To provide for a four-year moratorium on the establishment of new standards for ozone and fine particulate matter under the Clean Air Act, pending further implementation of the Clean Air Act Amendments of 1990, additional review and air quality monitoring under that Act.

Places a four-year moratorium on the promulgation of new or revised national ambient air quality standards for ozone or fine particulate matter under the Clean Air Act by the Administrator of the Environmental Protection Agency.

Requires the Administrator, within five years of this Act's enactment date, to: (1) complete a review of the air quality criteria and standards for ozone and particulate matter; and (2) determine whether to retain or revise such standards or promulgate new standards.

Directs the Administrator, in reviewing such criteria for particulate matter, to: (1) evaluate any adverse health effects of exposure to airborne particulate matter; (2) determine the amount and size of particles inhaled and retained in the lungs; and (3) investigate the biological mechanisms by which particulate matter may induce adverse health effects.

Authorizes the Administrator to require State implementation plans to require air quality monitoring for fine particulate matter and to make grants to States for such purposes.

Authorizes appropriations.