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Glossary of Terms
Acronyms are listed prior to definitions.
As provided by the United States Environmental Protection Agency and several other sources. This database will continue to grow with your contributions.

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

 


FACA— Federal Advisory Committee Act
FAN— Fixed Account Number
FATES— FIFRA and TSCA Enforcement System
FBC— Fluidized Bed Combustion
FCC— Fluid Catalytic Converter
FCCC— Framework Convention on Climate Change
FCCU— Fluid Catalytic Cracking Unit
FCO— Federal Coordinating Officer (in disaster areas); Forms Control Officer
FDF— Fundamentally Different Factors
FDL— Final Determination Letter
FDO— Fee Determination Official
FE— Fugitive Emissions
FEDS— Federal Energy Data System
FEFx— Forced Expiratory Flow
FEIS— Fugitive Emissions Information System
FEL— Frank Effect Level
FEPCA— Federal Environmental Pesticide Control Act; enacted as amendments to FIFRA.
FERC— Federal Energy Regulatory Commission
FES— Factor Evaluation System
FEV— Forced Expiratory Volume
FEV1— Forced Expiratory Volume—one second; Front End Volatility Index
FF— Federal Facilities
FFAR— Fuel and Fuel Additive Registration
FFDCA— Federal Food, Drug, and Cosmetic Act
FFF— Firm Financial Facility
FFFSG— Fossil-Fuel-Fired Steam Generator
FFIS— Federal Facilities Information System
FFP— Firm Fixed Price
FGD— Flue-Gas Desulfurization
FID— Flame Ionization Detector
FIFRA— Federal Insecticide, Fungicide, and Rodenticide Act
FIM— Friable Insulation Material
FINDS— Facility Index System
FIP— Final Implementation Plan
FIPS— Federal Information Procedures System
FIT— Field Investigation Team
FLETC— Federal Law Enforcement Training Center
FLM— Federal Land Manager
FLP— Flash Point
FLPMA— Federal Land Policy and Management Act
FMAP— Financial Management Assistance Project
F/M— Food to Microorganism Ratio
FML— Flexible Membrane Liner
FMP— Facility Management Plan
FMP— Financial Management Plan
FMS— Financial Management System
FMVCP— Federal Motor Vehicle Control Program
FOE— Friends Of the Earth
FOIA— Freedom Of Information Act
FOISD— Fiber Optic Isolated Spherical Dipole Antenna
FONSI— Finding Of No Significant Impact
FORAST— Forest Response to Anthropogenic Stress
FP— Fine Particulate
FPA— Federal Pesticide Act
FPAS— Foreign Purchase Acknowledgement Statements
FPD— Flame Photometric Detector
FPEIS— Fine Particulate Emissions Information System
FPM— Federal Personnel Manual
FPPA— Federal Pollution Prevention Act
FPR— Federal Procurement Regulation
FPRS— Federal Program Resources Statement; Formal Planning and Supporting System
FQPA— Food Quality Protection Act
FR— Federal Register. Final Rulemaking
FRA— Federal Register Act
FREDS— Flexible Regional Emissions Data System
FRES— Forest Range Environmental Study
FRM— Federal Reference Methods
FRN— Federal Register Notice. Final Rulemaking Notice
FRS— Formal Reporting System
FS— Feasibility Study
FSA— Food Security Act
FSS— Facility Status Sheet; Federal Supply Schedule
FTP— Federal Test Procedure (for motor vehicles)
FTS— File Transfer Service
FTTS— FIFRA/TSCA Tracking System
FUA— Fuel Use Act
FURS— Federal Underground Injection Control Reporting System
FVMP— Federal Visibility Monitoring Program
FWCA— Fish and Wildlife Coordination Act
FWPCA— Federal Water Pollution and Control Act (aka CWA). Federal Water Pollution and Control Administration

Fabric Filter— A cloth device that catches dust particles from industrial emissions.

Facilities Plans— Plans and studies related to the construction of treatment works necessary to comply with the Clean Water Act or RCRA. A facilities plan investigates needs and provides information on the cost-effectiveness of alternatives, a recommended plan, an environmental assessment of the recommendations, and descriptions of the treatment works, costs, and a completion schedule.

Facility Emergency Coordinator— Representative of a facility covered by environmental law (e.g, a chemical plant) who participates in the emergency reporting process with the Local Emergency Planning Committee (LEPC).

Facultative Bacteria— Bacteria that can live under aerobic or anaerobic conditions.

Feasibility Study— 1. Analysis of the practicability of a proposal; e.g., a description and analysis of potential cleanup alternatives for a site such as one on the National Priorities List. The feasibility study usually recommends selection of a cost-effective alternative. It usually starts as soon as the remedial investigation is underway; together, they are commonly referred to as the “RI/FS”. 2. A small-scale investigation of a problem to ascertain whether a proposed research approach is likely to provide useful data.

Fecal Coliform Bacteria— Bacteria found in the intestinal tracts of mammals. Their presence in water or sludge is an indicator of pollution and possible contamination by pathogens.

Federal Implementation Plan— Under current law, a federally implemented plan to achieve attainment of air quality standards, used when a state is unable to develop an adequate plan.

Federal Motor Vehicle Control Program— All federal actions aimed at controlling pollution from motor vehicles by such efforts as establishing and enforcing tailpipe and evaporative emission standards for new vehicles, testing methods development, and guidance to states operating inspection and maintenance programs. Federally designated area that is required to meet and maintain federal ambient air quality standards. May include nearby locations in the same state or nearby states that share common air pollution problems.

Feedlot— A confined area for the controlled feeding of animals. Tends to concentrate large amounts of animal waste that cannot be absorbed by the soil and, hence, may be carried to nearby streams or lakes by rainfall runoff.

Fen— A type of wetland that accumulates peat deposits. Fens are less acidic than bogs, deriving most of their water from groundwater rich in calcium and magnesium.

Ferrous Metals— Magnetic metals derived from iron or steel; products made from ferrous metals include appliances, furniture, containers, and packaging like steel drums and barrels. Recycled products include processing tin/steel cans, strapping, and metals from appliances into new products.

FIFRA Pesticide Ingredient— An ingredient of a pesticide that must be registered with EPA under the Federal Insecticide, Fungicide, and Rodenticide Act. Products making pesticide claims must register under FIFRA and may be subject to labeling and use requirements.

Fill— Man-made deposits of natural soils or rock products and waste materials.

Filling— Depositing dirt, mud or other materials into aquatic areas to create more dry land, usually for agricultural or commercial development purposes, often with ruinous ecological consequences.

Filter Strip— Strip or area of vegetation used for removing sediment, organic matter, and other pollutants from runoff and wastewater.

Filtration— A treatment process, under the control of qualified operators, for removing solid (particulate) matter from water by means of porous media such as sand or a man-made filter; often used to remove particles that contain pathogens.

Financial Assurance for Closure— Documentation or proof that an owner or operator of a facility such as a landfill or other waste repository is capable of paying the projected costs of closing the facility and monitoring it afterwards as provided in RCRA regulations.

Finding of No Significant Impact— A document prepared by a federal agency showing why a proposed action would not have a significant impact on the environment and thus would not require preparation of an Environmental Impact Statement. An FNSI is based on the results of an environmental assessment.

Finished Water— Water is “finished” when it has passed through all the processes in a water treatment plant and is ready to be delivered to consumers.

First Draw— The water that comes out when a tap is first opened, likely to have the highest level of lead contamination from plumbing materials.

Fix a Sample— A sample is “fixed” in the field by adding chemicals that prevent water quality indicators of interest in the sample from changing before laboratory measurements are made.

Fixed-Location Monitoring— Sampling of an environmental or ambient medium for pollutant concentration at one location continuously or repeatedly.

Flammable— Any material that ignites easily and will burn rapidly.

Flare— A control device that burns hazardous materials to prevent their release into the environment; may operate continuously or intermittently, usually on top of a stack.

Flash Point— The lowest temperature at which evaporation of a substance produces sufficient vapor to form an ignitable mixture with air.

Floc— A clump of solids formed in sewage by biological or chemical action.

Flocculation— Process by which clumps of solids in water or sewage aggregate through biological or chemical action so they can be separated from water or sewage.

Floodplain— The flat or nearly flat land along a river or stream or in a tidal area that is covered by water during a flood.

Floor Sweep— Capture of heavier-than-air gases that collect at floor level.

Flow Rate— The rate, expressed in gallons -or liters-per-hour, at which a fluid escapes from a hole or fissure in a tank. Such measurements are also made of liquid waste, effluent, and surface water movement.

Flowable— Pesticide and other formulations in which the active ingredients are finely ground insoluble solids suspended in a liquid. They are mixed with water for application.

Flowmeter— A gauge indicating the velocity of wastewater moving through a treatment plant or of any liquid moving through various industrial processes.

Flue Gas— The air coming out of a chimney after combustion in the burner it is venting. It can include nitrogen oxides, carbon oxides, water vapor, sulfur oxides, particles and many chemical pollutants.

Flue Gas Desulfurization— A technology that employs a sorbent, usually lime or limestone, to remove sulfur dioxide from the gases produced by burning fossil fuels. Flue gas desulfurization is current state-of-the art technology for major SO2 emitters, like power plants.

Fluidized— A mass of solid particles that is made to flow like a liquid by injection of water or gas is said to have been fluidized. In water treatment, a bed of filter media is fluidized by backwashing water through the filter.

Fluidized Bed Incinerator— An incinerator that uses a bed of hot sand or other granular material to transfer heat directly to waste. Used mainly for destroying municipal sludge.

Flume— A natural or man-made channel that diverts water.

Fluoridation— The addition of a chemical to increase the concentration of fluoride ions in drinking water to reduce the incidence of tooth decay.

Fluorides— Gaseous, solid, or dissolved compounds containing fluorine that result from industrial processes. Excessive amounts in food can lead to fluorosis.

Fluorocarbons (FCs)— Any of a number of organic compounds analogous to hydrocarbons in which one or more hydrogen atoms are replaced by fluorine. Once used in the United States as a propellant for domestic aerosols, they are now found mainly in coolants and some industrial processes. FCs containing chlorine are called chlorofluorocarbons (CFCs). They are believed to be modifying the ozone layer in the stratosphere, thereby allowing more harmful solar radiation to reach the Earth’s surface.

Flush— 1. To open a cold-water tap to clear out all the water which may have been sitting for a long time in the pipes. In new homes, to flush a system means to send large volumes of water gushing through the unused pipes to remove loose particles of solder and flux. 2. To force large amounts of water through a system to clean out piping or tubing, and storage or process tanks.

Flux— 1. A flowing or flow. 2. A substance used to help metals fuse together.

Fly Ash— Non-combustible residual particles expelled by flue gas.

Fogging— Applying a pesticide by rapidly heating the liquid chemical so that it forms very fine droplets that resemble smoke or fog. Used to destroy mosquitoes, black flies, and similar pests.

Food Chain— A sequence of organisms, each of which uses the next, lower member of the sequence as a food source.

Food Processing Waste— Food residues produced during agricultural and industrial operations.

Food Waste— Uneaten food and food preparation wastes from residences and commercial establishments such as grocery stores, restaurants, and produce stands, institutional cafeterias and kitchens, and industrial sources like employee lunchrooms.

Food Web— The feeding relationships by which energy and nutrients are transferred from one species to another.

Formaldehyde— A colorless, pungent, and irritating gas, CH20, used chiefly as a disinfectant and preservative and in synthesizing other compounds like resins.

Formulation— The substances comprising all active and inert ingredients in a pesticide.

Fossil Fuel— Fuel derived from ancient organic remains; e.g. peat, coal, crude oil, and natural gas.

Fracture— A break in a rock formation due to structural stresses; e.g. faults, shears, joints, and planes of fracture cleavage.

Free Product— A petroleum hydrocarbon in the liquid free or non aqueous phase.

Freeboard— 1. Vertical distance from the normal water surface to the top of a confining wall. 2. Vertical distance from the sand surface to the underside of a trough in a sand filter.

Fresh Water— Water that generally contains less than 1,000 milligrams-per-liter of dissolved solids.

Friable— Capable of being crumbled, pulverized, or reduced to powder by hand pressure.

Friable Asbestos— Any material containing more than one-percent asbestos, and that can be crumbled or reduced to powder by hand pressure. (May include previously non-friable material which becomes broken or damaged by mechanical force.)

Fuel Economy Standard— The Corporate Average Fuel Economy Standard (CAFE) effective in 1978. It enhanced the national fuel conservation effort imposing a miles-per-gallon floor for motor vehicles.

Fuel Efficiency— The proportion of energy released by fuel combustion that is converted into useful energy.

Fuel Switching— 1. A precombustion process whereby a low-sulfur coal is used in place of a higher sulfur coal in a power plant to reduce sulfur dioxide emissions. 2. Illegally using leaded gasoline in a motor vehicle designed to use only unleaded.

Fugitive Emissions— Emissions not caught by a capture system.

Fume— Tiny particles trapped in vapor in a gas stream.

Fumigant— A pesticide vaporized to kill pests. Used in buildings and greenhouses.

Functional Equivalent— Term used to describe EPA’s decision-making process and its relationship to the environmental review conducted under the National Environmental Policy Act (NEPA). A review is considered functionally equivalent when it addresses the substantive components of a NEPA review.

Fungicide— Pesticides which are used to control, deter, or destroy fungi.

Fungistat— A chemical that keeps fungi from growing.

Fungus (Fungi)— Molds, mildews, yeasts, mushrooms, and puffballs, a group of organisms lacking in chlorophyll (i.e. are not photosynthetic) and which are usually non-mobile, filamentous, and multicellular. Some grow in soil, others attach themselves to decaying trees and other plants whence they obtain nutrients. Some are pathogens, others stabilize sewage and digest composted waste.

Furrow Irrigation— Irrigation method in which water travels through the field by means of small channels between each groups of rows.

Future Liability— Refers to potentially responsible parties’ obligations to pay for additional response activities beyond those specified in the Record of Decision or Consent Decree.