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Environment

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A
Abandoned wellAbatementAbatement debris
Absorbed doseAbsorptionAbsorption barrier
Acceptable daily IntakeAccident siteAcclimatization
ACHAcid aerosolAcid deposition
Acid mine drainageAcid neutralizing capacityAcid rain
AcidicAcidificationAction levels
Activated carbonActivated sludgeActivated sludge process
Active ingredientAcute effectAcute exposure
Acute toxicityAdaptationAdditive
Additive effectAdd-on control deviceAdjournment
Administered doseAdministrative orderAdministrative record
AdsorbentAdsorptionAdulterated
Advanced treatmentAdvanced wastewater treatmentAdvisory
Aerated lagoonAerationAeration tank
Aeration zoneAerobicAerobic treatment
AerosolAfforestationAfterburner
Age tankAgentAgent orange
AggregateAgricultural wasteAgrochemical
AgroecosystemAhera designated personAir
Air bindingAir changes per hourAir cleaning
Air contaminantAir curtainAir emissions
Air exchange rateAir gapAir handling unit
Air massAir monitoringAir permeability
Air pollutantAir pollutionAir pollution control device
Air pollution episodeAir quality control regionAir quality standards
Air spargingAir strippingAir toxics
Airborne particulatesAirborne releaseAlachlor
AldicarbAldrinAlgae
Algal bloomAlgal bloomsAlgicide
AliquotAlkaliAlkaline
AlkalinityAllergenAlluvial
Alternative complianceAlternative energyAlternative fuels
Alternative transportationAmbient airAmbient air quality standards
Ambient temperatureAmendmentAnaerobic
Anaerobic decompositionAncient forestAnimal dander
Animal studiesAnisotropyAntagonism
AntimicrobialAnti-microbialApplied dose
ApportionmentAppropriationAquaculture
Aquatic ecosystemAqueousAqueous solubility
AquicludeAquiferAquifer system
Aquifer testAquitardArea of influence
Area of reviewArea sourceArms control
AromaticAromaticsArsenicals
ArtesianArtesian aquiferArtesian well
Artificial rechargeAsbestosAsbestos abatement
Asbestos assessmentAsbestosisAsh
ASHRAEAssayAssessment endpoint
AssimilationAssimilative capacityAsthma
AtmosphereAtomic energyAttainment area
AttenuationAttractantAttrition
Availability sessionAvailable chlorineAvoided cost


B
Back siphonageBackflowBackground level
BackwashingBackyard compostingBacteria
Baghouse filterBailerBaling
BankingBar screenBarrier coating
BasaltBaseflowBed load
BedrockBENBench-scale tests
Benefit analysisBenefit-cost analysisBenthic
BenthosBentoniteBerm
BerylliumBest available technologyBest management practice
Best management practicesBeta particle activityBill
BillfishBimetalBioaccumulants
BioassayBioaugmentationBiochemical oxygen demand
BiochemicalsBiocideBioconcentration
BiodegradableBiodiversityBiological contaminants
Biological controlBiological diversityBiological integrity
Biological magnificationBiological measurementBiological medium
Biological oxidationBiological oxygen demandBiological treatment
BiologicalsBiomassBiome
BiomonitoringBioremediationBiosensor
BiosphereBiosphere ReserveBiota
BiotechnologyBioticBiotic community
BiotransformationBirth defectsBirth rate
Black waterBlackwaterBleaching
BlocBlood productsBloom
BODBOD5Body burden
BogBoilerBoom
BoreholeBotanical pesticideBottle bill
Bottled waterBottom ashBrackish
Breakpoint chlorinationBreakthroughBreathing zone
British thermal unitBrownfieldsBubble
Bubble policyBudgetBuffer
Buffer stripsBuilding cooling loadBuilding envelope
Building related illnessBuilding-related illnessBulky waste
Burial groundBycatchBycatch reduction device
By-product


C
CadmiumCalendarCancellation
CancerCapCapillary action
Capillary fringeCapillary waterCarbon absorber
Carbon adsorptionCarbon dioxideCarbon dioxide emission
Carbon monoxideCarbon taxCarbon tetrachloride
CarboxyhemoglobinCarcinogenCarcinogens
CarpoolingCarrierCarrying capacity
Case studyCatalystCatalytic converter
Catalytic incineratorCatchmentCategorical exclusion
Cathodic protectionCavitationCells
CementitiousCentral collection pointCFC
CFMChamberChaparral
CharacteristicChelationChemical compound
Chemical elementChemical oxygen demandChemical treatment
ChernobylChillerChip
Chisel plowingChlordaneChlorinated hydrocarbon insecticide
Chlorinated hydrocarbonsChlorinated solventChlorination
Chlorination byproductsChlorinatorChlorine
Chlorine-contact chamberChlorofluorocarbonsChlorophyll
CholinesteraseChromiumChronic effect
Chronic exposureChronic toxicityCistern
CITESClariferClarification
ClarifierClass i areaClass i substance
Class ii substanceClayClay soil
Clean coal technologyClean fuelClean fuels
CleanupClear cutClear well
ClearcutClearcuttingClimate change
Climax communityCloningClosed-loop recycling
ClosureCoagulantsCoagulation
CoalCoastal pelagicCoastal zone
Code of federal regulationsCoefficient of hazeCo-fire
CogenerationCohesionCoke oven
Coliform indexColiform organismCollection site
CollectorColloidsCombined sewer overflows
Combined sewersCombustionCombustion chamber
Combustion productCommand postComment period
CommercialCommercial extinctionCommercial waste
Commingled recyclablesComminutionCommissioning
Common sense initiativeCommunityCommunity relations
Community right-to-knowCommunity water systemCompact fluorescent lamp
Compact fluorescentsCompactionComplete treatment
Compliance coalCompliance cycleCompliance monitoring
ComponentsComposite sampleCompost
CompostingComposting facilitiesCompounds
Compressed natural gasConcentrationCondensate
Condensate return systemCondensationCondition
Conditional registrationConductanceConductivity
Cone of depressionCone of influenceConfined aquifer
Confining layerConfluent growthConsent decree
ConservationConservation easementConservation of natural resources
ConserveConsolidated rockConstituent
Construction banConsumptive useContact pesticide
ContaminantContaminationContingency plan
Continuous dischargeContinuous sampleContour farming
Contour plowingContour strip farmingContract labs
Control technique guidelinesConventional filtrationConventional pollutants
Conventional systemsConveyance lossCooling tower
Cooling waterCooperative agreementCo-products
CoreCorrective actionCorridors
CorrosionCorrosiveCost
Cost recoveryCost sharingCost-effective alternative
Cover cropCover materialCradle-to-cradle
Cradle-to-graveCreekCriteria
Criteria pollutantsCritical effectCritical habitat
Critical massCrop dustingCrop rotation
Crop varietiesCroplandCross contamination
Cross-connectionCrumb rubberCryptosporidium
Cubic feet per minuteCulletCultural eutrophication
Cultures and stocksCumulative exposureCurbside collection
CurieCutie-pieCuttings
Cyclone collector


D
Data call-inData quality objectivesDay tank
DDTDecantDecay products
Decay rateDechlorinationDecibel
DecompositionDecontaminationDeep well injection
Deep-well injectionDefluoridationDefoliant
DeforestationDegasificationDegradable
DegradationDegree-dayDemersal
DemineralizationDenitrificationDensity
DepletionDermal absorptionDermal exposure
Dermal toxicityDESDesalination
DesertificationDesiccantDesign capacity
Design valueDesignated pollutantDesignated uses
DestratificationDesulfurizationDetection limit
Detention timeDetergentDetritus
DevelopmentDewaterDiatomaceous earth
DiazinonDibenzofuransDieldrin
DieselDiesel engineDiffused air
DiffusionDigesterDigestion
DikeDiluentDilution ratio
DimicticDinocapDioxin
Direct dischargerDirect filtrationDirect push
Direct runoffDischargeDischarge area
DisinfectantDispersantDisposable
DisposablesDisposalDisposal facilities
Dissolved oxygenDissolved solidsDistillation
DisturbanceDiversionDiversion rate
Dna hybridizationDobson unitDosage
DoseDose equivalentDose rate
Dose responseDose-responseDose-response assessment
Dose-response relationshipDosimeterDowngradient
DraftDraft permitDrainage
Drainage basinDrawdownDredge
DredgingDriftnetDrilling fluid
Drop-offDroughtDump
Dump sitesDumpingDuplicate
DurableDystrophic lakes


E
Earth SummitEcologicalEcological entity
Ecological healthEcological impactEcological indicator
Ecological integrityEcological processesEcological risk
Ecological risk assessmentEcologistEcology
EconomicEconomicalEcosphere
EcosystemEcosystem structureEcotone
EfficiencyEffluentEffluent guidelines
Effluent limitationEffluent standardEjector
Electric vehiclesElectrodialysisElectrolyte
Electrostatic precipitatorEmergencyEmergency episode
Emergency response valuesEmergency suspensionEmission
Emission controlsEmission factorEmission inventory
Emission standardEmissionsEmissions cap
Emissions tradingEmulsifierEncapsulation
EnclosureEnd userEndangered species
Endangerment assessmentEndemicEndocrine disruptors
End-of-the-pipeEndrinEnd-use product
Energy conservationEnergy efficiencyEnergy management system
Energy recoveryEnforcementEnrichment
EntericEntrainEnvironment
EnvironmentalEnvironmental assessmentEnvironmental audit
Environmental equityEnvironmental exposureEnvironmental fate
Environmental fate dataEnvironmental footprintEnvironmental hazard
Environmental impactEnvironmental impact statementEnvironmental indicator
Environmental issuesEnvironmental lienEnvironmental medium
Environmental problemEnvironmental protectionEnvironmental Protection Agency
Environmental response teamEnvironmental site assessmentEnvironmental sustainability
Environmental technologyEnvironmental tobacco smokeEnvironmental values
EnvironmentalismEnvironmentalistEnvironmentally benign
Environmentally friendlyEnzymeEpidemic
EpidemiologyEpilimnionEpisode
EquilibriumEquityEquivalent method
ErosionEstuariesEstuary
EthanolEthylene dibromideETS
Eutrophic lakesEutrophicationEvaporation
Evaporation pondsEvapotranspirationEverglades
Ex situExceedanceExclusion
ExemptionExhaust fumeExotic species
Experimental use permitExportsExposure
Exposure assessmentExposure concentrationExposure indicator
Exposure levelExposure pathwayExposure route
ExtinctExtinctionExtraction procedure
Extraction well


F
Fabric filterFactory farmingFactory ships
FacultativeFacultative bacteriaFallout
Family planningFamineFarmland
FaunaFeasibility studyFecal coliform bacteria
Federal implementation planFederal landFeedlot
FeedlotsFeedstockFen
Ferrous metalsFertilityFertilizer
FiberField capacityFill
FillingFilter stripFiltering
FiltrationFinished waterFire
First drawFiscal yearFish kill
FisheriesFisheryFission
Fix a sampleFlammableFlare
Flash pointFlocFlocculation
FloodplainFloraFlow rate
Flowing artesian wellFlue gasFlue gas desulfurization
FluidizedFluidized bed incineratorFlume
FluoridationFluoridesFluorocarbons
FlushFluxFly ash
FoggingFood chainFood processing waste
Food wasteFood webForest
Forest fireForestryForests
FormaldehydeFormulationFossil fuel
Fossil fuelsFractureFree product
FreeboardFresh waterFriable
Friable asbestosFuelFuel economy standard
Fuel efficiencyFuel switchingFugitive emissions
FumeFumigantFungi
FungicideFungistatFungus
Furrow irrigationFuture liability


G
Gaining streamGame fishGamma rays
GarbageGarbage canGas
Gas chromatographGas chromatographyGaseous waste
GasificationGasoholGasoline
Gasoline volatilityGastroenteritisGeneral permit
General reporting facilityGenerally recognized as safeGenerator
Genetic engineeringGenotoxicGeographic information system
Geological logGeophysical logGeothermal
GermicideGiardia lambliaGillnets
GISGlass containersGlobal warming
Global warming potentialGooseneckGrab sample
GramGrassed waterwayGrassroots
Gray waterGrazingGreen design
GreenhouseGreenhouse effectGreenhouse gas
Greenhouse gasesGreenpeaceGreenwash
GreenwayGrinder pumpGross alpha
Ground coverGround waterGroundfish
Ground-penetrating radarGroundwaterGroundwater basin
Ground-water dischargeGroundwater divideGrowth overfishing
Gully erosionGypsum


H
HabitatHalf-lifeHalogen
HalonHammer millHard water
HarvestHaulerHazard
Hazard assessmentHazard communication standardHazard evaluation
Hazard identificationHazard quotientHazardous air pollutants
Hazardous chemicalHazardous ranking systemHazardous substance
Hazardous wasteHazeHeadspace
Health advisory levelHealth assessmentHealth hazard
HearingsHeat island effectHeat pump
Heat waveHeathHeavy metal
Heavy metalsHeptachlorHerbaceous
HerbicideHerbivoreHeterotrophic microorganisms
Heterotrophic organismsHigh end exposureHigh intensity discharge
High seasHigh-density polyethyleneHighest dose tested
High-levelHigh-level radioactive wasteHistology
Holding pondHolding timeHollow stem auger drilling
Homeowner water systemHomogeneous areaHost
Hot spotHousehold hazardous wasteHousehold hazards
Household wasteHuman equivalent doseHuman exposure evaluation
Human health riskHumusHydraulic conductivity
Hydraulic gradientHydrocarbonHydrocarbons
HydrochlorinationHydroelectricHydrofluorocarbons
Hydrogen peroxideHydrogen sulfideHydrogeology
Hydrologic cycleHydrological SystemHydrology
HydrolysisHydronicHydrophilic
HydrophobicHydropneumaticHydropower
HypersensitivityHypolimnionHypoxia
HypoxicHypoxic waters


I
IAQIgnitableIllegal
IllicitImhoff coneImminent hazard
Imminent threatImpermeableImpermeable layer
ImportsImpoundmentIn situ
In vitroIn vivoIncentive
Incident command systemIncinerationIncinerator
IncineratorsIncompatible wasteIndicator
IndigenousIndigenous peoplesIndirect source
Indoor airIndoor air pollutionIndoor air quality
Indoor climateInduced rechargeIndustrial emissions
Industrial process wasteIndustrial source reductionIndustrial waste
Industrialized countriesInert ingredientInfectious agent
Infectious wasteInfiltrationInfiltration gallery
Infiltration rateInflowInfluent
IngestionInhalable particlesInhalation
Initial compliance periodInjection wellInjection zone
In-line filtrationInnovative technologiesInoculum
InorganicInorganic chemicalsInsecticide
InsecticidesIn-situ flushingIn-situ oxidation
In-situ strippingIn-situ vitrificationInspection
Inspection and maintenanceInstitutional wasteInstream use
Integrated managementIntegrated pest managementIntegrated waste management
Interceptor sewersInterfaceInterflow
InterimInternal doseInternational Union for the Conservation of Nature and Natural Resources
Interstate watersInventoryInversion
IonIonizing radiationIRIS
Irradiated foodIrradiationIrreversible effect
IrrigationIrrigation efficiencyIrrigation return flow
IrritantIslandsIsoconcentration
IsoplethIsotopeIsotropy


J
Jar testJoint and several liabilityJustice


K
KarstKinetic energyKinetic rate coefficient
Kyoto Protocol


L
L)LagoonLakes
Land applicationLand farmingLand use
LandfillLandfill siteLandfills
LandingsLandscapeLandscape characterization
Langelier indexLarge water systemLatency
Lateral sewersLaundering weirLaw
LD 50LeachateLeachate collection system
LeachingLeadLead poisoning
Lead service lineLeast-cost planningLegionella
LesionLethalLethal concentration
Lethal doseLeukemiaLevel of concern
Life cycle analysisLife cycle assessmentLife cycle inventory
Life cycle of a productLifetime exposureLift
Lifting stationLight pollutionLight-emitting diode
Limit of detectionLimiting factorLimnology
LindaneLinerLipid solubility
LiquefactionLiquidLiquid waste
ListLithologyLitter
Littoral zoneLocal education agencyLogging
LonglinesLosing streamLow density polyethylene
Low emissivityLow nox burnersLower detection limit
Lower explosive limitLowest acceptable daily doseLow-impact camping
Low-level radioactive wasteLumberLung diseases
Lymphoma


M
MacroinvertebratesMacroscopic organismsMajor modification
Major stationary sourcesMajority leaderMalathion
MalignantMammalManaged growth
Management planManagerial controlsMandatory recycling
ManifestManifest systemMan-made
Manufacturers formulationManufacturing use productMargin of exposure
Margin of safetyMarine mammalMarine pollution
Marine sanitation deviceMarine watersMarsh
Mass spectrometerMass transitMaterial category
Material safety data sheetMaterial typeMaterials recovery facility
MaximallyMaximum contaminant levelMaximum residue level
Maximum tolerated doseMeasure of exposureMeasurement endpoint
Mechanical aerationMechanical separationMechanical turbulence
MediaMedical wasteMedium-size water system
MeniscusMercuryMesotrophic
MetabolismMetabolitesMetalimnion
MetastaticMeteorologyMethane
MethanolMethod detection limitMethoxychlor
Methyl bromideMicrobial growthMicrobial pesticide
MicroclimateMicrocosmMicroenvironments
Micrograms per literMicronMicroorganisms
Million-gallons per dayMineralizationMinimization
MiningMining wasteMinor source
MinorsMistMitigation
Mixed liquorMixed metalsMixed municipal waste
Mixed paperMixed plasticMobile source
ModelingModified sourceMoisture content
Molecular weightMoleculeMonitor
MonitoringMonitoring wellMonitoring wells
Monoclonal antibodiesMonomicticMontreal protocol
MoratoriumMorbidityMortality
Most probable numberMotileMuck
Muck soilsMudballsMulch
Multiple chemical sensitivityMultiple useMunicipal discharge
Municipal sewageMunicipal sludgeMunicipal solid waste
Municipal wasteMutagenMutagenicity


N
NationalNational ambient airNational emissions
National estuary programNational municipal planNational oil and
National pollutantNational priorities listNational response center
National response teamNational secondaryNatural environment
Natural gasNatural resourcesNature Conservancy
Nature conservationNavigable watersNecrosis
NegotiationsNematocideNematodes
NeoplasmNephelometricNetting
NeurotoxicityNeutralizationNew source
New source reviewNicheNitrate
Nitric oxideNitrificationNitrilotriacetic acid
NitriteNitrogenNitrogen cycle
Nitrogen dioxideNitrogen fixationNitrogen oxide
Nitrogen oxidesNitrogenousNitrogenous wastes
NitrophenolsNo further remedialNo observable
No tillNoble metalNoise
Noise pollutionNon-aqueous phase liquidNon-attainment area
Non-community water systemNon-compliance coalNon-contact cooling water
Non-conventional pollutantNon-degradationNondischarging
Non-ferrous metalsNon-methane hydrocarbonNon-methane organic
Non-methane organic gasesNonpoint sourceNon-point source
Non-point sourcesNon-potableNonrenewable energy
Nonrenewable resourceNon-road emissionsNo-observed-effect-level
Notice of deficiencyNotice of intent toNotice of intent to cancel
Notice of intent to denyNuclear energyNuclear power
Nuclear power plantNuclear reactorNuclear tests
Nuclear wasteNuclear winterNuclide
NutrientNutrient pollutionNutrients


O
OasisObligate aerobesObligate anaerobes
Ocean dumpingOceanographyOdor threshold
Oecd guidelinesOffice paperOffsets
Offstream useOilOil spill
Oil spillsOld growth forestsOld-growth forest
OligotrophicOncologyOne-hit model
On-scene coordinatorOpacityOpen burning
Open-loop recyclingOperable unitOperating conditions
Operation and maintenanceOperator certificationOral toxicity
OrganicOrganic chemicalsOrganic chemicals/compounds
Organic compoundOrganic matterOrganism
OrganophosphatesOriginal ahera inspectionOSHA
OsmosisOther glassOther paper
Other plasticsOther solid wasteOther wood
OutfallOverburdenOverdraft
Overfire airOverfishingOvergrazing
Overland flowOverturnOxidant
OxidationOxidation pondOxygen
Oxygenated fuelsOzonationOzonator
OzoneOzone depletionOzone hole
Ozone layer


P
PackagingPacked bed scrubberPacked tower
Packed tower aerationPackerPalatable water
PandemicPaperPaper mills
Paper productsPaperboardParameter
ParaquatParathionParshall flume
Particle countParticulateParticulate matter
Particulate pollutionParticulatesPartition coefficient
Parts per billionPassive smokingPassive solar
PathogenPathogensPathology
PathwayPeak levelsPeat
Pelagic speciesPenetrationPerched aquifer
Perched waterPercolating waterPercolation
Performance dataPerformance standardsPeriphyton
PermeabilityPermeablePermeable layer
PermitPersistencePersonal protective equipment
PestPest control operatorPesticide
Pesticide regulation noticePesticidesPETE
PetroleumPhPharmacokinetics
Phenolphthalein alkalinityPhenolsPhosphate
PhosphatesPhosphogypsum pilesPhosphorus
Photochemical oxidantsPhotochemical smogPhotosynthesis
PhytoplanktonPhytoremediationPhytotoxic
PhytotreatmentPicoPicocurie
Picocuries per literPicocuries per liter pciPiezometer
Piezometric surfacePilot testsPlankton
PlasmidPlasticsPlug flow
PluggingPlumePlutonium
PM10PM-10Pneumoconiosis
Point sourcePoint source pollutionPoison
PoisonousPollenPollutant
Pollutant pathwaysPollutant standard indexPolluted runoff
PolluterPollutionPollution prevention
PoloniumPolychlorinated biphenylsPolyelectrolytes
PolymerPolyvinyl chloridePopulation
Population at riskPopulation growthPore space
PorosityPost consumer wastePost-closure
Post-consumer materialPost-consumer materialsPost-consumer recycling
Potable waterPotential dosePotentially responsible party
PotentiationPotentiometric surfacePower plants
Power stationPpbPpm
Precautionary principlePrechlorinationPrecipitate
PrecipitationPrecipitatorPrecursor
PredationPreliminary assessmentPrescribed burn
PrescriptivePressure sewersPretreatment
Prevalence studyPrevalent level samplesPrevalent levels
PrimacyPrimary effectPrimary standards
Primary waste treatmentPrionsPrior appropriation
Probability of detectionProcaryotesProcess variable
ProducersProduct levelProduct water
Project xlPropellantProportionate mortality ratio
Proposed planProteinsProtocol
ProtoplastProtozoaPublic comment period
Public healthPublic hearingPublic land
Public noticePublic transportationPublic water system
PulpPumping stationPumping test
PurgingPutrefactionPutrescible
Pyrolysis


Q
Qualitative use assessmentQuality assuranceQuality control
QuarryQuench tankQuicklime


R
RadiationRadicalRadio frequency radiation
RadioactiveRadioactive decayRadioactive substances
Radioactive wasteRadioactivityRadioisotopes
RadionuclideRadius of influenceRadon
Radon decay productsRadon progenyRain forest
RainforestRangelandRanney collector
Raw agricultural commodityRaw sewageRaw water
ReactivityReaerationReagent
Real-time monitoringReasonable further progressReasonable maximum exposure
Receiving watersReceptorRecess
RechargeRecharge areaRecharge rate
Reclaimed wastewaterReclamationRecombinant bacteria
Recombinant dnaReconstructed sourceReconstruction of dose
Record of decisionRecovery rateRecycle
Recycled paperRecycled waterRecycling
Recycling millRecycling rateRed bag waste
Red tideRedemption programReduce
ReductionRe-entryReference dose
ReforestationReformulated gasolineRefrigerants
RefuseRefuse reclamationRegeneration
RegionRegional response teamRegistrant
RegistrationRegistration standardsRegulated medical waste
Relative humidityReleaseRem
Remedial actionRemedial designRemedial investigation
Remedial project managerRemedial responseRemediation
Remote sensingRemoval actionRenewable energy
Renewable resourceRenewable resourcesReportable quantity
Representative sampleReserve capacityReservoir
Residence timeResidential useResidential waste
ResidualResidual riskResidual saturation
ResidueResistanceResolution
Resource conservationResource recoveryRespirable
RespirationRespiratoryResponse action
Responsiveness summaryRestorationRestricted use
Restriction enzymesRetardationRetrofit
Return flowReuseReverse osmosis
Reversible effectRibonucleic acidRider
RiffleRillRiparian
Riparian habitatRiparian rightsRisk
Risk assessmentRisk characterizationRisk communication
Risk estimateRisk factorRisk management
Risk-specific doseRiverRiver basin
RodenticideRough fishRoute of exposure
RubbishRubbish binRunoff
Run-offRural


S
SafeSafe waterSafe yield
SalinitySalinizationSalt marsh
Salt waterSalt water intrusionSalts
SalvageSanctionsSand filters
Sanitary landfillSanitary sewerSanitary sewers
Sanitary surveySanitary waterSanitation
SaprophytesSaturated thicknessSaturated zone
SaturationSaturation zoneSavanna
ScarcityScourScrap
ScreeningScrubberSeagrass
Secondary effectSecondary materialsSecondary standards
Secondary treatmentSecondhand smokeSecure chemical landfill
SedgesSedimentSediment yield
SedimentationSedimentation tanksSediments
SeepageSemi-confined aquiferSenescence
Septic systemSeptic tankSequestration
Service line sampleService pipeSettleable solids
Settling tankSewageSewage lagoon
Sewage sludgeSewerSewerage
Shading coefficientSharpsShock load
Short circuitingShort-circuitingShredder
Sick building syndromeSierra ClubSignal
Signal wordsSignificant deteriorationSignificant non-compliance
SilosSiltSiltation
SilvicultureSinkSinking
SIPSiteSite inspection
SitingSkimmingSlag
SlakeSlow sand filtrationSludge
Sludge digesterSlurrySmall quantity generator
SmelterSmogSmoke
Soft waterSoilSoil conditioner
Soil erosionSoil gasSoil moisture
Soil profileSolar cellSolar energy
SolderSole source aquiferSole-source aquifer
Solid wasteSolid waste disposalSolid waste management
SolubilitySolutionSoot
SorptionSortSource area
Source reductionSource separationSource water assessment
Source water protectionSpargeSpeaker
Special reviewSpecial wasteSpecies
Species extinctionSpecific conductanceSpecific yield
SphagnumSpoilSpore
SprawlSprayingSpring
StabilizationStabilization pondsStable air
StackStack effectStack gas
Stage ii controlsStagnationStakeholder
Standard sampleStandardsStart of a response action
State implementation plansState landStatic water level
Stationary sourceSterilizationSterilizer
StewardshipStockpileStorage
Storm drainStorm sewerStormwater
StratificationStratigraphyStratosphere
StratumStreambedStressors
Strip croppingStrip miningStrip-mining
StructureSubchronicSublimation
Submerged aquatic vegetationSubsidenceSubsidies
SubstrateSubwatershedSuccession
SuctionSulfateSulfur
Sulfur dioxideSulphateSulphur
Sulphur dioxideSulphur oxideSump
Supercritical waterSuperfundSupernatant
Supplier of waterSurface impoundmentSurface runoff
Surface waterSurfacing materialSurfactant
Surveillance systemSuspect materialSuspended solids
SuspensionSuspension cultureSustainability
Sustainable agricultureSustainable communitiesSustainable development
Sustainable yieldSwampSymbiosis
SynergismSynthetic organic chemicals


T
TableTailingsTailpipe standards
TamperingTap waterTax shift
Technical assistance grantTechnology-based limitationsTechnology-based standards
TelecommutingTeratogenTeratogenesis
TerraceTerracingTertiary treatment
ThawThermal pollutionThermal spring
Thermal stratificationThermal system insulationThermal treatment
ThermoclineThreatened speciesThreshold
Threshold levelThreshold limit valueThreshold odor
Threshold planning quantityThrowawayTidal marsh
TillageTimberTimberline
Time-weighted averageTipping feeTires
TLVToleranceTolerances
TonnageTopographyTopsoil
Total dissolved phosphorousTotal dissolved solidsTotal petroleum hydrocarbons
Total suspended solidsToxapheneToxic
Toxic chemicalToxic cloudToxic concentration
Toxic doseToxic emissionsToxic metals
Toxic pollutantsToxic release inventoryToxic sites
Toxic substanceToxic substancesToxic waste
ToxicantToxicantsToxicity
Toxicity assessmentToxicity testingToxicological profile
ToxificationTraffic calmingTransfer station
Transient water systemTransitTransmission lines
TransmissivityTranspirationTransportation
Transportation planningTransporterTrapping
TrashTrash-to-energy planTrawls
Treatability studiesTreated wastewaterTreatment
Treatment plantTrial burnTributary
TrichloroethaneTrichloroethyleneTrickling filter
TrihalomethaneTrip reductionTrolling
TropicsTroposphereTrust fund
Tube settlerTundraTurbidimeter
TurbidityTurtle excluder device


U
Ultra clean coalUltraviolet raysUncertainty factor
Unconfined aquiferUnconfined aquifersUnderground aquifer
Underground injection controlUnderground injection wellsUnderground storage tank
Unleaded gasUnpollutedUnreasonable risk
UnsaturatedUnsaturated zoneUnsustainable
UpcyclingUpper detection limitUranium
UrbanUrban planningUrban runoff
Used oilUSGBCUtilities
Utility load


V
Vadose zoneVaporVapor density
Vapor dispersionVapor plumesVapor pressure
VarianceVectorVentilation
Ventilation rateVetoVinyl chloride
Virgin materialsVirusViscosity
VolatileVolatile acidsVolatile liquids
Volatile organic compoundVolatile solidsVolume reduction
Volumetric tank testVortexVulnerability analysis
Vulnerable zone


W
WasteWaste collectionWaste disposal
Waste exchangeWaste feedWaste generation
Waste load allocationWaste managementWaste minimization
Waste pilesWaste reductionWaste site
Waste streamWaste to energyWaste treatment lagoon
Waste treatment plantWaste treatment streamWaste water
Waste-heat recoveryWastelandWaste-to-energy facility
WastewaterWastewater infrastructureWastewater treatment
WaterWater budgetWater chemistry
Water cycleWater filtersWater pollution
Water purification plantWater purveyorWater quality
Water quality criteriaWater quality indicatorWater quality indicators
Water quality standardWater quality standardsWater quality testing
Water sampleWater solubilityWater storage pond
Water supplierWater supplyWater supply system
Water tableWater treatment plantsWater vapor
Water wellWaterborne contaminantsWaterborne disease outbreak
WatershedWatershed areaWeathering
Weed killerWeirWell
Well fieldWell injectionWell monitoring
Well pointWellheadWellhead protection area
WetlandWetlandsWettable powder
WildernessWilderness areaWildfire
WildlifeWildlife refugeWildlife refuges
Wind powerWithdrawalWood-burning-stove pollution
Working levelWorking level monthWorld Conservation Union
World Wildlife Fund


X
XenobioteXeriscaping


Y
Yard wasteYield


Z
Zero airZone of saturationZooplankton