address long range strategies for addressing regional haze
which impairs visibility in affected class I areas.
"(e) Duties of the Administrator.-(1) The Administrator shall,
taking into account the studies pursuant to subsection (a)(1) and the
reports pursuant to subsection (d)(2) and any other relevant
information, within eighteen months of receipt of the report referred
to in subsection (d)(2) of this section, carry out the Administrator's
regulatory responsibilities under section 169A, including criteria for
measuring `reasonable progress' toward the national goal.
"(2) Any regulations promulgated under section 169A of this title
pursuant to this subsection shall require affected States to revise
within 12 months their implementation plans under section 110 of this
title to contain such emission limits, schedules of compliance,
and other measures as may be necessary to carry out regulations
promulgated pursuant to this subsection.
"(f) Grand Canyon Visibility Transport Commission.-The
Administrator pursuant to subsection (c)(1) shall, within 12 months,
establish a visibility transport commission for the region affecting
the visibility of the Grand Canyon National Park.".
SEC. 817. ROLE OF SECONDARY STANDARDS
(a) Report.-The Administrator shall request the National Academy
of Sciences to prepare a report to the Congress on the role of
national secondary ambient air quality standards in protecting welfare
and the environment. The report shall:
(1) include information on the effects on welfare and the
environment which are caused by ambient concentrations of
pollutants listed pursuant to section 108 and other pollutants
which may be listed;
(2) estimate welfare and environmental costs incurred as a
result of such effects;
(3) examine the role of secondary standards and the State
implementation planning process in preventing such effects;
(4) determine ambient concentrations of each such pollutant
which would be adequate to protect welfare and the environment
from such effects;
(5) estimate the costs and other impacts of meeting secondary
(6) consider other means consistent with the goals and
objectives of the Clean Air Act which may be more effective than
secondary standards in preventing or mitigating such effects.
(b) Submission to Congress; Comments; Authorization.-(1) The
report shall be transmitted to the Congress not later than 3 years
after the date of enactment of the Clean Air Act Amendments of 1990.
(2) At least 90 days before issuing a report the Administrator
shall provide an opportunity for public comment on the proposed
report. The Administrator shall include in the final report a summary
of the comments received on the proposed report.
(3) There are authorized to be appropriated such sums as are
necessary to carry out this section.
SEC. 818. INTERNATIONAL BORDER AREAS.
Subpart 1 of part D of title I of the Clean Air Act is amended by
adding at the end thereof the following new section:
"SEC. 179B. INTERNATIONAL BORDER AREAS.
"(a) Implementation Plans and Revisions.-Notwithstanding any
other provision of law, an implementation plan or plan revision
required under this Act shall be approved by the Administrator if-