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Offset – A method used in the 1990 Clean Air Act to give companies
which own or operate large (major) source in a nonattainment
area flexibility in meeting overall pollution reduction requirements
when changing production processes. If the owner or operator
of the source wishes to increase release of a criteria air
pollutant, an offset (reduction of a somewhat greater amount
of the same pollutant) must be obtained either at the same
plant or by purchasing offsets from another company.
Onroad Mobile Source Air Emissions - Onroad mobile sources are also called “highway mobile sources.” These sources are the motor vehicles (e.g., automobiles, buses, trucks) traveling on local and highway roads. A motor vehicle is any self-propelled vehicle used to carry people or property on a street or highway (40 CFR 51.50).
Opacity – The amount of light obscured by particulate pollution
in the air; clear window glass has zero opacity, a brick wall
is 100 percent opaque. Opacity is an indicator of changes in
performance of particulate control systems.
Open Burning – means any fire from which the products
of combustion are emitted directly into the open air, and are
not by design directed through a stack or chimney.
Organic Chemicals/Compounds – Naturally occurring (animal
or plant-produced or synthetic) substances containing mainly
carbon, hydrogen, nitrogen, and oxygen.
OTC – means Ozone Transport Commission. The OTC is a
multi-state organization created under the Clean Air Act (CAA),
responsible for advising the USEPA on transport issues and for developing
and implementing regional solutions to the ground-level ozone
problem in the Northeast and Mid-Atlantic regions.
OTR – means Ozone Transport Region. The ozone transport
region established pursuant to 42 U.S.C. 7511c(a), comprised
of the States of Connecticut, Delaware, Maine, Maryland, Massachusetts,
New Hampshire, New Jersey, New York, Rhode Island, Pennsylvania,
Vermont, the Consolidated Metropolitan Statistical Area that
includes northern portions of Virginia and the District of
Columbia.
Oxidant – A collective term for some of the primary constituents
of photochemical smog.
Oxygenated Fuel (oxyfuel) – A special type of gasoline, which
burns more completely than regular gasoline in cold start conditions;
more complete burning results in reduced production of carbon
monoxide, a criteria air pollutant. In some parts of the country,
where carbon monoxide release from cars starting up in cold
weather makes a major contribution to pollution, gasoline refiners
must market oxygenated fuels, which contain higher oxygen content
than regular gasoline.
Ozone – a gas which is a variety of oxygen. The
oxygen gas found in the air consists of two oxygen atoms stuck
together; this is molecular oxygen. Ozone consists of
three oxygen atoms stuck together into an ozone molecule. Ozone
occurs in nature; it produces the sharp smell you notice near
a lightening strike. High concentrations of ozone gas
are found in a layer of the atmosphere – the stratosphere – high
above the Earth. Stratospheric ozone shields the Earth
against harmful rays from the sun, particularly ultraviolet
B. Smog’s main component is ozone; this ground-level
ozone is a product of reactions among chemicals produced by
burning coal, gasoline and other fuels, and chemicals found
in products including solvents, paints, hairsprays, etc.
Ozone Season (Entire) – means May 1 through September
30, inclusive.
Ozone Season for Emission Statements Reporting – means May 1 through September 30, inclusive, in New Jersey (NJAC 7:27-21).
Ozone Season for Monitoring - means March 1 through September 30, inclusive, in New Jersey (40 CFR 58).
Ozone Season, Peak – means June 1 through August 31, inclusive, in New Jersey (NJAC 7:27-21).
Ozone Transport Commission (OTC) – means the organization
established pursuant to § 184(a) of the Clean Air Act
Amendments of 1990. The members of this commission include
an air pollution control official from each of the following
jurisdictions: Connecticut, Delaware, the District of Columbia,
Maine, Maryland, Massachusetts, New Hampshire, New Jersey,
New York, Pennsylvania, Rhode Island, Vermont, and Virginia.
Ozone Transport Regions – The ozone transport region established
pursuant to 42 U.S.C. 7511c(a), comprised of the States of
Connecticut, Delaware, Maine, Maryland, Massachusetts, New
Hampshire, New Jersey, New York, Rhode Island, Pennsylvania,
Vermont, the Consolidated Metropolitan Statistical Area that
includes northern portions of Virginia and the District of
Columbia. |