Particulate Pollution
Pollution made up of small liquid or solid particles
suspended in the atmosphere or water supply.
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Particulate
- Fine dust or particles (i.e., smoke).
- Of or relating to minute discrete particles.
- A particulate substance.
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Pathogens
Microorganisms (i.e., bacteria, viruses or parasites)
that can cause disease in humans, animals and plants.
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Petroleum
Crude oil or any fraction thereof that is
liquid under normal conditions of temperature and pressure. The term
includes petroleum-based substances comprising a complex blend of hydrocarbons
derived from crude oil through the process of separation, conversion,
upgrading and finishing, such as motor fuel, jet oil, lubricants, petroleum
solvents and used oil.
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Photochemical Oxidants
Air pollutants formed by the action of sunlight
on oxides of nitrogen and hydrocarbons.
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Photochemical Smog
Air pollution caused by chemical reactions
of various pollutants emitted in the presence of sunlight.
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Pollution
Generally, the presence of a substance in
the environment that, because of its chemical composition or quantity,
prevents the functioning of natural processes and produces undesirable
environmental and health effects. Under the Clean Water Act, for example,
the term has been defined as the man-made or man-induced alteration
of the physical, biological, chemical and radiological integrity of
water and other media.
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Pollution Prevention
- Techniques that eliminate waste prior to treatment, such as changing
ingredients in a chemical reaction.
- Identifying areas, processes and activities that create excessive
waste products or pollutants in order to reduce or prevent them through
alteration or elimination of a process.
- The EPA has initiated a number of voluntary programs in which
industrial or commercial "partners" join with the EPA in promoting
activities that conserve energy, conserve and protect the water supply,
reduce emissions or find ways of utilizing them as energy resources,
and reduce the waste stream.
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Post-consumer Material
Any household or commercial product that
has served its original, intended use.
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Post-consumer Recycle Content
A product composition that contains some
percentage of material that has been reclaimed from the same or another
end use at the end of its former, useful life.
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Post-industrial Material
Industrial manufacturing scrap or waste;
also called pre-consumer material
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Post-industrial Recycle Content
A product composition that contains some
percentage of manufacturing waste material that has been reclaimed from
a process generating the same or a similar product. Also called pre-consumer
recycle content.
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ppb
Parts per billion.
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ppm
Parts per million.
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Pyrolysis
Decomposition of a chemical by extreme heat.
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