Natural uranium means uranium with the naturally occurring distribution of uranium isotopes, which is approximately 0.711 weight percent uranium-235, and the remainder by weight essentially uranium-238.
Natural area means an area of the rural or non-urban environment which is in an unspoilt natural state or is of high scenic value, and includes, but is not limited to, national parks, game reserves, nature reserves, marine reserves, wilderness areas, areas of extensive agriculture and scenic areas;
Natural radioactivity means radioactivity of naturally occurring nuclides.
Natural resources means land, fish, wildlife, biota, air, water, ground water, drinking water supplies, and other such resources belonging to, managed by, held in trust by, appertaining to, or otherwise controlled by the United States or the State.
Natural Disaster means a flood, hurricane, tornado, earthquake, volcanic eruption, fire, wildfire or blizzard that is due to natural causes.
Biological safety cabinet means a containment unit suitable for the preparation of low to moderate risk agents where there is a need for protection of the product, personnel, and environment, according to National Sanitation Foundation (NSF) Standard 49.
National Ambient Air Quality Standards or “NAAQS” means national ambient air quality standards that are promulgated pursuant to Section 109 of the Act, 42 U.S.C. § 7409.
Nodal Ministry means the Ministry or Department identified pursuant to this order in respect of a particular item of goods or services or works.
Pollution prevention means any activity that through process changes, product reformulation or redesign, or substitution of less polluting raw materials, eliminates or reduces the release of air pollutants (including fugitive emissions) and other pollutants to the environment prior to recycling, treatment, or disposal; it does not mean recycling (other than certain “in-process recycling” practices), energy recovery, treatment, or disposal.
Air-purifying respirator means a respirator with an air-purifying filter, cartridge, or canister that removes specific air contaminants by passing ambient air through the air-purifying element.
Natural Gas or "Gas" shall mean natural gas, processed, unprocessed, vaporized liquid natural gas, synthetic gas, propane-air mixture or any mixture of these gases.
Radiopharmaceutical quality assurance means, but is not limited to, the performance of appropriate chemical, biological, and physical tests on potential radiopharmaceuticals and the interpretation of the resulting data to determine their suitability for use in humans and animals, including internal test assessment, authentication of product history, and the keeping of proper records.
Drug therapy management means the review of a drug therapy regimen of a patient by one or more pharmacists for the purpose of evaluating and rendering advice to one or more practitioners regarding adjustment of the regimen.
Ocean transportation means any transportation aboard a ship, vessel, boat, barge, or ferry through international waters.