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42 U.S.C. § 7409 — National primary and secondary ambient
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Page 7185
TITLE 42—THE PUBLIC HEALTH AND WELFARE
§ 7409
Editorial Notes
CODIFICATION
November 15, 1990, referred to in subsec. (e), was in
the original ‘‘enactment of the Clean Air Act Amend-
ments of 1989’’, and was translated as meaning the date
of the enactment of Pub. L. 101–549, popularly known as
the Clean Air Act Amendments of 1990, to reflect the
probable intent of Congress.
Section was formerly classified to section 1857c–3 of
this title.
PRIOR PROVISIONS
A prior section 108 of act July 14, 1955, was renum-
bered section 115 by Pub. L. 91–604 and is classified to
section 7415 of this title.
AMENDMENTS
1998—Subsec. (f)(3), (4). Pub. L. 105–362 struck out par.
(3), which required reports by the Secretary of Trans-
portation and the Administrator to be submitted to
Congress by Jan. 1, 1993, and every 3 years thereafter,
reviewing and analyzing existing State and local air
quality related transportation programs, evaluating
achievement of goals, and recommending changes to
existing programs, and par. (4), which required that in
each report after the first report the Secretary of
Transportation include a description of the actions
taken to implement the changes recommended in the
preceding report.
1990—Subsec. (e). Pub. L. 101–549, § 108(a), inserted
first sentence and struck out former first sentence
which read as follows: ‘‘The Administrator shall, after
consultation with the Secretary of Transportation and
the Secretary of Housing and Urban Development and
State and local officials and within 180 days after Au-
gust 7, 1977, and from time to time thereafter, publish
guidelines on the basic program elements for the plan-
ning process assisted under section 7505 of this title.’’
Subsec. (f)(1). Pub. L. 101–549, § 108(b), in introductor
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Page 7185
TITLE 42—THE PUBLIC HEALTH AND WELFARE
§ 7409
Editorial Notes
CODIFICATION
November 15, 1990, referred to in subsec. (e), was in
the original ‘‘enactment of the Clean Air Act Amend-
ments of 1989’’, and was translated as meaning the date
of the enactment of Pub. L. 101–549, popularly known as
the Clean Air Act Amendments of 1990, to reflect the
probable intent of Congress.
Section was formerly classified to section 1857c–3 of
this title.
PRIOR PROVISIONS
A prior section 108 of act July 14, 1955, was renum-
bered section 115 by Pub. L. 91–604 and is classified to
section 7415 of this title.
AMENDMENTS
1998—Subsec. (f)(3), (4). Pub. L. 105–362 struck out par.
(3), which required reports by the Secretary of Trans-
portation and the Administrator to be submitted to
Congress by Jan. 1, 1993, and every 3 years thereafter,
reviewing and analyzing existing State and local air
quality related transportation programs, evaluating
achievement of goals, and recommending changes to
existing programs, and par. (4), which required that in
each report after the first report the Secretary of
Transportation include a description of the actions
taken to implement the changes recommended in the
preceding report.
1990—Subsec. (e). Pub. L. 101–549, § 108(a), inserted
first sentence and struck out former first sentence
which read as follows: ‘‘The Administrator shall, after
consultation with the Secretary of Transportation and
the Secretary of Housing and Urban Development and
State and local officials and within 180 days after Au-
gust 7, 1977, and from time to time thereafter, publish
guidelines on the basic program elements for the plan-
ning process assisted under section 7505 of this title.’’
Subsec. (f)(1). Pub. L. 101–549, § 108(b), in introductory
provisions, substituted present provisions for provi-
sions relating to Federal agencies, States, and air pol-
lution control agencies within either 6 months or one
year after Aug. 7, 1977.
Subsec. (f)(1)(A). Pub. L. 101–549, § 108(b), substituted
present provisions for provisions relating to informa-
tion prepared in cooperation with Secretary of Trans-
portation, regarding processes, procedures, and meth-
ods to reduce certain pollutants.
Subsec. (f)(3), (4). Pub. L. 101–549, § 111, added pars. (3)
and (4).
Subsec. (g). Pub. L. 101–549, § 108(o), added subsec. (g).
Subsec. (h). Pub. L. 101–549, § 108(c), added subsec. (h).
1977—Subsec. (a)(1)(A). Pub. L. 95–95, § 401(a), sub-
stituted ‘‘emissions of which, in his judgment, cause or
contribute to air pollution which may reasonably be
anticipated to endanger public health or welfare’’ for
‘‘which in his judgment has an adverse effect on public
health or welfare’’.
Subsec. (b)(1). Pub. L. 95–95, § 104(a), substituted ‘‘cost
of installation and operation, energy requirements,
emission reduction benefits, and environmental impact
of the emission control technology’’ for ‘‘technology
and costs of emission control’’.
Subsec. (c). Pub. L. 95–95, § 104(b), inserted provision
directing the Administrator, not later than six months
after Aug. 7, 1977, to revise and reissue criteria relating
to concentrations of NO2 over such period (not more
than three hours) as he deems appropriate, with the
criteria to include a discussion of nitric and nitrous
acids, nitrites, nitrates, nitrosamines, and other car-
cinogenic and potentially carcinogenic derivatives of
oxides of nitrogen.
Subsecs. (e), (f). Pub. L. 95–95, § 105, added subsecs. (e)
and (f).
Statutory Notes and Related Subsidiaries
EFFECTIVE DATE OF 1977 AMENDMENT
Amendment by Pub. L. 95–95 effective Aug. 7, 1977, ex-
cept as otherwise expressly provided, see section 406(d)
of Pub. L. 95–95, set out as a note under section 7401 of
this title.
MODIFICATION OR RESCISSION OF RULES, REGULATIONS,
ORDERS,
DETERMINATIONS,
CONTRACTS,
CERTIFI-
CATIONS, AUTHORIZATIONS, DELEGATIONS, AND OTHER
ACTIONS
All rules, regulations, orders, determinations, con-
tracts, certifications, authorizations, delegations, or
other actions duly issued, made, or taken by or pursu-
ant to act July 14, 1955, the Clean Air Act, as in effect
immediately prior to the date of enactment of Pub. L.
95–95 [Aug. 7, 1977] to continue in full force and effect
until modified or rescinded in accordance with act July
14, 1955, as amended by Pub. L. 95–95 [this chapter], see
section 406(b) of Pub. L. 95–95, set out as an Effective
Date of 1977 Amendment note under section 7401 of this
title.
§ 7409. National primary and secondary ambient
air quality standards
(a) Promulgation
(1) The Administrator—
(A) within 30 days after December 31, 1970,
shall publish proposed regulations prescribing
a national primary ambient air quality stand-
ard and a national secondary ambient air
quality standard for each air pollutant for
which air quality criteria have been issued
prior to such date; and
(B) after a reasonable time for interested
persons to submit written comments thereon
(but no later than 90 days after the initial pub-
lication of such proposed standards) shall by
regulation promulgate such proposed national
primary and secondary ambient air quality
standards with such modifications as he deems
appropriate.
(2) With respect to any air pollutant for which
air quality criteria are issued after December 31,
1970, the Administrator shall publish, simulta-
neously with the issuance of such criteria and
information, proposed national primary and sec-
ondary ambient air quality standards for any
such pollutant. The procedure provided for in
paragraph (1)(B) of this subsection shall apply to
the promulgation of such standards.
(b) Protection of public health and welfare
(1) National primary ambient air quality
standards, prescribed under subsection (a) shall
be ambient air quality standards the attainment
and maintenance of which in the judgment of
the Administrator, based on such criteria and
allowing an adequate margin of safety, are req-
uisite to protect the public health. Such pri-
mary standards may be revised in the same
manner as promulgated.
(2) Any national secondary ambient air qual-
ity standard prescribed under subsection (a)
shall specify a level of air quality the attain-
ment and maintenance of which in the judgment
of the Administrator, based on such criteria, is
requisite to protect the public welfare from any
known or anticipated adverse effects associated
with the presence of such air pollutant in the
ambient air. Such secondary standards may be
revised in the same manner as promulgated.
(c) National primary ambient air quality stand-
ard for nitrogen dioxide
The Administrator shall, not later than one
year after August 7, 1977, promulgate a national
Page 7186
TITLE 42—THE PUBLIC HEALTH AND WELFARE
§ 7409
primary ambient air quality standard for NO2
concentrations over a period of not more than 3
hours unless, based on the criteria issued under
section 7408(c) of this title, he finds that there is
no significant evidence that such a standard for
such a period is requisite to protect public
health.
(d) Review and revision of criteria and stand-
ards; independent scientific review com-
mittee; appointment; advisory functions
(1) Not later than December 31, 1980, and at
five-year intervals thereafter, the Administrator
shall complete a thorough review of the criteria
published under section 7408 of this title and the
national ambient air quality standards promul-
gated under this section and shall make such re-
visions in such criteria and standards and pro-
mulgate such new standards as may be appro-
priate in accordance with section 7408 of this
title and subsection (b) of this section. The Ad-
ministrator may review and revise criteria or
promulgate new standards earlier or more fre-
quently than required under this paragraph.
(2)(A) The Administrator shall appoint an
independent scientific review committee com-
posed of seven members including at least one
member of the National Academy of Sciences,
one physician, and one person representing
State air pollution control agencies.
(B) Not later than January 1, 1980, and at five-
year intervals thereafter, the committee re-
ferred to in subparagraph (A) shall complete a
review of the criteria published under section
7408 of this title and the national primary and
secondary ambient air quality standards pro-
mulgated under this section and shall rec-
ommend to the Administrator any new national
ambient air quality standards and revisions of
existing criteria and standards as may be appro-
priate under section 7408 of this title and sub-
section (b) of this section.
(C) Such committee shall also (i) advise the
Administrator of areas in which additional
knowledge is required to appraise the adequacy
and basis of existing, new, or revised national
ambient air quality standards, (ii) describe the
research efforts necessary to provide the re-
quired information, (iii) advise the Adminis-
trator on the relative contribution to air pollu-
tion concentrations of natural as well as anthro-
pogenic activity, and (iv) advise the Adminis-
trator of any adverse public health, welfare, so-
cial, economic, or energy effects which may re-
sult from various strategies for attainment and
maintenance of such national ambient air qual-
ity standards.
(July 14, 1955, ch. 360, title I, § 109, as added Pub.
L. 91–604, § 4(a), Dec. 31, 1970, 84 Stat. 1679;
amended Pub. L. 95–95, title I, § 106, Aug. 7, 1977,
91 Stat. 691.)
Editorial Notes
CODIFICATION
Section was formerly classified to section 1857c–4 of
this title.
PRIOR PROVISIONS
A prior section 109 of act July 14, 1955, was renum-
bered section 116 by Pub. L. 91–604 and is classified to
section 7416 of this title.
AMENDMENTS
1977—Subsec. (c). Pub. L. 95–95, § 106(b), added subsec.
(c).
Subsec. (d). Pub. L. 95–95, § 106(a), added subsec. (d).
Statutory Notes and Related Subsidiaries
EFFECTIVE DATE OF 1977 AMENDMENT
Amendment by Pub. L. 95–95 effective Aug. 7, 1977, ex-
cept as otherwise expressly provided, see section 406(d)
of Pub. L. 95–95, set out as a note under section 7401 of
this title.
MODIFICATION OR RESCISSION OF RULES, REGULATIONS,
ORDERS,
DETERMINATIONS,
CONTRACTS,
CERTIFI-
CATIONS, AUTHORIZATIONS, DELEGATIONS, AND OTHER
ACTIONS
All rules, regulations, orders, determinations, con-
tracts, certifications, authorizations, delegations, or
other actions duly issued, made, or taken by or pursu-
ant to act July 14, 1955, the Clean Air Act, as in effect
immediately prior to the date of enactment of Pub. L.
95–95 [Aug. 7, 1977] to continue in full force and effect
until modified or rescinded in accordance with act July
14, 1955, as amended by Pub. L. 95–95 [this chapter], see
section 406(b) of Pub. L. 95–95, set out as an Effective
Date of 1977 Amendment note under section 7401 of this
title.
TERMINATION OF ADVISORY COMMITTEES
Advisory committees established after Jan. 5, 1973, to
terminate not later than the expiration of the 2-year
period beginning on the date of their establishment,
unless, in the case of a committee established by the
President or an officer of the Federal Government, such
committee is renewed by appropriate action prior to
the expiration of such 2-year period, or in the case of
a committee established by the Congress, its duration
is otherwise provided for by law. See section 1013 of
Title 5, Government Organization and Employees.
ROLE OF SECONDARY STANDARDS
Pub. L. 101–549, title VIII, § 817, Nov. 15, 1990, 104 Stat.
2697, provided that:
‘‘(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 en-
vironment. 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 sec-
tion 108 [42 U.S.C. 7408] and other pollutants which
may be listed;
‘‘(2) estimate welfare and environmental costs in-
curred as a result of such effects;
‘‘(3) examine the role of secondary standards and
the State implementation planning process in pre-
venting 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 meet-
ing secondary standards; and
‘‘(6) consider other means consistent with the goals
and objectives of the Clean Air Act [42 U.S.C. 7401 et
seq.] which may be more effective than secondary
standards in preventing or mitigating such effects.
‘‘(b) SUBMISSION TO CONGRESS; COMMENTS; AUTHORIZA-
TION.—(1) The report shall be transmitted to the Con-
gress not later than 3 years after the date of enactment
of the Clean Air Act Amendments of 1990 [Nov. 15, 1990].
‘‘(2) At least 90 days before issuing a report the Ad-
ministrator shall provide an opportunity for public
comment on the proposed report. The Administrator
shall include in the final report a summary of the com-
ments received on the proposed report.
‘‘(3) There are authorized to be appropriated such
sums as are necessary to carry out this section.’’
Page 7187
TITLE 42—THE PUBLIC HEALTH AND WELFARE
§ 7410
§ 7410. State implementation plans for national
primary and secondary ambient air quality
standards
(a) Adoption of plan by State; submission to Ad-
ministrator; content of plan; revision; new
sources; indirect source review program;
supplemental or intermittent control systems
(1) Each State shall, after reasonable notice
and public hearings, adopt and submit to the Ad-
ministrator, within 3 years (or such shorter pe-
riod as the Administrator may prescribe) after
the promulgation of a national primary ambient
air quality standard (or any revision thereof)
under section 7409 of this title for any air pollut-
ant, a plan which provides for implementation,
maintenance, and enforcement of such primary
standard in each air quality control region (or
portion thereof) within such State. In addition,
such State shall adopt and submit to the Admin-
istrator (either as a part of a plan submitted
under the preceding sentence or separately)
within 3 years (or such shorter period as the Ad-
ministrator may prescribe) after the promulga-
tion of a national ambient air quality secondary
standard (or revision thereof), a plan which pro-
vides for implementation, maintenance, and en-
forcement of such secondary standard in each
air quality control region (or portion thereof)
within such State. Unless a separate public
hearing is provided, each State shall consider its
plan implementing such secondary standard at
the hearing required by the first sentence of this
paragraph.
(2) Each implementation plan submitted by a
State under this chapter shall be adopted by the
State after reasonable notice and public hear-
ing. Each such plan shall—
(A) include enforceable emission limitations
and other control measures, means, or tech-
niques (including economic incentives such as
fees, marketable permits, and auctions of
emissions rights), as well as schedules and
timetables for compliance, as may be nec-
essary or appropriate to meet the applicable
requirements of this chapter;
(B) provide for establishment and operation
of appropriate devices, methods, systems, and
procedures necessary to—
(i) monitor, compile, and analyze data on
ambient air quality, and
(ii) upon request, make such data available
to the Administrator;
(C) include a program to provide for the en-
forcement of the measures described in sub-
paragraph (A), and regulation of the modifica-
tion and construction of any stationary source
within the areas covered by the plan as nec-
essary to assure that national ambient air
quality standards are achieved, including a
permit program as required in parts C and D;
(D) contain adequate provisions—
(i) prohibiting, consistent with the provi-
sions of this subchapter, any source or other
type of emissions activity within the State
from emitting any air pollutant in amounts
which will—
(I) contribute significantly to nonattain-
ment in, or interfere with maintenance by,
any other State with respect to any such
national primary or secondary ambient air
quality standard, or
(II) interfere with measures required to
be included in the applicable implementa-
tion plan for any other State under part C
to prevent significant deterioration of air
quality or to protect visibility,
(ii) insuring compliance with the applica-
ble requirements of sections 7426 and 7415 of
this title (relating to interstate and inter-
national pollution abatement);
(E) provide (i) necessary assurances that the
State (or, except where the Administrator
deems inappropriate, the general purpose local
government or governments, or a regional
agency designated by the State or general pur-
pose local governments for such purpose) will
have adequate personnel, funding, and author-
ity under State (and, as appropriate, local) law
to carry out such implementation plan (and is
not prohibited by any provision of Federal or
State law from carrying out such implementa-
tion plan or portion thereof), (ii) requirements
that the State comply with the requirements
respecting State boards under section 7428 of
this title, and (iii) necessary assurances that,
where the State has relied on a local or re-
gional government, agency, or instrumen-
tality for the implementation of any plan pro-
vision, the State has responsibility for ensur-
ing adequate implementation of such plan pro-
vision;
(F) require, as may be prescribed by the Ad-
ministrator—
(i) the installation, maintenance, and re-
placement of equipment, and the implemen-
tation of other necessary steps, by owners or
operators of stationary sources to monitor
emissions from such sources,
(ii) periodic reports on the nature and
amounts of emissions and emissions-related
data from such sources, and
(iii) correlation of such reports by the
State agency with any emission limitations
or standards established pursuant to this
chapter, which reports shall be available at
reasonable times for public inspection;
(G) provide for authority comparable to that
in section 7603 of this title and adequate con-
tingency plans to implement such authority;
(H) provide for revision of such plan—
(i) from time to time as may be necessary
to take account of revisions of such national
primary or secondary ambient air quality
standard or the availability of improved or
more expeditious methods of attaining such
standard, and
(ii) except as provided in paragraph (3)(C),
whenever the Administrator finds on the
basis of information available to the Admin-
istrator that the plan is substantially inad-
equate to attain the national ambient air
quality standard which it implements or to
otherwise comply with any additional re-
quirements established under this chapter;
(I) in the case of a plan or plan revision for
an area designated as a nonattainment area,
meet the applicable requirements of part D
(relating to nonattainment areas);
(J) meet the applicable requirements of sec-
tion 7421 of this title (relating to consulta-
Cross-references
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Federal law — U.S. Code and appendices · legal_authorities
**(a) Findings** The Congress finds—
(1) that the predominant part of the Nation’s population is located in its rapidly expanding metropolitan and other urban areas, which generally cross the boundary lines of local jurisdictions and often extend into two or more States;
(2) that the growth in the amount and complexity of air pollution brought about by urbanization, industrial development, and the increasing use of motor vehicles, has resulted in mounting dangers to the public health and welfare, including injury to agricultural crops and livestock, damage to and the deterioration of property, and hazards to air and ground transportation;
(3) that air pollution prevention (that is, the reduction or elimination, through any measures, of the amount of pollutants produced or created at the source) and air pollution control at its source is the primary responsibility of States and local governments; and
(4) that Federal financial assistance and leadership is essential for the development of cooperative Federal, State, regional, and local programs to prevent and control air pollution.
**(b) Declaration** The purposes of this subchapter are—
(1) to protect and enhance the quality of the Nation’s air resources so as to promote the public health and welfare and the productive capacity of its population;
(2) to initiate and accelerate a national research and development program to achieve the prevention and control of air pollution;
(3) to provide technical and financial assistance to State and local governments in connection with the development and execution of their air pollution prevention and control programs; and
(4) to encourage and assist the development and operation of regional air pollution prevention and control programs.
**(c) Pollution prevention** A prim
Source: Supplied U.S. Code snapshot — release unconfirmed · 42 U.S.C. § 7401
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Federal law — U.S. Code and appendices · legal_authorities
Page 7160
TITLE 42—THE PUBLIC HEALTH AND WELFARE
§ 7401
Sec.
PART C—CLEAN FUEL VEHICLES
7581.
Definitions.
7582.
Requirements applicable to clean-fuel vehi-
cles.
7583.
Standards for light-duty clean-fuel vehicles.
7584.
Administration and enforcement as per Cali-
fornia standards.
7585.
Standards for heavy-duty clean-fuel vehicles
(GVWR above 8,500 up to 26,000 lbs.).
7586.
Centrally fueled fleets.
7587.
Vehicle conversions.
7588.
Federal agency fleets.
7589.
California pilot test program.
7590.
General provisions.
SUBCHAPTER III—GENERAL PROVISIONS
7601.
Administration.
7602.
Definitions.
7603.
Emergency powers.
7604.
Citizen suits.
7605.
Representation in litigation.
7606.
Federal procurement.
7607.
Administrative proceedings and judicial re-
view.
7608.
Mandatory licensing.
7609.
Policy review.
7610.
Other authority.
7611.
Records and audit.
7612.
Economic impact analyses.
7613.
Repealed.
7614.
Labor standards.
7615.
Separability.
7616.
Sewage treatment grants.
7617.
Economic impact assessment.
7618.
Repealed.
7619.
Air quality monitoring.
7620.
Standardized air quality modeling.
7621.
Employment effects.
7622.
Employee protection.
7623.
Repealed.
7624.
Cost of vapor recovery equipment.
7625.
Vapor recovery for small business marketers
of petroleum products.
7625–1.
Exemptions for certain territories.
7625a.
Statutory construction.
7626.
Authorization of appropriations.
7627.
Air pollution from Outer Continental Shelf
activities.
7628.
Demonstration grant program for local gov-
ernments.
SUBCHAPTER IV—NOISE POLLUTION
7641.
Noise abatement.
7642.
Authorization of appropriations.
SUBCHAPTER IV–A—ACID DEPOSITION CONTROL
7651.
Findings and purposes.
7651a.
Definitions.
7651b.
Source: Supplied 2024 U.S. Code historical extraction · 42 U.S.C. § 7401
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Federal law — U.S. Code and appendices · legal_authorities
**(a) Air pollutant list; publication and revision by Administrator; issuance of air quality criteria for air pollutants**
(1) For the purpose of establishing national primary and secondary ambient air quality standards, the Administrator shall within 30 days after December 31, 1970, publish, and shall from time to time thereafter revise, a list which includes each air pollutant—
(A) emissions of which, in his judgment, cause or contribute to air pollution which may reasonably be anticipated to endanger public health or welfare;
(B) the presence of which in the ambient air results from numerous or diverse mobile or stationary sources; and
(C) for which air quality criteria had not been issued before December 31, 1970 but for which he plans to issue air quality criteria under this section.
(2) The Administrator shall issue air quality criteria for an air pollutant within 12 months after he has included such pollutant in a list under paragraph (1). Air quality criteria for an air pollutant shall accurately reflect the latest scientific knowledge useful in indicating the kind and extent of all identifiable effects on public health or welfare which may be expected from the presence of such pollutant in the ambient air, in varying quantities. The criteria for an air pollutant, to the extent practicable, shall include information on—
(A) those variable factors (including atmospheric conditions) which of themselves or in combination with other factors may alter the effects on public health or welfare of such air pollutant;
(B) the types of air pollutants which, when present in the atmosphere, may interact with such pollutant to produce an adverse effect on public health or welfare; and
(C) any known or anticipated adverse effects on welfare.
**(b) Issuance
Source: Supplied U.S. Code snapshot — release unconfirmed · 42 U.S.C. § 7408
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Federal law — U.S. Code and appendices · legal_authorities
Page 7183
TITLE 42—THE PUBLIC HEALTH AND WELFARE
§ 7408
1 See Codification note below.
95–95, set out as an Effective Date of 1977 Amendment
note under section 7401 of this title.
MODIFICATION OR RESCISSION OF RULES, REGULATIONS,
ORDERS,
DETERMINATIONS,
CONTRACTS,
CERTIFI-
CATIONS, AUTHORIZATIONS, DELEGATIONS, AND OTHER
ACTIONS
All rules, regulations, orders, determinations, con-
tracts, certifications, authorizations, delegations, or
other actions duly issued, made, or taken by or pursu-
ant to act July 14, 1955, the Clean Air Act, as in effect
immediately prior to the date of enactment of Pub. L.
95–95 [Aug. 7, 1977] to continue in full force and effect
until modified or rescinded in accordance with act July
14, 1955, as amended by Pub. L. 95–95 [this chapter], see
section 406(b) of Pub. L. 95–95, set out as an Effective
Date of 1977 Amendment note under section 7401 of this
title.
§ 7408. Air quality criteria and control tech-
niques
(a) Air pollutant list; publication and revision by
Administrator; issuance of air quality cri-
teria for air pollutants
(1) For the purpose of establishing national
primary and secondary ambient air quality
standards, the Administrator shall within 30
days after December 31, 1970, publish, and shall
from time to time thereafter revise, a list which
includes each air pollutant—
(A) emissions of which, in his judgment,
cause or contribute to air pollution which may
reasonably be anticipated to endanger public
health or welfare;
(B) the presence of which in the ambient air
results from numerous or diverse mobile or
stationary sources; and
(C) for which air quality criteria had not
been issued before December 31, 1970 but for
which he plans to issue air quality criteria
under this section.
(2) The Adminis
Source: Supplied 2024 U.S. Code historical extraction · 42 U.S.C. § 7408
Stored review status: historical_2024_not_currentness_verified. The source passage cites 42 U.S.C. § 7408. This identifies an authority to review, not proof of applicability.
Federal law — U.S. Code and appendices · legal_authorities
**(a) Promulgation**
(1) The Administrator—
(A) within 30 days after December 31, 1970, shall publish proposed regulations prescribing a national primary ambient air quality standard and a national secondary ambient air quality standard for each air pollutant for which air quality criteria have been issued prior to such date; and
(B) after a reasonable time for interested persons to submit written comments thereon (but no later than 90 days after the initial publication of such proposed standards) shall by regulation promulgate such proposed national primary and secondary ambient air quality standards with such modifications as he deems appropriate.
(2) With respect to any air pollutant for which air quality criteria are issued after December 31, 1970, the Administrator shall publish, simultaneously with the issuance of such criteria and information, proposed national primary and secondary ambient air quality standards for any such pollutant. The procedure provided for in paragraph (1)(B) of this subsection shall apply to the promulgation of such standards.
**(b) Protection of public health and welfare**
(1) National primary ambient air quality standards, prescribed under subsection (a) shall be ambient air quality standards the attainment and maintenance of which in the judgment of the Administrator, based on such criteria and allowing an adequate margin of safety, are requisite to protect the public health. Such primary standards may be revised in the same manner as promulgated.
(2) Any national secondary ambient air quality standard prescribed under subsection (a) shall specify a level of air quality the attainment and maintenance of which in the judgment of the Administrator, based on such criteria, is requisite to protect the public welfare from any know
Source: Supplied U.S. Code snapshot — release unconfirmed · 42 U.S.C. § 7409
Stored review status: release_metadata_unconfirmed. Same stored citation; legal effect and authority still require review.