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ACO – means Administrative Consent Order. A legal agreement
signed by the USEPA and an individual, business, or other entity
through which the violator agrees to pay for correction of
violations, take the required corrective or cleanup actions,
or refrain from an activity. It describes the actions to be
taken, may be subject to a comment period, applies to civil
actions, and can be enforced in court.
ACT – means Alternative Control Technique.
Actual Emissions – means the rate at which an air contaminant
is actually emitted, either directly or indirectly, to the
outdoor atmosphere, in units of mass per calendar year, seasonal
period, or other time period as specified.
Air Contaminant – means any substance, other than water
or distillates of air, present in the atmosphere as solid particles,
liquid particles, vapors or gases.
Air Pollutant – Any substance in air that could, in high enough
concentration, harm man, other animals, vegetation, or material.
Pollutants may include almost any natural or artificial composition
of airborne matter capable of being airborne. They may be in
the form of solid particles, liquid droplets, gases, or in
combination thereof. Generally, they fall into two main groups:
(1) those emitted directly from identifiable sources and (2)
those produced in the air by interaction between two or more
primary pollutants, or by reaction with normal atmospheric
constituents, with or without photoactivation. Exclusive of
pollen, fog, and dust, which are of natural origin, about 100
contaminants have been identified. Air pollutants are often
grouped in categories for ease in classification; some of the
categories are: solids, sulfur compounds, volatile organic
chemicals, particulate matter, nitrogen compounds, oxygen compounds,
halogen compounds, radioactive compound, and odors.
Air Pollution – The presence of contaminants or pollutant
substances in the air that interfere with human health or welfare,
or produce other harmful environmental effects.
ALAPCO – means Association of Local Air Pollution Control
Officials. A national association of air pollution control
agencies throughout the United States.
Allowance – means a tradable unit, which represents
the limited authorization to emit one ton of NOx during a control
Ambient Air Quality Standard – means a limit on the
concentration of an air contaminant in the general outdoor
atmosphere as set forth in N.J.A.C. 7:27-13 or 40 CFR 50.
Ammonia (NH3) – means a colorless, pungent gas at standard
conditions, having a molecular composition of one nitrogen
atom and three hydrogen atoms.
Area Sources – Area sources include emissions from numerous
facilities or activities that individually release small amounts
of a given pollutant, but collectively they can release significant
amounts of a pollutant. This includes small stationary
sources that fall below required emission reporting thresholds
by the Emission Statement Program. Area sources are small
and numerous and have emissions which are not readily associated
with a single point or a small set of points. Some of
the stationary sources in this sector are sometimes referred
to as minor point sources.
Attainment Area – A geographic area in which levels of a
criteria air pollutant meet the health-based primary standard
(national ambient air quality standard, or NAAQS) for the pollutant. An
area may have an acceptable level for one criteria air pollutant,
but may have unacceptable levels for others. Thus, an
area could be both attainment and nonattainment at the same
time. Attainment areas are defined using federal pollutant
limits set by the USEPA.