Complete Information about Environment

A
Abandoned well Abatement Abatement debris
Absorbed dose Absorption Absorption barrier
Acceptable daily Intake Accident site Acclimatization
Acid aerosol Acid deposition Acid mine drainage
Acid neutralizing capacity Acid rain Acidic
Acidification Action levels Activated carbon
Activated sludge Activated sludge process Activator
Active ingredient Activity plans Acute effect
Acute exposure Acute toxicity Adaptation
Additive Additive effect Add-on control device
Adequately wet Administered dose Administrative order
Administrative procedures act Administrative record Adsorption
Adulterants Adulterated Advanced treatment
Advanced wastewater treatment Adverse effects data Advisory
Aerated lagoon Aeration Aeration tank
Aerobic Aerobic treatment Aerosol
Affected landfill Affected public Afforestation
Afterburner Age tank Agent
Agent orange Aggregate Agricultural pollution
Agricultural waste Agrochemical Agroecosystem
Ahera designated person Air Air binding
Air changes per hour Air cleaning Air contaminant
Air curtain Air emissions Air exchange rate
Air gap Air handling unit Air mass
Air monitoring Air padding Air permeability
Air plenum Air pollutant Air pollution
Air pollution control device Air pollution episode Air quality control region
Air quality criteria Air quality standards Air sparging
Air stripping Air toxics Airborne particulates
Airborne release Alachlor Alar
Aldicarb Algae Algal bloom
Algal blooms Algicide Aliquot
Alkali Alkaline Alkalinity
Allergen Alluvial Alpha radiation
Alternate method Alternative compliance Alternative energy
Alternative fuels Ambient air Ambient air quality standards
Ambient measurement Ambient medium Ambient temperature
Amendment Amprometric titration Anaerobic
Anaerobic decomposition Ancient forest Animal dander
Animal studies Anisotropy Antagonism
Anti-degradation clause Anti-microbial Applied dose
Appropriation Aquaculture Aquatic ecosystem
Aqueous Aqueous solubility Aquifer
Aquifer test Aquitard Architectural coatings
Area of review Area source Arms control
Aromatic Aromatics Arsenicals
Artesian Asbestos Asbestos abatement
Asbestos assessment Asbestos program manager Asbestosis
A-scale sound level Ash Assay
Assessment endpoint Assimilation Assimilative capacity
Asthma Atmosphere Atomic energy
Attainment area Attenuation Attractant
Attrition Availability session Available chlorine
Avoided cost 

B
Back pressure Back siphonage Backflow
Background level Background radiation Backwashing
Backyard composting Bacteria Baffle
Baffle chamber Baghouse filter Bailer
Baling Ballistic separator Band application
Banking Bar screen Barrel sampler
Barrier coating Basal application Basalt
Bean sheet Bed load Bedrock
BEN Bench-scale tests Benefit analysis
Benefit-cost analysis Benthic Benthos
Bentonite Berm Beryllium
Best available technology Best management practice Best management practices
Beta particle activity Bill Bimetal
Bioaccumulants Bioassay Bioaugmentation
Bioavailabiliity Biochemical oxygen demand Bioconcentration
Biodegradable Biodiversity Biological contaminants
Biological control Biological integrity Biological magnification
Biological measurement Biological medium Biological oxidation
Biological oxygen demand Biological stressors Biological treatment
Biologicals Biologically effective dose Biomass
Biome Biomonitoring Bioremediation
Biosensor Biosphere Biosphere Reserve
Biostabilizer Biota Biotechnology
Biotic Biotic community Biotransformation
Birth control Birth defects Birth rate
Black water Blackwater Bleaching
Bloc Blood lead levels Blood products
Bloom BOD5 Body burden
Bog Boiler Boom
Borehole Botanical pesticide Bottle bill
Bottled water Bottom ash Bottom land hardwoods
Bounding estimate Brackish Breakpoint chlorination
Breakthrough Breathing zone Brine mud
British thermal unit Broadcast application Brownfields
Bubble Bubble policy Budget
Budget reconciliation Buffer Buffer strips
Building cooling load Building envelope Building related illness
Bulk sample Bulky waste Burial ground
Bush Fire Buy-back center By-product

C
Cadmium Calendar Cancellation
Cancer Cap Capacity assurance plan
Capillary action Capillary fringe Capture efficiency
Carbon absorber Carbon adsorption Carbon dioxide
Carbon dioxide emission Carbon monoxide Carbon tax
Carbon tetrachloride Carboxyhemoglobin Carcinogen
Carcinogens Carpooling Carrier
Carrying capacity Cas registration number Case study
Cask Catalyst Catalytic converter
Catalytic incinerator Catchment Categorical exclusion
Cathodic protection Cavitation Cells
Cementitious Central collection point Centrifugal collector
CFC Chamber Channelization
Characteristic Characterization of exposure Check-valve tubing pump
Chelation Chemical case Chemical compound
Chemical element Chemical oxygen demand Chemical stressors
Chemical treatment Chemnet Chemosterilant
Chemtrec Chernobyl Child resistant packaging
Chiller Chilling effect Chip
Chisel plowing Chlorinated hydrocarbons Chlorinated solvent
Chlorination Chlorinator Chlorine
Chlorine-contact chamber Chlorofluorocarbons Chlorophenoxy
Chlorophyll Chlorosis Cholinesterase
Chromium Chronic effect Chronic exposure
Chronic toxicity Circle of influence Cistern
Clarifer Clarification Clarifier
Class i area Class i substance Class ii substance
Clay Clay soil Clean coal technology
Clean fuel Clean fuels Cleanup
Clear cut Clear well Clearcut
Clearcutting Climate change Cloning
Closed-loop recycling Closure Coagulants
Coagulation Coal Coal cleaning technology
Coal gasification Coastal zone Code of federal regulations
Coefficient of haze Co-fire Cogeneration
Cohesion Coke oven Cold temperature co
Coliform index Coliform organism Collector
Collector sewers Colloids Combined sewer overflows
Combined sewers Combustion Combustion chamber
Combustion product Command post Comment period
Commercial Commercial waste Commingled recyclables
Comminuter Comminution Common sense initiative
Community Community relations Community right-to-know
Community water system Compact fluorescent lamp Compaction
Comparative risk assessment Complete treatment Compliance coal
Compliance coating Compliance cycle Compliance monitoring
Compliance schedule Components Composite sample
Compost Composting Composting facilities
Compounds Compressed natural gas Concentration
Condensate Condensate return system Condensation
Conditional registration Conductance Conductivity
Cone of depression Cone of influence Cone penterometer testing
Confined aquifer Confluent growth Congressional Record
Consent decree Conservation Conservation easement
Conserve Constituent Construction ban
Consumptive use Consumptive water use Contact pesticide
Contaminant Contamination Contingency plan
Continuous discharge Continuous sample Contour farming
Contour plowing Contour strip farming Contract labs
Control technique guidelines Controlled reaction Conventional filtration
Conventional pollutants Conventional site assessment Conventional systems
Conventional tillage Conventional tilling Conveyance loss
Cooling electricity use Cooling tower Cooling water
Cooperative agreement Coral reef degradation Core
Corrective action Corridors Corrosion
Corrosive Cost Cost recovery
Cost sharing Cost-effective alternative Cover crop
Cover material Creek Criteria
Criteria pollutants Critical effect Critical habitat
Critical mass Crop consumptive use Crop rotation
Cropland Cross contamination Cross-connection
Crumb rubber Cryptosporidium Cubic feet per minute
Cullet Cultural eutrophication Cultures and stocks
Cumulative exposure Curb stop Curbside collection
Curie Cutie-pie Cuttings
Cyclone collector 

D
Data call-in Data quality objectives Day tank
DDT Dead end Deadmen
Decant Decay products Dechlorination
Decibel Decomposition Decontamination
Deep well injection Deep-well injection Deflocculating agent
Defluoridation Defoliant Deforestation
Degasification Degradable Degradation
Degree-day Delegated state Delist
Demand-side waste management Demineralization Denitrification
Density Depletion curve Depressurization
Dermal absorption Dermal exposure Dermal toxicity
DES Desalination Desertification
Desiccant Design capacity Design value
Designated pollutant Designated uses Designer bugs
Destination facility Destratification Destroyed medical waste
Destruction facility Desulfurization Detectable leak rate
Detection criterion Detection limit Detention time
Detergent Detritus Development
Development effects Dewater Diatomaceous earth
Diazinon Dibenzofurans Dicofol
Diesel Diesel engine Diffused air
Diffusion Digester Digestion
Dike Diluent Dilution ratio
Dimictic Dinocap Dinoseb
Dioxin Direct discharger Direct filtration
Direct push Direct runoff Discharge
Disinfectant Disinfectant by-product Disinfectant time
Dispersant Displacement savings Disposable
Disposables Disposal Disposal facilities
Dissolved oxygen Dissolved solids Distillation
Disturbance Diversion Diversion rate
Dna hybridization Dobson unit Domestic application
Dosage Dose Dose equivalent
Dose rate Dose response Dose response curve
Dose-response assessment Dose-response relationship Dosimeter
Dot reportable quantity Downgradienat Downgradient
Downstream processors Dp hole Draft
Draft permit Drainage Drainage basin
Drainage well Drawdown Dredge
Dredging Drilling fluid Drive casing
Drive point profiler Drop-off Dual-phase extraction
Dump Dump sites Dumping
Dumping ground Duplicate Durable
Dustfall jar Dystrophic lakes 

E
Ecological Ecological entity Ecological exposure
Ecological impact Ecological indicator Ecological integrity
Ecological processes Ecological risk Ecological risk assessment
Ecologist Ecology Economic
Economic poisons Economical Ecosphere
Ecosystem Ecosystem structure Ecotone
Efficiency Effluent Effluent guidelines
Effluent limitation Effluent standard Ejector
Electric vehicles Electrodialysis Electrolyte
Electrostatic precipitator Eligible costs Emap data
Emergency Emergency episode Emergency exemption
Emergency removal action Emergency response values Emergency suspension
Emission Emission cap Emission factor
Emission inventory Emission standard Emissions cap
Emissions trading Emulsifier Encapsulation
Enclosure End user Endangered species
Endangerment assessment Endemic Endocrine disruptors
End-of-the-pipe Endrin End-use product
Energy conservation Energy efficiency Energy management system
Energy recovery Enforceable requirements Enforcement
Enforcement decision document Engineered controls Enrichment
Enteric Entrain Environment
Environmental Environmental assessment Environmental audit
Environmental equity Environmental exposure Environmental fate
Environmental fate data Environmental hazard Environmental indicator
Environmental issues Environmental lien Environmental medium
Environmental problem Environmental protection Environmental Protection Agency
Environmental Reporting Environmental response team Environmental site assessment
Environmental sustainability Environmental technology Environmental tobacco smoke
Environmentalism Environmentalist Environmentally friendly
Enzyme Epidemic Epidemiology
Epilimnion Episode Equilibrium
Equity Equivalent method Erosion
Estuary Ethanol Ethylene dibromide
Eugenics Eutrophic lakes Eutrophication
Evaporation Evaporation ponds Evapotranspiration
Everglades Ex situ Exceedance
Exclusion Exclusionary ordinance Exempt solvent
Exempted aquifer Exemption Exhaust fume
Exotic species Experimental use permit Explosive limits
Exports Exposure Exposure assessment
Exposure concentration Exposure indicator Exposure level
Exposure pathway Exposure route Extinct
Extinction Extraction procedure Extraction well

F
Fabric filter Facilities plans Factory farming
Facultative Facultative bacteria Fallout
Family planning Famine Farmland
Fauna Feasibility study Fecal coliform bacteria
Federal implementation plan Federal land Feedlot
Feedlots Feedstock Fen
Ferrous metals Fertility Fertilizer
Fiber Field capacity Fifra pesticide ingredient
Fill Filling Filter strip
Filtration Finished water Fire regime
First draw Fiscal year Fish kill
Fisheries Fishery Fissile material
Fission Fix a sample Fixed-location monitoring
Flammable Flare Flash point
Floc Flocculation Floodplain
Floor sweep Flora Flow rate
Flowable Flowmeter Flue gas
Flue gas desulfurization Fluidized Fluidized bed incinerator
Flume Fluoridation Fluorides
Fluorocarbons Flush Flux
Fly ash Fogging Food chain
Food processing waste Food waste Food web
Forestry Forests Formaldehyde
Formulation Fossil fuel Fossil fuels
Fracture Free product Freeboard
Fresh water Friable Friable asbestos
Fuel Fuel economy standard Fuel efficiency
Fuel management Fuel switching Fugitive emissions
Fume Fumigant Functional equivalent
Fungi Fungicide Fungistat
Fungus Furrow irrigation Future liability

G
Galvanize Game fish Gamma rays
Garbage Garbage can Gas
Gas chromatograph Gasahol Gaseous waste
Gasification Gasohol Gasoline
Gasoline volatility Gastroenteritis General permit
General reporting facility Generally recognized as safe Generator
Genetic engineering Genotoxic Geographic information system
Geological log Geophysical log Geothermal
Germicide Giardia lamblia GIS
Glass containers Global warming Global warming potential
Glovebag Gooseneck Grab sample
Grain loading Gram Grasscycling
Grassed waterway Grassroots Gray water
Grazing Green design Greenhouse
Greenhouse effect Greenhouse gas Greenhouse gases
Greenway Grinder pump Gross alpha
Ground cover Ground source heat pump Ground water
Ground-penetrating radar Groundwater Ground-water discharge
Gully erosion Gypsum 

H
Habitat Habitat indicator Half-life
Halogen Halon Hammer mill
Hard water Harvest Hauler
Hazard Hazard assessment Hazard communication standard
Hazard evaluation Hazard identification Hazard quotient
Hazard ratio Hazardous air pollutants Hazardous chemical
Hazardous ranking system Hazardous substance Hazardous waste
Hazardous waste landfill Hazardous waste minimization Hazards analysis
Hazards identification Haze Headspace
Health advisory level Health assessment Health hazard
Hearings Heat island effect Heat pump
Heat wave Heavy metal Heavy metals
Heptachlor Herbaceous Herbicide
Herbivore Heterotrophic microorganisms Heterotrophic organisms
High end exposure High intensity discharge High seas
High-density polyethylene Highest dose tested High-level
High-level radioactive waste High-line jumpers High-risk community
Histology Holding pond Holding time
Hollow stem auger drilling Homeowner water system Homogeneous area
Hood capture efficiency Host Hot spot
Household hazardous waste Household waste Human equivalent dose
Human exposure evaluation Human health risk Humus
Hydraulic conductivity Hydraulic gradient Hydrocarbon
Hydrocarbons Hydrochlorination Hydroelectric
Hydrofluorocarbons Hydrogen peroxide Hydrogen sulfide
Hydrogeological cycle Hydrogeology Hydrologic cycle
Hydrology Hydrolysis Hydronic
Hydrophilic Hydrophobic Hydropneumatic
Hydropower Hypersensitivity diseases Hypolimnion
Hypoxia Hypoxic Hypoxic waters

I
Ignitable Illegal IM240
Imhoff cone Imminent hazard Imminent threat
Immiscibility Impermeable Imports
Impoundment In situ In vitro
In vivo Incentive Incident command post
Incident command system Incineration Incineration at sea
Incinerator Incinerators Incompatible waste
Indemnification Indicator Indigenous
Indigenous peoples Indirect discharge Indirect source
Indoor air Indoor air pollution Indoor climate
Industrial emissions Industrial process waste Industrial sludge
Industrial source reduction Industrial waste Industrialized countries
Inert ingredient Inertial separator Infectious agent
Infectious waste Infiltration Infiltration gallery
Infiltration rate Inflow Influent
Information file Ingestion Inhalable particles
Inhalation Initial compliance period Injection well
Injection zone In-line filtration Innovative technologies
Inoculum Inorganic Inorganic chemicals
Insecticide Insecticides In-situ flushing
In-situ oxidation In-situ stripping In-situ vitrification
Inspection Inspection and maintenance Institutional waste
Instream use Integrated pest management Integrated waste management
Interceptor sewers Interface Interfacial tension
Interim Internal dose Interstate commerce clause
Interstate waters Interstitial monitoring Intrastate product
Inventory Inversion Ion
Ion exchange treatment Ionization chamber Ionizing radiation
IRIS Irradiated food Irradiation
Irreversible effect Irrigation Irrigation efficiency
Irrigation return flow Irritant Islands
Isoconcentration Isopleth Isotope
Isotropy 

J
Jar test Joint and several liability Justice

K
Karst Kinetic energy Kinetic rate coefficient

L
L) Laboratory animal studies Lagoon
Lakes Land application Land ban
Land disposal restrictions Land farming Land use
Landfill Landfill site Landfills
Landings Landscape Landscape characterization
Landscape ecology Landscape indicator Langelier index
Large quantity generator Large water system Laser induced fluorescence
Latency Lateral sewers Laundering weir
Law LC 50 LD 50
Ldlo Leachate Leachate collection system
Leaching Lead Lead poisoning
Lead service line Legionella Lesion
Lethal Lethal concentration Lethal dose
Leukemia Level of concern Life cycle assessment
Life cycle of a product Lifetime average daily dose Lifetime exposure
Lift Lifting station Light pollution
Light-emitting diode Limestone scrubbing Limit of detection
Limited degradation Limiting factor Limnology
Lindane Liner Lipid solubility
Liquefaction Liquid injection incinerator Liquid waste
List Listed waste Lithology
Litter Littoral zone Local education agency
Logging Low density polyethylene Low emissivity
Low nox burners Low-emission vehicles Lower detection limit
Lower explosive limit Lowest acceptable daily dose Low-level radioactive waste
Low-level waste Lumber Lung diseases
Lymphoma 

M
Macropores Macroscopic organisms Magnetic separation
Major modification Major stationary sources Majors
Malignant Malthusian Mammal
Managed lands Management plan Managerial controls
Manatee Mandatory recycling Manifest
Manifest system Man-made Manual separation
Manufacturing use product Margin of exposure Margin of safety
Marine mammal Marine sanitation device Marsh
Mass spectrometer Mass transit Material category
Material safety data sheet Material type Materials recovery facility
Maximally Maximum contaminant level Maximum exposure range
Maximum residue level Maximum tolerated dose Measure of effect
Measure of exposure Measurement endpoint Mechanical aeration
Mechanical separation Mechanical turbulence Media
Medical surveillance Medical waste Medium-size water system
Meniscus Mercury Mesotrophic
Metabolism Metabolites Metalimnion
Metastatic Meteorology Methane
Methanol Method 18 Method 24
Method 25 Method detection limit Methoxychlor
Methyl bromide Methyl orange alkalinity Microbial growth
Microbial pesticide Microclimate Microcosm
Microenvironmental method Microenvironments Micrograms per liter
Micron Microorganisms Million-gallons per day
Mineralization Minimization Mining
Mining of an aquifer Mining waste Minor source
Minors Minuteman Miscellaneous acm
Miscellaneous materials Miscible liquids Missed detection
Mist Mitigation Mixed funding
Mixed glass Mixed liquor Mixed metals
Mixed municipal waste Mixed paper Mixed plastic
Mobile incinerator systems Mobile source Model plant
Modeling Modified bin method Modified source
Moisture content Molecular weight Molecule
Molten salt reactor Monitor Monitoring
Monitoring well Monitoring wells Monoclonal antibodies
Monomictic Montreal protocol Moratorium
Morbidity Mortality Most probable number
Motile Muck Muck soils
Mudballs Mulch Multi-media approach
Multiple chemical sensitivity Multiple use Multistage remote sensing
Municipal discharge Municipal sewage Municipal sludge
Municipal solid waste Municipal waste Mutagen
Mutagenicity 

N
National National ambient air National emissions
National estuary program National municipal plan National oil and
National pollutant National priorities list National response center
National response team National secondary Natural environment
Natural gas Nature conservation Navigable waters
Necrosis Negotiations Nematocide
Nematodes Neoplasm Nephelometric
Netting Neurotoxicity Neutralization
New source New source review Nitrate
Nitric oxide Nitrification Nitrilotriacetic acid
Nitrite Nitrogen Nitrogen dioxide
Nitrogen fixation Nitrogen oxide Nitrogen oxides
Nitrogenous Nitrogenous wastes Nitrophenols
No further remedial No observable No till
Noble metal Noise Noise pollution
Non-aqueous phase liquid Non-attainment area Non-community water system
Non-compliance coal Non-conventional pollutant Non-degradation
Non-ferrous metals Nonhazardous industrial Nonhazardous industrial waste
Non-methane hydrocarbon Non-methane organic Non-methane organic gases
Non-point source Non-point sources Non-point-source pollution
Non-potable Non-road emissions No-observed-effect-level
Notice of deficiency Notice of intent to Notice of intent to cancel
Notice of intent to deny Notice of intent to suspend Nuclear energy
Nuclear power Nuclear power plant Nuclear reactor
Nuclear reactors and Nuclear tests Nuclear waste
Nuclear winter Nuclide Nutrient
Nutrient pollution Nutrients 

O
Obligate anaerobes Ocean discharge waiver Ocean dumping
Oceanography Odor threshold Office paper
Offsets Off-site facility Offstream use
Oil Oil and gas waste Oil fingerprinting
Oil spill Oil spills Oil table
Old growth forests Old-growth forest Olfactory fatigue
Oligotrophic Oligotrophic lakes Onboard controls
Oncology Onconogenicity One-hit model
On-scene coordinator On-site facility Opacity
Open burning Open dump Operable unit
Operating conditions Operation and maintenance Operator certification
Oral toxicity Organic Organic chemicals
Organic matter Organism Organophosphates
Organophyllic Original ahera inspection Original generation point
Original inspection Osmosis Other paper
Other plastics Other solid waste Other wood
Outdoor air supply Outfall Overburden
Overdraft Overfire air Overfishing
Over-fishing Overflow rate Overgrazing
Overland flow Overturn Oxidant
Oxidation Oxidation pond Oxidation-reduction potential
Oxygen Oxygenated fuels Oxygenated solvent
Ozonation Ozonator Ozone
Ozone depletion Ozone hole Ozone layer

P
Packaging Packed bed scrubber Packed tower
Packed tower aeration Packer Palatable water
Pandemic Paper Paper mills
Paper products Paperboard Parameter
Paraquat Parshall flume Participation rate
Particle count Particulate Particulate loading
Particulate matter Particulate pollution Particulates
Partition coefficient Parts per billion Passive smoking
Passive solar Passive treatment walls Pathogen
Pathogens Pathology Pathway
Peak levels Peat Penetration
Percent saturatiuon Perched water Percolating water
Percolation Performance data Performance standards
Periphyton Permeability Permissible dose
Permit Persistence Persistent pesticides
Personal measurement Personal protective equipment Pest
Pest control operator Pesticide Pesticide regulation notice
Pesticides PETE Petroleum
Petroleum derivatives Ph Pharmacokinetics
Phenolphthalein alkalinity Phenols Phosphate
Phosphates Phosphorus Phosphorus plants
Photochemical oxidants Photochemical smog Photosynthesis
Phytoplankton Phytoremediation Phytotoxic
Pico Picocurie Picocuries per liter
Picocuries per liter pci Piezometer Plankton
Plasma-arc reactor Plasmid Plastics
Plug flow Plugging Plume
Plutonium PM10 PM-10
PM-2.5 Pneumoconiosis Point source
Point-of-use treatment device Point-source pollution Poison
Poisonous Pollen Pollutant
Pollutant standard index Polluted runoff Polluter
Pollution Pollution prevention Polonium
Polychlorinated biphenyls Polyelectrolytes Polymer
Polyvinyl chloride Population Population at risk
Population growth Porosity Portal-of-entry effect
Post-chlorination Post-consumer materials Post-consumer recycling
Potable water Potential dose Potentially responsible party
Potentiation Potentiometric surface Power plants
Power station Ppm Precautionary principle
Prechlorination Precipitate Precipitation
Precipitator Precursor Predation
Pre-harvest interval Preliminary assessment Prescribed burn
Prescriptive Pressed wood products Pressure sewers
Pretreatment Prevalence study Prevalent level samples
Prevalent levels Primacy Primary effect
Primary standards Primary waste treatment Prions
Prior appropriation Probability of detection Process variable
Process verification Process wastewater Process weight
Producers Product level Product water
Project xl Propellant Proportionate mortality ratio
Proposed plan Proteins Protocol
Protoplast Protozoa Public comment period
Public health Public hearing Public land
Public notice Public transportation Public water system
Pulp Pumping station Pumping test
Purging Putrefaction Putrescible
Pyrolysis 

Q
Qualitative use assessment Quality assurance Quality control
Quarry Quench tank Quicklime

R
Radiation Radiation standards Radical
Radio frequency radiation Radioactive Radioactive decay
Radioactive substances Radioactive waste Radioactivity
Radioisotopes Radionuclide Radius of influence
Radon Radon daughters Radon daughters/radon progeny
Radon decay products Radon progeny Rain forest
Rainforest Rangeland Ranney collector
Rasp Raw agricultural commodity Raw sewage
Raw water Reactivity Reaeration
Reagent Real-time monitoring Reasonable further progress
Reasonable maximum exposure Reasonable worst case Recarbonation
Recarbonization Receiving waters Receptor
Recess Recharge Recharge area
Recharge rate Reclamation Recombinant dna
Reconstructed source Record of decision Recovery rate
Recycle Recycling Recycling mill
Red bag waste Red border Red tide
Reduce Reduction Re-entry
Reentry interval Reference dose Reforestation
Reformulated gasoline Refrigerants Refueling emissions
Refuse Refuse reclamation Regeneration
Region Regional response team Registrant
Registration Registration standards Regulated medical waste
Relative permeability Relative risk assessment Release
Rem Remedial action Remedial design
Remedial investigation Remedial project manager Remedial response
Remediation Remote sensing Removal action
Renewable energy Renewable resource Repeat compliance period
Reportable quantity Repowering Representative sample
Reregistration Reservoir Residential use
Residential waste Residual Residual risk
Residual saturation Residue Resistance
Resolution Resource recovery Respiration
Respiratory Response action Responsiveness summary
Restoration Restricted use Restriction enzymes
Retardation Retrofit Reuse
Reverse osmosis Reversible effect Ribonucleic acid
Rider Riffle Rill
Riparian Riparian habitat Riparian rights
Risk Risk assessment Risk characterization
Risk communication Risk estimate Risk factor
Risk management Risk-based targeting Risk-specific dose
River River basin Rodenticide
Rough fish Route of exposure Rubbish
Running losses Run-off Rural

S
Safe Safe water Safe yield
Safener Salinity Salinization
Salt water intrusion Salts Salvage
Salvage logging Sampling frequency Sanctions
Sand filters Sanitary landfill Sanitary sewer
Sanitary sewers Sanitary survey Sanitary water
Sanitation Saprolite Saprophytes
Saturated zone Saturation Scarcity
Science advisory board Scour Scrap
Scrap metal processor Screening Screening risk assessment
Scrubber Secondary effect Secondary materials
Secondary standards Secondary treatment Secondhand smoke
Secure chemical landfill Sedges Sediment
Sediment yield Sedimentation Sedimentation tanks
Sediments Seed protectant Seepage
Selective pesticide Semi-confined aquifer Senescence
Septic system Septic tank Sequestration
Service connector Service line sample Service pipe
Settleable solids Settling tank Sewage
Sewage lagoon Sewage sludge Sewer
Sewerage Sharps Shock load
Short-circuiting Sick building syndrome Signal
Signal words Significant deterioration Significant non-compliance
Significant violations Silos Silt
Siltation Silviculture Single-breath canister
Sink Sinking SIP
Sip call Site Site inspection
Siting Skimming Slag
Slake Slow sand filtration Sludge
Slurry Small quantity generator Smelter
Smog Smoke Soft detergents
Soft water Soil adsorption field Soil conditioner
Soil erodibility Soil erosion Soil gas
Soil moisture Soil profile Soil sterilant
Solar cell Solar energy Solder
Sole source aquifer Sole-source aquifer Solid waste
Solid waste disposal Solid waste management Solubility
Solution Soot Sorption
Sort Source area Source reduction
Source separation Source-water protection area Sparge
Sparge or sparging Speaker Special review
Special waste Species Species extinction
Specific conductance Specific yield Sphagnum
Spoil Spore Spotted owl
Sprawl Spray tower scrubber Spring
Spring melt Stabilization Stabilization ponds
Stable air Stack Stack effect
Stack gas Stage ii controls Stagnation
Stakeholder Standard sample Standards
State implementation plans State land State management plan
Static water depth Static water level Stationary source
Sterilization Sterilizer Stewardship
Stockpile Storage Storm sewer
Stormwater Stratification Stratigraphy
Stratosphere Stratum Streambed
Stressors Strip cropping Strip mining
Strip-mining Structural deformation Structure
Subchronic Submerged aquatic vegetation Subsidies
Subwatershed Suction Sulfate
Sulfur Sulfur dioxide Sulphate
Sulphur Sulphur dioxide Sulphur oxide
Sump Superchlorination Superfund
Supernatant Supersaturated Supplemental registration
Supplier of water Surface impoundment Surface runoff
Surface uranium mines Surface water Surfacing acm
Surfacing material Surfactant Surveillance system
Suspect material Suspended loads Suspended solids
Suspension Suspension culture Sustainable agriculture
Sustainable development Swamp Symbiosis
Synergism Synthetic organic chemicals Systemic effects
Systemic pesticide 

T
Table Tail water Tailings
Tailpipe standards Tampering Tap water
Technical assistance grant Technology-based limitations Technology-based standards
Teratogen Teratogenesis Terrace
Terracing Tertiary treatment Thaw
Therapeutic index Thermal pollution Thermal stratification
Thermal system insulation Thermal treatment Thermocline
Thermonuclear Threatened species Three Gorges
Threshold Threshold level Threshold limit value
Threshold odor Threshold planning quantity Thropic levels
Tidal marsh Tillage Timber
Time-weighted average Tipping fee Tire processor
Tires TNT Equivalent Tolerance
Tolerance petition Tolerances Tongass
Tonnage Topography Topsoil
Total dissolved solids Total petroleum hydrocarbons Total suspended particles
Total suspended solids Toxaphene Toxic
Toxic chemical Toxic cloud Toxic concentration
Toxic dose Toxic emissions Toxic metals
Toxic pollutants Toxic release inventory Toxic sites
Toxic substance Toxic substances Toxic waste
Toxicant Toxicants Toxicity
Toxicity assessment Toxicity testing Toxicological profile
Toxification Traffic calming Transboundary pollutants
Transfer station Transient water system Transit
Transmission lines Transmissivity Transpiration
Transportation Transportation planning Transporter
Trash Trash-to-energy plan Treatability studies
Treated wastewater Treatment Treatment plant
Tremie Trial burn Tributary
Trichloroethane Trichloroethylene Trickle irrigation
Trickling filter Trihalomethane Trip reduction
Trolling Troposhpere Troposphere
Trust fund Tube settler Tuberculation
Tundra Turbidimeter Turbidity

U
Ultra clean coal Ultraviolet rays Uncertainty factor
Unconfined aquifer Underground aquifer Underground injection control
Underground injection wells Underground storage tank Unleaded gas
Unpolluted Unreasonable risk Unsaturated
Unsaturated zone Unsustainable Upper detection limit
Uranium Urban Urban planning
Urban runoff Used oil User fee
Utilities Utility load 

V
Vadose zone Vapor Vapor density
Vapor dispersion Vapor plumes Vapor pressure
Variance Vector Vegetative controls
Vehicle miles travelled Ventilation Venturi scrubbers
Veto Vinyl chloride Virgin forest
Virgin materials Virus Viscosity
Volatile Volatile acids Volatile liquids
Volatile organic compound Volatile solids Volume reduction
Volumetric tank test Vortex Vulnerability analysis
Vulnerable zone 

W
Waste Waste characterization Waste collection
Waste disposal Waste exchange Waste feed
Waste generation Waste management Waste minimization
Waste piles Waste reduction Waste site
Waste stream Waste treatment lagoon Waste treatment plant
Waste treatment stream Waste water Waste-heat recovery
Wasteland Waste-to-energy facility Wastewater
Wastewater infrastructure Water budget Water cycle
Water pollution Water purveyor Water quality
Water quality criteria Water quality standard Water quality standards
Water solubility Water storage pond Water supplier
Water supply Water supply system Water table
Water treatment lagoon Water vapor Water well
Waterborne disease outbreak Waterlogging Watershed
Watershed area Weathering Weir
Well Well field Well injection
Well monitoring Well plug Wellhead
Wellhead protection area Wetland Wetlands
Wettability Wettable powder Wheeling
Wilderness Wilderness area Wildfire
Wildlife Wildlife refuge Wildlife refuges
Wind power Windpower Wire-to-wire efficiency
Wood packaging Wood treatment facility Woods Hole
Working level Working level month 

X
Xenobiota Xenobiote 

Y
Yard waste Yield 

Z
Zero air Zone of saturation Zooplankton