Glossary N

The Environmental Glossary. Letter N +++ Popular Articles: 'Natural Step', 'Nitrogen', 'NACE'

A "N" in a Million Cancer Risk is a risk level of "N" in a million implies a likelihood that up to "N" people, out of one million equally exposed people would contract cancer if exposed continuously (24 hours per day) to the specific concentration over 70 years (an assumed lifetime).

NACE, which stands for Nomenclature of Economic Activities, is a classification system used by the European Union (EU) to categorize economic activities for statistical and regulatory purposes. It serves as a standardized framework for classifying businesses and organizations based on their primary economic activities. In the context of the environment, NACE codes are essential for tracking and regulating industries and sectors that have an impact on natural resources and sustainability.

A NADP is National Atmospheric Deposition Program.

Français: Système de classification des industries de l'Amêrique du Nord

The North American Industry Classification System or NAICS (pronounced "nakes") is used by business and government to classify business establishments according to type of economic activity (process of production) in Canada, Mexico, and the United States of America. It has largely replaced the older Standard Industrial Classification (SIC) system; however, certain government departments and agencies, such as the U.S. Securities and Exchange Commission (SEC), still use the SIC codes.

A Narrative Biological Criteria is general statements of attainable or attained conditions of Biological Integrity and water quality for a given designated Aquatic life use.

A National Academy of Sciences (NAS) is the National Academy of Sciences/National Research Council (NRC) performs level 2 peer review to determine if EMAP projects have overall scientific merit and integrate both internally and with other government-sponsored monitoring programs.

- National Air Toxics Assessment (NATA) : A National Air Toxics Assessment (NATA) is EPA's ongoing comprehensive evaluation of Air Toxics in the U.S. These activities include expansion of Air Toxics monitoring, improving and

- National Ambient Air Quality Standards: - National Ambient Air Quality Standards (NAAQS): : A National Ambient Air Quality Standards (NAAQS): is In 1971,

National Primary Drinking Water Regulations are Legally enforceable standards that apply to public water systems.

A National Priorities List (NPL) is EPA"s list of the most serious uncontrolled or abandoned Hazardous Waste sites, identified as candidates for Long-Term Action using money from the

Related Articles

Bioaerosol at■■■■
The term bioaerosol ( biological aerosol ) refers to airborne particles that contain or were released . . . Read More
Aerosol therapy at■■■■
Aerosol therapy revolves around a treatment using liquid medications or aerosols (fine particles dispersed . . . Read More
Acid ■■■
An Acid is a Corrosive solution with a pH less than 7 Description Acid in the environment refers to the . . . Read More
Acid Deposition ■■■
An Acid Deposition is a complex chemical and atmospheric phenomenon that occurs when Emissions of sulfur . . . Read More
Acidic ■■■
Acidic is the condition of water or soil that contains a sufficient amount of Acid substances to lower . . . Read More
Acidity ■■■
Acidity may be defined as the quality, state or degree of being acid or the level of acid in a substanceAcidity . . . Read More
New GOBO art glass at■■■
New GOBO art glass has been the leading force in professionaldecorative glass for over16 years , since . . . Read More
Supply Sodium Silicofluoride at■■■
Supply Sodium Silicofluoride: HIWe are a leading *Sodium Silicofluoride* supplier in China Now we’d . . . Read More
Sulfur dioxide ■■■
Sulfur dioxide (SO2) is a heavy, smelly gas which can be condensed into a clear liquidused to make sulfuric . . . Read More
Vinegar ■■■
Vinegar is an aqueous solution of acetic acid and trace compounds that may include flavorings. Vinegar . . . Read More