[Federal Register Volume 63, Number 69 (Friday, April 10, 1998)]
[Notices]
[Pages 17838-17855]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 98-9557]


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ENVIRONMENTAL PROTECTION AGENCY

[FRL-5994-8; Docket No. A-97-05]


Source Category Listing for Section 112(d)(2) Rulemaking Pursuant 
to Section 112(c)(6) Requirements

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice.

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SUMMARY: This action provides a list of source categories for 
regulation under section 112(d) of the Clean Air Act (Act). A draft 
listing of this action was posted in the Federal Register on June 20, 
1997 (62 FR 33625) and public comment was taken on that draft. A 
document summarizing comments and responses is available on the 
Internet site (www.epa.gov/ttn/uatw/112c6fac.html) and in the project 
docket. This action is being taken pursuant to section 112(c)(6) of the 
Act, as amended in 1990, and a consent decree entered in Sierra Club v. 
Browner, Civ. No. 95-1747 (D.D.C. 1995) (consolidated with Sierra Club 
v. Browner, Civ. No. 96-436 (D.D.C. 1996)). Draft and final lists were 
required under the amended consent decree to be completed and made 
available by EPA by June 11, 1997 and April 3, 1998, respectively.
    This listing, under section 112(c)(6) is to identify source 
categories for which additional standards under section 112(d)(2) or 
(d)(4) can be developed, but by itself does not automatically result in 
regulation or control of emissions from sources within these source 
categories. Based on this list, EPA will perform further analyses on 
emissions and control methods for the listed source categories. The 
regulatory development analysis will determine any ultimate regulatory 
requirements.

DATES: Draft and final lists were required under the amended consent 
decree to be completed and made available by EPA by June 11, 1997 and 
April 3, 1998 respectively.

ADDRESSES: A docket containing information relating to the EPA's 
development of this notice (Docket No. A-97-05) is available for public 
inspection and copying between 8 a.m. and 5:30 p.m., Monday through 
Friday except for Federal holidays, in the Air and Radiation Docket and 
Information Center (MC-6102), Room M-1500, U.S. Environmental 
Protection Agency, 401 M Street, SW, Washington, DC 20460; telephone 
(202) 260-7548.

FOR FURTHER INFORMATION CONTACT: Laurel Driver, Office of Air Quality 
Planning and Standards (MD-15), U.S.

[[Page 17839]]

Environmental Protection Agency, Research Triangle Park, North Carolina 
27711, telephone number (919) 541-2859, electronic mail address: 
[email protected].

SUPPLEMENTARY INFORMATION:
    Docket. The docket is an organized and complete file of all the 
information submitted to or otherwise considered by the Agency in the 
development of this list of categories for sources for section 
112(c)(6). The principal purpose of this docket is to allow interested 
parties to identify and locate documents that serve as a record of the 
process engaged in by the Agency to publish today's notice. The docket 
is available for public inspection at the EPA's Air and Radiation 
Docket and Information Center, which is listed in the addresses section 
of this notice.
    The information in this notice is organized as follows:

I. Introduction
    A. Statutory Requirements
    B. Schedule
II. Background
    A. Overview of Regulatory Authority
    B. General Procedure
III. Changes Made From Draft Listing
    A. Response to Comments
    1. Comments on Emissions Inventories
    2. Comments on EPA Policy
    B. Other Significant Changes
IV. Listing Determination Process
    A. Sources Excluded from Section 112(c)(6) Analysis
    1. Exclusions Identified in Draft Listing Notices
    2. Cigarette Smoke
    3. Utility Emissions
    4. Consumer Products
    5. Refueling Emissions at Gasoline Dispensing Facilities
    B. Defining ``Subject to Standards''
    1. Section 112(d)(2)
    2. Section 112(d)(4)
    3. Section 129
    C. Regulatory Coverage for Section 112(c)(6) Pollutants
V. Sources Categories that Require Listing as a Result of the 
Section 112(c)(6) Analysis
VI. Regulatory Requirements
    A. General
    B. Executive Order 12866 and Office of Management and Budget 
(OMB) Review
Table 1. Summary of 1990 Emission Inventory Data for Section 
112(c)(6) Pollutants (TONS/YRS)
Table 2. 1990 Anthropogenic Stationary Source Category Percentage 
Contributions and Associated Regulations
Table 3. Cross-Reference Between the Section 112(c)(6) Inventory of 
Sources and Applicable Regulations
Figure 1. Percentage Contributions Of Total Emissions--Included from 
Regulatory Analysis

I. Introduction

A. Statutory Requirements

    Section 112(c)(6) of the Act prescribes the following program for 
seven specific pollutants:

    With respect to alkylated lead compounds, polycyclic organic 
matter, hexachlorobenzene, mercury, polychlorinated biphenyls, 
2,3,7,8-tetrachlorodibenzofurans and 2,3,7,8-tetrachlorodibenzo-p-
dioxin, the Administrator shall, not later than 5 years after 
November 15, 1990, list categories and subcategories of sources 
assuring that sources accounting for not less than 90 per centum of 
the aggregate emissions of each such pollutant are subject to 
standards under subsection (d)(2) or (d)(4) of this section. Such 
standards shall be promulgated not later than 10 years after 
November 15, 1990. This paragraph shall not be construed to require 
the Administrator to promulgate standards for such pollutants 
emitted by electric utility steam generating units.

B. Schedule

    The EPA has entered into a consent decree with the Sierra Club 
Legal Defense Fund, Inc., in response to Sierra Club v. Browner, Civ. 
No. 95-1747 (D.D.C. 1995) (consolidated with Sierra Club v. Browner, 
Civ. No. 96-436 (D.D.C. 1996)). These actions concern performance of 
certain duties under Act sections 112(c)(3), (c)(6), (k), and 202(l). 
The consent decree, as amended, required, among other actions, that EPA 
complete a draft of the list described in section 112(c)(6) no later 
than June 11, 1997, and make a final list available no later than April 
3, 1998.

II. Background

A. Overview of Regulatory Authority

    Section 112 of the Act, as amended in 1990, contains the EPA's 
authorities for reducing emissions of hazardous air pollutants (HAP). 
Section 112(b)(1) contains an initial list of 189 HAP (revised to 
contain 188 HAP, 61 FR 30816, June 18, 1996). Section 112(c)(1) 
requires the Administrator to publish a list of all categories and 
subcategories of major sources and area sources of the air pollutants 
listed in or pursuant to section 112(b). Section 112(d) requires the 
Administrator to promulgate regulations establishing emission standards 
for each category or subcategory of major sources and area sources of 
HAP listed in section 112(c). Section 112(d)(2) specifies that emission 
standards promulgated under the section shall require the maximum 
degree of reductions in emissions of the HAP subject to section 112 
that are deemed achievable, i.e., the maximum achievable control 
technology (MACT). These regulations are often termed ``technology-
based'' standards because they are based on the degree of emissions 
control achievable through the application of technologies that the 
best performing sources in the particular source category are using. 
These technologies may include equipment or process design, chemical 
substitution, collection and treatment of emissions, work practices, 
and other measures.
    Section 112(d)(4) provides for consideration of health thresholds 
with an ample margin of safety. Certain other sections of section 112 
require EPA, in addition to technology-based standards, to evaluate 
risk to public health and the environment in determining whether other 
control measures are appropriate.
    Section 112(c)(6) names seven specific HAP that EPA must evaluate 
to assure that certain sources of these HAP have been identified and 
subjected to standards.

B. General Procedure

    In order to determine the sources of the seven HAP named in section 
112(c)(6), EPA developed a 1990 base-year emissions inventory of known 
sources to the atmosphere of each HAP (refer to the inventory document 
or the draft listing notice for a discussion of the base year 
selection). This inventory of all sources (whether or not the emissions 
are considered further in the section 112(c)(6) analysis) is summarized 
in Table 1.
    Once these sources of the total emissions were identified, only the 
stationary, anthropogenic source categories which fall within the scope 
of section 112 (or the equivalent section 129) were evaluated to 
determine action necessary under section 112(c)(6). (More discussion of 
source categories excluded from the section 112(c)(6) analysis follows 
in section IV.A.)
    Once the list of source categories was revised, the remaining pool 
of source categories was evaluated to determine whether 90 percent of 
those emissions are subject to standards. A summary of source 
categories included in the section 112(c)(6) analysis and their percent 
contributions are contained in Table 2. The majority of the source 
categories were found to be already subject to either section 112(d)(2) 
or section 129 standards (see section IV.B.3. regarding section 
112(c)(6) credit for section 129 standards) or listed for such 
regulation. The EPA reviewed the coverage of source categories to 
determine whether additional source categories are needed to assure 
that not less than 90 per centum of the aggregate emissions of each 
pollutant are subject to standards.

[[Page 17840]]

    The EPA published a draft listing of source categories accounting 
for the section 112(c)(6) HAP emissions and the source categories 
needed to meet the 90 percent requirement in the Federal Register on 
June 20, 1997 (62 FR 33625). The notice and the base year inventory 
document contain detailed information about emissions inventory 
development methodology and its review process. In response to comments 
on this draft and to new data that have been collected in conjunction 
with concurrent EPA projects, EPA has made significant changes to the 
inventory since the draft package. These changes are discussed in 
section III.
    Additionally, EPA has prepared Table 3, which provides a cross-
reference between the inventory prepared for section 112(c)(6) and the 
list of categories under section 112(c)(1) for section 112(d) 
standards. This table does not change any of the category definitions 
or listing actions, but is provided solely for the convenience of the 
public.
    While this assessment uses the best available emissions data 
currently available for 1990, EPA cannot, at this time, assure that 
this calculation of the 90 percent will remain constant for two 
reasons: (1) EPA has not completed the process of developing section 
112(d)(2) standards and, therefore, cannot guarantee the outcome of 
those standards; and (2) the emissions inventory estimates, and the 
estimates for emissions allocations to major and area sources, for any 
given source category are likely to change as more source category 
specific information is collected in the process of developing 
standards. Congress required this listing activity to be undertaken 
before completion of many regulatory analyses, and EPA believes this 
notice represents the best estimate of emissions of section 112(c)(6) 
pollutants and their regulatory coverage possible at this time.

III. Changes Made From Draft Listing

    The EPA posted the draft section 112(c)(6) listing in the Federal 
Register on June 20, 1997. The EPA posted the notice, the 1990 base 
year inventory, and an explanatory fact sheet on the EPA's Internet web 
site (www.epa.gov/ttn/uatw/112c6fac.html). The EPA also notified trade 
associations, environmental groups, regulatory agencies, and other 
parties who had expressed interest or supplied data to alert them of 
the availability of the section 112(c)(6) package. The EPA accepted 
comments on the draft listing and base year inventory over a 30-day 
comment period. A comment summary document is posted on the web site 
and is available in the docket. A discussion of substantive changes in 
the listing action resulting from comments and from data collected 
through related EPA projects follows.

A. Response to Comments

    A total of 27 separate comment letters were received regarding the 
June 20, 1997 Federal Register package. Several of the comments 
pertained to the accompanying 1990 base year emissions inventory 
supporting the section 112(c)(6) listing process. Within the 27 
individual comment letters, approximately 50 separate comment issues 
were identified. These comments pertained to both technical and policy 
issues. The EPA has prepared a document, ``Summary of Public Comments 
on the section 112(c)(6) Draft Listing Notice,'' that summarizes all 
technical and policy comments received on the July 20, 1997 section 
112(c)(6) Federal Register package. Similarly focused comments have 
been aggregated and summarized in the document, along with the EPA 
responses to the comments. The responses indicate how a technical or 
policy issue is being addressed in the final Federal Register listing 
notice for section 112(c)(6) or in the final supporting emissions 
inventory. The comment summary/response document can be found in the 
docket for the section 112(c)(6) project and on the EPA air toxics web 
page (http://www.epa.gov/ttn/uatw/112c6fac.html).
1. Comments on Emissions Inventories
    The majority of the technical comments regarded items relating to 
some aspect of an emissions inventory estimate for a source category. 
Most of these comments questioned the use of a particular emission rate 
or factor or the use of an activity rate for a source category. The EPA 
evaluated the technical data submitted and revised several emissions 
estimates based on these comments. Any changes made in emissions 
estimates based on these comments are reflected in the base-year 
inventory document, Tables 1 and 2, and Figure 1 at the end of this 
notice.
2. Comments on EPA Policy
    The policy-oriented comments predominantly addressed what 
regulatory programs could be counted as fulfilling the section 
112(c)(6) ``subject to standards'' requirement, what portion of total 
source category emissions can be credited as being ``subject to 
standards'' for the section 112(c)(6) 90 percent requirement, what 
source categories should be included in the 90 percent ``subject to 
standards'' analysis, and what are appropriate definitions for the 
polycyclic organic matter (POM) and dioxin/furan pollutants. Comments 
also stated that EPA should do more to communicate the emissions 
reductions that industries have done for section 112(c)(6) pollutants 
since 1990 and that current emissions are significantly below 1990 
levels; and that the aviation gasoline distribution category should not 
be included in the listing since there is currently no viable 
substitute for leaded aviation fuels and recent discussions between the 
industry and the Federal Aviation Administration (FAA) indicated no 
regulatory programs would be pursued for leaded aviation fuels. The 
most substantive of these comments and EPA responses are summarized 
below:
    Comment: Several commenters were concerned that EPA consider 
aviation safety and performance standards when considering ``Gasoline 
Distribution (Aviation)'' as a source category under section 112(c)(6).
    Response: The EPA will consider such safety standards. Section 
112(d)(2) standards require using the technology and practices of the 
best performers within an industry to set the standard for the rest of 
the industry.
    Comment: One commenter stated that credits for stage II gasoline 
distribution regulations under sections 182(b)(3) and 202(a)(6) are 
only appropriate if they are protective of human health.
    Response: Section 112(c)(6) does not require EPA to determine an 
emissions level ``protective of human health.'' In any case, EPA is not 
including stage II gasoline distribution emissions in the section 
112(c)(6) analysis for the reasons described in IV.A.5. below.
    Comment: One commenter stated that in its section 112(c)(6) 
proposal, EPA improperly and illegally counts emissions as ``subject to 
standards'' that are not yet subject to standards, that are subject to 
standards other than MACT, or that are only partially subject to 
standards. Only emissions that are subject to standards under section 
112(d)(2) and 112 (d)(4) can be counted toward the 90 percent goal 
contained in section 112(c)(6).
    Response: The EPA made changes in the final listing action in 
response to this comment. First, HAP emissions from electric utility 
steam generating units were removed from the analysis. Section 
112(c)(6) provides that, ``This paragraph shall not be construed to 
require the Administrator to promulgate standards for such pollutants 
emitted by electric utility steam generating units.'' Furthermore, 
section 112(n)(1)(A) requires EPA to perform a study of the public 
health hazards posed by HAP

[[Page 17841]]

emissions from electric utility steam generating units and to regulate 
those sources if ``appropriate and necessary after considering the 
results of the study.'' The EPA believes that those provisions give the 
Agency discretion to exclude utility emissions from listing and 
regulation under section 112(c)(6). Congress enacted section 
112(n)(1)(A) to establish the mechanism for determining whether 
regulation of utility HAP emissions under section 112 was ``appropriate 
and necessary'' and section 112(c)(6) specifically acknowledges that 
function. The EPA believes that the language used in section 112(c)(6) 
reflects Congress' determination that the mechanism established by 
section 112(c)(6) is not appropriate for the regulation of utility HAP 
emissions. Therefore, EPA has removed utility HAP emissions from this 
analysis.
    Second, EPA has added information on whether each Industrial 
Combustion Coordinated Rulemaking (ICCR) category will be subject to 
section 112 or section 129 standards. (EPA has found section 112(d)(2) 
and 129 standards to be substantively the same, as discussed in the 
draft listing Federal Register notice.)
    Comment: One commenter stated that in determining source categories 
subject to standards and counting emissions toward the section 
112(c)(6) 90 percent goal, EPA has assumed that 100 percent of all 
emissions for each MACT category are major source emissions. Therefore, 
all emissions from a category for which there is a MACT are covered, 
even if there are actually area sources that may not be subject to the 
MACT.
    Response: The EPA has made a significant effort to characterize 
emissions from each of the section 112(c)(6) emissions source 
categories. These area and major source emissions allocations are 
detailed in the draft and final emissions inventory documents which 
have been made available with the draft and final listing notices. 
Information on these area/major allocations comes primarily from work 
conducted in association with MACT standard development or derived from 
definitions of facilities. The EPA finds the MACT data to be of 
generally higher quality than the facility definition data, which are 
expected to improve as MACT standards are developed for these 
categories.
    For the section 112(c)(6) analysis, in cases where a regulation for 
a given source category has been promulgated, the percent of emissions 
subject to the standard has been credited. For example, in the source 
category gasoline distribution stage I, only 10 percent of the 
emissions are from major sources subject to the standard and have been 
counted toward the 90 percent goal. For source categories with 
regulations that have not yet been promulgated, EPA will subject each 
significant area source category to standards as directed by section 
112(c)(6). When the regulations for each of those categories are 
developed, EPA will analyze the data specific to those sources and 
determine, under section 112(d), in what manner requirements will be 
established. Some area categories may be negligible contributors to the 
90 percent goal, and as such pose unwarranted burdens for subjecting to 
standards. These trivial source categories will be removed from the 
listing as they are evaluated since they will not contribute 
significantly to the 90 percent goal.
    Comment: One commenter stated that EPA's treatment of emissions in 
the proposed notice implies that the Agency believes it has identified 
all source categories of section 112(c)(6) pollutant emissions and, 
therefore, has accounted for 100 percent of emissions. The EPA should 
document the basis for this assumption. If this cannot be documented, 
the EPA should not assume that 90 percent of the emissions reported in 
the proposal notice equal 90 percent of the total amount of section 
112(c)(6) pollutant emissions.
    Response: The EPA has documented all sources for which emissions 
data could be found and has indicated all source categories for which 
emissions are suspected but no data to estimate emissions could be 
found. The methodology for developing the emissions inventory estimates 
is described in detail within the base year inventory document. Any 
supported additional data that have been submitted by reviewers have 
also been incorporated. The EPA believes it has sufficiently supported 
its emissions estimates and has been as inclusive as possible of all 
relevant data. The EPA further notes that the commenter has supplied no 
information which would contradict or refute EPA's belief that all 
source categories have been identified.
    Comment: One commenter stated that the only MACT standards that are 
countable toward the section 112(c)(6) 90 percent requirement are those 
standards that specifically establish requirements for section 
112(c)(6) HAP (i.e., EPA cannot claim credit for a MACT for benzene as 
subjecting the source to standards for dioxin), and that a section 
112(d)(2) standard for which EPA claims credit for section 112(c)(6) 
purposes must specifically regulate the emissions of the section 
112(c)(6) pollutant.
    Similarly, another comment asserted that Congress intended for EPA 
to reduce section 112(c)(6) HAP emissions by even more than they would 
be reduced by any other section 112(d)(2) standard means, and that this 
is why they imposed especially stringent emissions targets. The 
commenter asserted that this interpretation is supported by the 
legislative history of the Act.
    Another commenter stated it is not appropriate for EPA to have 
claimed section 112(c)(6) credit for section 112(d)(2) applicability 
and MACT emission reductions when the subject standard does not reduce 
nor require any reductions for the section 112(c)(6) HAP. If EPA 
evaluates this situation for a category and determines that no real 
reductions are possible under a given MACT, the commenter stated that 
they should report this finding to Congress. The commenter further 
argued that claiming these credits for standards that do nothing in 
terms of real emission reductions is not appropriate.
    Response: The EPA responds that section 112(c)(6) and 112(d) does 
not require a specific quantitative reduction in emissions for any 
particular HAP. Section 112(c)(6) calls for EPA to assure that certain 
sources ``are subject to standards under subsection 112 (d)(2) or 
(d)(4).'' The relevant sources are selected on the basis of whether 
they emit the seven listed HAP. Section 112(c)(6) does not, however, 
require that EPA achieve a specific amount of reductions of those seven 
listed HAP. Today's action satisfies section 112(c)(6) by assuring that 
source categories accounting for 90 percent of the emissions are 
subject to standards under section 112 (d)(2) or (d)(4).
    Section 112 (d)(2) and (d)(4), in turn, define the mechanism for 
setting standards. That mechanism establishes a minimum level of 
performance. Like section 112(c)(6), it does not mandate any particular 
percentage reduction in emissions of any particular HAP. However, 
standards under section 112(d)(2) will be reevaluated for ``residual 
risk'' under section 112(f). Under this provision, EPA can impose 
additional standards, if necessary, ``to provide an ample margin of 
safety to protect public health * * * or to prevent, taking into 
consideration costs, energy, safety, and other relevant factors, an 
adverse environmental effect.''
    Comment: Some commenters emphasized the point that in order for 
area sources within the source categories listed in the section 
112(c)(6) inventory to be regulated or for the area sources within the 
applicable MACT to

[[Page 17842]]

be regulated, EPA must first make a determination that the sources pose 
an adverse threat to human health or the environment pursuant to 
section 112(c)(3) requirements. The EPA cannot impose MACT or any other 
control requirements on area sources without making such a 
determination first.
    Similarly, a commenter did not believe that section 112(c)(6) 
mandates the control of area sources within a listed source category. 
The commenter went on to say that the proposal notice was unclear on 
whether area sources were presumed to be affected by the credited MACT, 
but that whether they were or were not, area sources within the 
Portland cement industry are not presumed to be regulated by the 
industry MACT standards as a result of their inclusion in the section 
112(c)(6) source list.
    Response: The EPA responds that section 112(c)(6) requires that 
sources accounting for at least 90 percent of emissions of the 
specified pollutants be subject to section 112(d)(2) standards or 
section 112(d)(4). Unlike section 112(c)(3), this requirement does not 
call for, nor does EPA believe it permits, a finding of health or 
environmental threat from area sources to determine if such sources 
need to be included to meet the 90 percent requirement. However, EPA 
will determine whether specific regulation of the area source component 
of a source category is appropriate, or necessary to meet the 90 
percent goal, based on more source category-specific data collected as 
part of the regulatory process.
    Comment: Another commenter challenged that EPA should not, in its 
listing for section 112(c)(6), split the Portland cement category into 
two categories, one for sources combusting hazardous waste fuel and one 
for sources not combusting hazardous waste fuel.
    Response: Section 112(c) generally authorizes EPA to establish 
source categories or subcategories for regulation as appropriate. The 
EPA chose to split hazardous and non-hazardous waste-burning source 
categories in order to reflect the distinctions made in MACT standards 
currently under development within EPA's Office of Air Quality Planning 
and Standards (OAQPS) and the Office of Solid Waste (OSW). The OAQPS 
rule, which is not yet proposed, applies to cement kilns that do not 
burn hazardous waste and to other HAP-emitting sources at a cement 
plant, regardless of whether or not the cement kiln burns hazardous 
waste. Cement kilns that burn hazardous waste will be covered by the 
hazardous waste combustor rule which was proposed April 19, 1996 (61 FR 
17358). Approximately 40 out of the 210 cement kilns in the U.S. burn 
hazardous waste as a fuel. The sources burning hazardous and 
nonhazardous fuel are being regulated under separate actions due to 
their different emissions characteristics, different air pollution 
controls, and separate classification by virtue of section 3004 (q) of 
the Resource Conservation and Recovery Act.
    Comment: Several commenters responded to EPA's request for input on 
the most appropriate definition of POM for use in this action. While 
many comments provided information that will improve the emissions 
estimates for the various source categories emitting these compounds, 
EPA did not receive information which would favor the selection of one 
surrogate approach over another as a basis to make listing 
determinations for all categories associated with emissions of section 
112(c)(6) HAP.
    Response: POM is defined in section 112(b) to ``[i]nclude[  ] 
organic compounds with more than one benzene ring, and which have a 
boiling point greater than or equal to 100 deg.C.'' The complex mixture 
of POM consists of literally thousands of organic compounds, and no 
standardized method exists at this time to measure these emissions. 
There are, however, some valid surrogates for POM that provide 
sufficient emissions inventory data for this analysis: (1) Extractable 
organic matter (EOM), which is composed of the solvent-extractable 
fraction of particulate matter, (2) the sum of the seven polynuclear 
aromatic hydrocarbon compounds that are probable carcinogens (7-PAH), 
and (3) the sum of the sixteen PAHs measured in EPA test method 610 
(16-PAH). (For a more complete discussion of POM surrogates, refer to 
the section 112(c)(6) emissions inventory document.) The EPA and others 
are engaged in further efforts to better characterize the constituents 
of POM that are most significant in evaluating health and environmental 
effects.
    Rather than circumventing that effort by selecting one surrogate, 
EPA collected and used data for all three approaches in the section 
112(c)(6) assessment. As a result, the Agency did not discard any of 
the possible surrogates for POM; the section 112(c)(6) listing reflects 
an analysis that satisfies the 90 percent requirement using each one of 
the three approaches.
    Comment: One commenter argued that use of toxic equivalency (TEQ) 
is inappropriate as a surrogate for 2,3,7,8-TCDD. While 2,3,7,8-TCDD is 
a single compound, TEQs sum emissions of various dioxins and furans 
based on toxic equivalency (see inventory document for more discussion 
of this issue).
    Response: As explained in the draft listing Federal Register 
notice, EPA chose to use the TEQ surrogate for evaluating 2,3,7,8-TCDD 
because data on 2,3,7,8-TCDD emissions were not available for analysis. 
Both EPA's MACT program and the ongoing Office of Research and 
Development's Dioxin Reassessment Study predominantly report emission 
estimates on a 2,3,7,8-TCDD TEQ basis. Therefore, to maximize the 
number of source categories for which national estimates could be 
determined on a common basis and best carry out the objectives of 
section 112(c)(6), EPA chose to use the TEQ method for inventorying 
2,3,7,8-TCDD and 2,3,7,8-TCDF as specified under section 112(c)(6).

B. Other Significant Changes

    In addition to data supplied via the comments on the draft listing 
package, EPA also incorporated significant changes to the section 
112(c)(6) base year emissions inventory based on information gathered 
through another EPA program. The urban area source program (section 
112(c)(3) and 112(k)) requires an inventory information collection 
effort which includes some of the section 112(c)(6) pollutants. This 
emissions inventory effort has been under way concurrently with the 
development of the section 112(c)(6) analysis, with public comment on 
that inventory ending in November 1997. The data collected from that 
program have been incorporated into the section 112(c)(6) inventory and 
are reflected in the base year inventory document and the tables and 
figures included in this notice.

IV. Listing Determination Process

    As described before, early in the analysis, source categories that 
are not considered appropriate for section 112 regulation (i.e., 
nonstationary, nonanthropogenic sources) were identified and excluded 
from further evaluation for regulation under section 112(c)(6). From 
this revised inventory list, source categories currently considered to 
be subject to section 112(d)(2) and (d)(4) standards were identified, 
along with source categories that are subject to section 129 standards 
which substantively meet equivalent requirements.
    The emission contributions from these source categories were 
tallied for each pollutant to determine whether the sources of 90 
percent of emissions are

[[Page 17843]]

already subject to standards or listed for such standards, as required 
by section 112(c)(6). Those pollutants that do not have 90 percent 
coverage require listing of additional source categories under section 
112(c)(6) to attain the 90 percent level.

A. Sources Excluded From Section 112(c)(6) Analysis

    Certain sources of section 112(c)(6) pollutants, although included 
in the 1990 base year emissions inventory documentation, are not 
included in the analysis of source categories subject to section 
112(c)(6). For example, section 112 applies to stationary sources, 
therefore mobile source emissions were excluded.
1. Exclusions Identified in the Draft Listing Notice
    In addition to mobile source emissions, emissions from wild and 
prescribed fires, residential fuel combustion, and pesticide 
application were also excluded. The rationale for these exclusions was 
discussed in the draft listing notice. In this notice, EPA has also 
excluded cigarette smoke, utility boilers emissions, consumer products 
emissions, and refueling emissions at gasoline dispensing facilities. A 
discussion of each of these excluded source categories follows.
2. Cigarette Smoke
    Although the section 112(c)(6) emissions inventory includes 
estimates of emissions from cigarette smoke, EPA does not deem this to 
be a source category intended for regulation as a stationary source 
under section 112. Section 112(a)(3) defines ``stationary source'' by 
referring to section 111(a), which provides that a stationary source is 
``any building, structure, facility, or installation which emits or may 
emit any air pollutant.'' Cigarette smoke does not fall within that 
definition because it is not emitted by a fixed edifice such as a 
``building, structure, facility, or installation.'' Therefore, this 
source category was excluded from the inventory of emission sources 
that are potentially subject to standards under section 112(c)(6).
3. Utility Emissions
    The language in section 112(c)(6) states that the ``paragraph shall 
not be construed to require the Administrator to promulgate standards 
for such pollutants emitted by electric utility steam generating 
units.'' The EPA believes this statement gives the Agency discretion 
about whether EPA is required to include utility emissions in the 
section 112(c)(6) analysis. In section 112(n)(1)(A), EPA is required to 
assess the HAP emissions from electric utility steam generating units 
and to regulate if ``appropriate and necessary.'' More information 
about the utility study can be obtained from the Clean Air Act 
Amendments bulletin board of the EPA's electronic Technology Transfer 
Network (TTN) under ``Recently Signed Rules,'' (http://
ttnwww.rtpnc.epa.gov).
    The EPA believes that section 112(n)(1)(A) is the appropriate 
authority for evaluating utility emissions and determining the 
necessity of regulation for this source category. In the draft section 
112(c)(6) listing notice, EPA proposed to credit the emissions of 
section 112(c)(6) pollutants from utilities as subject to standards 
through section 112(n)(1)(A). This interpretation was challenged by 
commenters. Therefore, as discussed above, EPA has determined it to be 
more appropriate to exclude utility emissions from those considered for 
the section 112(c)(6) analysis and to address them under section 
112(n)(1)(A).
4. Consumer Products
    Consumer products, such as surface coatings, metal cleaning 
solvents, personal care products, and household cleaning products 
contribute significantly to emissions of POM, as defined in the 16-
polyaromatic hydrocarbon (PAH) definition. These emissions are composed 
primarily of naphthalene. These emissions come primarily from the use, 
consumption, storage, disposal, destruction, or decomposition of such 
products, and as such, do not fit the definition of ``stationary 
source'' provided in sections 111(a)(3) and 112(a)(3). These emissions 
were not quantified in the draft section 112(c)(6) emissions inventory 
or draft listing Federal Register notice. The emissions estimates are a 
result of inventory-development work on a concurrent EPA project 
related to emissions in urban areas (section 112(c)(3) and 112(k)). The 
EPA believes it is important that the emissions from consumer products 
be identified and the public informed of their potential significance. 
Although these emissions account for a significant fraction of total 
16-PAH emissions, EPA does not consider them appropriate for regulation 
under section 112 and believes instead that they should be addressed 
through other means.
    Regulations for consumer products have been proposed for control of 
volatile organic compounds (VOC) pursuant to section 183(e) of the Act 
and are expected to result in significant reductions in VOC. 
Naphthalene is a VOC. This provision requires EPA to account for 
sources of 80 percent of total VOC emissions from consumer products in 
ozone nonattainment areas and subject these sources to best available 
controls.
    The proposed rule would affect approximately 220 consumer product 
manufacturers and importers nationwide. Many of these companies are 
already taking steps to reformulate their products to emit less VOC. 
The EPA worked closely with these companies in developing the proposed 
rule.
    More information on the proposed rule for consumer products can be 
downloaded from the Clean Air Act Amendments bulletin board (under 
``Recently Signed Rules'') of EPA's electronic Technology Transfer 
Network (TTN), or by calling (919) 541-5742.
5. Refueling Emissions at Gasoline Dispensing Facilities
    Refueling emissions at gasoline dispensing facilities (gas 
stations) occur when vapors are displaced from a motor vehicle's fuel 
tank during the refueling process. Refueling accounts for 374 tons of 
the 16-PAH emissions (naphthalene) in the 1990 base year inventory. The 
EPA recognizes the importance of controlling these emissions but 
believes that they are not appropriately the subject of regulation 
under section 112.
    Promulgation of a section 112 standard to control emissions from 
refueling would frustrate Congress' intent to regulate those emissions 
through sections 182(b)(3) and 202(a)(6). Rather than treating 
refueling emissions in the same manner that they treated other HAP 
emissions, Congress elected to provide a special, comprehensive program 
specifically tailored to refueling.
    The first step of the program, in section 182(b)(3), sets forth a 
short-term solution. It requires the installation of controls on fuel 
pumps to recover refueling emissions (``stage II'') and includes a 
schedule which calls for prompt compliance with its requirements. Stage 
II was initially required for gasoline dispensing facilities which sell 
more than 10,000 gallons of gasoline per month (or 50,000 gallons per 
month, in the case of independent small business marketers) in all 
areas that are ``moderate'' or worse nonattainment areas for ozone. In 
addition, section 184(b)(2) of the Act requires all areas in the ozone 
transport region (OTR) to adopt stage II controls or control measures 
capable of achieving comparable emissions reductions.
    The second step, in section 202(a)(6), mandates the use of vehicle-
based vapor

[[Page 17844]]

recovery systems in all new light-duty vehicles (``onboard''). The 
schedule provided in section 202(a)(6) allows for a lengthier 
compliance process that imposes onboard controls after the installation 
of Stage II. Upon promulgation of EPA's onboard regulations, the 
section 182(b)(3) Stage II requirements no longer applied to 
``moderate'' ozone nonattainment areas, although States were free to 
leave stage II controls in place. For instance, some States concluded 
that stage II was necessary for them to meet reasonable further 
progress or attainment and maintenance requirements under title I of 
the Act. Moreover, States are free under section 116 of the Act to 
apply Stage II requirements more stringently than is federally 
required. Once EPA determines by rule that those onboard controls are 
in widespread use throughout the motor vehicle fleet, the Stage II 
controls may be scaled back in ``serious'' or worse ozone nonattainment 
areas, while areas in the OTR will remain subject to the requirements 
of section 184(b)(2) to apply Stage II or comparable measures.
    Enactment of sections 182(b)(3) and 202(a)(6) was preceded by 
lengthy, detailed debate about the all aspects of Stage II and onboard 
systems (e.g., S. Rep. No. 231, 100th Cong., 1st Sess. 404-407 (1987)), 
including the safety of the systems (e.g., Environmental and Natural 
Resources Policy Division, Library of Congress, 103d Cong., 1st Sess., 
A Legislative History of the Clean Air Act Amendments of 1990, at 
10729-33 (Comm. Print 1993) (statement of Sen. Coats)), the 
relationship between the requirements (e.g., H.R. Rep. No. 490, 101st 
Cong., 2d Sess., pt. 1, at 303-304 (1990)), and the costs imposed by 
the controls (e.g., Legislative History, supra, at 4837, 4843 
(statement of Sen. Chafee)). Moreover, Congress recognized that the 
Stage II and onboard requirements of sections 182(b)(3) and 202(a)(6) 
would produce substantial toxics benefits:

    Both Stage II and onboard are designed to capture emissions from 
refueling of mobile sources. They capture emissions of benzene, a 
known carcinogen, and other toxic pollutants (S. Rep. No. 231, at 
23).
    Two other benefits attributable to Stage II systems are reduced 
human exposure to toxics compounds and increased safety (S. Rep. No. 
228, 101st Cong., 1st Sess. 40 (1989)).
    Onboard systems also reduce human exposure to toxic pollution 
(S. Rep. No. 228, at 94).

See also Legislative History, supra, at 5617-18 (statement of Sen. 
Baucus); S. Rep. 231, at 137, 460.
    Congress' intent to comprehensively address refueling emissions 
from gasoline dispensing stations through stage II and onboard 
requirements is clearly illustrated by the focused regulatory scheme 
provided in those provisions, by the prolonged and detailed debate on 
the issue, and by the recognition that sections 182(b)(3) and 202(a)(6) 
control toxics. Imposition of a section 112 standard upon that unique 
arrangement would frustrate Congress' intent to control emissions from 
refueling through the comprehensive regulatory structure anticipated by 
sections 182(b)(3) and 202(a)(6).
    To be sure, other types of emission sources are subject to 
regulation under more than one provision of the Act. For example, an 
industrial facility may have both section 110 State implementation plan 
requirements and section 112 air toxics standards. In those situations, 
sources become subject to multiple requirements because Congress 
constructed those parts of the Act to allow for overlapping coverage. 
Sections 110 and 112 are intended to apply broadly to a wide range of 
sources without excluding the application of other general 
requirements. In the case of evaporative losses from vehicle refueling, 
however, Congress required stage II and onboard as controls 
specifically focused on regulating the emissions from a single type of 
emission point after significant and lengthy discussion and after 
recognizing that those controls accomplish the goals of section 112. 
The unique structure and history of sections 182(b)(3) and 202(a)(6) 
indicate Congress' intent to strike a balance between burdens on 
gasoline station owners and refiners and to achieve a uniform, 
comprehensive regulatory approach to control of refueling emissions. By 
contrast, the remainder of the Act contemplates the application of 
multiple provisions to sources.
    Recognition of Congress' plan to control refueling emissions 
through stage II and onboard, rather than through MACT, does not affect 
the public health. As mentioned above, Congress understood that the 
emission reductions achieved by sections 182(b)(3) and 202(a)(6) will 
be comparable to those achieved by a standard under section 112. The 
onboard controls yield a 95 percent emissions reduction over 
uncontrolled levels. Due to fleet turnover, 90 percent of light duty 
vehicles are expected to be equipped with onboard controls by 2015. 
Once it is fully phased in, onboard will achieve that level of control 
for 97 percent of new vehicles and 94 percent of refueling emissions. 
That will lead to reductions of VOC and HAP emissions of 300,000 to 
400,000 tons per year. Imposition of a section 112 standard on 
refueling would not be likely to achieve greater reductions.
    More information about stage II and onboard can be obtained at 
EPA's Internet web site (http://www.epa.gov/OMSWWW/gopher/Regs/LD-hwy/
Onboard/orvrq&a.txt).

B. Defining ``Subject to Standards''

    The focus of the regulations under section 112(d) has been to 
initially develop standards for emissions of air toxics based on the 
MACT available for each industry source category emitting HAP. Section 
112(c)(6) specifically states that sources that account for 90 percent 
of emissions of section 112(c)(6) specific pollutants be subject to 
standards under section 112(d)(2) or 112(d)(4). It is important to 
recognize that in making sources ``subject to standards,'' the language 
of section 112(c)(6) does not specify either a particular degree of 
emissions control or a reduction in these specific pollutants' 
emissions to be achieved by such regulations. Rather, specific control 
requirements are set as referenced in section 112(d)(2) and (d)(4).
    In the next phase of section 112 programs (under section 112(f)), 
EPA will evaluate the necessity of further emissions reductions in 
order ``to provide an ample margin of safety to protect public health . 
. . or to prevent, taking into consideration costs, energy, safety, and 
other relevant factors, an adverse environmental effect.'' These latter 
determinations will rely on information required by the 1990 Amendments 
to the Act or gathered since they were passed. For example, the Dioxin 
Reassessment Study, the Great Waters Report to Congress, and the 
Mercury Report to Congress, represent extensive assessments of the 
health effects and the potential exposure of humans and the environment 
to the pollutants identified in section 112(c)(6). This information 
will be used in future decisions regarding the imposition of health-
based emission reductions.
1. Section 112(d)(2)
    Section 112(d)(2) standards are based on the maximum level of 
control, defined in section 112(d)(3) as the ``maximum degree of 
reduction in emissions that is deemed achievable'' (i.e., MACT), as 
determined by the best-performing 12 percent of sources within the 
source category for existing sources. Section 112(d)(2) provides for 
measures that (a) reduce the volume or eliminate emissions of HAP 
through process

[[Page 17845]]

changes, substitution of materials or modifications; (b) enclose 
systems or processes to eliminate HAP emissions; (c) collect, capture, 
or treat HAP when released from a process, stack, storage, or fugitive 
emissions point; (d) are design, equipment, work practice, or 
operational standards (including requirements for operator training or 
certification); or (e) are a combination of the above.
    Many source categories, which have been identified as ones that 
account for the emissions of the various section 112(c)(6) pollutants, 
have previously been listed for section 112(d)(2) regulation and appear 
on the source category list promulgated for section 112(c)(1) (57 FR 
31576, July 16, 1992; 61 FR 28197, June 4, 1996). These standards are 
at varying phases of completion, and, for many, analysis has not yet 
been initiated. In developing the basis for today's action, EPA relied 
on the best available information. However, as EPA recognizes, and many 
commenters have noted, many uncertainties remain concerning the 
accuracy of its identification of source categories and estimates of 
emissions. As the Agency proceeds to develop appropriate emission 
standards, it will necessarily develop improved source category-
specific information, which may affect the estimates of total 
emissions, the percentage of emissions subject to standards, allocation 
of emissions within a source category to major and area sources, and 
source categories for which standards need to be developed. As it 
proceeds to develop these standards and associated information, EPA 
intends to further evaluate this information against its obligation to 
assure that sources accounting for not less than 90 percent of 
emissions are subject to standards. In accordance with section 
112(c)(6), EPA is ultimately responsible for adopting regulations to 
meet the 90 percent requirement.
    In cases where regulatory development has proceeded to a point such 
that data are sufficient to estimate the portion of the emissions from 
a given source category that will be subject to the regulation, such an 
estimate was made. For instance, if a section 112(d)(2) standard will 
apply only to sources determined to be major as defined in section 
112(a), then only the fraction of the total source category emissions 
that are estimated from major sources would be counted as subject to 
standards. For example, the section 112(d)(2) standard for stage I 
gasoline distribution (40 CFR part 63, subpart R, promulgated December 
14, 1994) only regulates major sources, which account for 10 percent of 
emissions from that source category. As a result, the section 112(c)(6) 
analysis only credits 10 percent of the emissions (refer to Table 2).
2. Section 112(d)(4)
    Congress provided in section 112(d)(4) that EPA could, at its 
discretion, develop risk-based standards for HAP ``for which a health 
threshold has been established,'' provided that the standard achieves 
an ``ample margin of safety.'' The full text of the provision reads:

    With respect to pollutants for which a health threshold has been 
established, the Administrator may consider such threshold level, 
with an ample margin of safety, when establishing emission standards 
under this subsection.

    A determination that a threshold exists has not been made for 
alkylated lead, POM, hexachlorobenzene (HCB), polychlorinated biphenyls 
(PCB's), 2,3,7,8-TCDF, or 2,3,7,8-TCDD. Therefore, section 112(d)(4) 
authority has not been, and cannot yet be, used to regulate the 
emissions of any of these pollutants.
    The EPA has established a reference dose (RfD) for methyl mercury 
and a reference concentration (RfC) for inorganic mercury, but section 
112(d)(4) has not been used in regulating the emissions of these 
mercury compounds. Regulation based on these mercury thresholds is 
difficult because EPA lacks a method to link deposition or ambient 
concentrations to exposure concentrations for these pollutants. (A more 
detailed discussion of section 112(d)(4) appears in the draft listing 
Federal Register notice.)
3. Section 129
    Some source categories identified as contributors to the estimates 
of emissions of section 112(c)(6) pollutants are not currently listed 
for regulation under section 112(d)(2), but are subject to section 129 
standards.
    Because section 129 provides for a substantively equivalent level 
of control as section 112(d)(2) and because section 129(h)(2) prohibits 
subjecting solid waste incinerators to both section 129 and section 
112(d) standards, the Agency believes that it is appropriate to include 
section 129 as a regulatory instrument equivalent to section 112(d)(2). 
The EPA further believes that listing source categories for section 
112(c)(6) that are already covered under section 129 would lead to a 
redundant regulatory effort and would produce no additional 
environmental benefit. The EPA is, therefore, crediting the emissions 
of section 112(c)(6) pollutants from section 129 source categories as 
subject to standards under section 112(c)(6). A more complete 
discussion of section 129 standards and comparison to section 112(d)(2) 
standards is provided in the draft listing Federal Register notice.
    Some section 129 standards are being developed as part of the ICCR. 
The ICCR is based on the authority of sections 112 and 129. Each of the 
ICCR source categories will be subject to either section 112 or 129 
authority (as noted in Table 2) depending on the materials the source 
category burns (a conventional fuel or a waste product). This project 
was discussed in detail in the draft listing notice. Source categories 
previously identified in the draft notice as ICCR standards have been 
modified to identify whether they will be subject to section 112 or 
section 129 in conjunction with the ICCR. These identifications of 
section 112 and 129 standards may change as EPA determines whether 
combustion devices used at these sources burn ``fuel'' or ``waste.'' 
Additional information about the ICCR is available on the EPA TTN or at 
the ICCR Main Menu on the Internet (http://ttnwww.rtpnc.epa.gov). When 
accessing the World Wide Web site, select ``TTN BBS Web'' from the 
first menu, then select ``Gateway to Technical Areas'' from the second 
menu, and, finally, select ``ICCR-Industrial Combustion Coordinated 
Rulemaking'' from the third menu.

C. Regulatory Coverage for Section 112(c)(6) Pollutants

    Table 2 provides a summary of the source categories that emit 
section 112(c)(6) HAP and the percentage of emissions attributable to 
each category. Note that as described in section IV.A., only the 
sources that EPA believes are appropriate for regulation under section 
112 are included in this analysis. Table 1 shows the full emissions 
inventory.
    In Table 2, the percent contributions of source categories that are 
eligible for section 112(d) standards (and, therefore, included in the 
section 112(c)(6) analysis) are summed for each pollutant in order to 
identify those section 112(c)(6) pollutants that do not have at least 
90 percent of emissions subject to standards. Those section 112(c)(6) 
pollutants at or above the 90 percent level are: POM (as defined by 
EOM), 2,3,7,8-TCDD, mercury, PCB's, and HCB. These pollutants do not 
appear, at this time, to require the listing of any additional source 
categories for future rulemaking.
    Based on the 1990 baseline emissions inventory, the 90 percent 
subject to standards requirement is not met for the

[[Page 17846]]

following pollutants: POM (as defined by 7-PAH), POM (as defined by 16-
PAH), and alkylated lead. For these pollutants, additional source 
categories will have to be identified to attain the 90 percent level. 
These additional source categories are being listed under section 
112(c)(6) for section 112(d)(2) or (d)(4) standards development. As 
noted earlier, these listings, as presented now, are based on the best 
information that is currently available. Given the above mentioned 
uncertainties, however, EPA recognizes that the list may be subject to 
change. Hence, the EPA anticipates that it may, in the future, amend 
the list of source categories published in today's notice, in order to 
fulfill the requirement to subject sources accounting for 90 percent of 
the emissions of the section 112(c)(6) HAP to standards. For example, 
as EPA evaluates a particular source category, it may find that area 
sources contribute insignificantly to the emissions of POM and 
regulation would not be necessary to attain the 90 percent requirement. 
In such a situation, EPA may find it appropriate to take credit for 
regulation of the major sources only. As better estimates of emissions 
are developed during the MACT development process, EPA intends to 
evaluate this information against its obligation to assure that sources 
accounting for 90 percent of emissions are subject to standards. Any 
future evaluation of the 90 percent requirement would have to be based 
on 1990 emissions in order to maintain consistency.

V. Source Categories That Require Listing as a Result of the 
Section 112(c)(6) Analysis

    A review of the available data indicates that a substantial 
majority of source categories emitting section 112(c)(6) pollutants 
have already been listed for regulation under section 112(d)(2) or are 
subject to regulation under equivalent authorities. Based on EPA's 
current information, in order to meet the section 112(c)(6) requirement 
to assure that the sources of at least 90 percent of the aggregate 
emissions of each specific HAP are subject to standards, the following 
source categories require such listing: Open burning of scrap tires and 
gasoline distribution, leaded aviation fuel. The source category, wood 
treatment and preservation, had appeared in the draft listing Federal 
Register notice, but has been removed from consideration for this list. 
Comments were submitted that significantly reduced the emissions 
estimates for this source category, as well as changes that affected 
estimates of other source category emissions, resulting in a lower 
percent contribution from this source category and in its removal from 
this listing.
    This listing under section 112(c)(6) identifies source categories 
for which standards under section 112(d)(2) or (d)(4) will be 
developed, but by itself does not automatically result in regulation or 
control of emissions from sources within these source categories. The 
EPA will perform further analyses on emissions and control methods for 
the listed source categories. This regulatory development analysis will 
determine any ultimate regulatory requirements.
    A summary of the reasons for each of the above source category's 
inclusion follows.
--Open burning of scrap tires: Although data submitted in response to 
the draft listing package resulted in a significant reduction in the 
emissions estimate for this source category, it still accounts for a 
significant portion of POM emissions in the section 112(c)(6) analysis 
(14.3 percent defined as 7-PAH, and 3.4 percent defined as 16-PAH). 
Subjecting emissions from this source to standards will bring the 
percentage of 7-PAH emissions that are subject to standards up to the 
level of 99.3 percent, and 16-PAH emissions up to the level of 90.2 
percent.
    The EPA realizes that scrap tires are not routinely burned in the 
open as part of agricultural or industrial processes and that these 
sources are different from facilities designed for the incineration of 
scrap tires. There are numerous storage piles of scrap tires across the 
country created through legal and illegal practices. These storage 
piles are often set on fire by arson, accident, or natural causes 
(lightning). Some states and organizations have created rules and 
guidelines designed to reduce and eventually eliminate the fire threat 
posed by stockpiled tires. The EPA will consider these efforts in 
developing a section 112(d)(2) standard for this source category. These 
emissions involve inadvertent and incidental releases of emissions 
rather than discharges as a direct result of process operations; as 
such it is analogous to the incidental but significant release of 
emissions through process leaks or from solvent-laden cleaning rags. 
The EPA believes it can subject these sources to standards in a fashion 
similar to its approach to other sources from which significant 
emissions could result from unsafe or ineffective work management 
practices.
--Gasoline distribution, aviation fuel: This category, consists of 
evaporative losses from the transfer and storage of leaded aviation 
fuel, and aircraft refueling and associated spillage. Note that these 
emissions are associated with fuel containing alkylated lead, commonly 
referred to as aviation gas, and used primarily in general aviation 
aircraft. This is not the same as commercial jet fuel. This source 
category accounts for 81.3 percent of the 1990 base year inventory. 
However, since leaded gasoline has been banned for use in motor 
vehicles since the 1990 inventory estimate, this source category 
accounts for the only known remaining emissions of alkylated lead. Thus 
listing this source category will subject 100 percent of current 
alkylated lead emissions to standards.

VI. Regulatory Requirements

A. General

    Today's notice is not a rule; it is essentially a housekeeping or 
maintenance activity which does not impose regulatory requirements or 
costs on any sources, including small businesses. Therefore, the EPA 
has not prepared an economic impact analysis pursuant to section 317 of 
the Act, nor a regulatory flexibility analysis pursuant to the 
Regulatory Flexibility Act (Pub. L. 96-354, September 19, 1980), nor a 
budgetary impact statement pursuant to the Unfunded Mandates Act of 
1995. Also, this notice does not contain any information collection 
requirements and, therefore, is not subject to the Paperwork Reduction 
Act, 44 U.S.C. 3501 et seq.

B. Executive Order 12866 and Office of Management and Budget (OMB) 
Review

    Under Executive Order 12866 (58 FR 51735; October 4, 1993), the 
Agency must determine whether a regulatory action is ``significant'' 
and therefore subject to OMB review and the requirements of the 
Executive Order. The Order defines ``significant'' regulatory action as 
one that is likely to lead to a rule that may either: (1) Have an 
annual effect on this economy of $100 million or more, or adversely and 
materially affect a sector of the economy, productivity, competition, 
jobs, the environment, public health or safety, or State, local or 
tribal governments or communities; (2) create a serious inconsistency 
or otherwise interfere with an action taken or planned by another 
agency; (3) materially alter the budgetary impact of entitlements, 
grants, user fees, or loan programs or the rights and obligations of 
recipients thereof; or (4) raise novel legal or policy issues arising 
out of legal mandates, the President's priorities, or

[[Page 17847]]

the principles set forth in the Executive Order.
    Pursuant to the terms of Executive Order 12866, this is not a 
``significant regulatory action'' within the meaning of the Executive 
Order. This notice was submitted to OMB for review. Any written 
comments from OMB and written EPA responses are available in the 
docket.

C. Small Business Regulatory Enforcement Fairness Act of 1996

    Today's action is not a rule subject to notice-and-comment 
requirements and is thus not subject to the Small Business Regulatory 
Enforcement Fairness Act of 1996. In addition, as mentioned above, this 
notice merely lists categories of sources and does not impose any 
regulatory requirements. Consequently, this notice will not have any 
economic impact on small entities.

D. Submission to Congress and the Comptroller General

    The Congressional Review Act, 5 U.S.C. 801 et seq., as added by the 
Small Business Regulatory Enforcement Fairness Act of 1996, does not 
apply because this action is not a rule, as that term is defined in 5 
U.S.C. 804(3).

    Dated: April 3, 1998.
Richard D. Wilson,
Acting Assistant Administrator for Air and Radiation.

                              Table 1.--Summary of 1990 Emission Inventory Data for Section 112(C)(6) Pollutants (Tons/Yr)                              
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                          POM                                                                           
                     Source category                     ------------------------------------  2,3,7,8-     Mercury       PCB         HCB      Alkylated
                                                             7-PAH      16-PAH        EOM      TCDD TEQ                                          lead   
--------------------------------------------------------------------------------------------------------------------------------------------------------
Abrasive Grain (Media) Manufacturing....................  ..........    2.48e+01  ..........  ..........  ..........  ..........  ..........  ..........
Adhesives and Sealants (SICs combined)..................  ..........    4.18e+00  ..........  ..........  ..........  ..........  ..........  ..........
Aerospace Industry (Surface Coating)....................  ..........    1.64e+03  ..........  ..........    4.00e+00  ..........  ..........  ..........
Agricultural Chemicals..................................  ..........    9.03e+00  ..........  ..........  ..........  ..........  ..........  ..........
Asphalt Hot-Mix Production..............................    9.40e-02    4.37e+01  ..........  ..........  ..........  ..........  ..........  ..........
Asphalt Roofing Production..............................    1.68e+00    4.36e+01  ..........  ..........  ..........  ..........  ..........  ..........
Battery Production......................................  ..........  ..........  ..........  ..........    2.00e-02  ..........  ..........  ..........
Blast Furnace and Steel Mills...........................  ..........    4.99e+02  ..........  ..........    2.50e-01  ..........  ..........  ..........
Carbamate Insecticides Production.......................  ..........    4.08e+00  ..........  ..........  ..........  ..........  ..........  ..........
Carbon Black Production.................................    4.50e-01    4.33e+00  ..........  ..........    2.50e-01  ..........  ..........  ..........
Carbon Reactivation Furnaces............................  ..........  ..........  ..........    1.25e-07  ..........  ..........  ..........  ..........
Chemical Manufacturing: Cyclic Crude and Intermediate                                                                                                   
 Production.............................................  ..........    1.04e+02  ..........  ..........  ..........  ..........  ..........  ..........
Chemical Preparations (SICs combined)...................  ..........    6.79e+00  ..........  ..........  ..........  ..........  ..........  ..........
Chloralkali Production..................................  ..........    4.52e+00  ..........  ..........    9.80e+00  ..........  ..........  ..........
Chlorinated Solvents Production.........................  ..........  ..........  ..........  ..........  ..........  ..........    5.81e-01  ..........
Chromium Plating: Chromic Anodizing.....................  ..........  ..........  ..........  ..........    2.50e-03  ..........  ..........  ..........
Cigarette Smoke.........................................    5.20e-01    3.45e+00  ..........  ..........  ..........  ..........  ..........  ..........
Clay Refractories.......................................  ..........    5.00e-01  ..........  ..........  ..........  ..........  ..........  ..........
Cleaning Products (SICs combined).......................  ..........    1.38e+00  ..........  ..........  ..........  ..........  ..........  ..........
Coke Ovens: By-Product Recovery Plants..................  ..........    7.78e+01  ..........  ..........  ..........  ..........  ..........  ..........
Coke Ovens: Charging, Topside & Door Leaks..............    7.18e+01    5.39e+02    6.79e+02  ..........  ..........  ..........  ..........  ..........
Coke Ovens: Pushing, Quenching & Battery Stacks.........    3.01e+01    5.17e+02  ..........  ..........  ..........  ..........  ..........  ..........
Commercial Coal Combustion..............................    3.60e+01    1.73e+02    2.74e+03  ..........    7.77e-01  ..........  ..........  ..........
Commercial Natural Gas Combustion.......................  ..........    3.00e-02    1.92e+03  ..........  ..........  ..........  ..........  ..........
Commercial Oil Combustion...............................    3.16e-02    5.33e+01    1.32e+03  ..........    2.00e-01  ..........  ..........  ..........
Commercial Printing, Gravure............................  ..........    2.89e+01  ..........  ..........  ..........  ..........  ..........  ..........
Commercial Printing, Letterpress and Screen.............  ..........    1.04e+01  ..........  ..........  ..........  ..........  ..........  ..........
Commercial Wood/Wood Residue Combustion.................    1.01e+00    3.58e+01    1.95e+03  ..........    8.00e-03  ..........  ..........  ..........
Consumer Products Usage.................................  ..........    5.73e+03  ..........  ..........  ..........  ..........  ..........  ..........
Crematories.............................................    1.42e-08    8.33e-06  ..........    9.15e-12    3.77e-04  ..........  ..........  ..........
Custom Compound Purchased Resins Manufacture............  ..........  ..........  ..........  ..........    1.28e-01  ..........  ..........  ..........
Dental Preparation and Use..............................  ..........  ..........  ..........    8.00e-01  ..........  ..........  ..........  ..........
Drum and Barrel Reclamation.............................    1.27e-06    8.19e-05  ..........    2.51e-07  ..........  ..........  ..........  ..........
Electronic and Other Electric Equipment Manufacturing                                                                                                   
 (SICs combined)........................................  ..........    3.05e+01  ..........  ..........    8.83e-01  ..........  ..........  ..........
Fabricated Metal Products...............................  ..........    1.43e+02  ..........  ..........  ..........  ..........  ..........  ..........
Fabricated Rubber Products..............................  ..........    1.48e+02  ..........  ..........  ..........  ..........  ..........  ..........
Ferroalloy Manufacture..................................    2.60e-01    5.60e-01  ..........  ..........  ..........  ..........  ..........  ..........
Fiber Cans, Drums, and Similar Products.................  ..........    5.06e+00  ..........  ..........  ..........  ..........  ..........  ..........
Fluorescent Lamp Recycling..............................  ..........  ..........  ..........  ..........  ..........    6.00e-03  ..........  ..........
Food Products (SICs combined)...........................  ..........    3.54e+00  ..........  ..........  ..........  ..........  ..........  ..........
Gasoline Distribution (Aviation)........................  ..........  ..........  ..........  ..........  ..........  ..........  ..........    3.75e-01
Gasoline Distribution (Stage I).........................  ..........    3.55e+02  ..........  ..........  ..........  ..........  ..........    8.64e-02
Gasoline Distribution (Stage II)........................  ..........    3.74e+02  ..........  ..........  ..........  ..........  ..........    1.92e-02
General Laboratory Activities...........................  ..........  ..........  ..........  ..........    8.00e-01  ..........  ..........  ..........
Geothermal Power........................................  ..........  ..........  ..........  ..........    1.30e+00  ..........  ..........  ..........
Gum and Wood Chemical...................................  ..........    5.00e-01  ..........  ..........  ..........  ..........  ..........  ..........
Hazardous Waste Incineration............................    2.09e-02    1.75e-01  ..........    3.30e-05    3.20e+00    2.78e-02  ..........  ..........
Industrial Coal Combustion..............................    3.09e+00    1.57e+02    2.41e+03  ..........    2.20e+01  ..........  ..........  ..........
Industrial Gases Manufacturing..........................  ..........    9.43e+00  ..........  ..........  ..........  ..........  ..........  ..........
Industrial Inorganic Chemicals Manufacturing............  ..........    1.57e+01  ..........  ..........    1.00e+00  ..........  ..........  ..........
Industrial Machinery and Electrical Equipment (SICs                                                                                                     
 combined)..............................................  ..........    2.77e+00  ..........  ..........  ..........  ..........  ..........  ..........
Industrial Natural Gas Combustion.......................  ..........    2.00e-02    9.28e+02  ..........  ..........  ..........  ..........  ..........
Industrial Oil Combustion...............................    3.07e-02    5.09e+01    4.94e+02  ..........    5.80e+00    4.97e-05  ..........  ..........
Industrial Organic Chemicals Manufacturing..............  ..........    2.27e+02  ..........  ..........    2.00e-02  ..........  ..........  ..........
Industrial Stationary IC Engines--Diesel................    8.93e-02    5.02e+00    1.93e+03  ..........  ..........  ..........  ..........  ..........
Industrial Stationary IC Engines--Natural Gas...........    1.03e+00    4.76e+01  ..........  ..........    4.47e+00  ..........  ..........  ..........
Industrial Turbines--Diesel Fired.......................  ..........    1.55e-02    1.73e+03  ..........    9.00e-02  ..........  ..........  ..........
Industrial Turbines: Natural Gas Fired..................  ..........    1.38e+01    7.39e+02  ..........    1.61e+00  ..........  ..........  ..........
Industrial Waste Oil Combustion.........................    1.34e+00    7.82e+00  ..........  ..........  ..........  ..........  ..........  ..........
Industrial Wood/Wood Residue Combustion.................    1.21e+00    6.88e+01    4.42e+04    5.07e-05    2.03e-01  ..........  ..........  ..........

[[Page 17848]]

                                                                                                                                                        
Inorganic Pigments Manufacturing........................  ..........  ..........  ..........  ..........    5.00e-03  ..........  ..........  ..........
Instrument Manufacturing................................  ..........  ..........  ..........  ..........    5.00e-01  ..........  ..........  ..........
Iron and Steel Foundries................................    6.00e-02    1.90e-01  ..........    1.15e-05  ..........  ..........  ..........  ..........
Lamp Breakage...........................................  ..........  ..........  ..........  ..........    1.50e+00  ..........  ..........  ..........
Landfill (Gas) Flares...................................    1.05e-03    4.45e-01  ..........  ..........  ..........  ..........  ..........  ..........
Lightweight Aggegate Kilns..............................  ..........  ..........  ..........    3.60e-06    3.10e-01  ..........  ..........  ..........
Lime Manufacturing......................................  ..........  ..........  ..........  ..........    7.00e-01  ..........  ..........  ..........
Lubricating Oils and Grease.............................  ..........    6.00e-02  ..........  ..........  ..........  ..........  ..........  ..........
Medical Waste Incineration..............................  ..........    8.00e-01    1.50e+01    6.60e-04    5.00e+01    4.03e-02  ..........  ..........
Metal Household Furniture...............................  ..........    2.50e-03  ..........  ..........  ..........  ..........  ..........  ..........
Miscellaneous Manufacturing.............................  ..........    6.58e+00  ..........  ..........  ..........  ..........  ..........  ..........
Miscellaneous Plastics Products.........................  ..........    5.76e+00  ..........  ..........  ..........  ..........  ..........  ..........
Municipal Waste Combustion..............................  ..........    9.67e-02    1.82e+02    3.65e-03    5.50e+01    8.01e-02  ..........  ..........
Naphthalene--Miscellaneous Uses.........................  ..........    1.25e+00  ..........  ..........  ..........  ..........  ..........  ..........
Naphthalene Production..................................  ..........    6.46e+01  ..........  ..........  ..........  ..........  ..........  ..........
Naphthalene Sulfonates Production.......................  ..........    6.53e+00  ..........  ..........  ..........  ..........  ..........  ..........
Non-Road Vehicles and Equipment (NRVE)--Aircraft........    9.00e-02    4.79e+00  ..........  ..........  ..........  ..........  ..........  ..........
Nonmetallic Mineral Products............................  ..........    2.50e-03  ..........  ..........    5.00e-03  ..........  ..........  ..........
NRVE--Other.............................................    2.40e+01    4.70e+01    2.51e+04  ..........  ..........  ..........  ..........    1.66e-01
Office Furniture, Except Wood Manufacturing.............  ..........    6.45e+00  ..........  ..........  ..........  ..........  ..........  ..........
On-Road Vehicles........................................    3.44e+01    7.59e+01    5.62e+04    9.50e-05  ..........  ..........  ..........  ..........
Open Burning of Scrap Tires.............................    5.25e+01    2.94e+02  ..........  ..........  ..........  ..........  ..........  ..........
Other Biological Incineration...........................  ..........  ..........    1.05e+00    1.60e-04  ..........    2.49e-03  ..........  ..........
Other Miscellaneous (SICs combined).....................  ..........    1.45e+00  ..........  ..........    2.50e-01  ..........  ..........  ..........
Other Secondary Nonferrous Metals Recovery..............  ..........  ..........  ..........  ..........    2.50e-01  ..........  ..........  ..........
Other Structural Clay Products..........................  ..........    5.60e-01  ..........  ..........    1.10e-01  ..........  ..........  ..........
Paints and Allied Products..............................  ..........    3.07e+01  ..........  ..........    7.50e-03  ..........  ..........  ..........
Paper Coated and Laminated, Packaging...................  ..........    5.54e+01  ..........  ..........  ..........  ..........  ..........  ..........
Partitions and Fixtures.................................  ..........    4.35e+00  ..........  ..........  ..........  ..........  ..........  ..........
Pesticides Application..................................  ..........  ..........  ..........  ..........  ..........  ..........    1.46e-01  ..........
Pesticides Manufacture..................................  ..........  ..........  ..........  ..........  ..........  ..........    4.58e-01  ..........
Petroleum Refining: All Processes.......................    1.64e+01    1.10e+03  ..........  ..........    4.35e-02  ..........  ..........  ..........
Pharmaceutical Preparations and Manufacturing (SICs                                                                                                     
 combined)..............................................  ..........    7.66e-01  ..........  ..........  ..........  ..........  ..........  ..........
Phthalic Anhydride Production...........................  ..........    2.62e+01  ..........  ..........  ..........  ..........  ..........  ..........
Plastic Foam Products Manufacturing.....................  ..........    1.10e+02  ..........  ..........  ..........  ..........  ..........  ..........
Plastics Material and Resins Manufacturing..............  ..........    8.55e+00  ..........  ..........    4.00e-03  ..........  ..........  ..........
Porcelain Electrical Supplies...........................  ..........    2.08e+00  ..........  ..........  ..........  ..........  ..........  ..........
Portland Cement Manufacture: Hazardous Waste Kilns......    2.08e+00    1.26e+01  ..........    4.75e-04    2.75e+00  ..........  ..........  ..........
Portland Cement Manufacture: Non-Hazardous Waste Kilns..    2.60e+00    4.79e+01  ..........    4.29e-05    4.13e+00  ..........  ..........  ..........
Primary Aluminum Production.............................    1.41e+02    6.62e+02    3.88e+03  ..........  ..........  ..........  ..........  ..........
Primary Copper Production...............................  ..........  ..........  ..........  ..........    7.40e-01  ..........  ..........  ..........
Primary Lead Smelting...................................  ..........  ..........  ..........  ..........    1.30e+00  ..........  ..........  ..........
Primary Metal Products Manufacturing (SICs combined)....  ..........    2.69e+01  ..........  ..........  ..........  ..........  ..........  ..........
Public Building and Related Furniture...................    1.16e+01  ..........  ..........  ..........  ..........  ..........  ..........  ..........
Pulp and Paper--Kraft Recovery Furnaces.................    3.74e+00    6.49e+02    3.42e-07    1.90e+00  ..........  ..........  ..........  ..........
Pulp and Paper--Lime Kilns..............................    2.50e-01    1.83e+02  ..........  ..........  ..........  ..........  ..........  ..........
Pulp and Paper--Sulfite Recovery Furnaces...............    6.17e+00  ..........  ..........  ..........  ..........  ..........  ..........  ..........
Residential Coal Combustion.............................    3.19e+01    1.03e+02    2.34e-04    6.00e-01  ..........  ..........  ..........  ..........
Residential Natural Gas Combustion......................    8.02e-02    5.10e+00    4.14e+03  ..........  ..........  ..........  ..........  ..........
Residential Oil Combustion..............................    1.70e+00    2.10e+01    1.47e+03    3.78e-06    3.00e+00  ..........  ..........  ..........
Residential Wood Combustion.............................    5.72e+02    8.86e+03    2.36e+05    3.38e-05  ..........  ..........  ..........  ..........
Scrap or Waste Tire Combustion..........................    2.17e-05    5.18e-03    3.00e-07    1.04e-03  ..........  ..........  ..........  ..........
Secondary Aluminum Smelting.............................    1.90e-04  ..........  ..........  ..........  ..........  ..........  ..........  ..........
Secondary Copper Smelting...............................  ..........  ..........    6.80e-06  ..........  ..........  ..........  ..........  ..........
Secondary Lead Smelting.................................    1.90e-02    6.99e+01    4.25e-06    1.13e-02  ..........  ..........  ..........  ..........
Secondary Mercury Production............................  ..........  ..........    7.52e-01  ..........  ..........  ..........  ..........            
Sewage Sludge Incineration..............................    8.67e-03    1.64e+00    2.65e-05    1.80e+00    5.12e-03                                    
Ship Building and Repair (Surface Coating)..............    1.44e+01  ..........  ..........  ..........  ..........  ..........  ..........  ..........
Surface Active Agents Manufacturing.....................    7.41e+00  ..........  ..........  ..........  ..........  ..........  ..........  ..........
Textiles (SICs Combined)................................    9.68e+00  ..........  ..........  ..........  ..........  ..........  ..........  ..........
Tire Manufacturing......................................    7.00e+00  ..........  ..........  ..........  ..........  ..........    4.35e-01  ..........
Transportation Equipment Manufacturing (SICs combined)..    5.16e+01  ..........  ..........  ..........  ..........  ..........  ..........  ..........
Utility Coal Combustion.................................    2.10e-01    7.55e+00    3.86e+04    1.10e-04    5.10e+01    6.80e-01  ..........  ..........
Utility Natural Gas Combustion..........................    6.90e-01    1.00e+03    1.60e-03  ..........  ..........  ..........  ..........  ..........
Utility Oil Combustion..................................    5.00e-02    5.70e-01    5.31e+02    7.00e-06    2.50e-01    1.49e-04  ..........  ..........
Utility Turbines--Diesel Fired..........................    3.00e-02  ..........  ..........  ..........  ..........  ..........  ..........  ..........
Wildfires and Prescribed Burning........................    9.64e+02    2.54e+03    9.50e-05  ..........  ..........  ..........  ..........  ..........
Wood Household Furniture Manufacturing..................    1.13e+01  ..........  ..........  ..........  ..........  ..........                        
Wood Treatment/Wood Preserving..........................    9.04e+01     3.80e-0  ..........  ..........  ..........  ..........  ..........  ..........
                                                         -----------------------------------------------------------------------------------------------
      Total Emissions (tons/yr).........................     1995.80    26476.54   428035.05      0.0059      234.59        0.16        2.30        0.65
--------------------------------------------------------------------------------------------------------------------------------------------------------


[[Page 17849]]


                       Table 2.--1990 Anthropogenic Stationary Source Category Percentage Contributions and Associated Regulations                      
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                 POM                                                                                                    
        Source category         ------------------------------------  2,3,7,8-     Mercury       PCB         HCB      Alkylated   Applicable  regulation
                                    7-PAH      16-PAH        EOM      TCDD TEQ                                          lead                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
  Source Categories Subject to                                                                                                                          
           Regulation                                                                                                                                   
(8)Percent contribution                                                                                                                                 
                                ------------------------------------------------------------------------------------------------                        
Aerospace Industry (Surface                      18.838  ..........  ..........       2.226  ..........  ..........  ..........  Sec. 112(d)(2).        
 Coating) {Subject to                                                                                                                                   
 regulations is 100% of total                                                                                                                           
 values}.                                                                                                                                               
Asphalt Hot-Mix Production.....       0.026       0.502  ..........  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
Asphalt Roofing Production.....       0.458       0.501  ..........  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
Blast Furnace and Steel Mills..  ..........       5.732  ..........  ..........       0.139  ..........  ..........  ..........  Sec. 112(d)(2).        
Chemical Manufacturing: Cyclic   ..........       1.195  ..........  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
 Crude and Intermediate                                                                                                                                 
 Production.                                                                                                                                            
Chloralkali Production.........  ..........       0.052  ..........  ..........       5.453  ..........  ..........  ..........  Sec. 112(d)(2).        
Chlorinated Solvents Production  ..........  ..........  ..........  ..........  ..........  ..........      39.417  ..........  Sec. 112(d)(2).        
Chromium Plating: Chromic        ..........  ..........  ..........  ..........       0.001  ..........  ..........  ..........  Sec. 112(d)(2).        
 Anodizing {Subject to                                                                                                                                  
 Regulation is 100% of total                                                                                                                            
 values}.                                                                                                                                               
Coke Ovens: By-Product Recovery  ..........       0.894  ..........  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
 Plants.                                                                                                                                                
Coke Ovens: Charging, Topside &      19.570       6.191       1.043  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
 Door Leaks.                                                                                                                                            
Coke Ovens: Pushing, Quenching        8.204       5.934  ..........  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
 & Battery Stacks.                                                                                                                                      
Commercial Printing, Gravure     ..........       0.330  ..........  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
 {Subject to Regulation is                                                                                                                              
 99.35% of total values}.                                                                                                                               
Fabricated Metal Products......  ..........       1.643  ..........  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
Gasoline Distribution (Stage I)  ..........       0.408  ..........  ..........  ..........  ..........  ..........       1.873  Sec. 112(d)(2).        
 {Subject to Regulation is 10%                                                                                                                          
 of total values}.                                                                                                                                      
Hazardous Waste Incineration...       0.006       0.002  ..........       0.616       1.781      17.721  ..........  ..........  Sec. 112(d)(2).        
Industrial Organic Chemicals     ..........       2.579  ..........  ..........       0.011  ..........  ..........  ..........  Sec. 112(d)(2).        
 Manufacturing {Subject to                                                                                                                              
 Regulation is 98.91% of total                                                                                                                          
 values}.                                                                                                                                               
Lightweight Aggregate Kilns....  ..........  ..........  ..........       0.067       0.173  ..........  ..........  ..........  Sec. 112(d)(2).        
Naphthalene Production.........  ..........       0.742  ..........  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
Paints and Allied Products.....  ..........       0.353  ..........  ..........       0.004  ..........  ..........  ..........  Sec. 112(d)(2).        
Paper Coated and Laminated,      ..........       0.636  ..........  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
 Packaging.                                                                                                                                             
Pesticides Manufacture.........  ..........  ..........  ..........  ..........  ..........  ..........      31.072  ..........  Sec. 112(d)(2).        
Petroleum Refining: All               4.360      12.326  ..........  ..........       0.024  ..........  ..........  ..........  Sec. 112(d)(2).        
 Processes {Subject to                                                                                                                                  
 Regulation is 97.55% of total                                                                                                                          
 values}.                                                                                                                                               
Phthalic Anhydride Production..  ..........       0.301  ..........  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
Plastic Foam Products            ..........       1.264  ..........  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
 Manufacturing.                                                                                                                                         
Portland Cement Manufacture:          0.567       0.145  ..........       8.873       1.530  ..........  ..........  ..........  Sec. 112(d)(2).        
 Hazardous Waste Kilns.                                                                                                                                 
Portland Cement Manufacture:          0.709       0.550  ..........       0.801       2.297  ..........  ..........  ..........  Sec. 112(d)(2).        
 Non-Hazardous Waste Kilns.                                                                                                                             
Primary Aluminum Production....      38.431       7.604       5.953  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
Pulp and Paper--Kraft Recovery        1.019       7.455  ..........       0.006       1.057  ..........  ..........  ..........  Sec. 112(d)(2).        
 Furnaces.                                                                                                                                              
Pulp and Paper--Lime Kilns.....       0.068       2.102  ..........  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
Secondary Aluminum Smelting....  ..........  ..........  ..........       3.549  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
Secondary Lead Smelting........       0.005       0.803  ..........       0.079       0.006  ..........  ..........  ..........  Sec. 112(d)(2).        
Ship Building and Repair         ..........       0.156  ..........  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
 (Surface Coating) {Subject to                                                                                                                          
 Regulation is 94.41% of total                                                                                                                          
 values}.                                                                                                                                               
Tire Manufacturing.............  ..........       0.080  ..........  ..........  ..........  ..........      29.512  ..........  Sec. 112(d)(2).        
Transportation Equipment         ..........       0.593  ..........  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
 Manufacturing (SICs combined).                                                                                                                         
Wood Household Furniture         ..........       0.127  ..........  ..........  ..........  ..........  ..........  ..........  Sec. 112(d)(2).        
 Manufacturing {Subject to                                                                                                                              
 Regulation is 97.9% of total                                                                                                                           
 values}.                                                                                                                                               
Medical Waste Incineration.....  ..........       0.009       0.023      12.329      27.824      25.689  ..........  ..........  Sec. 129.              
Municipal Waste Combustion.....  ..........       0.001       0.280      68.183      30.606      51.042  ..........  ..........  Sec. 129.              
Commercial Coal Combustion.....       9.812       1.984       4.214  ..........       0.432  ..........  ..........  ..........  Sec. 112 (ICCR).       
Commercial Oil Combustion......       0.009       0.612       2.020  ..........       0.111  ..........  ..........  ..........  Sec. 112 (ICCR).       
Commercial Wood/Wood Residue          0.275       0.411       2.989  ..........       0.004  ..........  ..........  ..........  Sec. 112 (ICCR).       
 Combustion b.                                                                                                                                          
Industrial Coal Combustion.....       0.842       1.803       3.704  ..........      12.253  ..........  ..........  ..........  Sec. 112 (ICCR).       
Industrial Oil Combustion......       0.008       0.584       0.759  ..........       3.228       0.032  ..........  ..........  Sec. 112 (ICCR).       
Industrial Stationary IC              0.024       0.058       2.963  ..........  ..........  ..........  ..........  ..........  Sec. 112 (ICCR).       
 Engines--Diesel.                                                                                                                                       
Industrial Stationary IC              0.281       0.547  ..........  ..........       2.487  ..........  ..........  ..........  Sec. 112 (ICCR).       
 Engines--Natural Gas.                                                                                                                                  

[[Page 17850]]

                                                                                                                                                        
Industrial Wood/Wood Residue          0.330       0.790      67.883       0.947       0.113  ..........  ..........  ..........  Sec. 112 (ICCR).       
 Combustion b.                                                                                                                                          
Total % Contribution for             85.003      86.834      91.829      95.452      91.762      94.484     100.000       1.873  .......................
 Sources Subject to Regulation.                                                                                                                         
                                ------------------------------------------------------------------------------------------------                        
112(c)(6) Source Categories for                                                                                                                         
            Listing                                                                                                                                     
(8) Percent contribution                                                                                                                                
                                ------------------------------------------------------------------------------------------------                        
Gasoline Distribution            ..........  ..........  ..........  ..........  ..........  ..........  ..........      81.266  .......................
 (Aviation).                                                                                                                                            
Open Burning of Scrap Tires....      14.309       3.377  ..........  ..........  ..........  ..........  ..........  ..........  .......................
Total % Contribution for             14.309       3.377       0.000       0.000       0.000       0.000       0.000      81.266  .......................
 112(c)(6) Source Categories                                                                                                                            
 for Listing.                                                                                                                                           
Cumulative % Contribution Total      99.313      90.211      91.829      95.452      91.762      94.484     100.000      83.140  .......................
                                ------------------------------------------------------------------------------------------------                        
  Other Source Categories that                                                                                                                          
   Are Candidates for Listing                                                                                                                           
(8) Percent contribution                                                                                                                                
                                ------------------------------------------------------------------------------------------------                        
Abrasive Grain (Media)           ..........       0.285  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 Manufacturing.                                                                                                                                         
Adhesives and Sealants (SICs     ..........       0.048  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 combined) a.                                                                                                                                           
Agricultural Chemicals a.......  ..........       0.104  ..........  ..........  ..........  ..........  ..........  ..........  .......................
Battery Production.............  ..........  ..........  ..........  ..........       0.011  ..........  ..........  ..........  .......................
Carbamate Insecticides           ..........       0.047  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 Production a.                                                                                                                                          
Carbon Black Production a......       0.123       0.050  ..........  ..........       0.139  ..........  ..........  ..........  .......................
Carbon Reactivation Furnaces...  ..........  ..........  ..........       0.002  ..........  ..........  ..........  ..........  .......................
Chemical Preparations (SICs      ..........       0.078  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 combined).                                                                                                                                             
Clay Refractories a............  ..........       0.006  ..........  ..........  ..........  ..........  ..........  ..........  .......................
Cleaning Products (SICs          ..........       0.016  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 combined).                                                                                                                                             
Commercial Natural Gas           ..........      <0.001       2.950  ..........  ..........  ..........  ..........  ..........  .......................
 Combustion a.                                                                                                                                          
Commercial Printing, Gravure     ..........       0.002  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 {Not Subject to Regulation is                                                                                                                          
 0.65% of total values}.                                                                                                                                
Commercial Printing,             ..........       0.119  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 Letterpress a.                                                                                                                                         
Crematories a..................      <0.001      <0.001  ..........      <0.001      <0.001  ..........  ..........  ..........  .......................
Custom Compound Purchased        ..........  ..........  ..........  ..........       0.071  ..........  ..........  ..........  .......................
 Resins Manufacture.                                                                                                                                    
Dental Preparation and Use.....  ..........  ..........  ..........  ..........       0.445  ..........  ..........  ..........  .......................
Drum and Barrel Reclamation....      <0.001      <0.001  ..........       0.005  ..........  ..........  ..........  ..........  .......................
Electronic and Other Electric    ..........       0.350  ..........  ..........       0.491  ..........  ..........  ..........  .......................
 Equipment Manufacturing (SICs                                                                                                                          
 combined).                                                                                                                                             
Fabricated Rubber Products.....  ..........       1.700  ..........  ..........  ..........  ..........  ..........  ..........  .......................
Ferroalloy Manufacture a.......       0.071       0.006  ..........  ..........  ..........  ..........  ..........  ..........  .......................
Fiber Cans, Drums, and Similar   ..........       0.058  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 Products.                                                                                                                                              
Fluorescent Lamp Recycling.....  ..........  ..........  ..........  ..........       0.003  ..........  ..........  ..........  .......................
Food Products (SICs combined) a  ..........       0.041  ..........  ..........  ..........  ..........  ..........  ..........  .......................
Gasoline Distribution (Stage I)  ..........       3.670  ..........  ..........  ..........  ..........  ..........       16.86  .......................
 {Not Subject to Regulation is                                                                                                                          
 90% of total value}.                                                                                                                                   
General Laboratory Activities..  ..........  ..........  ..........  ..........       0.445  ..........  ..........  ..........  .......................
Geothermal Power...............  ..........  ..........  ..........  ..........       0.723  ..........  ..........  ..........  .......................
Gum and Wood Chemical a........  ..........       0.006  ..........  ..........  ..........  ..........  ..........  ..........  .......................
Industrial Gases Manufacturing.  ..........       0.108  ..........  ..........  ..........  ..........  ..........  ..........  .......................
Industrial Inorganic Chemicals   ..........       0.180  ..........  ..........       0.556  ..........  ..........  ..........  .......................
 Manufacturing.                                                                                                                                         
Industrial Machinery and         ..........       0.032  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 Electrical Equipment (SICs                                                                                                                             
 combined) a.                                                                                                                                           
Industrial Natural Gas           ..........      <0.001       1.425  ..........  ..........  ..........  ..........  ..........  .......................
 Combustion a.                                                                                                                                          
Industrial Organic Chemicals     ..........       0.028  ..........  ..........      <0.001  ..........  ..........  ..........  .......................
 Manufacturing {Not Subject to                                                                                                                          
 Regulation is 1.19% of total                                                                                                                           
 values}.                                                                                                                                               
Industrial Turbines--Diesel      ..........      <0.001       2.658  ..........       0.050  ..........  ..........  ..........  .......................
 Fired a.                                                                                                                                               
Industrial Turbines--Natural     ..........       0.159       1.135  ..........       0.896  ..........  ..........  ..........  .......................
 Gas Fired a.                                                                                                                                           
Industrial Waste Oil Combustion       0.365       0.090  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 a.                                                                                                                                                     
Inorganic Pigments               ..........  ..........  ..........  ..........       0.003  ..........  ..........  ..........  .......................
 Manufacturing.                                                                                                                                         
Instrument Manufacturing.......  ..........  ..........  ..........  ..........       0.278  ..........  ..........  ..........  .......................
Iron Foundries a...............       0.016       0.002  ..........       0.215  ..........  ..........  ..........  ..........  .......................
Lamp Breakage..................  ..........  ..........  ..........  ..........       0.835  ..........  ..........  ..........  .......................
Landfill (Gas) Flares a........      <0.001       0.005  ..........  ..........  ..........  ..........  ..........  ..........  .......................
Lime Manufacturing a...........  ..........  ..........  ..........  ..........       0.390  ..........  ..........  ..........  .......................
Lubricating Oils and Grease a..  ..........       0.001  ..........  ..........  ..........  ..........  ..........  ..........  .......................
Metal Household Furniture a....  ..........      <0.001  ..........  ..........  ..........  ..........  ..........  ..........  .......................
Miscellaneous Manufacturing....  ..........       0.076  ..........  ..........  ..........  ..........  ..........  ..........  .......................

[[Page 17851]]

                                                                                                                                                        
Miscellaneous Plastics Products  ..........       0.066  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 a.                                                                                                                                                     
Naphthalene--Miscellaneous Uses  ..........       0.014  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 a.                                                                                                                                                     
Naphthalene Sulfonates           ..........       0.075  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 Production a.                                                                                                                                          
Nonmetallic Mineral Products...  ..........      <0.001  ..........  ..........       0.003  ..........  ..........  ..........  .......................
Office Furniture, Except Wood    ..........       0.074  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 Manufacturing a.                                                                                                                                       
Other Biological Incineration a  ..........  ..........       0.002       2.989  ..........       1.585  ..........  ..........  .......................
Other Miscellaneous (SICs        ..........       0.017  ..........  ..........       0.139  ..........  ..........  ..........  .......................
 combined).                                                                                                                                             
Other Secondary Nonferrous       ..........  ..........  ..........  ..........       0.139  ..........  ..........  ..........  .......................
 Metals Recovery.                                                                                                                                       
Other Structural Clay Products   ..........       0.006  ..........  ..........       0.061  ..........  ..........  ..........  .......................
 a.                                                                                                                                                     
Partitions and Fixtures a......  ..........       0.050  ..........  ..........  ..........  ..........  ..........  ..........  .......................
Petroleum Refining: All               0.110       0.310  ..........  ..........       0.001  ..........  ..........  ..........  .......................
 Processes {ot Subject                                                                                                                         
 to Regulation is 2.45% of                                                                                                                              
 total value}.                                                                                                                                          
Pharmaceutical Preparations and  ..........       0.009  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 Manufacturing (SICs combined)                                                                                                                          
 a.                                                                                                                                                     
Plastics Material and Resins     ..........       0.098  ..........  ..........       0.002  ..........  ..........  ..........  .......................
 Manufacturing a.                                                                                                                                       
Porcelain Electrical Supplies..  ..........       0.024  ..........  ..........  ..........  ..........  ..........  ..........  .......................
Primary Copper Production a....  ..........  ..........  ..........  ..........       0.412  ..........  ..........  ..........  .......................
Primary Lead Smelting a........  ..........  ..........  ..........  ..........       0.723  ..........  ..........  ..........  .......................
Primary Metal Products           ..........       0.309  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 Manufacturing (SICs combined).                                                                                                                         
Public Building and Related      ..........       0.133  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 Furniture a.                                                                                                                                           
Pulp and Paper--Sulfite          ..........       0.071  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 Recovery Furnaces a.                                                                                                                                   
Scrap or Waste Tire                  <0.001      <0.001  ..........       0.006  ..........       0.666  ..........  ..........  .......................
 Incineration a.                                                                                                                                        
Secondary Copper Smelting......  ..........  ..........  ..........       0.127  ..........  ..........  ..........  ..........  .......................
Secondary Mercury Production...  ..........  ..........  ..........  ..........       0.418  ..........  ..........  ..........  .......................
Sewage Sludge Incineration a...       0.002       0.019  ..........       0.495       1.002       3.265  ..........  ..........  .......................
Ship Building and Repair         ..........       0.009  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 (Surface Coating) {Not Subject                                                                                                                         
 to Regulation is 5.59% of                                                                                                                              
 total value}.                                                                                                                                          
Surface Active Agents            ..........       0.085  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 Manufacturing a.                                                                                                                                       
Textiles (SICs Combined) a.....  ..........       0.111  ..........  ..........  ..........  ..........  ..........  ..........  .......................
Wood Household Furniture         ..........       0.003  ..........  ..........  ..........  ..........  ..........  ..........  .......................
 Manufacturing {Not Subject to                                                                                                                          
 Regulation is 2.1% of total                                                                                                                            
 value}.                                                                                                                                                
Wood Treatment/Wood Preserving.  ..........       1.038  ..........       0.710  ..........  ..........  ..........  ..........  .......................
                                ------------------------------------------------------------------------------------------------                        
    Total % Contribution for          0.687       9.789       8.171       4.548       8.238       5.516       0.000      16.860  .......................
     Other Source Categories                                                                                                                            
     that are Candidates for                                                                                                                            
     Listing.                                                                                                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
a Source categories for which major sources are listed for regulation under section 112(c)(1), but for which the EPA is not counting emissions toward   
  the section 112(c)(6) 90 percent goal. These source categories emit minor amounts of 112(c)(6) HAPs, and, as such, although the major sources in the  
  source category will be regulated under section 112(d)(2), as already planned, the area sources will not.                                             
b At this time, it is unclear as to whether this source category will be regulated as section 112 or section 129 authority.                             


       Table 3.--Cross-Reference Between Section 112(c)(6) Inventory of Sources and Applicable Regulations      
----------------------------------------------------------------------------------------------------------------
         112(c)(6) Category                  Applicable regulation              112 Source Category Names a     
----------------------------------------------------------------------------------------------------------------
Adhesives and Sealants..............  Sec. 112(d)(2)....................  Manufacture of Paints, Coatings, and  
                                                                           Adhesives.b                          
Aerospace Industry (Surface Coating)  Sec. 112(d)(2)....................  Aerospace Industries.                 
Agricultural Chemicals..............  Sec. 112(d)(2)....................  4-Chloro-2-Methylphenoxyacetic Acid   
                                                                           Production, 2,4-D Salts and Esters   
                                                                           Production, 4,6-Dinitro-o-Cresol     
                                                                           Production, Butadiene-Furfural       
                                                                           Cotrimer Production, Captafol        
                                                                           Production, Captan Production,       
                                                                           Chloroneb Production, Chlorothalonil 
                                                                           Production, Dacthal (tm) Production, 
                                                                           Sodium Pentachlorophenate Production,
                                                                           Tordon (tm) Acid Production.b        
Asphalt Hot-Mix Production..........  Sec. 112(d)(2)....................  Asphalt Concrete Manufacturing.       
Asphalt Roofing Production..........  Sec. 112(d)(2)....................  Asphalt Roofing Manufacturing.        
Blast Furnace and Steel Mills.......  Sec. 112(d)(2)....................  Integrated Iron and Steel Manufacture.
Carbamate Insecticides Production...  Sec. 112(d)(2)....................  4-Chloro-2-Methylphenoxyacetic Acid   
                                                                           Production, 2,4-D Salts and Esters   
                                                                           Production, 4,6-Dinitro-o-Cresol     
                                                                           Production, Butadiene-Furfural       
                                                                           Cotrimer Production, Captafol        
                                                                           Production, Captan Production,       
                                                                           Chloroneb Production, Chlorothalonil 
                                                                           Production, Dacthal (tm) Production, 
                                                                           Sodium Pentachlorophenate Production,
                                                                           Tordon (tm) Acid Production.         
Carbon Black Production.............  Sec. 112(d)(2)....................  Carbon Black Production.              

[[Page 17852]]

                                                                                                                
Chemical Manufacturing: Cyclic Crude  Sec. 112(d)(2)....................  Synthetic Organic Chemical            
 and Intermediate Production.                                              Manufacturing.                       
Chloralkali Production..............  Sec. 112(d)(2)....................  Chlorine Production.                  
Chlorinated Solvents Production.....  Sec. 112(d)(2)....................  Synthetic Organic Chemical            
                                                                           Manufacturing.                       
Chromium Plating: Chromic Anodizing.  Sec. 112(d)(2)....................  Chromic Acid Anodizing.               
Clay Refractories...................  Sec. 112(d)(2)....................  Chromium Refractory Production.c      
Coke Ovens: By-Product Recovery       Sec. 112(d)(2)....................  Coke By-Product Plants.               
 Plants.                                                                                                        
Coke Ovens: Charging, Topside & Door  Sec. 112(d)(2)....................  Coke Ovens: Charging, Top Side, and   
 Leaks.                                                                    Door Leaks.                          
Coke Ovens: Pushing, Quenching &      Sec. 112(d)(2)....................  Coke Ovens: Pushing, Quenching, and   
 Battery Stacks.                                                           Battery Stacks.                      
Commercial Printing, Gravure........  Sec. 112(d)(2)....................  Printing/Publishing (Surface Coating).
Commercial Printing, Letterpress and  Sec. 112(d)(2)....................  Printing/Publishing (Surface Coating).
 Screen.                                                                                                        
Fabricated Metal Products...........  Sec. 112(d)(2)....................  Miscellaneous Metal Parts and Products
                                                                           (Surface Coating), Halogenated       
                                                                           Solvent Cleaning.                    
Ferroalloy Manufacture..............  Sec. 112(d)(2)....................  Ferroalloys Production.               
Food Products.......................  Sec. 112(d)(2)....................  Vegetable Oil Production.             
Gasoline Distribution (Stage I).....  Sec. 112(d)(2)....................  Gasoline Distribution (Stage 1).      
Gum and Wood Chemical...............  Sec. 112(d)(2)....................  Synthetic Organic Chemical            
                                                                           Manufacturing.                       
Hazardous Waste Incineration........  Sec. 112(d)(2)....................  Hazardous Waste Incineration.         
Industrial Machinery and Electrical   Sec. 112(d)(2)....................  Miscellaneous Metal Parts and Products
 Equipment.                                                                (Surface Coating), Semiconductor     
                                                                           Manufacturing, Halogenated Solvent   
                                                                           Cleaning.                            
Industrial Organic Chemicals          Sec. 112(d)(2)....................  Synthetic Organic Chemical            
 Manufacturing.                                                            Manufacturing.                       
Iron Foundries......................  Sec. 112(d)(2)....................  Iron Foundries.                       
Lightweight Aggregate Kilns.........  Sec. 112(d)(2)....................  Hazardous Waste Incineration.         
Lime Manufacturing..................  Sec. 112(d)(2)....................  Lime Manufacturing.                   
Lubricating Oils and Grease.........  Sec. 112(d)(2)....................  Organic Liquids Distribution (Non-    
                                                                           Gasoline), Petroleum Refineries.     
Metal Household Furniture...........  Sec. 112(d)(2)....................  Metal Furniture (Surface Coating),    
                                                                           Halogenated Solvent Cleaners.        
Miscellaneous Plastics Products.....  Sec. 112(d)(2)....................  Plastic Parts and Products (Surface   
                                                                           Coating).                            
Naphthalene--Miscellaneous Uses.....  Sec. 112(d)(2)....................  Synthetic Organic Chemical            
                                                                           Manufacturing.                       
Naphthalene Production..............  Sec. 112(d)(2)....................  Synthetic Organic Chemical            
                                                                           Manufacturing.                       
Naphthalene Sulfonates Production...  Sec. 112(d)(2)....................  Synthetic Organic Chemical            
                                                                           Manufacturing.                       
Office Furniture, Except Wood         Sec. 112(d)(2)....................  Metal Furniture (Surface Coating),    
 Manufacturing.                                                            Halogenated Solvent Cleaners.        
Other Structural Clay Products......  Sec. 112(d)(2)....................  Clay Products Manufacturing.          
Paints and Allied Products..........  Sec. 112(d)(2)....................  Manufacture of Paints, Coatings, and  
                                                                           Adhesives.b                          
Paper Coated and Laminated,           Sec. 112(d)(2)....................  Printing/Publishing (Surface Coating),
 Packaging.                                                                Paper and Other Webs (Surface        
                                                                           Coating).                            
Partitions and Fixtures.............  Sec. 112(d)(2)....................  Metal Furniture (Surface Coating),    
                                                                           Wood Furniture (Surface Coating),    
                                                                           Halogenated Solvent Cleaners, Flat   
                                                                           Wood Paneling, Miscellaneous Metal   
                                                                           Parts and Products (Surface Coating),
                                                                           Plastic Parts and Products (Surface  
                                                                           Coating).                            
Pesticides Manufacture..............  Sec. 112(d)(2)....................  4-Chloro-2-Methylphenoxyacetic Acid   
                                                                           Production, 2,4-D Salts and Esters   
                                                                           Production, 4,6-Dinitro-o-Cresol     
                                                                           Production, Butadiene-Furfural       
                                                                           Cotrimer Production, Captafol        
                                                                           Production, Captan Production,       
                                                                           Chloroneb Production, Chlorothalonil 
                                                                           Production, Dacthal (tm) Production, 
                                                                           Sodium Pentachlorophenate Production,
                                                                           Tordon (tm) Acid Production.         
Petroleum Refining: All Processes...  Sec. 112(d)(2)....................  Petroleum Refineries--Other Sources   
                                                                           Not Distinctly Listed, Petroleum     
                                                                           Refineries--Catalytic Cracking (Fluid
                                                                           and other) Units, Catalytic Reforming
                                                                           Units, and Sulfur Plant Units.       
Pharmaceutical Preparations and       Sec. 112(d)(2)....................  Pharmaceuticals Production.           
 Manufacturing.                                                                                                 
Phthalic Anhydride Production.......  Sec. 112(d)(2)....................  Synthetic Organic Chemical            
                                                                           Manufacturing.                       
Plastic Foam Products Manufacturing.  Sec. 112(d)(2)....................  Flexible Polyurethane Foam Production.

[[Page 17853]]

                                                                                                                
Plastics Material and Resins          Sec. 112(d)(2)....................  Acetal Resins Production, Alkyd Resins
 Manufacturing.                                                            Production, Amino Resins Production, 
                                                                           Boat Manufacturing,                  
                                                                           Carboxymethylcellulose Production,   
                                                                           Cellophane Production, Cellulose     
                                                                           Ethers Production, Maleic Anhydride  
                                                                           Copolymers Production,               
                                                                           Methylcellulose Production, Phenolic 
                                                                           Resins Production, Polyester Resins  
                                                                           Production, Polymerized Vinylidene   
                                                                           Chloride Production, Polymethyl      
                                                                           Methacrylate Resins Production,      
                                                                           Polyvinyl Acetate Emulsions          
                                                                           Production, Polyvinyl Alcohol        
                                                                           Production, Polyvinyl Butyral        
                                                                           Production, Polyvinyl Chloride and   
                                                                           Copolymers Production, Reinforced    
                                                                           Plastic Composites Production, Epoxy 
                                                                           Resins Production and Non-Nylon      
                                                                           Polyamides Production, Polyether     
                                                                           Polyols Production, Group I Polymers 
                                                                           and Resins, Group IV Polymers and    
                                                                           Resins: acrylonitrile butadiene      
                                                                           styrene resin (ABS), styrene         
                                                                           acrylonitrile resin (SAN), methyl    
                                                                           methacrylate acrylonitrile butadiene 
                                                                           styrene resin (MABS), methyl         
                                                                           methacrylate butadiene styrene resin 
                                                                           (MBS), polystyrene resin, poly       
                                                                           (ethylene terephthalate) resin (PET),
                                                                           and nitrile resin.b                  
Portland Cement Manufacture:          Sec. 112(d)(2)....................  Hazardous Waste Incineration.         
 Hazardous Waste Kilns.                                                                                         
Portland Cement Manufacture: Non-     Sec. 112(d)(2)....................  Portland Cement Manufacturing.        
 Hazardous Waste Kilns.                                                                                         
Primary Aluminum Production.........  Sec. 112(d)(2)....................  Primary Aluminum Production.          
Primary Copper Production...........  Sec. 112(d)(2)....................  Primary Copper Smelting.              
Primary Lead Smelting...............  Sec. 112(d)(2)....................  Primary Lead Smelting.                
Public Building and Related           Sec. 112(d)(2)....................  Metal Furniture (Surface Coating),    
 Furniture.                                                                Halogenated Solvent Cleaners, Wood   
                                                                           Furniture (Surface Coating).         
Pulp and Paper--Kraft Recovery        Sec. 112(d)(2)....................  Pulp and Paper Production.            
 Furnaces.                                                                                                      
Pulp and Paper--Lime Kilns..........  Sec. 112(d)(2)....................  Pulp and Paper Production.            
Pulp and Paper--Sulfite Recovery      Sec. 112(d)(2)....................  Pulp and Paper Production.            
 Furnaces.                                                                                                      
Secondary Aluminum Smelting.........  Sec. 112(d)(2)....................  Secondary Aluminum Production.        
Secondary Lead Smelting.............  Sec. 112(d)(2)....................  Secondary Lead Smelting.              
Sewage Sludge Incineration..........  Sec. 112(d)(2)....................  Sewage Sludge Incineration.           
Ship Building and Repair (Surface     Sec. 112(d)(2)....................  Shipbuilding and Ship Repair (Surface 
 Coating).                                                                 Coating).                            
Surface Active Agents Manufacturing.  Sec. 112(d)(2)....................  Synthetic Organic Chemical            
                                                                           Manufacturing.                       
Textiles............................  Sec. 112(d)(2)....................  Printing, Coating, and Dyeing of      
                                                                           Fabrics.                             
Tire Manufacturing..................  Sec. 112(d)(2)....................  Tire Production.                      
Transportation Equipment              Sec. 112(d)(2)....................  Miscellaneous Metal Parts and Products
 Manufacturing.                                                            (Surface Coating), Auto and Light    
                                                                           Duty Truck (Surface Coating),        
                                                                           Shipbuilding and Ship Repair (Surface
                                                                           Coating), Boat Manufacturing,        
                                                                           Halogenated Solvent Cleaners.        
Wood Household Furniture              Sec. 112(d)(2)....................  Wood Furniture (Surface Coating).     
 Manufacturing.                                                                                                 
Medical Waste Incineration..........  Sec. 129..........................  Medical Waste Incineration.           
Municipal Waste Combustion..........  Sec. 129..........................  Municipal Waste Combustion.           
Commercial Coal Combustion..........  Sec. 112 (ICCR)...................  Institutional/Commercial Boilers.d    
Commercial Natural Gas Combustion...  Sec. 112 (ICCR)...................  Institutional/Commercial Boilers.d    
Commercial Oil Combustion...........  Sec. 112 (ICCR)...................  Institutional/Commercial Boilers.d    
Commercial Wood/Wood Residue          Sec. 112 (ICCR)...................  Institutional/Commercial Boilers.d    
 Combustion.                                                                                                    
Industrial Coal Combustion..........  Sec. 112 (ICCR)...................  Industrial Boilers.d                  
Industrial Natural Gas Combustion...  Sec. 112 (ICCR)...................  Industrial Boilers.d                  
Industrial Oil Combustion...........  Sec. 112 (ICCR)...................  Industrial Boilers.d                  
Industrial Stationary IC Engines--    Sec. 112 (ICCR)...................  Stationary Internal Combustion        
 Diesel.                                                                   Engines.d                            
Industrial Stationary IC Engines--    Sec. 112 (ICCR)...................  Stationary Internal Combustion        
 Natural Gas.                                                              Engines.d                            
Industrial Turbines--Diesel Fired...  Sec. 112 (ICCR)...................  Stationary Turbines.d                 
Industrial Turbines: Natural Gas      Sec. 112 (ICCR)...................  Stationary Turbines.d                 
 Fired.                                                                                                         
Industrial Waste Oil Combustion.....  Sec. 112 (ICCR)...................  Industrial Boilers.d                  
Industrial Wood/Wood Residue          Sec. 112 (ICCR)...................  Industrial Boilers.d                  
 Combustion.                                                                                                    
Landfill (Gas) Flares...............  Sec. 112 (ICCR)...................  Municipal Landfills.d                 

[[Page 17854]]

                                                                                                                
Crematories.........................  Sec. 129 (ICCR)...................  Crematories.d                         
Other Biological Incineration.......  Sec. 129 (ICCR)...................  Other Biological Incineration.d       
Scrap or Waste Tire Incineration....  Sec. 129 (ICCR)...................  Scrap or Waste Tire Incineration.d    
----------------------------------------------------------------------------------------------------------------
a 112 Source Category Names were from the National Emission Standard for Hazardous Air Pollutants; Revision of  
  List of Categories of Sources and Schedule for Standards Under Section 112 of the Clean Air Act, Federal      
  Register Notice, February 12, 1998 pages 7155-7166.                                                           
b The reader is referred to a November 7, 1996 Federal Register Notice (61 FR 57602) which concerns the         
  anticipated listing action involving the subsumption of a number of source categories into one source         
  category, called the Miscellaneous Organic Chemical Processes source category. Each of the anticipated        
  subsumed categories are scheduled for standards promulgation no later than November 15, 2000; thus, the new   
  source category would be also scheduled for that regulatory time frame.                                       
c Source category ``chromium refractory production'' will be expanded to become ``refractories production.''    
d The Industrial Combustion Coordinated Rulemaking (ICCR) is to regulate various combustion sources by          
  consolidating authorities under sections 112 and 129. The section 112 categories are: combustion turbines,    
  reciprocating internal combustion engines, process heaters, institutional/commercial boilers, and industrial  
  boilers; while the section 129 categories are: industrial/commercial incinerators and other solid waste       
  incinerators.                                                                                                 


BILLING CODE 6560-50-P

[[Page 17855]]

[GRAPHIC] [TIFF OMITTED] TN10AP98.001



[FR Doc. 98-9557 Filed 4-9-98; 8:45 am]
BILLING CODE 6560-50-C