National Pollutant Release Inventory or NPRI
Canada's National Pollutant Release Inventory compiles data on chemical substances released as pollutants by industrial facilities.
National Pollutant Discharge Elimination System (NPDES): A provision of the Clean Water Act which prohibits discharge of pollutants into waters of the United States unless a special permit is issued by EPA, a state, or, where delegated, ...
National Pollutant Release Inventory (NPRI) - A Canadian program, created in 1992, to provide information on pollutants released to the environment and transferred for disposal.
National Pollutant Discharge Elimination System (NPDES)
A system under the federal Clean Water Act that requires a permit for the discharge of pollutants to surface waters of the United States.
National Pollutant Discharge. Elimination System permit is the regulatory agency document issued by either a federal or state agency which is designed to control all discharges of pollutants from point sources in U.S. waterways.
National Pollutant Discharge Elimination System.
Numeric Biocriteria
numerical indices that describe expected attainable community attributes for different designated aquatic life uses.
NPI = National Pollutant Inventory
nutrients = A substance that provides plants food, includes vitamins and minerals
NWC = National Water Commission; See NWC's Water Dictionary ...
NPDES: National Pollutant Discharge Elimination System. A federal permit authorized by the Clean Water Act, Title IV, which is required for discharge of pollutants to navigable waters of the United States, ...
National Pollutant Discharge Elimination System. A federal permit authorized by the Clean Water Act, Title IV, which is required for discharge of pollutants to navigable waters of the United States, ...
National Pollutant Discharge Elimination System (NPDES)
National Priorities List (NPL)
National Response Center
National Response Team (NRT)
National Secondary Drinking Water Regulations
Navigable Waters
Necrosis ...
NPDES permit: Permit issued under the National Pollutant Discharge Elimination System for companies discharging pollutants directly into the waters of the United States.
NTU: Nephlometric turbidity units.
Its objective is to "restore and maintain the chemical, physical and biological integrity of the Nation's waters." The Act's major enforcement tool is the National Pollutant Discharge Elimination System (NPDES) permit.
 See also: Environment, Pollutant, Water, National, Discharge
  
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