m - meter
MAB - Man and Biosphere Program
MAC - Management Advisory Committee
MAC - Mobile air Conditioner
MACRO - Macro Encapsulation
MACT - Maximum Available (or Achievable) Control Technology
MADCAP - Model of Advection, Diffusion and Chemistry for
Air Pollution
MAER - Maximum Allowable Emission Rate
MAG - Management Advisory Group
MAJCOM - Major Commands
MAP - Management Assistance Program
MAP - Motorist Assistance Patrol
MAPC - Manpower Model for Control Agencies
MAPPER - Maintaing, Preparing and Producing Executive Reports
MAPPPS - Multi-state Atmospheric Power Production Pollution Study
MAPS - Region 2 Environmental Map Catalogue System
MAPSIM - Mesoscale Air Pollution Simulation Model
MAR - Management System Review
MARC - Mining and Reclamation Council
MASBAL - RCRA Mass Balance System
MATC - Maximum Allowable Toxicant Concentration
MAWP - Maximum Allowable Working Pressure
MAX - Maximum
MAXDOSE - Maximum Individual Dose Model
MB - Mass Balance
MBAS - Methylene-Blue-Active Substances
MBDA - Minority Business Development Agency
MBE - Minority Business Enterprise
MBER - Minority Business Enterprise Representative
MBE/WBE - Certification Questionnaire - Minority/Woman Business Enterprise
MBEP - Region 4 Minority Business Tracking
MBER - Minority Business Enterprise Representative
MBF - Matrix Biological Film
MBO - Management By Objectives
MC - Multiple Cyclone
MCA - Manufacturing Chemists Association
MCAWW - Methods for Chemical Analysis of Water and Wastes
MCC-IP - Materials Characterization Center Static Leach Test
MCD - Municipal Construction Division
MCDF - Master Code Descriptor File
MCEF - Mixed Cellulose Ester Filter
MCF - Methyl Chloroform
MCIA - Methyl Chloride Industry Alliance
MCL - Maximum Contaminant Level
MCLG - Maximum Contaminant Level Goal
MCP - Municipal Compliance Plan
MCS - Multiple Chemical Sensitivity
MD - Mail Drop
MD - Management Division
MDA - Methylenedianiline
MDAAQS - Miscellaneous Data Analysis and Air Quality Simulation Studies
MDAD - Monitoring and Data Analysis Division
MDD - Management Division Director
MDEQ - Massachusetts Department of Environmental Quality
MDL - Method Detection Limit (Level)
MDS - Modifications
MDS - Multimedia Design Studio
MDSD - Monitoring and Data Support Division
MEC - Model Energy Code
MECA - Manufacturers of Emission Controls Association
MED - Minimum Effective Dose
MEFR - Maximum Expiratory Flow Rate
MEFS - Midterm Energy Forecasting System
MEHP - Monoethylhexyl phthalate
MEI - Maximum (Most) Exposed Individual
MEK - Methyl Ethyl Ketone
MEM - Modal Emission Model
MENS - Mission Element Needs Statement
MEP - Maximum Extent Practicable
MEP - Multiple Extraction Procedure
MERL - Municipal Environmental Research Laboratory
MES - Modal Emission Model
MESOPAC - MesoscaleMeteorological Preprocessor Program
MESOPLUME - Mesoscale "Bent Plume" Model
MESOPUFF - Mesoscale Puff Model
MESS - Model Evaluation Support System
METH - Methylene Chloride
METL - Metals Data Base
METL - Region 4 Metals System
MEXAMS - Metals Exposure Analysis Modeling System
MF - Modifying Factor
MFBI - Major Fuel Burning Installation
MFC - Metal Finishing Category
MFD - Municipal Facilities Division
mg - Milligram(s)
Mg - Megagram
MGD - Millions of Gallons per Day
mg/dscm - Milligrams per dry standard cubic meter
mg/kg - Milligrams per Kilogram
mg/l - Milligrams per Liter
mg/m3 - Milligrams per Cubic Meter
Mg/yr - Megagrams per year
MH - Man-Hours
MHD - Magnetohydrodynamics
MHDDV - Medium Heavy Duty Diesel Vehicle
MHRA - Maximum Hourly Rolling Average
MIBK - Methyl Isobutyl Ketone
MIC - Master Item Code
MIC - Methyl Isocyanate
MICE - Management Information Capability for Enforcement
MICROMORT - A One-in-a-Million Chance of Death From an Environmental Hazard
MICTS - Management Information Cost Tracking System
MIDSD - Management Information and Data Systems Division
M&IE - Meals and Incidental Expenses
MIN - Minimum
MINTEQ - Geochemical Model
MIPR - Military Interagency Procurement Request
MIPS - Millions of Instructions Per Second
MIR - Maximum Individual Risk
MIS - Management Information System
MIS - Mineral Industry Surveys
MISTT - Midwest Interstate Sulfur Transformation and Transport
MISWD - Municipal and Industrial Solid Waste Division
MITS - Management Information Tracking System
MJ - Megajoule
ML - Meteorology Laboratory
ML - Military Leave
mL - Millileter
MLAP - Migrant Legal Action Program
MLE - Maximum Likelihood Estimates
MLSS - Mixed Liquor Suspended Solids
MLVSS - Mixed Liquor Volatile Suspended Solids
M Medium - Amount of carrier medium material applied to the skin
MMD - Mass median Diameter
MMS - Minerals Management Service
MMT - Million Metric Tons
MOA - Memorandum of Agreement
MOBILE - Mobile Source Emission Model
MOBILE5A - Mobile Source Emission Factor Model
MOCERT - Motorcycle Certification Data
MOCS - MacPhail Operant Chambers
MOD - Management and Organization Division
MOD - Manufacturers Operations Division
MOD - Marine Operations Division
MOD - Miscellaneous Obligation Document
MOD - Modification
MODHIWAY - Modified Highway Program
MOE - Margin of Exposure
MOI - Memorandum of Intent
MOI - Memorandum of Information
MONARC - Master Office Network Adaptive Real-time Control
MORT - Research Triangle Park Mortality Data Base
MOS - Management Operations Staff
MOS - Management Operations Staff
MOS - Margin of Safety
MOTRON - MacPhail Motron System
MOU - Memorandum of Understanding
MP - Manufacturing-use Product
MP - Melting Point
MPCA - Microbial Pest Control Agent
MPES - Management Planning and Evaluation Staff
MPI - Maximum Permitted Intake
MPN - Maximum Possible Number
MPN - Most Probable Number
MPP - Merit Promotion Number
MPRM - Meteorological Processor for regulatory models
MPRSA - Marine Protection, Research and Sanctuaries Act (1972)
MPS2 - Region 2 Merit pay System
MPTDS - MPTER Model with Deposition and Settling of Pollutants
MPTER - Multiple Point Source Model with Terrain
MPTER - Air quality model for multiple point source Gaussian dispersion algorithm with terrain adjustments
MPWC - Multiprocess Wet Cleaning
MRA - Minimum Retirement Age
MRAM - MacPhail Radial Arm Maze
MREM - Milliroentgen Equivalent in Man
MRF - Materials Recovery Facility
MRI - Midwest Research Institute
MRID - Master Record Identification Number
MRL - Maximum-Residue Limit (Pesticide Tolerance)
MRL - Minimum Risk Level
MRP - Multi-Roller Press
MS - Mail Stop
MS - Management Staff
MS - Mass Spectrometry
MS - Matrix Spike
MS - Multilateral Staff
MS4 - Municipal Separate Stormwater Systems
MSA - management System Audts
MSA - Metropolitan Statistical Areas
MSAM - Multi-keyed Indexed Sequential File Access Method
MSD - Management Systems Division
MSD - Matrix Spike Duplication
MSDS - Material Safety Data Sheet
MSEE - Major Source Enforcement Effort
MSHA - Mine Safety and Health Administration
MSIS - Model State Information System
MSL - Mean Sea Level
MSPB - Merit System Protection Board
MSRM - Mixture and Systemic Toxicant Risk Model
MSS - Management Support Staff
MSS - Management Systems Staff
MSW - Municipal Solid Waste
MSWL - Municipal Solid Waste Landfill
MSWL - Municipal Solid Waste Landfill Leachate
MSWLF - Municipal Solid Waste Landfill Facility
MT - Metric Ton
MTA - Mass Transit Authority
MTB - Materials Transportation Bureau
MTBE - Methyl Tertiary Butyl Ether
MTD - Maximum Tolerated Dose
MTDDIS - Mesoscale Transport Diffusion and Deposition Model for Industrial Sources
MTEC - Maximum Theoretical Emissions Concentration
MTG - Media Task Group
MTR - Marine Transportation related
MTR - Minimum Technology Requirement
MTS - Management Tracking System
MTSL - Monitoring and Technical Support Laboratory
MTU - Mobile Treatment Unit
MUP - Manufacturing-use Product
MUSWTCH - Mussel Watch
MUTA - Mutagenicity
MVA - Multivariate Analysis
MVAPCA - Motor Vehicle Air Pollution Control Act
MVEL - Motor Vehicle Emissions Laboratory
MVICSA - Motor Vehicle Information and Cost Savings Act
MVI/M - Motor Vehicle Inspection/Maintenance
MVMA - Motor Vehicle Manufacturers Association
MVRS - Marine Vapor Recovery System
MVS - Multiple Virtual System
MVTS - Motor Vehicle Tampering Survey
MW - Megawatt
MW - Molecular Weight
MW - Mixed Waste
MWC - Machine Wet Cleaning
MWC - Municipal Waste Combustor
MWG - Model Work Group
MWI - Medical Waste Incinerator
MWL - Municipal Waste Leachate
MWTA - Medical Waste Tracking Act
MYDP - Multiyear Development Plans
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