Compendium of acronyms october 25, 2017 index

N

N - Newtons

N - Nitrogen
N - No
N - Number of Samples
N/A - Not Applicable
N/A - Not Available
NA - National Archives
NA - Not Applicable
NA - Nonattainment
Na - Sodium
NAA - Nonattainment Area(s)
NAA - North Atlantic Area
NAAEC - North American Agreement on Environmental Cooperation
NAAG - National Association of Attorneys General
NAAMP - North American Amphibian Monitoring Program
NAAQS - National Ambient Air Quality Standards
NAAS - National Air Audit System
NABN - National Atmospheric Background Network
NaBr - Sodium Bromide
NAC - National Agency Check
NAC - National Asbestos Council
NACA - National Agricultural Chemicals Association
NAC/AEFL - National Advisory Committee for Acute Guideline Levels for Hazardous Substances
NACD - National Association of Chemical Distributors
NACD - National Association of Conservation Districts
NACE - National Association of Corrosion Engineers
NACEPT - National Advisory Committee on Environmental Policy and Technology
NACEPT/RCC - National Advisory Committee on Environmental Policy and Technology, Reinvention Criteria Committee
NACHO - National Association of Chemical Hygiene Officers
NACI - National Agency Check and Inquiry
NACIP - Naval Assessment and Control of Installation Pollutants
NACO - National association of Counties
NACOSH - National Advisory Committee on Occupational Safety and Health
NAD - North American Datum
NAD - North Atlantic Division
NADB - National Air Data Branch
NADB - National Archeological Data Base
NADB - National Atmospheric Data Bank
NADP - National Atmospheric Deposition Program
NADPSC - National ADP service Center
NAE - National Academy of Engineering
NAEP - National Association of Environmental Professionals
NAF - Non Appropriated Funding
NAFCOG - North American Fuel Cell Owner Group
NAFTA - North American Free Trade Association
NAHERC - National Animal Health Emergency Response Corps
NAICS - North American Industrial Classification System
NAIMA - North American Insulation Manufacturers Association
NAIS - Neutral Administrative Inspection System
NALC - North American Landscape Characterization Project
NALD - Nonattainment Areas Lacking Demonstrations
NAM - National Association of Manufacturers
NAMA - National Air Monitoring Audits
NAMF - National Association of Metal Finishers
NAMS - National Air Monitoring Station
NAMS - National Air Monitoring System
NAMS/MIS - National Air Monitoring Stations Management Information System
NANCO - National Association of Noise Control Officials
NaoCl - Sodium Hypochlorite
NAP - Naphthalene
NAPA - National Academy of Public Administration
NAPAP - National Acid Precipitation Advisory Panel
NAPAP - National Acid Precipitation Assessment Program
NAPAP - National Acid Precipitation Program Emission Inventories
NAPBN - National Air Pollution Background Network
NAPBTAC - National Air Pollution Control Technical Advisory Committee
NAPCTAC - National Air Pollution Control Techniques Advisory Committee
NAPH - National Association of Public Hospitals
NAPIAP - National Agricultural Pesticide Impact Assessment Program
NAPIS - National Agricultural Pest Information System
NAPL - Non-aqueous Phase Liquid
NAPS - National Air Pollution Surveillance
NAQTS - National Air Quality Trend Station
NAR - National Asbestos Registry
NAR - Nonattainment Review
NARA - National Air Resources Act
NARA - National Archives and Records Administration
NARA - National Agrichemical Retailers Association
NARC - National Association of Regional Councils
NARCAM - North American Reporting Center for Amphibian Malformations
NARI - National Association for Recycling Industries
NARL - National Air and Radiation Laboratory
NARMP - National Acid Rain Monitoring Program
NARS - National Asbestos-Contractor Registry System
NARSTO - North American Research Strategy for Tropospheric Ozone
NARUC - National Association of Regulatory Utility Commissioners
NAS - National Academy of Sciences
NAS - National Audubon Society
NAS - Naval Station
NAS - Network Analysis System
NASA - National Aeronautics and Space Administration
NASASTD - NASA Standards
NASDA - National Association of State Departments of Agriculture
NASDAC - National Aviation Safety Data Analysis Center
NASEO - Nation Association of State Energy Officials
NASLR - National Association of State Land Reclamationists
NASN - National Air Sampling Network
NASN - National Air Surveillance Network
NASR - National Association of Solvent Recyclers
NASS - National Agricultural Statistics Service
NASS/CDS - National Accident Sampling System/Crashworthiness Data System
NASS/GES - National Accident Sampling System/General Estimates System
NASTTPPO - National Association of Sara Title III Program Officials
NATA - National Scale Air Toxics Assessment
NATaT - National Association of Towns and Townships
NATE - National Assessment and Tool Estimator
NATICH - National Air Toxics Information Clearinghouse
NATO - North Atlantic Treaty Organization
NATS - National Air Toxics Strategy
NaTT - Sodium Tolytriazole
NAV - Navigation
NAVFAC - Naval Facilities Engineering Command
NAWA - National Warning System
NAWC - National Association of Water Companies
NAWDEX - National Water Data Exchange
NAWMP - North American Waterfowl Management Plan
NAWQA - National Water Quality Assessment
NAWQC - National Ambient Water Quality Criteria
NBAR - Nonbinding Preliminary Allocation of Responsibility
NBBPVI - National Board of Boiler and Pressure Vessel Inspectors
NBIC - National Board Inspection Code
NBII - National Biological Information Infrastructure
NBR - Nitrile Butadiene Rubber
NBS - National Biological Service
NBS - National Bureau of Standards
NC - Navigation (Planning) Center
NC - No Cost
NC - Non Carcinogen
NCA - National Coal Association
NCA - Noise Control Act
NCAC - National Clean Air Coalition
NCAF - National Clean Air Fund
NCAMP - National Coalition Against the Misuse of Pesticides
NCAMS - Non Continuous Air Monitoring Station
NCAPS - National Corrective Action Prioritization System
NCAQ - National Commission on Air Quality
NCAR - National Center for Atmospheric Research
NCAR - Nonconformce and Corrective Action Report
NCASI - National Council of the Paper Industry for Air and Stream Improvements
NCBC - Naval Coalition Battalion Center
NCC - National Climatic Center
NCC - National Computer Center
NCCMAG - National Computer Center Management Advisory Group
NCCR - National Computer Center
NCCT - National Center for Combating Terrorism
NCD - North Central Division
NCDB - National Compliance Data Base
NCDC - National Climatic Data Center
NCDE - Northern Continental Divide Ecosystem
NCDEHNR - North Carolina Dept. of Environmental, Health, and Natural Resources
NCE - National Council for the Environment
NCEA - National Center for Exposure Assessment
NCEA - National Center for Environmental Assessment
NCEH - National Center for Environmental Health
NCEL - New Chemical Exposure Limit
NCEPI - National Center for Environmental Publications and Information
NCF - Network Control Facility
NCFAP - National Center for Food and Agricultural Policy
NCG - Non-condensable Gas
NCGIA - National Center for Geographic Information and Analysis
NCHS - National Center for Health Statistics
NCI - National Cancer Institute
NCIC - National Crime Information Center
NCIC - TSCA Non Confidential Information Center
NCID - National center for Infectious Diseases
nCi/g - Nanocuries per gram
NCIPC - National Center for Injury Prevention and Control
NCL - National Consumers League
NCLAN - National Crop Loan Assessment Network
NCLEHA - National Conference of Local Environmental Health Administrators
NCLP - National Contract Laboratory Program
NCLS - NEIC Library System
NCM - National Coal Model
NCM - Notice of Commencement of Manufacture (see NOC)
NCMS - National Center for Manufacturing Sciences Database
NCO - Negotiated Consent Order
NCP - Canadian Northern Contaminants Program
NCP - National Contingency Plan
NCP - National Oil and Hazardous Substances Pollution Contingency Plan
NCP - Noncompliance Penalty [ies]
NCP - Non Criteria Pollutant
NCPDI - National Coastal Pollutant Discharge Inventory
NCPIASI - National Council of the Paper Industry for Air and Stream Improvements
NCR - National Capital Region
NCR - Noncompliance Report
NCR - Nonconformance Report
NCR - Noncontact Recreation
NCRIC - National Chemical Response and Information Center
NCRP - National Council on Radiation Protection and Measurements
NCS - National Communications System
NCS - National Compliance Strategy
NCS - National Conservation Strategy
NCSL - National Conference on State Legislators
NCTC - National Conservation Training Center
NCTC - National Counterterrorism Center
NCTCOG - North Central Texas Council of Governments
NCTR - National Center for Toxicological Research
NCV - Nerve Conduction Velocity
NCVECS - National Center for Vehicle Emissions Control and Safety
NCWM - National Conference on Weights and Measures
NCWQ - National Commission on Water Quality
NCWS - Non-Community Water System
ND - Non-Detect(ed)
ND - Non-Detectable
NDA - New Drug Application
NDA - Nondestructive Assay
NDD - Negotiated Decision Document
NDDB - Natural Diversity Database
NDDN - National Dry Deposition Network
NDE - Nondestructive Examination
NDEP - Nevada Division of Environmental Protection
NDIR - Non Dispersive Infrared Analysis
NDMS - National Disaster Medical System
NDPD - National Data Processing Division
NDS - National Dioxin Study
NDS - National Disposal Site
NDVI - Normalized Difference Vegetation Index
NDWAC - National Drinking Water Advisory Council
NDZ - No Discharge Zone
NEA - National Energy Act
NEA - Northwest Environmental Advocates
NEAC - National Environmental Justice Advisory Council
NEAP - National Environment Action Plans
NEBOSH - National Examining Board of the Institution of Occupational Safety and Health
NEC - National Electric Code
NEC - National Electronic Code
NECRMP - Northeast Corridor Regional Modeling Project
NED - National Economic Development
NED - National Elevation Dataset
NED - New England District
NEDA - National Environmental Development Association
NEDI - National Environmental Data Index
NEDS - National Emissions Data System
NEEAP - National Environmental Education Advancement Project
NEEC - National Environmental Enforcement Council
NEEDS - Needs Survey
NEEJ - National Environmental Enforcement Journal
NEHA - National Environmental Health Association
NEI - National Emissions Inventory
NEI - Nuclear Energy Institute
NEIC - National Enforcement Investigation Center
NEIETC - New England Interstate Environmental Training Center
NEII - National Elevator Industry
NEIPCC - New England Interstate Pollution Prevention Commission
NEJAC - National Environmental Justice Advisory Council
NELAC - National Environmental Laboratory Accreditation Conference
NEMA - National Electronic Manufacturers Association
NEMA - Uganda National Environment Management Authority
NEMI - National Environmental Methods Index
NEMS - NASA Equipment Numbering System
NEO - Neoprene
NEP - National Energy Plan
NEP - National Environmental Policy
NEP - National Estuary Program
NEP - National Exercise Program
NEPA - China National Environmental Protection Agency
NEPA - National Environmental Policy Act (1969)
NEPI - National Environmental Policy Institute

NEPPS - National Environmental Performance Partnership System

NEPT - National Environmental performance Track
NER - National Emissions Report
NERA - National Economic Research Associates
NERC - North American Reliability Council
NERL - National Exposure Research Laboratory
NERO - National Energy Resources Organization
NEROS - Northeast Regional Oxidant Study
NERR - National Estuarine Research Reserve
NES - Non Opacity Emission Standards
NESA - National Admissions Standards Act
NESC - National Electrical Safety Code
NESC - National Environmental Supercomputing Center
NESCAUM - Northeast States for Coordinated Air Use Management
NESDA - Network for Environment and Sustainable Development in Africa
NESDIS - National Environmental Satellite, Data, and Information Service
NESHAP(s) - National Emission Standards for Hazardous Air

Pollutants

NESPHYTO - National Phytoplankton Data Base
NEST - Nuclear Emergency Support Team
NETA - National Environmental Training Association
NETC - National Emergency Training Center
NETCSC - National Emergency Training Center for Small Communities
NETI - National Enforcement Training Institute
NETL - National Energy Technology Labs
NETTING - Emission Trading Used to Avoid PSD/NSR Permit Review Requirements
NEW - Net Explosive Weight
NF - National Forest
NFA - National Fire Academy
NFA - No Further Action
NFAN - National Filter Analysis Network
NFAP - National Forestry Action Plan
NFC - National Fire Code
NFFE - National Federation of Federal Employees
NFIB - National Federation of Independent Business
NFIP - National Flood Insurance Program
NFMA - National Forest Management Act
NFPA - National Fire Protection Association
NFPA - National Forest Products Association
NFR - National Fire Rating
NFRAP - No Further Remedial Action Planned
NFS - National Forest Service
NFWF - National Fish and Wildlife Foundation
ng - Nanograms
NGA - National Geospatial Intelligence Agency
NGA - National Governors Association
NGA - Natural Gas Association
ng/dscm - Nanograms per Dry Standard Cubic Meter
NGFC - Natural Gas Fuel Cell
ng/J - Nanograms per Joule
ng/l - Nanograms per Liter
NGO - Nongovernmental Organization
NGPA - National Gas Policy Act
NGS - National Geodetic Survey
NGSA - Natural Gas Supply Association
NGVD - National Geodetic Vertical Datum
NGWA - National Groundwater Association
NGWIC - National Groundwater Information Center

NH₃ - Ammonia

NH₄ - Ammonium Nitrogen

NHANES - National Health and Nutrition Examination Study
NHB - NASA Handbook
NHD - National Hydrography Dataset
NHDES - New Hampshire Department of Environmental Services
NHEERL - National Health and Environmental Effects Research Laboratory
NHHB - Not Human Health Based
NHIS - National Health Interview Survey
NHMP - National Human Milk Monitoring Program
NHPA - National Historic Preservation Act
NHS - National Highway System
NHSDA - National Highway Systems Designation Act
NHSW - Nonhazardous Solid Waste
NHTS - National Household Travel Survey
NHTSA - National Highway Traffic Safety Act
NHTSA - National Highway Traffic Safety Administration
NHWP - Northeast Hazardous Waste Project
Ni - Nickel
NIBS - National Institute of Building Sciences
NIC - Non Interchangeable
NIC - Notification of Intent to Comply
NiCad - Nickel Cadmium (Battery)
NICC - National Infrastructure Coordinating Center
NICC - National Interagency Coordinating Center
NICCL - National Incident Communications Conference Line
NICET - National Institute for Certification in Engineering Technologies
NICS - National Institute for Chemical Studies
NICT - National Incident Coordination Team
NIE - Newly Industrialized Economies
NIEHS - National Institute of Environmental Health Sciences
NIEI - National Indoor Environmental Institute
NIES - Japan National Institute for Environmental Studies
NIH - National Institutes of Health
NIHL - Noise Induced Hearing Loss
NIIMS - National Interagency Incident Management System
NIM - National Impact Model
NIMBY - Not in My Backyard
NIMS - National Incident Management System
NIOSH - National Institute of Occupational Safety and Health
NIP - National Implementation Plan
NIPDWR - National Interim Primary Drinking Water Regulations
NIPDWS - National Interim Primary Drinking Water Standards
NIPER - National Institute for Petroleum and Energy Research
NIPP - National Infrastructure Protection Plan
NIR - Near Infrared
NIRS - National Inorganics and Radionuclides Survey
NIRT - Nuclear Incident Response Team
NIS - Newly Independent States
NIS - Noise Information System
NIS - Sodium Iodide Symporter
NISAC - National Industrial Security Advisory Committee
NISPOM - National Industry Security Program Operating Manual
NIST - National Institute of Standards and Technology
NITEP - National Incinerator Testing and Evaluation Program
NIX - NASA Image Exchange
NJ - New Jersey
NJAC - New Jersey Administrative Code
NJANG - New Jersey Army National Guard
NJDEP - New Jersey Department of Environmental Protection
NJDOT - New Jersey Department of Transportation
NJSA - New Jersey Statutes Annotated
NJOSP - New Jersey Office of State Planning
NJT - New Jersey Transit
NJTAP - New Jersey Technical Assistance Program
NJTRO - New Jersey Transit Rail Operations
NJTTF - National Joint Terrorism Task Force
NLA - National Lime Association
NLA - Notice of last Action
NLAP - National Laboratory Audit Program
NLC - National League of Cities
NLCD - National Land Cover Dataset
NLDBR - No Land Disposal Based on Recycling
NLETS - National Law Enforcement Teletype System
NLEV - National Low Emission Vehicle Program
NLFA - National Listing of Fish Advisories
NLIC - National Lead Information Clearinghouse
NLM - National Library of Medicine
NLT - Not Later Than
NM - Nanometer
Nm - Newton meters
NMA - National Mining Association
NMAC - Near Midair Collision
NMACS - Near Midair Collision System
NMC - National Meteorological Center
NMFC - National Motor Freight Class
NMFS - National Marine Fisheries Service
NMFWF - National Fish and Wildlife Foundation

NMHC - Non Methane Hydrocarbons

nmi - Nautical Mile

NMI - Northeast Midwest Institute
NML - National Municipal League
NMOC - Non Methane Organic Compound
NMOG - Non Methane Organic Gas
NMP - N-methyl Pyrrolidone
NMP - National Municipal Policy
NMPF - National Milk Producers Federation
NMR - Nuclear Magnetic Resonance
NMRT - National Medical Response Team
NMS - National Marine Sanctuary
Nm/s - Newton meters per second
NMVOC - Non Methane Volatile Organic Chemicals
NNC - Notice of Noncompliance
NNEMS - National Network of Environmental Management Studies
NNHP - Nevada Natural Heritage Program
NNI - No New Issue
NNPSPP - National Nonpoint Source Pollution Program
NNSA - National Nuclear Security Administration
NNSR - Non Attainment New Source Review
NO - Nitric Oxide
NO - Number
No. - Number
NO₂ - Nitrogen Dioxide

NO₃ - Nitrate Nitrogen

NOA - New Obligation Authority

NOA - Notice of Arrival
NOA - Notice of Availability
NOAA - National Oceanic and Atmospheric Administration (Agency)
NOAC - Nature of Action Code
NOAEL - No Observed Adverse Effect Level
NOC - National Operations Center
NOC - Notice of Commencement (of manufacture or import)
NOC - Notification of Compliance
NOD - Notice of Deficiency
NODA - Naval Ordinance Disposal Area
NODA - Notice of Data Availability
NOE - Notice of Enforcement
NOEC - No Observable Effect Concentration
NOEL - No Observable Effect Level
NOES - National Occupational Exposure Survey
NOHSCP - National Oil and Hazardous Substances Contingency Plan
NOI - Notice of Intent
NOI - Not Otherwise Indicated
NOI - Not Otherwise Indexed
NOIBN - Not Otherwise Indexed by Name
NOIC - Notice of Intent to Cancel
NOIS - Notice of Intent to Suspend
NOJC - National Oil Jobbers Council
NOMS - National Organics Monitoring Survey
NON - Notice of Noncompliance
NOO - No Odor Observed
NOPES - Non-Occupational Pesticide Exposure Study
NOR - Notice of Registration
NORA - National Occupational Research Agenda
NORA - National Oil Recyclers Association
NORM - Naturally Occurring Radioactive Material
NOS - National Ocean Service
NOS - National Ocean Survey
NOS - Not Otherwise Specified
NOSC - Naval On-Scene Coordinator
NOT - Notice of Termination
NOTIS - 103(c) Notification
NOV - Notice of Violation
NOV/C/D - Notice of Violation/Compliance/Demand
NOWPAP - North-West Pacific Action Plan
NO_x - Nitrogen Oxides
NPA - North Plains Area
NPAA - Noise Pollution and Abatement Act (1970)
NPACD - National Plan of Action to Combat Desertification
NPC - Notebook PC
NPCA - National Parks and Conservation Association
NPCA - National Pest Control Association
NPD - NASA Policy Directive
NPD - Nitrogen Phosphorous Detector
NPDES - National Pollutant Discharge Elimination System
NPDWR - National Primary Drinking Water Regulation
NPDWS - National Primary Drinking Water Standards
NPG - NASA Procedural Guidelines
NPGS - National Plant Germplasm System
NPHAP - National Pesticide Hazard Assessment Program
NPI - National Particulate Inventory
NPIRS - National Pesticide Information Retrieval System
NPK - Nitrogen, Phosphorous, Potassium
NPL - National Priorities List
NPM - National Program Manager
NPN - National Particulate Network
NPOSR - Naval Petroleum Oil Shale Reserves
NP-PET - North Plains Potential Evapotranspiration Network
NPR - National Performance Review
NPR - Naval Petroleum Reserves
NPR - Notice of Proposed Rulemaking
NPRC - Naval Petroleum Reserves California
NPRM - Notice of Proposed Rulemaking
NPS - National Park Service
NPS - National Permit Strategy
NPS - National Pesticide Survey
NPS - Non-Point Source
NPSC - No Process Safety Concern
NPSH - Net Positive Suction Head
NPSM - Nonpoint Source Model
NPTEC - Nonproliferation Test and Evaluation Complex
NPT - National Pipe Thread
NPTF - National Pipe Thread Fine
NPTN - National Pesticide Telecommunications Network
NPTS - Nationwide Personal Transportation Survey
NPUG - National Prime User Group
NPV - Net Present Value
NQ - Not Quantifiable
NR - Naval Reactors
NRA - National Recreation Area
NRAP - National River Action Plan
NRC - National Referral Center
NRC - National Registry of Chemicals
NRC - National Research Council
NRC - National Response Center
NRC - Nonreusable Container
NRC - Nuclear Regulatory Commission
NRCA - National Resource Council of America
NRCC - National Registry of Clinical Chemists
NRCC - National Response Coordinating Center
NRCC - Naval Regional Contracting Center
NRCS - Natural Resources Conservation Service
NRD - Natural Resource Damage
NRD - Natural Resources Division
NRDA - Natural Resources Damage Assessment
NRDAR - Natural Resources Damage Assessment and Restoration
NRDC - National Resources Defense Council
NRDL - National Radiation Defense Laboratory
NRDS - Nuclear Rocket Development Station
NRECA - National Rural Electric Cooperative Association
NREL - National Renewable Energy Laboratory
NREP - National Registry of Environmental Professionals
NRF - Naval Reactor Facility
NRF - Nuclear Reactors Facility
NRHP - National Register of Historic Places
NRI - National Resources Inventory
NRI - Natural Resources Inventory
NRMRL - National Risk Management Research Laboratory
NRMS - National Resource Management System
NRP - National Response Plan
NRR - Noise Reduction Rating
NRS - National Response System
NRT - National Response Team
NRTL - Nationally Recognized Testing Laboratory
NRWA - National Rural Water Association
n.s. - Not Significant
NSA - National Security Agency
NSA - National Stone Association
NSC - National Safety Council
NSC - National Security Council
NSC - Naval Supply Center
NSCEP - National Service Center for Environmental Publications
NSDWR - National Secondary Drinking Water Regulations
NSEC - National System for Emergency Coordination
NSEP - National System for Emergency Preparedness
NSF - National Sanitation Foundation
NSF - National Science Foundation
NSF - National Strike Force
NSFC - National Small Flows Clearinghouse
NSFCC - National Strike Force Coordination Center
NSFI - National Sanitation Foundation International
NSI - National Security Information
NSI - National Sediment Inventory
NSN - National Stock Number
NSN - New Substance Notification
NSNA - No Stock Number Assigned
NSO - Nevada Site Office
NSO - Nonferrous Smelter Orders
NSP - National Screening Program for Organics in Drinking Water
NSP - National Search and Rescue Plan
NSPE - National Society for Professional Engineers
NSPS - New Source Performance Standards
NSR - New Source Review
NSRL - No Significant Risk Level
NSRPD - New Source Review Permits Division
NSR/PSD - New Source Review and Prevention of Significant Deterioration Permitting
NSSE - National Special Security Event
NS&T - National Status & Trends
NSTC - National Sciences and Technology Council
NSTEC - National Securities Technologies
NSTL - National Space Technology Laboratory
NSWMA - National Solid Waste Management Association
NSWS - National Surface Water Survey
NTA - Negotiated Testing Agreement
NTAD - National Transportation Atlas Database
NTC - National Training Center
NTCEM - National Tribal Conference on Environmental Management
NTD - National Transit Database
NTDB - National Trade Databank
NTE - Neurotic Esterase
NTE - Not to Exceed
NTGS - National Technical Guidance Studies
NTI - National Toxics Inventory
NTIS - National Technical Information Service
NTL - National Transportation Library
NTN - National Trends Network
NTNC - Nontransient Noncommunity
NTNCWS - Non-transient Non-community Water System
NTP - National Toxicology Program
NTP - Normal Temperature and Pressure
NTP - Notice to Proceed
NTR - National Toxics Rule
NTS - Nevada Test Site
NTSB - National Transportation Safety Board
NTSER - Nevada Test Site Environmental Report
NTSHF - Nevada Test Site Historical Foundation
NTTAA - National Technology Transfer and Advancement Act
NTTC - National Technology Transfer Center
NTTS - National TMDL Tracking System
NTU - Nephlometric Turbidity Unit
NUAD - Not Suitable for Unconfined Aquatic Disposal
NUCA - National Utility Contractors Association
NUREG - Criteria for Preparation and Evaluation of Radiological Regulations and Guides
NURF - NAPAP Utility Reference File
NURP - Nationwide Urban Runoff Program
NVFEL - National Fuel and Vehicle Emissions Laboratory
NVOAD - National Voluntary Organizations Active in a Disaster
NVPP - National Vehicle Population Poll
NVRT - National Veterinary Response Team
NVUM - National Visitor Use Monitoring
NWA - National Water Alliance
NWD - Northwestern Division
NWF - National Wildlife Federation
NWI - National Wetlands Inventory
NWIS - National Weather Information System
NWP - Nationwide Permit Program
NWPA - Nuclear Waste Policy Act (1982)
NWRC - National Weather Records Center
NWS - National Weather Service
NWWA - National Water Well Association
NYCDEP - New York City Department of Environmental Protection
NYCDOHMH - New York City Department of Health and Mental Hygiene
NYDEC - New York Department of Environmental Conservation
NYIEQ - New York Indoor Environmental Quality Center
NYSDEC - New York State Department of Environmental Conservation
NYSDOH - New York State Department of Health