Hazardous Air Pollutants Amendments Act of 1984

[AI summary unavailable — showing source text] Hazardous Air Pollutants Amendments Act of 1984 - Title I: - Amends the Clean Air Act ("the Act") to provide for the control of hazardous air pollutants from stationary and mobile sources. Provides for expedited listing of hazardous air pollutants. Directs the Administrator of the Environmental Protection Agency (EPA), within 90 days after enactment of this Act, to classify 35 substances into two categories for purposes of determining whether such substances are hazardous air pollutants as defined under provisions for national emission standards for hazardous air pollutants (NESHAPs). Requires that 25 substances, including each of the 22 substances listed in specified testimony of the Administrator before Congress, be classified in the first category. Requires that ten additional substances, from among the 37 substances identified to Congress on a specified date by the EPA as being in the assessment phase of the review process, be classified in the second category. Authorizes the Administrator, at any time up to 90 days before the commencement of specified determination proceedings for any substance in the second category, to substitute for that substance another substance if the A…