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The National Ambient Air Quality Standards (NAAQS) are standards established by the United States Environmental Protection Agency that apply for outdoor air throughout the country. Primary standards are designed to protect human health, including sensitive populations such as children, the elderly, and individuals suffering from respiratory disease. Secondary standards are designed to protect public welfare (e.g. building facades, visibility, crops, and domestic animals). EPA redirects here. ...
Look up air in Wiktionary, the free dictionary. ...
Building is either the act of creating an object assembled from more than one element, or the object itself; see also construction. ...
West facade of the Notre-Dame de Strasbourg Cathedral A facade (or façade) (Pronounced fa-sa-de) is generally the exterior of a building — especially the front, but also sometimes the sides and rear. ...
you fools are stupid to let people edit these sheet your all dumasss get a life fukers Agriculture (a term which encompasses farming) is the art, science or practice of producing food, feed, fiber and many other desired goods by the systematic raising of plants and animals. ...
This is a list of animals that have been domesticated by humans. ...
NAAQS requires the EPA to set standards on six criteria pollutants: Pollutants are substances which directly or indirectly damage us or the environment. ...
- Ozone (O3)
- Particulate Matter
- PM10, course particles: 2.5 micrometers (μm) to 10 μm in size (although current implementation includes all particles 10 μg or less in the standard)
- PM2.5, fine particles: 2.5 μm in size or less
- Carbon monoxide (CO)
- Sulfur dioxide (SO2)
- Nitrogen oxides (NOx)
- Lead (Pb)
Ozone (O3) is a key constituent of the troposphere. ...
Particulates, alternately referred to as Particulate Matter (PM) , aerosols or fine particles are tiny particles of solid or liquid suspended in the air. ...
A micrometre (American spelling: micrometer), symbol µm, is an SI unit of length. ...
Carbon monoxide, chemical formula CO, is a colorless, odorless, tasteless, flammable and highly toxic gas. ...
Sulfur dioxide (or Sulphur dioxide) has the chemical formula SO2. ...
The term nitrogen oxide is imprecise and can be used to refer to any of these oxides (oxygen compounds) of nitrogen, or to a mixture of them: Nitric oxide (NO), nitrogen(II) oxide Nitrogen dioxide (NO2) Dinitrogen monoxide (N2O) (Nitrous oxide) Dinitrogen trioxide (N2O3) Dinitrogen tetroxide (N2O4) Dinitrogen pentoxide (N2O5...
General Name, Symbol, Number lead, Pb, 82 Chemical series poor metals Group, Period, Block 14, 6, p Appearance bluish white Atomic mass 207. ...
Standards
| Pollutant | Type | Standard | Averaging Timea | Regulatory Citation | | SO2 | Primary | 0.14 ppm (365 μg/m3) | 24-hour | 40 CFR 50.4(b) | | SO2 | Primary | 0.030 ppm (80 μg/m3) | annual | 40 CFR 50.4(a) | | SO2 | Secondary | 0.5 ppm (1,300 μg/m3) | 3-hour | 40 CFR 50.5(a) | | PM10 | Primary and Secondary | 150 μg/m3 | 24-hour | 40 CFR 50.6(a) | | PM10 | Primary and Secondary | 50 μg/m3 | annual | 40 CFR 50.6(b) | | PM2.5 | Primary and Secondary | 65 μg/m3 | 24-hour | 40 CFR 50.7(a) | | PM2.5 | Primary and Secondary | 15 μg/m3 | annual | 40 CFR 50.7(a) | | CO | Primary | 35 ppm (40 mg/m3) | 1-hour | 40 CFR 50.8(a)(2) | | CO | Primary | 9 ppm (10 mg/m3) | 8-hour | 40 CFR 50.8(a)(1) | | O3 | Primary and Secondary | 0.12 ppm (235 μg/m3) | 1-hourb | 40 CFR 50.9(a) | | O3 | Primary and Secondary | 0.08 ppm (235 μg/m3) | 8-hour | 40 CFR 50.10(a) | | NOx | Primary and Secondary | 0.053 ppm (100 μg/m3) | annual | 40 CFR 50.11(a) and (b) | | Pb | Primary and Secondary | 1.5 μg/m3 | quarterly | 40 CFR 50.12 | Note a: Each standard has its own criteria for how many times it may be exceeded, in some cases using a three year average. Parts per million (ppm) is a measure of concentration that is used where low levels of concentration are significant. ...
The microgram (symbol µg, sometimes mcg) is an SI unit of mass. ...
The cubic meter (symbol m³) is the SI derived unit of volume. ...
The United States Code of Federal Regulations (CFR) is the codification of the general and permanent rules and regulations published in the Federal Register by the executive departments and agencies of the Federal Government. ...
The milligram (symbol mg) is an SI unit of mass. ...
Note b: As of June 15, 2005, the 1-hour ozone standard no longer applies to areas designated with respect to the 8-hour ozone standard (which includes most of the United States, except for portions of 10 states).
Source: USEPA
See also Atmospheric dispersion modeling is performed with computer programs that use mathematical equations and algorithms to simulate how pollutants in the ambient atmosphere disperse in the atmosphere. ...
This article needs cleanup. ...
This power plant in New Mexico releases sulfur dioxide and particulate matter into the air. ...
Wikipedia does not yet have an article with this exact name. ...
An air quality measurement station in Edinburgh, Scotland The Air Quality Index (AQI) is a standardized indicator of the air quality in a given location. ...
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