Where can I find National Emission Standards for Hazardous Air Pollutants (NESHAPs)?  Where is the list of hazardous air pollutants?

The National Emission Standards for Hazardous Air Pollutants (NESHAPs) are available at:
http://www.epa.gov/ttn/atw/mactfnlalph.html

About NESHAPs:

"The Clean Air Act requires EPA to regulate emissions of toxic air pollutants from a published list of industrial sources referred to as 'source categories.' As required under the Act, EPA has developed a list of source categories that must meet control technology requirements for these toxic air pollutants. The EPA is required to develop regulations (also known as rules or standards) for all industries that emit one or more of the pollutants in significant quantities. EPA developed implementation tools (eg. checklists, brochures) to help comply with the standards."

Read more at:

Air Toxics: Rules and Implementation
http://www.epa.gov/ttn/atw/eparules.html

For the list of hazardous air pollutants, the list of modifications, and guidance on pollutant aggregation, please see:

The Clean Air Act Amendments of 1990 List of Hazardous Air Pollutants
http://www.epa.gov/ttn/atw/orig189.html

Modifications To The 112(b)1 Hazardous Air Pollutants
http://www.epa.gov/ttn/atw/pollutants/atwsmod.html

Guidance on the Major Source Determination for Certain Hazardous Air Pollutants http://www.epa.gov/ttn/atw/agghapsmemo3.html

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