acting under arrangements with a United States waste facility to arrange for the export or import of the wastes.
NR 660.10(97t)(97t)“Remanufacturing” means processing a higher-value hazardous secondary material in order to manufacture a product that serves a similar functional purpose as the original commercial-grade material. For the purpose of this definition, a hazardous secondary material is considered higher-value if it was generated from the use of a commercial-grade material in a manufacturing process and can be remanufactured into a similar commercial-grade material.
NR 660.10(98)(98)“Remediation waste” means all solid and hazardous wastes, and all media (including ground water, surface water, soils and sediments) and debris, that are managed for implementing cleanup.
NR 660.10(99)(99)“Remediation waste management site” means a facility where an owner or operator is or will be treating, storing or disposing of hazardous remediation wastes. A remediation waste management site is not a facility that is subject to corrective action under s. NR 664.0101, but is subject to corrective action requirements if the site is located in such a facility.
NR 660.10(100)(100)“Replacement unit” means a landfill, surface impoundment or waste pile unit (1) from which all or substantially all of the waste is removed and (2) that is subsequently reused to treat, store or dispose of hazardous waste. Replacement unit does not apply to a unit from which waste is removed during closure, if the subsequent reuse solely involves the disposal of waste from that unit and other closing units or corrective action areas at the facility, according to an approved closure plan or EPA or state approved corrective action.
NR 660.10(100m)(100m)“Resource conservation and recovery act” or “RCRA” means the public law that creates the framework for the proper management of hazardous and non-hazardous solid waste. The term RCRA is often used interchangeably to refer to the law and regulations. 
NR 660.10(101)(101)“Representative sample” means a sample of a universe or whole (e.g., waste pile, lagoon, ground water) which can be expected to exhibit the average properties of the universe or whole.
NR 660.10(102)(102)“Run-off” means any rainwater, leachate or other liquid that drains over land from any part of a facility.