50 C.F.R. § 29.50
In addition to the definitions in §§ 25.12 , 29.21 , and 36.2 of this subchapter, the following definitions apply to this subpart:
Access means any method of entering or traversing on or across Service-administered lands or waters, including but not limited to: Vehicle, watercraft, fixed-wing aircraft, helicopter, unmanned aerial vehicle, off-road vehicle, mobile heavy equipment, snowmobile, pack animal, and foot. Access does not include the use of aircraft, including, but not limited to, airplanes, helicopters, and unmanned aircraft vehicles, that do not land on, or are not launched from, Service-administered lands or waters.
Area of operations means the area of Service-administered lands or waters on which operations are carried out, including roads or other areas that you are authorized to use related to the exercise of your oil and gas rights.
Contaminating substance means any toxic or hazardous substance that is used in or results from the conduct of operations and is listed under the Clean Air Act (42 U.S.C. 7401 et seq.), Clean Water Act regulations at 40 CFR parts 112 and 116, the Resource Conservation and Recovery Act regulations at 40 CFR part 261, or the Hazardous Materials Transportation Act regulations at 49 CFR part 172 . This includes, but is not limited to, explosives, radioactive materials, brine waters, formation waters, petroleum products, petroleum byproducts, and chemical compounds used for drilling, production, processing, well testing, well completion, and well servicing.
Gas means any fluid, either combustible or noncombustible, that is produced in a natural state from the earth and that maintains a gaseous or rarefied state at ordinary temperature and pressure conditions.
Oil means any viscous combustible liquid hydrocarbon or solid hydrocarbon substance that occurs naturally in the earth and is easily liquefiable on warming.
Modifying means changing operations in a manner that will result in additional impacts on refuge resources, visitor uses, refuge administration, or human health and safety beyond the scope, intensity, and/or duration of existing impacts. In order to determine if activities would have additional impacts, you must consult with the Service.
Operations means all existing and proposed functions, work, and activities in connection with the exercise of oil or gas rights not owned by the United States and located on Service-administered lands or waters.
Operations permit means a permit issued by the Service under this subpart authorizing an operator to conduct operations on Service-administered lands or waters.
Operator means any person or entity, agent, assignee, designee, lessee, or representative thereof exercising or proposing to exercise non-Federal oil and gas rights on Service-administered lands or waters.
Reconnaissance survey means an inspection or survey conducted by qualified specialists for the purpose of preparing a permit application. A reconnaissance survey:
Right to operate means a deed, lease, memorandum of lease, designation of operator, assignment of right, or other documentation demonstrating that you hold a legal right to conduct the operations you are proposing on Service-administered lands or waters.
Service, we, us and our means the U.S. Fish and Wildlife Service.
Technologically feasible, least damaging methods are those that we determine, on a case-by-case basis, to be most protective of refuge resources and uses while ensuring human health and safety, taking into consideration all relevant factors, including environmental, economic, and technological factors and the requirements of applicable law.
Temporary access permit means a permit issued by the Service authorizing an operator to access that operator's proposed area of operations to conduct reconnaissance surveys to collect basic information necessary to prepare an operations permit application.
Third-party monitor means a qualified specialist, who is not an employee, agent, or representative of the operator, nor has any conflicts of interest that could preclude objectivity in monitoring an operator's compliance, and who has the relevant expertise to monitor operations for compliance with applicable laws, regulations, and permit requirements.
Usable water means an aquifer or its portion that:
Waste means any material that is discarded. It includes, but is not limited to: Drilling fluids and cuttings; produced fluids not under regulation as a toxic or hazardous substance; human waste; garbage; fuel drums; pipes; oil; refined oil and other hydrocarbons; contaminated soil; synthetic materials; manmade structures or equipment; or native and nonnative materials.
You means the operator, unless otherwise specified or indicated by the context.
50 C.F.R. §29.50