Transmittal of "Guidance of Section 303 of the Clean Air Act"

Explains the statutory requirements and resource needs that must be met in order to take action under Section 303 of the Clean Air Act in the event of a pollution emergency. Issued April 1, 1999.

• Transmittal of "Guidance of Section 303 of the Clean Air Act" (pdf) (27.08 MB, April 1, 1999)