[Federal Register Volume 83, Number 161 (Monday, August 20, 2018)]
[Proposed Rules]
[Pages 42066-42089]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2018-17933]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 63

[EPA-HQ-OAR-2013-0290; FRL-9982-43-OAR]
RIN 2060-AT25


National Emission Standards for Hazardous Air Pollutants for Clay 
Ceramics Manufacturing

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: This action proposes amendments to the National Emission 
Standards for Hazardous Air Pollutants (NESHAP) for Clay Ceramics 
Manufacturing. The proposed amendments are in response to a petition 
for reconsideration filed by industry stakeholders on the final rule 
promulgated on October 26, 2015, as well as our review of the 2015 rule 
with respect to other issues raised by stakeholders. This action 
proposes to revise the temperature monitoring methodology used to 
demonstrate continuous compliance with the dioxin/furan (D/F) emissions 
limit of the final rule. In addition, we are proposing to address 
concerns raised by industry stakeholders regarding visible emissions 
(VE) monitoring of tunnel kiln stacks for continuous compliance with 
particulate matter (PM) and mercury (Hg) emission limitations. This 
action also proposes to amend the requirements for weekly visual 
inspections of system ductwork and control device equipment for water 
curtain spray booths. Lastly, this action proposes to amend the NESHAP 
to include provisions for emissions averaging and make technical 
corrections.

DATES: 
    Comments. Comments must be received on or before October 4, 2018.
    Public hearing. If anyone contacts us requesting a public hearing 
on or before August 27, 2018, we will hold a hearing. Additional 
information about the hearing, if requested, will be published in a 
subsequent Federal Register document and posted at https://www.epa.gov/stationary-sources-air-pollution/brick-and-structural-clay-products-national-emission-standards. See SUPPLEMENTARY INFORMATION for 
information on registering and attending a public hearing.

ADDRESSES: 
    Comments. Submit your comments, identified by Docket ID No. EPA-HQ-
OAR-2013-0290, at https://www.regulations.gov. Follow the online 
instructions for submitting comments. Once submitted, comments cannot 
be edited or removed from Regulations.gov. See SUPPLEMENTARY 
INFORMATION for detail about how the EPA treats submitted comments. 
Regulations.gov is our preferred method of receiving comments. However, 
the following other submission methods are also accepted:
    <bullet> Email: <a href="/cdn-cgi/l/email-protection#27460a4649430a550a4348444c42536742574609404851"><span class="__cf_email__" data-cfemail="c7a6eaa6a9a3eab5eaa3a8a4aca2b387a2b7a6e9a0a8b1">[email protected]</span></a>. Include Docket ID No. EPA-
HQ-OAR-2013-0290 in the subject line of the message.
    <bullet> Fax: (202) 566-9744. Attention Docket ID No. EPA-HQ-OAR-
2013-0290.
    <bullet> Mail: To ship or send mail via the United States Postal 
Service, use the following address: U.S. Environmental Protection 
Agency, EPA Docket Center, Docket ID No. EPA-HQ-OAR-2013-0290, Mail 
Code 28221T, 1200 Pennsylvania Avenue NW, Washington, DC 20460.
    <bullet> Hand/Courier Delivery: Use the following Docket Center 
address if you are using express mail, commercial delivery, hand 
delivery, or courier: EPA Docket Center, EPA WJC West Building, Room 
3334, 1301 Constitution Avenue NW, Washington, DC 20004. Delivery 
verification signatures will be available only during regular business 
hours.

FOR FURTHER INFORMATION CONTACT: For questions about this proposed 
action, contact Mr. Brian Storey, Sector Policies and Programs Division 
(D243-03), Office of Air Quality Planning and Standards, U.S. 
Environmental Protection Agency, Research Triangle Park, North Carolina 
27711; telephone number: (919) 541-1103; fax number: (919) 541-4991; 
and email address: <a href="/cdn-cgi/l/email-protection#8af9fee5f8eff3a4e8f8e3ebe4caeffaeba4ede5fc"><span class="__cf_email__" data-cfemail="0172756e7364782f637368606f416471602f666e77">[email protected]</span></a>.

SUPPLEMENTARY INFORMATION: 
    Public hearing. Please contact Ms. Aimee St. Clair at (919) 541-
1063 or by

[[Page 42067]]

email at <a href="/cdn-cgi/l/email-protection#1467607778757d663a757d797171547164753a737b62"><span class="__cf_email__" data-cfemail="acdfd8cfc0cdc5de82cdc5c1c9c9ecc9dccd82cbc3da">[email protected]</span></a> to request a public hearing, to register 
to speak at the public hearing, or to inquire as to whether a public 
hearing will be held.
    Docket. The EPA has established a docket for this rulemaking under 
Docket ID No. EPA-HQ-OAR-2013-0290. All documents in the docket are 
listed in Regulations.gov. Although listed, some information is not 
publicly available, e.g., confidential business information (CBI) or 
other information whose disclosure is restricted by statute. Certain 
other material, such as copyrighted material, is not placed on the 
internet and will be publicly available only in hard copy. Publicly 
available docket materials are available either electronically in 
Regulations.gov or in hard copy at the EPA Docket Center, Room 3334, 
EPA WJC West Building, 1301 Constitution Avenue 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 EPA 
Docket Center is (202) 566-1742.
    Instructions. Direct your comments to Docket ID No. EPA-HQ-OAR-
2013-0290. 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 https://www.regulations.gov, including any personal 
information provided, unless the comment includes information claimed 
to be CBI or other information whose disclosure is restricted by 
statute. Do not submit information that you consider to be CBI or 
otherwise protected through https://www.regulations.gov or email. This 
type of information should be submitted by mail as discussed below.
    The EPA may publish any comment received to its public docket. 
Multimedia submissions (audio, video, etc.) must be accompanied by a 
written comment. The written comment is considered the official comment 
and should include discussion of all points you wish to make. The EPA 
will generally not consider comments or comment contents located 
outside of the primary submission (i.e., on the Web, cloud, or other 
file sharing system). For additional submission methods, the full EPA 
public comment policy, information about CBI or multimedia submissions, 
and general guidance on making effective comments, please visit https://www2.epa.gov/dockets/commenting-epa-dockets.
    The https://www.regulations.gov website allows you to submit your 
comment anonymously, which means the EPA will not know your identity or 
contact information unless you provide it in the body of your comment. 
If you send an email comment directly to the EPA without going through 
https://www.regulations.gov, your email 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, the EPA recommends that you include your name and 
other contact information in the body of your comment and with any 
digital storage media you submit. If the EPA cannot read your comment 
due to technical difficulties and cannot contact you for clarification, 
the EPA may not be able to consider your comment. Electronic files 
should not include special characters or any form of encryption and be 
free of any defects or viruses. For additional information about the 
EPA's public docket, visit the EPA Docket Center homepage at https://www.epa.gov/dockets.
    Submitting CBI. Do not submit information containing CBI to the EPA 
through https://www.regulations.gov or email. Clearly mark the part or 
all of the information that you claim to be CBI. For CBI information on 
any digital storage media that you mail to the EPA, mark the outside of 
the digital storage media as CBI and then identify electronically 
within the digital storage media the specific information that is 
claimed as CBI. In addition to one complete version of the comments 
that includes information claimed as CBI, you must submit a copy of the 
comments that does not contain the information claimed as CBI directly 
to the public docket through the procedures outlined in Instructions 
above. If you submit any digital storage media that does not contain 
CBI, mark the outside of the digital storage media clearly that it does 
not contain CBI. Information not marked as CBI will be included in the 
public docket and the EPA's electronic public docket without prior 
notice. Information marked as CBI will not be disclosed except in 
accordance with procedures set forth in 40 Code of Federal Regulations 
(CFR) part 2. Send or deliver information identified as CBI only to the 
following address: OAQPS Document Control Officer (C404-02), OAQPS, 
U.S. Environmental Protection Agency, Research Triangle Park, North 
Carolina 27711, Attention Docket ID No. EPA-HQ-OAR-2013-0290.
    Preamble Acronyms and Abbreviations. We use multiple acronyms and 
terms in this preamble. While this list may not be exhaustive, to ease 
the reading of this preamble and for reference purposes, the EPA 
defines the following terms and acronyms here:

BSCP Brick and Structural Clay Products
CAA Clean Air Act
CBI Confidential Business Information
CFR Code of Federal Regulations
D/F dioxins/furans
EPA U.S. Environmental Protection Agency
HAP hazardous air pollutant(s)
Hg mercury
HON Hazardous Organic NESHAP
lb pounds
NAICS North American Industry Classification System
NESHAP national emission standards for hazardous air pollutants
NTTAA National Technology Transfer and Advancement Act
OAQPS Office of Air Quality Planning and Standards
OMB Office of Management and Budget
PM particulate matter
PRA Paperwork Reduction Act
RFA Regulatory Flexibility Act
UMRA Unfunded Mandates Reform Act
VE visible emissions

    Organization of this document. The information in this preamble is 
organized as follows:

I. General Information
    A. Does this action apply to me?
    B. Where can I get a copy of this document and other related 
information?
II. Background
    A. What is the statutory authority for this action?
    B. What actions preceded these proposed amendments?
III. Summary of the Proposed Amendments
IV. Rationale for the Proposed Amendments
    A. Temperature Monitoring of Tunnel Kilns
    B. Visible Emissions Monitoring of Tunnel Kiln Exhaust
    C. Weekly Visual Inspections of Water Curtain Spray Booths
    D. Cooling Stacks
    E. Emissions Averaging
    F. Technical Corrections
V. Summary of Cost, Environmental, and Economic Impacts
VI. Statutory and Executive Order Reviews
    A. Executive Order 12866: Regulatory Planning and Review and 
Executive Order 13563: Improving Regulation and Regulatory Review
    B. Executive Order 13771: Reducing Regulations and Controlling 
Regulatory Costs
    C. Paperwork Reduction Act (PRA)
    D. Regulatory Flexibility Act (RFA)
    E. Unfunded Mandates Reform Act (UMRA)
    F. Executive Order 13132: Federalism
    G. Executive Order 13175: Consultation and Coordination With 
Indian Tribal Governments
    H. Executive Order 13045: Protection of Children From 
Environmental Health Risks and Safety Risks
    I. Executive Order 13211: Actions Concerning Regulations That 
Significantly Affect Energy Supply, Distribution, or Use

[[Page 42068]]

    J. National Technology Transfer and Advancement Act (NTTAA)
    K. Executive Order 12898: Federal Actions To Address 
Environmental Justice in Minority Populations and Low-Income 
Populations

I. General Information

A. Does this action apply to me?

    Table 1 of this preamble lists the NESHAP and associated regulated 
industrial source categories that are the subject of this proposal. 
Table 1 is not intended to be exhaustive, but rather provides a guide 
for readers regarding the entities that this proposed action is likely 
to affect. The proposed amendments, once promulgated, will be directly 
applicable to the affected sources. Federal, state, local, and tribal 
government entities would not be affected by this proposed action. As 
defined in the Initial List of Categories of Sources Under Section 
112(c)(1) of the Clean Air Act Amendments of 1990 (see 57 FR 31576, 
July 16, 1992) and Documentation for Developing the Initial Source 
Category List (see EPA-450/3-91-030), the Clay Products Manufacturing 
source category, as originally listed, included any facility engaged in 
manufacturing of clay products such as brick, vitrified clay pipe, 
structural clay tile, and clay refractories. The Clay Products 
Manufacturing source category has since been replaced by the Brick and 
Structural Clay Products (BSCP) Manufacturing source category and the 
Clay Ceramics Manufacturing source category (see 67 FR 47894, July 22, 
2002).

                    Table 1--NESHAP and Industrial Source Categories Affected by This Action
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                 Category                  NAICS code \1\        Examples of potentially regulated entities
----------------------------------------------------------------------------------------------------------------
Industry.................................          327120  Ceramic wall and floor tile manufacturing facilities
                                                            (Clay Ceramics Manufacturing NESHAP).
                                                   327110  Vitreous plumbing fixtures (sanitaryware)
                                                            manufacturing facilities (Clay Ceramics
                                                            Manufacturing NESHAP).
Federal government.......................  ..............  Not affected.
State/local/tribal government............  ..............  Not affected.
----------------------------------------------------------------------------------------------------------------
\1\ North American Industry Classification System

B. Where can I get a copy of this document and other related 
information?

    In addition to being available in the docket, an electronic copy of 
this action is available on the internet. Following signature by the 
EPA Administrator, the EPA will post a copy of this proposed action at 
https://www.epa.gov/stationary-sources-air-pollution/brick-and-structural-clay-products-national-emission-standards. Following 
publication in the Federal Register, the EPA will post the Federal 
Register version of the proposal and key technical documents at this 
same website.
    A redline version of the regulatory language that incorporates the 
proposed changes in this action is available in the docket for this 
action (Docket ID No. EPA-HQ-OAR-2013-0290).

II. Background

A. What is the statutory authority for this action?

    The statutory authority for this action is provided by sections 112 
and 307(d)(7)(B) of the Clean Air Act (CAA) as amended (42 U.S.C. 7412 
and 7607(d)(7)(B)).

B. What actions preceded these proposed amendments?

    The initial NESHAP for Clay Ceramics Manufacturing was published in 
the Federal Register on May 16, 2003 (68 FR 26690), and codified at 40 
CFR part 63, subpart KKKKK, pursuant to section 112 of the CAA. These 
standards were challenged and subsequently vacated by the United States 
Court of Appeals for the District of Columbia Circuit in 2007. See 
Sierra Club v. EPA, 479 F.3d 875, 876 (D.C. Cir. 2007). Following the 
2007 vacatur of the 2003 rule, the EPA collected additional data and 
information to support new standards for the clay ceramics industry. 
This information is contained in the docket at https://www.regulations.gov (see Docket ID No. EPA-HQ-OAR-2013-0290). On 
December 18, 2014, the EPA proposed new NESHAP for Clay Ceramics 
Manufacturing (79 FR 75622). The EPA received additional data and 
comments during the public comment period. These data and comments were 
considered and analyzed and, where appropriate, revisions to the NESHAP 
were made. The NESHAP for Clay Ceramics Manufacturing was finalized on 
October 26, 2015 (80 FR 65470).
    On December 23, 2015, Kohler Company (Kohler) petitioned the EPA 
for reconsideration of the final rule for Clay Ceramics Manufacturing 
(Docket Item No. EPA-HQ-OAR-2013-0290-0316). In this action, we are 
proposing revisions to the Clay Ceramics Manufacturing NESHAP based on 
information provided by Kohler in their petition, information collected 
by the EPA subsequent to the reconsideration request, and information 
collected by the EPA subsequent to our reconsideration request 
response. The intent of these proposed amendments is to provide some 
flexibility to the clay ceramics manufacturing industry, while 
maintaining the emissions and operational standards of the NESHAP.

III. Summary of the Proposed Amendments

    The EPA is proposing the following amendments to 40 CFR part 63, 
subpart KKKKK, in response to Kohler's petition for reconsideration on 
the October 26, 2016, final rule (80 FR 65470):
    <bullet> Revise the temperature monitoring methodology used to 
demonstrate continuous compliance with the D/F emissions limits from 
sanitaryware first-fire tunnel kilns.
    <bullet> Provide an alternative to the monitoring provisions for VE 
from tunnel kiln exhaust stacks.
    <bullet> Amend the requirements for weekly visual inspections of 
system ductwork and control device equipment for water curtain spray 
booths.
    <bullet> Define cooling stacks in the rule and differentiate 
cooling stacks from kiln exhaust stacks for compliance purposes.
    <bullet> Include provisions to allow emissions averaging for 
emissions from existing tunnel kilns and glaze spray booths and make 
associated revisions to the definition of affected source and 
recordkeeping and reporting requirements.
    The rationale for these proposed amendments is provided in section 
IV of this preamble. This action is limited to the specific issues 
raised in the petition for reconsideration, plus some minor technical 
corrections. There are no changes to emission limits in the

[[Page 42069]]

October 2015 final rule as a result of these proposed amendments.

IV. Rationale for the Proposed Amendments

A. Temperature Monitoring of Tunnel Kilns

    The December 18, 2014, action proposed to require continuous 
monitoring of kiln temperature as a performance parameter for 
demonstrating compliance with the D/F emission limitations. In their 
public comments, Kohler indicated that the proposed temperature 
limitation failed to account for the normal temperature variations that 
occur during operation of a kiln. The October 26, 2015, final rule 
changed the performance parameter from a minimum kiln temperature 
operating limit to a maximum stack temperature operating limit. In our 
response to Kohler's December 23, 2015, petition for reconsideration, 
we indicated that we would grant reconsideration of the temperature 
monitoring requirement (Docket Item No. EPA-HQ-OAR-2013-0290-0319).
    Subsequently, the EPA reviewed new data provided by Kohler 
regarding annual kiln operating temperatures (see Docket Item No. EPA-
HQ-OAR-2013-0290-0340). The data indicate that there is variability in 
kiln operating temperatures based on kiln load and other factors. 
During production of sanitaryware products, the tunnel kiln operating 
temperature is used as the primary operating parameter to maximize 
quality assurance of the product (minimal defects), while minimizing 
fuel usage. In addition, there are periods, based on the number of 
products being run through the kiln (kiln load), and the variation of 
types of products included in each load, where the temperature set 
point must be adjusted to control the ``heat work'' through the kiln. 
Heat work is defined as the temperature and time factors that allow the 
sanitaryware body and glaze coatings to sinter, melt, flow, and fuse. 
The adsorption rate of the fired product (porosity) is determined by 
the heat work (see Docket Item No. EPA-HQ-OAR-2013-0290-0342).
    Based on this information gathered during our discussions with 
Kohler, we are proposing to amend the compliance demonstration 
requirements for sanitaryware first-fire tunnel kilns where no air 
pollution control devices are installed. In this scenario, we propose 
to require the affected sources to monitor kiln temperature during an 
initial D/F compliance test, consisting of three 4-hour test runs, for 
a total of 12 hours. From this 12-hour block of time, consisting of 1-
hour increments, the affected sources would calculate two values: (1) 
The standard deviation of the 12 1-hour temperature measurements, and 
(2) 1 percent of the 12-hour block average. The affected sources would 
determine which of the two values would provide the greatest 
variability (i.e., the highest value) and would then add this value to 
the 12-hour block average measured during the compliance test. This 
value would become the maximum temperature at which the kiln would be 
allowed to operate during normal operations. We are setting a maximum 
operating limit because, due to variability, kiln operating 
temperatures at sanitaryware facilities sometimes fall below the value 
observed during the compliance test. Temperatures have also been found 
to fall in the duct.
    Under this scenario, the affected sources would be required to 
monitor 12-hour averages of their kiln during normal operations and 
demonstrate compliance by comparing these 12-hour averages to the value 
calculated during the D/F compliance test. This should allow 
variability of the hourly temperature fluctuations as a 12-hour block 
average and, additionally, provide variability by having multiple 
options for calculating the kiln variability into the operating limit.
    In this proposed amendment to the rule, owners or operators would 
be required to maintain records of performance tests and continuous 
compliance data as is required in the October 2015 final rule and would 
be required to comply with the corresponding reporting requirements of 
the October 2015 final rule. Accordingly, in this action, the EPA is 
proposing to amend Table 2 to 40 CFR part 63, subpart KKKKK, to include 
the revised operating limit, amend Table 4 to specify the requirements 
for establishing the operating limit during the D/F compliance test, 
and amend Tables 6 and 7 to specify the associated initial and 
continuous compliance requirements, respectively. These amendments to 
the rule only apply to sanitaryware first-fire tunnel kilns. The D/F 
compliance requirements of all other emission sources regulated by the 
rule remain unchanged.
    We are also requesting comment on whether to consider an 
alternative temperature monitoring requirement. Similar to the previous 
scenario, the affected sources would monitor kiln temperature during 
the initial D/F compliance test, calculate both the standard deviation 
of the 12 1-hour temperature measurements and 1 percent of the 12-hour 
block average, and decide which of the two values would provide the 
greatest variability (i.e., the highest value). However, this second 
scenario has the affected sources subtract this value from the 12-hour 
block average measured during the compliance test to determine the 
minimum temperature at which the kiln would be allowed to operate 
during normal operations. Similar to the previous scenario, this 
alternative would require the affected sources to monitor 12-hour 
averages of their kiln during normal operations and demonstrate 
compliance by comparing these 12-hour averages to the value calculated 
during the D/F compliance test.
    The proposed amendments do not change the requirement for affected 
facilities operating sanitaryware first-fire tunnel kilns to 
demonstrate compliance with the D/F emission limit through repeat 5-
year stack testing. The proposed amendments to the rule provide 
affected facilities without air pollution control devices with a 
revised means to demonstrate continuous compliance at all times, 
including those times where facilities must adjust kiln temperatures to 
control the heat work through the kiln. If an affected facility 
determines through continuous kiln temperature monitoring that they 
cannot demonstrate compliance using the method proposed, they would be 
required to maintain kiln temperatures that demonstrate compliance 
until such time that additional stack testing could be performed and a 
new temperature threshold determined.

B. Visible Emissions Monitoring of Tunnel Kiln Exhaust

    In its petition for reconsideration, Kohler explained the basis for 
its position that VE monitoring is not a useful parameter to assess 
kiln operations. In addition, Kohler explained that process errors that 
would potentially lead to an increase in VE from a kiln would more 
readily be identified through one of multiple parameters monitored 
continuously by the kiln operator. In our response to this request, we 
indicated that, although we were denying the reconsideration request on 
this issue, we would evaluate any additional information provided by 
Kohler and determine whether any further action would be warranted (see 
Docket Item No. EPA-HQ-OAR-2013-0290-0319).
    In a subsequent meeting, the EPA and Kohler discussed alternatives 
to the VE testing requirement in the final rule. The information 
provided by Kohler (see Docket Item No. EPA-HQ-OAR-2013-0290-0339) 
supports the

[[Page 42070]]

conclusion that monitoring kiln temperature is a more accurate and 
sensitive parameter in determining times when the PM emissions may be 
increased, rather than periodically monitoring VE from the kiln stack. 
As a result, the EPA is proposing to include an alternative that would 
require the source to first take the necessary steps to maintain the 
temperature profile of each tunnel kiln. For any incidence where a kiln 
exceeds its normal operating temperature profile, the source would then 
be required to perform VE observations at the stack of the affected 
kiln according to the procedures of EPA Method 22. Accordingly, in this 
action, the EPA is proposing to amend 40 CFR 63.8620(e) to include 
revised procedures for demonstrating continuous compliance to include 
the requirement for facilities to maintain normal kiln temperature, and 
only perform VE observations when the kiln temperatures are sporadic or 
out of the normal range of operation. Additionally, the EPA is 
proposing to amend Tables 2 and 7 to 40 CFR part 63, subpart KKKKK, to 
specify the operating limits and continuous compliance requirements, 
respectively.

C. Weekly Visual Inspections of Water Curtain Spray Booths

    Regarding the issue of visual inspections for system ductwork and 
control device equipment for water curtain spray booths, Kohler and the 
EPA have discussed the weekly inspection requirement. Kohler 
representatives explained that current maintenance procedures eliminate 
the need for the weekly inspections. Kohler's operators routinely 
conduct preventative maintenance on the water curtain control, such as 
regular periodic fan maintenance, as well as a weekly wash-out. They 
also explained how their current procedures ensure that they become 
aware in a relatively short period of time if there is an issue with 
the water curtain or the ductwork, as they can see if particulates or 
other impurities are getting into the glaze that has been sprayed onto 
a piece of ware. If this were to occur, the operator would stop the 
glazing operations to fix the issue. Kohler provided the EPA additional 
information about the quarterly preventative maintenance that they 
conduct, available in Docket Item No. EPA-HQ-OAR-2013-0290-0331. Kohler 
also indicated that ductwork inspections do not have any value, since 
the water is the control, and, therefore, any air in the ductwork is 
already controlled (see Docket Item No. EPA-HQ-OAR-2013-0290-0336).
    During several visits to the Kohler facility in Spartanburg, South 
Carolina (see Docket Item Nos. EPA-HQ-OAR-2013-0290-0005, 0331, and 
0341), the EPA observed the configuration of a typical spray booth, and 
the ductwork associated with the booth. From the observations, it was 
apparent that the booth operator would indeed be able to see if 
particulates or other impurities were getting into the glaze that has 
been sprayed onto a piece of ware, and that the requirement for weekly 
inspections would not be required based on the configuration of the 
booth.
    Based on its evaluation of the additional data, and after observing 
the water curtain spray booth operations at the Kohler facility in 
Spartanburg, South Carolina, the EPA is proposing to remove the weekly 
visual inspection requirement from the rule but retain the other two 
monitoring requirements (daily inspections to verify the presence of 
water flow to the wet control system and annual inspections of the 
interior of the control equipment). Accordingly, in this action, the 
EPA is proposing to amend Table 2 to 40 CFR part 63, subpart KKKKK, to 
remove the weekly visual inspections part of the operating limit for 
glaze spray operations equipped with a water curtain and amend Table 7 
to remove the associated continuous compliance requirement.

D. Cooling Stacks

    In its response to Kohler's petition that cooling stacks to be 
tested at sanitaryware manufacturing facilities should be limited to 
those with an oxygen content at or below 20.4 percent, the EPA noted 
that the value of 20.5 percent that the EPA finalized was based on the 
20.5 percent threshold concentration provided by Kohler in an email to 
the EPA clarifying its testing proposal, and this email was present in 
the docket at proposal (see Docket Item No. EPA-HQ-OAR-2013-0290-0119). 
At the time, the EPA concluded that a reconsideration on this issue was 
not warranted pursuant to CAA section 307(d)(7)(B) and denied the 
reconsideration petition on this issue. Notwithstanding this denial, 
the EPA stated that it would evaluate any additional information 
provided by the petitioner and determine whether any further action is 
warranted (see Docket Item No. EPA-HQ-OAR-2013-0290-0319).
    In a subsequent meeting, Kohler and the EPA discussed Kohler's 
request to revise this aspect of the rule and options for any such 
revision, which included changing the oxygen content in the Clay 
Ceramics Manufacturing NESHAP from 20.5 percent to 20.4 percent or 
adding a definition for ``cooling stack'' that would exclude it from 
applicability (see Docket Item No. EPA-HQ-OAR-2013-0290-0331). As a 
result of this and later contacts (see Docket Item Nos. EPA-HQ-OAR-
2013-0290-0335 through 0338), the EPA has a better understanding of the 
purpose and operations of the cooling stacks. Based on this additional 
knowledge, the EPA is proposing to revise 40 CFR 63.8595(c) to 
specifically exclude cooling stacks from stack testing at sanitaryware 
manufacturing facilities, revise 40 CFR 63.8665 to include a definition 
for ``cooling stack'' and, for additional clarity, include a definition 
for ``products of combustion (POC) stack,'' which is the type of stack 
that would be tested.

E. Emissions Averaging

    In its petition for reconsideration, Kohler requested that the EPA 
allow the use of emissions averaging as a compliance option in the Clay 
Ceramics Manufacturing NESHAP for existing tunnel kilns and glaze spray 
booths. Initially, in the December 18, 2014, proposed rule (79 FR 
75649), the EPA had requested public comment on the use of emissions 
averaging in the BSCP Manufacturing NESHAP. In that 2014 proposal, we 
also noted that emissions averaging would not be applicable to new 
sources and could only be used between existing tunnel kilns in the 
same size subcategory (79 FR 75649). In this action, we are proposing 
amendments to 40 CFR 63.8595 in the Clay Ceramics Manufacturing NESHAP 
that would include alternative emissions averaging limits for the 
following:
    <bullet> PM and Hg, in units of pounds per ton (lb/ton) of fired 
product for existing floor tile roller kilns;
    <bullet> PM and Hg, in units of lb/ton of fired product for 
existing wall tile roller kilns;
    <bullet> PM and Hg, in units of lb/ton of greenware fired for 
existing first-fired sanitaryware tunnel kilns;
    <bullet> PM and Hg, in units of lb/ton of first-fired glaze sprayed 
(dry weight basis) for existing tile glaze lines with glaze spraying; 
and
    <bullet> PM, in units of lb/ton of first-fire glaze sprayed (dry 
weight basis), for existing sanitaryware manual, spray machine, or 
robot glaze applications.
    As stated in the December 18, 2014, proposed rule, the EPA has 
concluded that it is permissible under the appropriate circumstances to 
establish within a NESHAP a unified compliance regimen that permits 
averaging within an affected source across individual affected units 
subject to the standard

[[Page 42071]]

under certain conditions (79 FR 75650). In addition, averaging across 
affected units is permitted only if it can be demonstrated that the 
total quantity of any hazardous air pollutant (HAP) will not be greater 
under the averaging mechanism than it could be if each individual 
affected unit complied separately with the applicable standard. The 
conditions required for emissions averaging include: (1) No averaging 
between different types of pollutants; (2) no averaging between sources 
that are not part of the same affected source; (3) no averaging between 
individual sources within a single major source if the individual 
sources are not subject to the same NESHAP; and (4) no averaging 
between existing sources and new sources.
    In this action, we are proposing that emissions averaging would be 
allowed if they meet the following requirements. First, emissions 
averaging would only be permitted between individual sources at a 
single existing affected source and would only be permitted between 
individual sources subject to the Clay Ceramics Manufacturing NESHAP. 
Further, emissions averaging would not be permitted between two or more 
different affected sources or between two or more sources in different 
subcategories. Finally, new sources could not use emissions averaging. 
In addition, we are proposing that any emissions averaging alternative 
would require each facility that intends to use emissions averaging to 
submit an emissions averaging plan, which will provide additional 
assurance that the necessary criteria will be followed. In such an 
emissions averaging plan, the facility would include the identification 
of: (1) All units in the averaging group, (2) the control technology 
installed, (3) the process parameter that will be monitored, (4) the 
specific control technology or pollution prevention measure to be used, 
(5) the test plan for the measurement of the HAP being averaged, and 
(6) the operating parameters to be monitored for each control device.
    Under the proposed emissions averaging provision, the emissions for 
each unit in the averaging group would be capped at the emission level 
being achieved on the effective date of the final rule. The caps ensure 
that emissions do not increase above the emission levels that sources 
currently are designed, operated, and maintained to achieve. In the 
absence of performance tests, in documenting these caps, the affected 
sources would document the type, design, and operating specification of 
control devices installed on the effective date of the final rule to 
ensure that existing controls are not removed or operated less 
efficiently. The proposed emissions averaging provision would not apply 
to individual units if the unit shares a common stack with units in 
other subcategories, because, in that circumstance, it is not possible 
to distinguish the emissions from each individual unit.
    For those cases where the emissions averaging provisions are used, 
the EPA is proposing to add a definition for ``emissions averaging 
sources'' in 40 CFR 63.8665 that includes those existing sources 
included in the emissions average. The EPA is also proposing to amend 
Table 1 to 40 CFR part 63, subpart KKKKK, to include the applicable 
emission limits determined under the emissions averaging provisions. In 
addition, the EPA is proposing to revise the reporting and 
recordkeeping provisions in 40 CFR 63.8630, 63.8635, and 63.8640 to 
include the following requirements where the emissions averaging 
provisions are used: (1) Certifying in the notification of compliance 
status that the emissions level achieved or the control technology 
employed is no less stringent than the level or control technology 
contained in the notification; (2) reporting in the compliance report 
the emissions level that was being achieved or the control technology 
employed on the effective date of the rule; and (3) keeping a copy of 
the emissions averaging implementation plan, all required calculations, 
including monthly records of process rate, as applicable, and 
monitoring records.
    The emissions averaging provisions that we are proposing are based 
in part on the emissions averaging provisions in the Hazardous Organic 
NESHAP (HON). The legal basis and rationale for the HON emissions 
averaging provisions were provided in the preamble to the final HON (59 
FR 19425, April 22, 1994).

F. Technical Corrections

    Technical corrections are being proposed to correct inaccuracies 
that were promulgated in the final rule, replace text that might be 
considered confusing, and correct outdated information. We are 
soliciting comment only on whether the proposed changes provide the 
intended accuracy, clarity, and consistency. These proposed changes are 
described in Table 2 of this preamble and shown in the proposed 
regulatory text below. We request comment on all of these proposed 
changes.

Table 2--Proposed Technical Corrections to 40 CFR Part 63, Subpart KKKKK
------------------------------------------------------------------------
                                             Description of proposed
         Table to subpart KKKKK                     correction
------------------------------------------------------------------------
40 CFR 63.8635(g)(1)...................  Update the addresses for EPA
                                          websites.
Table 2, item 3........................  To avoid confusion, revise the
                                          description of the operating
                                          limit for carbon flow rate.
Table 2, items 10 and 11...............  Revise the block period for
                                          average operating temperature
                                          for spray dryers and floor
                                          tile press dryers from 3-hour
                                          to 4-hour to align with the
                                          test run length for EPA Method
                                          23.
Table 4, item 8........................  In the measurement of carbon
                                          flow rate date, include data
                                          from the Hg and D/F
                                          performance test data for
                                          tunnel or roller kilns
                                          equipped with an activated
                                          carbon injection system.
Table 4, items 11 and 12...............  Revise the block average for
                                          operating temperature for
                                          spray dryers and floor tile
                                          press dryers from 3-hour to 4-
                                          hour to align with the test
                                          run length for EPA Method 23.
Table 6, items 2.a.ii, 2.b.ii, 2.c.ii,   To avoid confusion, remove
 3.a.ii, 3.b.ii, 3.c.ii, 4.a.ii,          mention of the specific block
 4.b.ii, 4.c.ii, 5.a.ii, 5.b.ii,          period and simply refer to
 6.a.ii, 7.a.ii, 8.a.ii, 9.a.ii,          ``the period of the initial
 10.a.ii, 11.a.ii, 12.a.ii, 12.b.ii,      performance test.''
 12.c.ii, 13.a.ii, 13.b.ii, 13.c.ii,
 14.a.ii, 14.b.ii, 14.c.ii, 15.a.ii,
 15.b.ii, 16.a.ii, 17.a.ii, 18.a.ii,
 19.a.ii, 20.a.ii, and 21.a.ii.
Table 7, items 10 and 11...............  Revise the block average for
                                          operating temperature for
                                          spray dryers and floor tile
                                          press dryers from 3-hour to 4-
                                          hour to align with the test
                                          run length for EPA Method 23.
------------------------------------------------------------------------


[[Page 42072]]

V. Summary of Cost, Environmental, and Economic Impacts

    This action will have no cost, environmental, energy, or economic 
impacts beyond those impacts presented in the October 26, 2015, final 
rule for Clay Ceramics Manufacturing and may result in a cost savings 
due to the changes in monitoring and testing requirements discussed in 
the previous section. The technical corrections are cost neutral.

VI. Statutory and Executive Order Reviews

    Additional information about these statutes and Executive Orders 
can be found at https://www.epa.gov/laws-regulations/laws-and-executive-orders.

A. Executive Order 12866: Regulatory Planning and Review and Executive 
Order 13563: Improving Regulation and Regulatory Review

    This action is not a significant regulatory action and was, 
therefore, not submitted to the Office of Management and Budget (OMB) 
for review.

B. Executive Order 13771: Reducing Regulations and Controlling 
Regulatory Costs

    This action is considered an Executive Order 13771 deregulatory 
action. The proposed rule is expected to provide meaningful burden 
reduction by deregulating aspects of the sanitaryware manufacturing 
process, but do not result in changes in costs to comply.

C. Paperwork Reduction Act (PRA)

    This action does not impose any new information collection burden 
under the PRA. Burden is defined at 5 CFR 1320.3(b). OMB has previously 
approved the information collection activities contained in the 
existing regulation (40 CFR part 63, subpart KKKKK) and has assigned 
OMB control number 2060-0513. This action does not change the 
information collection requirements.

D. Regulatory Flexibility Act (RFA)

    I certify that this action will not have a significant economic 
impact on a substantial number of small entities under the RFA. In 
making this determination, the impact of concern is any significant 
adverse economic impact on small entities. An agency may certify that a 
rule will not have a significant economic impact on a substantial 
number of small entities if the rule relieves regulatory burden, has no 
net burden, or otherwise has a positive economic effect on the small 
entities subject to the rule. This proposed rule will not impose any 
additional requirements on small entities, only alternatives to 
existing requirements. We have, therefore, concluded that this action 
will have no net regulatory burden for all directly regulated small 
entities.

E. Unfunded Mandates Reform Act (UMRA)

    This action does not contain an unfunded mandate as described in 
UMRA, 2 U.S.C. 1531-1538, and does not significantly or uniquely affect 
small governments. The action imposes no enforceable duty on any state, 
local, or tribal governments or the private sector.

F. Executive Order 13132: Federalism

    This action does not have federalism implications. It will not have 
substantial direct effects on the states, on the relationship between 
the national government and the states, or on the distribution of power 
and responsibilities among the various levels of government.

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

    This action does not have tribal implications as specified in 
Executive Order 13175. It will neither impose substantial direct 
compliance costs on federally recognized tribal governments, nor 
preempt tribal law. The proposed amendments impose no requirements on 
tribal governments. Thus, Executive Order 13175 does not apply to this 
action.

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

    The EPA interprets Executive Order 13045 as applying only to those 
regulatory actions that concern environmental health or safety risks 
that the EPA has reason to believe may disproportionately affect 
children, per the definition of ``covered regulatory action'' in 
section 2-202 of the Executive Order. This action is not subject to 
Executive Order 13045 because it does not concern an environmental 
health risk or safety risk.

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

    This action is not subject to Executive Order 13211, because it is 
not a significant regulatory action under Executive Order 12866.

J. National Technology Transfer and Advancement Act (NTTAA)

    This rulemaking does not involve technical standards.

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

    The EPA believes that this action does not have disproportionately 
high and adverse human health or environmental effects on minority 
populations, low-income populations, and/or indigenous peoples, as 
specified in Executive Order 12898 (59 FR 7629, February 16, 1994). The 
documentation for this decision is contained in the docket (See ``EJ 
Screening Report for Clay Ceramics,'' Docket Item No. EPA-HQ-OAR-2013-
0290-0241).

List of Subjects in 40 CFR Part 63

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

    Dated: August 8, 2018.
Andrew R. Wheeler,
Acting Administrator.

    For the reasons set out in the preamble, 40 CFR part 63 is proposed 
to be amended as follows:

PART 63--NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS 
FOR SOURCE CATEGORIES

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

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

Subpart KKKKK--[Amended]

0
2. Section 63.8595 is amended by:
0
a. Revising paragraph (c);
0
b. Redesignating paragraph (h) as paragraph (i);
0
c. Adding a new paragraph (h); and
0
d. Revising newly redesignated paragraphs (i) introductory text and 
(i)(1) introductory text.
    The revisions and addition read as follows:


Sec.  63.8595  How do I conduct performance tests and establish 
operating limits?

* * * * *
    (c) Each performance test must be conducted according to the 
requirements in Sec.  63.7 and under the specific conditions in Table 4 
to this subpart. Stacks to be tested at sanitaryware manufacturing 
facilities shall be limited to products of

[[Page 42073]]

combustion (POC) stacks and not include cooling stacks.
* * * * *
    (h)(1) As an alternative to meeting the requirements of Sec.  
63.8555 for PM or mercury, if you have more than one existing source in 
any subcategories located at your facility, you may demonstrate 
compliance by emissions averaging, if your averaged emissions are not 
more than 90 percent of the applicable emission limit, according to the 
procedures in this section. You may not include new sources in an 
emissions average.
    (2) For a group of two or more existing sources in the same 
subcategory that each vent to a separate stack, you may average PM or 
mercury emissions among existing units to demonstrate compliance with 
the limits in Table 1 to this subpart as specified in paragraph 
(h)(2)(i) through (iv) of this section, if you satisfy the requirements 
in paragraphs (h)(3) and (4) of this section.
    (i) You may average across existing sources in the same kiln type 
and size category (e.g., roller or tunnel kilns, large or small kilns) 
and the same subcategory (e.g., sanitaryware manual or spray machine or 
robot glaze application) where applicable;
    (ii) You may not include a unit in the emissions average if the 
unit shares a common stack with units in other subcategories;
    (iii) You may not include spray dryers or press dryers in the 
emissions average; and
    (iv) You may not average between different types of pollutants.
    (3) The averaged emissions rate from the existing sources 
participating in the emissions averaging option must not exceed 90 
percent of the limits in Table 1 to this subpart at all times the 
affected units are subject to numeric emission limits following the 
compliance date specified in Sec.  63.8545.
    (4)(i) You must demonstrate initial compliance using the maximum 
process rate and the results of the initial performance tests.
    (ii) You must use Equation 9 to demonstrate that the PM or mercury 
emissions from all existing units participating in the emissions 
averaging option for that pollutant do not exceed the emission limits 
in Table 1 to this subpart.
[GRAPHIC] [TIFF OMITTED] TP20AU18.005

Where:

AveWeightedEmissions = Average weighted emissions for PM or mercury, 
in units of kilograms (pounds) per megagram (ton) of fired product 
for existing floor tile roller kilns and wall tile roller kilns, 
greenware fired for existing first-fired sanitaryware tunnel kilns, 
and first-fire glaze sprayed (dry weight basis) for existing tile 
glaze lines with glaze spraying and average weighted emissions for 
PM, in units of kilograms (pounds) per megagram (ton) of first-fire 
glaze sprayed (dry weight basis) for existing sanitaryware manual, 
spray machine, or robot glaze applications
E<INF>i</INF> = Emission rate (as determined during the initial 
compliance demonstration) of PM or mercury from unit i, in units of 
kilograms (pounds) per megagram (ton). Determine the emission rate 
for PM or mercury by performance testing according to Table 4 to 
this subpart using the applicable equation in Sec.  63.8595(f)
P<INF>max i</INF> = Maximum process rate for unit i, in units of 
megagrams (tons)
n = Number of units participating in the emissions averaging option
1.1 = Required discount factor

    (5)(i) After the initial compliance demonstration described in 
paragraph (h)(4) of this section, you must demonstrate compliance on a 
monthly basis determined at the end of every month (12 times per year) 
according to paragraph (h)(5)(ii) of this section. The first monthly 
period begins on the compliance date specified in Sec.  63.8545.
    (ii) For each calendar month, you must use Equation 10 of this 
section to calculate the average weighted emission rate for that month.
[GRAPHIC] [TIFF OMITTED] TP20AU18.006

Where:

AveWeightedEmissions = Average weighted emissions for PM or mercury, 
in units of kilograms (pounds) per megagram (ton) of fired product 
for existing floor tile roller kilns and wall tile roller kilns, 
greenware fired for existing first-fired sanitaryware tunnel kilns, 
and first-fire glaze sprayed (dry weight basis) for existing tile 
glaze lines with glaze spraying and average weighted emissions for 
PM, in units of kilograms (pounds) per megagram (ton) of first-fire 
glaze sprayed (dry weight basis) for existing sanitaryware manual, 
spray machine, or robot glaze applications, for that calendar month
E<INF>i</INF> = Emission rate (as determined during the most recent 
compliance demonstration) of PM or mercury from unit i, in units of 
kilograms (pounds) per megagram (ton). Determine the emission rate 
for PM or mercury by performance testing according to Table 4 to 
this subpart using the applicable equation in Sec.  63.8595(f)
P<INF>month i</INF> = The process rate for that calendar month for 
unit i, in units of megagrams (tons)
n = Number of units participating in the emissions averaging option
1.1 = Required discount factor

    (6) Until 12 monthly weighted average emission rates have been 
accumulated, calculate and report only the average weighted emission 
rate determined under paragraph (h)(5)(ii) of this section for each 
calendar month. After 12 monthly weighted average emission rates have 
been accumulated, for each subsequent calendar month, use Equation 11 
to calculate the 12-month rolling average of the monthly weighted 
average emission rates for the current calendar month and the previous 
11 calendar months.
[GRAPHIC] [TIFF OMITTED] TP20AU18.007


[[Page 42074]]


Where:

E<INF>avg</INF> = 12-month rolling average emission rate for PM or 
mercury, in units of kilograms (pounds) per megagram (ton) of fired 
product for existing floor tile roller kilns and wall tile roller 
kilns, greenware fired for existing first-fired sanitaryware tunnel 
kilns, and first-fire glaze sprayed (dry weight basis) for existing 
tile glaze lines with glaze spraying and average weighted emissions 
for PM, in units of kilograms (pounds) per megagram (ton) of first-
fire glaze sprayed (dry weight basis) for existing sanitaryware 
manual, spray machine, or robot glaze applications
ER<INF>i</INF> = Monthly weighted average, for calendar month ``i,'' 
in units of kilograms (pounds) per megagram (ton), as calculated by 
paragraph (h)(5)(ii) of this section

    (7) You must develop, and submit upon request to the applicable 
Administrator for review and approval, an implementation plan for 
emissions averaging according to the following procedures and 
requirements in paragraphs (h)(7)(i) through (iv) of this section.
    (i) If requested, you must submit the implementation plan no later 
than 180 days before the date that the facility intends to demonstrate 
compliance using the emissions averaging option.
    (ii) You must include the information contained in paragraphs 
(h)(7)(ii)(A) through (D) of this section in your implementation plan 
for all emission sources included in an emissions average:
    (A) The identification of all existing sources in the averaging 
group, including for each either the applicable HAP emissions level or 
the control technology installed and the date on which you are 
requesting emissions averaging to commence;
    (B) The specific control technology or pollution prevention measure 
to be used for each source in the averaging group and the date of its 
installation or application. If the pollution prevention measure 
reduces or eliminates emissions from multiple sources, the owner or 
operator must identify each source;
    (C) The test plan for the measurement of emissions in accordance 
with the requirements in Sec.  63.8595;
    (D) The operating parameters to be monitored for each control 
system or device consistent with Sec.  63.8555 and Table 2 to this 
subpart, and a description of how the operating limits will be 
determined;
    (iii) If submitted upon request, the Administrator shall review and 
approve or disapprove the plan according to the following criteria:
    (A) Whether the content of the plan includes all of the information 
specified in paragraph (h)(7)(ii) of this section; and
    (B) Whether the plan presents sufficient information to determine 
that compliance will be achieved and maintained.
    (iv) The applicable Administrator shall not approve an emissions 
averaging implementation plan containing any of the following 
provisions:
    (A) Any averaging between emissions of differing pollutants or 
between differing sources; or
    (B) The inclusion of any emission source other than an existing 
unit in the same subcategories.
    (i) For each affected source that is subject to the emission limits 
specified in Table 1 to this subpart and is equipped with an APCD that 
is not addressed in Table 2 to this subpart or that is using process 
changes as a means of meeting the emission limits in Table 1 to this 
subpart, you must meet the requirements in Sec.  63.8(f) and paragraphs 
(i)(1) and (2) of this section.
    (1) Submit a request for approval of alternative monitoring 
procedures to the Administrator no later than the notification of 
intent to conduct a performance test. The request must contain the 
information specified in paragraphs (i)(1)(i) through (iv) of this 
section.
* * * * *
0
3. Section 63.8620 is amended by:
0
a. Redesignating paragraphs (e)(1) through (3) as paragraphs (e)(1)(i) 
through (iii);
0
b. Redesignating paragraph (e) introductory text as paragraph (e)(1) 
and revising it; and
0
c. Adding new paragraph (e)(2) and paragraphs (f) and (g).
    The revision and additions read as follows:


Sec.  63.8620  How do I demonstrate continuous compliance with the 
emission limitations and work practice standards?

* * * * *
    (e)(1) VE testing. You must demonstrate continuous compliance with 
the operating limits in Table 2 to this subpart for visible emissions 
(VE) from tunnel or roller kilns that are uncontrolled or equipped with 
DIFF, DLS/FF, or other dry control device by monitoring VE at each kiln 
stack according to the requirements in paragraphs (e)(1)(i) through 
(iii) of this section.
* * * * *
    (2) Alternative to VE testing. You must demonstrate continuous 
compliance with the operating limits in Table 2 to this subpart for 
kiln temperature profile for tunnel or roller kilns that are 
uncontrolled or equipped with DIFF, DLS/FF, or other dry control device 
by maintaining the kiln temperature profile within acceptable 
parameters and, for any incidence where the kiln is out of control 
(i.e., exceeds its temperature profile), monitoring VE at each kiln 
stack according to the requirements in paragraphs (e)(2)(i) through 
(iii) of this section.
    (i) Perform VE observations at the stack of each out-of-control 
kiln according to the procedures of Method 22 of 40 CFR part 60, 
appendix A-7. The duration of each Method 22 test must be at least 15 
minutes.
    (ii) If VE are observed during any test conducted using Method 22 
of 40 CFR part 60, appendix A-7, you must promptly initiate and 
complete corrective actions according to your OM&M plan.
    (iii) If VE are observed during any test conducted using Method 22 
of 40 CFR part 60, appendix A-7, you must report these deviations by 
following the requirements in Sec.  63.8635.
    (f) Following the compliance date, you must demonstrate compliance 
with the emissions averaging provision under this subpart on a 
continuous basis by meeting the requirements of paragraphs (f)(1) and 
(2) of this section.
    (1) For each calendar month, demonstrate compliance with the 
average weighted emissions limit for the existing units participating 
in the emissions averaging option as determined in Sec.  63.8595(h)(5) 
and (6).
    (2) For each existing unit participating in the emissions averaging 
option, you must comply with the continuous compliance requirements in 
Table 7 to this subpart.
    (g) Any instance where you fail to comply with the continuous 
monitoring requirements in paragraphs (f)(1) and (2) of this section is 
a deviation.
0
4. Section 63.8630 is amended by revising paragraph (c) introductory 
text and adding paragraph (c)(4) to read as follows:


Sec.  63.8630  What notifications must I submit and when?

* * * * *
    (c) If you are required to conduct a performance test or other 
initial compliance demonstration as specified in Tables 4 and 6 to this 
subpart, your Notification of Compliance Status as specified in Table 9 
to this subpart must include the information in paragraphs (c)(1) 
through (4) of this section.
* * * * *
    (4) Identification of whether you plan to demonstrate compliance by 
emissions averaging. If you plan to demonstrate

[[Page 42075]]

compliance by emissions averaging, report the emissions level that was 
being achieved or the control technology employed on December 28, 2015.
* * * * *
0
5. Section 63.8635 is amended by:
0
a. Revising paragraph (c) introductory text;
0
b. Revising paragraph (c)(4)(iii)(C);
0
c. Adding paragraph (c)(9); and
0
d. Revising paragraph (g)(1).
    The revisions and addition read as follows:


Sec.  63.8635  What reports must I submit and when?

* * * * *
    (c) The compliance report must contain the information in 
paragraphs (c)(1) through (9) of this section.
* * * * *
    (4) * * *
    (iii) * * *
    (C) Based on the information recorded under paragraphs 
(c)(4)(iii)(A) and (B) of this section, compute the annual percent of 
affected source operating uptime during which the control device was 
offline for routine maintenance using Equation 12.
[GRAPHIC] [TIFF OMITTED] TP20AU18.008


Where:

RM = Annual percentage of affected source uptime during which 
control device was offline for routine control device maintenance
DT<INF>p</INF> = Control device downtime claimed under the routine 
control device maintenance alternative standard for the previous 
semiannual compliance period
DT<INF>c</INF> = Control device downtime claimed under the routine 
control device maintenance alternative standard for the current 
semiannual compliance period
SU<INF>p</INF> = Affected source uptime for the previous semiannual 
compliance period
SU<INF>c</INF> = Affected source uptime for the current semiannual 
compliance period

* * * * *
    (9) If you plan to demonstrate compliance by emissions averaging, 
certify the emissions level achieved or the control technology employed 
is no less stringent than the level or control technology contained in 
the notification of compliance status in Sec.  63.8630(c)(4).
* * * * *
    (g) * * *
    (1) For data collected using test methods supported by the EPA's 
Electronic Reporting Tool (ERT) as listed on the EPA's ERT website 
(https://www.epa.gov/electronic-reporting-air-emissions/electronic-reporting-tool-ert) at the time of the test, you must submit the 
results of the performance test to the EPA via the Compliance and 
Emissions Data Reporting Interface (CEDRI). The CEDRI database can be 
accessed through the EPA's Central Data Exchange (CDX) (https://cdx.epa.gov/). Performance test data must be submitted in a file format 
generated through the use of the EPA's ERT or an alternate electronic 
file format consistent with the extensible markup language (XML) schema 
listed on the EPA's ERT website. If you claim that some of the 
performance test information being submitted is confidential business 
information (CBI), you must submit a complete file generated through 
the use of the EPA's ERT or an alternate electronic file consistent 
with the XML schema listed on the EPA's ERT website, including 
information claimed to be CBI, on a compact disc, flash drive, or other 
commonly used electronic storage media to the EPA. The electronic media 
must be clearly marked as CBI and mailed to U.S. EPA/OAQPS/CORE CBI 
Office, Attention: Group Leader, Measurement Policy Group, MD C404-02, 
4930 Old Page Rd., Durham, NC 27703. The same ERT or alternate file 
with the CBI omitted must be submitted to the EPA via the EPA's CDX as 
described earlier in this paragraph.
* * * * *
0
6. Section 63.8640 is amended by revising paragraph (c) introductory 
text and adding paragraph (c)(11) to read as follows:


Sec.  63.8640   What records must I keep?

* * * * *
    (c) You must also maintain the records listed in paragraphs (c)(1) 
through (11) of this section.
* * * * *
    (11) If you elect to average emissions consistent with Sec.  
63.8595(h), you must additionally keep a copy of the emissions 
averaging implementation plan required in Sec.  63.8595(h)(7), all 
calculations required under Sec.  63.8595(h), including monthly records 
of process rate, as applicable, and monitoring records consistent with 
Sec.  63.8620(f).
0
7. Section 63.8665 is amended by adding definitions for ``cooling 
stack,'' ``emissions averaging sources,'' and ``products of combustion 
(POC) stack,'' in alphabetical order to read as follows:


Sec.  63.8665   What definitions apply to this subpart?

* * * * *
    Cooling stack means a stack (release point) installed on the 
cooling zone of a tunnel kiln to release air used to cool down the 
fired product from its maximum temperature to room temperature. A 
cooling stack does not release any air from the firing zone of the 
tunnel kiln.
* * * * *
    Emissions averaging sources means, for purposes of the emissions 
averaging provisions of Sec.  63.8595(h), the collection of all 
existing ceramic tile roller kilns, sanitaryware tunnel kilns, ceramic 
tile glaze lines using glaze spraying, and sanitaryware glaze spray 
booths, within a kiln type and size category and within a subcategory.
* * * * *
    Products of combustion (POC) stack means a stack (release point) 
installed on the front end of the firing zone of a tunnel kiln to 
release air used to heat the greenware from room temperature to its 
maximum temperature.
* * * * *
0
8. Table 1 to subpart KKKKK is amended by adding the entries 22 and 23 
to read as follows:

Table 1 to Subpart KKKKK of Part 63--Emission Limits

    As stated in Sec.  63.8555, you must meet each emission limit in 
the following table that applies to you:

------------------------------------------------------------------------
                                    You must meet the following emission
          For each . . .                        limits . . .
------------------------------------------------------------------------
 
                              * * * * * * *
22. Collection of emissions         PM emissions must not exceed the
 averaging sources.                  applicable emission limit, under
                                     the emissions averaging option, as
                                     determined using Equations 9
                                     through 11.

[[Page 42076]]

 
23. Collection of emissions         Hg emissions must not exceed the
 averaging sources.                  applicable emission limit, under
                                     the emissions averaging option, as
                                     determined using Equations 9
                                     through 11.
------------------------------------------------------------------------

0
9. Table 2 to subpart KKKKK is revised to read as follows:

Table 2 to Subpart KKKKK of Part 63--Operating Limits

    As stated in Sec.  63.8555, you must meet each operating limit in 
the following table that applies to you:

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              For each . . .                                                You must . . .                                        Or you must . . .
--------------------------------------------------------------------------------------------------------------------------------------------------------
1. Tunnel or roller kiln equipped with a   a. If you use a bag leak detection system, initiate corrective action within 1   i. Maintain no VE from the
 DIFF or DLS/FF.                            hour of a bag leak detection system alarm and complete corrective actions in     DIFF or DLS/FF stack; or
                                            accordance with your OM&M plan; operate and maintain the fabric filter such     ii. Maintain your kiln
                                            that the alarm is not engaged for more than 5 percent of the total operating     temperature profile.
                                            time in a 6-month block reporting period; and
                                           b. Maintain free-flowing lime in the feed hopper or silo and to the APCD at all
                                            times for continuous injection systems; maintain the feeder setting (on a per
                                            ton of throughput basis) at or above the level established during the
                                            performance test for continuous injection systems in which compliance was
                                            demonstrated.
2. Tunnel or roller kiln equipped with a   a. Maintain the average scrubber liquid pH for each 3-hour block period at or    ............................
 WS.                                        above the average scrubber liquid pH established during the HF/HCl performance
                                            test in which compliance was demonstrated; and
                                           b. Maintain the average scrubber liquid flow rate for each 3-hour block period
                                            at or above the highest average scrubber liquid flow rate established during
                                            the HF/HCl and PM performance tests in which compliance was demonstrated.
3. Tunnel or roller kiln equipped with an  Maintain the 3-hour block average carbon flow rate at or above the highest       ............................
 ACI system.                                average carbon flow rate established during the Hg and dioxin/furan
                                            performance tests in which compliance was demonstrated.
4. Tunnel or roller kiln intending to      Maintain the average operating temperature for each 12-hour block period at or   ............................
 comply with dioxin/furan emission limit    below the highest operating temperature established during the dioxin/furan
 without an ACI system.                     performance test in which compliance was demonstrated.
5. Tunnel or roller kiln with no add-on    a. Maintain no VE from the stack; and                                            i. Maintain your kiln
 control.                                  b. Maintain the kiln process rate at or below the kiln process rate determined    temperature profile.
                                            according to Sec.   63.8595(g)(1) if your total facility maximum potential HCl-
                                            equivalent emissions are greater than the HCl-equivalent limit in Table 1 to
                                            this subpart; and
                                           c. Maintain the average operating temperature for each 12-hour block period at   ............................
                                            or below the highest operating temperature established during the dioxin/furan
                                            performance test in which compliance was demonstrated.
6. Glaze spray operation equipped with a   a. If you use a bag leak detection system, initiate corrective action within 1   i. Maintain no VE from the
 FF.                                        hour of a bag leak detection system alarm and complete corrective actions in     FF stack.
                                            accordance with your OM&M plan; operate and maintain the fabric filter such
                                            that the alarm is not engaged for more than 5 percent of the total operating
                                            time in a 6-month block reporting period.
7. Glaze spray operation equipped with a   a. Maintain the average scrubber pressure drop for each 3-hour block period at
 WS.                                        or above the average pressure drop established during the PM performance test
                                            in which compliance was demonstrated; and
                                           b. Maintain the average scrubber liquid flow rate for each 3-hour block period   ............................
                                            at or above the average scrubber liquid flow rate established during the PM
                                            performance test in which compliance was demonstrated.
8. Glaze spray operation equipped with a   a. Conduct daily inspections to verify the presence of water flow to the wet     ............................
 water curtain.                             control system; and
                                           b. Conduct annual inspections of the interior of the control equipment (if
                                            applicable) to determine the structural integrity and condition of the control
                                            equipment.
9. Glaze spray operation equipped with     Conduct an annual visual inspection of the baffles to confirm the baffles are    ............................
 baffles.                                   in place.
10. Spray dryer..........................  Maintain the average operating temperature for each 4-hour block period at or    ............................
                                            above the average temperature established during the dioxin/furan performance
                                            test in which compliance was demonstrated.
11. Floor tile press dryer...............  Maintain the average operating temperature for each 4-hour block period at or    ............................
                                            below the average temperature established during the dioxin/furan performance
                                            test in which compliance was demonstrated.
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10. Table 4 to subpart KKKKK is revised to read as follows:

Table 4 to Subpart KKKKK of Part 63--Requirements for Performance Tests

    As stated in Sec.  63.8595, you must conduct each performance test 
in the following table that applies to you:

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11. Table 6 to subpart KKKKK is revised to read as follows:

Table 6 to Subpart KKKKK of Part 63--Initial Compliance With Emission 
Limitations and Work Practice Standards

    As stated in Sec.  63.8605, you must demonstrate initial compliance 
with each emission limitation and work practice standard that applies 
to you according to the following table:

------------------------------------------------------------------------
                                                   You have demonstrated
        For each . . .          For the following  initial compliance if
                                      . . .                . . .
------------------------------------------------------------------------
1. Collection of all tunnel or  a. HF, HCl, and    i. You measure HF and
 roller kilns at the facility.   Cl2 emissions      HCl emissions for
                                 must not exceed    each kiln using
                                 62 kg/hr (140 lb/  Method 26 or 26A of
                                 hr) HCl            40 CFR part 60,
                                 equivalent.        appendix A-8 or its
                                                    alternative, ASTM
                                                    D6735-01 (Reapproved
                                                    2009) (incorporated
                                                    by reference, see
                                                    Sec.   63.14); or
                                                    Method 320 of
                                                    appendix A of this
                                                    part or its
                                                    alternative, ASTM
                                                    D6348-03 (Reapproved
                                                    2010) (incorporated
                                                    by reference, see
                                                    Sec.   63.14); and
                                                   ii. You calculate the
                                                    HCl-equivalent
                                                    emissions for HF for
                                                    each kiln using
                                                    Equation 4 to this
                                                    subpart; and
                                                   iii. You sum the HCl-
                                                    equivalent values
                                                    for all kilns at the
                                                    facility using
                                                    Equation 5 to this
                                                    subpart; and
                                                   iv. The facility
                                                    total HCl-equivalent
                                                    does not exceed 62
                                                    kg/hr (140 lb/hr).
2. Existing floor tile roller   a. PM emissions    i. The PM emissions
 kiln.                           must not exceed    measured using
                                 0.063 kg/Mg        Method 5 of 40 CFR
                                 (0.13 lb/ton) of   part 60, appendix A-
                                 fired product.     3 or Method 29 of 40
                                                    CFR part 60,
                                                    appendix A-8, over
                                                    the period of the
                                                    initial performance
                                                    test, according to
                                                    the calculations in
                                                    Sec.
                                                    63.8595(f)(1), do
                                                    not exceed 0.063 kg/
                                                    Mg (0.13 lb/ton) of
                                                    fired product; and
                                                   ii. You establish and
                                                    have a record of the
                                                    applicable operating
                                                    limits listed in
                                                    Table 2 to this
                                                    subpart over the
                                                    period of the
                                                    initial performance
                                                    test during which PM
                                                    emissions did not
                                                    exceed 0.063 kg/Mg
                                                    (0.13 lb/ton) of
                                                    fired product.
                                b. Hg emissions    i. The Hg emissions
                                 must not exceed    measured using
                                 6.3 E-05 kg/Mg     Method 29 of 40 CFR
                                 (1.3 E-04 lb/      part 60, appendix A-
                                 ton) of fired      8 or its
                                 product.           alternative, ASTM
                                                    D6784-02 (Reapproved
                                                    2008) (incorporated
                                                    by reference, see
                                                    Sec.   63.14), over
                                                    the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    6.3 E-05 kg/Mg (1.3
                                                    E-04 lb/ton) of
                                                    fired product; and

[[Page 42084]]

 
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which Hg
                                                    emissions did not
                                                    exceed 6.3 E-05 kg/
                                                    Mg (1.3 E-04 lb/ton)
                                                    of fired product.
                                c. Dioxin/furan    i. The dioxin/furan
                                 emissions must     emissions measured
                                 not exceed 2.8     using Method 23 of
                                 ng/kg of fired     40 CFR part 60,
                                 product.           appendix A-7, over
                                                    the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    2.8 ng/kg of fired
                                                    product; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which
                                                    dioxin/furan
                                                    emissions did not
                                                    exceed 2.8 ng/kg of
                                                    fired product.
3. Existing wall tile roller    a. PM emissions    i. The PM emissions
 kiln.                           must not exceed    measured using
                                 0.19 kg/Mg (0.37   Method 5 of 40 CFR
                                 lb/ton) of fired   part 60, appendix A-
                                 product.           3 or Method 29 of 40
                                                    CFR part 60,
                                                    appendix A-8, over
                                                    the period of the
                                                    initial performance
                                                    test, according to
                                                    the calculations in
                                                    Sec.
                                                    63.8595(f)(1), do
                                                    not exceed 0.19 kg/
                                                    Mg (0.37 lb/ton) of
                                                    fired product; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which PM
                                                    emissions did not
                                                    exceed 0.19 kg/Mg
                                                    (0.37 lb/ton) of
                                                    fired product.
                                b. Hg emissions    i. The Hg emissions
                                 must not exceed    measured using
                                 1.1 E-04 kg/Mg     Method 29 of 40 CFR
                                 (2.1 E-04 lb/      part 60, appendix A-
                                 ton) of fired      8 or its
                                 product.           alternative, ASTM
                                                    D6784-02 (Reapproved
                                                    2008) (incorporated
                                                    by reference, see
                                                    Sec.   63.14), over
                                                    the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    1.1 E-04 kg/Mg (2.1
                                                    E-04 lb/ton) of
                                                    fired product; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which Hg
                                                    emissions did not
                                                    exceed 1.1 E-04 kg/
                                                    Mg (2.1 E-04 lb/ton)
                                                    of fired product.
                                c. Dioxin/furan    i. The dioxin/furan
                                 emissions must     emissions measured
                                 not exceed 0.22    using Method 23 of
                                 ng/kg of fired     40 CFR part 60,
                                 product.           appendix A-7, over
                                                    the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    0.22 ng/kg of fired
                                                    product; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which
                                                    dioxin/furan
                                                    emissions did not
                                                    exceed 0.22 ng/kg of
                                                    fired product.
4. Existing first-fire          a. PM emissions    i. The PM emissions
 sanitaryware tunnel kiln.       must not exceed    measured using
                                 0.17 kg/Mg (0.34   Method 5 of 40 CFR
                                 lb/ton) of         part 60, appendix A-
                                 greenware fired.   3 or Method 29 of 40
                                                    CFR part 60,
                                                    appendix A-8, over
                                                    the period of the
                                                    initial performance
                                                    test, according to
                                                    the calculations in
                                                    Sec.
                                                    63.8595(f)(1), do
                                                    not exceed 0.17 kg/
                                                    Mg (0.34 lb/ton) of
                                                    greenware fired; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which PM
                                                    emissions did not
                                                    exceed 0.17 kg/Mg
                                                    (0.34 lb/ton) of
                                                    greenware fired.
                                b. Hg emissions    i. The Hg emissions
                                 must not exceed    measured using
                                 1.3 E-04 kg/Mg     Method 29 of 40 CFR
                                 (2.6 E-04 lb/      part 60, appendix A-
                                 ton) of            8 or its
                                 greenware fired.   alternative, ASTM
                                                    D6784-02 (Reapproved
                                                    2008) (incorporated
                                                    by reference, see
                                                    Sec.   63.14), over
                                                    the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    1.3 E-04 kg/Mg (2.6
                                                    E-04 lb/ton) of
                                                    greenware fired; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which Hg
                                                    emissions did not
                                                    exceed 1.3 E-04 kg/
                                                    Mg (2.6 E-04 lb/ton)
                                                    of greenware fired.
                                c. Dioxin/furan    i. The dioxin/furan
                                 emissions must     emissions measured
                                 not exceed 3.3     using Method 23 of
                                 ng/kg of           40 CFR part 60,
                                 greenware fired.   appendix A-7, over
                                                    the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    3.3 ng/kg of
                                                    greenware fired; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which
                                                    dioxin/furan
                                                    emissions did not
                                                    exceed 3.3 ng/kg of
                                                    greenware fired.
5. Existing tile glaze line     a. PM emissions    i. The PM emissions
 with glaze spraying.            must not exceed    measured using
                                 0.93 kg/Mg (1.9    Method 5 of 40 CFR
                                 lb/ton) of first-  part 60, appendix A-
                                 fire glaze         3, over the period
                                 sprayed (dry       of the initial
                                 weight basis).     performance test,
                                                    according to the
                                                    calculations in Sec.
                                                      63.8595(f)(2), do
                                                    not exceed 0.93 kg/
                                                    Mg (1.9 lb/ton) of
                                                    first-fire glaze
                                                    sprayed (dry weight
                                                    basis); and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which PM
                                                    emissions did not
                                                    exceed 0.93 kg/Mg
                                                    (1.9 lb/ton) of
                                                    first-fire glaze
                                                    sprayed (dry weight
                                                    basis).
                                b. Hg emissions    i. The Hg emissions
                                 must not exceed    measured using
                                 8.0 E-05 kg/Mg     Method 29 of 40 CFR
                                 (1.6 E-04 lb/      part 60, appendix A-
                                 ton) of first-     8 or its
                                 fire glaze         alternative, ASTM
                                 sprayed (dry       D6784-02 (Reapproved
                                 weight basis).     2008) (incorporated
                                                    by reference, see
                                                    Sec.   63.14), over
                                                    the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    8.0 E-05 kg/Mg (1.6
                                                    E-04 lb/ton) of
                                                    first-fire glaze
                                                    sprayed (dry weight
                                                    basis); and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which Hg
                                                    emissions did not
                                                    exceed 8.0 E-05 kg/
                                                    Mg (1.6 E-04 lb/ton)
                                                    of first-fire glaze
                                                    sprayed (dry weight
                                                    basis).
6. Existing sanitaryware        a. PM emissions    i. The PM emissions
 manual glaze application.       must not exceed    measured using
                                 18 kg/Mg (35 lb/   Method 5 of 40 CFR
                                 ton) of first-     part 60, appendix A-
                                 fire glaze         3, over the period
                                 sprayed (dry       of the initial
                                 weight basis).     performance test,
                                                    according to the
                                                    calculations in Sec.
                                                      63.8595(f)(2), do
                                                    not exceed 18 kg/Mg
                                                    (35 lb/ton) of first-
                                                    fire glaze sprayed
                                                    (dry weight basis);
                                                    and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which PM
                                                    emissions did not
                                                    exceed 18 kg/Mg (35
                                                    lb/ton) of first-
                                                    fire glaze sprayed
                                                    (dry weight basis).
7. Existing sanitaryware spray  a. PM emissions    i. The PM emissions
 machine glaze application.      must not exceed    measured using
                                 6.2 kg/Mg (13 lb/  Method 5 of 40 CFR
                                 ton) of first-     part 60, appendix A-
                                 fire glaze         3, over the period
                                 sprayed (dry       of the initial
                                 weight basis).     performance test,
                                                    according to the
                                                    calculations in Sec.
                                                      63.8595(f)(2), do
                                                    not exceed 6.2 kg/Mg
                                                    (13 lb/ton) of first-
                                                    fire glaze sprayed
                                                    (dry weight basis);
                                                    and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which PM
                                                    emissions did not
                                                    exceed 6.2 kg/Mg (13
                                                    lb/ton) of first-
                                                    fire glaze sprayed
                                                    (dry weight basis).

[[Page 42085]]

 
8. Existing sanitaryware robot  a. PM emissions    i. The PM emissions
 glaze application.              must not exceed    measured using
                                 4.5 kg/Mg (8.9     Method 5 of 40 CFR
                                 lb/ton) of first-  part 60, appendix A-
                                 fire glaze         3, over the period
                                 sprayed (dry       of the initial
                                 weight basis).     performance test,
                                                    according to the
                                                    calculations in Sec.
                                                      63.8595(f)(2), do
                                                    not exceed 4.5 kg/Mg
                                                    (8.9 lb/ton) of
                                                    first-fire glaze
                                                    sprayed (dry weight
                                                    basis); and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which PM
                                                    emissions did not
                                                    exceed 4.5 kg/Mg
                                                    (8.9 lb/ton) of
                                                    first-fire glaze
                                                    sprayed (dry weight
                                                    basis).
9. Existing floor tile spray    a. Dioxin/furan    i. The dioxin/furan
 dryer.                          emissions must     emissions measured
                                 not exceed 19 ng/  using Method 23 of
                                 kg of throughput   40 CFR part 60,
                                 processed.         appendix A-7, over
                                                    the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    19 ng/kg of
                                                    throughput
                                                    processed; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which
                                                    dioxin/furan
                                                    emissions did not
                                                    exceed 19 ng/kg of
                                                    throughput
                                                    processed.
10. Existing wall tile spray    a. Dioxin/furan    i. The dioxin/furan
 dryer.                          emissions must     emissions measured
                                 not exceed 0.058   using Method 23 of
                                 ng/kg of           40 CFR part 60,
                                 throughput         appendix A-7, over
                                 processed.         the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    0.058 ng/kg of
                                                    throughput
                                                    processed; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which
                                                    dioxin/furan
                                                    emissions did not
                                                    exceed 0.058 ng/kg
                                                    of throughput
                                                    processed.
11. Existing floor tile press   a. Dioxin/furan    i. The dioxin/furan
 dryer.                          emissions must     emissions measured
                                 not exceed 0.024   using Method 23 of
                                 ng/kg of           40 CFR part 60,
                                 throughput         appendix A-7, over
                                 processed.         the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    0.024 ng/kg of
                                                    throughput
                                                    processed; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which
                                                    dioxin/furan
                                                    emissions did not
                                                    exceed 0.024 ng/kg
                                                    of throughput
                                                    processed.
12. New or reconstructed floor  a. PM emissions    i. The PM emissions
 tile roller kiln.               must not exceed    measured using
                                 0.019 kg/Mg        Method 5 of 40 CFR
                                 (0.037 lb/ton)     part 60, appendix A-
                                 of fired product.  3 or Method 29 of 40
                                                    CFR part 60,
                                                    appendix A-8, over
                                                    the period of the
                                                    initial performance
                                                    test, according to
                                                    the calculations in
                                                    Sec.
                                                    63.8595(f)(1), do
                                                    not exceed 0.019 kg/
                                                    Mg (0.037 lb/ton) of
                                                    fired product; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which PM
                                                    emissions did not
                                                    exceed 0.019 kg/Mg
                                                    (0.037 lb/ton) of
                                                    fired product.
                                b. Hg emissions    i. The Hg emissions
                                 must not exceed    measured using
                                 2.0 E-05 kg/Mg     Method 29 of 40 CFR
                                 (3.9 E-05 lb/      part 60, appendix A-
                                 ton) of fired      8 or its
                                 product.           alternative, ASTM
                                                    D6784-02 (Reapproved
                                                    2008) (incorporated
                                                    by reference, see
                                                    Sec.   63.14), over
                                                    the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    2.0 E-05 kg/Mg (3.9
                                                    E-05 lb/ton) of
                                                    fired product; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which Hg
                                                    emissions did not
                                                    exceed 2.0 E-05 kg/
                                                    Mg (3.9 E-05 lb/ton)
                                                    of fired product.
                                c. Dioxin/furan    i. The dioxin/furan
                                 emissions must     emissions measured
                                 not exceed 1.3     using Method 23 of
                                 ng/kg of fired     40 CFR part 60,
                                 product.           appendix A-7, over
                                                    the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    1.3 ng/kg of fired
                                                    product; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which
                                                    dioxin/furan
                                                    emissions did not
                                                    exceed 1.3 ng/kg of
                                                    fired product.
13. New or reconstructed wall   a. PM emissions    i. The PM emissions
 tile roller kiln.               must not exceed    measured using
                                 0.19 kg/Mg (0.37   Method 5 of 40 CFR
                                 lb/ton) of fired   part 60, appendix A-
                                 product.           3 or Method 29 of 40
                                                    CFR part 60,
                                                    appendix A-8, over
                                                    the period of the
                                                    initial performance
                                                    test, according to
                                                    the calculations in
                                                    Sec.
                                                    63.8595(f)(1), do
                                                    not exceed 0.19 kg/
                                                    Mg (0.37 lb/ton) of
                                                    fired product; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which PM
                                                    emissions did not
                                                    exceed 0.19 kg/Mg
                                                    (0.37 lb/ton) of
                                                    fired product.
                                b. Hg emissions    i. The Hg emissions
                                 must not exceed    measured using
                                 1.1 E-04 kg/Mg     Method 29 of 40 CFR
                                 (2.1 E-04 lb/      part 60, appendix A-
                                 ton) of fired      8 or its
                                 product.           alternative, ASTM
                                                    D6784-02 (Reapproved
                                                    2008) (incorporated
                                                    by reference, see
                                                    Sec.   63.14), over
                                                    the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    1.1 E-04 kg/Mg (2.1
                                                    E-04 lb/ton) of
                                                    fired product; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which Hg
                                                    emissions did not
                                                    exceed 1.1 E-04 kg/
                                                    Mg (2.1 E-04 lb/ton)
                                                    of fired product.
                                c. Dioxin/furan    i. The dioxin/furan
                                 emissions must     emissions measured
                                 not exceed 0.22    using Method 23 of
                                 ng/kg of fired     40 CFR part 60,
                                 product.           appendix A-7, over
                                                    the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    0.22 ng/kg of fired
                                                    product; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which
                                                    dioxin/furan
                                                    emissions did not
                                                    exceed 0.22 ng/kg of
                                                    fired product.
14. New or reconstructed first- a. PM emissions    i. The PM emissions
 fire sanitaryware tunnel kiln.  must not exceed    measured using
                                 0.048 kg/Mg        Method 5 of 40 CFR
                                 (0.095 lb/ton)     part 60, appendix A-
                                 of greenware       3 or Method 29 of 40
                                 fired.             CFR part 60,
                                                    appendix A-8, over
                                                    the period of the
                                                    initial performance
                                                    test, according to
                                                    the calculations in
                                                    Sec.
                                                    63.8595(f)(1), do
                                                    not exceed 0.048 kg/
                                                    Mg (0.095 lb/ton) of
                                                    greenware fired; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which PM
                                                    emissions did not
                                                    exceed 0.048 kg/Mg
                                                    (0.095 lb/ton) of
                                                    greenware fired.
                                b. Hg emissions    i. The Hg emissions
                                 must not exceed    measured using
                                 6.1 E-05 kg/Mg     Method 29 of 40 CFR
                                 (1.3 E-04 lb/      part 60, appendix A-
                                 ton) of            8 or its
                                 greenware fired.   alternative, ASTM
                                                    D6784-02 (Reapproved
                                                    2008) (incorporated
                                                    by reference, see
                                                    Sec.   63.14), over
                                                    the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    6.1 E-05 kg/Mg (1.3
                                                    E-04 lb/ton) of
                                                    greenware fired; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which Hg
                                                    emissions did not
                                                    exceed 6.1 E-05 kg/
                                                    Mg (1.3 E-04 lb/ton)
                                                    of greenware fired.

[[Page 42086]]

 
                                c. Dioxin/furan    i. The dioxin/furan
                                 emissions must     emissions measured
                                 not exceed 0.99    using Method 23 of
                                 ng/kg of           40 CFR part 60,
                                 greenware fired.   appendix A-7, over
                                                    the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    0.99 ng/kg of
                                                    greenware fired; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which
                                                    dioxin/furan
                                                    emissions did not
                                                    exceed 0.99 ng/kg of
                                                    greenware fired.
15. New or reconstructed tile   a. PM emissions    i. The PM emissions
 glaze line with glaze           must not exceed    measured using
 spraying.                       0.31 kg/Mg (0.61   Method 5 of 40 CFR
                                 lb/ton) of first-  part 60, appendix A-
                                 fire glaze         3, over the period
                                 sprayed (dry       of the initial
                                 weight basis).     performance test,
                                                    according to the
                                                    calculations in Sec.
                                                      63.8595(f)(2), do
                                                    not exceed 0.31 kg/
                                                    Mg (0.61 lb/ton) of
                                                    first-fire glaze
                                                    sprayed (dry weight
                                                    basis); and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which PM
                                                    emissions did not
                                                    exceed 0.31 kg/Mg
                                                    (0.61 lb/ton) of
                                                    first-fire glaze
                                                    sprayed (dry weight
                                                    basis).
                                b. Hg emissions    i. The Hg emissions
                                 must not exceed    measured using
                                 8.0 E-05 kg/Mg     Method 29 of 40 CFR
                                 (1.6 E-04 lb/      part 60, appendix A-
                                 ton) of first-     8 or its
                                 fire glaze         alternative, ASTM
                                 sprayed (dry       D6784-02 (Reapproved
                                 weight basis).     2008) (incorporated
                                                    by reference, see
                                                    Sec.   63.14), over
                                                    the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    8.0 E-05 kg/Mg (1.6
                                                    E-04 lb/ton) of
                                                    first-fire glaze
                                                    sprayed (dry weight
                                                    basis); and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which Hg
                                                    emissions did not
                                                    exceed 8.0 E-05 kg/
                                                    Mg (1.6 E-04 lb/ton)
                                                    of first-fire glaze
                                                    sprayed (dry weight
                                                    basis).
16. New or reconstructed        a. PM emissions    i. The PM emissions
 sanitaryware manual glaze       must not exceed    measured using
 application.                    2.0 kg/Mg (3.9     Method 5 of 40 CFR
                                 lb/ton) of first-  part 60, appendix A-
                                 fire glaze         3, over the period
                                 sprayed (dry       of the initial
                                 weight basis).     performance test,
                                                    according to the
                                                    calculations in Sec.
                                                      63.8595(f)(2), do
                                                    not exceed 2.0 kg/Mg
                                                    (3.9 lb/ton) of
                                                    first-fire glaze
                                                    sprayed (dry weight
                                                    basis); and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which PM
                                                    emissions did not
                                                    exceed 2.0 kg/Mg
                                                    (3.9 lb/ton) of
                                                    first-fire glaze
                                                    sprayed (dry weight
                                                    basis).
17. New or reconstructed        a. PM emissions    i. The PM emissions
 sanitaryware spray machine      must not exceed    measured using
 glaze application.              1.6 kg/Mg (3.2     Method 5 of 40 CFR
                                 lb/ton) of first-  part 60, appendix A-
                                 fire glaze         3, over the period
                                 sprayed (dry       of the initial
                                 weight basis).     performance test,
                                                    according to the
                                                    calculations in Sec.
                                                      63.8595(f)(2), do
                                                    not exceed 1.6 kg/Mg
                                                    (3.2 lb/ton) of
                                                    first-fire glaze
                                                    sprayed (dry weight
                                                    basis); and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which PM
                                                    emissions did not
                                                    exceed 1.6 kg/Mg
                                                    (3.2 lb/ton) of
                                                    first-fire glaze
                                                    sprayed (dry weight
                                                    basis).
18. New or reconstructed        a. PM emissions    i. The PM emissions
 sanitaryware robot glaze        must not exceed    measured using
 application.                    1.2 kg/Mg (2.3     Method 5 of 40 CFR
                                 lb/ton) of first-  part 60, appendix A-
                                 fire glaze         3, over the period
                                 sprayed (dry       of the initial
                                 weight basis).     performance test,
                                                    according to the
                                                    calculations in Sec.
                                                      63.8595(f)(2), do
                                                    not exceed 1.2 kg/Mg
                                                    (2.3 lb/ton) of
                                                    first-fire glaze
                                                    sprayed (dry weight
                                                    basis); and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which PM
                                                    emissions did not
                                                    exceed 1.2 kg/Mg
                                                    (2.3 lb/ton) of
                                                    first-fire glaze
                                                    sprayed (dry weight
                                                    basis).
19. New or reconstructed floor  a. Dioxin/furan    i. The dioxin/furan
 tile spray dryer.               emissions must     emissions measured
                                 not exceed 0.071   using Method 23 of
                                 ng/kg of           40 CFR part 60,
                                 throughput         appendix A-7, over
                                 processed.         the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    0.071 ng/kg of
                                                    throughput
                                                    processed; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which
                                                    dioxin/furan
                                                    emissions did not
                                                    exceed 0.071 ng/kg
                                                    of throughput
                                                    processed.
20. New or reconstructed wall   a. Dioxin/furan    i. The dioxin/furan
 tile spray dryer.               emissions must     emissions measured
                                 not exceed 0.058   using Method 23 of
                                 ng/kg of           40 CFR part 60,
                                 throughput         appendix A-7, over
                                 processed.         the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    0.058 ng/kg of
                                                    throughput
                                                    processed; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which
                                                    dioxin/furan
                                                    emissions did not
                                                    exceed 0.058 ng/kg
                                                    of throughput
                                                    processed.
21. New or reconstructed floor  a. Dioxin/furan    i. The dioxin/furan
 tile press dryer.               emissions must     emissions measured
                                 not exceed 0.024   using Method 23 of
                                 ng/kg of           40 CFR part 60,
                                 throughput         appendix A-7, over
                                 processed.         the period of the
                                                    initial performance
                                                    test, do not exceed
                                                    0.024 ng/kg of
                                                    throughput
                                                    processed; and
                                                   ii. You establish and
                                                    have a record of the
                                                    operating limits
                                                    listed in Table 2 to
                                                    this subpart over
                                                    the period of the
                                                    initial performance
                                                    test during which
                                                    dioxin/furan
                                                    emissions did not
                                                    exceed 0.024 ng/kg
                                                    of throughput
                                                    processed.
22. Existing, new, or           a. Minimize HAP    i. Use natural gas,
 reconstructed sanitaryware      emissions.         or equivalent, as
 shuttle kiln.                                      the kiln fuel; and
                                                   ii. Develop a
                                                    designed firing time
                                                    and temperature
                                                    cycle for the
                                                    sanitaryware shuttle
                                                    kiln. You must
                                                    either program the
                                                    time and temperature
                                                    cycle into your kiln
                                                    or track each step
                                                    on a log sheet; and
                                                   iii. Label each
                                                    sanitaryware shuttle
                                                    kiln with the
                                                    maximum load (in
                                                    tons) of greenware
                                                    that can be fired in
                                                    the kiln during a
                                                    single firing cycle;
                                                    and
                                                   iv. Develop
                                                    maintenance
                                                    procedures for each
                                                    kiln that, at a
                                                    minimum, specify the
                                                    frequency of
                                                    inspection and
                                                    maintenance of
                                                    temperature
                                                    monitoring devices,
                                                    controls that
                                                    regulate air-to-fuel
                                                    ratios, and controls
                                                    that regulate firing
                                                    cycles.
------------------------------------------------------------------------


[[Page 42087]]

0
12. Table 7 to subpart KKKKK is revised to read as follows:

Table 7 to Subpart KKKKK of Part 63--Continuous Compliance With 
Emission Limitations and Work Practice Standards

    As stated in Sec.  63.8620, you must demonstrate continuous 
compliance with each emission limitation and work practice standard 
that applies to you according to the following table:

----------------------------------------------------------------------------------------------------------------
                                  For the following    You must demonstrate continuous
         For each . . .                 . . .                compliance by . . .                 Or by . .
----------------------------------------------------------------------------------------------------------------
1. Tunnel or roller kiln         a. Each emission    i. If you use a bag leak detection   (1) Performing VE
 equipped with a DIFF or DLS/FF.  limit in Table 1    system, as prescribed in             observations of the
                                  to this subpart     63.8450(e), initiating corrective    DIFF or DLS/FF stack
                                  and each            action within 1 hour of a bag leak   at the frequency
                                  operating limit     detection system alarm and           specified in Sec.
                                  in Item 1 of        completing corrective actions in     63.8620(e) using
                                  Table 2 to this     accordance with your OM&M plan;      Method 22 of 40 CFR
                                  subpart for kilns   operating and maintaining the        part 60, appendix A-
                                  equipped with       fabric filter such that the alarm    7; and maintaining no
                                  DIFF or DLS/FF.     is not engaged for more than 5       VE from the DIFF or
                                                      percent of the total operating       DLS/FF stack; or
                                                      time in a 6-month block reporting   (2) Maintaining your
                                                      period; in calculating this          kiln temperature
                                                      operating time fraction, if          profile; for any
                                                      inspection of the fabric filter      incidence where the
                                                      demonstrates that no corrective      kiln is out of
                                                      action is required, no alarm time    control (i.e.,
                                                      is counted; if corrective action     exceeds its
                                                      is required, each alarm is counted   temperature profile),
                                                      as a minimum of 1 hour; if you       performing VE
                                                      take longer than 1 hour to           observations of the
                                                      initiate corrective action, the      DIFF or DLS/FF stack
                                                      alarm time is counted as the         as specified in Sec.
                                                      actual amount of time taken by you    63.8620(e) using
                                                      to initiate corrective action; and   Method 22 of 40 CFR
                                                                                           part 60, appendix A-
                                                                                           7; and observing no
                                                                                           VE from the DIFF or
                                                                                           DLS/FF stack.
                                                     ii. Verifying that lime is free-     ......................
                                                      flowing via a load cell, carrier
                                                      gas/lime flow indicator, carrier
                                                      gas pressure drop measurement
                                                      system, or other system; recording
                                                      all monitor or sensor output, and
                                                      if lime is found not to be free
                                                      flowing, promptly initiating and
                                                      completing corrective actions in
                                                      accordance with your OM&M plan;
                                                      recording the feeder setting once
                                                      each shift of operation to verify
                                                      that the feeder setting is being
                                                      maintained at or above the level
                                                      established during the HF/HCl
                                                      performance test in which
                                                      compliance was demonstrated.
2. Tunnel or roller kiln         a. Each emission    i. Collecting the scrubber liquid    ......................
 equipped with a WS.              limit in Table 1    pH data according to Sec.
                                  to this subpart     63.8600(a); reducing the scrubber
                                  and each            liquid pH data to 3-hour block
                                  operating limit     averages according to Sec.
                                  in Item 2 of        63.8600(a); maintaining the
                                  Table 2 to this     average scrubber liquid pH for
                                  subpart for kilns   each 3-hour block period at or
                                  equipped with WS.   above the average scrubber liquid
                                                      pH established during the HF/HCl
                                                      performance test in which
                                                      compliance was demonstrated; and
                                                     ii. Collecting the scrubber liquid   ......................
                                                      flow rate data according to Sec.
                                                      63.8600(a); reducing the scrubber
                                                      liquid flow rate data to 3-hour
                                                      block averages according to Sec.
                                                      63.8600(a); maintaining the
                                                      average scrubber liquid flow rate
                                                      for each 3-hour block period at or
                                                      above the highest average scrubber
                                                      liquid flow rate established
                                                      during the HF/HCl and PM
                                                      performance tests in which
                                                      compliance was demonstrated.
3. Tunnel or roller kiln         Each emission       Collecting the carbon flow rate      ......................
 equipped with an ACI system.     limit in Table 1    data according to Sec.
                                  to this subpart     63.8600(a); reducing the carbon
                                  and each            flow rate data to 3-hour block
                                  operating limit     averages according to Sec.
                                  in Item 3 of        63.8600(a); maintaining the
                                  Table 2 to this     average carbon flow rate for each
                                  subpart for kilns   3-hour block period at or above
                                  equipped with ACI   the highest average carbon flow
                                  system.             rate established during the Hg and
                                                      dioxin/furan performance tests in
                                                      which compliance was demonstrated.
4. Tunnel or roller kiln         Each emission       Collecting the operating             Collecting the
 intending to comply with         limit in Table 1    temperature data according to Sec.   operating temperature
 dioxin/furan emission limit      to this subpart       63.8600(a); and maintaining the    data according to
 without an ACI system.           and each            operating temperature at or below    Sec.   63.8600(a);
                                  operating limit     the highest operating temperature    reducing the
                                  in Item 4 of        established during the dioxin/       operating temperature
                                  Table 2 to this     furan performance test in which      data to a 12-hour
                                  subpart for kilns   compliance was demonstrated.         block average; and
                                  intending to                                             maintaining the
                                  comply with                                              average operating
                                  dioxin/furan                                             temperature for each
                                  emission limit                                           12-hour block period
                                  without an ACI                                           at or below the
                                  system.                                                  highest operating
                                                                                           temperature
                                                                                           established during
                                                                                           the dioxin/furan
                                                                                           performance test in
                                                                                           which compliance was
                                                                                           demonstrated.
5. Tunnel or roller kiln with    a. Each emission    i. Performing VE observations of     (1) Maintaining your
 no add-on control.               limit in Table 1    the stack at the frequency           kiln temperature
                                  to this subpart     specified in Sec.   63.8620(e)       profile; for any
                                  and each            using Method 22 of 40 CFR part 60,   incidence where the
                                  operating limit     appendix A-7; and maintaining no     kiln is out of
                                  in Item 5 of        VE from the stack; and               control (i.e.,
                                  Table 2 to this                                          exceeds its
                                  subpart for                                              temperature profile),
                                  tunnel or roller                                         performing VE
                                  kilns with no add-                                       observations of the
                                  on control.                                              DIFF or DLS/FF stack
                                                                                           as specified in Sec.
                                                                                            63.8620(e) using
                                                                                           Method 22 of 40 CFR
                                                                                           part 60, appendix A-
                                                                                           7; and observing no
                                                                                           VE from the stack.

[[Page 42088]]

 
                                                     ii. If your last calculated total    ......................
                                                      facility maximum potential HCl-
                                                      equivalent was not at or below the
                                                      health-based standard in Table 1
                                                      to this subpart, collecting the
                                                      kiln process rate data according
                                                      to Sec.   63.8600(a); reducing the
                                                      kiln process rate data to 3-hour
                                                      block averages according to Sec.
                                                      63.8600(a); maintaining the
                                                      average kiln process rate for each
                                                      3-hour block period at or below
                                                      the kiln process rate determined
                                                      according to Sec.   63.8595(g)(1);
                                                      and
                                                     iii. Collecting the operating        (1) Collecting the
                                                      temperature data according to Sec.   operating temperature
                                                        63.8600(a); and maintaining the    data according to
                                                      operating temperature at or below    Sec.   63.8600(a);
                                                      the highest operating temperature    reducing the
                                                      established during the dioxin/       operating temperature
                                                      furan performance test in which      data to a 12-hour
                                                      compliance was demonstrated.         block average; and
                                                                                           maintaining the
                                                                                           average operating
                                                                                           temperature for each
                                                                                           12-hour block period
                                                                                           at or below the
                                                                                           highest operating
                                                                                           temperature
                                                                                           established during
                                                                                           the dioxin/furan
                                                                                           performance test in
                                                                                           which compliance was
                                                                                           demonstrated.
6. Glaze spray operation         Each emission       If you use a bag leak detection      Performing VE
 equipped with a FF.              limit in Table 1    system, initiating corrective        observations of the
                                  to this subpart     action within 1 hour of a bag leak   FF stack at the
                                  and each            detection system alarm and           frequency specified
                                  operating limit     completing corrective actions in     in Sec.   63.8620(e)
                                  in Item 6 of        accordance with your OM&M plan;      using Method 22 of 40
                                  Table 2 to this     operating and maintaining the        CFR part 60, appendix
                                  subpart for glaze   fabric filter such that the alarm    A-7; and maintaining
                                  spray operations    is not engaged for more than 5       no VE from the FF
                                  equipped with a     percent of the total operating       stack.
                                  FF.                 time in a 6-month block reporting
                                                      period; in calculating this
                                                      operating time fraction, if
                                                      inspection of the fabric filter
                                                      demonstrates that no corrective
                                                      action is required, no alarm time
                                                      is counted; if corrective action
                                                      is required, each alarm is counted
                                                      as a minimum of 1 hour; if you
                                                      take longer than 1 hour to
                                                      initiate corrective action, the
                                                      alarm time is counted as the
                                                      actual amount of time taken by you
                                                      to initiate corrective action.
7. Glaze spray operation         a. Each emission    i. Collecting the scrubber pressure  ......................
 equipped with a WS.              limit in Table 1    drop data according to Sec.
                                  to this subpart     63.8600(a); reducing the scrubber
                                  and each            pressure drop data to 3-hour block
                                  operating limit     averages according to Sec.
                                  in Item 7 of        63.8600(a); maintaining the
                                  Table 2 to this     average scrubber pressure drop for
                                  subpart for kilns   each 3-hour block period at or
                                  equipped with WS.   above the average pressure drop
                                                      established during the PM
                                                      performance test in which
                                                      compliance was demonstrated; and
                                                     ii. Collecting the scrubber liquid   ......................
                                                      flow rate data according to Sec.
                                                      63.8600(a); reducing the scrubber
                                                      liquid flow rate data to 3-hour
                                                      block averages according to Sec.
                                                      63.8600(a); maintaining the
                                                      average scrubber liquid flow rate
                                                      for each 3-hour block period at or
                                                      above the average scrubber liquid
                                                      flow rate established during the
                                                      PM performance test in which
                                                      compliance was demonstrated.
8. Glaze spray operation         a. Each emission    i. Conducting daily inspections to   ......................
 equipped with a water curtain.   limit in Table 1    verify the presence of water flow
                                  to this subpart     to the wet control system; and
                                  and each           ii. Conducting annual inspections
                                  operating limit     of the interior of the control
                                  in Item 8 of        equipment (if applicable) to
                                  Table 2 to this     determine the structural integrity
                                  subpart for kilns   and condition of the control
                                  equipped with a     equipment.
                                  water curtain.
9. Glaze spray operation         Each emission       Conducting an annual visual          ......................
 equipped with baffles.           limit in Table 1    inspection of the baffles to
                                  to this subpart     confirm the baffles are in place.
                                  and each
                                  operating limit
                                  in Item 9 of
                                  Table 2 to this
                                  subpart for kilns
                                  equipped with
                                  baffles.
10. Spray dryer................  Each emission       Collecting the operating             ......................
                                  limit in Table 1    temperature data according to Sec.
                                  to this subpart       63.8600(a); reducing the
                                  and each            operating temperature data to 4-
                                  operating limit     hour block averages according to
                                  in Item 10 of       Sec.   63.8600(a); maintaining the
                                  Table 2 to this     average operating temperature for
                                  subpart for spray   each 4-hour block period at or
                                  dryers.             above the average operating
                                                      temperature established during the
                                                      dioxin/furan performance test in
                                                      which compliance was demonstrated.
11. Floor tile press dryer.....  Each emission       Collecting the operating             ......................
                                  limit in Table 1    temperature data according to Sec.
                                  to this subpart       63.8600(a); reducing the
                                  and each            operating temperature data to 4-
                                  operating limit     hour block averages according to
                                  in Item 11 of       Sec.   63.8600(a); maintaining the
                                  Table 2 to this     average operating temperature for
                                  subpart for floor   each 4-hour block period at or
                                  tile press dryers.  below the average operating
                                                      temperature established during the
                                                      dioxin/furan performance test in
                                                      which compliance was demonstrated.

[[Page 42089]]

 
12. Sanitaryware shuttle kiln..  a. Minimize HAP     i. Maintaining records documenting   ......................
                                  emissions.          your use of natural gas, or an
                                                      equivalent fuel, as the kiln fuel
                                                      at all times except during periods
                                                      of natural gas curtailment or
                                                      supply interruption; and
                                                     ii. If you intend to use an          ......................
                                                      alternative fuel, submitting a
                                                      notification of alternative fuel
                                                      use within 48 hours of the
                                                      declaration of a period of natural
                                                      gas curtailment or supply
                                                      interruption, as defined in Sec.
                                                      63.8665; and
                                                     iii. Submitting a report of          ......................
                                                      alternative fuel use within 10
                                                      working days after terminating the
                                                      use of the alternative fuel, as
                                                      specified in Sec.   63.8635(g);
                                                      and
                                                     iv. Using a designed firing time     ......................
                                                      and temperature cycle for each
                                                      sanitaryware shuttle kiln; and
                                                     v. For each firing load,             ......................
                                                      documenting the total tonnage of
                                                      greenware placed in the kiln to
                                                      ensure that it is not greater than
                                                      the maximum load identified in
                                                      Item 1.a.iii of Table 3 to this
                                                      subpart; and
                                                     vi. Following maintenance            ......................
                                                      procedures for each kiln that, at
                                                      a minimum, specify the frequency
                                                      of inspection and maintenance of
                                                      temperature monitoring devices,
                                                      controls that regulate air-to-fuel
                                                      ratios, and controls that regulate
                                                      firing cycles; and
                                                     vii. Developing and maintaining      ......................
                                                      records for each sanitaryware
                                                      shuttle kiln, as specified in Sec.
                                                        63.8640.
----------------------------------------------------------------------------------------------------------------

[FR Doc. 2018-17933 Filed 8-17-18; 8:45 am]
 BILLING CODE 6560-50-P


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