NATICH
NEWSLETTER
453N91003
TITLE III
SPECIAL EDITION
Produced by the National Air Toxics Information Clearinghouse
March 1991
The Clean Air Act Amendments of 1990 Reviewed
In June 1989, President Bush
proposed sweeping revisions to the
Clean Air Act. Building on Con-
gressional proposals advanced dur-
ing the 1980s, the President pro-
posed legislation designed to curb
three major threats to the Nation's
environment and to the health of
millions of Americans: acid rain,
urban air pollution, and toxic air
emissions. The proposal also called
for establishing a national permits
program and an improved enforce-
ment program to help ensure bet-
ter compliance with the Clean Air
Act.
By large votes, both the House
of Representatives (401 to 21) and
the Senate (89 to 11) passed Clean
Air bills that contained the major
components of the President's pro-
posals. Both bills also added provi-
sions requiring the phasing out of
ozone-depleting chemicals, gener-
ally along the same schedule out-
lined in international negotiations
(Revised Montreal Protocol). The
Senate and House bills also added
specific research and development
provisions, as well as detailed pro-
grams to address accidental re-
leases of toxic air pollutants.
A joint conference committee
met from July to October 1990 to
resolve differences in the bills and
both Houses overwhelmingly voted
out the package recommended by
the Conferees. The President re-
From the Editor
The Clean Air Act Amendments of1990 will significantly affect State and local
air pollution control agencies, industry, EPA, and most importantly, our air quality.
This special edition of the Newsletter provides an overview of Title IIJ - Hazardous
Air Pollutants. Readers are encouraged to obtain a copy of the amendments (see inset)
and to familiarize themselves with the details of the provisions. The Newsletter will
continue to cover projects related to the amendments such as emission standards develop-
ment and other EPA, State and local activities.
The amendments require that EPA technical assistance centers including
NATICH, Air RISC, and the Control Technology Center continue to provide assistance
and technical information. The NATICH staff realizes that as State and local air toxics
personnel work to incorporate the requirements of the new amendments into their air
toxics programs, the types of assistance needed may change as well. We would like to
hear any comments or suggestions on how NATICH could be improved, particularly
what changes to the NATICH data base would be helpful. We also welcome ideas and
articles for the Newsletter. Please call the NATICH staff at (919) 541-0850 or (FTS)
629-0850 with your comments.
Martha Keating
Editor

ceived the bill from Congress on
November 14, 1990, and signed it
on November 15, 1990.
(continued on page 2)
How to Order the
1990 Clean Air
Act Amendments
The Clean Air Act
Amendments of 1990 are
available through:
Office of Superintendent of
Documents
U.S. Government Printing
Office
Washington, D.C. 20402
Telephone: (202) 275-3030
The report number is 101952
and it costs $11.00.
In This Issue
Hazardous Air Pollutants -
Provisions of Title III
Described 2
Title III Requires Special
Studies 4
EPA to Issue Source Category
Emission Standards 7
Title V - Permits Designed
to Improve Compliance 8
Title III Expands Accident
Prevention Program 9
Apr 4 ig31

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Clean Air Act Amendments (continued)
Several progressive and crea-
tive new themes are embodied in
the Amendments, themes neces-
sary for effectively achieving the
air quality goals and regulatory
reform expected from these far-
reaching amendments. Specifically
the new law:
•	encourages the use of market-
based principles and other in-
novative approaches like per-
formance-based standards and
emission banking and trading;
•	provides a framework from
which alternative clean fuels
will be used by setting stan-
dards in the fleet and California
pilot program that can be met
by the most cost-effective com-
bination of fuels and technology;
•	promotes the use of clean, low-
sulfur coal and natural gas, as
well as innovative technologies
to clean high-sulfur coal through
the acid rain program;
•	reduces energy waste and
creates a market for clean fuels
derived from grain and natural
gas in order to cut dependency
on oil imports by one million
barrels per day; and
•	promotes energy conservation
through an acid rain program
that gives utilities the flexibility
to obtain needed emission
reductions through programs
that encourage customers to
conserve energy.
The Amendments include 11 Titles:
•	Title I - Attainment and
Maintenance of National Am-
bient Air Quality Standards
•	Title II - Mobile Sources
•	Title III - Hazardous Air
Pollutants
•	Title IV - Acid Deposition
•	Title V - Permits
•	Title VI - Stratospheric Ozone
Protection
•	Title VII - Enforcement
•	Title VIII - Miscellaneous
•	Title IX - Clean Air Research
•	Title X - Disadvantaged
Business Concerns
•	Title XI - Clean Air Employ-
ment Transition Assistance
Hazardous Air Pollutants -
Provisions of Title III Described
Title III of the Clean Air Act
Amendments of 1990 details a
comprehensive plan for achieving
reductions in emissions of hazard-
ous air pollutants. The new law
will enable EPA to address air tox-
ics more effectively and dramati-
cally accelerate progress in con-
trolling emissions. A schematic
overview of Title III is presented
in Figure 1. The major provisions
of Title III are described below
and the inset shows the special
studies mandated.
Pollutant List
Title III establishes a list of
189 hazardous air pollutants (see
Table 1). Any person may petition
EPA to add or delete a pollutant
from the list. The petitioner must
show that there are adequate data
on the health and environmental
effects of the pollutant or other
evidence that supports the peti-
tion. The EPA is currently prepar-
ing guidance that will be published
in the Federal Register this spring
explaining what an adequate peti-
Figure 1
Pollutant

List

Petitions
18 month review
Review
within
8 Years

Source



Category
List

Petitions



Published in 1 year
12 month review



Regulatory
Agenda
Published in 2 years

Review
within
8 Years
Compliance
Extensions
Early Emission
Installation
Reduction
of Controls
6 yr extension
1 ytar extension
BACT or
LAER
Is vr» from lnalallati°n
Health-based
Emissions
Standards

—
State
Operating
Permit
2

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Hazardous Air Pollutants (continued)
tion must contain. The EPA must
grant or deny the petition within
18 months after its receipt by pub-
lishing a written explanation of the
decision in the Federal Register.
Source. Category List
The list of major and area
source categories and subcategor-
ies emitting one or more of the
189 hazardous air pollutants will
be published in draft form this
spring. After opportunity for com-
ment, the final list will be pub-
lished by November 1991, and
must be reviewed and revised, if
appropriate, at least every 8 years.
As with the pollutant list, any per-
son may petition EPA to delete a
source category from the list. The
petitioner must show that no
source in the category emits
pollutants in quantities that may
cause a lifetime risk of cancer
greater than one in one million to
the most exposed individual, or ex-
ceed a level adequate to protect
public health and the environment
with an ample margin of safety.
A major source is defined as
"any stationary source or group of
stationary sources located within a
contiguous area and under com-
mon control that emits or has the
potential to emit considering con-
trols, in the aggregate, 10 tons per
year or more of any hazardous air
pollutant or 25 tons per year or
more of a mixture of hazardous air
pollutants." The Administrator
may also establish a lower quantity
to define a major source based on
characteristics of the pollutant
such as potency, persistence, bioac-
cumulation, or other relevant fac-
tors. An area source is defined as
any stationary source that is a non-
major source.
Regulatory Agenda
A schedule establishing dates
for promulgation of emission stan-
dards for each listed source cate-
gory will be published after public
comment but within 2 years after
enactment. The EPA must promul-
gate emissions standards for at
least 40 categories and subcate-
gories within 2 years of enactment,
followed by emissions standards
for coke oven batteries by Decem-
ber 31, 1992. Twenty-five percent
of the listed source categories and
subcategories must be regulated
within 4 years of enactment, 50
percent within 7 years, and 100
percent within 10 years. The EPA
must consider the following factors
when determining priorities for
promulgating the standards: the
known or anticipated adverse ef-
fect on human health and the en-
vironment; the quantity and loca-
tion of emissions; and the efficien-
cy of grouping the categories by
pollutants emitted, or by the pro-
cesses or technologies used. The
general deadlines for promulgating
emission standards are shown in
Figure 2.
Technology-Based Emission
Standards
Technology-based emissions
standards must achieve the max-
imum degree of emissions reduc-
tion deemed achievable by EPA.
This is commonly referred to as
maximum achievable control tech-
nology, or MACT. In determining
Figure 2
Year
Petition guidance
List of major sources
Early reduction guidance
Modifications guidance
Schedule for standards
MACT for 41 source categories
MACT for 1st 25% categories
MACT for 2nd 25% categories
MACT for remaining categories
Residual risk 41 SC's
Residual risk 1st 25% categories
Residual risk 2nd 25% categories
Residual risk remaining SC's
Accidental release list/regs.
90 92 94 96 98 0 2 4
	1—I	1	1—.	1			1	1	1	1	1—		1—
w ; ; i;
Proposal
Promulgation
Other Federal
Actions

State Action Source Action
m
3

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Hazardous Air Pollutants
(continued)
MACT for a given source category
or subcategory, EPA must consider
the cost of achieving the emissions
reduction, health and environmen-
tal impacts, and energy require-
ments. For area sources, EPA has
the discretion to apply generally
available control technologies
(GACT) or management practices
in lieu of MACT requirements.
Development of the technology-
based emission standards are dis-
cussed in detail beginning on
page 7.
Compliance Extensions
In general, sources have 3
years to comply with the technolo-
ogy-based standards. A
1-year extension may be
granted if additional
time is needed for the
installation of controls.
Existing sources may
apply for a 5-year exten-
sion if they have in-
stalled either best avail-
able control technology
or technology required
to meet a lowest achiev-
able emission rate,
prior to promulgation of
an emissions standard.
For existing sources
achieving early reduc-
tions in emissions of 90
percent (95 percent for
hazardous air pollutants
which are particulates),
a 6-year compliance ex-
tension may be granted.
Early reductions are
described in more detail in the
following article on emission stan-
dards (see page 7).
Health-based Emission Standards
Within 6 years of enactment of
the new law, EPA must prepare
a report to Congress concerning
issues related to risk assessment.
Congress may enact new legisla-
tion in response to the findings and
recommendations of the report. If
Congress does not act, EPA must
promulgate health-based standards
if needed to protect public health
and the environment with an am-
ple margin of safety. If necessary,
such standards will be promulgated
8 years after the promulgation of
the technology- based emission
standards. Health-based emission
standards are discussed in more
detail in the following article on
emission standards (see page 7).
Operating Permits
All of the titles of the new
amendments, including Title III,
are to be implemented and en-
forced through a State or local
operating permit program. State
and local governments will apply
to EPA for approval to implement
the permit program, and if approved
will be able to assess permit fees.
Sources subject to Title III require-
ments may not operate without a
permit issued by the State or local
agency, or by EPA if the State fails
to develop an adequate program.
There will be a period of 1 to 3
years before State permit pro-
grams are in place. In the mean-
time, sources must still comply
with emissions standards already
promulgated. Emission standards
continue to be federally enforceable
with or without an operating per-
mit. This significant new program
will greatly strengthen enforce-
ment of the Clean Air Act by pro-
viding for sufficient revenues for
enforcement agencies and detailed
information and permit conditions
for sources. The operating permit
provisions of Title V are described
in a following article (see page 8).
Two provisions in Title III
related to permitting deserve
special attention because of the
potential implications for State pro-
grams. Sections 112(g) and (j) both
apply on the date a State permit
program becomes effective. Sec-
tion 112(g) requires a
case- by-case control
technology evaluation of
major sources which are
new, modified or recon-
structed. The State or
local permitting author-
ity must perform this
evaluation and deter-
mine the appropriate
control technology and
emissions limit. The
control technology and
emissions limit selected
must reflect what EPA
would determine to be
maximum achievable
control technology, even
if EPA has not pro-
mulgated (or proposed)
an emissions standard
for that source category.
Sources may offset
emissions of pollutants,
subject to certain restrictions, to
avoid triggering the modification
definition. A modification is defined
as any change that results in more
than a de minimis increase in the
emissions of a listed hazardous air
pollutant, or results in the emis-
sions of a hazardous air pollutant
not previously emitted in more
than the de minimis amount.
The EPA will issue guidance
within 18 months of enactment
and after public comment on this
provision.
Title III Requires Special Studies
Title III requires that EPA conduct the following
studies in addition to developing emission standards.
Readers should consult the specific section in Title III
for additional information and regulatory schedules.
•	Atmospheric Deposition to the Great Lakes and
Coastal Waters [Section 112(m)]
•	Area Source Program [Section 112(k)]
•	Electric Utility Steam Generating Units [Section
112(n)]
•	Coke Oven Production Technology Study [Section
112(n)]
•	Publicly-Owned Treatment Works [Section 112(n)]
•	Hydrogen Sulfide Assessment [Section 112(n)]
•	Hydrofluoric Acid Study [Section 112(n)]
•	National Academy of Sciences Study on Risk Assess-
ment [Section 112(o)]
4

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Table 1. Hazardous Air Pollutants Subject to the Provisions of Section 112 of the 1990 Clean Air Act Amendments
Chemical Name	CAS No.	Chemical Name	CAS No.
Acetaldehyde	75070
Acetamide	60355
Acetonitrile	75058
Acetophenone	98862
Acetylaminofluorene(2)	53963
Acrolein	107028
Acrylamide	79061
Acrylic acid	79107
Acrylonitrile	107131
Allyl chloride	107051
Aminobiphenyl(4)	92671
Aniline	62533
Anisidine(o)	90040
Antimony Compounds		
Arsenic Compounds
(inorganic including arsine)		
Asbestos	1332214
Benzene	71432
Benzidine	92875
Benzotrichloride	98077
Benzyl chloride	100447
Beryllium Compounds		
Biphenyl	192524
Bis(2-ethylhexyl)phthalate (DEHP)	117817
Bis(chloromethyl)ether	542881
Bromoform	75252
Butadiene(l,3)	106990
Cadmium Compounds		
Calcium cyanamide	156627
Caprolactam	105602
Captan	133062
Carbaryl	63252
Carbon disulfide	75150
Carbon tetrachloride	56235
Carbonyl sulfide	463581
Catechol	120809
Chloramben	133904
Chlordane	57749
Chlorine	7782505
Chloroacetic acid	79118
Chloroacetophenone(2)	532274
Chlorobenzene	108907
Chlorobenzilate	510156
Chloroform	67663
Chloromethyl methyl ether	107302
Chloroprene
(Neoprene; 2-Chloro-l,3-butadiene)	126998
Chromium Compounds		
Cobalt Compounds		
Coke Oven Emissions		
Cresol(m)	108394
Cresol(o)	95487
Cresol(p)	106445
Cresols/Cresylic acid	1319773
Cumene (Isopropylbenzene)	98828
Cyanide Compounds'		
D(2,4), salts and esters	94757
DDE	3547044
Diazomethane	334883
Dibenzofurans	132649
Dibromo-3-chloropropane(l,2)	96128
Dibutylphthalate	84742
Dichlorobenzene(l,4)(p)	106467
Dichlorobenzidene(3,3)	91941
Dichloroethyl ether
(Bis(2-chloroethyl)ether)	111444
Dichloropropene(l,3)	542756
Dichlorvos	62737
Diethanolamine	111422
Diethyl aniline (N,N)
(Dimethylaniline (N,N))	121697
Diethyl sulfate	64675
Dimethoxybenzidine(3,3')	119904
Dimethyl aminoazobenzene	60117
Dimethyl benzidine(3,3')	119937
Dimethyl carbamoyl chloride	79447
Dimethyl formamide	68122
Dimethyl hydrazine(l,l)	57147
Dimethyl phthalate	131113
Dimethyl sulfate	77781
Dinitro-o-cresol(4,6), and salts	534521
Dinitrophenol(2,4)	51285
Dinitrotoluene(2,4)	121142
Dioxane(l,4) (1,4-Diethyleneoxide)	123911
Diphenylhydrazine(l,2)	122667
Epichlorohydrin
(Chloro-2,3-epoxypropane(l))	106898
Epoxybutane(l,2) (1,2-Butylene oxide)	106887
Ethyl acrylate	140885
Ethyl benzene	100414
Ethyl carbamate (Urethane)	51796
Ethyl chloride (Chloroethane)	75003
Ethylene dibromide (1,2-Dibromoethane)	106934
Ethylene dichloride (1,2-Dichloroethane)	107062
Ethylene glycol	107211
Ethylene imine (Aziridine)	151564
Ethylene oxide	75218
Ethylene thiourea	96457
Ethylidene dichloride
(1,1-Dichloroe thane)	75343
Formaldehyde	50000
Glycol ethers2		
1	X'CN where X = H' or any other group where a formal dissociation may occur, for example, KCN or Ca(CN)r
2	Includes mono- and di- ethers of ethylene glycol, diethylene glycol and triethylene glycol R-(OCH2CH2)n-OR' where:
n = 1, 2, or 3
R = alkyl or aryl groups
R' = R, H, or group which, when removed, yield glycol ethers with the structure: R-(OCH2CH)n-OH. Polymers are
excluded from the glycol category.
5

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Chemical Name		 CAS No.
Heptachlor	76448
Hexachlorobenzene	118741
Hexachlorobutadiene	87683
Hexachlorocyclopentadiene	77474
Hexachloroethane	67721
Hexamethylene-1,6-diisocyanate	822060
Hexamethylphosphoramide	680319
Hexane	110543
Hydrazine	302012
Hydrochloric acid	7647010
Hydrogen fluoride (Hydrofluoric acid)	7664393
Hydroquinone	123319
Isophorone	78591
Lead Compounds		
Lindane (all isomers)	58899
Maleic anhydride	108316
Manganese Compounds	—
Mercury Compounds		
Methanol	67561
Methoxychlor	72435
Methyl bromide (Bromomethane)	74839
Methyl chloride (Chloromethane)	74873
Methyl chloroform (1,1,1-Trichloroethane)	71556
Methyl ethyl ketone (2-Butanone)	78933
Methyl hydrazine	60344
Methyl iodide (Iodomethane)	74884
Methyl isobutyl ketone (Hexone)	108101
Methyl isocyanate	624839
Methyl methacrylate ,	80626
Methyl tert butyl ether	1634044
Methylene bis(2-chloroaniline)(4,4)	101144
Methylene chloride (Dichloromethane)	75092
Methylene diphenyl diisocynate (MDI)	101688
Methylenedianiline(4,4')	101779
Mineral fibers'	—
Naphthalene	91203
Nickel Compounds		
Nitrobenzene	98953
Nitrobiphenyl(4)	92933
Nitrophenol(4)	100027
Nitropropane(2)	79469
Nitroso-N-methylurea(N)	684935
Nitrosodimethylamine(N)	62759
Nitrosomorpholine(N)	59892
Parathion	56382
Pentachloronitrobenzene (Quintobenzene)	82688
Pentachlorophenol	87865
Phenol	108952
Chemical Name	CAS No.
Phenylenediamine(p)	106503
Phosgene	75445
Phosphine	7803512
Phosphorus	7723140
Phthalic anhydride	85449
Polychlorinated biphenyls (Arochlors)	1336363
Polycylic Organic Matter'	—
Propane sultone(l,3)	1120714
Propiolactone(beta)	57578
Propionaldehyde	123386
Propoxur (Baygon)	114261
Propylene dichloride
(1,2- Dichloropropane)	78875
Propylene oxide	75569
Propylenimine(l,2) (2-Methyl aziridine)	75558
Quinoline	91225
Quinone (1,4-Cyclohexadienedione)	106514
Radionuclides (including radon)1	—
Selenium Compounds	—
Styrene	100425
Styrene oxide	96093
Tetrachlorodibenzo-p-dioxin(2,3,7,8)	1746016
Tetrachloroethane(l, 1,2,2)	79345
Tetrachloroethylene (Perchloroethylene)	127184
Titanium tetrachloride	7550450
Toluene	108883
Toluene diamine(2,4)
(2,4-Diaminotoluene)	95807
Toluene diisocyanate(2,4)	584849
Toluidine(o)	95534
Toxaphene (Chlorinated camphene)	8001352
Trichlorobenzene(l,2,4)	120821
Trichloroethane(l,l,2)	79005
Trichloroethylene	79016
Trichlorophenol(2,4,5)	95954
Trichlorophenol(2,4,6)	88062
Triethylamine	121448
Trifluralin	1582098
Trimethylpentane(2,2,4)	540841
Vinyl acetate	108054
Vinyl bromide	593602
Vinyl chloride	75014
Vinylidene chloride
(1,1-Dichloroethylene)	75354
Xylene(m)	108383
Xylene(o)	95475
Xylene(p)	106423
Xylenes (mixed)	1330207
' Includes glass microfibers, glass wool fibers, rock wool fibers, and slag wool fibers, each characterized as "respirable" (fiber diameter
less than 3.5 micrometers) and possessing an aspect ratio (fiber length divided by fiber diameter) greater than 3.
1 A type of atom which spontaneously undergoes radioactive decay.
r' Includes organic compounds with more than one benzene ring, and which have a boiling point greater than or equal to 100°C.
6

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Hazardous Ait Pollutants (continued)
Section 112(j) becomes effec-
tive if EPA fails to promulgate
technology-based standards on
schedule. In this case, major
sources must submit permit ap-
plications within 18 months of
the missed deadline. The permit-
ting authority must then issue a
permit that contains emission
limits determined on a case-by-
case basis to be equivalent to the
standards that would have applied
had they been promulgated on
time. If a technology-based stan-
dard is subsequently issued, the
permit must be revised to reflect
this standard.
EPA to Issue Source
Category Emission Standards
The EPA will begin the two-
step process of promulgating emis-
sion standards for each listed
category or subcategory of major
sources and area sources with the
development of technology-based
standards. The emission standards
are to be developed according to a
prescribed schedule. Forty-one
source categories will be regulated
within 2 years after enactment
(refer back to Figure 2). In estab-
lishing the standards, EPA may
distinguish among classes, types,
and sizes of sources. The emission
standards may specify a numerical
emission limit; material or process
changes; other modifications such
as reuse or recycling; enclosure;
measures to collect, capture or
treat process, storage, stack or
fugitive emissions; design equip-
ment, work practice or operational
requirements; or any combination
of these. Emission standards are
effective upon promulgation and
must be reviewed and revised (as
necessary) at least every 8 years.
The second step will be an evalua-
tion of the remaining risks and the
development of a health- based
standard, if necessary (see page 8).
Technology Forms Basis for
Air Toxic Standards
For new sources, the emissions
reduction achieved by the technolo-
gy-based standards cannot be less
than the emission control achieved
in practice by the best controlled
similar source (as determined by
EPA). For existing sources, the
standards may be less stringent
than for new sources in the same
source category, but may not be
less stringent than the following
levels:
• For categories and subcate-
gories with more than 30
sources, the average emission
limit achieved by the best per-
forming 12 percent of the ex-
isting sources (for which EPA
has information). Sources that
have controlled their emissions
to a level considered to be the
lowest achievable emission rate
(LAER) within 18 months prior
to proposal or 30 months prior
to promulgation of an emissions
standard are not included when
the top 12 percent are evaluated.
• For categories and subcatego-
ries with less than 30 sources,
the average emissions limit
achieved by the best performing
five sources (for which EPA has
or could reasonably obtain emis-
sions information).
For area sources, EPA may
promulgate standards that reflect
generally available control techno-
logy or management practices.
Compliance Extension Granted for
Early Reductions
Existing sources may be
granted a 6-year extension of the
typical 3-year compliance deadline
for the technology-based standards
if they can demonstrate an early
reduction of 90 percent or more of
hazardous air pollutant emissions
(95 percent in the case of hazard-
ous air pollutants that are par-
ticulates). An existing source will
be issued a permit by States with
approved operating permit pro-
grams that allows the source to
meet an alternative emissions limit
reflecting the 90 (95) percent
reduction, provided the reduction
was achieved prior to proposal of
the technology-based standard.
An existing source that
achieves the reduction after pro-
posal of the emissions standard,
but before January 1, 1994, may
also be issued a compliance exten-
sion if the source makes an en-
forceable commitment to achieve
the reduction before the standard
is proposed.
The early reductions must be
based on actual and verifiable em-
issions in a base year no earlier
than 1987. Sources that are grant-
ed an extension under this provi-
sion must undergo review for a
health-based emission limit at the
same time as other sources in the
source category.
The EPA is currently prepar-
ing guidelines for the specific pro-
cedures that sources must follow in
order to be granted a compliance
extension for early reductions.
Emission Standards Also Address
Residual Risk
Within 6 years after enact-
ment, EPA (after consultation with
the Surgeon General and oppor-
tunity for public comment) must
submit a report to Congress on:
• methods of calculating the risks
to public health that remain
7

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Source Category Emission Standards (continued)
after the technology-based stan-
dards are applied;
•	the significance of the remain-
ing risk and the available
methods and costs of reducing
risk;
•	the actual health effects with
respect to persons living in the
vicinity of sources, available
health studies, and risks from
background concentrations;
•	uncertainties in risk assessment
methodology or other assess-
ment techniques, and any nega-
tive health or environmental
consequences to the community
resulting from efforts to reduce
such risk; and
• recommendations for legislation
regarding residual risk.
If Congress does not act on
EPA's recommendations submitted
with the report on risk, EPA must
promulgate health-based standards
to protect public health with an
ample margin of safety. Such stan-
dards will be promulgated, when
necessary, to protect against any
residual public health and en-
vironmental risks, within 8 years
of promulgation of the technology-
based standards. Promulgation of
health-based standards would be
mandatory when one or more
sources in a category emitting a
human carcinogen exceeds a max-
imum individual risk of cancer of
one in one million.
Title V Permits Designed to
Improve Compliance
The purpose of the operating
permits program under Title V of
the Clean Air Act Amendments of
1990 is to ensure compliance with
all applicable requirements of the
Clean Air Act and to enhance
EPA's ability to enforce the Act.
The EPA must issue permit pro-
gram regulations within 1 year
after enactment that the State will
use to develop their programs. The
EPA will then review each State's
proposed program and oversee the
State's efforts to implement their
program once approved. Where a
State fails to implement its own
program, EPA will enforce a
Federal permit program. Air pollu-
tion sources subject to the pro-
gram's requirements must obtain
an operating permit.
The new program clarifies and
makes more enforceable a facility's
pollution control requirements.
Currently, a facility's pollution con-
trol obligations may be scattered
throughout numerous hard-to-find
provisions of Federal and State
regulations, and, in many cases,
the facility is not required under
the applicable State Implementa-
tion Plan to submit periodic com-
pliance reports to EPA or the
States. The new permit program
will ensure that all of a facility's
obligations will be contained in one
permit document. Furthermore,
the facility will file periodic reports
identifying the extent to which it
has complied with those obliga-
tions. Both of these requirements
will greatly enhance the ability of
Federal and State agencies to
evaluate their air quality situations.
The new program will also
provide a ready vehicle for States
to assume administration, subject
to Federal oversight, of significant
parts of the air toxics program
under Title III and the acid rain
program under Title IV. Further-
more, through the permit fee pro-
vision, the States will have the
resources to administer air pollu-
tion control programs.
Under the new law, EPA must
issue program regulations within 1
year of enactment. Within 3 years
of enactment, each State must sub-
mit a permit program meeting
these regulatory requirements to
EPA. EPA has 1 year to accept or
reject the State's program. For
States that do not submit or en-
force a permit program, EPA must
levy sanctions.
All facilities subject to the per-
mit requirements must submit a
complete permit application within
1 year of the effective date of the
State permit program. This require-
ment is also applicable to Title III
sources subject to permit require-
ments, even if emission standards
applicable to that type of source
have not yet been issued. The
State permitting authority must
determine whether or not to ap-
prove an application within 18
months of the date it receives the
application. Each permit issued to
a facility will be for a fixed term of
up to 5 years. The new law estab-
lishes a permit fee whereby the
State collects a fee from the per-
mitted facility to cover reasonable
direct and indirect costs of the per-
mitting program.
The EPA has 45 days to
review each permit and to object to
permits that violate the Clean Air
Act. If EPA fails to object to a per-
mit that violates the Act or the
State's Implementation Plan, any
person may petition EPA to object
within 60 days following EPA's
45-day review period, and EPA
must grant or deny the permit
within 60 days. Judicial review of
EPA's decision on a citizen's peti-
tion can occur in the Federal Court
of Appeals.
8

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Title III Expands Accident Prevention Program
.	board to inves
The EPA's chemical accident
prevention program is based on
the premise that, while industry-
has the primary responsibility for
preventing and mitigating chemical
accidents, many other groups have
a role to play. Workers, trade asso-
ciations, professional organizations,
public interest groups, and govern-
ment at all levels can help facilities
identify hazards and find safer
ways to operate. Many steps that
owners and operators of facilities
can take to improve safety can also
make their businesses more effi-
cient and profitable.
Additional efforts to prevent
chemical accidents build on work
begun under the Emergency Plan-
ning and Community Right-to-Know
Act of 1986, also known as Title
Hi of the Superfund Amendments
and Reauthorization Act (SARA)-
This legislation established an in-
frastructure at the State and local
level for chemical emergency plan-
ning. As a part of this, facilities
were required to supply informa-
tion on chemicals present in the
community, and the public and in-
dustry were encouraged to meet to
discuss chemical hazards. The
1990 Clean Air Act Amendments
(the Act), which recognize the
broad nature of existing chemical
accident prevention activities, will
require additional information on
the way businesses manage chem-
ical risks and encourage facilities
to improve their safety practices.
The Act makes it clear that facili-
ties have the primary responsibili-
ty for ensuring safe operations. A
general duty clause requires owners
and operators of fixed facilities to
i entify hazards, to design and
maintain a safe facility, and to min-
imize the consequences of acciden-
tal releases. The provisions for the
chemical accident prevention pro-
gram are summarized below.
Chemical Accident Prevention
Regulations and Guidance
The EPA is to adopt "reason-
able regulations and appropriate
guidance" on chemical accident
prevention. These regulations
must include a risk management
plan. The details of the plan will
be decided as EPA develops the
regulations, but the Act requires
that the plans include a hazard
assessment, a prevention program,
and an emergency response pro-
gram. EPA may develop other
regulations to address the preven-
tion, detection, and monitoring of
accidental releases. The Act also
requires EPA to develop guidance
to help facilities comply with the
provisions.
A list of at least 100 chemicals,
with reporting thresholds, will be
developed within 24 months after
enactment. Facilities that store more
than the threshold quantity of a
listed substance will be covered by
the regulations. The list of chemicals
will be drawn from, though not
limited to, the list of extremely haz-
ardous substances under SARA
Title III Section 302. EPA is to
publish a final list by November
1992,	and final regulations on risk
management plans by November
1993.	Facilities will have to comply
with the regulations 3 years after
they are final. After that time, the
Act makes it unlawful for an owner
or operator to operate a facility in
violation of the regulations.
The risk management plans
that facilities develop are to be re-
gistered with EPA and States (in a
manner to be determined) and will
be submitted to States and local
emergency planners. The plans
will be available to the public. The
information contained in these
plans will complement the infor-
mation already provided to State
and local emergency planning com
mittees, as well as to the public
under SARA Title III. States may
impose more stringent require-
ments under State law.
Chemical Safety and Hazard
Investigation Board
The Act establishes a five-
member, Presidentially-appointed
board to investigate chemical
releases from fixed facilities that
result in death, serious injury, or
substantial property damage. (The
National Transportation Safety
Board continues to have jurisdic-
tion over transportation accidents
involving chemicals.) The purpose
of the board is to determine the
cause or probable cause of ac-
cidents and to report on them to
the public. The board may also
conduct research and studies
related to chemical accident
prevention and may make recom-
mendations to Federal, State, and
local authorities on ways to reduce
the likelihood or consequences of
accidental releases.
Research Provisions
The accidental release section
authorizes EPA to conduct research
on a number of issues. For exam-
ple, the bill calls for EPA to con-
duct a study of potential effects of
hydrofluoric acid and its uses, and
make recommendations for the re-
duction of its hazards. EPA is also
authorized to establish a research
program on hazard assessments
and conduct research on non-regu-
latory strategies for preventing,
detecting, and monitoring acciden-
tal releases. At a Federal testing
facility, gases that have the great-
est potential risk to human health
as the result of accidental releases
are to be tested to help evaluate
and improve models used in plan-
ning and evacuation.
The Act requires the President
to conduct a review of the release
prevention, mitigation, and re-
sponse authorities of various
Federal agencies and report to
Congress in 2 years. The purpose
of the review is to clarify and co-
ordinate responsibilities and to
identify any deficiencies that may
exist. Besides the provisions to be
addressed by industry and EPA,
the Act also requires the Occupa-
tional Safety and Health Ad-
ministration (OSHA) to adopt a
standard covering chemical process

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Accident Prevention
(continued)
safety in the workplace. A list of
highly hazardous chemicals will
define the scope of this standard.
These chemicals may be drawn
from the SARA Section 302 list of
extremely hazardous substances
and a number of other sources.
The safety standard will include
requirements for safety informa-
tion on chemicals and processes, a
workplace hazard assessment,
periodic audits, standard operating
Air Act Amendments. Many of the
details about how the Act's provi-
The EPA's ongoing program to
reduce the number and severity of
chemical accidents will be bolstered
by these provisions of the Clean
procedures, training, maintenance
systems, pre-startup safety reviews,
emergency response, and accident
investigations. OSHA is to pro-
mulgate these rules by November
15, 1991.
Agency (OS-120), 401 M Street,
S.W., Washington, D.C. 20460.
paredness and Prevention Office,
U.S. Environmental Protection
sions will be implemented will not
be known until the process of de-
veloping regulations and guidance
is completed. The public is encour-
aged to participate in that process.
For further information, contact
the Chemical Emergency Pre-
The NATICH Newsletter is published six times a year by the National Air Toxics Information Clearinghouse.
The Newsletter is prepared by Radian Corporation under EPA Contract Number 68-D8-0065, Work Assign-
ment 3-1. The EPA Project Officer is Martha Keating, EPA Office of Air Quality Planning and Standards,
Research Triangle Park, North Carolina 27711, Telephone: (919)541-5346. The Radian Project Director is Susan
Buchanan, P. 0. Box 13000, Research Triangle Park, North Carolina 27709, (919)541-9100.
The Newsletter is distributed free of charge. To report address changes, write Meredith Haley, Radian Cor-
poration, P. O. Box 13000, Research Triangle Park, North Carolina 27709.
The views expressed in the NATICH Newsletter do not necessarily reflect the views and policies of the
Environmental Protection Agency. Mention of trade names or commercial products does not constitute any
endorsement or recommendation for use by EPA.
Printed on recycled paper

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