[Federal Register Volume 73, Number 152 (Wednesday, August 6, 2008)]
[Proposed Rules]
[Pages 45673-45679]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E8-18142]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 63

[EPA-HQ-OAR-2003-0121; FRL-8701-8]
RIN 2060-AO07


National Emission Standards for Organic Hazardous Air Pollutants 
From the Synthetic Organic Chemical Manufacturing Industry for Process 
Vents, Storage Vessels, Transfer Operations, and Wastewater; and 
National Emission Standards for Hazardous Air Pollutants: Miscellaneous 
Organic Chemical Manufacturing

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule; amendments.

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SUMMARY: On November 10, 2003, EPA promulgated national emission 
standards for hazardous air pollutants (NESHAP) for miscellaneous 
organic chemical manufacturing. The rule is referred to as the 
miscellaneous organic NESHAP or the MON. The MON incorporates by 
reference the wastewater tank requirements in the National Emission 
Standards for Organic Hazardous Air Pollutants From the Synthetic 
Organic Chemical Manufacturing Industry for Process Vents, Storage 
Vessels, Transfer Operations, and Wastewater, which EPA promulgated on 
April 24, 1994, and which is referred to as the hazardous organic 
NESHAP or the HON. In this action EPA proposes to amend the HON, and 
thereby, the MON, by adding an equivalent means of emission limitation 
for wastewater tanks. This action also clarifies and corrects technical 
inconsistencies that have been discovered in the MON.

DATES: Comments. Comments must be received on or before September 22, 
2008.
    Public Hearing. If anyone contacts EPA requesting to speak at a 
public hearing by August 18, 2008, a public hearing will be held on 
August 21, 2008.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-HQ-
OAR-2003-0121, by one of the following methods:
     www.regulations.gov. Follow the on-line instructions for 
submitting comments.
     E-mail: [email protected].
     Fax: (202) 566-9744.
     Mail: U.S. Postal Service, send comments to: Air and 
Radiation Docket and Information Center, EPA, Mailcode: 2822T, 1200 
Pennsylvania Ave., NW., Washington, DC 20460. Please include a total of 
two copies.
     Hand Delivery: In person or by courier, deliver your 
comments to: Air and Radiation Docket, EPA, Room 3334, 1301 
Constitution Avenue, NW. Washington, DC 20004. Please include a total 
of two copies. Such deliveries are only accepted during the Docket's 
normal hours of operation, and special arrangements should be made for 
deliveries of boxed information. We request that a separate copy of 
each public comment also be sent to the contact person listed below 
(see FOR FURTHER INFORMATION CONTACT).
    Instructions: Direct your comments to Docket ID No. EPA-HQ-OAR-
2003-0121. EPA's policy is that all comments received will be included 
in the public docket without change and may be made available online at 
www.regulations.gov, including any personal information provided, 
unless the comment includes information claimed to be confidential 
business information (CBI) or other information whose disclosure is 
restricted by statute. Do not submit information that you consider to 
be CBI or otherwise protected through www.regulations.gov or e-mail. 
The www.regulations.gov Web site is an ``anonymous access'' system, 
which means EPA will not know your identity or contact information 
unless you provide it in the body of your comment. If you send an e-
mail comment directly to EPA without going through www.regulations.gov, 
your e-mail address will be automatically captured and included as part 
of the comment that is placed in the public docket and made available 
on the Internet. If you submit an electronic comment, EPA recommends 
that you include your name and other contact information in the body of 
your comment and with any disk or CD-ROM you submit. If EPA cannot read 
your comment due to technical difficulties and cannot contact you for 
clarification, EPA may not be able to consider your comment. Electronic 
files should avoid the use of special characters, any form of 
encryption, and be free of any defects or viruses. For additional 
information

[[Page 45674]]

about EPA's public docket, visit the EPA Docket Center homepage at 
http://www.epa.gov/epahome/dockets.htm.
    Docket: All documents in the docket are listed in the 
www.regulations.gov index. Although listed in the index, some 
information is not publicly available, e.g., CBI or other information 
whose disclosure is restricted by statute. Certain other material, such 
as copyrighted material, will be publicly available only in hard copy. 
Publicly available docket materials are available either electronically 
in www.regulations.gov or in hard copy at the Air and Radiation Docket, 
EPA West Building, Room 3334, 1301 Constitution Ave., NW., Washington, 
DC. The Public Reading Room is open from 8:30 a.m. to 4:30 p.m., Monday 
through Friday, excluding legal holidays. The telephone number for the 
Public Reading Room is (202) 566-1744, and the telephone number for the 
Air and Radiation Docket is (202) 566-1742.
    Public Hearing. If you are interested in attending the public 
hearing, contact Ms. Janet Eck at (919) 541-7946 to verify that a 
hearing will be held. If a public hearing is held, it will be held at 
10 a.m. at EPA's Campus located at 109 T.W. Alexander Drive in Research 
Triangle Park, NC, or an alternate site nearby. If no one contacts EPA 
requesting to speak at a public hearing concerning this rule by August 
18, 2008 this hearing will be cancelled without further notice.

FOR FURTHER INFORMATION CONTACT: Mr. Randy McDonald, Office of Air 
Quality Planning and Standards, Sector Policies and Programs Division, 
Coatings and Chemicals Group (E143-01), U.S. EPA, Research Triangle 
Park, NC 27711; telephone number: (919) 541-5402; fax number: (919) 
541-0246; e-mail address: [email protected].

SUPPLEMENTARY INFORMATION: Regulated Entities. Categories and entities 
potentially regulated by this action include:

------------------------------------------------------------------------
                                                         Examples of
          Category                   NAICS *         regulated entities
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Industry....................  3251, 3252, 3253,     Producers of
                               3254, 3255, 3256,     specialty organic
                               and 3259, with        chemicals,
                               several exceptions.   explosives, certain
                                                     polymers and
                                                     resins, and certain
                                                     pesticide
                                                     intermediates.
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* North American Industrial Classification System.

    This table is not intended to be exhaustive, but rather provides a 
guide for readers regarding entities likely to be regulated by this 
action. To determine whether your facility is regulated by this action, 
you should examine the applicability criteria in Sec.  63.2435. If you 
have any questions regarding the applicability of this action to a 
particular entity, consult the person listed in the preceding FOR 
FURTHER INFORMATION CONTACT section.
    Submitting CBI. Do not submit this information to EPA through 
www.regulations.gov or e-mail. Clearly mark the part or all of the 
information that you claim to be CBI. For CBI information on a disk or 
CD-ROM that you mail to EPA, mark the outside of the disk or CD-ROM as 
CBI and then identify electronically within the disk or CD-ROM the 
specific information that is claimed as CBI. In addition to one 
complete version of the comment that includes information claimed as 
CBI, a copy of the comment that does not contain the information 
claimed as CBI must be submitted for inclusion in the public docket. 
Information so marked will not be disclosed except in accordance with 
procedures set forth in 40 CFR part 2.
    World Wide Web (WWW). In addition to being available in the docket, 
an electronic copy of the proposed rule is also available on the WWW 
through the Technology Transfer Network. Following signature, a copy of 
the proposed rule will be posted on the TTN's policy and guidance page 
for newly proposed or promulgated rules at http://www.epa.gov/ttn/oarpg. The TTN provides information and technology exchange in various 
areas of air pollution control.
    Outline. The information presented in this preamble is organized as 
follows:

I. What amendments are we proposing for the HON, 40 CFR part 63, 
subpart G?
II. What technical corrections are we proposing for the MON, 40 CFR 
part 63, subpart FFFF?
III. Statutory and Executive Order Reviews
    A. Executive Order 12866: Regulatory Planning and Review
    B. Paperwork Reduction Act
    C. Regulatory Flexibility Act
    D. Unfunded Mandates Reform Act
    E. Executive Order 13132: Federalism
    F. Executive Order 13175: Consultation and Coordination With 
Indian Tribal Governments
    G. Executive Order 13045: Protection of Children From 
Environmental Health Risks and Safety Risks
    H. Executive Order 13211: Actions Concerning Regulations That 
Significantly Affect Energy Supply, Distribution, or Use
    I. National Technology Transfer and Advancement Act
    J. Executive Order 12898: Federal Actions to Address 
Environmental Justice in Minority Populations and Low-Income 
Populations

I. What amendments are we proposing for the HON, 40 CFR part 63, 
subpart G?

    The EPA has received a request from Dow Chemical Company for 
approval of an equivalent means emission limitation for wastewater 
tanks subject to the MON. The MON incorporates by reference the 
wastewater tank requirements of the HON in Sec.  63.2485(d) and Table 7 
by requiring compliance with Sec. Sec.  63.132 through 63.148 of the 
HON. With one exception, the standards for wastewater tanks in Sec.  
63.133(a) of the HON require the owner or operator of an affected 
wastewater tank to operate and maintain a fixed roof, an internal 
floating roof, or an external floating roof. Under certain 
circumstances or as an alternative to these requirements, the owner or 
operator may operate and maintain a fixed roof with a closed-vent 
system and control device. If a fixed roof with a closed vent system 
and control device is used, Sec.  63.133(b) requires that each opening 
in the roof be closed. The request and evaluation submitted by Dow 
Chemicals is to use a fixed roof with openings under negative pressure 
and vapors routed through a closed vent system to a control device as 
an equivalent means of emission limitation to the fixed roof vented to 
control device.
    An owner or operator of an affected source covered by the HON may 
request approval to use an equivalent means of emission limitation in 
accordance with Sec.  63.133(a)(2)(iv). The determination of 
equivalency to the reduction in emissions achieved by the requirements 
in Sec.  63.133(a)(2)(i) is based on actual emission tests or 
engineering evaluation and evaluated according to Sec.  63.102(b). 
Under Sec.  63.102(b), if, in the judgment of the Administrator, an 
equivalent means of emission limitation will achieve a reduction in 
organic hazardous air pollutant (HAP) emissions at least equivalent to 
the reduction in organic HAP emissions from that source achieved under 
any design, equipment,

[[Page 45675]]

work practice, or operational standards in 40 CFR part 63, subpart G, 
the Administrator will publish in the Federal Register a notice 
permitting the use of the alternative means for purposes of compliance 
with that requirement. Any such notice shall be published only after 
public notice and an opportunity for a hearing.
    Moreover, the proposed work practice is an appropriate standard 
under section 112(h) of the Clean Air Act (CAA). Specifically, CAA 
section 112(h)(2)(B) provides that a work practice standard can be 
issued in lieu of an emission standard where it is ``not feasible to 
prescribe or enforce an emission standard.'' CAA section 112(h)(2)(B) 
defines the phrase ``not feasible to prescribe or enforce an emission 
standard,'' to mean a situation where the Administrator determines that 
``the application of measurement methodology to a particular class of 
sources is not practicable due to technological and economic 
limitations.'' The proposed work practice is consistent with CAA 
section 112(h)(2)(B) since applying a measurement methodology to this 
class of sources is not technologically feasible due to the number of 
openings and possible emissions points. Emissions from fixed roof tanks 
are evaporative losses that result from barometric pressure and ambient 
temperature changes, as well as filling and emptying operations. The 
flow rate of vent emissions from a tank is very low, except during 
filling. The concentration of HAP in the vent stream varies with the 
degree of saturation of HAP in the tank vapor space. The degree of 
saturation depends on such factors as HAP vapor pressure, tank size, 
and liquid throughput. Low flow rate and varying concentration make 
emission measurement impractical.
    We discussed work practice standards for wastewater tanks in the 
preamble to the proposed HON rule (57 FR 62641). We stated:

    Although considered first, it was determined that a numerical 
standard would not be feasible because it would be difficult to 
capture and measure emissions from this equipment for the purpose of 
evaluating compliance.

    We are considering the Dow Chemical Company's request for a 
determination of equivalency under Sec. Sec.  63.102(b) and 
63.133(a)(2)(iv) since standards for tanks are work practice standards. 
Design features of Dow's wastewater tank include a negative pressure 
generated from the thermal oxidizer blower to draw the clarifier vent 
stream to the thermal oxidizer, an air sweep across the headspace to 
minimize accumulation of flammables, and a low pressure water seal 
system for the rotating raker arm structure. Dow developed the patented 
design to address safety and operational issues inherent in wastewater 
treatment tanks. The tank has uniform air inlets around the 
circumference of the tank at the roof for evenly distributed air flow 
into the clarifier.
    When a fixed roof with a closed vent system and control device is 
used to comply with the requirements for wastewater tanks, the owner or 
operator must meet the requirements in Sec.  63.133(b). Paragraphs 
Sec.  63.133(b)(1), (2), and (3) contain requirements for the fixed 
roof, the control device, and the closed vent system, respectively. 
Paragraph Sec.  63.133(b)(1)(i) requires the fixed roof and all 
openings be maintained in accordance with the no detectable emissions 
requirements in Sec.  63.148 and paragraph Sec.  63.133(b)(1)(ii) 
requires each opening in the fixed roof be maintained in a closed 
position. The request and evaluation submitted by Dow Chemicals is to 
use a fixed roof with openings under negative pressure and vapors 
routed through a closed vent system to a control device as an 
equivalent means of emission limitation to the fixed roof vented to 
control device. Since the performance of the closed vent system and 
control device would be equivalent, Dow's application for equivalency 
must demonstrate that the fixed roof with openings under negative 
pressure performs at least as well as the fixed roof.
    To show equivalency under Sec. Sec.  63.102(b) and 
63.133(a)(2)(iv), Dow tested for detectable emissions at the openings 
of the fixed roof under negative pressure. Dow obtained flame 
ionization detection (FID) readings at these openings and found meter 
readings of less than 500 parts per million by volume (ppmv) above 
background. These results indicate no detectable emissions according to 
Sec.  63.148(d).
    Moreover, Dow correctly states that an enclosure with openings 
under negative pressure has previously been considered by EPA and is an 
accepted control alternative under the NESHAP for the pulp and paper 
industry (40 CFR part 63, subpart S) as well as a control requirement 
under the Benzene Waste NESHAP (40 CFR part 61, subpart FF).
    The Pulp and Paper NESHAP requires pulping equipment systems be 
enclosed and vapors be vented to a closed vent system and routed to a 
control device. Each enclosure must maintain negative pressure at each 
opening. The owner or operator is required to demonstrate initially and 
annually that each enclosure opening is maintained at a negative 
pressure using an anemometer, smoke tubes, or other acceptable test 
method to demonstrate flow into the enclosure opening.
    The Benzene Waste NESHAP has provisions for tanks maintained at a 
pressure less than atmospheric pressure. The standard requires a fixed-
roof and closed-vent system that routes all vapors from a tank to a 
control device. In lieu of maintaining all openings in a closed and 
sealed position, the owner or operator may choose to maintain the tank 
at a pressure less than atmospheric pressure.
    After considering the information in Dow's request and reviewing 
prior EPA judgments, we have concluded that Dow has demonstrated that 
maintaining a fixed roof with openings under negative pressure achieves 
an equivalent emissions reduction compared to maintaining a fixed roof 
with no openings as required by Sec. Sec.  63.102(b) and 
63.133(a)(2)(iv).
    Therefore, we are proposing to amend Sec.  63.133(b) to allow a 
fixed roof with openings maintained at negative pressure for owners or 
operators complying with Sec.  63.133(a)(2)(i) for a fixed roof and 
closed vent system that routes vapors to a control device.
    We are also proposing monitoring requirements to accompany the 
proposed equivalent means of emission limitation, which demonstrate 
that the openings in the enclosure are maintained under negative 
pressure throughout the full range of operating conditions, including 
periods of startup, shutdown, and malfunction.

II. What technical corrections are we proposing for the MON, 40 CFR 
part 63, subpart FFFF?

    We are proposing to edit several provisions to clarify our intent. 
These proposed changes are described in Table 1 of this preamble.

[[Page 45676]]



  Table 1--Technical Clarifications and Corrections to the Mon, 40 CFR
                          Part 63, Subpart FFFF
------------------------------------------------------------------------
           Subpart FFFF              Description of proposed correction
------------------------------------------------------------------------
Sec.   63.2450(o).................  We are adding language to clarify
                                     that, if hydrogen halide and
                                     halogen HAP in a vent stream must
                                     be controlled to meet the emission
                                     limits in Table 3 to subpart FFFF
                                     of 40 CFR part 63, then that vent
                                     stream may not be vented to a
                                     flare. This clarifies our intent
                                     that all other vent streams that
                                     contain hydrogen halide and halogen
                                     HAP may be vented to a flare.
Sec.   63.2460(a).................  We are proposing language to clarify
                                     that any combination of emission
                                     limits for batch process vents
                                     (items 1.a, 1.b, and/or 1.c in
                                     Table 2) may be applied to batch
                                     process vents.
Sec.   63.2460(c)(2)(v)...........  We are proposing to add language to
                                     clarify that the requirement to
                                     demonstrate that a process
                                     condenser is properly operated
                                     applies only in the case where a
                                     HAP is heated above its boiling
                                     point. This requirement only
                                     applies to HAP in batch process
                                     vents and does not apply to HAP as
                                     an impurity.
Sec.   63.2465(b).................  We are proposing to apply the outlet
                                     concentration limit to controlled
                                     and uncontrolled process vents.
Sec.   63.2470(c).................  For storage tanks we are proposing
                                     to incorporate by reference the
                                     monitoring requirements in Sec.
                                     63.1258(b)(1)(v) for
                                     nonregenerative carbon adsorbers.
Sec.   63.2485(n)(1)..............  We are adding neutralization units
                                     to the requirement that wastewater
                                     must be hard-piped between
                                     wastewater treatment tanks and the
                                     activated sludge unit.
Sec.   63.2520(c)(2)..............  We are correcting the reference to
                                     paragraph Sec.   63.2460(c)(5), the
                                     referenced paragraph is Sec.
                                     63.2450(k)(6).
Sec.   63.2550(i).................  1. We are proposing to add a
                                     definition for the term ``bench-
                                     scale process.'' The term will mean
                                     the same as ``bench-scale batch
                                     process,'' as defined in Sec.
                                     63.161.
                                    2. We are proposing to correct the
                                     definition for the term
                                     ``miscellaneous organic chemical
                                     manufacturing process'' by removing
                                     extruder as an endpoint for
                                     processes without an extruder.
Table 6 to 40 CFR part 63, subpart  We are deleting entry 2 as intended
 FFFF.                               (see 70 FR 73121, December 8,
                                     2005). An entry for new sources is
                                     not necessary.
Table 7 to 40 CFR part 63, subpart  We are proposing certain wastewater
 FFF.                                requirements as an alternative for
                                     liquid streams in open systems.
------------------------------------------------------------------------

III. Statutory and Executive Order Reviews

A. Executive Order 12866: Regulatory Planning and Review

    This action is not a ``significant regulatory action'' under the 
terms of Executive Order 12866 (58 FR 51735, October 4, 1993), and is, 
therefore, not subject to review under the Executive Order.

B. Paperwork Reduction Act

    The action does not impose any new information collection burden. 
The proposed amendments would give owners and operators another 
compliance option. Since these changes have the potential to result in 
minor reductions in the information collection burden, the Information 
Collection Request has not been revised. However, OMB has previously 
approved the information collection requirements contained in the 
existing regulation at 40 CFR part 63, subpart FFFF under the 
provisions of the Paperwork Reduction Act, 44 U.S.C. 3501, et seq., and 
has assigned OMB control number 2060-0533. The OMB control numbers for 
EPA's regulations in 40 CFR are listed in 40 CFR part 9.

C. Regulatory Flexibility Act

    The Regulatory Flexibility Act generally requires an agency to 
prepare a regulatory flexibility analysis of any rule subject to notice 
and comment rulemaking requirements under the Administrative Procedure 
Act or any other statute unless the agency certifies that the rule will 
not have a significant economic impact on a substantial number of small 
entities. Small entities include small businesses, small organizations, 
and small governmental jurisdictions.
    For purposes of assessing the impacts of today's proposed 
amendments on small entities, a small entity is defined as: (1) A small 
business ranging from up to 500 employees to up to 1,000 employees, 
depending on the NAICS code; (2) a small governmental jurisdiction that 
is a government of a city, county, town, school district, or special 
district with a population of less than 50,000; or (3) a small 
organization that is any not-for-profit enterprise that is 
independently owned and operated and is not dominant in its field. The 
maximum number of employees to be considered a small business for each 
NAICS code is shown in the preamble to the proposed rule (67 FR 16178).
    After considering the economic impacts of this proposed rule on 
small entities, I certify that this action will not have a significant 
economic impact on a substantial number of small entities. In 
determining whether a rule has a significant economic impact on a 
substantial number of small entities, the impact of concern is any 
significant adverse economic impact on small entities, since the 
primary purpose of the regulatory flexibility analyses is to identify 
and address regulatory alternatives ``which minimize any significant 
economic impact of the rule on small entities.'' 5 U.S.C. 603 and 604. 
Thus, an agency may certify that a rule will not have a significant 
economic impact on a substantial number of small entities if the rule 
relieves regulatory burden, or otherwise has a positive economic effect 
on all of the small entities subject to the rule.
    The proposed amendments include an additional compliance option for 
wastewater tanks that provide small entities with greater flexibility 
to comply with the standards. We have therefore concluded that this 
proposed rule amendments will relieve regulatory burden for all 
affected small entities.
    We continue to be interested in the potential impacts of the 
proposed rule on small entities and welcome comments on issues related 
to such impacts.

D. Unfunded Mandates Reform Act

    Title II of the Unfunded Mandates Reform Act of 1995 (UMRA), Public 
Law 104-4, establishes requirements for Federal agencies to assess the 
effects of their regulatory actions on State, local, and tribal 
governments and the private sector. Under section 202 of the UMRA, EPA 
generally must prepare a written statement, including a cost-benefit 
analysis, for proposed and final rules with ``Federal mandates'' that 
may result in expenditures to State, local, and tribal governments, in 
the aggregate, or to the private sector, of $100 million or more in any 
one year. Before promulgating an EPA rule for which a written statement 
is needed, section 205 of the UMRA generally requires us to identify 
and consider a reasonable number of regulatory alternatives and adopt 
the least costly, most cost-effective, or least burdensome

[[Page 45677]]

alternative that achieves the objectives of the rule. The provisions of 
section 205 do not apply when they are inconsistent with applicable 
law. Moreover, section 205 allows EPA to adopt an alternative other 
than the least costly, most cost-effective, or least burdensome 
alternative if the Administrator publishes with the final rule an 
explanation why that alternative was not adopted. Before EPA 
establishes any regulatory requirements that may significantly or 
uniquely affect small governments, including tribal governments, we 
must have developed under section 203 of the UMRA a small government 
agency plan. The plan must provide for notifying potentially affected 
small governments, enabling officials of affected small governments to 
have meaningful and timely input in the development of EPA regulatory 
proposals with significant Federal intergovernmental mandates, and 
informing, educating, and advising small governments on compliance with 
the regulatory requirements.
    EPA has determined that this rule does not contain a Federal 
mandate that may result in expenditures of $100 million or more for 
State, local, and tribal governments, in the aggregate, or the private 
sector in any one year. This action clarifies and corrects technical 
inconsistencies that have been discovered. Thus, this rule is not 
subject to the requirements of sections 202 and 205 of the UMRA.
    EPA has determined that this rule contains no regulatory 
requirements that might significantly or uniquely affect small 
governments. These rule amendments clarify and correct technical 
inconsistencies, thus, should not affect small governments.

E. Executive Order 13132: Federalism

    Executive Order 13132, entitled ``Federalism'' (64 FR 43255, August 
10, 1999), requires EPA to develop an accountable process to ensure 
``meaningful and timely input by State and local officials in the 
development of regulatory policies that have federalism implications.'' 
``Policies that have federalism implications'' is defined in the 
Executive Order to include regulations that have ``substantial direct 
effects on the States, on the relationship between the national 
government and the States, or on the distribution of power and 
responsibilities among the various levels of government.''
    This proposed rule does not have federalism implications. It will 
not have substantial direct effects on the States, on the relationship 
between the national government and the States, or on the distribution 
of power and responsibilities among the various levels of government, 
as specified in Executive Order 13132. None of the affected facilities 
are owned or operated by State or local governments. Thus, Executive 
Order 13132 does not apply to this rule.
    In the spirit of Executive Order 13132, and consistent with EPA 
policy to promote communications between EPA and State and local 
governments, EPA specifically solicits comment on this proposed rule 
from State and local officials.

F. Executive Order 13175: Consultation and Coordination With Indian 
Tribal Governments

    Executive Order 13175, entitled ``Consultation and Coordination 
with Indian Tribal Governments'' (65 FR 67249, November 9, 2000), 
requires EPA to develop an accountable process to ensure ``meaningful 
and timely input by tribal officials in the development of regulatory 
policies that have tribal implications.'' This proposed rule does not 
have tribal implications, as specified in Executive Order 13175. The 
proposed rule amendments provide an owner or operator with an 
additional option for complying with the emission limits and other 
requirements in the rule. Thus, Executive Order 13175 does not apply to 
the proposed rule amendments.
    EPA specifically solicits additional comment on this proposed rule 
from tribal officials.

G. Executive Order 13045: Protection of Children From Environmental 
Health Risks and Safety Risks

    EPA interprets Executive Order 13045 (62 FR 19885, April 23, 1997) 
as applying to those regulatory actions that concern health or safety 
risks, such that the analysis required under section 5-501 of the 
Executive Order has the potential to influence the regulation. This 
action is not subject to Executive Order 13045 because it is based 
solely on technology performance.

H. Executive Order 13211: Actions Concerning Regulations That 
Significantly Affect Energy Supply, Distribution, or Use

    This rule is not subject to Executive Order 13211, ``Actions 
Concerning Regulations That Significantly Affect Energy Supply, 
Distribution, or Use'' (66 FR 28355, May 22, 2001) because it is not a 
significant regulatory action under Executive Order 12866.

I. National Technology Transfer and Advancement Act

    Section 12(d) of the National Technology Transfer and Advancement 
Act (NTTAA), Public Law No. 104-113, (15 U.S.C. 272 note) directs EPA 
to use voluntary consensus standards (VCS) in its regulatory activities 
unless to do so would be inconsistent with applicable law or otherwise 
impractical. VCS are technical standards (e.g. , materials 
specifications, test methods, sampling procedures, and business 
practices) that are developed or adopted by VCS bodies. NTTAA directs 
EPA to provide Congress, through OMB, explanations when the Agency 
decides not to use available and applicable VCS.
    This proposed rule does not involve technical standards. Therefore, 
EPA is not considering the use of any VCS.

J. Executive Order 12898: Federal Actions To Address Environmental 
Justice in Minority Populations and Low-Income Populations

    Executive Order 12898 (59 FR 7629, February 16, 1994) establishes 
Federal executive policy on environmental justice. Its main provision 
directs Federal agencies, to the greatest extent practicable and 
permitted by law, to make environmental justice part of their mission 
by identifying and addressing, as appropriate, disproportionately high 
and adverse human health or environmental effects of their programs, 
policies, and activities on minority populations and low-income 
populations in the United States.
    EPA has determined that this proposed rule will not have 
disproportionately high and adverse human health or environmental 
effects on minority or low-income populations because they do not 
affect the level of protection provided to human health or the 
environment. The proposed rule amendments do not relax the control 
measures on sources regulated by the rule and, therefore, will not 
cause emissions increases from these sources.

List of Subjects in 40 CFR Part 63

    Environmental protection, Administrative practice and procedure, 
Air pollution control, Hazardous substances, Intergovernmental 
relations, Reporting and recordkeeping requirements.

    Dated: July 31, 2008.
Stephen L. Johnson,
Administrator.

    For the reasons stated in the preamble, title 40, chapter I, part 
63 of the Code of the Federal Regulations is proposed to be amended as 
follows:

PART 63--[AMENDED]

    1. The authority citation for part 63 continues to read as follows:

    Authority: 42 U.S.C. 7401, et seq.

[[Page 45678]]

Subpart G--[Amended]

    2. Section 63.133 is amended by adding paragraph (b)(1)(iii) to 
read as follows:


Sec.  63.133  Process wastewater provisions--Wastewater tanks.

* * * * *
    (b) * * *
    (1) * * *
    (iii) If the fixed-roof and closed-vent system is operated such 
that a negative pressure is maintained at each opening in the fixed 
roof, then paragraph (b)(1)(ii) of this section does not apply. Under 
representative conditions, demonstrate initially and annually that each 
opening is maintained at negative pressure as specified in Sec.  
63.457(e). For a range of operating conditions, the owner or operator 
shall comply with Sec.  63.145(a)(4)(i).
* * * * *

Subpart FFFF--[Amended]

    3. Section 63.2450 is amended by revising paragraph (o) to read as 
follows:


Sec.  63.2450   What are my general requirements for complying with 
this subpart?

* * * * *
    (o) You may not use a flare to control halogenated vent streams or 
hydrogen halide and halogen HAP emissions to comply with Table 3.
* * * * *
    4. Section 63.2460 is amended by revising paragraph (a) and the 
first sentence in paragraph (c)(2)(v) to read as follows:


Sec.  63.2460   What requirements must I meet for batch process vents?

    (a) You must meet each emission limit, or combination thereof, in 
Table 2 to this subpart that applies to you, and you must meet each 
applicable requirement specified in paragraphs (b) and (c) of this 
section.
* * * * *
    (c) * * *
    (2) * * *
    (v) If a process condenser is used for boiling operations in which 
a HAP (not as an impurity) is heated to the boiling point, you must 
demonstrate that it is properly operated according to the procedures 
specified in Sec.  63.1257(d)(2)(i)(C)(4) and (d)(3)(iii)(B), and the 
demonstration must occur only during the boiling operation.* * *
* * * * *
    5. Section 63.2465 is amended by revising paragraph (b) to read as 
follows:


Sec.  63.2465   What requirements must I meet for process vents that 
emit hydrogen halide and halogen HAP or HAP metals?

* * * * *
    (b) If any process vents within the process contain greater than 20 
parts per million by volume (ppmv) hydrogen halide or halogen HAP, you 
must determine and sum the uncontrolled hydrogen halide and halogen HAP 
emissions from each of the process vents within the process using 
procedures specified in Sec.  63.1257(d)(2)(i) and (ii).
* * * * *
    6. Section 63.2470 is amended by adding new paragraph (c)(3) to 
read as follows:


Sec.  63.2470   What requirements must I meet for storage tanks?

* * * * *
    (c) * * *
    (3) For nonregenerative carbon adsorbers, you may choose to comply 
with the monitoring requirements in Sec.  63.1258(b)(v) in lieu of 
Sec.  63.995(c).
* * * * *
    7. Section 63.2485 is amended by revising the first sentence in 
paragraph (n)(1) to read as follows:


Sec.  63.2485   What requirements must I meet for wastewater streams 
and liquid streams in open systems within an MCPU?

* * * * *
    (n) * * *
    (1) Wastewater must be hard-piped between the equalization unit, 
neutralization unit, clarifier, and activated sludge unit.* * *
* * * * *
    8. Section 63.2520 is amended by revising paragraph (c)(2) to read 
as follows:


Sec.  63.2520   What reports must I submit and when?

* * * * *
    (c) * * *
    (2) Descriptions of daily or per batch demonstrations to verify 
that control devices subject to Sec.  63.2450(k)(6) are operated as 
designed.
* * * * *
    9. Section 63.2550 is amended in paragraph (i) as follows:
    a. Adding a new definition for the term ``Bench-scale process'' in 
alphabetical order;
    b. Revising paragraph (6) to the definition for ``Miscellaneous 
organic chemical manufacturing process''.


Sec.  63.2550   What definitions apply to this subpart?

* * * * *
    (i) * * *
    Bench-scale process means a batch process (other than a research 
and development facility) that is operated on a small scale, such as 
one capable of being located on a laboratory bench top. This bench-
scale equipment will typically include reagent feed vessels, a small 
reactor and associated product separator, recovery and holding 
equipment. These processes are only capable of producing small 
quantities of product.
* * * * *
    Miscellaneous organic chemical manufacturing process
* * * * *
    (6) The end of a process that produces a solid material is either 
up to and including the dryer or extruder, or for a polymer production 
process without a dryer or extruder, it is up to and including the die 
plate or solid-state reactor, except in two cases. If the dryer, 
extruder, die plate, or solid-state reactor is followed by an operation 
that is designed and operated to remove HAP solvent or residual HAP 
monomer from the solid, then the solvent removal operation is the last 
step in the process. If the dried solid is diluted or mixed with a HAP-
based solvent, then the solvent removal operation is the last step in 
the process.
* * * * *

Table 6 to Subpart FFFF of Part 63--[Amended]

    10. Table 6 to subpart FFFF of part 63 is amended by removing entry 
2.

Table 7 to Subpart FFFF of Part 63--[Amended]

    11. Table 7 to subpart FFFF of part 63 is amended by revising entry 
3 to read as follows:
* * * * *

Table 7--To Subpart FFFF of Part 63--Requirements for Wastewater Streams
            and Liquid Streams in Open Systems Within an MCPU
                              * * * * * * *
------------------------------------------------------------------------
          For each . . .                       You must . . .
------------------------------------------------------------------------
 

[[Page 45679]]

 
                              * * * * * * *
3. Liquid streams in an open        Comply with the requirements in Sec.
 system within an MCPU.                63.149 and the requirements
                                     referenced therein, except as
                                     specified in Sec.   63.2485. You
                                     may comply with the requirements in
                                     Sec.   63.133(b)(1)(ii) for tanks.
------------------------------------------------------------------------

[FR Doc. E8-18142 Filed 8-5-08; 8:45 am]
BILLING CODE 6560-50-P