Significant Hazardous Air Contaminants

Acetaldehyde | Acrolein | Acrylonitrile | Arsenic | Benzene |1,3 Butadiene |Carbon Tetrachloride | Chloroform | Ethylene Dichloride | Formaldehyde | Tetrachloroethylene

Acetaldehyde

Primary sources:    

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Acrolein

Primary source:   

 * Data for 2010-2013 invalidated by AQCD

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Acrylonitrile

Primary source:  

  * Data for 2010-2013 invalidated by AQCD

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Arsenic

Primary source: 

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Benzene

Primary source:   

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1, 3 Butadiene

Primary Source:    

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Carbon Tetrachloride

Primary source:  Note due to it's long history of use and extended half-life in the atmosphere, carbon tetrachloride is present world-wide at a concentration of 0.5 ug.m3 (2014)

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Chloroform

Primary source:  

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Ethylene Dichloride

Primary source:  

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Formaldehyde

Primary sourc e:  

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Tetrachloroethylene

Primary source: 

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