[Federal Register Volume 70, Number 26 (Wednesday, February 9, 2005)]
[Rules and Regulations]
[Pages 6930-6973]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 05-2308]



[[Page 6929]]

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Part II





Environmental Protection Agency





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40 CFR Part 63



National Emission Standards for Hazardous Air Pollutants for Petroleum 
Refineries: Catalytic Cracking Units, Catalytic Reforming Units, and 
Sulfur Recovery Units; Final Rule and Proposed Rule

Federal Register / Vol. 70, No. 26 / Wednesday, February 9, 2005 / 
Rules and Regulations

[[Page 6930]]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 63

[OAR-2002-0033; AD-FRL-7969-9]
RIN 2060-AK51


National Emission Standards for Hazardous Air Pollutants for 
Petroleum Refineries: Catalytic Cracking Units, Catalytic Reforming 
Units, and Sulfur Recovery Units

AGENCY: Environmental Protection Agency (EPA).

ACTION: Direct final rule; amendments.

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SUMMARY: On April 11, 2002, pursuant to section 112 of the Clean Air 
Act (CAA), the EPA issued national emission standards to control 
hazardous air pollutants emitted from catalytic cracking units, 
catalytic reforming units, and sulfur recovery units at petroleum 
refineries. This action promulgates amendments to several sections of 
the existing standards. The amendments will change the affected source 
designations and add new compliance options for catalytic reforming 
units that use different types of emission control systems, new 
monitoring alternatives for catalytic cracking units and catalytic 
reforming units, and a new procedure for determining the metal or total 
chloride concentration on catalyst particles. The amendments will also 
defer technical requirements for most continuous parameter monitoring 
systems, clarify testing and monitoring requirements, and make 
editorial corrections.

DATES: The final amendments will be effective on April 11, 2005, unless 
we receive significant adverse comments by March 11, 2005, or by March 
28, 2005 if a public hearing is requested. If such comments are 
received, we will publish a timely withdrawal in the Federal Register 
indicating which amendments, paragraph, or section will become 
effective and which amendments, paragraph, or section are being 
withdrawn due to adverse comment. Any distinct amendment, paragraph, or 
section of the direct final amendments for which we do not receive 
adverse comment will become effective on April 11, 2005.

ADDRESSES: Comments. Submit your comments, identified by Docket ID No. 
OAR-2002-0033, by one of the following methods:
    <bullet> Federal eRulemaking Portal: http://www.regulations.gov. 
Follow the on-line instructions for submitting comments.
    <bullet> Agency Web site: http://www.epa.gov/edocket. EDOCKET, 
EPA's electronic public docket and comment system, is EPA's preferred 
method for receiving comments. Follow the on-line instructions for 
submitting comments.
    <bullet> E-mail: <a href="/cdn-cgi/l/email-protection#1f7e327e717b326d327b707c747a6b5f7a6f7e31787069"><span class="__cf_email__" data-cfemail="cbaae6aaa5afe6b9e6afa4a8a0aebf8baebbaae5aca4bd">[email protected]</span></a>.
    <bullet> Fax: (202) 566-1741.
    <bullet> Mail: National Emission Standards for Hazardous Air 
Pollutants (NESHAP) for Petroleum Refineries: Catalytic Cracking Units, 
Catalytic Reforming Units, and Sulfur Recovery Units Docket, 
Environmental Protection Agency, Mailcode: 6102T, 1200 Pennsylvania 
Ave., NW., Washington, DC 20460. Please include a total of two copies.
    <bullet> Hand Delivery: Environmental Protection Agency, 1301 
Constitution Avenue, NW., Room B102, Washington, DC 20460. Such 
deliveries are only accepted during the Docket's normal hours of 
operation, and special arrangements should be made for deliveries of 
boxed information.
    Instructions: Direct your comments to Docket ID No. OAR-2002-0033. 
The EPA's policy is that all comments received will be included in the 
public docket without change and may be made available online at http://www.epa.gov/edocket, 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 EDOCKET, regulations.gov, or e-
mail. The EPA EDOCKET and the Federal regulations.gov Web sites are 
``anonymous access'' systems, 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 EDOCKET or 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.
    Docket: All documents in the docket are listed in the EDOCKET index 
at http://www.epa.gov/edocket. Although listed in the index, some 
information is not publicly available, i.e., CBI or other information 
whose disclosure is restricted by statute. Certain other information, 
such as copyrighted materials, is not placed on the Internet and will 
be publicly available only in hard copy form. Publicly available docket 
materials are available either electronically in EDOCKET or in hard 
copy form in Docket ID No. OAR-2002-0033 (or A-97-36), EPA/DC, EPA 
West, Room B102, 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 
Docket is (202) 566-1742.

FOR FURTHER INFORMATION CONTACT: Mr. Robert B. Lucas, Emission 
Standards Division (C439-03), Office of Air Quality Planning and 
Standards, Environmental Protection Agency, Research Triangle Park, NC 
27711, telephone number (919) 541-0884, fax number (919) 541-3470, e-
mail address: <a href="/cdn-cgi/l/email-protection#c4a8b1a7a5b7eaa6aba684a1b4a5eaa3abb2"><span class="__cf_email__" data-cfemail="aac6dfc9cbd984c8c5c8eacfdacb84cdc5dc">[email protected]</span></a>.

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

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                                                         Examples of
             Category                NAICS code\1\   regulated entities
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Industry..........................           32411  Petroleum refineries
                                                     that operate
                                                     catalytic cracking
                                                     units, catalytic
                                                     reforming units, or
                                                     sulfur recovery
                                                     units.
Federal government................  ..............  Not affected.
State/local/tribal government.....  ..............  Not affected.
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\1\ North American Industry Classification System.


[[Page 6931]]

    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 40 CFR 63.1561 of the 
NESHAP for petroleum refineries: Catalytic cracking units, catalytic 
reforming units, and sulfur recovery units. If you have questions 
regarding the applicability of this action to a particular entity, 
consult the contact person listed in the preceding FOR FURTHER 
INFORMATION CONTACT section.
    Worldwide Web (WWW). In addition to being available in the docket, 
an electronic copy of today's direct final rule amendments will also be 
available on the Worldwide Web (WWW) through the Technology Transfer 
Network (TTN). Following the Administrator's signature, a copy of the 
direct final rule amendments will be placed 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. If more information 
regarding the TTN is needed, call the TTN HELP line at (919) 541-5384.
    Judicial Review. Under section 307(b)(1) of the CAA, judicial 
review of the direct final amendments is available only by filing a 
petition for review in the U.S. Court of Appeals for the District of 
Columbia Circuit by April 11, 2005. Under section 307(d)(7)(B) of the 
CAA, only an objection to the final amendments that was raised with 
reasonable specificity during the period for public comment can be 
raised during judicial review. Moreover, under section 307(b)(2) of the 
CAA, the requirements established by the final amendments may not be 
challenged separately in any civil or criminal proceedings brought by 
the EPA to enforce these requirements.
    Comments. We are publishing the amendments as a direct final rule 
without prior proposal because we view the amendments as 
noncontroversial and do not anticipate adverse comments. However, in 
the Proposed Rules section of this Federal Register, we are publishing 
a separate document that will serve as the proposal for the amendments 
contained in this direct final rule in the event that significant 
adverse comments are filed. If we receive any significant adverse 
comments on one or more distinct amendments, we will publish a timely 
withdrawal in the Federal Register informing the public which 
provisions will become effective and which provisions are being 
withdrawn due to adverse comment. We will address all public comments 
in a subsequent final rule based on the proposed rule. We will not 
institute a second comment period on this direct final rule. Any 
parties interested in commenting must do so at this time.
    Outline. The information presented in this preamble is organized as 
follows:

I. Background
II. Summary of the Direct Final Rule Amendments
    A. How are we changing the affected source designations?
    B. How are we changing the testing and monitoring requirements 
for catalytic cracking units?
    C. What new procedure is available for determining the metal or 
total chloride concentration on catalyst particles?
    D. What new alternative is available for calculating the 
volumetric flow rate of exhaust gases from catalytic cracking units?
    E. What new monitoring alternative is available for a catalytic 
cracking unit with a wet scrubber if the unit is subject to the new 
source performance standards for petroleum refineries?
    F. How are we clarifying the emission limitations for catalytic 
reforming units?
    G. How are we changing the monitoring requirements for catalytic 
reforming units?
    H. What new options are available for a catalytic reforming unit 
with an internal scrubbing system?
    I. What new options are available for a catalytic reforming unit 
with a different type of control system?
    J. How are we changing the requirements for continuous parameter 
monitoring systems?
    K. What corrections are we making?
III. Summary of Non-Air Health, Environmental, Energy, and Cost 
Impacts
IV. 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 & Safety Risks
    H. Executive Order 13211: Actions That Significantly Affect 
Energy Supply, Distribution, or Use
    I. National Technology Transfer Advancement Act
    J. Congressional Review Act

I. Background

    On April 11, 2002 (67 FR 17762), we issued the national emission 
standards for hazardous air pollutants (NESHAP) for catalytic cracking 
units (CCU), catalytic reforming units (CRU), and sulfur recovery units 
(SRU) at petroleum refineries (40 CFR part 63, subpart UUU). The NESHAP 
establish emissions limits for hazardous air pollutants (HAP) emitted 
from vents on the three types of process units, as well as work 
practice standards for by-pass lines. The NESHAP implement section 
112(d) of the CAA by requiring all petroleum refineries that are major 
sources to meet standards reflecting the application of the maximum 
achievable control technology (MACT).
    After publication of the NESHAP, two industry trade associations 
and various individual refineries raised issues and questions regarding 
the applicability of the NESHAP and the technical requirements for 
installation, operation, and maintenance of continuous parameter 
monitoring systems (CPMS). The industry representatives and a control 
technology manufacturer also requested that we clarify the requirements 
for CRU depressurizing and purging, add more compliance provisions for 
CRU with internal scrubbing systems, and include new provisions for CRU 
that use emission control technologies other than scrubbers. The 
industry representatives also requested clarification of various 
performance testing and monitoring provisions. Other questions were 
raised at an implementation workshop held in January 2003. Today's 
direct final rule amendments respond to the issues raised since 
promulgation and will reduce compliance uncertainties, encourage the 
use of new control technologies, and improve understanding of the 
NESHAP requirements.
    In addition, since publication of the NESHAP, we have identified a 
number of minor technical and editorial errors requiring correction. 
Rather than publish a separate notice of corrections, we are including 
those changes along with the amendments.

II. Summary of the Direct Final Rule Amendments

A. How Are We Changing the Affected Source Designations?

    One of the issues raised by the industry representatives concerns 
the language in 40 CFR 63.1562 where we identified the affected sources 
as each CCU that regenerates catalyst, each CRU that regenerates 
catalyst, and each SRU and the tail gas treatment unit serving it. In 
designating the affected source as the unit rather than the vent or 
group of vents on the unit (as originally proposed), we inadvertently 
made the NESHAP more stringent for some facilities, and these 
facilities did not have an opportunity to comment on the change. 
Therefore, we are revising the designation of affected sources to be

[[Page 6932]]

more consistent with the rule as proposed. The direct final rule 
amendments define the process unit affected sources as:
    <bullet> The process vent or group of process vents on fluidized 
CCU units that is associated with regeneration of the catalyst used in 
the unit (i.e., the catalyst regeneration flue gas vent).
    <bullet> The process vent or group of process vents on CRU 
(including but not limited to semi-regenerative, cyclic, or continuous 
processes), that is associated with regeneration of the catalyst used 
in the unit. This affected source includes vents that are used during 
the unit depressurization, purging, coke burn, and catalyst 
rejuvenation.
    <bullet> The process vent or group of process vents on Claus or 
other types of sulfur recovery plant units or the tail gas treatment 
units serving sulfur recovery plants that is associated with sulfur 
recovery.

B. How Are We Changing the Testing and Monitoring Requirements for 
Catalytic Cracking Units?

    The initial compliance provisions in 40 CFR 63.1564(b)(1) require 
the owner or operator to install, operate, and maintain a CPMS 
according to the requirements in 40 CFR 63.1572 and Table 3 to subpart 
UUU. Facilities that are not subject to the new source performance 
standards (NSPS) for petroleum refineries and that elect to meet the 
particulate matter (PM) or nickel (Ni) limit in the NESHAP are required 
to monitor the gas flow rate to a wet scrubber. After promulgation, 
industry representatives recommended that we revise the CCU monitoring 
requirements to allow gas flow rate measurements before or after the 
control device. The direct final rule amendments revise the 
requirements in Table 3 to subpart UUU to allow measurement of the gas 
flow rate entering or exiting the control device. This change will 
improve implementation of the NESHAP and avoid unnecessary costs of 
changing current practices. The direct final rule amendments also 
revise the footnotes to Tables 3 and 7 to subpart UUU to change the 
citation for the alternative method for determining gas flow rate from 
40 CFR 63.1573(a) to 40 CFR 63.1573(a)(1) to accommodate the new 
alternative for calculating the volumetric flow rate of exhaust gases 
when computing the PM emissions rate.
    The initial compliance provisions in 40 CFR 63.1564(b)(2) require 
the owner or operator to conduct a performance test for certain CCU 
according to the requirements in Table 4 to subpart UUU. After 
promulgation, industry representatives recommended that we delete the 
sampling rate requirements cited for EPA Method 29 (40 CFR part 60, 
appendix A). According to the commenters, the sampling rate requirement 
is unnecessary because the method already includes appropriate sampling 
requirements. We agree and have deleted the 0.028 dry standard cubic 
meters per minute (dscm/min)/0.74 dry standard cubic feet per minute 
(dscf/min) sampling rate requirement from Table 4 to subpart UUU.

C. What New Procedure Is Available for Determining the Metal or Total 
Chloride Concentration on Catalyst Particles?

    The owner or operator of a CCU subject to a Ni limit for inorganic 
HAP emissions must determine the equilibrium catalyst (E-cat) Ni 
concentration value during the initial performance test and at frequent 
intervals afterward for monitoring requirements. Several methods are 
currently used within the industry for this purpose and are referenced 
in the NESHAP, as well as any alternative method satisfactory to the 
Administrator. Industry experts and vendors recommended that the NESHAP 
allow a new procedure that was not fully developed at the time the 
NESHAP were promulgated. The direct final rule amendments add the new 
procedure, ``Determination of Metal Concentration on Catalyst Particles 
(Instrumental Analyzer Procedure)'' to appendix A of subpart UUU. This 
procedure can be used to analyze catalyst particles (Ni compounds and 
total chlorides) from CCU, CRU, and other processes specified within 
EPA regulations. The direct final rule amendments revise Table 4 to 
subpart UUU to reference the new procedure.

D. What New Alternative is Available for Calculating the Volumetric 
Flow Rate of Exhaust Gases From Catalytic Cracking Units?

    The initial compliance provisions in 40 CFR 63.1564(b)(4) require 
the owner or operator of a CCU subject to the PM limit in the NSPS for 
petroleum refineries to compute the PM emission rate using Equation 1 
of 40 CFR 63.1564. This calculation requires measurement of the 
volumetric flow rate of exhaust gas from the catalyst regenerator 
(``Q<INF>r</INF>''). The direct final rule amendments revise the 
definition of ``Q<INF>r</INF>'' to refer to a new alternative procedure 
in 40 CFR 63.1573(a)(2) that can be used to determine the volumetric 
flow rate of exhaust gas. This procedure can be used by plants that 
have a gas analyzer installed in the catalytic cracking regenerator 
exhaust vent prior to the addition of air or other gas streams. The new 
alternative allows measurement of the flow rate after an electrostatic 
precipitator, but requires measurement of the flow rate before a carbon 
monoxide boiler.

E. What New Monitoring Alternative is Available for a Catalytic 
Cracking Unit With a Wet Scrubber if the Unit Is Subject to the New 
Source Performance Standards for Petroleum Refineries?

    The NSPS for petroleum refineries (40 CFR part 60, subpart J) 
require a continuous opacity monitoring system (COMS) for a fluidized 
CCU to demonstrate continuous compliance with the opacity limit in 40 
CFR 60.102(a)(2). Subpart UUU requires facilities that are already 
subject to the NSPS to meet the NSPS requirements, including the 
opacity limit and COMS requirements.
    Technical experience has shown that COMS are not feasible for wet 
scrubber PM control systems. We have already acknowledged the technical 
problems associated with the use of COMS on wet scrubbers by requiring 
other monitoring methods (CPMS for pressure drop and liquid-to-gas 
ratio). However, these requirements apply under other compliance 
options and not to CCU already subject to the NSPS.
    Some facilities with CCU subject to the NSPS use wet scrubbers to 
meet the PM limit and already have alternative monitoring requirements 
approved under the NSPS. For these reasons, one industry representative 
requested that the NESHAP accept alternative monitoring requirements 
that have already been approved under the NSPS. Therefore, we are 
adding a new paragraph (f) to 40 CFR 63.1573 to provide for use of the 
approved alternative under subpart UUU.
    Monitoring alternatives for CCU subject to the NSPS that have 
already been approved may not meet the criteria for MACT standards. For 
example, the alternative may not include provisions for demonstrating 
continuous compliance such as meeting an operating limit, collecting 
and reducing monitoring data, and recordkeeping/reporting requirements. 
While we cannot automatically approve an alternative that we have not 
seen, we see no reason to require a second formal approval process for 
the same control system and emission limit. To this end, we have added 
procedures for requesting alternative requirements specific to this 
situation.
    We are requiring that an owner or operator submit a copy of the 
approved alternative monitoring method in the notification of 
compliance status (or

[[Page 6933]]

before), along with a brief description of the continuous monitoring 
system, the applicable operating limit, and the continuous compliance 
requirements. We will contact you within 30 calendar days after 
receipt, to tell you if the alternative is approved. This alternative 
does not eliminate your responsibility to comply with the opacity 
limit, which would remain applicable for enforcement purposes. This 
option is not available to facilities that elect to comply with the 
NSPS requirements in subpart UUU. These facilities must request an 
alternative monitoring method under the procedures in 40 CFR 63.8(f).

F. How Are we Clarifying the Emission Limitations for Catalytic 
Reforming Units?

    The requirements for organic HAP emissions in 40 CFR 63.1566(a)(3) 
state that the CRU emissions and operating limits in Tables 15 and 16 
to subpart UUU apply to emissions from process vents that occur during 
depressuring and purging operations. The NESHAP specify in 40 CFR 
63.1566(a)(4) that the limits do not apply to depressurizing and 
purging operations when the reactor vent pressure is 5 pounds per 
square inch (psig) or less. Applicable process vents include those used 
during unit depressurization, purging, coke burn, catalyst 
rejuvenation, and reduction or activation purge. Industry 
representatives noted the current language is unclear as to whether the 
limits apply only to the initial depressurization cycle or include 
subsequent depressuring and purging cycles when the reactor pressure is 
greater than 5 psig. In response, we are amending 40 CFR 63.1566(a)(3) 
to clarify our intent regarding the control of organic HAP emissions 
from CRU depressurizing and purging.
    Our intent in the NESHAP was that the organic HAP requirements 
apply to the initial depressuring and catalyst purging operations that 
occur prior to coke burn-off. Organic HAP emissions are expected during 
the initial depressurization and catalyst purge cycles. No additional 
organic HAP emission controls are used during coke burn-off, beyond the 
combustion process inherent during this process, and our data indicate 
there are minimal organic emissions from coke burn-off and subsequent 
CRU regeneration cycle purges.
    Industry representatives suggested that we limit the applicability 
of the emissions limit to only the initial depressuring and first 
nitrogen purge. We do expect that, after some number of purges, the HAP 
concentration in the purge may be less than the required outlet HAP 
concentration from a combustion control device. Under the NESHAP, all 
purges greater than 5 psig go to a combustion control device (or 
equivalent combustion device), regardless of the HAP concentration in 
the affected stream.
    Initially, we attempted to specify the number of purges to be 
controlled because the organic HAP emissions would generally be very 
low beyond the first or second purge. However, our information 
indicates that the purging processes vary widely (e.g., different 
systems use different purge gases, different purge temperatures, and 
different amounts of purge gas per unit of catalyst). Consequently, 
specifying the number of purges that must be controlled does not 
necessarily reflect a performance level. Additionally, recent data show 
that, for some CRU purge conditions, subsequent purges after the 
initial nitrogen purge may contain substantial amounts of benzene--on 
the order of 100 parts per million by volume (ppmv), which translates 
to emissions of about 1 ton per year (tpy). For other process purging 
conditions, however, subsequent purges have very low levels of HAP. We 
concluded that mandating specific purging conditions would reduce 
operator flexibility and would make compliance, for certain CRU 
processes, to be technically infeasible. We decided, therefore, to 
clarify that uncontrolled purging operations greater than 5 psig are 
acceptable if the total organic carbon (TOC) concentration is less than 
the currently required outlet concentration of a combustion control 
device (i.e., less than 20 ppmv), and to provide compliance options for 
these purges.
    Furthermore, the background information supporting the performance 
achievable by a combustion control device indicates that the 20 ppmv 
emissions limit was established ``by compound exit concentration'' 
rather than by a specified indicator of TOC, such as propane. As the 
primary HAP of concern from these CRU depressuring and purging vents is 
benzene, it is more appropriate to establish the 20 ppmv emission limit 
as hexane (i.e., a C<INF>6</INF> hydrocarbon) rather than as propane. 
We are, therefore, changing the CRU TOC concentration requirements 
(which are used as a surrogate for organic HAP) to 20 ppmv TOC or 
nonmethane TOC (dry basis as hexane), corrected to 3 percent oxygen. 
This applies to both the concentration limit for the control device and 
the concentration limit for emissions discharged directly to the 
atmosphere.
    This approach adds compliance options for ``uncontrolled'' purging 
cycles that are greater than 5 psig and less than 20 ppmv TOC (dry 
basis as hexane). First, the purging conditions used by the plant to 
remove organic HAP from the CRU catalyst during controlled purges prior 
to direct release to the atmosphere must be specified in the operation, 
maintenance, and monitoring plan. An initial performance test is 
conducted on the first directly released catalyst purge (following the 
purging conditions specified in the plan) to demonstrate that the 
purges specified in the plan effectively achieve the required emission 
limit. Subsequently, adherence to the purging procedures as specified 
in the plan is used to demonstrate continuous compliance.
    Industry representatives also requested that we clarify the 
emission limits for organic HAP emissions from CRU in 40 CFR 63.1567(a) 
to indicate which limits apply when different reactors in the CRU are 
regenerated in separate regeneration systems. The direct final rule 
amendments state that, in this case, the emission limits in Table 22 to 
subpart UUU apply to each separate regeneration system. The direct 
final rule amendments also clarify that the TOC outlet concentration 
limit is 20 ppmv dry basis as hexane.
    In response to industry comments, we expanded the number of test 
methods that can be use to measure organic HAP emissions. For the 98 
percent mass emission reduction standard, you can use EPA Method 25 in 
40 CFR part 60, appendix A, to directly measure nonmethane TOC as 
carbon or the combination of EPA Methods 25A and 18 in 40 CFR part 60, 
appendix A, to determine nonmethane TOC emissions. If the outlet TOC 
concentration is expected to be less than 50 ppmv (as carbon), you can 
use EPA Method 25A to measure the TOC concentration as hexane. For the 
20 ppmv concentration limit, you can measure the TOC concentration 
using EPA Method 25A or determine the nonmethane TOC concentration 
using the combination of Methods 25A and 18. We made changes to the 
equations in 40 CFR 63.1564 and relevant tables to make these 
distinctions. We also added a definition of ``nonmethane TOC'' to 40 
CFR 63.1579.
    The direct final rule amendments also clarify the inorganic HAP 
emission and operating limits to indicate that the requirements apply 
to each applicable CRU process vent during coke burn-off and catalyst 
rejuvenation. In response to industry comments, we are also changing 
the compliance equations in

[[Page 6934]]

40 CFR 63.1567 to allow for hydrogen chloride (HCl) measurements below 
detectable limits of the method after correction for oxygen content.

G. How Are we Changing the Monitoring Requirements for Catalytic 
Reforming Units?

    The NESHAP allow plants to measure and record the pH of the water 
(or scrubbing liquid) exiting the scrubber at least once an hour as an 
alternative to a pH CPMS. After promulgation, industry representatives 
recommended that we allow alkalinity measurements as an alternative to 
pH. Alkalinity measurements are more reliable because they give the 
actual acid content of the water (or scrubbing liquid) while pH 
measurements indicate only how much (more or less) acid is needed. We 
agree and have changed 40 CFR 63.1573(b) to allow plants to measure and 
record the alkalinity of the water (or scrubbing liquid) exiting the 
wet scrubber at least once an hour during coke burn-off and catalyst 
rejuvenation using titration as an alternative to a CPMS. We have also 
changed Tables 23, 24, 25, and 28 to subpart UUU to include the 
alternative for alkalinity measurements. In response to industry 
comments, we have also allowed the pH alternative to apply to CRU 
meeting the HCl percent reduction standard.
    The NESHAP allow plants to measure the catalytic regenerator 
exhaust gas flow rate from a CCU as an approved alternative to a CPMS 
if the unit does not introduce any other gas streams into the catalyst 
regeneration vent (i.e., complete combustion units with no additional 
combustion devices). In response to industry comments, we have expanded 
the alternative in 40 CFR 63.1573(a) to apply to CRU that operate as a 
constant pressure system during the coke burn and rejuvenation cycles.
    After promulgation, industry representatives recommended that we 
also expand the CRU monitoring requirements to allow gas flow rate 
measurements before or after the control device. We agree and have 
changed Tables 24 and 25 of subpart UUU accordingly.
    In response to questions raised at implementation workshops for 
plant personnel, we have added provisions to the performance test 
requirements for CRU to reflect differences among semi-regenerative, 
cyclic, and continuous processes. The direct final rule amendments 
require plants to test semi-regenerative and cyclic units during the 
coke burn-off and catalyst rejuvenation cycle. However, the tests 
cannot be done during the first hour or the last 6 hours of the cycle 
for a semi-regenerative unit, or during the first hour or the last 2 
hours of the cycle for a cyclic regeneration unit. Plants must conduct 
the performance test for a continuous regeneration unit no sooner than 
3 days after the process unit or control system startup.

H. What New Options Are Available For a Catalytic Reforming Unit With 
an Internal Scrubbing System?

    Industry representatives expressed concern that the NESHAP do not 
contain provisions allowing a CRU with an internal scrubbing system to 
meet the percent reduction standard instead of the concentration limit 
for HCl emissions.
    The direct final rule amendments change the rule language related 
to the HCl emissions limits (and other provisions) by removing the 
phrase ``using a control device.'' These changes allow CRU with an 
internal scrubbing system or alternative emissions reduction technique 
to meet either the percent reduction standard or concentration limit. 
To improve understanding of the NESHAP, we have added a definition for 
``internal scrubbing system.'' The direct final rule amendments also 
add provisions to Tables 23 through 28 to subpart UUU for CRU with an 
internal scrubbing system meeting the HCl percent reduction standard 
and CRU with a fixed-bed or moving-bed gas-solid adsorption system.
    The direct final rule amendments establish operating limits and 
compliance provisions specific to CRU with an internal scrubbing system 
meeting the HCl percent reduction standard. The operating limits 
require plants to maintain the daily average pH or alkalinity of the 
water (or scrubbing liquid) exiting the internal scrubbing system and 
the daily average liquid-to-gas ratio at or above the limit established 
during the performance test. Plants must conduct performance tests to 
demonstrate initial compliance with the applicable HCl emission 
standard and to establish operating limits. Performance test procedures 
are given for each type of system. To demonstrate continuous 
compliance, plants must install, operate, and maintain CPMS to monitor 
during coke burn-off and catalyst rejuvenation, the daily average pH or 
alkalinity of the water (or scrubbing liquid) exiting the internal 
scrubbing system, and the daily average liquid-to-gas ratio. Plants may 
use pH strips as an approved alternative to a pH CPMS, or discrete 
titration as an alternative to a CPMS for alkalinity.

I. What New Options Are Available For a Catalytic Reforming Unit With a 
Different Type of Control System?

    Industry representatives and technology vendors expressed concern 
that the NESHAP do not include compliance provisions for continuous CRU 
that may use process modifications, pollution prevention control 
techniques, or alternative control systems other than internal or 
external (add-on) wet scrubbers to comply with the emission 
limitations. A refinery process design firm provided data indicating 
that gas-solid adsorption systems can meet the HCl emission limitations 
for CRU. The system also acted as a pollution prevention technique by 
reducing the total amount of chloriding agent needed during catalyst 
regeneration. The direct final rule amendments add provisions to 
accommodate these control scenarios. The new provisions improve the 
NESHAP by encouraging the use of new technologies that meet the MACT 
level of control.
    Plants with a fixed-bed gas-adsorption system must meet two 
operating limits during coke burn-off and catalyst rejuvenation:
    <bullet> The daily average temperature of the gas entering or 
exiting the adsorption system must not exceed the limit established 
during the performance test; and
    <bullet> The HCl concentration in the adsorption system exhaust gas 
must not exceed the limit established during the performance test.
    Plants must conduct a performance test to demonstrate initial 
compliance and to establish operating limits. To demonstrate continuous 
compliance, plants must install, operate, and maintain CPMS to monitor 
the daily average temperature of the gas entering or exiting the 
adsorption system. In addition, plants must monitor HCl during coke 
burn-off and catalyst rejuvenation using a colormetric tube sampling 
system to measure the concentration in the adsorption system exhaust 
and at a point within the adsorbent bed not to exceed 90 percent of the 
total length of the bed. If the HCl concentration at the sampling 
location with the adsorption bed exceeds the operating limit, plants 
must follow the procedures in their operation and maintenance plan. 
These procedures must require, at a minimum, that plants remeasure the 
HCl concentration at both the adsorption system exhaust and at the 
sampling location within the adsorbent bed and replace the sorbent 
material in the bed before the next regeneration cycle if the HCl

[[Page 6935]]

concentration at either location is above the operating limit.
    The direct final rule amendments also establish operating limits 
and compliance provisions for CRU with moving-bed gas-solid adsorption 
systems. The operating limits are:
    <bullet> The daily average temperature of the gas entering or 
exiting the adsorption system must not exceed the limit established 
during the performance test;
    <bullet> The weekly average chloride level on the sorbent entering 
the adsorption system must not exceed the design or manufacturer's 
recommended limit (1.35 weight percent for the Chlorsorb<SUP>TM</SUP> 
system); and
    <bullet> The weekly average chloride level on the sorbent exiting 
the adsorption system must not exceed the design or manufacturer's 
recommended limit (1.8 weight percent for the Chlorsorb<SUP>TM</SUP> 
system).
    Plants must conduct a performance test to demonstrate initial 
compliance and to establish an operating limit for the daily average 
gas temperature. To demonstrate continuous compliance, plants must 
monitor the daily average gas temperature using a CPMS. To demonstrate 
continuous compliance with the operating limits for chloride level, 
plants must collect and analyze samples of the sorbent entering and 
exiting the system for total chloride concentration using the new 
procedure, ``Determination of Metal Concentration on Catalyst Particles 
(Instrument Analyzer Procedure)'' in appendix A of these direct final 
amendments or the specified methods in EPA Publication No. SW-846, 
``Test Methods for Evaluating Solid Waste, Physical/Chemical Methods'' 
(Revision 5, April 1998). Plants must determine and record the weekly 
chloride content and maintain the weekly average chloride content below 
the design operating limits.

J. How Are We Changing The Requirements For Continuous Parameter 
Monitoring Systems?

    The technical specifications for CPMS in Table 41 to subpart UUU 
were added to the NESHAP after proposal based on provisions we have 
included in other NESHAP. We included these provisions to ensure that 
CPMS are installed, calibrated, and operated in a manner that would 
yield accurate and reliable information on the performance of control 
devices. Industry representatives objected to the inclusion of such 
detailed requirements after proposal with no opportunity to comment on 
the provisions.
    We have decided not to include the performance specifications for 
CPMS in the rule at this time. As discussed in the preamble to the 
Generic MACT NESHAP amendments (67 FR 46260, July 12, 2002), we are 
currently developing Performance Specification (PS-17) for CPMS and 
quality assurance procedures that will apply to all sources subject to 
NESHAP under 40 CFR part 63. A proposed rule for these specifications 
is expected to be available in 2005. This approach will avoid the 
possibility that the specifications ultimately issued for all NESHAP 
differ significantly from those in the Petroleum Refineries NESHAP.
    The NESHAP state that each CPMS must be installed, operated, and 
maintained according to the requirements in Table 41 of subpart UUU and 
in a manner consistent with the manufacturer's or other written 
procedures that provide adequate assurance that the equipment will 
monitor accurately. The amendments remove the reference to Table 41 
from 40 CFR 63.1572(c) for those CPMS that will be covered by PS-17 and 
quality assurance procedures. Until PS-17 is available, facilities must 
install, operate, and maintain CPMS in a manner consistent with the 
manufacturer's or other written procedures that provide adequate 
assurance that the equipment will monitor accurately.
    Table 41 to subpart UUU also contains requirements for pH strips 
and colormetric sampling systems. These requirements were added to the 
NESHAP in response to comments and are not expected to be covered by 
the new PS-17 and quality assurance procedures. Consequently, we have 
not removed these requirements from the table.

K. What Corrections Are We Making?

    We are correcting numbering errors and citations in several 
sections of the NESHAP. We are also amending the rule to correct 
publication errors in various tables.
    We are correcting a unit conversion error in Tables 1 through 3 to 
subpart UUU. These tables cite the incremental PM emission rate for 
discharged gases that pass through an incinerator or waste heat boiler 
in which auxiliary or supplemental liquid or solid fossil fuel is 
burned as 43.0 grams per Megajoule of heat input attributable to the 
liquid or solid fossil fuel. The corrected value is 43.0 grams per 
Gigajoule; no change is being made to the English unit equivalent limit 
(0.10 pound per million British thermal units). We are making several 
minor corrections to these tables to ensure that both limits are cited 
consistently and accurately.
    We are correcting Table 5 to subpart UUU to list the proper test 
methods required for PM performance tests for metal HAP emissions. The 
amended table requires EPA Method 5B or 5F (40 CFR part 60, appendix A) 
to determine PM emissions and associated moisture content for a unit 
without a wet scrubber; EPA Method 5B is required to determine PM 
emissions and associated moisture content for a unit with a wet 
scrubber.
    We are correcting Table 6 to subpart UUU to specify the use of 
Equation 1 (the proper equation for calculation of coke burn-off) 
rather than Equation 2.
    We are correcting Table 18 to subpart UUU to correct a 
typographical error in a cross reference to certain requirements for 
flares in the NESHAP General Provisions (40 CFR part 63, subpart A).
    We are correcting Tables 31, 33, and 34 to subpart UUU to clarify 
the monitoring and compliance requirements for a sulfur recovery unit 
subject to the TRS limit. Under this option, the owner or operator may 
use a TRS continuous emission monitoring system or CPMS, and the 
continuous compliance requirements depend on the type of monitoring 
system. The direct final rule amendments separate the requirements 
according to the type of monitoring system and clarify that compliance 
is based on a 12-hour rolling average like the NSPS requirements.
    We also are clarifying our comment in the explanation column of 
Table 44 for the citation 40 CFR 63.6(i), which allows facilities to 
request a 1-year extension of compliance if necessary to install 
controls. We are revising the table to state that the extension of 
compliance under 40 CFR 63.6(i)(4) is not applicable to a facility that 
installs catalytic cracking feed hydrotreating and receives an extended 
compliance date under 40 CFR 63.1563(c). We are also revising Table 44 
to subpart UUU to change the citation to 40 CFR 63.9(b)(3) to indicate 
its current reserved status under the NESHAP General Provisions (40 CFR 
part 63).

III. Summary of Non-Air Health, Environmental, Energy, and Cost Impacts

    The NESHAP will reduce emissions of many HAP emitted from the 
affected sources at petroleum refineries, including particulate metals, 
organics, and reduced sulfur compounds. When fully implemented, we 
estimate that HAP emissions will be reduced by nearly 11,000 tpy. 
Emissions of other pollutants such as volatile organic

[[Page 6936]]

compounds, particulate matter, carbon monoxide, and hydrogen sulfide 
will be reduced by about 60,000 tpy.
    There will not be any adverse non-air health, environmental, 
energy, cost (or economic) impacts as a result of the direct final rule 
amendments because no new requirements are imposed on any facility. The 
new option for CRU will allow for the use of new control technology to 
meet the HCl emission limitations, which may reduce the costs and 
energy impacts of add-on controls.

IV. Statutory and Executive Order Reviews

A. Executive Order 12866: Regulatory Planning and Review

    Under Executive Order 12866 (58 FR 5173, October 4, 1993), the EPA 
must determine whether the regulatory action is ``significant'' and, 
therefore, subject to Office of Management and Budget (OMB) review and 
the requirements of the Executive Order. The Executive Order defines 
``significant regulatory action'' as one that is likely to result in 
standards that may:
    (1) Have an annual effect on the economy of $100 million or more or 
adversely affect, in a material way, the economy, 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 entitlement, 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 the principles set forth in 
the Executive Order.
    It has been determined that the direct final rule amendments are 
not a ``significant regulatory action'' under the terms of Executive 
Order 12866 and are, therefore, not subject to OMB review.

B. Paperwork Reduction Act

    This action does not impose any new information collection burden. 
The direct final rule amendments consist primarily of new compliance 
options, clarifications, and corrections to the NESHAP that impose no 
new information collection requirements on industry or EPA. However, 
the OMB has previously approved the information collection requirements 
in the existing regulation (40 CFR part 63, subpart UUU) under the 
provisions of the Paperwork Reduction Act, 44 U.S.C. 3501 et seq., and 
has assigned OMB control number 2060-0554, EPA Information Collection 
Request (ICR) number 1844.02. A copy of the OMB approved ICR may be 
obtained from Susan Auby, Collection Strategies Division, U.S. 
Environmental Protection Agency (2822T), 1200 Pennsylvania Ave., NW., 
Washington, DC 20460 or by calling (202) 566-1672.
    Burden means the total time, effort, or financial resources 
expended by persons to generate, maintain, retain, or disclose or 
provide information to or for a Federal agency. This includes the time 
needed to review instructions; develop, acquire, install, and utilize 
technology and systems for the purpose of collecting, validating, and 
verifying information; processing and maintaining information, and 
disclosing and providing information; adjust the existing ways to 
comply with any previously applicable instructions and requirements; 
train personnel to respond to a collection of information; search data 
sources; complete and review the collection of information; and 
transmit or otherwise disclose the information.
    An Agency may not conduct or sponsor, and a person is not required 
to respond to a collection of information unless it displays a 
currently valid OMB control number. The OMB control numbers for EPA's 
regulations in 40 CFR part 63 are listed in 40 CFR part 9.

C. Regulatory Flexibility Act

    The EPA has determined that it is not necessary to prepare a 
regulatory flexibility analysis in connection with the direct final 
rule amendments.
    For purposes of assessing the impacts of today's direct final rule 
amendments on small entities, small entity is defined as: (1) A small 
business as defined by the Small Business Administration's regulations 
at 13 CFR 121.201; (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; and (3) a small organization 
that is any not-for-profit enterprise which is independently owned and 
operated and is not dominant in its field.
    After considering the economic impact of today's direct final rule 
amendments on small entities, the EPA has concluded 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 proposed rule on small 
entities'' (5 U.S.C. 603 and 604). Thus, an agency may conclude 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.
    There will be a positive impact on small entities because the 
direct final rule amendments add new compliance provisions to increase 
flexibility, decrease unnecessary costs, and make clarifying changes to 
improve implementation of the NESHAP. These changes are voluntary and 
do not impose new costs. We have, therefore, concluded that today's 
direct final rule amendments will relieve regulatory burden for all 
small entities.

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, the 
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 1 year. Before promulgating an EPA rule for 
which a written statement is needed, section 205 of the UMRA generally 
requires the EPA to identify and consider a reasonable number of 
regulatory alternatives and adopt the least costly, most cost-effective 
or least burdensome 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 the 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 the EPA establishes any regulatory requirements 
that may significantly or uniquely affect small governments, including 
tribal governments, it 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

[[Page 6937]]

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.
    The EPA has determined that the direct final rule amendments do not 
contain a Federal mandate that may result in expenditures of $100 
million or more for State, local, and tribal governments, in aggregate, 
or the private sector in any 1 year. No new costs are attributable to 
the direct final rule amendments. Thus, today's direct final rule 
amendments are not subject to the requirements of sections 202 and 205 
of the UMRA. The EPA has also determined that the direct final rule 
amendments contain no regulatory requirements that might significantly 
or uniquely affect small governments because they contain no 
requirements that apply to such governments or impose obligations upon 
them. Thus, the direct final rule amendments are not subject to the 
requirements of section 203 of the UMRA.

E. Executive Order 13132: Federalism

    Executive Order 13132 (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.''
    The direct final rule amendments do not have federalism 
implications. They 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, 
because State and local governments do not own or operate any sources 
that would be subject to the direct final rule amendments. Thus, 
Executive Order 13132 does not apply to the direct final rule 
amendments.

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

    Executive Order 13175 (65 FR 67249, November 6, 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.'' The direct final rule amendments do 
not have tribal implications, as specified in Executive Order 13175, 
because tribal governments do not own or operate any sources subject to 
the direct final rule amendments. Thus, Executive Order 13175 does not 
apply to the direct final rule amendments.

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

    Executive Order 13045 (62 FR 19885, April 23, 1997) applies to any 
rule that: (1) Is determined to be ``economically significant,'' as 
defined under Executive Order 12866, and (2) concerns an environmental 
health or safety risk that EPA has reason to believe may have a 
disproportionate effect on children. If the regulatory action meets 
both criteria, we must evaluate the environmental health or safety 
effects of the planned rule on children and explain why the planned 
regulation is preferable to other potentially effective and reasonably 
feasible alternatives.
    We interpret Executive Order 13045 as applying only to those 
regulatory actions that are based on health or safety risks, such that 
the analysis required under section 5-501 of the Executive Order has 
the potential to influence the regulation. The direct final rule 
amendments are not subject to Executive Order 13045 because the NESHAP 
(and subsequent amendments) are based on technology performance and not 
on health or safety risks.

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

    The direct final rule amendments are not subject to Executive Order 
13211 (66 FR 28355, May 22, 2001) because they are 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 of 1995 (NTTAA), Public Law 104-113, Sec.  12(d) (15 U.S.C. 272 
note) directs EPA to use voluntary consensus standards in the 
regulatory and procurement activities unless to do so would be 
inconsistent with applicable law or otherwise impracticable. Voluntary 
consensus standards are technical standards (e.g., material 
specifications, test methods, sampling procedures, business practices) 
developed or adopted by one or more voluntary consensus bodies. The 
NTTAA requires Federal agencies to provide Congress, through annual 
reports to OMB, with explanations when an agency does not use available 
and applicable voluntary consensus standards.
    The direct final rule amendments include a new procedure, 
``Determination of Metal Concentration on Catalyst Particles 
(Instrumental Analyzer Procedure).'' This procedure was developed in 
consultation with industry experts and equipment vendors for the 
purpose of determining the metal or total chloride concentration on 
catalyst particles. This new procedure was not fully developed at the 
time the NESHAP were issued and reflects current practices used by many 
plants within the industry. The new procedure is not mandatory; plants 
also may use one of several existing EPA methods in ``Test Methods for 
Evaluating Solid Waste, Physical/Chemical Methods'' (EPA Publication 
SW-846, Revision 5, April 1998) or an alternative method satisfactory 
to the Administrator.
    Consistent with the NTTAA, we conducted a search to identify 
voluntary consensus standards for use in determining the metal or total 
chloride concentration on catalyst particles. This search identified 
one voluntary consensus standard, ASTM D7085-04, ``Standard Guide for 
Determination of Chemical Elements in Fluid Catalytic Cracking 
Catalysts by X-Ray Fluorescence Spectrometry (XRF).'' This method 
contains detailed sample preparation procedures that may be a useful 
supplement to the instrumental method included in the direct final rule 
amendments. However, we have not adopted ASTM D7085-04 as an 
alternative to the instrumental method because the method does not 
include equivalent procedures for determining zero and calibration 
drift, instrument energy calibration, and calibration accuracy, or 
specific quality assurance procedures for analyzing calibration 
standards or catalyst samples.

J. Congressional Review Act

    The Congressional Review Act, 5 U.S.C. 801 et seq., as added by the 
Small Business Regulatory Enforcement Fairness Act of 1996, generally 
provides that before a rule may take effect, the agency promulgating 
the rule must submit a rule report, which includes a copy of the rule, 
to each House of the Congress and to the Comptroller General of the 
United States. The EPA will submit a report containing this rule and 
other required information to the U.S. Senate, the U.S. House of 
Representatives, and the Comptroller

[[Page 6938]]

General of the United States prior to publication of the rule in the 
Federal Register. This action is not a ``major rule'' as defined by 5 
U.S.C. 804(2). The direct final rule amendments will be effective on 
April 11, 2005.

List of Subjects in 40 CFR Part 63

    Environmental protection, Air pollution control, Hazardous 
substances, Reporting and recordkeeping requirements.

    Dated: February 1, 2005.
Stephen L. Johnson,
Acting Administrator.

0
For the reasons set out in the preamble, title 40, chapter I, part 63 
of the Code of Federal Regulations is amended as follows:

PART 63--[AMENDED]

0
1. The authority citation for part 63 continues to read as follows:

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

Subpart UUU--[AMENDED]

0
2. Section 63.1562 is amended by revising paragraphs (b)(1) through (3) 
to read as follows:


Sec.  63.1562  What parts of my plant are covered by this subpart?

* * * * *
    (b) * * *
    (1) The process vent or group of process vents on fluidized 
catalytic cracking units that are associated with regeneration of the 
catalyst used in the unit (i.e., the catalyst regeneration flue gas 
vent).
    (2) The process vent or group of process vents on catalytic 
reforming units (including but not limited to semi-regenerative, 
cyclic, or continuous processes) that are associated with regeneration 
of the catalyst used in the unit. This affected source includes vents 
that are used during the unit depressurization, purging, coke burn, and 
catalyst rejuvenation.
    (3) The process vent or group of process vents on Claus or other 
types of sulfur recovery plant units or the tail gas treatment units 
serving sulfur recovery plants, that are associated with sulfur 
recovery.
* * * * *

0
3. Section 63.1564(b)(4) is amended by revising the definition of the 
symbol ``Q<INF>r</INF>'' for Equation 1 of to read as follows:


Sec.  63.1564  What are my requirements for metal HAP emissions from 
catalytic cracking units?

* * * * *

Q<INF>r</INF> = Volumetric flow rate of exhaust gas from catalyst 
regenerator before adding air or gas streams. Example: You may measure 
upstream or downstream of an electrostatic precipitator, but you must 
measure upstream of a carbon monoxide boiler, dscm/min (dscf/min). You 
may use the alternative in either Sec.  63.1573(a)(1) or (a)(2), as 
applicable, to calculate Q<INF>r</INF>;

* * * * *

0
4. Section 63.1566 is amended by:
0
a. Revising paragraphs (a)(1)(ii) and (a)(3);
0
b. Revising paragraph (b)(4)(i) introductory text;
0
c. Revising the definitions of the symbols ``E'' and ``M<INF>c</INF>'' 
in Equation 1 of paragraph (b)(4)(i);
0
d. Revising Equation 2 of paragraph (b)(4)(i);
0
e. Redesignating paragraph (b)(5) as (b)(4)(ii);
0
f. Revising Equation 4 in the newly designated paragraph (b)(4)(ii); 
and
0
g. Redesignating paragraphs (b)(6) through (b)(9) as (b)(5) through 
(b)(8).
    The revisions and additions read as follows:


Sec.  63.1566  What are my requirements for organic HAP emissions from 
catalytic reforming units?

    (a) * * *
    (1) * * *
    (ii) You can elect to meet a TOC or nonmethane TOC percent 
reduction standard or concentration limit, whichever is less stringent 
(Option 2).
* * * * *
    (3) Except as provided in paragraph (a)(4) of this section, the 
emission limitations in Tables 15 and 16 of this subpart apply to 
emissions from catalytic reforming unit process vents associated with 
initial catalyst depressuring and catalyst purging operations that 
occur prior to the coke burn-off cycle. The emission limitations in 
Tables 15 and 16 of this subpart do not apply to the coke burn-off, 
catalyst rejuvenation, reduction or activation vents, or to the control 
systems used for these vents.
* * * * *
    (b) * * *
    (4) * * *
    (i) If you elect the percent reduction standard under Option 2, 
calculate the emission rate of nonmethane TOC using Equation 1 of this 
section (if you use Method 25) or Equation 2 of this section (if you 
use Method 25A or Methods 25A and 18), then calculate the mass emission 
reduction using Equation 3 of this section as follows:
* * * * *

[GRAPHIC] [TIFF OMITTED] TR09FE05.000


Where:
E = Emission rate of nonmethane TOC in the vent stream, kilograms-C per 
hour;
* * * * *

M<INF>c</INF> = Mass concentration of total gaseous nonmethane organic 
(as carbon) as measured and calculated using Method 25 in appendix A to 
part 60 of this chapter, mg/dscm; and
* * * * *

[GRAPHIC] [TIFF OMITTED] TR09FE05.001


Where:
K<INF>5</INF> = Constant, 1.8 x 10<SUP>-</SUP>\4\ (parts per million) 
<SUP>-</SUP>\1\ (gram-mole per standard cubic meter) (gram-C per gram-
mole-hexane) (kilogram per gram) (minutes per hour), where the standard 
temperature (standard cubic meter) is at 20 degrees C (uses 72g-C/
g.mole hexane);
C <INF>TOC</INF> = Concentration of TOC on a dry basis in ppmv as 
hexane as measured by Method 25A in appendix A to part 60 of this 
chapter;
C <INF>methane</INF> = Concentration of methane on a dry basis in ppmv 
as measured by Method 18 in appendix A to part 60 of this chapter. If 
the concentration of methane is not determined, assume C 
<INF>methane</INF> equals zero; and
Q <INF>s</INF> = Vent stream flow rate, dry standard cubic meters per 
minute, at a temperature of 20 degrees C. * * *
[GRAPHIC] [TIFF OMITTED] TR09FE05.002


Where:
C<INF>NMTOC, 3</INF><INF>[percnt]<INF>O</INF></INF>2 = Concentration of 
nonmethane TOC on a dry basis in ppmv as hexane corrected to 3 percent 
oxygen.


[[Page 6939]]



0
5. Section 63.1567 is amended by:
0
a. Revising paragraphs (a)(1) introductory text and (a)(1)(i);
0
b. Redesignating paragraphs (b)(4) through (b)(6) as paragraphs (b)(5) 
through (b)(7); and
0
c. Adding new paragraph (b)(4).
    The addition and revisions read as follows:


Sec.  63.1567  What are my requirements for inorganic HAP emissions 
from catalytic reforming units?

    (a) * * *
    (1) Meet each emission limitation in Table 22 to this subpart that 
applies to you. If you operate a catalytic reforming unit in which 
different reactors in the catalytic reforming unit are regenerated in 
separate regeneration systems, then these emission limitations apply to 
each separate regeneration system. These emission limitations apply to 
emissions from catalytic reforming unit process vents associated with 
the coke burn-off and catalyst rejuvenation operations during coke 
burn-off and catalyst regeneration. You can choose from the two options 
in paragraphs (a)(1)(i) through (ii) of this section:
    (i) You can elect to meet a percent reduction standard for hydrogen 
chloride (HCl) emissions (Option 1); or
* * * * *
    (b) * * *
    (4) Use the equations in paragraphs (b)(4)(i) through (iv) of this 
section to determine initial compliance with the emission limitations.
    (i) Correct the measured HCl concentration for oxygen 
(O<INF>2</INF>) content in the gas stream using Equation 1 of this 
section as follows:
[GRAPHIC] [TIFF OMITTED] TR09FE05.003


Where:
C<INF>HCl,3</INF><INF>[percnt]</INF> O<INF>2</INF> = Concentration of 
HCl on a dry basis in ppmv corrected to 3 percent oxygen or 1 ppmv, 
whichever is greater;
C<INF>HCl</INF> = Concentration of HCl on a dry basis in ppmv, as 
measured by Method 26A in 40 CFR part 60, appendix A; and
%O<INF>2</INF> = Oxygen concentration in percent by volume (dry basis).

    (ii) If you elect the percent reduction standard, calculate the 
emission rate of HCl using Equation 2 of this section; then calculate 
the mass emission reduction from the mass emission rates using Equation 
3 of this section as follows:

[GRAPHIC] [TIFF OMITTED] TR09FE05.004


Where:
E <INF>HCl,</INF> = Emission rate of HCl in the vent stream, grams per 
hour;
K<INF>6</INF> = Constant, 0.091 (parts per million) <SUP>-1</SUP> 
(grams HCl per standard cubic meter) (minutes per hour), where the 
standard temperature (standard cubic meter) is at 20 degrees Celsius 
(C); and
Q <INF>s</INF> = Vent stream flow rate, dscm/min, at a temperature of 
20 degrees C.
[GRAPHIC] [TIFF OMITTED] TR09FE05.005


Where:
E <INF>HCl,i</INF> = Mass emission rate of HCl at control device inlet, 
g/hr; and
E <INF>HCl,o</INF> = Mass emission rate of HCl at control device 
outlet, g/hr.

    (iii) If you are required to use a colormetric tube sampling system 
to demonstrate continuous compliance with the HCl concentration 
operating limit, calculate the HCl operating limit using Equation 4 of 
this section as follows:
[GRAPHIC] [TIFF OMITTED] TR09FE05.006


Where:
C<INF>HCl,ppmvLimit</INF> = Maximum permissible HCl concentration for 
the HCl concentration operating limit, ppmv;
C<INF>HCl,AveTube</INF> = Average HCl concentration from the 
colormetric tube sampling system, calculated as the arithmetic average 
of the average HCl concentration measured for each performance test 
run, ppmv or 1 ppmv, whichever is greater; and
C<INF>HCl,RegLimit</INF> = Maximum permissible outlet HCl concentration 
for the applicable catalytic reforming unit as listed in Table 22 of 
this subpart, either 10 or 30 ppmv.

    (iv) If you are required to use a colormetric tube sampling system 
to demonstrate continuous compliance with the percent reduction 
operating limit, calculate the HCl operating limit using Equation 5 of 
this section as follows:
[GRAPHIC] [TIFF OMITTED] TR09FE05.007


[[Page 6940]]



Where:
C<INF>HCl,</INF><INF>[percnt]<INF>Limit</INF></INF> = Maximum 
permissible HCl concentration for the percent reduction operating 
limit, ppmv;
%HCl Reduction<INF>Limit</INF> = Minimum permissible HCl reduction for 
the applicable catalytic reforming unit as listed in Table 22 of this 
subpart, either 97 or 92 percent; and
%HCl Reduction<INF>Test</INF> = Average percent HCl reduction 
calculated as the arithmetic average HCl reduction calculated using 
Equation 3 of this section for each performance source test, percent.
* * * * *

0
6. Section 63.1572 is amended by revising paragraphs (c) introductory 
text and (c)(1) to read as follows:


Sec.  63.1572  What are my monitoring installation, operation, and 
maintenance requirements?

* * * * *
    (c) You must install, operate, and maintain each continuous 
parameter monitoring system according to the requirements in paragraphs 
(c)(1) through (5) of this section.
    (1) The owner or operator shall install, operate, and maintain each 
continuous parameter monitoring system in a manner consistent with the 
manufacturer's specifications or other written procedures that provide 
adequate assurance that the equipment will monitor accurately. The 
owner or operator shall also meet the equipment specifications in Table 
41 of this subpart if pH strips or colormetric tube sampling systems 
are used.
* * * * *

0
7. Section 63.1573 is amended by:
0
a. Revising paragraphs (a) and (b); and
0
b. Adding new paragraph (f).
    The revisions and addition read as follows:


Sec.  63.1573  What are my monitoring alternatives?

    (a) What are the approved alternatives for measuring gas flow rate? 
(1) You may use this alternative to a continuous parameter monitoring 
system for the catalytic regenerator exhaust gas flow rate for your 
catalytic cracking unit if the unit does not introduce any other gas 
streams into the catalyst regeneration vent (i.e., complete combustion 
units with no additional combustion devices). You may also use this 
alternative to a continuous parameter monitoring system for the 
catalytic regenerator atmospheric exhaust gas flow rate for your 
catalytic reforming unit during the coke burn and rejuvenation cycles 
if the unit operates as a constant pressure system during these cycles. 
If you use this alternative, you shall use the same procedure for the 
performance test and for monitoring after the performance test. You 
shall:
    (i) Install and operate a continuous parameter monitoring system to 
measure and record the hourly average volumetric air flow rate to the 
catalytic cracking unit or catalytic reforming unit regenerator. Or, 
you may determine and record the hourly average volumetric air flow 
rate to the catalytic cracking unit or catalytic reforming unit 
regenerator using the appropriate control room instrumentation.
    (ii) Install and operate a continuous parameter monitoring system 
to measure and record the temperature of the gases entering the control 
device (or exiting the catalyst regenerator if you do not use an add-on 
control device).
    (iii) Calculate and record the hourly average actual exhaust gas 
flow rate using Equation 1 of this section as follows:
[GRAPHIC] [TIFF OMITTED] TR09FE05.008


Where:
Q <INF>gas</INF> = Hourly average actual gas flow rate, acfm;
1.12 = Default correction factor to convert gas flow from dry standard 
cubic feet per minute (dscfm) to standard cubic feet per minute (scfm);
Q <INF>air</INF> = Volumetric flow rate of air to regenerator, as 
determined from the control room instrumentations, dscfm;
Q <INF>other</INF> = Volumetric flow rate of other gases entering the 
regenerator as determined from the control room instrumentations, 
dscfm. (Examples of ``other'' gases include an oxygen-enriched air 
stream to catalytic cracking unit regenerators and a nitrogen stream to 
catalytic reforming unit regenerators.);
Temp<INF>gas</INF> = Temperature of gas stream in vent measured as near 
as practical to the control device or opacity monitor, [deg]K. For wet 
scrubbers, temperature of gas prior to the wet scrubber; and
P<INF>vent</INF> = Absolute pressure in the vent measured as near as 
practical to the control device or opacity monitor, as applicable, atm. 
When used to assess the gas flow rate in the final atmospheric vent 
stack, you can assume P<INF>vent</INF> = 1 atm.

    (2) You may use this alternative to calculating Q <INF>r</INF>, the 
volumetric flow rate of exhaust gas for the catalytic cracking 
regenerator as required in Equation 1 of Sec.  63.1564, if you have a 
gas analyzer installed in the catalytic cracking regenerator exhaust 
vent prior to the addition of air or other gas streams. You may measure 
upstream or downstream of an electrostatic precipitator, but you shall 
measure upstream of a carbon monoxide boiler. You shall:
    (i) Install and operate a continuous parameter monitoring system to 
measure and record the hourly average volumetric air flow rate to the 
catalytic cracking unit regenerator. Or, you can determine and record 
the hourly average volumetric air flow rate to the catalytic cracking 
unit regenerator using the catalytic cracking unit control room 
instrumentation.
    (ii) Install and operate a continuous gas analyzer to measure and 
record the concentration of carbon dioxide, carbon monoxide, and oxygen 
of the catalytic cracking regenerator exhaust.
    (iii) Calculate and record the hourly average flow rate using 
Equation 2 of this section as follows:
[GRAPHIC] [TIFF OMITTED] TR09FE05.009


[[Page 6941]]



Where:
Q <INF>r</INF> = Volumetric flow rate of exhaust gas from the catalyst 
regenerator before adding air or gas streams, dscm/min (dscf/min);
79 = Default concentration of nitrogen and argon in dry air, percent by 
volume (dry basis);
%O<INF>xy</INF> = Oxygen concentration in oxygen-enriched air stream, 
percent by volume (dry basis);
Q <INF>oxy</INF> = Volumetric flow rate of oxygen-enriched air stream 
to regenerator as determined from the catalytic cracking unit control 
room instrumentations, dscm/min (dscf/min);
%CO<INF>2</INF> = Carbon dioxide concentration in regenerator exhaust, 
percent by volume (dry basis);
CO = Carbon monoxide concentration in regenerator exhaust, percent by 
volume (dry basis); and
%O<INF>2</INF> = Oxygen concentration in regenerator exhaust, percent 
by volume (dry basis).

    (b) What is the approved alternative for monitoring pH or 
alkalinity levels? You may use the alternative in paragraph (b)(1) or 
(2) of this section for a catalytic reforming unit.
    (1) You shall measure and record the pH of the water (or scrubbing 
liquid) exiting the wet scrubber or internal scrubbing system at least 
once an hour during coke burn-off and catalyst rejuvenation using pH 
strips as an alternative to a continuous parameter monitoring system. 
The pH strips must meet the requirements in Table 41 of this subpart.
    (2) You shall measure and record the alkalinity of the water (or 
scrubbing liquid) exiting the wet scrubber or internal scrubbing system 
at least once an hour during coke burn-off and catalyst rejuvenation 
using titration as an alternative to a continuous parameter monitoring 
system.
* * * * *
    (f) How do I apply for alternative monitoring requirements if my 
catalytic cracking unit is equipped with a wet scrubber and I have 
approved alternative monitoring requirements under the new source 
performance standards for petroleum refineries?
    (1) You may request alternative monitoring requirements according 
to the procedures in this paragraph if you meet each of the conditions 
in paragraphs (f)(1)(i) through (iii) of this section:
    (i) Your fluid catalytic cracking unit regenerator vent is subject 
to the PM limit in 40 CFR 60.102(a)(1) and uses a wet scrubber for PM 
emissions control;
    (ii) You have alternative monitoring requirements for the 
continuous opacity monitoring system requirement in 40 CFR 60.105(a)(1) 
approved by the Administrator; and
    (iii) You are required by this subpart to install, operate, and 
maintain a continuous opacity monitoring system for the same catalytic 
cracking unit regenerator vent for which you have approved alternative 
monitoring requirements.
    (2) You can request approval to use an alternative monitoring 
method prior to submitting your notification of compliance status, in 
your notification of compliance status, or at any time.
    (3) You must submit a copy of the approved alternative monitoring 
requirements along with a monitoring plan that includes a description 
of the continuous monitoring system or method, including appropriate 
operating parameters that will be monitored, test results demonstrating 
compliance with the opacity limit used to establish an enforceable 
operating limit(s), and the frequency of measuring and recording to 
establish continuous compliance. If applicable, you must also include 
operation and maintenance requirements for the continuous monitoring 
system.
    (4) We will contact you within 30 days of receipt of your 
application to inform you of approval or of our intent to disapprove 
your request.


0
8. Section 63.1574 is amended by:
0
a. Revising paragraph (a)(3)(ii);
0
b. Revising paragraph (c); and
0
c. Revising the first sentence of paragraph (f) introductory text, 
revising paragraph (f)(2) introductory text, revising paragraphs 
(f)(2)(vi) and (f)(2)(x), and adding new paragraphs (f)(2)(xi) and 
(xii).
    The revisions read as follows:


Sec.  63.1574  What notifications must I submit and when?

    (a) * * *
    (3) * * *
    (ii) For each initial compliance demonstration that includes a 
performance test, you must submit the notification of compliance 
status, including the performance test results, no later than 150 
calendar days after the compliance date specified for your affected 
source in Sec.  63.1563.
* * * * *
    (c) If you startup your new or reconstructed affected source on or 
after April 11, 2002, you must submit the initial notification no later 
than 120 days after you become subject to this subpart.
* * * * *
    (f) As required by this subpart, you must prepare and implement an 
operation, maintenance, and monitoring plan for each control system and 
continuous monitoring system for each affected source. * * *
    (2) Each plan must include, at a minimum, the information specified 
in paragraphs (f)(2)(i) through (xii) of this section.
* * * * *
    (vi) Procedures you will use to determine the HCl concentration of 
gases from a catalytic reforming unit when you use a colormetric tube 
sampling system, including procedures for correcting for pressure (if 
applicable to the sampling equipment) and the sampling locations that 
will be used for compliance monitoring purposes.
* * * * *
    (x) Maintenance schedule for each monitoring system and control 
device for each affected source that is generally consistent with the 
manufacturer's instructions for routine and long-term maintenance.
    (xi) If you use a fixed-bed gas-solid adsorption system to control 
emissions from a catalytic reforming unit, you must implement 
corrective action procedures if the HCl concentration measured at the 
selected compliance monitoring sampling location within the bed exceeds 
the operating limit. These procedures must require, at minimum, repeat 
measurement and recording of the HCl concentration in the adsorption 
system exhaust gases and at the selected compliance monitoring sampling 
location within the bed. If the HCl concentration at the selected 
compliance monitoring location within the bed is above the operating 
limit during the repeat measurement while the HCl concentration in the 
adsorption system exhaust gases remains below the operating limit, the 
adsorption bed must be replaced as soon as practicable. Your procedures 
must specify the sampling frequency that will be used to monitor the 
HCl concentration in the adsorption system exhaust gases subsequent to 
the repeat measurement and prior to replacement of the sorbent material 
(but not less frequent than once every 4 hours during coke burn-off). 
If the HCl concentration of the adsorption system exhaust gases is 
above the operating limit when measured at any time, the adsorption bed 
must be replaced within 24 hours or before the next regeneration cycle, 
whichever is longer.
    (xii) Procedures that will be used for purging the catalyst if you 
do not use a control device to comply with the organic HAP emission 
limits for catalytic reforming units. These procedures will include, 
but are not limited to, specification of the minimum

[[Page 6942]]

catalyst temperature and the minimum cumulative volume of gas per mass 
of catalyst used for purging prior to uncontrolled releases (i.e., 
during controlled purging events); the maximum purge gas temperature 
for uncontrolled purge events; and specification of the monitoring 
systems that will be used to monitor and record data during each purge 
event.

0
9. Section 63.1576 is amended by revising paragraph (a)(2) to read as 
follows:


Sec.  63.1576  What records must I keep, in what form, and for how 
long?

    (a) * * *
    (2) The records in Sec.  63.6(e)(3)(iii) through (v) related to 
startup, shutdown, and malfunction.
* * * * *

0
10. Section 63.1579 is amended by:
0
a. Adding, in alphabetical order, new definitions for the terms 
``Internal scrubbing system'' and ``Nonmethane TOC''; and
0
b. Revising the definition for the term ``TOC.''
    The additions and revision read as follows:


Sec.  63.1579  What definitions apply to this subpart?

* * * * *
    Internal scrubbing system means a wet scrubbing, wet injection, or 
caustic injection control device that treats (in-situ) the catalytic 
reforming unit recirculating coke burn exhaust gases for acid (HCl) 
control during reforming catalyst regeneration upstream of the 
atmospheric coke burn vent.
* * * * *
    Nonmethane TOC means, for the purposes of this subpart, emissions 
of total organic compounds, excluding methane, that serve as a 
surrogate measure of the total emissions of organic HAP compounds 
including, but not limited to, acetaldehyde, benzene, hexane, phenol, 
toluene, and xylenes and nonHAP VOC as measured by Method 25 in 
appendix A to part 60 of this chapter, by the combination of Methods 18 
and 25A in appendix A to part 60 of this chapter, or by an approved 
alternative method.
* * * * *
    TOC means, for the purposes of this subpart, emissions of total 
organic compounds that serve as a surrogate measure of the total 
emissions of organic HAP compounds including, but not limited to, 
acetaldehyde, benzene, hexane, phenol, toluene, and xylenes and nonHAP 
VOC as measured by Method 25A in appendix A to part 60 of this chapter 
or by an approved alternative method.
* * * * *

0
11. Tables 1 through 44 to subpart UUU of part 63 are amended to remove 
the phrase, ``you must'' and add in its place the phrase ``you shall'' 
in the introductory text and in the last column heading, where 
applicable (i.e., Tables 1 through 3, 6 through 10, 13 through 17, 20 
through 24, 27 through 31, 34 through 37, 39, and 41 through 43).


0
12. Table 1 to subpart UUU of part 63 is amended to revising entries 1 
and 2 to read as follows:

    Table 1 to Subpart UUU of Part 63--Metal HAP Emission Limits for
                        Catalytic Cracking Units.
                                * * * * *
------------------------------------------------------------------------
                                           You shall meet the following
   For each new or existing catalytic        emission limits for each
          cracking unit . . .            catalyst regenerator vent . . .
------------------------------------------------------------------------
1. Subject to new source performance     PM emissions must not the
 standard (NSPS) for PM in 40 CFR         exceed 1.0 kilogram (kg) per
 60.102.                                  1,000 kg (1.0 lb/1,000 lb) of
                                          coke burn-off in the catalyst
                                          regenerator; if the discharged
                                          gases pass through an
                                          incinerator or waste heat
                                          boiler in which you burn
                                          auxiliary or in supplemental
                                          liquid or solid fossil fuel,
                                          the incremental rate of PM
                                          emissions must not exceed 43.0
                                          grams per Gigajoule (g/GJ) or
                                          0.10 pounds per million
                                          British thermal units (lb/
                                          million Btu) of heat input
                                          attributable to the liquid or
                                          solid fossil fuel; and the
                                          opacity of emissions must not
                                          exceed 30 percent, except for
                                          one 6-minute average opacity
                                          reading in any 1-hour period.
2. Option 1: NSPS requirements not       PM emissions must not exceed
 subject to the NSPS for PM in 40 CFR     1.0 kg/1,000 kg (1.0 lb/1,000
 60.102.                                  lb) of coke burn-off in the
                                          catalyst regenerator; if the
                                          discharged gases pass through
                                          an incinerator or waste heat
                                          boiler in which you burn
                                          auxiliary or supplemental
                                          liquid or solid fossil fuel,
                                          the incremental rate of PM
                                          must not exceed 43.0 g/GJ
                                          (0.10 lb/million Btu) of heat
                                          input attributable to the
                                          liquid or solid fossil fuel;
                                          and the opacity of emissions
                                          must not exceed 30 percent,
                                          except for one 6-minute
                                          average opacity reading in any
                                          1-hour period.
 
                               * * * * * *
------------------------------------------------------------------------


0
13. Table 3 to subpart UUU of part 63 is revised to read as follows:

    Table 3 to Subpart UUU of Part 63.--Continuous Monitoring Systems for Metal HAP Emissions From Catalytic
                                                 Cracking Units
[As stated in Sec.   63.1564(b)(1), you shall meet each requirement in the following table that applies to you.]
----------------------------------------------------------------------------------------------------------------
                                                                 And you use this type      You shall install,
  For each new or existing catalytic      If your catalytic      of control device for   operate, and maintain a
         cracking unit . . .            cracking unit is . . .      your vent . . .               . . .
----------------------------------------------------------------------------------------------------------------
1. Subject to the NSPS for PM in 40    Any size...............  Electrostatic            Continuous opacity
 CFR 60.102.                                                     precipitator or wet      monitoring system to
                                                                 scrubber or no control   measure and record the
                                                                 device.                  opacity of emissions
                                                                                          from each catalyst
                                                                                          regenerator vent.

[[Page 6943]]

 
2. Option 1: NSPS limits not subject   Any size...............  Electrostatic            Continuous opacity
 to the NSPS for PM in 40 CFR 60.102.                            precipitator or wet      monitoring system to
                                                                 scrubber or no control   measure and record the
                                                                 device.                  opacity of emissions
                                                                                          from each catalyst
                                                                                          regenerator vent.
3. Option 2: PM limit not subject to   a. Over 20,000 barrels   Electrostatic            Continuous opacity
 the NSPS for PM in 40 CFR 60.102.      per day fresh feed       precipitator.            monitoring system to
                                        capacity.                                         measure and record the
                                                                                          opacity of emissions
                                                                                          from each catalyst
                                                                                          regenerator vent.
                                       b. Up to 20,000 barrels  Electrostatic            Continuous opacity
                                        per day fresh feed       precipitator.            monitoring system to
                                        capacity.                                         measure and record the
                                                                                          opacity of emissions
                                                                                          from each catalyst
                                                                                          regenerator vent; or
                                                                                          continuous parameter
                                                                                          monitoring systems to
                                                                                          measure and record the
                                                                                          gas flow rate entering
                                                                                          or exiting the control
                                                                                          device \1\ and the
                                                                                          voltage and secondary
                                                                                          current (or total
                                                                                          power input) to the
                                                                                          control device.
                                       c. Any size............  i. Wet scrubber........  (1) Continuous
                                                                                          parameter monitoring
                                                                                          system to measure and
                                                                                          record the pressure
                                                                                          drop across the
                                                                                          scrubber, gas flow
                                                                                          rate entering or
                                                                                          exiting the control
                                                                                          device \1\, and total
                                                                                          liquid (or scrubbing
                                                                                          liquor) flow rate to
                                                                                          the control device.
                                                                                         (2) If you use a wet
                                                                                          scrubber of the non-
                                                                                          venturi jet-ejector
                                                                                          design, you're not
                                                                                          required to install
                                                                                          and operate a
                                                                                          continuous parameter
                                                                                          monitoring system for
                                                                                          pressure drop.
                                       d. Any size............  No electrostatic         Continuous opacity
                                                                 precipitator or wet      monitoring system to
                                                                 scrubber.                measure and record the
                                                                                          opacity of emissions
                                                                                          from each catalyst
                                                                                          regnerator vent.
4. Option 3: Ni lb/hr not subject to   a. Over 20,000 barrels   Electrostatic            Continuous opacity
 the NSPS for PM in 40 CFR 60.102.      per day fresh feed       precipitator.            monitoring system to
                                        capacity.                                         measure and record the
                                                                                          opacity of emissions
                                                                                          from each catalyst
                                                                                          regenerator vent and
                                                                                          continuous parameter
                                                                                          monitoring system to
                                                                                          measure and record the
                                                                                          gas flow rate entering
                                                                                          or exiting the control
                                                                                          device \1\.
                                       b. Up to 20,000 barrels  Electrostatic            Continuous opacity
                                        per day fresh feed       precipitator.            monitoring system to
                                        capacity.                                         measure and record the
                                                                                          opacity of emissions
                                                                                          from each catalyst
                                                                                          regenerator vent and
                                                                                          continuous parameter
                                                                                          monitoring system to
                                                                                          measure and record the
                                                                                          gas flow rate entering
                                                                                          or exiting the control
                                                                                          device \1\; or
                                                                                          continuous parameter
                                                                                          monitoring systems to
                                                                                          measure and record the
                                                                                          gas flow rate entering
                                                                                          or exiting the control
                                                                                          device \1\ and the
                                                                                          voltage and secondary
                                                                                          current (or total
                                                                                          power input) to the
                                                                                          control device.

[[Page 6944]]

 
                                       c. Any size............  Wet scrubber...........  (1) Continuous
                                                                                          parameter monitoring
                                                                                          system to measure and
                                                                                          record the pressure
                                                                                          drop across the
                                                                                          scrubber, gas flow
                                                                                          rate entering or
                                                                                          exiting the control
                                                                                          device \1\, and total
                                                                                          liquid (or scrubbing
                                                                                          liquor) flow rate to
                                                                                          the control device.
                                                                                         (2) If you use a wet
                                                                                          scrubber of the non-
                                                                                          venturi jet-ejector
                                                                                          design, you're not
                                                                                          required to install
                                                                                          and operate a
                                                                                          continuous parameter
                                                                                          monitoring system for
                                                                                          pressure drop.
                                       d. Any size............  No electrostatic         Continuous opacity
                                                                 precipitator or wet      monitoring system to
                                                                 scrubber.                measure and record the
                                                                                          opacity of emissions
                                                                                          from each catalyst
                                                                                          regenerator vent and
                                                                                          continuous parameter
                                                                                          monitoring system to
                                                                                          measure and record the
                                                                                          gas flow rate \1\.
5. Option 4: Ni lb/1,000 lbs of coke   a. Over 20,000 barrels   Electrostatic            Continuous opacity
 burn-off not subject to the NSPS for   per day fresh feed       precipitator.            monitoring system to
 PM in 40 CFR 60.102.                   capacity.                                         measure and record the
                                                                                          opacity of emissions
                                                                                          from each catalyst
                                                                                          regenerator vent and
                                                                                          continuous parameter
                                                                                          monitoring system to
                                                                                          measure and record the
                                                                                          gas flow rate entering
                                                                                          or exiting the control
                                                                                          device \1\.
                                       b. Up to 20,000 barrels  Electrostatic            Continuous opacity
                                        per day fresh feed       precipitator.            monitoring system to
                                        capacity.                                         measure and record the
                                                                                          opacity of emissions
                                                                                          from each catalyst
                                                                                          regenerator vent and
                                                                                          continuous parameter
                                                                                          monitoring system to
                                                                                          measure and record the
                                                                                          gas flow rate entering
                                                                                          or exiting the control
                                                                                          device \1\; or
                                                                                          continuous parameter
                                                                                          monitoring systems to
                                                                                          measure and record the
                                                                                          gas flow rate entering
                                                                                          or exiting the control
                                                                                          device \1\ and the
                                                                                          voltage and secondary
                                                                                          current (or total
                                                                                          power input) to the
                                                                                          control device.
                                       c. Any size............  Wet scrubber...........  Continuous parameter
                                                                                          monitoring system to
                                                                                          measure and record the
                                                                                          pressure drop across
                                                                                          the scrubber, gas flow
                                                                                          rate entering or
                                                                                          exiting the control
                                                                                          device \1\, and total
                                                                                          liquid (or scrubbing
                                                                                          liquor) flow rate to
                                                                                          the control device.
                                       d. Any size............  No electrostatic         Continuous opacity
                                                                 precipitator or wet      monitoring system to
                                                                 scrubber.                measure and record the
                                                                                          opacity of emissions
                                                                                          from each catalyst
                                                                                          regenerator vent and
                                                                                          continuous parameter
                                                                                          monitoring system to
                                                                                          measure and record the
                                                                                          gas flow rate \1\.
----------------------------------------------------------------------------------------------------------------
\1\ If applicable, you can use the alternative in Sec.   63.1573(a)(1) instead of a continuous parameter
  monitoring system for gas flow rate.



0
14. Table 4 to subpart UUU of part 63 is amended by revising entries 2, 
3, 4, and 5; revising footnote 1; and adding new footnote 2 to read as 
follows:

[[Page 6945]]



  Table 4 to Subpart UUU of Part 63--Requirements for Performance Tests for Metal HAP Emissions From Catalytic
      Cracking Units Not Subject to the New Source Performance Standards (NSPS) for Particulate Matter (PM)
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------
  For each new or existing catalytic
  cracking unit catalyst regenerator       You shall . . .            Using . . .           According to these
              vent . . .                                                                    requirements . . .
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
2. Option 1: Elect NSPS..............  a. Measure PM            Method 5B or 5F (40 CFR  You must maintain a
                                        emissions.               part 60, appendix A)     sampling rate of at
                                                                 to determine PM          least 0.15 dry
                                                                 emissions and            standard cubic meters
                                                                 associated moisture      per minute (dscm/min)
                                                                 content for units        (0.53 dry standard
                                                                 without wet scrubbers.   cubic feet per minute
                                                                 Method 5B (40 CFR part   (dscf/min).
                                                                 60, appendix A) to
                                                                 determine PM emissions
                                                                 and associated
                                                                 moisture content for
                                                                 unit with wet
                                                                 scrubber.
                                       b. Compute PM emission   Equations 1, 2, and 3
                                        rate (lbs/1,000 lbs)     of Sec.   63.1564 (if
                                        of coke burn-off.        applicable).
                                       c. Measure opacity of    Continuous opacity       You must collect
                                        emissions.               monitoring system.       opacity monitoring
                                                                                          data every 10 seconds
                                                                                          during the entire
                                                                                          period of the Method
                                                                                          5B or 5F performance
                                                                                          test and reduce the
                                                                                          data to 6-minute
                                                                                          averages.
3. Option 2: PM limit................  a. Measure PM            See item 2. of this      See item 2. of this
                                        emissions.               table.                   table.
                                       b. Compute coke burn-    Equations 1 and 2 of
                                        off rate and PM          Sec.   63.1564.
                                        emission rate.
                                       c. Establish your site-  Data from the            You must collect
                                        specific opacity         continuous opacity       opacity monitoring
                                        operating limit if you   monitoring system.       data every 10 seconds
                                        use a continuous                                  during the entire
                                        opacity monitoring                                period of the Method
                                        system.                                           5B or 5F performance
                                                                                          test and reduce the
                                                                                          data to 6-minute
                                                                                          averages; determine
                                                                                          and record the hourly
                                                                                          average opacity from
                                                                                          all the 6-minute
                                                                                          averages; and compute
                                                                                          the site-specific
                                                                                          limit using Equation 4
                                                                                          of Sec.   63.1564.
4. Option 3: Ni lb/hr................  a. Measure               Method 29 (40 CFR part
                                        concentration of Ni      60, appendix A).
                                        and total metal HAP.
                                       b. Compute Ni emission   Equation 5 of Sec.
                                        rate (lb/hr).            63.1564.
                                       c. Determine the         XRF procedure in         You must obtain 1
                                        equilibrium catalyst     appendix A to this       sample for each of the
                                        Ni concentration.        subpart\1\; or EPA       3 runs; determine and
                                                                 Method 6010B or 6020     record the equilibrium
                                                                 or EPA Method 7520 or    catalyst Ni
                                                                 7521 in SW-846\2\; or    concentration for each
                                                                 an alternative to the    of the 3 samples; and
                                                                 SW-846 method            you may adjust the
                                                                 satisfactory to the      laboratory results to
                                                                 Administrator.           the maximum value
                                                                                          using Equation 2 of
                                                                                          Sec.   63.1571.
                                       d. If you use a          i. Equations 6 and 7 of  (1) You must collect
                                        continuous opacity       Sec.   63.1564 using     opacity monitoring
                                        monitoring system,       data from continuous     data every 10 seconds
                                        establish your site-     opacity monitoring       during the entire
                                        specific Ni operating    system, gas flow rate,   period of the initial
                                        limit.                   results of equilibrium   Ni performance test;
                                                                 catalyst Ni              reduce the data to 6-
                                                                 concentration            minute averages; and
                                                                 analysis, and Ni         determine and record
                                                                 emission rate from       the hourly average
                                                                 Method 29 test.          opacity from all the 6-
                                                                                          minute averages.
                                                                                         (2) You must collect
                                                                                          gas flow rate
                                                                                          monitoring data every
                                                                                          15 minutes during the
                                                                                          entire period of the
                                                                                          initial Ni performance
                                                                                          test; measure the gas
                                                                                          flow as near as
                                                                                          practical to the
                                                                                          continuous opacity
                                                                                          monitoring system; and
                                                                                          determine and record
                                                                                          the hourly average
                                                                                          actual gas flow rate
                                                                                          from all the readings.
5. Option 4: Ni lbs/1,000 lbs of coke  a. Measure               Method 29 (40 CFR part
 burn-off.                              concentration of Ni      60, appendix A).
                                        and total HAP.

[[Page 6946]]

 
                                       b. Compute Ni emission   Equations 1 and 8 of     .......................
                                        rate (lb/1,000 lbs of    Sec.   63.1564.
                                        coke burn-off).
                                       c. Determine the         See item 4.c. of this    You must obtain 1
                                        equilibrium catalyst     table.                   sample for each of the
                                        Ni concentration.                                 3 runs; determine and
                                                                                          record the equilibrium
                                                                                          catalyst Ni
                                                                                          concentration for each
                                                                                          of the 3 samples; and
                                                                                          you may adjust the
                                                                                          laboratory results to
                                                                                          the maximum value
                                                                                          using Equation 2 of
                                                                                          Sec.   63.1571.
                                       d. If you use a          i. Equations 9 and 10    (1) You must collect
                                        continuous opacity       of Sec.   63.1564 with   opacity monitoring
                                        monitoring system,       data from continuous     data every 10 seconds
                                        establish your site-     opacity monitoring       during the entire
                                        specific Ni operating    system, coke burn-off    period of the initial
                                        limit.                   rate, results of         Ni performance test;
                                                                 equilibrium catalyst     reduce the data to 6-
                                                                 Ni concentration         minute averages; and
                                                                 analysis, and Ni         determine and record
                                                                 emission rate from       the hourly average
                                                                 Method 29 test.          opacity from all the 6-
                                                                                          minute averages.
                                                                                         (2) You must collect
                                                                                          gas flow rate
                                                                                          monitoring data every
                                                                                          15 minutes during the
                                                                                          entire period of the
                                                                                          initial Ni performance
                                                                                          test; measure the gas
                                                                                          flow rate as near as
                                                                                          practical to the
                                                                                          continuous opacity
                                                                                          monitoring system; and
                                                                                          determine and record
                                                                                          the hourly average
                                                                                          actual gas flow rate
                                                                                          from all the readings.
                                       e. Record the catalyst
                                        addition rate for each
                                        test and schedule for
                                        the 10- day period
                                        prior to the test.
 
                                                   * * * * * *
----------------------------------------------------------------------------------------------------------------
\1\Determination of Metal Concentration on Catalyst Particles (Instrumental Analyzer Procedure).
\2\ EPA Method 6010B, Inductively Coupled Plasma-Atomic Emission Spectrometry, EPA Method 6020, Inductively
  Coupled Plasma-Mass Spectrometry, EPA Method 7520, Nickel Atomic Absorption, Direct Aspiration, and EPA Method
  7521, Nickel Atomic Absorption, Direct Aspiration are included in ``Test Methods for Evaluating Solid Waste,
  Physical/Chemical Methods,'' EPA Publication SW-846, Revision 5 (April 1998). The SW-846 and Updates (document
  number 955-001-00000-1) are available for purchase from the Superintendent of Documents, U.S. Government
  Printing Office, Washington, DC 20402, (202) 512-1800; and from the National Technical Information Services
  (NTIS), 5285 Port Royal Road, Springfield, VA 22161, (703) 487-4650. Copies may be inspected at the EPA Docket
  Center (Air Docket), EPA West, Room B-108, 1301 Constitution Ave., NW., Washington, DC; or at the Office of
  the Federal Register, 800 North Capitol Street, NW., Suite 700, Washington, DC.


0
15. Table 5 to subpart UUU of part 63 is amended by revising entries 1, 
2, and 3 to read as follows:

[[Page 6947]]



  Table 5 to Subpart UUU of Part 63.--Initial-Compliance With Metal HAP
              Emission Limits for Catalytic Cracking Units
                                * * * * *
------------------------------------------------------------------------
  For each new and existing
   catalytic cracking unit      For the following         You have
 catalyst regenerator vent .  emission limit . . .  demonstrated initial
             . .                                     compliance if . . .
------------------------------------------------------------------------
1. Subject to the NSPS for    PM emissions must     You have already
 PM in 40 CFR 60.102.          not exceed 1.0 kg/    conducted a
                               1,000 kg (1.0 lb/     performance test to
                               1,000 lb) of coke     demonstrate initial
                               burn-off in the       compliance with the
                               catalyst              NSPS and the
                               regenerator; if the   measured PM
                               discharged gases      emission rate is
                               pass through an       less than or equal
                               incinerator or        to 1.0 kg/1,000 kg
                               waste heat boiler     (1.0 lb/1,000 lb)
                               in which you burn     of coke burn-off in
                               auxiliary or          the catalyst
                               supplemental liquid   regenerator. As
                               or solid fossil       part of the
                               fuel, the             Notification of
                               incremental rate of   Compliance Status,
                               PM must not exceed    you must certify
                               43.0 grams per        that your vent
                               Gigajoule (g/GJ) or   meets the PM limit.
                               0.10 pounds per       You are not
                               million British       required to do
                               thermal units (lb/    another performance
                               million Btu) of       test to demonstrate
                               heat input            initial compliance.
                               attributable to the   If applicable, you
                               liquid or solid       have already
                               fossil fuel; and      conducted a
                               the opacity of        performance test to
                               emissions must not    demonstrate initial
                               exceed 30 percent,    compliance with the
                               except for one 6-     NSPS and the
                               minute average        measured PM rate is
                               opacity reading in    less than or equal
                               any 1-hour period.    to 43.0 g/GJ (0.10
                                                     lb/million Btu) of
                                                     heat input
                                                     attributable to the
                                                     liquid or solid
                                                     fossil fuel. As
                                                     part of the
                                                     Notification of
                                                     Compliance Status,
                                                     you must certify
                                                     that your vent
                                                     meets the PM
                                                     emission limit. You
                                                     are not required to
                                                     do another
                                                     performance test to
                                                     demonstrate initial
                                                     compliance. You
                                                     have already
                                                     conducted a
                                                     performance test to
                                                     demonstrate initial
                                                     compliance with the
                                                     NSPS and the
                                                     average hourly
                                                     opacity is no more
                                                     than 30 percent.
                                                     Except: One 6-
                                                     minute average in
                                                     any 1-hour period
                                                     can exceed 30
                                                     percent. As part of
                                                     the Notification of
                                                     Compliance Status,
                                                     you must certify
                                                     that your vent
                                                     meets the opacity
                                                     limit. You are not
                                                     required to do
                                                     another performance
                                                     test to demonstrate
                                                     initial compliance.
                                                     You have already
                                                     conducted a
                                                     performance
                                                     evaluation to
                                                     demonstrate initial
                                                     compliance with the
                                                     applicable
                                                     performance
                                                     specification. As
                                                     part of your
                                                     Notification of
                                                     Compliance Status,
                                                     you certify that
                                                     your continuous
                                                     opacity monitoring
                                                     system meets the
                                                     requirements in
                                                     Sec.   63.1572. You
                                                     are not required to
                                                     do a performance
                                                     evaluation to
                                                     demonstrate initial
                                                     compliance.
2. Option 1: Elect NSPS not   PM emission must not  The average PM
 subject to the NSPS for PM.   exceed 1.0 kg/1,000   emission rate,
                               kg (1.0 lb/1,000      measured using EPA
                               lb) of coke burn-     Method 5B or 5F
                               off in the catalyst   (for a unit without
                               regenerator; if the   a wet scrubber) or
                               discharged gases      5B (for a unit with
                               pass through an       a wet scrubber),
                               incinerator or        over the period of
                               waste heat boiler     the initial
                               in which you burn     performance test,
                               auxiliary or          is no higher than
                               supplemental liquid   1.0 kg/1,000 kg
                               or solid fossil       (1.0 lb/1,000 lb of
                               fuel, the             coke burn-off in
                               incremental rate of   the catalyst
                               PM must not exceed    regenerator. The PM
                               43.0 g/GJ (0.10 lb/   emission rate is
                               million Btu) of       calculated using
                               heat input            Equations 1 and 2
                               attributable to the   of Sec.   63.1564.
                               liquid or solid       If applicable, the
                               fossil fuel; and      average PM emission
                               the opacity of        rate, measured
                               emissions must not    using EPA Method 5B
                               exceed 30 percent,    emission rate,
                               except for one 6-     measured using EPA
                               minute average        Method 5B or 5F
                               opacity reading in    (for a unit without
                               any 1-hour period.    a wet scrubber) or
                                                     Method 5B (for a
                                                     unit with a wet
                                                     scrubber) over the
                                                     period of the
                                                     initial performance
                                                     test, is no higher
                                                     than 43.0 g/GJ
                                                     (0.10 lb/million
                                                     Btu) of heat input
                                                     attributable to the
                                                     liquid or solid
                                                     fossil fuel. The PM
                                                     emission rate is
                                                     calculated using
                                                     Equation 3 of Sec.
                                                      63.1564; no more
                                                     than one 6-minute
                                                     average measured by
                                                     the continuous
                                                     opacity monitoring
                                                     system exceeds 30
                                                     percent opacity in
                                                     any 1-hour period
                                                     over the period of
                                                     the performance
                                                     test; and your
                                                     performance
                                                     evaluation shows
                                                     the continuous
                                                     opacity monitoring
                                                     system meets the
                                                     applicable
                                                     requirements in
                                                     Sec.   63.1572.
3. Option 2: Not subject to   PM emissions must     The average PM
 the NSPS for PM.              not exceed 1.0 kg/    emission rate,
                               1,000 kg (1.0 lb/     measured using EPA
                               1,000 lb) of coke     Method 5B or 5F
                               burn-off in the       (for a unit without
                               catalyst              a wet scrubber) or
                               regenerator.          Method 5B (for a
                                                     unit with a wet
                                                     scrubber), over the
                                                     period of the
                                                     initial performance
                                                     test, is less than
                                                     or equal to 1.0 kg/
                                                     1,000 kg (1.0 lb/
                                                     1,000 lb) of coke
                                                     burn-off in the
                                                     catalyst
                                                     regenerator. The PM
                                                     emission rate is
                                                     calculated using
                                                     Equations 1 and 2
                                                     of Sec.   63.1564;
                                                     and if you use a
                                                     continuous opacity
                                                     monitoring system,
                                                     your performance
                                                     evaluation shows
                                                     the system meets
                                                     the applicable
                                                     requirements in
                                                     Sec.   63.1572.
 

[[Page 6948]]

 
                              * * * * * * *
------------------------------------------------------------------------


0
16. Table 6 to subpart UUU of part 63 is amended by revising entries 1, 
3, and 5 to read as follows:

 Table 6 to Subpart UUU of Part 63--Continuous Compliance With Metal HAP
              Emission Limits for Catalytic Cracking Units
                                * * * * *
------------------------------------------------------------------------
                                 Subject to this
  For each new and existing    emission limit for         You shall
 catalytic cracking unit . .      your catalyst          demonstrate
              .               regenerator vent . .       continuous
                                        .            compliance by . . .
------------------------------------------------------------------------
1. Subject to the NSPS for    a. PM emissions must  i. Determining and
 PM in 40 CFR 60.102.          not exceed 1.0 kg/    recording each day
                               1,000 kg (1.0 lb/     the average coke
                               1,000 lb) of coke     burn-off rate
                               burn-off in the       (thousands of
                               catalyst              kilograms per hour)
                               regenerator; if the   using Equation 1 in
                               discharged gases      Sec.   63.1564 and
                               pass through an       the hours of
                               incinerator or        operation for each
                               waste heat boiler     catalyst
                               in which you burn     regenerator;
                               auxiliary or          maintaining PM
                               supplemental liquid   emission rate below
                               or solid fossil       1.0 kg/1,000 kg
                               fuel, the             (1.0 lb/1,000 lbs)
                               incremental rate of   of coke burn-off;
                               PM must not exceed    if applicable,
                               43.0 g/GJ (0.10 lb/   determining and
                               million Btu) of       recording each day
                               heat input            the rate of
                               attributable to the   combustion of
                               liquid or solid       liquid or solid
                               fossil fuel; and      fossil fuels
                               the opacity of        (liters/hour or
                               emissions must not    kilograms/hour) and
                               exceed 30 percent,    the hours of
                               except for one 6-     operation during
                               minute average        which liquid or
                               opacity reading in    solid fossil-fuels
                               any 1-hour period.    are combusted in
                                                     the incinerator-
                                                     waste heat boiler;
                                                     if applicable,
                                                     maintaining the PM
                                                     rate incinerator
                                                     below 43 g/GJ (0.10
                                                     lb/million Btu) of
                                                     heat input
                                                     attributable to the
                                                     solid or liquid
                                                     fossil fuel;
                                                     collecting the
                                                     continuous opacity
                                                     monitoring data for
                                                     each catalyst
                                                     regenerator vent
                                                     according to Sec.
                                                     63.1572; and
                                                     maintaining each 6-
                                                     minute average at
                                                     or below 30 percent
                                                     except that one 6-
                                                     minute average
                                                     during a 1-hour
                                                     period can exceed
                                                     30 percent.
 
                              * * * * * * *
3. Option 2: PM limit not     PM emissions must     Determining and
 subject to the NSPS for PM.   not exceed 1.0 kg/    recording each day
                               1,000 kg (1.0 lb/     the average coke
                               1,000 lb) of coke     burn-off rate
                               burn-off in the       (thousands of
                               catalyst              kilograms per hour)
                               regenerator.          and the hours of
                                                     operation for each
                                                     catalyst
                                                     regenerator by
                                                     Equation 1 of Sec.
                                                      63.1564 (you can
                                                     use process data to
                                                     determine the
                                                     volumetric flow
                                                     rate); and
                                                     maintaining the PM
                                                     emission rate below
                                                     1.0 kg/1,000 kg
                                                     (1.0 lb/1,000 lb)
                                                     of coke burn-off.
 
                              * * * * * * *
5. Option 4: Ni lb/1,000 lbs  Ni emissions must     Determining and
 of coke burn-off not          not exceed 1.0 mg/    recording each day
 subject to the NSPS for PM.   kg (0.001 lb/1,000    the average coke
                               lbs) of coke burn-    burn-off rate
                               off in the catalyst   (thousands of
                               regenerator.          kilograms per hour)
                                                     and the hours of
                                                     operation for each
                                                     catalyst
                                                     regenerator by
                                                     Equation 1 of Sec.
                                                      63.1564 (you can
                                                     use process data to
                                                     determine the
                                                     volumetric flow
                                                     rate); and
                                                     maintaining Ni
                                                     emission rate below
                                                     1.0 mg/kg (0.001 lb/
                                                     1,000 lbs) of coke
                                                     burn-off in the
                                                     catalyst
                                                     regenerator.
------------------------------------------------------------------------

0
17. Table 7 to subpart UUU of part 63 is revised to read as follows:

[[Page 6949]]



  Table 7 to Subpart UUU of Part 63.--Continuous Compliance With Operating Limits for Metal HAP Emissions From
                                            Catalytic Cracking Units
[As stated in Sec.   63.1564(c)(1), you shall meet each requirement in the following table that applies to you.]
----------------------------------------------------------------------------------------------------------------
                                                                                          You shall demonstrate
  For each new or existing catalytic       If you use . . .        For this operating     continuous compliance
         cracking unit . . .                                          limit . . .                by . . .
----------------------------------------------------------------------------------------------------------------
1. Subject to NSPS for PM in 40 CFR    Continuous opacity       Not applicable.          Complying with Table 6
 60.102.                                monitoring system.                                of this subpart.
2. Option 1: Elect NSPS not subject    Continuous opacity       Not applicable.          Complying with Table 6
 to the NSPS for PM in 40 CFR 60.102.   monitoring system.                                of this subpart.
3. Option 2: PM limit not subject to   a. Continuous opacity    The opacity of           Collecting the hourly
 the NSPS for PM in 40 CFR 60.102.      monitoring system.       emissions from your      average continuous
                                                                 catalyst regenerator     opacity monitoring
                                                                 vent must not exceed     system data according
                                                                 the site-specific        to Sec.   63.1572; and
                                                                 opacity operating        maintaining the hourly
                                                                 limit established        average opacity at or
                                                                 during the performance   below the site-
                                                                 test.                    specific limit.
                                       b. Continuous parameter  i. The daily average     Collecting the hourly
                                        monitoring systems--     gas flow rate entering   and daily average gas
                                        electrostatic            or exiting the control   flow rate monitoring
                                        precipitator.            device must not exceed   data according to Sec.
                                                                 the operating limit        63.1572 1; and
                                                                 established during the   maintaining the daily
                                                                 performance test.        average gas flow rate
                                                                                          at or below the limit
                                                                                          established during the
                                                                                          performance test.
                                                                ii. The daily average    Collecting the hourly
                                                                 voltage and secondary    and daily average
                                                                 current (or total        voltage and secondary
                                                                 power input) to the      current (or total
                                                                 control device must      power input)
                                                                 not fall below the       monitoring data
                                                                 operating limit          according to Sec.
                                                                 established during the   63.1572; and
                                                                 performance test.        maintaining the daily
                                                                                          average voltage and
                                                                                          secondary current (or
                                                                                          total power input) at
                                                                                          or above the limit
                                                                                          established during the
                                                                                          performance test.
                                       c. Continuous parameter  i. The daily average     Collecting the hourly
                                        monitoring systems--     pressure drop across     and daily average
                                        wet scrubber.            the scrubber must not    pressure drop
                                                                 fall below the           monitoring data
                                                                 operating limit          according to Sec.
                                                                 established during the   63.1572; and
                                                                 performance test.        maintaining the daily
                                                                                          average pressure drop
                                                                                          above the limit
                                                                                          established during the
                                                                                          performance test.
                                                                ii. The daily average    Collecting the hourly
                                                                 liquid-to-gas ratio      average gas flow rate
                                                                 must not fall below      and water (or
                                                                 the operating limit      scrubbing liquid) flow
                                                                 established during the   rate monitoring data
                                                                 performance test.        according to Sec.
                                                                                          63.1572 1; determining
                                                                                          and recording the
                                                                                          hourly average liquid-
                                                                                          to-gas ratio;
                                                                                          determining and
                                                                                          recording the daily
                                                                                          average liquid-to-gas
                                                                                          ratio; and maintaining
                                                                                          the daily average
                                                                                          liquid-to-gas ratio
                                                                                          above the limit
                                                                                          established during the
                                                                                          performance test.
4. Option 3: Ni lb/hr not subject to   a. Continuous opacity    The daily average Ni     Collecting the hourly
 the NSPS for PM in 40 CFR 60.102.      monitoring system.       operating value must     average continuous
                                                                 not exceed the site-     opacity monitoring
                                                                 specific Ni operating    system data according
                                                                 limit established        to Sec.   63.1572;
                                                                 during the performance   determining and
                                                                 test.                    recording equilibrium
                                                                                          catalyst Ni
                                                                                          concentration at least
                                                                                          once a week 2;
                                                                                          collecting the hourly
                                                                                          average gas flow rate
                                                                                          monitoring data
                                                                                          according to Sec.
                                                                                          63.1572 1; determining
                                                                                          and recording the
                                                                                          hourly average Ni
                                                                                          operating value using
                                                                                          Equation 11 of Sec.
                                                                                          63.1564; determining
                                                                                          and recording the
                                                                                          daily average Ni
                                                                                          operating value; and
                                                                                          maintaining the daily
                                                                                          average Ni operating
                                                                                          value below the site-
                                                                                          specific Ni operating
                                                                                          limit established
                                                                                          during the performance
                                                                                          test.

[[Page 6950]]

 
                                       b. Continuous parameter  i. The daily average     See item 3.b.i. of this
                                        monitoring systems--     gas flow rate entering   table.
                                        electrostatic            or exiting the control
                                        precipitator.            device must not exceed
                                                                 the operating limit
                                                                 established during the
                                                                 performance test.
                                                                ii. The daily average    See item 3.b.ii. of
                                                                 voltage and secondary    this table.
                                                                 current (or total
                                                                 power input) must not
                                                                 fall below the level
                                                                 established in the
                                                                 performance test.
                                                                iii. The monthly         Determining and
                                                                 rolling average of the   recording the
                                                                 equilibrium catalyst     equilibrium catalyst
                                                                 Ni concentration must    Ni concentration at
                                                                 not exceed the level     least once a week 2;
                                                                 established during the   determining and
                                                                 performance test.        recording the monthly
                                                                                          rolling average of the
                                                                                          equilibrium catalyst
                                                                                          Ni concentration once
                                                                                          each week using the
                                                                                          weekly or most recent
                                                                                          value; and maintaining
                                                                                          the monthly rolling
                                                                                          average below the
                                                                                          limit established in
                                                                                          the performance test.
                                       c. Continuous parameter  i. The daily average     See item 3.c.i. of this
                                        monitoring systems--     pressure drop must not   table.
                                        wetscrubber.             fall below the
                                                                 operating limit
                                                                 established in the
                                                                 performance test.
                                                                ii. The daily average    See item 3.c.ii. of
                                                                 liquid-to-gas ratio      this table.
                                                                 must not fall below
                                                                 the operating limit
                                                                 established during the
                                                                 performance test.
                                                                iii. The monthly         Determining and
                                                                 rolling average          recording the
                                                                 equilibrium catalyst     equilibrium catalyst
                                                                 Ni concentration must    Ni concentration at
                                                                 not exceed the level     least once a week2;
                                                                 established during the   determining and
                                                                 performance test.        recording the monthly
                                                                                          rolling average of
                                                                                          equilibrium catalyst
                                                                                          Ni concentration once
                                                                                          each week using the
                                                                                          weekly or most recent
                                                                                          value; and maintaining
                                                                                          the monthly rolling
                                                                                          average below the
                                                                                          limit established in
                                                                                          the performance test.
5. Option 4: Ni lb/ton of coke burn-   a. Continuous opacity    The daily average Ni     Collecting the hourly
 off not subject to the NSPS for PM     monitoring system.       operating value must     average continuous
 in 40 CFR 60.102.                                               not exceed the site-     opacity monitoring
                                                                 specific Ni operating    system data according
                                                                 limit established        to Sec.   63.1572;
                                                                 during the performance   collecting the hourly
                                                                 test.                    average gas flow rate
                                                                                          monitoring data
                                                                                          according to Sec.
                                                                                          63.1572 <SUP>1</SUP>; determining
                                                                                          and recording
                                                                                          equilibrium catalyst
                                                                                          Ni concentration at
                                                                                          least once a week 2;
                                                                                          determining and
                                                                                          recording the hourly
                                                                                          average Ni operating
                                                                                          value using Equation
                                                                                          12 of Sec.   63.1564;
                                                                                          determining and
                                                                                          recording the daily
                                                                                          average Ni operating
                                                                                          value; and maintaining
                                                                                          the daily average Ni
                                                                                          operating value below
                                                                                          the site-specific Ni
                                                                                          operating limit
                                                                                          established during the
                                                                                          performance test.
                                       b. Continuous parameter  i. The daily average     See item 3.b.i. of this
                                        monitoring systems--     gas flow rate to the     table.
                                        electrostatic            control device must
                                        precipitator.            not exceed the level
                                                                 established in the
                                                                 performance test.

[[Page 6951]]

 
                                                                ii. The daily average    See item 3.b.ii. of
                                                                 voltage and secondary    this table.
                                                                 current (or total
                                                                 power input) must not
                                                                 fall below the level
                                                                 established in the
                                                                 performance test.
                                                                iii. The monthly         See item 4.b.iii. of
                                                                 rolling average          this table.
                                                                 equilibrium catalyst
                                                                 Ni concentration must
                                                                 not exceed the level
                                                                 established during the
                                                                 performance test.
                                       c. Continuous parameter  i. The daily average     See item 3.c.i. of this
                                        monitoring systems--     pressure drop must not   table.
                                        wet scrubber.            fall below the
                                                                 operating limit
                                                                 established in the
                                                                 performance test.
                                                                ii. The daily average    See item 3.c.ii. of
                                                                 liquid-to-gas ratio      this table.
                                                                 must not fall below
                                                                 the operating limit
                                                                 established during the
                                                                 performance test.
                                                                iii. The monthly         See item 4.c.iii. of
                                                                 rolling average          this table.
                                                                 equilibrium catalyst
                                                                 Ni concentration must
                                                                 not exceed the level
                                                                 established during the
                                                                 performance test.
----------------------------------------------------------------------------------------------------------------
\1\ If applicable, you can use the alternative in Sec.   63.1573(a)(1) for gas flow rate instead of a continuous
  parameter monitoring system if you used the alternative method in the initial performance test.
\2\ The equilibrium catalyst Ni concentration must be measured by the procedure, Determination of Metal
  Concentration on Catalyst Particles (Instrumental Analyzer Procedure) in appendix A to this subpart; or by EPA
  Method 6010B, Inductively Coupled Plasma-Atomic Emission Spectrometry, EPA Method 6020, Inductively Coupled
  Plasma-Mass Spectrometry, EPA Method 7520, Nickel Atomic Absorption, Direct Aspiration, or EPA Method 7521,
  Nickel Atomic Absorption, Direct Aspiration; or by an alternative to EPA Method 6010B, 6020, 7520, or 7521
  satisfactory to the Administrator. The EPA Methods 6010B, 6020, 7520, and 7521 are included in ``Test Methods
  for Evaluating Solid Waste, Physical/Chemical Methods,'' EPA Publication SW-846, Revision 5 (April 1998). The
  SW-846 and Updates (document number 955-001-00000-1) are available for purchase from the Superintendent of
  Documents, U.S. Government Printing Office, Washington, DC 20402, (202) 512-1800; and from the National
  Technical Information Services (NTIS), 5285 Port Royal Road, Springfield, VA 22161, (703) 487-4650. Copies may
  be inspected at the EPA Docket Center (Air Docket), EPA West, Room B-108, 1301 Constitution Ave., NW.,
  Washington, DC; or at the Office of the Federal Register, 800 North Capitol Street, NW., Suite 700,
  Washington, DC. These methods are also available at http://www.epa.gov/epaoswer/hazwaste/test/main.htm.


0
18. Table 15 to subpart UUU of part 63 is amended by revising the 
heading in column 1 and 2 and by revising entry 2 as follows:

  Table 15 to Subpart UUU of Part 63.--Organic HAP Emission Limits for
                        Catalytic Reforming Units
                                * * * * *
------------------------------------------------------------------------
                                           You shall meet this emission
 For each applicable process vent for a   limit during initial catalyst
  new or existing catalytic reforming       depressuring and catalyst
               unit . . .                    purging operations . . .
------------------------------------------------------------------------
 
                              * * * * * * *
2. Option 2............................  Reduce uncontrolled emissions
                                          of total organic compounds
                                          (TOC) or nonmethane TOC from
                                          your process vent by 98
                                          percent by weight using a
                                          control device or to a
                                          concentration of 20 ppmv (dry
                                          basis as hexane), corrected to
                                          3 percent oxygen, whichever is
                                          less stringent. If you vent
                                          emissions to a boiler or
                                          process heater to comply with
                                          the percent reduction or
                                          concentration emission
                                          limitation, the vent stream
                                          must be introduced into the
                                          flame zone, or any other
                                          location that will achieve the
                                          percent reduction or
                                          concentration standard.
------------------------------------------------------------------------


0
19. Table 16 to subpart UUU of part 63 is amended by revising the 
heading in column 3 and by revising entry 2 as follows:

[[Page 6952]]



  Table 16 to Subpart UUU of Part 63.--Operating Limits for Organic HAP
                Emissions From Catalytic Reforming Units
                                * * * * *
------------------------------------------------------------------------
                                                     You shall meet this
                                                       operating limit
  For each new or existing                             during initial
 catalytic  reforming unit .    For this type of          catalyst
             . .              control device . . .    depressuring and
                                                    purging operations .
                                                             . .
------------------------------------------------------------------------
 
                              * * * * * * *
2. Option 2: Percent          a. Thermal            The daily average
 reduction or concentration    incinerator, boiler   combustion zone
 limit.                        or process heater     temperature must
                               with a design heat    not fall below the
                               input capacity        limit established
                               under 44 MW, or       during the
                               boiler or process     performance test.
                               heater in which all
                               vent streams are
                               not introduced into
                               the flame zone.
                              b. No control device  Operate at all times
                                                     according to your
                                                     operation,
                                                     maintenance, and
                                                     monitoring plan
                                                     regarding minimum
                                                     catalyst purging
                                                     conditions that
                                                     must be met prior
                                                     to allowing
                                                     uncontrolled purge
                                                     releases.
------------------------------------------------------------------------


0
20. Table 17 to subpart UUU of part 63 is amended by revising the 
heading in column 1 as follows:

   Table 17 to Subpart UUU of Part 63.-Continuous Monitoring Systems for Organic HAP Emissions From Catalytic
                                                 Reforming Units
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------
For each applicable process vent for                                         You shall install and operate this
     a new or existing catalytic         If you use this type of control    type of continuous monitoring system
        reforming unit . . .                      device . . .                              . . .
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------

0
21. Table 18 to subpart UUU of part 63 is amended by revising entry 1 
and 2 as follows:

Table 18 to Subpart UUU of Part 63.--Requirements for Performance Tests for Organic HAP Emissions From Catalytic
                                                 Reforming Units
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------
  For each new or existing catalytic                                                        According to these
         reforming unit . . .              You shall . . .            Using . . .           requirements . . .
----------------------------------------------------------------------------------------------------------------
1. Option 1: Vent to a flare.........  a. Conduct visible       Method 22 (40 CFR part   2-hour observation
                                        emission observations.   60, appendix A).         period. Record the
                                                                                          presence of a flame at
                                                                                          the pilot light over
                                                                                          the full period of the
                                                                                          test.
                                       b. Determine that the    Not applicable.          40 CFR 63.11(b)(6)
                                        flare meets the                                   through (8).
                                        requirements for net
                                        heating value of the
                                        gas being combusted
                                        and exit velocity.
2. Option 2: Percent reduction or      a. Select sampling site  Method 1 or 1A (40 CFR   Sampling sites must be
 concentration limit.                                            part 60, appendix A).    located at the inlet
                                                                 No traverse site         (if you elect the
                                                                 selection method is      emission reduction
                                                                 needed for vents         standard) and outlet
                                                                 smaller than 0.10        of the control device
                                                                 meter in diameter.       and prior to any
                                                                                          releases to the
                                                                                          atmosphere.
                                       b. Measure gas           Method 2, 2A, 2C, 2D,
                                        volumetric flow rate.    2F, or 2G (40 CFR part
                                                                 60, appendix A), as
                                                                 applicable.

[[Page 6953]]

 
                                       c. Measure TOC           Method 25 (40 part 60,   Take either an
                                        concentration (for       appendix A) to measure   integrated sample or
                                        percent reduction        nonmethane TOC           four grab samples
                                        standard).               concentration (in        during each run. If
                                                                 carbon equivalents) at   you use a grab
                                                                 inlet and outlet of      sampling technique,
                                                                 the control device. If   take the samples at
                                                                 the nonmethane TOC       approximately equal
                                                                 outlet concentration     intervals in time,
                                                                 is expected to be less   such as 15-minute
                                                                 than 50 ppm (as          intervals during the
                                                                 carbon), you can use     run.
                                                                 Method 25A to measure
                                                                 TOC concentration (as
                                                                 hexane) at the inlet
                                                                 and the outlet of the
                                                                 control device. If you
                                                                 use Method 25A, you
                                                                 may use Method 18 (40
                                                                 CFR part 60, appendix
                                                                 A) to measure the
                                                                 methane concentration
                                                                 to determine the
                                                                 nonmethane TOC
                                                                 concentration.
                                       d. Calculate TOC or      .......................  Calculate emission rate
                                        nonmethane TOC                                    by Equation 1 of Sec.
                                        emission rate and mass                             63.1566 (if you use
                                        emission reduction.                               Method 25) or Equation
                                                                                          2 of Sec.   63.1566
                                                                                          (if you use Method
                                                                                          25A). Calculate mass
                                                                                          emission reduction by
                                                                                          Equation 3 of Sec.
                                                                                          63.1566.
                                       e. For concentration     Method 25A (40 CFR part
                                        standard, measure TOC    60, appendix A) to
                                        concentration.           measure TOC
                                        (Optional: Measure       concentration (as
                                        methane                  hexane) at the outlet
                                        concentration.)          of the control device.
                                                                 You may elect to use
                                                                 Method 18 (40 CFR part
                                                                 60, appendix A) to
                                                                 measure the methane
                                                                 concentration.
                                       f. Determine oxygen      Method 3A or 3B (40 CFR
                                        content in the gas       part 60, appendix A),
                                        stream at the outlet     as applicable.
                                        of the control device.
                                       g. Calculate the TOC or  Equation 4 of Sec.
                                        nonmethane TOC           63.1566.
                                        concentration
                                        corrected for oxygen
                                        content (for
                                        concentration
                                        standard).
                                       h. Establish each        Data from the            Collect the temperature
                                        operating limit in       continuous parameter     monitoring data every
                                        Table 16 of this         monitoring systems.      15 minutes during the
                                        subpart that applies                              entire period of the
                                        to you for a thermal                              initial TOC
                                        incinerator, or                                   performance test.
                                        process heater or                                 Determine and record
                                        boiler with a design                              the minimum hourly
                                        heat input capacity                               average combustion
                                        under 44 MW, or                                   zone temperature.
                                        process heater or
                                        boiler in which all
                                        vent streams are not
                                        introduced into flame
                                        zone.
                                       i. If you do not use a   Data from monitoring     Procedures in the
                                        control device,          systems as identified    operation,
                                        document the purging     in the operation,        maintenance, and
                                        conditions used prior    maintenance, and         monitoring plan.
                                        to testing following     monitoring plan.
                                        the minimum
                                        requirements in the
                                        operation,
                                        maintenance, and
                                        monitoring plan.
----------------------------------------------------------------------------------------------------------------

0
22. Table 19 to subpart UUU of part 63 is revised as follows:

[[Page 6954]]



Table 19 to Subpart UUU of Part 63.--Initial Compliance With Organic HAP
              Emission Limits for Catalytic Reforming Units
 [As stated in Sec.   63.1566(b)(7), you shall meet each requirement in
                the following table that applies to you.]
------------------------------------------------------------------------
 For each applicable process
 vent for a new or existing     For the following         You have
catalytic reforming unit . .  emission limit . . .  demonstrated initial
              .                                      compliance if . . .
------------------------------------------------------------------------
Option 1....................  Visible emissions     Visible emissions,
                               from a flare must     measured using
                               not exceed a total    Method 22 over the
                               of 5 minutes during   2-hour observation
                               any 2 consecutive     period of the
                               hours.                performance test,
                                                     do not exceed a
                                                     total of 5 minutes.
Option 2....................  Reduce uncontrolled   The mass emission
                               emissions of total    reduction of
                               organic compounds     nonmethane TOC
                               (TOC) or nonmethane   measured by Method
                               TOC from your         25 over the period
                               process vent by 98    of the performance
                               percent by weight     test is at least 98
                               using a control       percent by weight
                               device or to a        as calculated using
                               concentration of 20   Equations 1 and 3
                               ppmv (dry basis as    of Sec.   63.1566;
                               hexane), corrected    or the mass
                               to 3 percent          emission reduction
                               oxygen, whichever     of TOC measured by
                               is less stringent.    Method 25A (or
                                                     nonmethane TOC
                                                     measured by Methods
                                                     25A and 18) over
                                                     the period of the
                                                     performance test is
                                                     at least 98 percent
                                                     by weight as
                                                     calculated using
                                                     Equations 2 and 3
                                                     of Sec.   63.1566;
                                                     or the TOC
                                                     concentration
                                                     measured by Method
                                                     25A (or the
                                                     nonmethane TOC
                                                     concentration
                                                     measured by Methods
                                                     25A and 18) over
                                                     the period of the
                                                     performance test
                                                     does not exceed 20
                                                     ppmv (dry basis as
                                                     hexane) corrected
                                                     to 3 percent oxygen
                                                     as calculated using
                                                     Equation 4 of Sec.
                                                      63.1566.
------------------------------------------------------------------------


0
23. Table 20 to subpart UUU of part 63 is revised as follows:

 Table 20 to Subpart UUU of Part 63.--Continuous Compliance With Organic
            HAP Emission Limits for Catalytic Reforming Units
 [As stated in Sec.   63.1566(c)(1), you shall meet each requirement in
                the following table that applies to you.]
------------------------------------------------------------------------
                                                          You shall
                                                         demonstrate
 For each applicable process                             continuous
 vent for a new or existing     For this emission     compliance during
catalytic reforming unit . .       limit . . .        initial catalyst
              .                                       depressuring and
                                                      catalyst purging
                                                     operations by . . .
------------------------------------------------------------------------
1. Option 1.................  Vent emissions from   Maintaining visible
                               your process vent     emissions from a
                               to a flare that       flare below a total
                               meets the             of 5 minutes during
                               requirements in       any 2 consecutive
                               Sec.   63.11(b).      hours.
2. Option 2.................  Reduce uncontrolled   Maintaining a 98
                               emissions of total    percent by weight
                               organic compounds     emission reduction
                               (TOC) or nonmethane   of TOC or
                               TOC from your         nonmethane TOC; or
                               process vent by 98    maintaining a TOC
                               percent by weight     or nonmethane TOC
                               using a control       concentration of
                               device or to a        not more than 20
                               concentration of 20   ppmv (dry basis as
                               ppmv (dry basis as    hexane), corrected
                               hexane), corrected    to 3 percent
                               to 3 percent          oxygen, whichever
                               oxygen, whichever     is less stringent.
                               is less stringent.
------------------------------------------------------------------------


0
24. Table 21 to Subpart UUU of part 63 is revised as follows:

 Table 21 to Subpart UUU of Part 63.--Continuous Compliance With Operating Limits for Organic HAP Emissions From
                                            Catalytic Reforming Units
[As stated in Sec.   63.1566(c)(1), you shall meet each requirement in the following table that applies to you.]
----------------------------------------------------------------------------------------------------------------
                                                                                          You shall demonstrate
                                                                                          continuous compliance
 For each applicable process vent for                              For this operating    during initial catalyst
a new or existing catalytic reforming      If you use . . .           limit . . .            depressuring and
              unit . . .                                                                 purging operations by .
                                                                                                   . .
----------------------------------------------------------------------------------------------------------------
1. Option 1..........................  Flare that meets the     The flare pilot light    Collecting flare
                                        requirements in Sec.     must be present at all   monitoring data
                                        63.11(b).                times and the flare      according to Sec.
                                                                 must be operating at     63.1572; and recording
                                                                 all times that           for each 1-hour period
                                                                 emissions may be         whether the monitor
                                                                 vented to it.            was continuously
                                                                                          operating and the
                                                                                          pilot light was
                                                                                          continuously present
                                                                                          during each 1-hour
                                                                                          period.

[[Page 6955]]

 
2. Option 2..........................  a. Thermal incinerator   Maintain the daily       Collecting, the hourly
                                        boiler or process        average combustion       and daily temperature
                                        heater with a design     zone temperature above   monitoring data
                                        input capacity under     the limit established    according to Sec.
                                        44 MW or boiler or       during the performance   63.1572; and
                                        process heater in        test.                    maintaining the daily
                                        which not all vent                                average combustion
                                        streams are not                                   zone temperature above
                                        introduced into the                               the limit established
                                        flame zone.                                       during the performance
                                                                                          test.
                                       b. No control device...  Operate at all times     Recording information
                                                                 according to your        to document compliance
                                                                 operation,               with the procedures in
                                                                 maintenance, and         your operation,
                                                                 monitoring plan          maintenance, and
                                                                 regarding minimum        monitoring plan.
                                                                 purging conditions
                                                                 that must be met prior
                                                                 to allowing
                                                                 uncontrolled purge
                                                                 releases.
----------------------------------------------------------------------------------------------------------------


0
25. Table 22 to subpart UUU of part 63 is revised as follows:

 Table 22 to Subpart UUU of Part 63.--Inorganic HAP Emission Limits for
                        Catalytic Reforming Units
    [As stated in Sec.   63.1567(a)(1), you shall meet each emission
         limitation in the following table that applies to you.]
------------------------------------------------------------------------
                                           You shall meet this emission
                                            limit for each applicable
                                             catalytic reforming unit
               For . . .                  process vent during coke burn-
                                         off and catalyst rejuvenation .
                                                       . .
------------------------------------------------------------------------
1. Each existing semi-regenerative       Reduce uncontrolled emissions
 catalytic reforming unit.                of hydrogen chloride (HCl) by
                                          92 percent by weight or to a
                                          concentration of 30 ppmv (dry
                                          basis), corrected to 3 percent
                                          oxygen.
2. Each existing cyclic or continous     Reduce uncontrolled emissions
 catalytic reforming unit.                of HCl by 97 percent by weight
                                          or to a concentration of 10
                                          ppmv (dry basis), corrected to
                                          3 percent oxygen.
3. Each new semi-regenerative, cyclic,   Reduce uncontrolled emissions
 or continous catalytic reforming unit.   of HCl by 97 percent by weight
                                          or to a concentration of 10
                                          ppmv (dry basis), corrected to
                                          3 percent oxygen.
------------------------------------------------------------------------


0
26. Table 23 to subpart UUU of part 63 is revised as follows:

 Table 23 to Subpart UUU of Part 63.--Operating Limits for Inorganic HAP
                Emissions From Catalytic Reforming Units
 [As stated in Sec.   63.1567(a)(2), you shall meet each operating limit
              in the following table that applies to you.]
------------------------------------------------------------------------
 For each applicable process vent
  for a new or existing catalytic    You shall meet this operating limit
 reforming unit with this type of     during coke burn-off and catalyst
       control device . . .                  rejuvenation . . .
------------------------------------------------------------------------
1. Wet scrubber...................  The daily average pH or alkalinity
                                     of the water (or scrubbing liquid)
                                     exiting the scrubber must not fall
                                     below the limit established during
                                     the performance test; and the daily
                                     average liquid-to-gas ratio must
                                     not fall below the limit
                                     established during the performance
                                     test.
2. Internal scrubbing system or no  The daily average HCl concentration
 control device (e.g., hot regen     in the catalyst regenerator exhaust
 system) meeting outlet HCl          gas must not exceed the limit
 concentration limit.                established during the performance
                                     test.
3. Internal scrubbing system        The daily average pH or alkalinity
 meeting HCl percent reduction       of the water (or scrubbing liquid)
 standard.                           exiting the internal scrubbing
                                     system must not fall below the
                                     limit established during the
                                     performance test; and the daily
                                     average liquid-to-gas ratio must
                                     not fall below the limit
                                     established during the performance
                                     test.
4. Fixed-bed gas-solid adsorption   The daily average temperature of the
 system.                             gas entering or exiting the
                                     adsorption system must not exceed
                                     the limit established during the
                                     performance test; and the HCl
                                     concentration in the adsorption
                                     system exhaust gas must not exceed
                                     the limit established during the
                                     performance test.

[[Page 6956]]

 
5. Moving-bed gas-solid adsorption  The daily average temperature of the
 system (e.g., ChlorsorbTM           gas entering or exiting the
 System).                            adsorption system must not exceed
                                     the limit established during the
                                     performance test; and the weekly
                                     average chloride level on the
                                     sorbent entering the adsorption
                                     system must not exceed the design
                                     or manufacturer's recommended limit
                                     (1.35 weight percent for the
                                     ChlorsorbTM System); and the weekly
                                     average chloride level on the
                                     sorbent leaving the adsorption
                                     system must not exceed the design
                                     or manufacturer's recommended limit
                                     (1.8 weight percent for the
                                     ChlorsorbTM System).
------------------------------------------------------------------------


0
27. Table 24 to subpart UUU of part 63 is revised as follows:

 Table 24 to Subpart UUU of Part 63.--Continuous Monitoring Systems for
         Inorganic HAP Emissions From Catalytic Reforming Units
 [As stated in Sec.   63.1567(b)(1), you shall meet each requirement in
                the following table that applies to you.]
------------------------------------------------------------------------
                                          You shall install and operate
 If you use this type of control device      this type of continuous
          for your vent . . .                monitoring system . . .
------------------------------------------------------------------------
1. Wet scrubber........................  Continuous parameter monitoring
                                          system to measure and record
                                          the total water (or scrubbing
                                          liquid) flow rate entering the
                                          scrubber during coke burn-off
                                          and catalyst rejuvenation; and
                                          continuous parameter
                                          monitoring system to measure
                                          and record gas flow rate
                                          entering or exiting the
                                          scrubber during coke burn-off
                                          and catalyst rejuvenation \1\;
                                          and continuous parameter
                                          monitoring system to measure
                                          and record the pH or
                                          alkalinity of the water (or
                                          scrubbing liquid) exiting the
                                          scrubber during coke burn-off
                                          and catalyst rejuvenation. \2\
2. Internal scrubbing system or no       Colormetric tube sampling
 control device (e.g., hot regen          system to measure the HC1
 system) to meet HC1 outlet               concentration in the catalyst
 concentration limit.                     regenerator exhaust gas during
                                          coke burn-off and catalyst
                                          rejuvenation. The colormetric
                                          tube sampling system must meet
                                          the requirements in Table 41
                                          of this subpart.
3. Internal scrubbing system to meet     Continuous parameter monitoring
 HC1 percent reduction standard.          system to measure and record
                                          the gas flow rate entering or
                                          exiting the internal scrubbing
                                          system during coke burn-off
                                          and catalyst rejuvenation; and
                                          continuous parameter
                                          monitoring system to measure
                                          and record the total water (or
                                          scrubbing liquid) flow rate
                                          entering the internal
                                          scrubbing system during coke
                                          burn-off and catalyst
                                          rejuvenation; and continuous
                                          parameter monitoring system to
                                          measure and record the pH or
                                          alkalinity of the water (or
                                          scrubbing liquid) exiting the
                                          internal scrubbing system
                                          during coke burn-off and
                                          catalyst rejuvenation. \2\
4. Fixed-bed gas-solid adsorption        Continuous parameter monitoring
 system.                                  system to measure and record
                                          the temperature of the gas
                                          entering or exiting the
                                          adsorption system during coke
                                          burn-off and catalyst
                                          rejuvenation; and colormetric
                                          tube sampling system to
                                          measure the gaseous HC1
                                          concentration in the
                                          adsorption system exhaust and
                                          at a point within the
                                          absorbent bed not to exceed 90
                                          percent of the total length of
                                          the absorbent bed during coke
                                          burn-off and catalyst
                                          rejuvenation. The colormetric
                                          tube sampling system must meet
                                          the requirements in Table 41
                                          of this subpart.
5. Moving-bed gas-solid adsorption       Continuous parameter monitoring
 system (e.g., ChlorsorbTM System)..      system to measure and record
                                          the temperature of the gas
                                          entering or exiting the
                                          adsorption system during coke
                                          burn-off and catalyst
                                          rejuvenation.
------------------------------------------------------------------------
\1\ If applicable, you can use the alternative in Sec.   63.1573 (a)(1)
  instead of a continuous parameter monitoring system for gas flow rate
  or instead of a continuous parameter monitoring system for the
  cumulative volume of gas.
\2\ If applicable, you can use the alternative in Sec.   63.1573(b)(1)
  instead of a continuous parameter monitoring system for pH of the
  water (or scrubbing liquid) or the alternative in Sec.   63.1573(b)(2)
  instead of a continuous parameter monitoring system for alkalinity of
  the water (or scrubbing liquid).


0
28. Table 25 to subpart UUU of part 63 is revised as follows:

[[Page 6957]]



     Table 25 to Subpart UUU of Part 63.--Requirements for Performance Tests for Inorganic HAP Emissions for
                                            Catalytic Reforming Units
 [As stated in Sec.   63.1567(b)(2) and (3), you shall meet each requirement in the following table that applies
                                                    to you.]
----------------------------------------------------------------------------------------------------------------
For each new and existing catalytic
     reforming unit using . . .          You shall . . .           Using . . .            According to these
                                                                                          requirements . . .
----------------------------------------------------------------------------------------------------------------
1. Any or no control system........  a. Select sampling      Method 1 or 1A (40 CFR  (1) If you operate a
                                      port location(s) and    part 60, appendix A),   control device and you
                                      the number of           as applicable.          elect to meet an
                                      traverse points.                                applicable HCl percent
                                                                                      reduction standard,
                                                                                      sampling sites must be
                                                                                      located at the inlet of
                                                                                      the control device or
                                                                                      internal scrubbing system
                                                                                      and at the outlet of the
                                                                                      control device or internal
                                                                                      scrubber system prior to
                                                                                      any release to the
                                                                                      atmosphere. For a series
                                                                                      of fixed-bed systems, the
                                                                                      outlet sampling site
                                                                                      should be located at the
                                                                                      outlet of the first fixed-
                                                                                      bed, prior to entering the
                                                                                      second fixed-bed in the
                                                                                      series.
                                                                                     (2) If you elect to meet an
                                                                                      applicable HCl outlet
                                                                                      concentration limit,
                                                                                      locate sampling sites at
                                                                                      the outlet of the control
                                                                                      device or internal
                                                                                      scrubber system prior to
                                                                                      any release to the
                                                                                      atmosphere. For a series
                                                                                      of fixed-bed systems, the
                                                                                      outlet sampling site
                                                                                      should be located at the
                                                                                      outlet of the first fixed-
                                                                                      bed, prior to entering the
                                                                                      second fixed-bed in the
                                                                                      series. If there is no
                                                                                      control device, locate
                                                                                      sampling sites at the
                                                                                      outlet of the catalyst
                                                                                      regenerator prior to any
                                                                                      release to the atmosphere.
                                     b. Determine velocity   Method 2, 2A, 2C, 2D,
                                      and volumetric flow     2F, or 2G (40 CFR
                                      rate.                   part 60, appendix A),
                                                              as applicable..
                                     c. Conduct gas          Method 3, 3A, or 3B
                                      molecular weight        (40 CFR part 60,
                                      analysis.               appendix A), as
                                                              applicable.
                                     d. Measure moisture     Method 4 (40 CFR part
                                      content of the stack    60, appendix A).
                                      gas.
                                     e. Measure the HCl      Method 26 or 26A (40    (1) For semi-regenerative
                                      concentration at the    CFR part 60, appendix   and cyclic regeneration
                                      selected sampling       A). If your control     units, conduct the test
                                      locations.              device is a wet         during the coke burn-off
                                                              scrubber or internal    and catalyst rejuvenation
                                                              scrubbing system, you   cycle, but collect no
                                                              must use Method 26A.    samples during the first
                                                                                      hour or the last 6 hours
                                                                                      of the cycle (for semi-
                                                                                      regenerative units) or
                                                                                      during the first hour or
                                                                                      the last 2 hours of the
                                                                                      cycle (for cyclic
                                                                                      regeneration units). For
                                                                                      continuous regeneration
                                                                                      units, the test should be
                                                                                      conducted no sooner than 3
                                                                                      days after process unit or
                                                                                      control system start up.
                                                                                     (2) Determine and record
                                                                                      the HCl concentration
                                                                                      corrected to 3 percent
                                                                                      oxygen (using Equation 1
                                                                                      of Sec.   63.1567) for
                                                                                      each sampling location for
                                                                                      each test run.
                                                                                     (3) Determine and record
                                                                                      the percent emission
                                                                                      reduction, if applicable,
                                                                                      using Equation 3 of Sec.
                                                                                      63.1567 for each test run.
                                                                                     (4) Determine and record
                                                                                      the average HCl
                                                                                      concentration (corrected
                                                                                      to 3 percent oxygen) and
                                                                                      the average percent
                                                                                      emission reduction, if
                                                                                      applicable, for the
                                                                                      overall source test from
                                                                                      the recorded test run
                                                                                      values.
2. Wet scrubber....................  a. Establish operating  i. Data from            Measure and record the pH
                                      limit for pH level or   continuous parameter    or alkalinity of the water
                                      alkalinity.             monitoring systems.     (or scrubbing liquid)
                                                                                      exiting scrubber every 15
                                                                                      minutes during the entire
                                                                                      period of the performance
                                                                                      test. Determine and record
                                                                                      the minimum hourly average
                                                                                      pH or alkalinity level
                                                                                      from the recorded values.
                                                              ii. Alternative pH     Measure and record the pH
                                                              procedure in Sec.       of the water (or scrubbing
                                                              63.1573 (b)(1).         liquid) exiting the
                                                                                      scrubber during coke burn-
                                                                                      off and catalyst
                                                                                      rejuvenation using pH
                                                                                      strips at least three
                                                                                      times during each test
                                                                                      run. Determine and record
                                                                                      the average pH level for
                                                                                      each test run. Determine
                                                                                      and record the minimum
                                                                                      test run average pH level.

[[Page 6958]]

 
                                                             iii. Alternative        Measure and record the
                                                              alkalinity method in    alkalinity of the water
                                                              Sec.   63.1573(b)(2).   (or scrubbing liquid)
                                                                                      exiting the scrubber
                                                                                      during coke burn-off and
                                                                                      catalyst rejuvenation
                                                                                      using discrete titration
                                                                                      at least three times
                                                                                      during each test run.
                                                                                      Determine and record the
                                                                                      average alkalinity level
                                                                                      for each test run.
                                                                                      Determine and record the
                                                                                      minimum test run average
                                                                                      alkalinity level.
                                     b. Establish operating  i. Data from            Measure and record the gas
                                      limit for liquid-to-    continuous parameter    flow rate entering or
                                      gas ratio.              monitoring systems.     exiting the scrubber and
                                                                                      the total water (or
                                                                                      scrubbing liquid) flow
                                                                                      rate entering the scrubber
                                                                                      every 15 minutes during
                                                                                      the entire period of the
                                                                                      performance test.
                                                                                      Determine and record the
                                                                                      hourly average gas flow
                                                                                      rate and total water (or
                                                                                      scrubbing liquid) flow
                                                                                      rate. Determine and record
                                                                                      the minimum liquid-to-gas
                                                                                      ratio from the recorded,
                                                                                      paired values.
                                                             ii. Alternative         Collect air flow rate
                                                              procedure for gas       monitoring data or
                                                              flow rate in Sec.       determine the air flow
                                                              63.1573(a)(1).          rate using control room
                                                                                      instruments every 15
                                                                                      minutes during the entire
                                                                                      period of the initial
                                                                                      performance test.
                                                                                      Determine and record the
                                                                                      hourly average rate of all
                                                                                      the readings. Determine
                                                                                      and record the maximum gas
                                                                                      flow rate using Equation 1
                                                                                      of Sec.   63.1573.
3. Internal scrubbing system or no   Establish operating     Data from continuous    Measure and record the HCl
 control device (e.g., hot regen      limit for HCl           parameter monitoring    concentration in the
 system) meeting HCl outlet           concentration.          system.                 catalyst regenerator
 concentration limit.                                                                 exhaust gas using the
                                                                                      colormetric tube sampling
                                                                                      system at least three
                                                                                      times during each test
                                                                                      run. Determine and record
                                                                                      the average HCl
                                                                                      concentration for each
                                                                                      test run. Determine and
                                                                                      record the average HCl
                                                                                      concentration for the
                                                                                      overall source test from
                                                                                      the recorded test run
                                                                                      averages. Determine and
                                                                                      record the operating limit
                                                                                      for HCl concentration
                                                                                      using Equation 4 of Sec.
                                                                                      63.1567.
4. Internal scrubbing system         a. Establish operating  i. Data from            Measure and record the pH
 meeting HCl percent reduction        limit for pH level or   continuous parameter    alkalinity of the water
 standard.                            alkalinity.             monitoring system.      (or scrubbing liquid)
                                                                                      exiting the internal
                                                                                      scrubbing system every 15
                                                                                      minutes during the entire
                                                                                      period of the performance
                                                                                      test. Determine and record
                                                                                      the minimum hourly average
                                                                                      pH or alkalinity level
                                                                                      from the recorded values.
                                                             ii. Alternative pH      Measure and in record pH of
                                                              method in Sec.          the water (or scrubbing
                                                              63.1573(b)(1).          liquid) exiting the
                                                                                      internal scrubbing system
                                                                                      during coke burn-off and
                                                                                      catalyst rejuvenation
                                                                                      using pH strips at least
                                                                                      three times during each
                                                                                      test run. Determine and
                                                                                      record the average pH
                                                                                      level for each test run.
                                                                                      Determine and record the
                                                                                      minimum test run average
                                                                                      pH level.
                                                             iii. Alternative        Measure and record the
                                                              alkalinity method in    alkalinity water (or
                                                              Sec.   63.1573(b)(2).   scrubbing liquid) exiting
                                                                                      the internal scrubbing
                                                                                      system during coke burn-
                                                                                      off and catalyst
                                                                                      rejuvenation using
                                                                                      discrete titration at
                                                                                      least three times during
                                                                                      each test run. Determine
                                                                                      and record the average
                                                                                      alkalinity level for each
                                                                                      test run. Determine and
                                                                                      record the minimum test
                                                                                      run average alkalinity
                                                                                      level.
                                     b. Establish operating  Data from continuous    Measure and record the gas
                                      limit for liquid-to-    parameter monitoring    entering or exiting the
                                      gas ratio.              systems.                internal scrubbing system
                                                                                      and the total water (or
                                                                                      scrubbing liquid) flow
                                                                                      rate entering the internal
                                                                                      scrubbing system every 15
                                                                                      minutes during the entire
                                                                                      period of the performance
                                                                                      test. Determine and record
                                                                                      the hourly average gas
                                                                                      flow rate and total water
                                                                                      (or scrubbing liquid) flow
                                                                                      rate. Determine and record
                                                                                      the minimum liquid-to-gas
                                                                                      ratio from the recorded,
                                                                                      paired values.
5. Fixed-bed gas-solid adsorption    a. Establish operating  Data from continuous    Measure and record the
 system. Gas-solid.                   limit for temperature.  parameter monitoring    temperature of gas
                                                              system.                 entering or exiting the
                                                                                      adsorption system every 15
                                                                                      minutes. Determine and
                                                                                      record the maximum hourly
                                                                                      average temperature.

[[Page 6959]]

 
                                     b. Establish operating  i. Data from            (1) Measure and record the
                                      limit for HCl           continuous parameter    HCl concentration in the
                                      concentration.          monitoring systems.     exhaust gas from the fixed-
                                                                                      bed adsorption system
                                                                                      using the colormetric tube
                                                                                      sampling system at least
                                                                                      three times during each
                                                                                      test run. Determine and
                                                                                      record the average HCl
                                                                                      concentration for each
                                                                                      test run. Determine and
                                                                                      record the average HCl
                                                                                      concentration for the
                                                                                      overall source test from
                                                                                      the recorded test run
                                                                                      averages.
                                                                                     (2) If you elect to comply
                                                                                      with the HCl outlet
                                                                                      concentration limit
                                                                                      (Option 2), determine and
                                                                                      record the operating limit
                                                                                      for HCl concentration
                                                                                      using Equation 4 of Sec.
                                                                                      63.1567. If you elect to
                                                                                      comply with the HCl
                                                                                      percent reduction standard
                                                                                      (Option 1), determine and
                                                                                      record the operating limit
                                                                                      for HCl concentration
                                                                                      using Equation 5 of Sec.
                                                                                      63.1567.
6. Moving-bed gas-solid adsorption   a. Establish operating  Data from continuous    Measure and record the
 system (e.g., ChlorsorbTM System).   limit for temperature.  parameter monitoring    temperature of gas
                                                              systems.                entering or exiting the
                                                                                      adsorption system every 15
                                                                                      minutes. Determine and
                                                                                      record the maximum hourly
                                                                                      average temperature.
                                     b. Measure the          Determination of Metal  Measure and record the
                                      chloride level on the   Concentration on        chloride concentration of
                                      sorbent entering and    Catalyst Particles      the sorbent material
                                      exiting the             (Instrumental           entering and exiting the
                                      adsorption system.      Analyzer Procedure)     adsorption system at least
                                                              in appendix A to        three times during each
                                                              subpart UUU; or EPA     test run. Determine and
                                                              Method 5050 combined    record the average weight
                                                              either with EPA         percent chloride
                                                              Method 9056, or with    concentration of the
                                                              EPA Method 9253; or     sorbent entering the
                                                              EPA Method 9212 with    adsorption system for each
                                                              the soil extraction     test run. Determine and
                                                              procedures listed       record the average weight
                                                              within the method.\1\   percent chloride
                                                                                      concentration of the
                                                                                      sorbent exiting the
                                                                                      adsorption system for each
                                                                                      test run.
----------------------------------------------------------------------------------------------------------------
\1\ The EPA Methods 5050, 9056, 9212 and 9253 are included in ``Test Methods for Evaluating Solid Waste,
  Physical/Chemical Methods,'' EPA Publication SW-846, Revision 5 (April 1998). The SW-846 and Updates (document
  number 955-001-00000-1) are available for purchase from the Superintendent of Documents, U.S. Government
  Printing Office, Washington, DC 20402, (202) 512-1800; and from the National Technical Information Services
  (NTIS), 5285 Port Royal Road, Springfield, VA 22161, (703) 487-4650. Copies may be inspected at the EPA Docket
  Center (Air Docket), EPA West, Room B-108, 1301 Constitution Ave., NW., Washington, DC; or at the Office of
  the Federal Register, 800 North Capitol Street, NW., Suite 700, Washington, DC. These methods are also
  available at http://www.epa.gov/epaoswer/hazwaste/test/main.htm.


0
29. Table 26 to subpart UUU of part 63 is revised as follows:

 Table 26 to Subpart UUU of Part 63.--Initial Compliance with Inorganic
            HAP Emission Limits for Catalytic Reforming Units
 [As stated in Sec.   63.1567(b)(4), you shall meet each requirement in
                the following table that applies to you.]
------------------------------------------------------------------------
                                                           You have
                                   For the following     demonstrated
            For . . .             emission limit . .  initial compliance
                                           .               if . . .
------------------------------------------------------------------------
1. Each existing semi-            Reduce              Average emissions
 regenerative catalytic            uncontrolled        HCl measured
 reforming unit.                   emissions of HCl    using Method 26
                                   by 92 percent by    or 26A, as
                                   weight or to a      applicable, over
                                   concentration of    the period of the
                                   30 ppmv, (dry       performance test,
                                   basis), corrected   are reduced by 92
                                   to 3 percent        percent or to a
                                   oxygen.             concentration
                                                       less than or
                                                       equal to 30 ppmv
                                                       (dry basis)
                                                       corrected to 3
                                                       percent oxygen.
2. Each existing cyclic or        Reduce              Average emissions
 continuous catalytic reforming    uncontrolled        of HCl measured
 unit and each new semi-           emissions of HCl    using Method 26
 regenerative, cyclic, or          by 97 percent by    or 26A, as
 continuous catalytic reforming    weight or to a      applicable, over
 unit.                             concentration of    the period of the
                                   10 ppmv (dry        performance test,
                                   basis), corrected   are reduced by 97
                                   to 3 percent        percent or to a
                                   oxygen.             concentration
                                                       less than or
                                                       equal to 10 ppmv
                                                       (dry basis)
                                                       corrected to 3
                                                       percent oxygen.
------------------------------------------------------------------------


[[Page 6960]]


0
30. Table 27 to subpart UUU of part 63 is revised as follows:

     Table 27 to Subpart UUU of Part 63.--Continuous Compliance With
       Inorganic HAP Emission Limits for Catalytic Reforming Units
 [As stated in Sec.   63.1567(c)(1), you shall meet each requirement in
                the following table that applies to you.]
------------------------------------------------------------------------
                                                           You shall
                                                          demonstrate
                                                          continuous
                                   For this emission   compliance during
            For . . .                 limit . . .      coke burn-off and
                                                           catalyst
                                                       rejuvenation by .
                                                              . .
------------------------------------------------------------------------
1. Each existing semi-            Reduce              Maintaining a 92
 regenerative catalytic            uncontrolled        percent HCl
 reforming unit.                   emissions of HCl    emission
                                   by 92 percent by    reduction or an
                                   weight or to a      HCl concentration
                                   concentration of    no more than 30
                                   30 ppmv (dry        ppmv (dry basis),
                                   basis), corrected   corrected to 3
                                   to 3 percent        percent oxygen.
                                   oxygen..
2. Each existing cyclic or        Reduce              Maintaining a 97
 continuous catalytic reforming    uncontrolled        percent HCl
 unit.                             emissions of HCl    control
                                   by 97 percent by    efficiency or an
                                   weight or to a      HCl concentration
                                   concentration of    no more than 10
                                   10 ppmv (dry        ppmv (dry basis),
                                   basis), corrected   corrected to 3
                                   to 3 percent        percent oxygen.
                                   oxygen.
3. Each new semi-regenerative,    Reduce              Maintaining a 97
 cyclic, or continuous catalytic   uncontrolled        percent HCl
 reforming unit.                   emissions of HCl    control
                                   by 97 percent by    efficiency or an
                                   weight or to a      HCl concentration
                                   concentration of    no more than 10
                                   10 ppmv (dry        ppmv (dry basis),
                                   basis), corrected   corrected to 3
                                   to 3 percent        percent oxygen.
                                   oxygen.
------------------------------------------------------------------------


0
31. Table 28 to subpart UUU of part 63 is revised as follows:

     Table 28 to Subpart UUU of Part 63.--Continuous Compliance With
  Operating Limits for Inorganic Hap Emissions From Catalytic Reforming
                                  Units
 [As stated in Sec.   63.1567(c)(1), you shall meet each requirement in
                the following table that applies to you.]
------------------------------------------------------------------------
                                                          You shall
                                                         demonstrate
  For each new and existing                              continuous
  catalytic reforming unit     For this operating     compliance during
 using this type of control        limit . . .        coke burn-off and
   device or system . . .                                 catalyst
                                                     rejuvenation by . .
                                                              .
------------------------------------------------------------------------
1. Wet scrubber.............  a. The daily average  Collecting the
                               pH or alkalinity of   hourly and daily
                               the water (or         average pH or
                               scrubbing liquid)     alkalinity
                               exiting the           monitoring data
                               scrubber must not     according to Sec.
                               fall below the        63.1572 \1\; and
                               level established     maintaining the
                               during the            daily average pH or
                               performance test.     alkalinity above
                                                     the operating limit
                                                     established during
                                                     the performance
                                                     test.
                              b. The daily average  Collecting the
                               liquid-to-gas ratio   hourly average gas
                               must not fall below   flow rate \2\ and
                               the level             total water (or
                               established during    scrubbing liquid)
                               the performance       flow rate
                               test.                 monitoring data
                                                     according to Sec.
                                                     63.1572; and
                                                     determining and
                                                     recording the
                                                     hourly average
                                                     liquid-to-gas
                                                     ratio; and
                                                     determining and
                                                     recording the daily
                                                     average liquid-to-
                                                     gas ratio; and
                                                     maintaining the
                                                     daily average
                                                     liquid-to-gas ratio
                                                     above the limit
                                                     established during
                                                     the performance
                                                     test.
2. Internal scrubbing system  The daily average     Measuring and
 or no control device (e.g.,   HCl concentration     recording the HCl
 hot regen system) meeting     in the catalyst       concentration at
 HCl concentration limit.      regenerator exhaust   least 4 times
                               gas must not exceed   during a
                               the limit             regeneration cycle
                               established during    (equally spaced in
                               the performance       time) or every 4
                               test.                 hours, whichever is
                                                     more frequent,
                                                     using a colormetric
                                                     tube sampling
                                                     system; calculating
                                                     the daily average
                                                     HCl concentration
                                                     as an arithmetic
                                                     average of all
                                                     samples collected
                                                     in each 24-hour
                                                     period from the
                                                     start of the coke
                                                     burn-off cycle or
                                                     for the entire
                                                     duration of the
                                                     coke burn-off cycle
                                                     if the coke burn-
                                                     off cycle is less
                                                     than 24 hours; and
                                                     maintaining the
                                                     daily average HCl
                                                     concentration below
                                                     the applicable
                                                     operating limit.
3. Internal scrubbing system  a. The daily average  Collecting the
 meeting percent HCl           pH or alkalinity of   hourly and daily
 reduction standard.           the water (or         average pH or
                               scrubbing liquid)     alkalinity
                               exiting the           monitoring data
                               internal scrubbing    according to Sec.
                               system must not       63.1572 \1\ and
                               fall below the        maintaining the
                               limit established     daily average pH or
                               during the            alkalinity above
                               performance test.     the operating limit
                                                     established during
                                                     the performance
                                                     test.
                              b. The daily average  Collecting the
                               liquid-to-gas ratio   hourly average gas
                               must not fall below   flow rate \2\ and
                               the level             total water (or
                               established during    scrubbing liquid)
                               the performance       flow rate
                               test.                 monitoring data
                                                     according to Sec.
                                                     63.1572; and
                                                     determining and
                                                     recording the
                                                     hourly average
                                                     liquid-to-gas
                                                     ratio; and
                                                     determining and
                                                     recording the daily
                                                     average liquid-to-
                                                     gas ratio; and
                                                     maintaining the
                                                     daily average
                                                     liquid-to-gas ratio
                                                     above the limit
                                                     established during
                                                     the performance
                                                     test.

[[Page 6961]]

 
4. Fixed-bed gas-solid        a. The daily average  Collecting the
 adsorption systems.           temperature of the    hourly and daily
                               gas entering or       average temperature
                               exiting the           monitoring data
                               adsorption system     according to Sec.
                               must not exceed the   63.1572; and
                               limit established     maintaining the
                               during the            daily average
                               performance test.     temperature below
                                                     the operating limit
                                                     established during
                                                     the performance
                                                     test.
                              b. The HCl            Measuring and
                               concentration in      recording the
                               the exhaust gas       concentration of
                               from the fixed-bed    HCl weekly or
                               gas-solid             during each
                               adsorption system     regeneration cycle,
                               must not exceed the   whichever is less
                               limit established     frequent, using a
                               during the            colormetric tube
                               performance test.     sampling system at
                                                     a point within the
                                                     adsorbent bed not
                                                     to exceed 90
                                                     percent of the
                                                     total length of the
                                                     adsorption bed
                                                     during coke-burn-
                                                     off and catalyst
                                                     rejuvenation;
                                                     implementing
                                                     procedures in the
                                                     operating and
                                                     maintenance plan if
                                                     the HCl
                                                     concentration at
                                                     the sampling
                                                     location within the
                                                     adsorption bed
                                                     exceeds the
                                                     operating limit;
                                                     and maintaining the
                                                     HCl concentration
                                                     in the gas from the
                                                     adsorption system
                                                     below the
                                                     applicable
                                                     operating limit.
5. Moving-bed gas-solid       a. The daily average  Collecting the
 adsorption system (e.g.,      temperature of the    hourly and daily
 ChlorsorbTM System.           gas entering or       average temperature
                               exiting the           monitoring data
                               adsorption system     according to Sec.
                               must not exceed the   63.1572; and
                               limit established     maintaining the
                               during the            daily average
                               performance test.     temperature below
                                                     the operating limit
                                                     established during
                                                     the performance
                                                     test.
                              b. The weekly         Collecting samples
                               average chloride      of the sorbent
                               level on the          exiting the
                               sorbent entering      adsorption system
                               the adsorption        three times per
                               system must not       week (on non-
                               exceed the design     consecutive days);
                               or manufacturer's     and analyzing the
                               recommended limit     samples for total
                               (1.35 weight          chloride \3\; and
                               percent for the       determining and
                               ClorsorbTM.           recording the
                                                     weekly average
                                                     chloride
                                                     concentration; and
                                                     maintaining the
                                                     chloride
                                                     concentration below
                                                     the design or
                                                     manufacturer's
                                                     recommended limit
                                                     (1.35 weight
                                                     percent for the
                                                     ChlorsorbTM
                                                     System).
                              c. The weekly         Collecting samples
                               average chloride      of the sorbent
                               level on the          exiting the
                               sorbent exiting the   adsorption system
                               adsorption system     three times per
                               must not exceed the   week (on non-
                               design or             consecutive days);
                               manufacturer's        and analyzing the
                               recommended limit     samples for total
                               (1.8 weight percent   chloride
                               for the ClorsorbTM    concentration; and
                               System).              determining and
                                                     recording the
                                                     weekly average
                                                     chloride
                                                     concentration; and
                                                     maintaining the
                                                     chloride
                                                     concentration below
                                                     the design or
                                                     manufacturer's
                                                     recommended limit
                                                     (1.8 weight percent
                                                     ChlorsorbTM
                                                     System).
------------------------------------------------------------------------
\1\ If applicable, you can use either alternative in Sec.   63.1573(b)
  instead of a continuous parameter monitoring system for pH or
  alkalinity if you used the alternative method in the initial
  performance test.
\2\ If applicable, you can use the alternative in Sec.   63.1573(a)(1)
  instead of a continuous parameter monitoring system for the gas flow
  rate or cumulative volume of gas entering or exiting the system if you
  used the alternative method in the initial performance test.
\3\ The total chloride concentration of the sorbent material must be
  measured by the procedure, ``Determination of Metal Concentration on
  Catalyst Particles (Instrumental Analyzer Procedure)'' in appendix A
  to this subpart; or by using EPA Method 5050, Bomb Preparation Method
  for Solid Waste, combined either with EPA Method 9056, Determination
  of Inorganic Anions by Ion Chromatography, or with EPA Method 9253,
  Chloride (Titrimetric, Silver Nitrate); or by using EPA Method 9212,
  Potentiometric Determination of Chloride in Aqueous Samples with Ion-
  Selective Electrode, and using the soil extraction procedures listed
  within the method. The EPA Methods 5050, 9056, 9212 and 9253 are
  included in ``Test Methods for Evaluating Solid Waste, Physical/
  Chemical Methods,'' EPA Publication SW-846, Revision 5 (April 1998).
  The SW-846 and Updates (document number 955-001-00000-1) are available
  for purchase from the Superintendent of Documents, U.S. Government
  Printing Office, Washington, DC 20402, (202) 512-1800; and from the
  National Technical Information Services (NTIS), 5285 Port Royal Road,
  Springfield, VA 22161, (703) 487-4650. Copies may be inspected at the
  EPA Docket Center (Air Docket), EPA West, Room B-108, 1301
  Constitution Ave., NW., Washington, DC; or at the Office of the
  Federal Register, 800 North Capitol Street, NW., Suite 700,
  Washington, DC. These methods are also available at http://www.epa.gov/epaoswer/hazwaste/test/main.htm.

0
32. Table 31 to subpart UUU of part 63 is amended by revising entry 1 
and 3 as follows:

[[Page 6962]]



 Table 31 to Subpart UUU of Part 63.--Continuous Monitoring Systems for HAP Emissions From Sulfur Recovery Units
                                                    * * * * *
----------------------------------------------------------------------------------------------------------------
                                                                             You shall install and operate this
              For . . .                       For this limit . . .           continuous monitoring system . . .
----------------------------------------------------------------------------------------------------------------
1. Each new or existing Claus sulfur  a. 250 ppmv (dry basis) of SO2 at     Continuous emission monitoring
 recovery unit part of a sulfur        zero percent excess air if you use    system to measure and record the
 recovery plant of 20 long tons per    an oxidation or reduction control     hourly average concentration of SO2
 day or more and subject to the NSPS   system followed by incineration.      (dry basis) at zero percent excess
 for sulfur oxides in 40 CFR                                                 air for each exhaust stack. This
 60.104(a)(2).                                                               system must include an oxygen
                                                                             monitor for correcting the data for
                                                                             excess air.
                                      b. 300 ppmv of reduced sulfur         Continuous emission monitoring
                                       compounds calculated as ppmv SO2      system to measure and record the
                                       (dry basis) at zero percent excess    hourly average concentration of
                                       air if you use a reduction control    reduced sulfur and oxygen (O2)
                                       system without incineration.          emissions. Calculate the reduced
                                                                             sulfur emissions as SO2 (dry basis)
                                                                             at zero percent excess air.
                                                                             Exception: You can use an
                                                                             instrument having an air or SO2
                                                                             dilution and oxidation system to
                                                                             convert the reduced sulfur to SO2
                                                                             for continuously monitoring and
                                                                             recording the concentration (dry
                                                                             basis) at zero percent excess air
                                                                             of the resultant SO2 instead of the
                                                                             reduced sulfur monitor. The monitor
                                                                             must include an oxygen monitor for
                                                                             correcting the data for excess
                                                                             oxygen.
 
                                                  * * * * * * *
3. Option 2: TRS limit. Each new or   300 ppmv of total reduced sulfur      i. Continuous emission monitoring
 existing sulfur recovery unit         (TRS) compounds, expressed as an      system to measure and record the
 (Claus or other type, regardless of   equivalent SO2 concentration (dry     hourly average concentration of TRS
 size) not subject to the NSPS for     basis) at zero percent oxygen.        for each exhaust stack; this
 sulfur oxides in 40 CFR                                                     monitor must include an oxygen
 60.104(a)(2).                                                               monitor for correcting the data for
                                                                             excess oxygen; or
                                                                            ii. Continuous parameter monitoring
                                                                             systems to measure and record the
                                                                             combustion zone temperature of each
                                                                             thermal incinerator and the oxygen
                                                                             content (percent, dry basis) in the
                                                                             vent stream of the incinerator.
----------------------------------------------------------------------------------------------------------------


0
33. Table 33 to subpart UUU of part 63 is revised as follows:

    Table 33 to Subpart UUU of Part 63.--Initial Compliance With HAP
                Emission Limits for Sulfur Recovery Units
 [As stated in Sec.   63.1568(b)(5), you shall meet each requirement in
                the following table that applies to you.]
------------------------------------------------------------------------
                                                          You have
          For . . .             For the following   demonstrated initial
                              emission limit . . .   compliance if . . .
------------------------------------------------------------------------
1. Each new or existing       a. 250 ppmv (dry      You have already
 Claus sulfur recovery unit    basis) SO2 at zero    conducted a
 part of a sulfur recovery     percent excess air    performance test to
 plant of 20 long tons per     if you use an         demonstrate initial
 day or more and subject to    oxidation or          compliance with the
 the NSPS for sulfur oxides    reduction control     NSPS and each 12-
 in 40 CFR 60.104(a)(2).       system followed by    hour rolling
                               incineration.         average
                                                     concentration of
                                                     SO2 emissions
                                                     measured by the
                                                     continuous emission
                                                     monitoring system
                                                     is less than or
                                                     equal to 250 ppmv
                                                     (dry basis) at zero
                                                     percent excess air.
                                                     As part of the
                                                     Notification of
                                                     Compliance Status,
                                                     you must certify
                                                     that your vent
                                                     meets the SO2
                                                     limit. You are not
                                                     required to do
                                                     another performance
                                                     test to demonstrate
                                                     initial compliance.
                                                     You have already
                                                     conducted a
                                                     performance
                                                     evaluation to
                                                     demonstrate initial
                                                     compliance with the
                                                     applicable
                                                     performance
                                                     specification. As
                                                     part of your
                                                     Notification of
                                                     Compliance Status,
                                                     you must certify
                                                     that your
                                                     continuous emission
                                                     monitoring system
                                                     meets the
                                                     applicable
                                                     requirements in
                                                     Sec.   63.1572. You
                                                     are not required to
                                                     do another
                                                     performance
                                                     evaluation to
                                                     demonstrate initial
                                                     compliance.

[[Page 6963]]

 
                              b. 300 ppmv of        You have already
                               reduced sulfur        conducted a
                               compounds             performance test to
                               calculated as ppmv    demonstrate initial
                               SO2 (dry basis) at    compliance with the
                               zero percent excess   NSPS and each 12-
                               air if you use a      hour rolling
                               reduction control     average
                               system without        concentration of
                               incineration.         reduced sulfur
                                                     compounds measured
                                                     by your continuous
                                                     emission monitoring
                                                     system is less than
                                                     or equal to 300
                                                     ppmv, calculated as
                                                     ppmv SO2 (dry
                                                     basis) at zero
                                                     percent excess air.
                                                     As part of the
                                                     Notification of
                                                     Compliance Status,
                                                     you must certify
                                                     that your vent
                                                     meets the SO2
                                                     limit. You are not
                                                     required to do
                                                     another performance
                                                     test to demonstrate
                                                     initial compliance.
                                                     You have already
                                                     conducted a
                                                     performance
                                                     evaluation to
                                                     demonstrate initial
                                                     compliance with the
                                                     applicable
                                                     performance
                                                     specification. As
                                                     part of your
                                                     Notification of
                                                     Compliance Status,
                                                     you must certify
                                                     that your
                                                     continuous emission
                                                     monitoring system
                                                     meets the
                                                     applicable
                                                     requirements in
                                                     Sec.   63.1572. You
                                                     are not required to
                                                     do another
                                                     performance
                                                     evaluation to
                                                     demonstrate initial
                                                     compliance.
2. Option 1: Elect NSPS.      a. 250 ppmv (dry      Each 12-hour rolling
 Each new or existing sulfur   basis) of SO2 at      average
 recovery unit (Claus or       zero percent excess   concentration of
 other type, regardless of     air if you use an     SO2 emissions
 size) not subject to the      oxidation or          measured by the
 NSPS for sulfur oxides in     reduction control     continuous emission
 40 CFR 60.104(a)(2).          system followed by    monitoring system
                               incineration.         during the initial
                                                     performance test is
                                                     less than or equal
                                                     to 250 ppmv (dry
                                                     basis) at zero
                                                     percent excess air;
                                                     and your
                                                     performance
                                                     evaluation shows
                                                     the monitoring
                                                     system meets the
                                                     applicable
                                                     requirements in
                                                     Sec.   63.1572.
                              b. 300 ppmv of        Each 12-hour rolling
                               reduced sulfur        average
                               compounds             concentration of
                               calculated as ppmv    reduced sulfur
                               SO2 (dry basis) at    compounds measured
                               zero percent excess   by the continuous
                               air if you use a      emission monitoring
                               reduction control     system during the
                               system without        initial performance
                               incineration.         test is less than
                                                     or equal to 300
                                                     ppmv, calculated as
                                                     ppmv SO2 (dry
                                                     basis) at zero
                                                     percent excess air;
                                                     and your
                                                     performance
                                                     evaluation shows
                                                     the continuous
                                                     emission monitoring
                                                     system meets the
                                                     applicable
                                                     requirements in
                                                     Sec.   63.1572.
3. Option 2: TRS limit. Each  300 ppmv of TRS       If you use
 new or existing sulfur        compounds expressed   continuous
 recovery unit (Claus or       as an equivalent      parameter
 other type, regardless of     SO2 concentration     monitoring systems,
 size) not subject to the      (dry basis) at zero   the average
 NSPS for sulfur oxides in     percent oxygen.       concentration of
 40 CFR 60.104(a)(2).                                TRS emissions
                                                     measured using
                                                     Method 15 during
                                                     the initial
                                                     performance test is
                                                     less than or equal
                                                     to 300 ppmv
                                                     expressed as
                                                     equivalent SO2
                                                     concentration (dry
                                                     basis) at zero
                                                     percent oxygen. If
                                                     you use a
                                                     continuous emission
                                                     monitoring system,
                                                     each 12-hour
                                                     rolling average
                                                     concentration of
                                                     TRS emissions
                                                     measured by the
                                                     continuous emission
                                                     monitoring system
                                                     during the initial
                                                     performance test is
                                                     less than or equal
                                                     to 300 ppmv
                                                     expressed as an
                                                     equivalent SO2 (dry
                                                     basis) at zero
                                                     percent oxygen; and
                                                     your performance
                                                     evaluation shows
                                                     the continuous
                                                     emission monitoring
                                                     system meets the
                                                     applicable
                                                     requirements in
                                                     Sec.   63.1572.
------------------------------------------------------------------------


0
34. Table 34 to subpart UUU of part 63 is revised as follows:

[[Page 6964]]



   Table 34 to Subpart UUU of Part 63.--Continuous Compliance With HAP
                Emission Limits for Sulfur Recovery Units
 [As stated in Sec.   63.1568(c)(1), you shall meet each requirement in
                the following table that applies to you.]
------------------------------------------------------------------------
                                                          You shall
                                For this emission        demonstrate
          For . . .                limit . . .           continuous
                                                     compliance by . . .
------------------------------------------------------------------------
1. Each new or existing       a. 250 ppmv (dry      Collecting the
 Claus sulfur recovery unit    basis) of SO2 at      hourly average SO2
 part of a sulfur recovery     zero percent excess   monitoring data
 plant of 20 long tons per     air if you use an     (dry basis, percent
 day or more and subject to    oxidation or          excess air)
 the NSPS for sulfur oxides    reduction control     according to Sec.
 in 40 CFR 60.104(a)(2).       system followed by    63.1572;
                               incineration.         determining and
                                                     recording each 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     SO2; maintaining
                                                     each 12-hour
                                                     rolling average
                                                     concentration of
                                                     SO2 at or below the
                                                     applicable emission
                                                     limitation; and
                                                     reporting any 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     SO2 greater than
                                                     the applicable
                                                     emission limitation
                                                     in the compliance
                                                     report required by
                                                     Sec.   63.1575.
                              b. 300 ppmv of        Collecting the
                               reduced sulfur        hourly average
                               compounds             reduced sulfur (and
                               calculated as ppmv    air or O2 dilution
                               SO2 (dry basis) at    and oxidation)
                               zero percent excess   monitoring data
                               air if you use a      according to Sec.
                               reduction control     63.1572;
                               system without        determining and
                               incineration.         recording each 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     reduced sulfur;
                                                     maintaining each 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     reduced sulfur at
                                                     or below the
                                                     applicable emission
                                                     limitation; and
                                                     reporting any 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     reduced sulfur
                                                     greater than the
                                                     applicable emission
                                                     limitation in the
                                                     compliance report
                                                     required by Sec.
                                                     63.1575.
2. Option 1: Elect NSPS.      a. 250 ppmv (dry      Collecting the
 Each new or existing sulfur   basis) of SO2 at      hourly average SO2
 recovery unit (Claus or       zero percent excess   data (dry basis,
 other type, regardless of     air if you use an     percent excess air)
 size) not subject to the      oxidation or          according to Sec.
 NSPS for sulfur oxides in     reduction control     63.1572;
 40 CFR 60.104(a)(2).          system followed by    determining and
                               incineration.         recording each 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     SO2; maintaining
                                                     each 12-hour
                                                     rolling average
                                                     concentration of
                                                     SO2 at or below the
                                                     applicable emission
                                                     limitation; and
                                                     reporting any 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     SO2 greater than
                                                     the applicable
                                                     emission limitation
                                                     in the compliance
                                                     report required by
                                                     Sec.   63.1575.
                              b. 300 ppmv of        Collecting the
                               reduced sulfur        hourly average
                               compounds             reduced sulfur (and
                               calculated as ppmv    air or O2 dilution
                               SO2 (dry basis) at    and oxidation)
                               zero percent excess   monitoring data
                               air if you use a      according to Sec.
                               reduction control     63.1572;
                               system without        determining and
                               incineration.         recording each 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     reduced sulfur;
                                                     maintaining each 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     reduced sulfur at
                                                     or below the
                                                     applicable emission
                                                     limitation; and
                                                     reporting any 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     reduced sulfur
                                                     greater than the
                                                     applicable emission
                                                     limitation in the
                                                     compliance report
                                                     required by Sec.
                                                     63.1575.
3. Option 2: TRS limit. Each  300 ppmv of TRS       i. If you use
 new or existing sulfur        compounds,            continuous
 recovery unit (Claus or       expressed as an SO2   parameter
 other type, regardless of     concentration (dry    monitoring systems,
 size) not subject to the      basis) at zero        collecting the
 NSPS for sulfur oxides in     percent oxygen or     hourly average TRS
 40 CFR 60.104(a)(2).          reduced sulfur        monitoring data
                               compounds             according to Sec.
                               calculated as ppmv    63.1572 and
                               SO2 (dry basis) at    maintaining each 12-
                               zero percent excess   hour average
                               air.                  concentration of
                                                     TRS at or below the
                                                     applicable emission
                                                     limitation; or
                                                    ii. If you use a
                                                     continuous emission
                                                     monitoring system,
                                                     collecting the
                                                     hourly average TRS
                                                     monitoring data
                                                     according to Sec.
                                                     63.1572,
                                                     determining and
                                                     recording each 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     TRS; maintaining
                                                     each 12-hour
                                                     rolling average
                                                     concentration of
                                                     TRS at or below the
                                                     applicable emission
                                                     limitation; and
                                                     reporting any 12-
                                                     hour rolling
                                                     average TRS
                                                     concentration
                                                     greater than the
                                                     applicable emission
                                                     limitation in the
                                                     compliance report
                                                     required by Sec.
                                                     63.1575.
------------------------------------------------------------------------


0
35. Table 36 to subpart UUU is amended to revise entry 1 as follows:

[[Page 6965]]



  Table 36 to Subpart UUU of Part 63.--Work Practice Standards for HAP
                       Emissions From Bypass Lines
------------------------------------------------------------------------
                                           You shall meet one of these
                 Option                     equipment standards . . .
------------------------------------------------------------------------
1. Option 1............................  Install and operate a device
                                          (including a flow indicator,
                                          level recorder, or electronic
                                          valve position monitor) to
                                          demonstrate, either
                                          continuously or at least every
                                          hour, whether flow is present
                                          in the by bypass line. Install
                                          the device at or as near as
                                          practical to the entrance to
                                          any bypass line that could
                                          divert the vent stream away
                                          from the control device to the
                                          atmosphere.
 
                              * * * * * * *
------------------------------------------------------------------------


0
36. Table 38 to subpart UUU is revised as follows:

    Table 38 to Subpart UUU of Part 63.--Initial Compliance With Work
         Practice Standards for HAP Emissions From Bypass Lines
 [As stated in Sec.   63.1569(b)(2), you shall meet each requirement in
                the following table that applies to you.]
------------------------------------------------------------------------
                                  For this work           You have
        Option . . .           practice standard .  demonstrated initial
                                       . .           compliance if . . .
------------------------------------------------------------------------
1. Each new or existing       a. Option 1: Install  The installed
 bypass line associated with   and operate a         equipment operates
 a catalytic cracking unit,    device (including a   properly during
 catalytic reforming unit,     flow indicator,       each run of the
 or sulfur recovery unit.      level recorder, or    performance test
                               electronic valve      and no flow is
                               position monitor)     present in the line
                               to demonstrate,       during the test.
                               either continuously
                               or at least every
                               hour, whether flow
                               is present in
                               bypass line.
                               Install the device
                               at or as near as
                               practical to the
                               entrance to any
                               bypass line that
                               could divert the
                               vent stream away
                               from the control
                               device to the
                               atmosphere.
                              b. Option 2: Install  As part of the
                               a car-seal or lock-   notification of
                               and-key device        compliance status,
                               placed on the         you certify that
                               mechanism by which    you installed the
                               the bypass device     equipment, the
                               flow position is      equipment was
                               controlled (e.g.,     operational by your
                               valve handle,         compliance date,
                               damper level) when    and you identify
                               the bypass device     what equipment was
                               is in the closed      installed.
                               position such that
                               the bypass line
                               valve cannot be
                               opened without
                               breaking the seal
                               or removing the
                               device.
                              c. Option 3: Seal     See item 1.b of this
                               the bypass line by    table.
                               installing a solid
                               blind between
                               piping flanges.
                              d. Option 4: Vent     See item 1.b of this
                               the bypass line to    table.
                               a control device
                               that meets the
                               appropriate
                               requirements in
                               this subpart.
------------------------------------------------------------------------


0
37. Table 39 to subpart UUU is amended by revising entry 1 as follows:

  Table 39 to Subpart UUU of Part 63.--Continuous Compliance With Work
         Practice Standards for HAP Emissions From Bypass Lines
                                * * * * *
------------------------------------------------------------------------
                                              You shall demonstrate
    If you elect this standard . . .      continuous compliance by . . .
------------------------------------------------------------------------
1. Option 1: Flow indicator, level       Monitoring and recording on a
 recorder, or electronic valve position   continuous basis or at least
 monitor.                                 every hour whether flow is
                                          present in the bypass line;
                                          visually inspecting the device
                                          at least once every hour if
                                          the device is not equipped
                                          with a recording system that
                                          provides a continuous record;
                                          and recording whether the
                                          device is operating properly
                                          and whether flow is present in
                                          the bypass line.
 
                              * * * * * * *
------------------------------------------------------------------------


0
38. Table 40 to subpart UUU is amended to revise entry 4, 5, 6, and 8 
as follows:

[[Page 6966]]



   Table 40 to Subpart UUU of Part 63.--Requirements for Installation,
 Operation, and Maintenance of Continuous Opacity Monitoring Systems and
                 Continuous Emission Monitoring Systems
                                * * * * *
------------------------------------------------------------------------
   This type of continuous opacity or     Must meet these requirements .
    emission monitoring system . . .                   . .
------------------------------------------------------------------------
 
                              * * * * * * *
4. SO2 continuous emission monitoring    Performance specification 2 (40
 system for sulfur recovery unit with     CFR part 60, appendix B); span
 oxidation control system or reduction    value of 500 ppm SO2; use
 control system; this monitor must        Methods 6 or 6C and 3A or 3B
 include an O2 monitor for correcting     (40 CFR part 60, appendix A)
 the data for excess air.                 for certifying O2 monitor; and
                                          procedure 1 (40 CFR part 60,
                                          appendix F) except relative
                                          accuracy test audits are
                                          required annually instead of
                                          quarterly.
5. Reduced sulfur and O2 continuous      Performance specification 5 (40
 emission monitoring system for sulfur    CFR part 60, appendix B),
 recovery unit with reduction control     except calibration drift
 system not followed by incineration;     specification is 2.5 percent
 this monitor must include an O2          of the span value instead of 5
 monitor for correcting the data for      percent; 450 ppm reduced
 excess air unless exempted.              sulfur; use Methods 15 or 15A
                                          and 3A or 3B (40 CFR part 60,
                                          appendix A) for certifying
                                          O2monitor; if Method 3A or 3B
                                          yields O2 concentrations below
                                          0.25 percent during the
                                          performance evaluation, the O2
                                          concentration can be assumed
                                          to be zero and the O2 monitor
                                          is not required; and procedure
                                          1 (40 CFR part 60, appendix
                                          F), except relative accuracy
                                          test audits, are required
                                          annually instead of quarterly.
6. Instrument with an air or O2          Performance specification 5 (40
 dilution and oxidation system to         CFR part 60, appendix B); span
 convert reduced sulfur to SO2 for        value of 375 ppm SO2; use
 continuously monitoring the              Methods 15 or 15A and 3A or 3B
 concentration of SO2 instead of          for certifying O2 monitor; and
 reduced sulfur monitor and O2 monitor.   procedure 1 (40 CFR part 60,
                                          appendix F), except relative
                                          accuracy test audits, are
                                          required annually instead of
                                          quarterly.
 
                              * * * * * * *
8. O2 monitor for oxygen concentration.  If necessary due to
                                          interferences, locate the
                                          oxygen sensor prior to the
                                          introduction of any outside
                                          gas stream; performance
                                          specification 3 (40 CFR part
                                          60, appendix B; and procedure
                                          1 (40 CFR part 60, appendix
                                          F), except relative accuracy
                                          test audits, are required
                                          annually instead of quarterly.
------------------------------------------------------------------------


0
39. Table 41 to Subpart UUU is revised as follows:

  Table 41 to Subpart UUU of Part 63.--Requirements for Installation, Operation, and Maintenance of Continuous
                                          Parameter Monitoring Systems
[As stated in Sec.   63.1572(c)(1), you shall meet each requirement in the following table that applies to you.]
----------------------------------------------------------------------------------------------------------------
            If you use . . .                                         You shall . . .
----------------------------------------------------------------------------------------------------------------
1. pH strips...........................  Use pH strips with an accuracy of <plus-minus> 10 percent.
2. Colormetric tube sampling system....  Use a colormetric tube sampling system with a printed numerical scale
                                          in ppmv, a standard measurement range of 1 to 10 ppmv (or 1 to 30 ppmv
                                          if applicable), and a standard deviation for measured values of no
                                          more than <plus-minus> 15 percent. System must include a gas detection
                                          pump and hot air probe if needed for the measurement range.
----------------------------------------------------------------------------------------------------------------


0
40. Table 44 to subpart UUU of part 63 is revised as follows:

         Table 44 to Subpart UUU of Part 63.--Applicability of NESHAP General Provisions to Subpart UUU
   [As stated in Sec.   63.1577, you shall meet each requirement in the following table that applies to you.]
----------------------------------------------------------------------------------------------------------------
              Citation                       Subject         Applies to supbart UUU          Explanation
----------------------------------------------------------------------------------------------------------------
Sec.   63.1........................  Applicability.........  Yes...................  Except that subpart UUU
                                                                                      specifies calendar or
                                                                                      operating day.
Sec.   63.2........................  Definitions...........  Yes...................
Sec.   63.3........................  Units and               Yes...................
                                      Abbreviations.
Sec.   63.4........................  Prohibited Activities.  Yes...................
Sec.   63.5(A)-(C).................  Construction and        Yes...................  In Sec.   63.5(b)(4),
                                      Reconstruction.                                 replace the reference to
                                                                                      Sec.   63.9 with Sec.
                                                                                      63.9(b)(4) and (5).

[[Page 6967]]

 
Sec.   63.5(d)(1)(i)...............  Application for         Yes...................  Except, subpart UUU
                                      Approval of                                     specifies the application
                                      Construction or                                 is submitted as soon as
                                      Reconstruction--Gener                           practicable before startup
                                      al Application                                  but not later than 90 days
                                      Requirements.                                   (rather then 60) after the
                                                                                      promulgation date where
                                                                                      construction or
                                                                                      reconstruction had
                                                                                      commenced and initial
                                                                                      startup had not occurred
                                                                                      before promulgation.
Sec.   63.5(d)(1)(ii)..............  ......................  Yes...................  Except that emission
                                                                                      estimates specified in
                                                                                      Sec.   63.5(d)(1)(ii)(H)
                                                                                      are not required.
Sec.   63.5(d)(1)(iii).............  ......................  No....................  Subpart UUU specifies
                                                                                      submission of notification
                                                                                      of compliance status.
Sec.   63.5(d)(2)..................  ......................  No....................
Sec.   63.5(d)(3)..................  ......................  Yes...................  Except that Sec.
                                                                                      63.5(d)(3)(ii) does not
                                                                                      apply.
Sec.   63.5(d0(4)..................  ......................  Yes...................
Sec.   63.5(e).....................  Approval of             Yes...................
                                      Construction or
                                      Reconstruction.
Sec.   63.5(f)(1)..................  Approval of
                                      Construction or
                                      Reconstruction Based
                                      on State Review.
Sec.   63.5(f)(2)..................  ......................  Yes...................  Except that 60 days is
                                                                                      changed to 90 days and
                                                                                      cross-reference to
                                                                                      53.9(B)(2) does not apply.
Sec.   63.6(a).....................  Compliance with         Yes...................
                                      Standards and
                                      Maintenance--Applicab
                                      ility.
Sec.   63.6(b)(1)-(4)..............  Compliance Dates for    Yes...................
                                      New and Reconstructed
                                      Sources.
Sec.   63.6(b)(5)..................  ......................  Yes...................  Except that subpart UUU
                                                                                      specifies different
                                                                                      compliance dates for
                                                                                      sources.
Sec.   63.6(b)(6)..................  [Reserved]............  Not applicable........
Sec.   63.6(b)(7)..................  Compliance Dates for    Yes...................
                                      New and Reconstructed
                                      Area Sources That
                                      Become Major.
Sec.   63.6(c)(1)-(2)..............  Compliance Dates for    Yes...................  Except that subpart UUU
                                      Existing Sources.                               specifies different
                                                                                      compliance dates for
                                                                                      sources subject to Tier II
                                                                                      gasoline sulfur control
                                                                                      requirements.
Sec.   63.6(c)(3)-(4)..............  [Reserved]............  Not applicable........
Sec.   63.6(c)(5)..................  Compliance Dates for    Yes...................
                                      Existing Area Sources
                                      That Become Major.
Sec.   63.6(d).....................  [Reserved]............  Not applicable........
Sec.   63.6(e)(1)-(2)..............  Operation and           Yes...................
                                      Maintenance
                                      Requirements.
Sec.   63.6(e)(3)(i)-(iii).........  Startup, Shutdown, and  Yes...................
                                      Malfunction Plan.
Sec.   63.6(e)(3)(iv)..............  ......................  Yes...................  Except that reports of
                                                                                      actions not consistent
                                                                                      with plan are not required
                                                                                      within 2 and 7 days of
                                                                                      action but rather must be
                                                                                      included in next periodic
                                                                                      report.
Sec.   63.6(e)(3)(v)-(viii)........  ......................  Yes...................  The owner or operator is
                                                                                      only required to keep the
                                                                                      latest version of the
                                                                                      plan.
Sec.   63.6(f)(1)-(2)(iii)(C)......  Compliance with         Yes...................
                                      Emission Standards.
Sec.   63.6(f)(2)(iii)(D)..........  ......................  No....................
Sec.   63.6(f)(2)(iv)-(v)..........  ......................  Yes...................
Sec.   63.6(f)(3)..................  ......................  Yes...................
Sec.   63.6(g).....................  Alternative Standard..  Yes...................
Sec.   63.6(h).....................  Opacity/VE Standards..  Yes...................
Sec.   63.6(h)(2)(i)...............  Determining Compliance  No....................  Subpart UUU specifies
                                      with Opacity/VE                                 methods.
                                      Standards.
Sec.   63.6(h)(2)(ii)..............  [Reserved]............  Not applicable........
Sec.   63.6(h)(2)(iii).............  ......................  Yes...................
Sec.   63.6(h)(3)..................  [Reserved]............  Not applicable........
Sec.   63.6(h)(4)..................  Notification of         Yes...................  Applies to Method 22 tests.
                                      Opacity/VE
                                      Observation Date.
Sec.   63.6(h)(5)..................  Conducting Opacity/VE   No....................
                                      Observations.

[[Page 6968]]

 
Sec.   63.6(h)(6)..................  Records of Conditions   Yes...................  Applies to Method 22
                                      During Opacity/VE                               observations.
                                      Observations.
Sec.   63.6(h)(7)(i)...............  Report COM Monitoring   Yes...................
                                      Data from Performance
                                      Test.
Sec.   63.6(h)(7)(ii)..............  Using COM Instead of    No....................
                                      Method 9.
Sec.   63.6(h)(7)(iii).............  Averaging Time for COM  Yes...................
                                      during Performance
                                      Test.
Sec.   63.6(h)(7)(iv)..............  COM Requirements......  Yes...................
Sec.   63.6(h)(8)..................  Determining Compliance  Yes...................
                                      with Opacity/VE
                                      Standards.
Sec.   63.6(h)(9)..................  Adjusted Opacity        Yes...................
                                      Standard.
Sec.   63.6(i)(1)-(14).............  Extension of            Yes...................  Extension of compliance
                                      Compliance.                                     under Sec.   63.6(i)(4)
                                                                                      not applicable to a
                                                                                      facility that installs
                                                                                      catalytic cracking feed
                                                                                      hydrotreating and receives
                                                                                      an extended compliance
                                                                                      date under Sec.
                                                                                      63.1563(c).
Sec.   63.6(i)(15).................  [Reserved]............  Not applicable........
Sec.   63.6(i)(16).................  ......................  Yes...................
Sec.   63.6(j).....................  Presidential            Yes...................
                                      Compliance Exemption.
Sec.   63.7(a)(1)..................  Performance Test        Yes...................  Except that subpart UUU
                                      Requirements                                    specifies the applicable
                                      Applicability.                                  test and demonstration
                                                                                      procedures.
Sec.   63.7(a)(2)..................  Performance Test Dates  No....................  Test results must be
                                                                                      submitted in the
                                                                                      Notification of Compliance
                                                                                      Status report due 150 days
                                                                                      after the compliance date.
Sec.   63.7(a)(3)..................  Section 114 Authority.  Yes...................
Sec.   63.7(b).....................  Notifications.........  Yes...................  Except that subpart UUU
                                                                                      specifies notification at
                                                                                      least 30 days prior to the
                                                                                      scheduled test date rather
                                                                                      than 60 days.
Sec.   63.7(c).....................  Quality Assurance       Yes...................
                                      Program/Site-Specific
                                      Test Plan.
Sec.   63.7(d).....................  Performance Test        Yes...................
                                      Facilities.
Sec.   63.7(e).....................  Conduct of Tests......  Yes...................
Sec.   63.7(f).....................  Alternative Test        Yes...................
                                      Method.
Sec.   63.7(g).....................  Data Analysis,          Yes...................  Except performance test
                                      Recordkeeping,                                  reports must be submitted
                                      Reporting.                                      with notification of
                                                                                      compliance status due 150
                                                                                      days after the compliance
                                                                                      date.
Sec.   63.7(h).....................  Waiver of Tests         Yes...................
Sec.   63.8(a)(1)..................  Monitoring              Yes...................
                                      Requirements-
                                      Applicability.
Sec.   63.8(a)(2)..................  Performance             Yes...................
                                      Specifications.
Sec.   63.8(a)(3)..................  [Reserved]............  Not applicable........
Sec.   63.8(a)(4)..................  Monitoring with Flares  Yes...................
Sec.   63.8(b)(1)..................  Conduct of Monitoring.  Yes...................
Sec.   63.8(b)(2)-(3)..............  Multiple Effluents and  Yes...................  Subpart UUU specifies the
                                      Multiple Monitoring                             required monitoring
                                      Systems.                                        locations.
Sec.   63.8(c)(1)..................  Monitoring System       Yes...................
                                      Operation and
                                      Maintenance.
Sec.   63.8(c)(1)(i)-(ii)..........  Startup, Shutdown, and  Yes...................  Except that subpart UUU
                                      Malfunctions.                                   specifies that reports are
                                                                                      not required if actions
                                                                                      are consistent with the
                                                                                      SSM plan, unless requested
                                                                                      by the permitting
                                                                                      authority. If actions are
                                                                                      not consistent, actions
                                                                                      must be described in next
                                                                                      compliance report.
Sec.   63.8(c)(1)(iii).............  Compliance with         Yes...................
                                      Operation and
                                      Maintenance
                                      Requirements.
Sec.   63.8(c)(2)-(3)..............  Monitoring System       Yes...................  Except that subpart UUU
                                      Installation.                                   specifies that for
                                                                                      continuous parameter
                                                                                      monitoring systems,
                                                                                      operational status
                                                                                      verification includes
                                                                                      completion of manufacturer
                                                                                      written specifications or
                                                                                      installation, operation,
                                                                                      and calibration of the
                                                                                      system or other written
                                                                                      procedures that provide
                                                                                      adequate assurance that
                                                                                      the equipment will monitor
                                                                                      accurately.
Sec.   63.8(c)(4)..................  Continuous Monitoring   No....................  Subpart UUU specifies
                                      System Requirements.                            operational requirements.

[[Page 6969]]

 
Sec.   63.8(c)(4)(i)-(ii)..........  Continuous Monitoring   Yes...................  Except that these
                                      System Requirements.                            requirements apply only to
                                                                                      a continuous opacity
                                                                                      monitoring system or a
                                                                                      continuous emission
                                                                                      monitoring system if you
                                                                                      are subject to the NSPS or
                                                                                      elect to comply with the
                                                                                      NSPS opacity, CO, or SO2
                                                                                      limits.
Sec.   63.8(c)(5)..................  COM Minimum Procedures  Yes...................
Sec.   63.8(c)(6)..................  CMS Requirements......  No....................  Except that these
                                                                                      requirements apply only to
                                                                                      a continuous opacity
                                                                                      monitoring system or
                                                                                      continuous emission
                                                                                      monitoring system if you
                                                                                      are subject to the NSPS or
                                                                                      elect to comply with the
                                                                                      NSPS opacity, CO, or SO2
                                                                                      limits.
Sec.   63.8(c)(7)-(8)..............  CMS Requirements......  Yes...................
Sec.   63.8(d).....................  Quality Control         Yes...................  Except that these
                                      Program.                                        requirements apply only to
                                                                                      a continuous opacity
                                                                                      monitoring system or
                                                                                      continuous emission
                                                                                      monitoring system if you
                                                                                      are subject to the NSPS or
                                                                                      elect to comply with the
                                                                                      NSPS opacity, CO, or SO2
                                                                                      limits.
Sec.   63.8(e).....................  CMS Performance         Yes...................  Except that these
                                      Evaluation.                                     requirements apply only to
                                                                                      a continuous opacity
                                                                                      monitoring system or
                                                                                      continuous emission
                                                                                      monitoring system if you
                                                                                      are subject to the NSPS or
                                                                                      elect to comply with the
                                                                                      NSPS opacity, CO, or SO2
                                                                                      limits. Results are to be
                                                                                      submitted as part of the
                                                                                      Notification Compliance
                                                                                      Status due 150 days after
                                                                                      the compliance date.
Sec.   63.8(f)(1)-(5)..............  Alternative Monitoring  Yes...................  Except that subpart UUU
                                      Methods.                                        specifies procedures for
                                                                                      requesting alternative
                                                                                      monitoring systems and
                                                                                      alternative parameters.
Sec.   63.8(f)(6)..................  Alternative to          Yes...................  Applicable to continuous
                                      Relative Accuracy                               emission monitoring
                                      Test.                                           systems if performance
                                                                                      specification requires a
                                                                                      relative accuracy test
                                                                                      audit.
Sec.   63.8(g)(1)-(4)..............  Reduction of            Yes...................  Applies to continuous
                                      Monitoring Data.                                opacity monitoring system
                                                                                      or continuous emission
                                                                                      monitoring system.
Sec.   63.8(g)(5)..................  Data Reduction........  No....................  Subpart UUU specifies
                                                                                      requirements.
Sec.   63.9(a).....................  Notification            Yes...................  Duplicate Notification of
                                      Requirements--Applica                           Compliance Status report
                                      bility.                                         to the Regional
                                                                                      Administrator may be
                                                                                      required.
Sec.   63.9(b)(1)-(2), (4)-(5).....  Initial Notifications.  Yes...................  Except that notification of
                                                                                      construction or
                                                                                      reconstruction is to be
                                                                                      submitted as soon as
                                                                                      practicable before startup
                                                                                      but no later than 30 days
                                                                                      (rather than 60 days)
                                                                                      after the effective date
                                                                                      if construction or
                                                                                      reconstruction had
                                                                                      commenced but startup had
                                                                                      not occurred before the
                                                                                      effective date.
Sec.   63.9(b)(3)..................  [Reserved]............
Sec.   63.9(c).....................  Request for Extension   Yes...................
                                      of Compliance.
Sec.   63.9(d).....................  New Source              Yes...................
                                      Notification for
                                      Special Compliance
                                      Requirements.
Sec.   63.9(e).....................  Notification of         Yes...................  Except that notification is
                                      Performance Test.                               required at least 30 days
                                                                                      before test.
Sec.   63.9(f).....................  Notification of VE/     Yes...................
                                      Opacity Test.
Sec.   63.9(g).....................  Additional              Yes...................  Except that these
                                      Notification                                    requirements apply only to
                                      Requirements for                                a continuous opacity
                                      Sources with                                    monitoring system or
                                      Continuous Monitoring                           continuous emission
                                      Systems.                                        monitoring system if you
                                                                                      are subject to the NSPS or
                                                                                      elect to comply with the
                                                                                      NSPS opacity, CO, or SO2
                                                                                      limits.
Sec.   63.9(h).....................  Notification of         Yes...................  Except that subpart UUU
                                      Compliance Status.                              specifies the notification
                                                                                      is due no later than 150
                                                                                      days after compliance
                                                                                      date.
Sec.   63.9(i).....................  Adjustment of           Yes...................
                                      Deadlines.
Sec.   63.9(j).....................  Change in Previous      Yes...................
                                      Information.
63. 10(a)..........................  Recordkeeping and       Yes...................
                                      Reporting
                                      Applicability.
Sec.   63.10(b)....................  Records...............  Yes...................  Except that Sec.
                                                                                      63.10(b)(2)(xiii) applies
                                                                                      if you use a continuous
                                                                                      emission monitoring system
                                                                                      to meet the NSPS or you
                                                                                      select to meet the NSPS,
                                                                                      CO, or SO2 reduced sulfur
                                                                                      limit and the performance
                                                                                      evaluation requires a
                                                                                      relative accuracy test
                                                                                      audit.

[[Page 6970]]

 
Sec.   63.10(c)(1)-(6), (9)-(15)...  Additional Records for  Yes...................  Except that these
                                      Continuous Monitoring                           requirements apply if you
                                      Systems.                                        use a continuous opacity
                                                                                      monitoring system or a
                                                                                      continuous emission
                                                                                      monitoring system to meet
                                                                                      the NSPS or elect to meet
                                                                                      the NSPS opacity, CO, or
                                                                                      SO2 limits.
Sec.   63.10(c)(7)-(8).............  Records of Excess       No....................  Subpart UUU specifies
                                      Emissions and                                   requirements.
                                      Exceedances.
Sec.   63.10(d)(1).................  General Reporting       Yes...................
                                      Requirements.
Sec.   63.10(d)(2).................  Performance Test        No....................  Subpart UUU requires
                                      Results.                                        performance test results
                                                                                      to be reported as part of
                                                                                      the Notification of
                                                                                      Compliance Status due 150
                                                                                      days after the compliance
                                                                                      date.
Sec.   63.10(d)(3).................  Opacity or VE           Yes...................
                                      Observations.
Sec.   63.10(d)(4).................  Progress Reports......  Yes...................
Sec.   63.10(d)(5)(i)..............  Startup, Shutdown, and  Yes...................  Except that reports are not
                                      Malfunction Reports.                            required if actions are
                                                                                      consistent with the SSM
                                                                                      plan, unless requested by
                                                                                      permitting authority.
Sec.   63.10(d)(5)(ii).............  ......................  Yes...................  Except that actions taken
                                                                                      during a startup,
                                                                                      shutdown, or malfunction
                                                                                      that are not consistent
                                                                                      with the plan do not need
                                                                                      to be reported within 2
                                                                                      and 7 days of commencing
                                                                                      and completing the action,
                                                                                      respectively, but must be
                                                                                      included in the next
                                                                                      periodic report.
Sec.   63.10(e)(1)-(2).............  Additional CMS Reports  Yes...................  Except that these
                                                                                      requirements apply only to
                                                                                      a continuous opacity
                                                                                      monitoring system or
                                                                                      continuous emission
                                                                                      monitoring system if you
                                                                                      are subject to the NSPS or
                                                                                      elect to comply with the
                                                                                      NSPS opacity, CO, or SO2
                                                                                      limits. Reports of
                                                                                      performance evaluations
                                                                                      must be submitted in
                                                                                      Notification of Compliance
                                                                                      Status.
Sec.   63.10(e)(3).................  Excess Emissions/CMS    No....................  Subpart UUU specifies the
                                      Performance Reports.                            applicable requirements.
Sec.   63.10(e)(4).................  COMS Data Reports.....  Yes...................
Sec.   63.10(f)....................  Recordkeeping/          Yes...................
                                      Reporting Waiver.
Sec.   63.11.......................  Control Device          Yes...................  Applicable to flares.
                                      Requirements.
Sec.   63.13.......................  Addresses.............  Yes...................
Sec.   63.14.......................  Incorporation by        Yes...................
                                      Reference.
Sec.   63.15.......................  Available of            Yes...................
                                      Information.
----------------------------------------------------------------------------------------------------------------


0
41. Subpart UUU of part 63 is amended by adding appendix A to read as 
follows:

Appendix A To Subpart UUU of Part 63--Determination of Metal 
Concentration on Catalyst Particles (Instrumental Analyzer Procedure)

1.0 Scope and Application.

    1.1 Analytes. The analytes for which this method is applicable 
include any elements with an atomic number between 11 (sodium) and 
92 (uranium), inclusive. Specific analytes for which this method was 
developed include:

------------------------------------------------------------------------
                                                     Minimum detectable
              Analyte                   CAS No.             limit
------------------------------------------------------------------------
Nickel compounds..................       7440-02-0  <2 % of span.
Total chlorides...................      16887-00-6  <2 % of span.
------------------------------------------------------------------------

    1.2 Applicability. This method is applicable to the 
determination of analyte concentrations on catalyst particles. This 
method is applicable for catalyst particles obtained from the fluid 
catalytic cracking unit (FCCU) regenerator (i.e., equilibrium 
catalyst), from air pollution control systems operated for the FCCU 
catalyst regenerator vent (FCCU fines), from catalytic reforming 
units (CRU), and other processes as specified within an applicable 
regulation. This method is applicable only when specified within the 
regulation.
    1.3 Data Quality Objectives. Adherence to the requirements of 
this method will enhance the quality of the data obtained from the 
analytical method.

2.0 Summary of Method.

    2.1 A representative sample of catalyst particles is collected, 
prepared, and analyzed for analyte concentration using either energy 
or wavelength dispersive X-ray flourescent (XRF) spectrometry 
instrumental analyzers. In both types of XRF spectrometers, the 
instrument irradiates the sample with high energy (primary) x-rays 
and the elements in

[[Page 6971]]

the sample absorb the x-rays and then re-emit secondary 
(fluorescent) x-rays of characteristic wavelengths for each element 
present. In energy dispersive XRF spectrometers, all secondary x-
rays (of all wavelengths) enter the detector at once. The detector 
registers an electric current having a height proportional to the 
photon energy, and these pulses are then separated electronically, 
using a pulse analyzer. In wavelength dispersive XRF spectrometers, 
the secondary x-rays are dispersed spatially by crystal diffraction 
on the basis of wavelength. The crystal and detector are made to 
synchronously rotate and the detector then receives only one 
wavelength at a time. The intensity of the x-rays emitted by each 
element is proportional to its concentration, after correcting for 
matrix effects. For nickel compounds and total chlorides, the XRF 
instrument response is expected to be linear to analyte 
concentration. Performance specifications and test procedures are 
provided to ensure reliable data.

3.0 Definitions.

    3.1 Measurement System. The total equipment required for the 
determination of analyte concentration. The measurement system 
consists of the following major subsystems:
    3.1.1 Sample Preparation. That portion of a system used for one 
or more of the following: sample acquisition, sample transport, 
sample conditioning, or sample preparation prior to introducing the 
sample into the analyzer.
    3.1.2 Analyzer. That portion of the system that senses the 
analyte to be measured and generates an output proportional to its 
concentration.
    3.1.3 Data Recorder. A digital recorder or personal computer 
used for recording measurement data from the analyzer output.
    3.2 Span. The upper limit of the gas concentration measurement 
range displayed on the data recorder.
    3.3 Calibration Standards. Prepared catalyst samples or other 
samples of known analyte concentrations used to calibrate the 
analyzer and to assess calibration drift.
    3.4 Energy Calibration Standard. Calibration standard, generally 
provided by the XRF instrument manufacturer, used for assuring 
accuracy of the energy scale.
    3.5 Accuracy Assessment Standard. Prepared catalyst sample or 
other sample of known analyte concentrations used to assess analyzer 
accuracy error.
    3.6 Zero Drift. The difference in the measurement system output 
reading from the initial value for zero concentration level 
calibration standard after a stated period of operation during which 
no unscheduled maintenance, repair, or adjustment took place.
    3.7 Calibration Drift. The difference in the measurement system 
output reading from the initial value for the mid-range calibration 
standard after a stated period of operation during which no 
unscheduled maintenance, repair, or adjustment took place.
    3.8 Spectral Interferences. Analytical interferences and 
excessive biases caused by elemental peak overlap, escape peak, and 
sum peak interferences between elements in the samples.
    3.9 Calibration Curve. A graph or other systematic method of 
establishing the relationship between the analyzer response and the 
actual analyte concentration introduced to the analyzer.
    3.10 Analyzer Accuracy Error. The difference in the measurement 
system output reading and the ideal value for the accuracy 
assessment standard.

4.0 Interferences.

    4.1 Spectral interferences with analyte line intensity 
determination are accounted for within the method program. No action 
is required by the XRF operator once these interferences have been 
addressed within the method.
    4.2 The X-ray production efficiency is affected by particle size 
for the very lightest elements. However, particulate matter (PM) 2.5 
particle size effects are substantially < 1 percent for most 
elements. The calibration standards should be prepared with material 
of similar particle size or be processed (ground) to produce 
material of similar particle size as the catalyst samples to be 
analyzed. No additional correction for particle size is performed. 
Alternatively, the sample can be fused in order to eliminate any 
potential particle size effects.

5.0 Safety.

    5.1 Disclaimer. This method may involve hazardous materials, 
operations, and equipment. This test method may not address all of 
the safety problems associated with its use. It is the 
responsibility of the user of this test method to establish 
appropriate safety and health practices and determine the 
applicability of regulatory limitations prior to performing this 
test method.
    5.2 X-ray Exposure. The XRF uses X-rays; XRF operators should 
follow instrument manufacturer's guidelines to protect from 
accidental exposure to X-rays when the instrument is in operation.
    5.3 Beryllium Window. In most XRF units, a beryllium (Be) window 
is present to separate the sample chamber from the X-ray tube and 
detector. The window is very fragile and brittle. Do not allow 
sample or debris to fall onto the window, and avoid using compressed 
air to clean the window because it will cause the window to rupture. 
If the window should rupture, note that Be metal is poisonous. Use 
extreme caution when collecting pieces of Be and consult the 
instrument manufacturer for advice on cleanup of the broken window 
and replacement.

6.0 Equipment and Supplies.

    6.1 Measurement System. Use any measurement system that meets 
the specifications of this method listed in section 13. The typical 
components of the measurement system are described below.
    6.1.1 Sample Mixer/Mill. Stainless steel, or equivalent to 
grind/mix catalyst and binders, if used, to produce uniform particle 
samples.
    6.1.2 Sample Press/Fluxer. Stainless steel, or equivalent to 
produce pellets of sufficient size to fill analyzer sample window, 
or alternatively, a fusion device capable of preparing a fused disk 
of sufficient size to fill analyzer sample window.
    6.1.3 Analytical Balance. <plus-minus>0.0001 gram accuracy for 
weighing prepared samples (pellets).
    6.1.4 Analyzer. An XRF spectrometer to determine the analyte 
concentration in the prepared sample. The analyzer must meet the 
applicable performance specifications in section 13.
    6.1.5 Data Recorder. A digital recorder or personal computer for 
recording measurement data. The data recorder resolution (i.e., 
readability) must be 0.5 percent of span. Alternatively, a digital 
or analog meter having a resolution of 0.5 percent of span may be 
used to obtain the analyzer responses and the readings may be 
recorded manually.

7.0 Reagents and Standards.

    7.1 Calibration Standards. The calibration standards for the 
analyzer must be prepared catalyst samples or other material of 
similar particle size and matrix as the catalyst samples to be 
tested that have known concentrations of the analytes of interest. 
Preparation (grinding/milling/fusion) of the calibration standards 
should follow the same processes used to prepare the catalyst 
samples to be tested. The calibration standards values must be 
established as the average of a minimum of three analyses using an 
approved EPA or ASTM method with instrument analyzer calibrations 
traceable to the U.S. National Institute of Standards and Technology 
(NIST), if available. The maximum percent deviation of the 
triplicate calibration standard analyses should agree within 10 
percent of the average value for the triplicate analysis (see Figure 
1). If the calibration analyses do not meet this criteria, the 
calibration standards must be re-analyzed. If unacceptable 
variability persists, new calibration standards must be prepared. 
Approved methods for the calibration standard analyses include, but 
are not limited to, EPA Methods 6010B, 6020, 7520, or 7521 of SW-
846.\1\ Use a minimum of four calibration standards as specified 
below (see Figure 1):
    7.1.1 High-Range Calibration Standard. Concentration equivalent 
to 80 to 100 percent of the span. The concentration of the high-
range calibration standard should exceed the maximum concentration 
anticipated in the catalyst samples.
    7.1.2 Mid-Range Calibration Standard. Concentration equivalent 
to 40 to 60 percent of the span.
    7.1.3 Low-Range Calibration Standard. Concentration equivalent 
to 1 to 20 percent of the span. The concentration of the low-range 
calibration standard should be selected so that it is less than 
either one-forth of the applicable concentration limit or of the 
lowest concentration anticipated in the catalyst samples.
    7.1.4 Zero Calibration Standard. Concentration of less than 0.25 
percent of the span.
    7.2 Accuracy Assessment Standard. Prepare an accuracy assessment 
standard and determine the ideal value for the accuracy assessment 
standard following the same procedures used to prepare and analyze 
the

[[Page 6972]]

calibration standards as described in section 7.1. The maximum 
percent deviation of the triplicate accuracy assessment standard 
analyses should agree within 10 percent of the average value for the 
triplicate analysis (see Figure 1). The concentration equivalent of 
the accuracy assessment standard must be between 20 and 80 percent 
of the span.
    7.3 Energy Calibration Standard. Generally, the energy 
calibration standard will be provided by the XRF instrument 
manufacturer for energy dispersive spectrometers. Energy calibration 
is performed using the manufacturer's recommended calibration 
standard and involves measurement of a specific energy line (based 
on the metal in the energy calibration standard). This is generally 
an automated procedure used to assure the accuracy of the energy 
scale. This calibration standard may not be applicable to all models 
of XRF spectrometers (particularly wavelength dispersive XRF 
spectrometers).

8.0 Sample Collection, Preservation, Transport, and Storage. 
[Reserved]

9.0 Quality Control.

    9.1 Energy Calibration. For energy dispersive spectrometers, 
conduct the energy calibration by analyzing the energy calibration 
standard provided by the manufacturer. The energy calibration 
involves measurement of a specific energy line (based on the metal 
in the energy calibration standard) and then determination of the 
difference between the measured peak energy value and the ideal 
value. This analysis, if applicable, should be performed daily prior 
to any sample analyses to check the instrument's energy scale. This 
is generally an automated procedure and assures the accuracy of the 
energy scale. If the energy scale calibration process is not 
automated, follow the manufacturer's procedures to manually adjust 
the instrument, as necessary.
    9.2 Zero Drift Test. Conduct the zero drift test by analyzing 
the analyte concentration output by the measurement system with the 
initial calibration value for the zero calibration standard (see 
Figure 2). This analysis should be performed with each set of 
samples analyzed.
    9.3 Calibration Drift Test. Conduct the calibration drift test 
by analyzing the analyte concentration output by the measurement 
system with the initial calibration value for the mid-range 
calibration standard (see Figure 2). This analysis should be 
performed with each set of samples analyzed.
    9.4 Analyzer Accuracy Test. Conduct the analyzer accuracy test 
by analyzing the accuracy assessment standard and comparing the 
value output by the measurement system with the ideal value for the 
accuracy assessment standard (see Figure 2). This analysis should be 
performed with each set of samples analyzed.

10.0 Calibration and Standardization.

    10.1 Perform the initial calibration and set-up following the 
instrument manufacturer's instructions. These procedures should 
include, at a minimum, the major steps listed in sections 10.2 and 
10.3. Subsequent calibrations are to be performed when either a 
quality assurance/quality control (QA/QC) limit listed in section 13 
is exceeded or when there is a change in the excitation conditions, 
such as a change in the tube, detector, X-ray filters, or signal 
processor. Calibrations are typically valid for 6 months to 1 year.
    10.2 Instrument Calibration. Calibration is performed initially 
with calibration standards of similar matrix and binders, if used, 
as the samples to be analyzed (see Figure 1).
    10.3 Reference Peak Spectra. Acquisition of reference spectra is 
required only during the initial calibration. As long as no 
processing methods have changed, these peak shape references remain 
valid. This procedure consists of placing the standards in the 
instrument and acquiring individual elemental spectra that are 
stored in the method file with each of the analytical conditions. 
These reference spectra are used in the standard deconvolution of 
the unknown spectra.

11.0 Analytical Procedure.

    11.1 Sample Preparation. Prepare catalyst samples using the same 
procedure used to prepare the calibration standards. Measure and 
record the weight of sample used. Measure and record the amount of 
binder, if any, used. Pellets or films must be of sufficient size to 
cover the analyzer sample window.
    11.2 Sample Analyses. Place the prepared catalyst samples into 
the analyzer. Follow the manufacturer's instructions for analyzing 
the samples.
    11.3 Record and Store Data. Use a digital recorder or personal 
computer to record and store results for each sample. Record any 
mechanical or software problems encountered during the analysis.

12.0 Data Analysis and Calculations.

    Carry out the following calculations, retaining at least one 
extra significant figure beyond that of the acquired data. Round off 
figures after final calculation.
    12.1 Drift. Calculate the zero and calibration drift for the 
tests described in sections 9.2 and 9.3 (see also Figure 2) as 
follows:

[GRAPHIC] [TIFF OMITTED] TR09FE05.010

Where:
CurrentAnalyzerCal.Response = Instrument response for current QC 
sample analyses;
InitialCal.Response = Initial instrument response for calibration 
standard;
QC Value = QC metric (zero drift or calibration drift), percent of 
span;
Span = Span of the monitoring system.

    12.2 Analyzer Accuracy. Calculate the analyzer accuracy error 
for the tests described in section 9.4 (see also Figure 2) as 
follows:
[GRAPHIC] [TIFF OMITTED] TR09FE05.011


Where:
    Accuracy Value = Percent difference of instrument response to 
the ideal response for the accuracy assessment standard;
CurrentAnalyzerCal.Response = Instrument response for current QC 
sample analyses;
IdealCal.Response = Ideal instrument response for the accuracy 
assessment standard.

13.0 Method Performance.

    13.1 Analytical Range. The analytical range is determined by the 
instrument design. For this method, a portion of the analytical 
range is selected by choosing the span of the monitoring system. The 
span of the monitoring system must be selected such that it 
encompasses the range of concentrations anticipated to occur in the 
catalyst sample. If applicable, the span must be selected such that 
the analyte concentration equivalent to the emission standard is not 
less than 30 percent of the span. If the measured analyte 
concentration exceeds the concentration of the high-range 
calibration standard, the sample analysis is considered invalid. 
Additionally, if the measured analyte concentration is less than the 
concentration of the low-range calibration standard but above the 
detectable limit, the sample analysis results must be flagged with a 
footnote stating, in effect, that the analyte was detected but that 
the reported concentration is below the lower quantitation limit.
    13.2 Minimum Detectable Limit. The minimum detectable limit 
depends on the signal-to-noise ratio of the measurement system. For 
a well-designed system, the minimum detectable limit should be less 
than 2 percent of the span.

[[Page 6973]]

    13.3 Zero Drift. Less than <plus-minus>2 percent of the span.
    13.4 Calibration Drift. Less than <plus-minus>5 percent of the 
span.
    13.5 Analyzer Accuracy Error. Less than <plus-minus>10 percent.

14.0 Pollution Prevention. [Reserved]

15.0 Waste Management. [Reserved]

16.0 Alternative Procedures. [Reserved]

17.0 References.

    1. U.S. Environmental Protection Agency. 1998. Test Methods for 
Evaluating Solid Waste, Physical/Chemical Methods. EPA Publication 
No. SW-846, Revision 5 (April 1998). Office of Solid Waste, 
Washington, DC.

18.0 Tables, Diagrams, Flowcharts, and Validation Data.

--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                          Date:
---------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                  Analytic Method Used:
---------------------------------------------------------------------------------------------------------------------------------------------------------
                                            Zero \a\              Low-Range \b\          Mid-Range \c\          High-Range \d\        Accuracy Std \e\
--------------------------------------------------------------------------------------------------------------------------------------------------------
Sample Run:........................
    1..............................
    2..............................
    3..............................
Average............................
Maximum Percent Deviation .........
--------------------------------------------------------------------------------------------------------------------------------------------------------
\a\ Average must be less than 0.25 percent of span.
\b\ Average must be 1 to 20 percent of span.
\c\ Average must be 40 to 60 percent of span.
\d\ Average must be 80 to 100 percent of span.
\e\ Average must be 20 to 80 percent of span.

Figure 1. Data Recording Sheet for Analysis of Calibration Samples.

    Source Identification:
    Run Number:
    Test Personnel:
    Span:
    Date:

----------------------------------------------------------------------------------------------------------------
                                                                                      Current
                                                                      Initial        analyzer     Drift (percent
                                                                    calibration     calibration      of span)
                                                                     response        response
----------------------------------------------------------------------------------------------------------------
Zero Standard...................................................
Mid-range Standard..............................................


----------------------------------------------------------------------------------------------------------------
                                                                                      Current
                                                                       Ideal         analyzer     Accuracy error
                                                                    calibration     calibration     (percent of
                                                                     response        response         ideal)
----------------------------------------------------------------------------------------------------------------
Accuracy Standard...............................................
----------------------------------------------------------------------------------------------------------------

Figure 2. Data Recording Sheet for System Calibration Drift Data.

[FR Doc. 05-2308 Filed 2-8-05; 8:45 am]
BILLING CODE 6560-50-P


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