The Air Toxics "Hot Spots" Information and Assessment Act (the Act) requires each district to recover state and district program costs, H&SC §44380 et. seq.  At the South Coast AQMD, this is accomplished through Rule 307.1.  The fees assessed through this regulation are used to:

  • inventory toxic air emissions;

  • prioritize facilities for presentation of risk assessments;

  • review risk assessments;

  • notify the public of potential health risk from exposure to the emissions;

  • provide guidance to the facilities in regarding the potential health risks from exposure to the emissions;

  • develop risk assessment guidelines and chemical potency values; and,

  • maintain a computerized, statewide inventory of toxic emissions for toxic reduction rule making.

For more information about the following:


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South Coast Air Quality Management District

21865 Copley Dr, Diamond Bar, CA 91765



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