NAA – means Nonattainment Area. A geographic area in which the level of criteria airs pollutant is higher than the level allowed by the federal standards.  A single geographic area may have acceptable levels of one criteria air pollutant but unacceptable levels on one or more other criteria air pollutants; thus, an area can be both attainment and nonattainment at the same time.

National Ambient Air Quality Standard (NAAQS) – means an ambient air quality standard promulgated at 40 CFR 50.

National Emissions Standards for Hazardous Air Pollutants (NESHAPS) - Emissions standards set by EPA for an air pollutant not covered by NAAQS that may cause an increase in fatalities or in serious, irreversible, or incapacitating illness. Primary standards are designed to protect human health, secondary standards to protect public welfare (e.g. building facades, visibility, crops, and domestic animals).

NESCAUM – means Northeast States for Coordinated Air Use Management. NESCAUM is a nonprofit association of air quality agencies in the Northeast. Our Board of Directors consists of the air directors of the six New England states (Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont), New Jersey, and New York. . Our staff of thirty provide scientific, technical, analytical, and policy support to the air quality programs of the eight Northeast states. NESCAUM works to create effective solutions to critical clean air issues that harmonize environmental, public health, economic, and other societal goals through cutting-edge scientific research, policy analysis, outreach, and demonstration projects.

New Source Performance Standards (NSPS) - U.S. federal standards promulgated for major and minor sources on a category-category basis. NSPS are national emission standards that are progressively tightened over time to achieve a steady rate of air quality improvement without unreasonable economic disruption. The NSPS imposes uniform requirements on new and modified sources through the nation. These standards are based on the best demonstrated technology (BDT).

New Source Review (NSR) - A program used in development of permits for new or modified industrial facilities which are in a nonattainment area, and which emit criteria air pollutants. The two major requirements of NSR are Best Available Control Technology (BACT) and emission offset.

N.J.A.C. –means New Jersey Administrative Code.

NJMVC – means New Jersey Motor Vehicles Commission within the New Jersey Department of Transportation.

NJTPA – means New Jersey Transportation Planning Authority. The federally authorized Metropolitan Planning Organization (MPO) for the 6 million people in the 13-county northern New Jersey region.

NLEV – means National Low Emission Vehicle.   A program that creates voluntary requirements that U.S. automakers can adopt in lieu of compliance with other vehicle emission control measures. The program applies to the manufacture of new light-duty vehicles and new light-duty trucks up to 6,000 lb gross vehicle weight rating (GVWR).

Nitric Oxide (NO) - A gas formed by combustion under high temperature and high pressure in an internal combustion engine. NO is converted by sunlight and photochemical processes in ambient air to nitrogen oxide. NO is a precursor of ground-level ozone pollution, or smog.

Nitrogen Dioxide (NO2) - The result of nitric oxide combining with oxygen in the atmosphere; major component of photochemical smog.

Nitrogen Oxides (NOx) - A criteria air pollutant. Nitrogen oxides are produced from burning fuels, including gasoline and coal. Nitrogen oxides are smog formers, which react with volatile organic compounds to form smog. Nitrogen oxides are also major components of acid rain.

Nonattainment area – a geographic area in which the level of criteria airs pollutant is higher than the level allowed by the federal standards.  A single geographic area may have acceptable levels of one criteria air pollutant but unacceptable levels on one or more other criteria air pollutants; thus, an area can be both attainment and nonattainment at the same time.

Non-Road Emissions - Pollutants emitted by combustion engines on farm and construction equipment, gasoline-powered lawn and garden equipment, powerboats, outboard motors, and some portable equipment.