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There are 294 entries started with 'n'
N N VALUE N, No
N2O Nc Nq
Nγ NAAEC NAAQS
NA-BENTONITE NABGG NACA
NACE NACEPT NA-CLAY
NADP/NTN NAGS NAGT
NA-MONTMORILLONITE nano NANOFILTRATION
NANOSCALE IRON PARTICLE (NIP) NANOSCALE IRON PARTICLE SLURRY WALL NAPAP
NAPHTHA NAPHTHALENE NAPL
NAPS NARA NARM
NAS NASA NASBG
NASDA NATIONAL AMBIENT AIR QUALITY STANDARDS (NAAQS) NATIONAL CONTINGENCY PLAN (NCP)
NATIONAL COUNCIL FOR GEO-ENGINEERING AND CONSTRUCTION (Geo Council) NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS (NESHAP) NATIONAL ENVIRONMENTAL POLICY ACT (NEPA)
NATIONAL GROUND WATER ASSOCIATION (NGWA) NATIONAL INTERIM PRIMARY DRINKING WATER REGULATIONS (NIPDWR) NATIONAL MAYDAY READINESS INITIATIVE (NMRI)
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) NATIONAL PRIORITIES LIST (NPL) NATURAL DRAFT COOLING TOWER
NATURAL FLOW NATURAL FREQUENCY NATURAL GAS
NATURAL HAZARDS NATURAL LEVEE NATURAL LIGHTWEIGHT AGGREGATE
NATURAL LOAD NATURAL MINERAL AGGREGATE NATURAL ORGANIC MATTER (NOM)
NATURAL RESOURCES NATURAL SOIL SYSTEMS NATURAL STRAIN
NATURAL WATER NATURAL WATER TABLE NATURAL WELL
NATURALLY OCCURRING RADIONUCLIDES NAUTICAL MILE (Unit) NBOD
NBS NCAMP NCAR
NCCLS NCDC NCEPI
NCHRP NCI NCP
NDP NDT NEAPTIDE
NEAR FIELD NEAT SOLUTION NEC
NECK NEEDLE DAM NEEDLE PILES
NEGATIVE ARTESIAN HEAD NEGATIVE HEAD NEGATIVE PORE-WATER PRESSURE
NEGATIVE PRESSURE NEGATIVE SKIN FRICTION (NSF) (Foundation) NEHRP
NELAP NEOPRENE NEPA
NEPHELOMETRIC TURBIDITY UNIT (NTU) NEPI NEPPS
NERNST EQUATION NESHAP NESSLER TUBES
NESTA NET DRIVING PRESSURE (NDP) NET FORCE
NET HEAD NET PENETRATION NET POSITIVE SUCTION HEAD (NPSH)
NET RAINFALL NET SETTLEMENT (Foundation) NETA
NEUTRAL SOIL NEUTRAL STRESS NEUTRALIZATION
NEUTRALIZATION, CHEMICAL NEUTRON NEVE
NEW GENERATION MATERIAL SYSTEM (NGMS) NEW SOURCES PERFORMANCE STANDARDS (NSPS) NEW WATER (Waste Control)
NEWMARK CHART NEWMARK-BOUSSINESQ CHART NEWTON (N)
NEWTON (N) (Unit) NEWTON'S FIRST LAW OF MOTION NEWTON'S SECOND LAW OF MOTION
NEWTON'S THIRD LAW OF MOTION NF NFPA
NFRAP NGWA NHC
NICKEL SULPHATE NIEHS NIGHT SOIL
NIH NIMBY (Waste Control) NIOSH
NIP NIPDWR NIRS
NIST NITER NITRATE
NITRATE FORMER NITRATING ACID NITRIC ACID
NITRIFICATION NITRITE NITRITE FORMERS
NITROBACTER NITROCELLULOSE NITROGEN
NITROGEN CYCLE NITROGEN DIOXIDE NITROGEN FIXATION
NITROGEN OXIDE NITROGEN, NITRATE NITROGEN, NITRITE
NITROGENOUS BIOCHEMICAL OXYGEN DEMAND (NBOD) NITROGENOUS BOD NITROGENOUS OXYGEN DEMAND (NOD)
NITROGLYCERIN NITROSOMONAS NMHC
NMOC NMP NMR
NMRI NMVOC NNI
NO NO DETECTABLE EMISSIONS NOx
NOAA NOAEL NOCARDIA
NOD NODE NODULIZING KILN
NOEC NO-EFFECT LEVEL NOEL
NOISE NOISE AND NUMBER INDEX (NNI) NOISE POLLUTION
NOISE-INDUCED HEARING LOSS NOM NON-AQUEOUS PHASE LIQUID (NAPL)
NON-ARTESIAN WELL NON-ATTAINMENT AREAS NONCARBONATE HARDNESS (NCH)
NONCOMBUSTIBLE REFUSE NONCOMMUNITY WATER SYSTEM NONCOMPRESSIBLE SOIL
NONCONDENSABLE GAS NONCONTACT COOLING WATER SYSTEM NONDEGRADABLE CHEMICAL POLLUTANTS
NONDEGRADABLE POLLUTANTS NONE (Soil Drainage) NONERODING VELOCITY
NONFLOWING WELL NONFOLIATE NONGRADED SEDIMENT
NON-IMPACTED AREA NONIONIC POLYMER NONMETALLIC CONSTRUCTION MATERIAL CLASSIFICATION
NONMETALS NONPLASTIC (Soil Consistence) NON-POINT SOURCE POLLUTION (NPSP)
NONPOLAR LIQUIDS NONPUTRESCIBLE NONRENEWABLE RESOURCE
NON-SALT FLOCCULATION NONSETTLEABLE SOLIDS NONSILTING VELOCITY
NONSTICKY (Soil Consistence) NONSTOICHIOMETRIC COMPOUNDS NONUNIFORM FLOW
NONWOVEN GEOTEXTILES NORM NORMAL DEPTH
NORMAL EROSION NORMAL FAULT (Earthquake) NORMAL FLOW
NORMAL MODES OF VIBRATION NORMAL MOISTURE CONTENT NORMAL PRESSURE
NORMAL SHRINKAGE NORMAL SOIL NORMAL STRESS
NORMAL VELOCITY NORMAL WEIGHT AGGREGATES NORMAL YEAR
NORMALITY NORMALLY CONSOLIDATED CLAY NORMALLY CONSOLIDATED SOIL DEPOSIT
NORTH AMERICAN GEOSYNTHETICS SOCIETY (NAGS) NORWEGIAN MARINE CLAY NOTCH SENSITIVITY
NOx NP NPCA
NPDES NPDWR NPE
NPHAP NPIRS NPL
NPSH NPSHA NPSHR
NPSP NPTN NRA
NRC NRD NRDC
NSD NSDWR NSEC
NSEP NSF NSPs
NSS NSSCPP NTI
NTIS NTP NTU
NUCIFORM SOIL STRUCTURE NUCLEAR NUCLEAR CHEMISTRY
NUCLEAR ENERGY NUCLEAR FISSION NUCLEAR FORCE
NUCLEAR MAGNETIC RESONANCE (NMR) NUCLEAR POWER PLANT NUCLEAR POWER PLANT WORKING LIFE
NUCLEAR REACTOR NUCLEAR TRANSMUTATION NUCLEAR WASTE
NUCLEAR WASTE CONTROL NUCLEAR WASTE SOURCES NUCLEATION
NUCLEIC ACIDS NUCLEUS NUCLIDE
NUNATAK NURE NUT SOIL STRUCTURE
NUTRIENT NUTRIENTS NWA
NWD NWPA NWS
NWSIA NWWA NYLON




ENVIRONMENTAL GEOTECHNOLOGY DICTIONARY
Edited By
Hsai-Yang Fang, Ph.D
Professor Emeritus
Lehigh University. Bethlehem, PA
Distinguished Fellow
Global Institute for Energy & Environmental Systems
The University of North Carolina at Charlotte, Charlotte, NC

Copyright Reserved 2006

Environmental geotechnology is a relatively new and interdisciplinary subject, which covers soil, water and rock and their interaction with various environmental cycles including the atmosphere, biosphere, hydrosphere, lithosphere, as well as geomicrobiosphere. To tackle this complex subject, it is necessary to have knowledge from other disciplinary fields including agricultural science, biology, environmental science, geology, microbiology, mineralogy, and physicochemistry. Therefore, a uniform glossary of terms, definitions, nomenclature, abbreviation, acronym, symbols and units is needed for general discussions, reports and documents to minimize confusion and to improve the effectiveness for the environmental aspects of geotechnical problems. Some important information is collected, compiled and edited, and in spite of careful preparation of this dictionary, there cannot be avoided some missing or misinterpreted terms, typing errors, etc. The editor hopes, however, that with the aid of suggestions and criticism, there can be improvement for a later edition.
Thanks to many government agencies, professional societies and private organizations including American Society of Civil Engineers (ASCE), American Society for Testing and Materials (ASTM), Transportation Research Board (TRB), International Society of Environmental Geotechnology (ISEG), U.S. Environmental Protection Agency (EPA), U.S. Department of Energy (DOE) for providing useful documents for preparation of the dictionary. Also thanks to Prof. Charles Ochola, Villanova University, Prof. Tae-Hyung Kim, Korea Maritime University, Ms. Eleanor S. Nothelfer of Fritz Engineering Laboratory, Lehigh University and Mr. Gustavo Borel Menezes of Global Institute for Energy and Environmental Systems (GIEES), University of North Carolina at Charlotte for their assistance during various phases of preparation of the manuscript.
Acknowledgment is made to Review Committee Members for their time and willingness to review the manuscripts.

Prof. Ronald C. Chaney, Humboldt State University, Arcata, CA
Prof. John L. Daniels, The University of North Carolina at Charlotte, NC
Prof. Jeffrey C. Evans, Bucknell University, Lewisburg, PA
Prof. T. Cassia De Brito Galvao, Universidade Federal de Minas Gerais, BRAZIL
Prof. Hilary I. Inyang, The University of North Carolina at Charlotte, NC
Dr. Abidin Kaya, URS Corporation, Honolulu, HI
Prof. Jai-Young Lee, The University of Seoul, KOREA
Prof. Irene M.C. Lo, Hong Kong University of Science & Technology, Hong Kong
Prof. Horace K. Moo-Young Jr., Villanova University, PA
Dr. Jouko Saarela, Finnish Environmental Institute, FINLAND
Prof. Robert W. Sarsby, The University of Wolverhampton, U.K.
Prof. Leonardo Zeevaert, Universidad Nacional Automoma de Mexico, MEXICO
Prof. Thomas F. Zimmie, Rensselaer Polytechnic Institute, NY

Hsai-Yang Fang
February 15, 2006

Web Edition by:
Gustavo Borel Menezes, GIEES, UNC Charlotte
Simon Chung, GIEES, UNC Charlotte

Developed by: Gustavo Borel Menezes