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of potential significant environmental effects of the proposed
action, and reasonable alternatives including the no action
alternative.
Environmental Planning Function
(EPF)
The Air Force organization at the base, major command or
field operating agency that manages the EIAP including
evaluation and completion of Air Force environmental forms,
identifies environmental quality standards that relate to the
action being evaluated, and prepares environmental
documents and related logistical information.
Environmental Protection Committee
(EPC)
The Air Force organization at the base, major command, air
staff or field operating agency that implements the
requirement to monitor, attain and maintain compliance with
environmental regulations; ensures the training of
appropriate personnel in the EIAP; reviews environmental
policy; facilitates coordination; and serves as a steering
group to monitor the overall conduct of the environmental
protection program. The EPC also evaluates environmental
concerns raised by proposed Air Force actions and ensures
that they are addressed in any decision-making process
including NEPA and EIAP.
EPA U.S. Environmental Protection Agency.
FBO A private operator that may conduct refueling, aircraft or
ground support equipment services for others at the airport.
Federal Action Actions with effects that may be major and potentially
subject to Federal control and responsibility. Federal actions
tend to fall into four categories: adoption of official policy,
adoption of formal plans, adoption of programs and approval
of projects, whether approved by permit or other regulatory
decision. See 40 CFR 1508.16 for additional information.
Finding of No Significant Impact
(FONSI)
A FONSI is a document which briefly presents evidence of why
Federal agency has determined that a proposed action, not
otherwise categorically excluded, will not have a significant impact
on the environment. The FONSI justifies why the preparation of
an EIS is unnecessary. The FONSI must include the EA or be
attached to the EA, or a summary of it, and reference any other
associated environmental documents. The FONSI should state all
mitigation that will be undertaken, if any.
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Frequency Distribution A curve of the percentage frequency of occurrence of each
value that a variable may take on.
Fugitive Dust Dust discharged to the atmosphere in an unconfined flow
stream such as that from unpaved road, storage piles and
heavy construction operations.
Gaussian Model A pollutant dispersion model based on the Gaussian
dispersion equation, which assumes a constant fractional
decrease in concentration per unit distance in the crosswind
and vertical direction from a stationary or moving center of
dispersion.
Hydrocarbons (HC) Total hydrocarbons excluding methane and ethane. These
gases represent unburned and wasted fuel. They come from
incomplete combustion of gasoline and from evaporation of
petroleum fuels.
IAS Indicated air speed.
Indirect Control Control of air quality by altering activities that influence the
rate and distribution of emissions (e.g., traffic patterns, land
use). Indirect control contrasts with direct control at the
source of emissions (e.g. devices on automobiles or smoke
stack).
Indirect Effect Effects that are caused by the implementation and/or
operation of an action, that occur later in time or are further
removed by distance from the action, but which are still
reasonable foreseeable. Often referred to as secondary
effects.
Indirect Emissions Indirect emissions are those caused by the implementation
and/or operation of an action, are reasonably foreseeable, but
which occur later in time and/or are farther removed in
distance from the action itself. Under General Conformity,
indirect emissions are further limited to those indirect
emissions that the responsible Federal agency can
“practicably control and will maintain control over due to a
continuing program responsibility of the Federal agency.”
Indirect Source Any structure or installation which attracts an activity which
creates emission of pollutants. For example, a shopping
center, an airport or a stadium.
Inventory See “Emission Inventory”.
Inversion A thermal gradient created by warm air situated above cooler
air. An inversion suppresses turbulent mixing and thus limits
the upward dispersion of polluted air.
Lead (Pb) A heavy metal that, when ingested or inhaled, affects the
blood forming organs, kidneys and the nervous system. The
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chief source of this pollutant at airports is the combustion of
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Air Quality Handbook航空质量手册(6)
