81_FR_71862 81 FR 71661 - National Emission Standards for Hazardous Air Pollutant Emissions: Petroleum Refinery Sector

81 FR 71661 - National Emission Standards for Hazardous Air Pollutant Emissions: Petroleum Refinery Sector

ENVIRONMENTAL PROTECTION AGENCY

Federal Register Volume 81, Issue 201 (October 18, 2016)

Page Range71661-71667
FR Document2016-25162

On December 1, 2015, the Environmental Protection Agency (EPA) finalized amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) Refinery Maximum Achievable Control Technology (MACT) 1 and Refinery MACT 2 regulations and the New Source Performance Standards (NSPS) for petroleum refineries. Subsequently, the EPA received three petitions for reconsideration of the final rules. The EPA is announcing reconsideration and request for public comment on five issues raised in the petitions for reconsideration where petitioners claim that the public was not afforded an opportunity to comment. Additionally, the EPA is proposing amendments to the final rule to clarify a compliance issue raised by stakeholders subject to the final rule and to correct a referencing error. The EPA is seeking comment only on the five identified petition issues and on the proposed compliance issue clarification and referencing error amendments. The EPA will not respond to comments addressing any other issues or any other provisions of the final rule.

Federal Register, Volume 81 Issue 201 (Tuesday, October 18, 2016)
[Federal Register Volume 81, Number 201 (Tuesday, October 18, 2016)]
[Proposed Rules]
[Pages 71661-71667]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-25162]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 63

[EPA-HQ-OAR-2010-0682; FRL-9954-25-OAR]
RIN 2060-AT18


National Emission Standards for Hazardous Air Pollutant 
Emissions: Petroleum Refinery Sector

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: On December 1, 2015, the Environmental Protection Agency (EPA) 
finalized amendments to the National Emission Standards for Hazardous 
Air Pollutants (NESHAP) Refinery Maximum Achievable Control Technology 
(MACT) 1 and Refinery MACT 2 regulations and the New Source Performance 
Standards (NSPS) for petroleum refineries. Subsequently, the EPA 
received three petitions for reconsideration of the final rules. The 
EPA is announcing reconsideration and request for public comment on 
five issues raised in the petitions for reconsideration where 
petitioners claim that the public was not afforded an opportunity to 
comment. Additionally, the EPA is proposing amendments to the final 
rule to clarify a compliance issue raised by stakeholders subject to 
the final rule and to correct a referencing error. The EPA is seeking 
comment only on the five identified petition issues and on the proposed 
compliance issue clarification and referencing error amendments. The 
EPA will not respond to comments addressing any other issues or any 
other provisions of the final rule.

DATES: Comments must be received on or before December 2, 2016.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-HQ-
OAR-2010-0682, at http://www.regulations.gov. Follow the online 
instructions for submitting comments. Once submitted, comments cannot 
be edited or removed from Regulations.gov. The EPA may publish any 
comment received to its public docket. Do not submit electronically any 
information you consider to be Confidential Business Information (CBI) 
or other information whose disclosure is restricted by statute. 
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 
is seeking comment only on the issues specifically identified in this 
notice. The EPA will not respond to any comments addressing other 
aspects of the final rules or any other related rulemakings. 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 http://www2.epa.gov/dockets/commenting-epa-dockets.
    Instructions. Direct your comments to Docket ID No. EPA-HQ-OAR-
2010-0682. The EPA's policy is that all comments received will be 
included in the public docket without change, and will be made 
available online at http://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 http://www.regulations.gov or email. Send 
or deliver information identified as CBI only to the following address: 
OAQPS Document Control Officer (C404-02), Office of Air Quality 
Planning and Standards, U.S. EPA, Research Triangle Park, North 
Carolina 27711, Attention Docket ID No. EPA-HQ-OAR-2010-0682. Clearly 
mark the part or all of the information that you claim to be CBI. For 
CBI information on a disk or CD-ROM that you mail to the EPA, mark the 
outside of the disk or CD-ROM as CBI and then identify electronically 
within the disk or CD-ROM the specific information you claim as CBI. In 
addition to one complete version of the comment that includes 
information claimed as CBI, you must submit a copy of the comment that 
does not contain the information claimed as CBI for inclusion in the 
public docket. Information so marked will not be disclosed except in 
accordance with procedures set forth in 40 CFR part 2.
    The http://www.regulations.gov Web site is an ``anonymous access'' 
system, 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 http://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 disk or 
CD-ROM 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.
    Docket. All documents in the docket are listed in the 
regulations.gov index. Although listed in the index, some information 
is not publicly available, e.g., CBI or other information whose 
disclosure is restricted by statute. Certain other material, such as 
copyrighted material, 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, EPA WJC West Building, Room 3334, 
1301 Constitution Ave. NW., Washington, DC. The Public Reading Room is 
open from 8:30 a.m. to 4:30 p.m., Monday through Friday, excluding 
legal holidays. The telephone number for the Public Reading Room is 
(202) 566-1744, and the telephone number for the EPA Docket Center is 
(202) 566-1742. Visit the EPA Docket Center homepage at http://www.epa.gov/epahome/dockets.htm for additional

[[Page 71662]]

information about the EPA's public docket.
    Public hearing. A public hearing will be held if requested by 
October 24, 2016 to accept oral comments on this proposed action. The 
hearing will be held, if requested, on November 2, 2016 at the EPA's 
North Carolina Campus located at 109 T.W. Alexander Drive, Research 
Triangle Park, NC 27711. The hearing, if requested, will begin at 9:00 
a.m. (local time) and will conclude at 1:00 p.m. (local time). To 
request a hearing, to register to speak at a hearing, or to inquire if 
a hearing will be held, please contact Ms. Virginia Hunt at (919) 541-
0832 or by email at [email protected]. The last day to pre-register 
to speak at a hearing, if one is held, will be October 31, 2016. 
Additionally, requests to speak will be taken the day of the hearing at 
the hearing registration desk, although preferences on speaking times 
may not be able to be fulfilled. Please note that registration requests 
received before the hearing will be confirmed by the EPA via email.
    Please note that any updates made to any aspect of the hearing, 
including whether or not a hearing will be held, will be posted online 
at https://www.epa.gov/stationary-sources-air-pollution/petroleum-refinery-sector-risk-and-technology-review-and-new-source. We ask that 
you contact Ms. Virginia Hunt at (919) 541-0832 or by email at 
[email protected] or monitor our Web site to determine if a hearing 
will be held. The EPA does not intend to publish a notice in the 
Federal Register announcing any such updates.

FOR FURTHER INFORMATION CONTACT: For questions about this proposed 
action, contact Ms. Brenda Shine, Sector Policies and Programs 
Division, Refining and Chemicals Group (E143-01), Office of Air Quality 
Planning and Standards, U.S. Environmental Protection Agency, Research 
Triangle Park, North Carolina, 27711; telephone number: (919) 541-3608; 
fax number: (919) 541-0246; and email address: [email protected]. 
For information about the applicability of the NESHAP to a particular 
entity, contact Ms. Maria Malave, Office of Enforcement and Compliance 
Assurance, U.S. Environmental Protection Agency, EPA WJC South 
Building, 1200 Pennsylvania Ave. NW., Washington, DC 20460; telephone 
number: (202) 564-7027; fax number: (202) 564-0050; and email address: 
[email protected].

SUPPLEMENTARY INFORMATION: 
    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:

CAA Clean Air Act
CBI confidential business information
CFR Code of Federal Regulations
DCU delayed coking unit
EPA Environmental Protection Agency
FCCU fluid catalytic cracking unit
HAP hazardous air pollutants
lbs/day pounds per day
LEL lower explosive limit
MACT Maximum Achievable Control Technology
MIR maximum individual risk
MPV miscellaneous process vent
NESHAP National Emissions Standards for Hazardous Air Pollutants
NSPS New Source Performance Standards
NTTAA National Technology Transfer and Advancement Act
OAQPS Office of Air Quality Planning and Standards
OECA Office of Enforcement and Compliance Assurance
OMB Office of Management and Budget
OSHA Occupational Safety and Health Administration
PRA Paperwork Reduction Act
PRD Pressure Relief Devices
psig pounds per square inch gauge
PSM Process Safety Management
PTE potential to emit
RC/CA root cause analysis and corrective action
RFA Regulatory Flexibility Act
RMP Risk Management Plan
RTR residual risk and technology review
SRU sulfur recovery unit
SSM startup, shutdown and malfunction
STP standard temperature and pressure
TTN Technology Transfer Network
UMRA Unfunded Mandates Reform Act
VOC volatile organic compounds
[deg]F degrees Fahrenheit

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

I. General Information
    A. What is the source of authority for the reconsideration 
action?
    B. Does this action apply to me?
    C. Where can I get a copy of this document and other related 
information?
II. Background
III. Reconsideration Issues and Request for Public Comments
    A. Work Practice Standards for PRDs
    B. Work Practice Standards for Emergency Flaring
    C. Assessment of Risk From the Refinery Source Categories After 
Implementation of the PRD and Emergency Flaring Work Practice 
Standards
    D. Alternative Work Practice Standards for DCUs Employing the 
Water Overflow Design
    E. Reduced Frequency of Fenceline Monitoring
IV. Proposed Technical Clarifications
V. Statutory and Executive Order Reviews
    A. Executive Orders 12866: Regulatory Planning and Review and 
Executive Order 13563: Improving Regulation and Regulatory Review
    B. Paperwork Reduction Act (PRA)
    C. Regulatory Flexibility Act (RFA)
    D. Unfunded Mandates Reform Act (UMRA)
    E. Executive Order 13132: Federalism
    F. Executive Order 13175: Consultation and Coordination With 
Indian Tribal Governments
    G. Executive Order 13045: Protection of Children From 
Environmental Health Risks and Safety Risks
    H. Executive Order 13211: Actions Concerning Regulations That 
Significantly Affect Energy Supply, Distribution, or Use
    I. National Technology Transfer and Advancement Act (NTTAA)
    J. Executive Order 12898: Federal Actions To Address 
Environmental Justice in Minority Populations and Low-Income 
Populations

I. General Information

A. What is the source of authority for the reconsideration action?

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

B. Does this action apply to me?

    Regulated Entities. Categories and entities potentially regulated 
by this action are shown in Table 1 of this preamble.

   Table 1--Industrial Source Categories Affected by This Final Action
------------------------------------------------------------------------
                                                              NAICS \a\
                NESHAP and source category                      code
------------------------------------------------------------------------
Petroleum Refining Industry...............................       324110
------------------------------------------------------------------------
\a\ North American Industry Classification System.

    Table 1 of this preamble is not intended to be exhaustive, but 
rather to provide a guide for readers regarding entities likely to be 
affected by this action for the source categories listed. To determine 
whether your facility is affected, you should examine the applicability 
criteria in the appropriate NESHAP. If you have any questions regarding 
the applicability of any aspect of these NESHAP, please contact the 
appropriate person listed in the preceding FOR FURTHER INFORMATION 
CONTACT section of this preamble.

C. 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 proposal will also be available on the

[[Page 71663]]

Internet through the Technology Transfer Network (TTN) Web site, a 
forum for information and technology exchange in various areas of air 
pollution control. 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/petroleum-refinery-sector-risk-and-technology-review-and-new-source. Following publication in the Federal 
Register, the EPA will post the Federal Register version and key 
technical documents at this Web site.

II. Background

    On June 30, 2014, the EPA published a proposed rule in the Federal 
Register addressing the risk and technology review (RTR) for the 
Petroleum Refinery NESHAP, 40 CFR part 63, subparts CC (Refinery MACT 
1) and UUU (Refinery MACT 2). On December 1, 2015 (80 FR 75178), after 
receiving and addressing public comments, the EPA finalized 
determinations pursuant to CAA section 112(d)(6) and (f)(2) for the 
Petroleum Refinery source categories and amended Refinery MACT 1 and 2 
based on those determinations. The final December 2015 action included 
a determination that the remaining risk after promulgation of the 
revised NESHAP are acceptable and provide an ample margin of safety. 
The December 2015 action also finalized changes to Refinery MACT 1 and 
2 pursuant to CAA section 112(d)(2) and (3), notably revising the 
requirements for flares and pressure relief devices (PRD). The December 
2015 action also finalized technical corrections and clarifications to 
Refinery NSPS subparts J and Ja to address issues raised by the 
American Petroleum Institute (API) in their 2008 petition for 
reconsideration of the final NSPS Ja rule that had not been previously 
addressed. These include corrections and clarifications to provisions 
for sulfur recovery plants, performance testing, and control device 
operating parameters.
    Following promulgation, the EPA received three separate petitions 
for reconsideration: Two jointly from API and the American Fuel and 
Petrochemical Manufacturers (AFPM) and one from Earthjustice (submitted 
on behalf of Air Alliance Houston, California Communities Against 
Toxics, Clean Air Council, Coalition for a Safe Environment, Del Amo 
Action Committee, Environmental Integrity Project, Sierra Club, Texas 
Environmental Justice Advocacy Services and Utah Physicians for a 
Healthy Environment). The petitions are available for review in the 
rulemaking docket (see Docket ID No. EPA-HQ-OAR-2010-0682).
    On January 19, 2016, API and AFPM requested an administrative 
reconsideration under section 307(d)(7)(B) of the CAA of certain 
provisions of Refinery MACT 1 and 2, as promulgated in the December 
2015 final rule. Specifically, API and AFPM requested that the EPA 
reconsider the maintenance vent provisions in Refinery MACT 1 for 
sources constructed on or before June 30, 2014; the alternate startup, 
shutdown, or hot standby standards for fluid catalytic cracking units 
(FCCU) constructed on or before June 30, 2014, in Refinery MACT 2; the 
alternate startup and shutdown for sulfur recovery units (SRU) 
constructed on or before June 30, 2014, in Refinery MACT 2; and the new 
catalytic reforming units (CRU) purging limitations in Refinery MACT 2. 
The request pertained to providing and/or clarifying the compliance 
time for these sources. In response to this request and additional 
information received relative to providing additional compliance time 
for these provisions, the EPA issued a proposal on February 9, 2016 (81 
FR 6814). A final rule was published on July 13, 2016 (81 FR 45232, 
July 13, 2016), fully responding to the January 19, 2016, initial 
petition for reconsideration submitted by API and AFPM.
    On February 1, 2016, Earthjustice filed a petition for 
reconsideration of several aspects of the December 1, 2015, final rule, 
and on that same day API and AFPM submitted a supplemental petition for 
reconsideration, identifying additional issues on which they sought 
reconsideration. In these petitions, both Earthjustice and API/AFPM 
requested that the EPA reconsider certain aspects of the December 2015 
revisions to Refinery MACT 1 and 2, noting that CAA section 
307(d)(7)(B) authorizes the EPA to reconsider a rule where it is 
impracticable to raise an objection during the period for public 
comment (but within the time specified for judicial review) or if the 
grounds for such an objection arose after the close of the public 
comment period. In particular, Earthjustice claimed that several 
aspects of the revisions to Refinery MACT 1 were not proposed, and, 
thus they were precluded from commenting on them during the public 
comment period: (1) Work practice standards for PRDs and flares; (2) 
alternative water overflow provisions for delayed coking units (DCU); 
(3) reduced monitoring provisions for fenceline monitoring; and (4) 
adjustments to the risk assessment to account for these new work 
practice standards. The API/AFPM petition outlined a number of specific 
issues related to the work practice standards for PRDs and flares, and 
the alternative water overflow provisions for DCUs, as well as a number 
of other specific issues on other aspects of the rule. On June 16, 
2016, the EPA granted the petitions for reconsideration from 
Earthjustice and API/AFPM on the petitioners' claims as they relate to 
the following aspects of the December 2015 revisions to the final rule 
to provide an opportunity for public notice and comment: (1) The work 
practice standards for PRDs; (2) the work practice standards for 
emergency flaring events; (3) the assessment of risk as modified based 
on implementation of these PRD and emergency flaring work practice 
standards; (4) the alternative work practice standards for DCUs 
employing the water overflow design; and (5) the provision allowing 
refineries to reduce the frequency of fenceline monitoring at sampling 
stations that consistently record benzene concentrations below 0.9 
micrograms per cubic meter.

III. Reconsideration Issues and Request for Public Comment

    After reviewing the two February 1, 2016, petitions for 
reconsideration as described above, we granted reconsideration to 
provide the public an opportunity to comment on selected provisions of 
the December 2015 amendments and the assessment of risk as modified to 
account for the implementation of the PRD and emergency flaring work 
practice standards included in the December 2015 final rule. To ensure 
public participation in its final decisions, the Agency is requesting 
public comment on these issues as described below. The EPA is seeking 
comment only on these five specific issues. The EPA will not respond to 
any comments addressing any other provisions of the December 1, 2015, 
final Refinery Sector Rule or any other rule or issues.

A. Work Practice Standard for PRDs

    In the proposed rule (79 FR 36970, June 30, 2014), EPA proposed to 
revise Refinery MACT 1 to establish operating and pressure release 
requirements that apply to all PRDs and to prohibit atmospheric 
releases of hazardous air pollutants (HAP) from PRDs. To ensure 
compliance, we proposed to require that sources monitor PRDs using a 
system that is capable of recording the time and duration of each 
pressure release and notifying operators that a pressure release has 
occurred. Many commenters suggested that a prohibition on atmospheric 
PRD releases was not

[[Page 71664]]

indicative of the best performing facilities, was unachievable and/or 
very costly, and would have negative environmental impacts due to 
additional flares that would need to be installed and operated in 
standby mode to accept the PRD releases. Some commenters suggested that 
we should instead consider the rules on PRDs that apply to refineries 
in the South Coast Air Quality Management District (SCAQMD) and the Bay 
Area Air Quality Management District (BAAQMD).
    Based on these comments, we evaluated the two California district 
rules and determined that 8 percent (or 12 refineries) are subject to 
these requirements, which was a sufficient number of subject refineries 
to establish work practice standards that represent the emissions 
limitation achieved in practice by the best performers. The two rules 
are similar in that they both establish comprehensive regulatory 
programs to address the group or system of PRDs at refineries by 
requiring monitoring, root cause analysis, and corrective action, and 
by focusing on PRDs with the greatest emissions potential through a 
combination of applicability thresholds (albeit with differing 
thresholds between the two rules). In addition, both rules exclude 
emissions from certain types of PRDs--typically lower-release potential 
PRDs, liquid-type PRDs, or in the case of SCAAMD PRDs resulting from 
events outside of the refinery's control. We considered the two rules 
as the basis for determining the best performers for establishing the 
work practice standard that is included in the December 2015 final 
Refinery Sector Rule (see 40 CFR 63.648(j)(3)). In doing so, similar to 
these two rules, we established a work practice standard that is a 
comprehensive set of requirements that apply to the group of PRDs at 
refineries, and that focuses on reducing the size and frequency of 
atmospheric releases of HAP from PRDs, with an emphasis on prevention, 
monitoring, correction, and limitations on the frequency of release 
events. For further details on our analysis of the SCAQMD and BAAQMD 
rules and our use of those rules to establish a comprehensive work 
practice standard for PRDs that are representative of the best 
performing refineries, refer to the December 1, 2015, notice at 80 FR 
75216 and the memorandum in the docket titled, ``Pressure Relief Device 
Control Option Impacts for Final Refinery Sector Rule, July 30, 2015 
(Docket ID No. EPA-HQ-OAR-2010-0682-0750).
    In the final rule, we established a four-part work practice 
standard in place of the prohibition on release to the atmosphere based 
on what was achieved by the best performers, as represented by the two 
California rules. Consistent with the proposed rule, the first 
component of the work practice standard requires that owners or 
operators monitor PRDs using a system that is capable of recording the 
time and duration of each pressure release and notifying operators that 
a pressure release has occurred. Second, the work practice standard 
requires refinery owners or operators to establish preventative 
measures for each affected PRD to prevent direct release of HAP to the 
atmosphere as a result of pressure release events. Third, in the event 
of an atmospheric release, the work practice standard requires refinery 
owners or operators to conduct a root cause analysis to determine the 
cause of a PRD release event. If the root cause was due to operator 
error or negligence, then the release would be a violation of the work 
practice standard. A second release due to the same root cause for the 
same equipment in a 3-year period would be a violation of the work 
practice standard. A third release in a 3-year period would be a 
violation of the work practice standard, regardless of the root cause. 
Force majeure events, as defined in the final rule, would not count in 
determining whether there has been a second or third event. The fourth 
component of the work practice standard is a requirement for corrective 
action. For any event other than a force majeure event, the owner or 
operator would be required to conduct a corrective action analysis and 
implement the results of the corrective action analysis. Refiners have 
45 days to complete the root cause analysis and implement corrective 
action after the release event. The results of the root cause analysis 
and corrective action are due with the periodic reports on a semi-
annual basis.
    We excluded the following PRDs that have very low potential to emit 
(PTE) based on their type of service, size and pressure from the work 
practice standard: PRDs that only release material that is liquid at 
standard temperature and pressure (STP) and that are hard-piped to a 
controlled drain system, PRDs that do not have a PTE of 72 pounds per 
day (lbs/day) or more of volatile organic compounds (VOC), PRDs with 
design release pressure of less than 2.5 pounds per square inch gauge 
(psig), PRDs on mobile equipment, PRDs in heavy liquid service, and 
PRDs that are designed solely to release due to liquid thermal 
expansion. Although these PRDs are excluded from the work practice 
standard, they are subject to the operating and pressure relief 
requirements in 40 CFR 63.648(j)(1) and (2), which apply to all PRDs.
    We request public comments on the work practice standard for PRDs 
as provided in 40 CFR 63.648(j)(3) and (5) through (7), including the 
number and type of release/event allowances; the type of PRDs covered 
by the work practice standard; and the definition of ``force majeure 
event'' in 40 CFR 63.641. We also request public comments on the 
recordkeeping and reporting requirements associated with the work 
practice standard in 40 CFR 63.655(g)(10)(iii) and (i)(11).

B. Work Practice Standard for Emergency Flaring

    In the June 2014 proposed rule, the EPA proposed to amend the 
operating and monitoring requirements for petroleum refinery flares. As 
discussed in the proposal at 79 FR 36904, we determined that the 
requirements for flares in the General Provisions at 40 CFR 63.18 were 
not adequate to ensure compliance with the Refinery MACT standards. In 
general, flares used as air pollution control devices are expected to 
achieve a 98-percent HAP destruction efficiency. However, because flows 
of waste gases to the flares had diminished based on reductions 
achieved by the increased use of flare gas recovery systems, there were 
times when the waste gas to the flare contained insufficient heat 
content to adequately combust and, thus, a 98-percent HAP destruction 
efficiency was not being achieved. In addition, the practice of 
applying assist media to the flare (particularly steam to prevent 
smoking of the flare tip) had led to a decrease in the combustion 
efficiency of flares.
    To ensure that a 98-percent HAP destruction efficiency was being 
met, as contemplated at the time the MACT standard was promulgated, we 
proposed revisions to Refinery MACT 1 that required flares to operate 
with a continuously-lit pilot flame at all times when gases are sent to 
the flare, with no visible emissions except for periods not to exceed 5 
minutes during any 2 consecutive hours, and to meet flare tip velocity 
limits and combustion zone operating limits at all times when gases are 
flared.
    During the comment period on the proposed rule, we received 
comments that the concern over insufficient heat content of the waste 
gas or over-assisting are less problematic in attaining a high level of 
destruction efficiency at the flare in emergency situations, where the 
flow in the flare

[[Page 71665]]

exceeds the smokeless capacity of the flare. Thus, commenters suggested 
that better combustion was assured closer to the incipient smoke point 
of the flare and that flow velocity limits and limits on visible 
emissions should not apply during flaring events.
    In the final rule, we determined that it was appropriate to set 
different standards for when a flare is operating below its smokeless 
capacity and when it is operating above its smokeless capacity. We 
finalized the proposed requirements (with minor revisions) to apply 
when a flare is operating below its smokeless capacity.
    We established a separate work practice standard that applies when 
a flare exceeds its smokeless capacity. As with flares operating below 
the smokeless capacity, the work practice standard requires the 
refinery to have a continuously-lit pilot flame and meet combustion 
zone operating limits (e.g., heat content in the combustion zone) at 
all times and meet the monitoring, recordkeeping, and reporting 
requirements. These requirements are the most critical in ensuring that 
a 98-percent destruction efficiency is being met. The work practice 
standard also requires owners or operators to develop flare management 
plans to identify the flare system smokeless capacity and flare 
components, waste gas streams that are flared, monitoring systems and 
their locations, procedures that will be followed to limit discharges 
to the flare that cause the flare to exceed its smokeless capacity, and 
prevention measures implemented for PRDs that discharge to the flare 
header. The work practice standard requires refinery owners or 
operators to conduct a specific root cause analysis and take corrective 
action for any flaring event that exceeds the flare's smokeless 
capacity and that also exceeds the flare tip velocity and/or visible 
emissions limit. Refiners have 45 days to complete the root cause 
analysis and implement corrective action after an event. The results of 
the root cause and corrective action are due with the periodic reports 
on a semi-annual basis.
    If the root cause analysis indicates that the exceedance of the 
flare tip velocity and/or the visible emissions limit is caused by 
operator error or poor maintenance, the exceedance is a violation of 
the work practice standard. A second event causing an exceedance of 
either the flare tip velocity or the visible emissions limit within a 
rolling 3-year period from the same root cause on the same equipment is 
a violation of the standard. A third exceedance of the velocity or 
visible emissions limit occurring from the same flare in a rolling 3-
year period is a violation of the work practice standard, regardless of 
the cause. However, force majeure events are excluded from the event 
count. The requirements for a continuously-lit pilot flame, combustion-
zone operating limits and the monitoring, recordkeeping and reporting 
requirements apply at all times (whether the flare is operating below, 
at, or above its smokeless capacity), including during a force majeure 
event.
    In reviewing the regulatory text for this proposed action, we 
determined that 40 CFR 63.670(o)(1)(ii)(B) contains an incorrect 
reference to pressure relief devices for which preventative measures 
must be implemented. The correct reference is paragraph 40 CFR 
63.648(j)(3)(ii) not 40 CFR 63.648(j)(5). We are proposing to correct 
this referencing error.
    We request public comments on the above smokeless capacity work 
practice standard in 40 CFR 63.670(o), including the requirements to 
maintain records of prevention measures in 40 CFR 63.670(o)(1)(ii)(B) 
and (o)(1)(vi); the requirement to establish a single smokeless design 
capacity in 40 CFR 63.670(o)(1)(iii)(B); the number and type of 
releases/events that constitute a violation; the phrase ``. . . and the 
flare vent gas flow rate is less than the smokeless design capacity of 
the flare'' in 40 CFR 63.670(c) and (d)''; the proposed correction to 
paragraph 40 CFR 63.670(o)(1)(ii)(B); and other provisions in 40 CFR 
63.670(o)(3) through (7). We also request public comments on the 
recordkeeping and reporting requirements associated with these work 
practice standards in 40 CFR 63.655(g)(11)(iv) and (i)(9)(x) through 
(xii).

C. Assessment of Risk From the Refinery Source Categories After 
Implementation of the PRD and Emergency Flaring Work Practice Standards

    The results of our residual risk review for the Petroleum Refinery 
source categories were published in the June 30, 2014, proposal (79 FR 
36934 through 36942), and included assessment of chronic and acute 
inhalation risk, as well as multipathway and environmental risk, to 
inform our decisions regarding acceptability and ample margin of 
safety. The results indicated that the cancer risk to the individual 
most exposed (maximum individual risk or ``MIR'') based on allowable 
HAP emissions is no greater than approximately 100-in-1 million, which 
is the presumptive limit of acceptability, and that the MIR based on 
actual HAP emissions is no greater than approximately 60-in-1 million 
but may be closer to 40-in-1 million. In addition, the maximum chronic 
non-cancer target organ-specific hazard index (TOSHI) due to inhalation 
exposures was less than 1. The evaluation of acute non-cancer risks, 
which was conservative, showed acute risks below a level of concern. 
Based on the results of a refined site-specific multipathway analysis 
portion of the risk review, we also concluded that the cancer risk to 
the individual most exposed through ingestion is considerably less than 
100-in-1 million.
    In the final Refinery MACT 1 rule, we established work practice 
standards for PRD releases and emergency flaring events, which under 
the proposed rule would not have been allowed. Thus, because we did not 
consider such non-routine emissions under our risk assessment for the 
proposed rule, we performed a screening assessment of risk associated 
with these emissions for the final rule as discussed in detail in 
``Final Residual Risk Assessment for the Petroleum Refining Source 
Sector'' in Docket ID No. EPA-HQ-OAR-2010-0682. Our analysis showed 
that these HAP emissions could increase the MIR based on actual 
emissions by as much as 2-in-1 million, which results in essentially 
the same level of risk as was estimated at proposal. We also estimated 
that chronic non-cancer TOSHIs attributable to the additional exposures 
from non-routine flaring and PRD HAP emissions are well below 1. When 
adding the additional chronic noncancer TOSHI risks from the screening 
analysis with the analysis in the proposal, chronic noncancer TOSHI 
risks still remain below 1. Further, our screening analysis also 
projected that maximum acute exposure to non-routine PRD and flare 
emissions would result in a maximum hazard quotient (HQ) of 14 from 
benzene emissions based on a reference exposure level (REL). Based on 
risk analysis performed for the proposed rule and the screening 
assessment to consider how conclusions from that analysis would be 
affected by the additional non-routine flare and PRD emissions allowed 
under the final rule, we determined that the risk posed after 
implementation of the revisions to the MACT standards is acceptable.
    We request public comments on the screening analysis and the 
conclusions reached based on that analysis in conjunction with the risk 
analysis performed for the proposed rule.

D. Alternative Work Practice Standards for DCUs Employing the Water 
Overflow Design

    In Refinery MACT 1, we finalized MACT standards for DCU decoking

[[Page 71666]]

operations. Existing DCU-affected sources must comply with a 2 psig or 
220 degrees Fahrenheit ([deg]F) limit in the drum overhead line 
determined on a rolling 60-event basis prior to venting to the 
atmosphere, draining, or deheading the coke drum. New DCU affected 
sources must comply with a 2.0 psig or 218[emsp14][deg]F limit in the 
drum overhead line on a per-event, not-to-exceed basis. In the final 
rule, we also finalized an alternative requirement to address DCU with 
water overflow design that we did not propose, where pressure 
monitoring would not be appropriate. As part of these provisions, we 
also included a new requirement in the final rule for DCU with water 
overflow design to hard-pipe the overflow drain water to the receiving 
tank via a submerged fill pipe (pipe below the existing liquid level) 
whenever the overflow water exceeds 220[emsp14][deg]F.
    We request public comments on the alternative work practice 
standard for delayed coking units employing a water overflow design 
provided in 40 CFR 63.657(e).

E. Reduced Frequency of Fenceline Monitoring

    In the December 2015 final rule, we revised Refinery MACT 1 to 
establish a work practice standard requiring refinery owners to monitor 
benzene concentrations around the fenceline or perimeter of the 
refinery. We promulgated new EPA Methods 325A and B which specify 
monitor siting and quantitative sample analysis procedures. The work 
practice is designed to improve the management of fugitive emissions at 
petroleum refineries through the use of passive monitors by requiring 
sources to implement corrective measures if the benzene concentration 
in air attributable to emissions from the refinery exceeds a fenceline 
benzene concentration action level. The work practice requires refinery 
owners to reduce fenceline levels that exceed the concentration action 
level to at or below that level. In the final rule, we included 
provisions that were not proposed that would allow for reduced 
monitoring frequency (after 2 years of continual monitoring) at 
monitoring locations with consistently low fenceline concentrations.
    We request public comments on the provision allowing refineries to 
reduce the frequency of fenceline monitoring at monitoring sites that 
consistently record benzene concentrations below 0.9 micrograms per 
cubic meter, as provided in 40 CFR 63.658(e)(3).

IV. Proposed Technical Clarifications

    In this action, the EPA is proposing to amend provisions related to 
how to address overlapping requirements for equipment leaks that are 
contained in Refinery MACT 1 and in the Refinery Equipment Leak NSPS 
(40 CFR part 60, subpart GGGa). The Refinery MACT 1 provision at 40 CFR 
63.640(p)(2) currently states that equipment leaks that are subject to 
the provisions in the Refinery Equipment Leak NSPS (40 CFR part 60 
subpart GGGa) are only required to comply with the provisions in the 
Refinery Equipment Leak NSPS. However, the Refinery Equipment Leak NSPS 
does not include the new work practice standards finalized in the final 
Refinery MACT 1 at 40 CFR 63.648(j) which apply to releases from PRD. 
Certain provisions of 40 CFR 63.648(j) detail a work practice standard 
for the management of releases from PRD. We intended that these new 
work practice standards would be applicable to all PRD at refineries, 
including those PRD subject to the requirements in the Refinery 
Equipment Leaks NSPS. In order to provide clarity and assure that 
stakeholders subject to these provisions fully understand their 
compliance obligations, we are proposing that equipment components that 
are also subject to the provisions of the Refinery Equipment Leak NSPS, 
are required to comply with the provisions specified in the Refinery 
Equipment Leaks NSPS, except for PRDs in organic HAP service, which 
must only comply with the requirements in Refinery MACT 1 at 40 CFR 
63.648(j) for PRDs. We are also amending the introductory text in 40 
CFR 63.648(j) to reference Refinery Equipment Leaks NSPS at 40 CFR 
60.482-4a and amending paragraphs (j)(2)(i) through (iii) of Refinery 
MACT 1 to correct the existing reference to 40 CFR 60.485(b), which 
should refer to 40 CFR 60.485(c) and 40 CFR 60.485a(c).

V. Statutory and Executive Order Reviews

    Additional information about these statues and Executive Orders can 
be found at http://www2.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. Paperwork Reduction Act (PRA)

    This action does not impose any new information collection burden 
under the PRA. OMB has previously approved the information collection 
activities contained in the existing regulations at 40 CFR part 63, 
subpart CC and has assigned OMB control number 2060-0340. The proposed 
amendments are the result of a clarification that does not affect the 
estimated burden of the existing rule. Specifically, we are proposing 
amendments clarifying that facilities using the equipment leak overlap 
provisions must also comply with the PRD work practice standard in 40 
CFR part 63, subpart CC. In our burden estimates for the December 1, 
2015, final rule, we assumed that all major source refineries would 
have to comply with the PRD work practice standards. Consequently, the 
burden estimates provided with the December 1, 2015, final rule are 
consistent with the proposed clarifying amendment. Therefore, we have 
not revised the information collection request for the existing rule.

C. 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. The proposed rule consists of a 
clarification which does not change the expected economic impact 
analysis performed for the existing rule. We have, therefore, concluded 
that this action will have no net regulatory burden for all directly 
regulated small entities.

D. Unfunded Mandates Reform Act (UMRA)

    This action does not contain an unfunded mandate of $100 million or 
more 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.

E. 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.

[[Page 71667]]

F. 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 not have substantial direct effect on 
tribal governments, on the relationship between the federal government 
and Indian tribes, or on the distribution of power and responsibilities 
between the federal government and Indian tribes, as specified in 
Executive Order 13175. Thus, Executive Order 13175 does not apply to 
this action.

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

    This action is not subject to Executive Order 13045 because it is 
not economically significant as defined in Executive Order 12866, and 
because the EPA does not believe the environmental health or safety 
risks addressed by this action present a disproportionate risk to 
children. This action requests comment on a risk assessment that is 
described in section III. C. of this preamble.

H. 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 energy action under Executive Order 12866.

I. National Technology Transfer and Advancement Act (NTTAA)

    This rulemaking does not involve technical standards.

J. 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 
proposed amendments serve to clarify one aspect of the rule. They do 
not relax the control measures on regulated sources, and, therefore, do 
not change the level of environmental protection.

List of Subjects in 40 CFR Part 63

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

    Dated: October 6, 2016.
Gina McCarthy,
Administrator.
    For the reasons stated in the preamble, title 40, chapter I, of the 
Code of Federal Regulations 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 CC--National Emission Standards for Hazardous Air 
Pollutants From Petroleum Refineries

0
2. Section 63.640 is amended by revising paragraph (p)(2) to read as 
follows:


Sec.  63.640  Applicability and designation of affected source.

* * * * *
    (p) * * *
    (2) Equipment leaks that are also subject to the provisions of 40 
CFR part 60, subpart GGGa, are required to comply only with the 
provisions specified in 40 CFR part 60, subpart GGGa, except that 
pressure relief devices in organic HAP service must only comply with 
the requirements in Sec.  63.648(j).
* * * * *
0
3. Section 63.648 is amended by revising paragraphs (j) introductory 
text and (j)(2)(i) through (iii) to read as follows:


Sec.  63.648  Equipment leak standards.

* * * * *
    (j) Except as specified in paragraph (j)(4) of this section, the 
owner or operator must comply with the requirements specified in 
paragraphs (j)(1) and (2) of this section for pressure relief devices, 
such as relief valves or rupture disks, in organic HAP gas or vapor 
service instead of the pressure relief device requirements of Sec.  
60.482-4 of this chapter, Sec.  60.482-4a of this chapter, or Sec.  
63.165, as applicable. Except as specified in paragraphs (j)(4) and (5) 
of this section, the owner or operator must also comply with the 
requirements specified in paragraph (j)(3) of this section for all 
pressure relief devices.
* * * * *
    (2) * * *
    (i) If the pressure relief device does not consist of or include a 
rupture disk, conduct instrument monitoring, as specified in Sec.  
60.485(c) of this chapter, Sec.  60.485a(c) of this chapter, or Sec.  
63.180(c), as applicable, no later than 5 calendar days after the 
pressure relief device returns to organic HAP gas or vapor service 
following a pressure release to verify that the pressure relief device 
is operating with an instrument reading of less than 500 ppm.
    (ii) If the pressure relief device includes a rupture disk, either 
comply with the requirements in paragraph (j)(2)(i) of this section 
(not replacing the rupture disk) or install a replacement disk as soon 
as practicable after a pressure release, but no later than 5 calendar 
days after the pressure release. The owner or operator must conduct 
instrument monitoring, as specified in Sec.  60.485(c) of this chapter, 
Sec.  60.485a(c) of this chapter, or Sec.  63.180(c), as applicable, no 
later than 5 calendar days after the pressure relief device returns to 
organic HAP gas or vapor service following a pressure release to verify 
that the pressure relief device is operating with an instrument reading 
of less than 500 ppm.
    (iii) If the pressure relief device consists only of a rupture 
disk, install a replacement disk as soon as practicable after a 
pressure release, but no later than 5 calendar days after the pressure 
release. The owner or operator may not initiate startup of the 
equipment served by the rupture disk until the rupture disc is 
replaced. The owner or operator must conduct instrument monitoring, as 
specified in Sec.  60.485(c) of this chapter, Sec.  60.485a(c) of this 
chapter, or Sec.  63.180(c), as applicable, no later than 5 calendar 
days after the pressure relief device returns to organic HAP gas or 
vapor service following a pressure release to verify that the pressure 
relief device is operating with an instrument reading of less than 500 
ppm.
* * * * *
0
4. Section 63.670 is amended by revising paragraph (o)(1)(ii)(B) to 
read as follows:


Sec.  63.670  Requirements for flare control devices.

* * * * *
    (o) * * *
    (1) * * *
    (ii) * * *
    (B) Implementation of prevention measures listed for pressure 
relief devices in Sec.  63.648(j)(3)(ii) for each pressure relief valve 
that can discharge to the flare.
* * * * *
[FR Doc. 2016-25162 Filed 10-17-16; 8:45 am]
 BILLING CODE 6560-50-P



                                                                        Federal Register / Vol. 81, No. 201 / Tuesday, October 18, 2016 / Proposed Rules                                         71661

                                               (Authority: 38 U.S.C. 501, 2101, 2101A,                    referencing error. The EPA is seeking                 0682. Clearly mark the part or all of the
                                               2106)                                                      comment only on the five identified                   information that you claim to be CBI.
                                               ■  5. Amend § 8a.4 as follows:                             petition issues and on the proposed                   For CBI information on a disk or CD–
                                               ■  a. In paragraph (b), remove ‘‘$90,000’’                 compliance issue clarification and                    ROM that you mail to the EPA, mark the
                                               each place it appears and add in its                       referencing error amendments. The EPA                 outside of the disk or CD–ROM as CBI
                                               place ‘‘$200,000’’, remove ‘‘available to’’                will not respond to comments                          and then identify electronically within
                                               each place it appears and add in its                       addressing any other issues or any other              the disk or CD–ROM the specific
                                               place ‘‘selected by’’, and remove                          provisions of the final rule.                         information you claim as CBI. In
                                               ‘‘veteran’’ each place it appears and add                  DATES: Comments must be received on                   addition to one complete version of the
                                               in its place ‘‘individual’’;                               or before December 2, 2016.                           comment that includes information
                                               ■ b. In paragraph (c), remove ’’$90,000’’                  ADDRESSES: Submit your comments,                      claimed as CBI, you must submit a copy
                                               and add in its place ‘‘$200,000’’, remove                  identified by Docket ID No. EPA–HQ–                   of the comment that does not contain
                                               ‘‘available to’’ and add in its place                      OAR–2010–0682, at http://                             the information claimed as CBI for
                                               ‘‘selected by’’, remove ‘‘eligible veteran’’               www.regulations.gov. Follow the online                inclusion in the public docket.
                                               each place it appears and add in its                       instructions for submitting comments.                 Information so marked will not be
                                               place ‘‘eligible individual’’, and remove                  Once submitted, comments cannot be                    disclosed except in accordance with
                                               ‘‘a veteran’’ and add in its place ‘‘an                    edited or removed from Regulations.gov.               procedures set forth in 40 CFR part 2.
                                               individual’’; and                                          The EPA may publish any comment                          The http://www.regulations.gov Web
                                               ■ c. Revise the authority citation at the                  received to its public docket. Do not                 site is an ‘‘anonymous access’’ system,
                                               end of section.                                            submit electronically any information                 which means the EPA will not know
                                                  The revision reads as follows:                          you consider to be Confidential                       your identity or contact information
                                                                                                          Business Information (CBI) or other                   unless you provide it in the body of
                                               § 8a.4       Coverage.
                                                                                                          information whose disclosure is                       your comment. If you send an email
                                               *        *      *        *     *                                                                                 comment directly to the EPA without
                                                                                                          restricted by statute. Multimedia
                                               (Authority: 38 U.S.C. 501, 2101, 2101A,                    submissions (audio, video, etc.) must be              going through http://
                                               2106)                                                      accompanied by a written comment.                     www.regulations.gov, your email
                                               [FR Doc. 2016–25025 Filed 10–17–16; 8:45 am]               The written comment is considered the                 address will be automatically captured
                                               BILLING CODE 8320–01–P                                     official comment and should include                   and included as part of the comment
                                                                                                          discussion of all points you wish to                  that is placed in the public docket and
                                                                                                          make. The EPA is seeking comment                      made available on the Internet. If you
                                               ENVIRONMENTAL PROTECTION                                   only on the issues specifically identified            submit an electronic comment, the EPA
                                               AGENCY                                                     in this notice. The EPA will not respond              recommends that you include your
                                                                                                          to any comments addressing other                      name and other contact information in
                                               40 CFR Part 63                                             aspects of the final rules or any other               the body of your comment and with any
                                                                                                          related rulemakings. The EPA will                     disk or CD–ROM you submit. If the EPA
                                               [EPA–HQ–OAR–2010–0682; FRL–9954–25–
                                                                                                          generally not consider comments or                    cannot read your comment due to
                                               OAR]
                                                                                                          comment contents located outside of the               technical difficulties and cannot contact
                                               RIN 2060–AT18                                              primary submission (i.e. on the web,                  you for clarification, the EPA may not
                                                                                                          cloud, or other file sharing system). For             be able to consider your comment.
                                               National Emission Standards for                            additional submission methods, the full               Electronic files should not include
                                               Hazardous Air Pollutant Emissions:                         EPA public comment policy,                            special characters or any form of
                                               Petroleum Refinery Sector                                  information about CBI or multimedia                   encryption and be free of any defects or
                                               AGENCY:  Environmental Protection                          submissions, and general guidance on                  viruses.
                                               Agency (EPA).                                              making effective comments, please visit                  Docket. All documents in the docket
                                               ACTION: Proposed rule.                                     http://www2.epa.gov/dockets/                          are listed in the regulations.gov index.
                                                                                                          commenting-epa-dockets.                               Although listed in the index, some
                                               SUMMARY:   On December 1, 2015, the                          Instructions. Direct your comments to               information is not publicly available,
                                               Environmental Protection Agency (EPA)                      Docket ID No. EPA–HQ–OAR–2010–                        e.g., CBI or other information whose
                                               finalized amendments to the National                       0682. The EPA’s policy is that all                    disclosure is restricted by statute.
                                               Emission Standards for Hazardous Air                       comments received will be included in                 Certain other material, such as
                                               Pollutants (NESHAP) Refinery                               the public docket without change, and                 copyrighted material, is not placed on
                                               Maximum Achievable Control                                 will be made available online at http://              the Internet and will be publicly
                                               Technology (MACT) 1 and Refinery                           www.regulations.gov, including any                    available only in hard copy. Publicly
                                               MACT 2 regulations and the New                             personal information provided, unless                 available docket materials are available
                                               Source Performance Standards (NSPS)                        the comment includes information                      either electronically in regulations.gov
                                               for petroleum refineries. Subsequently,                    claimed to be CBI or other information                or in hard copy at the EPA Docket
                                               the EPA received three petitions for                       whose disclosure is restricted by statute.            Center, EPA WJC West Building, Room
                                               reconsideration of the final rules. The                    Do not submit information that you                    3334, 1301 Constitution Ave. NW.,
                                               EPA is announcing reconsideration and                      consider to be CBI or otherwise                       Washington, DC. The Public Reading
                                               request for public comment on five                         protected through http://                             Room is open from 8:30 a.m. to 4:30
                                               issues raised in the petitions for                         www.regulations.gov or email. Send or                 p.m., Monday through Friday, excluding
Lhorne on DSK30JT082PROD with PROPOSALS




                                               reconsideration where petitioners claim                    deliver information identified as CBI                 legal holidays. The telephone number
                                               that the public was not afforded an                        only to the following address: OAQPS                  for the Public Reading Room is (202)
                                               opportunity to comment. Additionally,                      Document Control Officer (C404–02),                   566–1744, and the telephone number for
                                               the EPA is proposing amendments to                         Office of Air Quality Planning and                    the EPA Docket Center is (202) 566–
                                               the final rule to clarify a compliance                     Standards, U.S. EPA, Research Triangle                1742. Visit the EPA Docket Center
                                               issue raised by stakeholders subject to                    Park, North Carolina 27711, Attention                 homepage at http://www.epa.gov/
                                               the final rule and to correct a                            Docket ID No. EPA–HQ–OAR–2010–                        epahome/dockets.htm for additional


                                          VerDate Sep<11>2014      12:33 Oct 17, 2016   Jkt 241001   PO 00000   Frm 00018   Fmt 4702   Sfmt 4702   E:\FR\FM\18OCP1.SGM   18OCP1


                                               71662                 Federal Register / Vol. 81, No. 201 / Tuesday, October 18, 2016 / Proposed Rules

                                               information about the EPA’s public                      While this list may not be exhaustive, to                  Order 13563: Improving Regulation and
                                               docket.                                                 ease the reading of this preamble and for                  Regulatory Review
                                                  Public hearing. A public hearing will                reference purposes, the EPA defines the                 B. Paperwork Reduction Act (PRA)
                                               be held if requested by October 24, 2016                following terms and acronyms here:                      C. Regulatory Flexibility Act (RFA)
                                                                                                                                                               D. Unfunded Mandates Reform Act
                                               to accept oral comments on this                         CAA Clean Air Act                                          (UMRA)
                                               proposed action. The hearing will be                    CBI confidential business information                   E. Executive Order 13132: Federalism
                                               held, if requested, on November 2, 2016                 CFR Code of Federal Regulations                         F. Executive Order 13175: Consultation
                                               at the EPA’s North Carolina Campus                      DCU delayed coking unit                                    and Coordination With Indian Tribal
                                               located at 109 T.W. Alexander Drive,                    EPA Environmental Protection Agency                        Governments
                                               Research Triangle Park, NC 27711. The                   FCCU fluid catalytic cracking unit                      G. Executive Order 13045: Protection of
                                               hearing, if requested, will begin at 9:00               HAP hazardous air pollutants                               Children From Environmental Health
                                                                                                       lbs/day pounds per day                                     Risks and Safety Risks
                                               a.m. (local time) and will conclude at                  LEL lower explosive limit
                                               1:00 p.m. (local time). To request a                                                                            H. Executive Order 13211: Actions
                                                                                                       MACT Maximum Achievable Control                            Concerning Regulations That
                                               hearing, to register to speak at a hearing,               Technology                                               Significantly Affect Energy Supply,
                                               or to inquire if a hearing will be held,                MIR maximum individual risk                                Distribution, or Use
                                               please contact Ms. Virginia Hunt at                     MPV miscellaneous process vent                          I. National Technology Transfer and
                                               (919) 541–0832 or by email at                           NESHAP National Emissions Standards for                    Advancement Act (NTTAA)
                                               hunt.virginia@epa.gov. The last day to                    Hazardous Air Pollutants                              J. Executive Order 12898: Federal Actions
                                               pre-register to speak at a hearing, if one              NSPS New Source Performance Standards                      To Address Environmental Justice in
                                                                                                       NTTAA National Technology Transfer and                     Minority Populations and Low-Income
                                               is held, will be October 31, 2016.
                                                                                                         Advancement Act                                          Populations
                                               Additionally, requests to speak will be                 OAQPS Office of Air Quality Planning and
                                               taken the day of the hearing at the                       Standards                                           I. General Information
                                               hearing registration desk, although                     OECA Office of Enforcement and
                                               preferences on speaking times may not                     Compliance Assurance                                A. What is the source of authority for
                                               be able to be fulfilled. Please note that               OMB Office of Management and Budget                   the reconsideration action?
                                               registration requests received before the               OSHA Occupational Safety and Health                      The statutory authority for this action
                                               hearing will be confirmed by the EPA                      Administration
                                                                                                                                                             is provided by sections 112 and
                                               via email.                                              PRA Paperwork Reduction Act
                                                                                                       PRD Pressure Relief Devices                           307(d)(7)(B) of the Clean Air Act
                                                  Please note that any updates made to                                                                       (CAA)(42 U.S.C. 7412 and
                                                                                                       psig pounds per square inch gauge
                                               any aspect of the hearing, including                    PSM Process Safety Management                         7607(d)(7)(B)).
                                               whether or not a hearing will be held,                  PTE potential to emit
                                               will be posted online at https://                                                                             B. Does this action apply to me?
                                                                                                       RC/CA root cause analysis and corrective
                                               www.epa.gov/stationary-sources-air-                       action                                                Regulated Entities. Categories and
                                               pollution/petroleum-refinery-sector-risk-               RFA Regulatory Flexibility Act                        entities potentially regulated by this
                                               and-technology-review-and-new-source.                   RMP Risk Management Plan                              action are shown in Table 1 of this
                                               We ask that you contact Ms. Virginia                    RTR residual risk and technology review               preamble.
                                               Hunt at (919) 541–0832 or by email at                   SRU sulfur recovery unit
                                                                                                       SSM startup, shutdown and malfunction
                                               hunt.virginia@epa.gov or monitor our                                                                            TABLE 1—INDUSTRIAL SOURCE CAT-
                                                                                                       STP standard temperature and pressure
                                               Web site to determine if a hearing will                 TTN Technology Transfer Network                         EGORIES AFFECTED BY THIS FINAL
                                               be held. The EPA does not intend to                     UMRA Unfunded Mandates Reform Act                       ACTION
                                               publish a notice in the Federal Register                VOC volatile organic compounds
                                               announcing any such updates.                            °F degrees Fahrenheit                                                                        NAICS a
                                                                                                                                                              NESHAP and source category
                                               FOR FURTHER INFORMATION CONTACT: For                                                                                                                  code
                                                                                                         Organization of This Document. The
                                               questions about this proposed action,                   information in this preamble is                       Petroleum Refining Industry .....      324110
                                               contact Ms. Brenda Shine, Sector                        organized as follows:
                                               Policies and Programs Division,                                                                                 a North   American    Industry    Classification
                                                                                                       I. General Information                                System.
                                               Refining and Chemicals Group (E143–                        A. What is the source of authority for the
                                               01), Office of Air Quality Planning and                       reconsideration action?                            Table 1 of this preamble is not
                                               Standards, U.S. Environmental                              B. Does this action apply to me?                   intended to be exhaustive, but rather to
                                               Protection Agency, Research Triangle                       C. Where can I get a copy of this document         provide a guide for readers regarding
                                               Park, North Carolina, 27711; telephone                        and other related information?                  entities likely to be affected by this
                                               number: (919) 541–3608; fax number:                     II. Background                                        action for the source categories listed.
                                               (919) 541–0246; and email address:                      III. Reconsideration Issues and Request for           To determine whether your facility is
                                               shine.brenda@epa.gov. For information                         Public Comments
                                                                                                          A. Work Practice Standards for PRDs
                                                                                                                                                             affected, you should examine the
                                               about the applicability of the NESHAP                                                                         applicability criteria in the appropriate
                                                                                                          B. Work Practice Standards for Emergency
                                               to a particular entity, contact Ms. Maria                     Flaring                                         NESHAP. If you have any questions
                                               Malave, Office of Enforcement and                          C. Assessment of Risk From the Refinery            regarding the applicability of any aspect
                                               Compliance Assurance, U.S.                                    Source Categories After Implementation          of these NESHAP, please contact the
                                               Environmental Protection Agency, EPA                          of the PRD and Emergency Flaring Work           appropriate person listed in the
                                               WJC South Building, 1200 Pennsylvania                         Practice Standards                              preceding FOR FURTHER INFORMATION
                                               Ave. NW., Washington, DC 20460;                            D. Alternative Work Practice Standards for         CONTACT section of this preamble.
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                                               telephone number: (202) 564–7027; fax                         DCUs Employing the Water Overflow
                                               number: (202) 564–0050; and email                             Design                                          C. Where can I get a copy of this
                                               address: malave.maria@epa.gov.                             E. Reduced Frequency of Fenceline                  document and other related
                                                                                                             Monitoring                                      information?
                                               SUPPLEMENTARY INFORMATION:                              IV. Proposed Technical Clarifications
                                                  Preamble Acronyms and                                V. Statutory and Executive Order Reviews                In addition to being available in the
                                               Abbreviations. We use multiple                             A. Executive Orders 12866: Regulatory              docket, an electronic copy of this
                                               acronyms and terms in this preamble.                          Planning and Review and Executive               proposal will also be available on the


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                                                                     Federal Register / Vol. 81, No. 201 / Tuesday, October 18, 2016 / Proposed Rules                                         71663

                                               Internet through the Technology                         docket (see Docket ID No. EPA–HQ–                     standards. The API/AFPM petition
                                               Transfer Network (TTN) Web site, a                      OAR–2010–0682).                                       outlined a number of specific issues
                                               forum for information and technology                       On January 19, 2016, API and AFPM                  related to the work practice standards
                                               exchange in various areas of air                        requested an administrative                           for PRDs and flares, and the alternative
                                               pollution control. Following signature                  reconsideration under section                         water overflow provisions for DCUs, as
                                               by the EPA Administrator, the EPA will                  307(d)(7)(B) of the CAA of certain                    well as a number of other specific issues
                                               post a copy of this proposed action at:                 provisions of Refinery MACT 1 and 2,                  on other aspects of the rule. On June 16,
                                               https://www.epa.gov/stationary-sources-                 as promulgated in the December 2015                   2016, the EPA granted the petitions for
                                               air-pollution/petroleum-refinery-sector-                final rule. Specifically, API and AFPM                reconsideration from Earthjustice and
                                               risk-and-technology-review-and-new-                     requested that the EPA reconsider the                 API/AFPM on the petitioners’ claims as
                                               source. Following publication in the                    maintenance vent provisions in Refinery               they relate to the following aspects of
                                               Federal Register, the EPA will post the                 MACT 1 for sources constructed on or                  the December 2015 revisions to the final
                                               Federal Register version and key                        before June 30, 2014; the alternate                   rule to provide an opportunity for
                                               technical documents at this Web site.                   startup, shutdown, or hot standby                     public notice and comment: (1) The
                                                                                                       standards for fluid catalytic cracking                work practice standards for PRDs; (2)
                                               II. Background                                          units (FCCU) constructed on or before                 the work practice standards for
                                                 On June 30, 2014, the EPA published                   June 30, 2014, in Refinery MACT 2; the                emergency flaring events; (3) the
                                               a proposed rule in the Federal Register                 alternate startup and shutdown for                    assessment of risk as modified based on
                                               addressing the risk and technology                      sulfur recovery units (SRU) constructed               implementation of these PRD and
                                               review (RTR) for the Petroleum Refinery                 on or before June 30, 2014, in Refinery               emergency flaring work practice
                                               NESHAP, 40 CFR part 63, subparts CC                     MACT 2; and the new catalytic                         standards; (4) the alternative work
                                               (Refinery MACT 1) and UUU (Refinery                     reforming units (CRU) purging                         practice standards for DCUs employing
                                               MACT 2). On December 1, 2015 (80 FR                     limitations in Refinery MACT 2. The                   the water overflow design; and (5) the
                                               75178), after receiving and addressing                  request pertained to providing and/or                 provision allowing refineries to reduce
                                               public comments, the EPA finalized                      clarifying the compliance time for these              the frequency of fenceline monitoring at
                                               determinations pursuant to CAA section                  sources. In response to this request and              sampling stations that consistently
                                               112(d)(6) and (f)(2) for the Petroleum                  additional information received relative              record benzene concentrations below
                                               Refinery source categories and amended                  to providing additional compliance time               0.9 micrograms per cubic meter.
                                               Refinery MACT 1 and 2 based on those                    for these provisions, the EPA issued a
                                                                                                       proposal on February 9, 2016 (81 FR                   III. Reconsideration Issues and Request
                                               determinations. The final December                                                                            for Public Comment
                                               2015 action included a determination                    6814). A final rule was published on
                                                                                                       July 13, 2016 (81 FR 45232, July 13,                     After reviewing the two February 1,
                                               that the remaining risk after
                                                                                                       2016), fully responding to the January                2016, petitions for reconsideration as
                                               promulgation of the revised NESHAP                                                                            described above, we granted
                                                                                                       19, 2016, initial petition for
                                               are acceptable and provide an ample                                                                           reconsideration to provide the public an
                                                                                                       reconsideration submitted by API and
                                               margin of safety. The December 2015                                                                           opportunity to comment on selected
                                                                                                       AFPM.
                                               action also finalized changes to Refinery                  On February 1, 2016, Earthjustice                  provisions of the December 2015
                                               MACT 1 and 2 pursuant to CAA section                    filed a petition for reconsideration of               amendments and the assessment of risk
                                               112(d)(2) and (3), notably revising the                 several aspects of the December 1, 2015,              as modified to account for the
                                               requirements for flares and pressure                    final rule, and on that same day API and              implementation of the PRD and
                                               relief devices (PRD). The December                      AFPM submitted a supplemental                         emergency flaring work practice
                                               2015 action also finalized technical                    petition for reconsideration, identifying             standards included in the December
                                               corrections and clarifications to                       additional issues on which they sought                2015 final rule. To ensure public
                                               Refinery NSPS subparts J and Ja to                      reconsideration. In these petitions, both             participation in its final decisions, the
                                               address issues raised by the American                   Earthjustice and API/AFPM requested                   Agency is requesting public comment
                                               Petroleum Institute (API) in their 2008                 that the EPA reconsider certain aspects               on these issues as described below. The
                                               petition for reconsideration of the final               of the December 2015 revisions to                     EPA is seeking comment only on these
                                               NSPS Ja rule that had not been                          Refinery MACT 1 and 2, noting that                    five specific issues. The EPA will not
                                               previously addressed. These include                     CAA section 307(d)(7)(B) authorizes the               respond to any comments addressing
                                               corrections and clarifications to                       EPA to reconsider a rule where it is                  any other provisions of the December 1,
                                               provisions for sulfur recovery plants,                  impracticable to raise an objection                   2015, final Refinery Sector Rule or any
                                               performance testing, and control device                 during the period for public comment                  other rule or issues.
                                               operating parameters.                                   (but within the time specified for
                                                 Following promulgation, the EPA                                                                             A. Work Practice Standard for PRDs
                                                                                                       judicial review) or if the grounds for
                                               received three separate petitions for                   such an objection arose after the close                 In the proposed rule (79 FR 36970,
                                               reconsideration: Two jointly from API                   of the public comment period. In                      June 30, 2014), EPA proposed to revise
                                               and the American Fuel and                               particular, Earthjustice claimed that                 Refinery MACT 1 to establish operating
                                               Petrochemical Manufacturers (AFPM)                      several aspects of the revisions to                   and pressure release requirements that
                                               and one from Earthjustice (submitted on                 Refinery MACT 1 were not proposed,                    apply to all PRDs and to prohibit
                                               behalf of Air Alliance Houston,                         and, thus they were precluded from                    atmospheric releases of hazardous air
                                               California Communities Against Toxics,                  commenting on them during the public                  pollutants (HAP) from PRDs. To ensure
                                               Clean Air Council, Coalition for a Safe                 comment period: (1) Work practice                     compliance, we proposed to require that
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                                               Environment, Del Amo Action                             standards for PRDs and flares; (2)                    sources monitor PRDs using a system
                                               Committee, Environmental Integrity                      alternative water overflow provisions                 that is capable of recording the time and
                                               Project, Sierra Club, Texas                             for delayed coking units (DCU); (3)                   duration of each pressure release and
                                               Environmental Justice Advocacy                          reduced monitoring provisions for                     notifying operators that a pressure
                                               Services and Utah Physicians for a                      fenceline monitoring; and (4)                         release has occurred. Many commenters
                                               Healthy Environment). The petitions are                 adjustments to the risk assessment to                 suggested that a prohibition on
                                               available for review in the rulemaking                  account for these new work practice                   atmospheric PRD releases was not


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                                               71664                 Federal Register / Vol. 81, No. 201 / Tuesday, October 18, 2016 / Proposed Rules

                                               indicative of the best performing                       place of the prohibition on release to the            excluded from the work practice
                                               facilities, was unachievable and/or very                atmosphere based on what was achieved                 standard, they are subject to the
                                               costly, and would have negative                         by the best performers, as represented                operating and pressure relief
                                               environmental impacts due to                            by the two California rules. Consistent               requirements in 40 CFR 63.648(j)(1) and
                                               additional flares that would need to be                 with the proposed rule, the first                     (2), which apply to all PRDs.
                                               installed and operated in standby mode                  component of the work practice                           We request public comments on the
                                               to accept the PRD releases. Some                        standard requires that owners or                      work practice standard for PRDs as
                                               commenters suggested that we should                     operators monitor PRDs using a system                 provided in 40 CFR 63.648(j)(3) and (5)
                                               instead consider the rules on PRDs that                 that is capable of recording the time and             through (7), including the number and
                                               apply to refineries in the South Coast                  duration of each pressure release and                 type of release/event allowances; the
                                               Air Quality Management District                         notifying operators that a pressure                   type of PRDs covered by the work
                                               (SCAQMD) and the Bay Area Air                           release has occurred. Second, the work                practice standard; and the definition of
                                               Quality Management District                             practice standard requires refinery                   ‘‘force majeure event’’ in 40 CFR 63.641.
                                               (BAAQMD).                                               owners or operators to establish                      We also request public comments on the
                                                  Based on these comments, we                          preventative measures for each affected               recordkeeping and reporting
                                               evaluated the two California district                   PRD to prevent direct release of HAP to               requirements associated with the work
                                               rules and determined that 8 percent (or                 the atmosphere as a result of pressure                practice standard in 40 CFR
                                               12 refineries) are subject to these                     release events. Third, in the event of an             63.655(g)(10)(iii) and (i)(11).
                                               requirements, which was a sufficient                    atmospheric release, the work practice                B. Work Practice Standard for
                                               number of subject refineries to establish               standard requires refinery owners or                  Emergency Flaring
                                               work practice standards that represent                  operators to conduct a root cause
                                               the emissions limitation achieved in                                                                             In the June 2014 proposed rule, the
                                                                                                       analysis to determine the cause of a PRD
                                               practice by the best performers. The two                                                                      EPA proposed to amend the operating
                                                                                                       release event. If the root cause was due
                                               rules are similar in that they both                                                                           and monitoring requirements for
                                                                                                       to operator error or negligence, then the
                                               establish comprehensive regulatory                                                                            petroleum refinery flares. As discussed
                                                                                                       release would be a violation of the work
                                               programs to address the group or system                                                                       in the proposal at 79 FR 36904, we
                                                                                                       practice standard. A second release due
                                               of PRDs at refineries by requiring                                                                            determined that the requirements for
                                                                                                       to the same root cause for the same
                                               monitoring, root cause analysis, and                                                                          flares in the General Provisions at 40
                                                                                                       equipment in a 3-year period would be
                                               corrective action, and by focusing on                                                                         CFR 63.18 were not adequate to ensure
                                                                                                       a violation of the work practice
                                               PRDs with the greatest emissions                                                                              compliance with the Refinery MACT
                                                                                                       standard. A third release in a 3-year
                                               potential through a combination of                                                                            standards. In general, flares used as air
                                                                                                       period would be a violation of the work               pollution control devices are expected
                                               applicability thresholds (albeit with                   practice standard, regardless of the root
                                               differing thresholds between the two                                                                          to achieve a 98-percent HAP destruction
                                                                                                       cause. Force majeure events, as defined               efficiency. However, because flows of
                                               rules). In addition, both rules exclude                 in the final rule, would not count in
                                               emissions from certain types of PRDs—                                                                         waste gases to the flares had diminished
                                                                                                       determining whether there has been a                  based on reductions achieved by the
                                               typically lower-release potential PRDs,                 second or third event. The fourth
                                               liquid-type PRDs, or in the case of                                                                           increased use of flare gas recovery
                                                                                                       component of the work practice                        systems, there were times when the
                                               SCAAMD PRDs resulting from events                       standard is a requirement for corrective
                                               outside of the refinery’s control. We                                                                         waste gas to the flare contained
                                                                                                       action. For any event other than a force              insufficient heat content to adequately
                                               considered the two rules as the basis for
                                                                                                       majeure event, the owner or operator                  combust and, thus, a 98-percent HAP
                                               determining the best performers for
                                                                                                       would be required to conduct a                        destruction efficiency was not being
                                               establishing the work practice standard
                                                                                                       corrective action analysis and                        achieved. In addition, the practice of
                                               that is included in the December 2015
                                                                                                       implement the results of the corrective               applying assist media to the flare
                                               final Refinery Sector Rule (see 40 CFR
                                                                                                       action analysis. Refiners have 45 days to             (particularly steam to prevent smoking
                                               63.648(j)(3)). In doing so, similar to
                                                                                                       complete the root cause analysis and                  of the flare tip) had led to a decrease in
                                               these two rules, we established a work
                                                                                                       implement corrective action after the                 the combustion efficiency of flares.
                                               practice standard that is a
                                                                                                       release event. The results of the root                   To ensure that a 98-percent HAP
                                               comprehensive set of requirements that
                                                                                                       cause analysis and corrective action are              destruction efficiency was being met, as
                                               apply to the group of PRDs at refineries,
                                               and that focuses on reducing the size                   due with the periodic reports on a semi-              contemplated at the time the MACT
                                               and frequency of atmospheric releases                   annual basis.                                         standard was promulgated, we proposed
                                               of HAP from PRDs, with an emphasis on                     We excluded the following PRDs that                 revisions to Refinery MACT 1 that
                                               prevention, monitoring, correction, and                 have very low potential to emit (PTE)                 required flares to operate with a
                                               limitations on the frequency of release                 based on their type of service, size and              continuously-lit pilot flame at all times
                                               events. For further details on our                      pressure from the work practice                       when gases are sent to the flare, with no
                                               analysis of the SCAQMD and BAAQMD                       standard: PRDs that only release                      visible emissions except for periods not
                                               rules and our use of those rules to                     material that is liquid at standard                   to exceed 5 minutes during any 2
                                               establish a comprehensive work practice                 temperature and pressure (STP) and that               consecutive hours, and to meet flare tip
                                               standard for PRDs that are                              are hard-piped to a controlled drain                  velocity limits and combustion zone
                                               representative of the best performing                   system, PRDs that do not have a PTE of                operating limits at all times when gases
                                               refineries, refer to the December 1, 2015,              72 pounds per day (lbs/day) or more of                are flared.
                                                                                                       volatile organic compounds (VOC),                        During the comment period on the
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                                               notice at 80 FR 75216 and the
                                               memorandum in the docket titled,                        PRDs with design release pressure of                  proposed rule, we received comments
                                               ‘‘Pressure Relief Device Control Option                 less than 2.5 pounds per square inch                  that the concern over insufficient heat
                                               Impacts for Final Refinery Sector Rule,                 gauge (psig), PRDs on mobile                          content of the waste gas or over-
                                               July 30, 2015 (Docket ID No. EPA–HQ–                    equipment, PRDs in heavy liquid                       assisting are less problematic in
                                               OAR–2010–0682–0750).                                    service, and PRDs that are designed                   attaining a high level of destruction
                                                  In the final rule, we established a                  solely to release due to liquid thermal               efficiency at the flare in emergency
                                               four-part work practice standard in                     expansion. Although these PRDs are                    situations, where the flow in the flare


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                                                                     Federal Register / Vol. 81, No. 201 / Tuesday, October 18, 2016 / Proposed Rules                                          71665

                                               exceeds the smokeless capacity of the                   rolling 3-year period is a violation of the           be closer to 40-in-1 million. In addition,
                                               flare. Thus, commenters suggested that                  work practice standard, regardless of the             the maximum chronic non-cancer target
                                               better combustion was assured closer to                 cause. However, force majeure events                  organ-specific hazard index (TOSHI)
                                               the incipient smoke point of the flare                  are excluded from the event count. The                due to inhalation exposures was less
                                               and that flow velocity limits and limits                requirements for a continuously-lit pilot             than 1. The evaluation of acute non-
                                               on visible emissions should not apply                   flame, combustion-zone operating limits               cancer risks, which was conservative,
                                               during flaring events.                                  and the monitoring, recordkeeping and                 showed acute risks below a level of
                                                  In the final rule, we determined that                reporting requirements apply at all                   concern. Based on the results of a
                                               it was appropriate to set different                     times (whether the flare is operating                 refined site-specific multipathway
                                               standards for when a flare is operating                 below, at, or above its smokeless                     analysis portion of the risk review, we
                                               below its smokeless capacity and when                   capacity), including during a force                   also concluded that the cancer risk to
                                               it is operating above its smokeless                     majeure event.                                        the individual most exposed through
                                               capacity. We finalized the proposed                        In reviewing the regulatory text for               ingestion is considerably less than 100-
                                               requirements (with minor revisions) to                  this proposed action, we determined                   in-1 million.
                                               apply when a flare is operating below its               that 40 CFR 63.670(o)(1)(ii)(B) contains                 In the final Refinery MACT 1 rule, we
                                               smokeless capacity.                                     an incorrect reference to pressure relief             established work practice standards for
                                                  We established a separate work                       devices for which preventative                        PRD releases and emergency flaring
                                               practice standard that applies when a                   measures must be implemented. The                     events, which under the proposed rule
                                               flare exceeds its smokeless capacity. As                correct reference is paragraph 40 CFR                 would not have been allowed. Thus,
                                               with flares operating below the                         63.648(j)(3)(ii) not 40 CFR 63.648(j)(5).             because we did not consider such non-
                                               smokeless capacity, the work practice                   We are proposing to correct this                      routine emissions under our risk
                                               standard requires the refinery to have a                referencing error.                                    assessment for the proposed rule, we
                                               continuously-lit pilot flame and meet                      We request public comments on the                  performed a screening assessment of
                                               combustion zone operating limits (e.g.,                 above smokeless capacity work practice                risk associated with these emissions for
                                               heat content in the combustion zone) at                 standard in 40 CFR 63.670(o), including               the final rule as discussed in detail in
                                               all times and meet the monitoring,                      the requirements to maintain records of               ‘‘Final Residual Risk Assessment for the
                                               recordkeeping, and reporting                            prevention measures in 40 CFR                         Petroleum Refining Source Sector’’ in
                                               requirements. These requirements are                    63.670(o)(1)(ii)(B) and (o)(1)(vi); the               Docket ID No. EPA–HQ–OAR–2010–
                                               the most critical in ensuring that a 98-                requirement to establish a single                     0682. Our analysis showed that these
                                               percent destruction efficiency is being                 smokeless design capacity in 40 CFR                   HAP emissions could increase the MIR
                                               met. The work practice standard also                    63.670(o)(1)(iii)(B); the number and type             based on actual emissions by as much
                                               requires owners or operators to develop                 of releases/events that constitute a                  as 2-in-1 million, which results in
                                               flare management plans to identify the                  violation; the phrase ‘‘. . . and the flare           essentially the same level of risk as was
                                               flare system smokeless capacity and                     vent gas flow rate is less than the                   estimated at proposal. We also
                                               flare components, waste gas streams that                smokeless design capacity of the flare’’              estimated that chronic non-cancer
                                               are flared, monitoring systems and their                in 40 CFR 63.670(c) and (d)’’; the                    TOSHIs attributable to the additional
                                               locations, procedures that will be                      proposed correction to paragraph 40                   exposures from non-routine flaring and
                                               followed to limit discharges to the flare               CFR 63.670(o)(1)(ii)(B); and other                    PRD HAP emissions are well below 1.
                                               that cause the flare to exceed its                      provisions in 40 CFR 63.670(o)(3)                     When adding the additional chronic
                                               smokeless capacity, and prevention                      through (7). We also request public                   noncancer TOSHI risks from the
                                               measures implemented for PRDs that                      comments on the recordkeeping and                     screening analysis with the analysis in
                                               discharge to the flare header. The work                 reporting requirements associated with                the proposal, chronic noncancer TOSHI
                                               practice standard requires refinery                     these work practice standards in 40 CFR               risks still remain below 1. Further, our
                                               owners or operators to conduct a                        63.655(g)(11)(iv) and (i)(9)(x) through               screening analysis also projected that
                                               specific root cause analysis and take                   (xii).                                                maximum acute exposure to non-
                                               corrective action for any flaring event                                                                       routine PRD and flare emissions would
                                                                                                       C. Assessment of Risk From the Refinery
                                               that exceeds the flare’s smokeless                                                                            result in a maximum hazard quotient
                                                                                                       Source Categories After Implementation
                                               capacity and that also exceeds the flare                                                                      (HQ) of 14 from benzene emissions
                                                                                                       of the PRD and Emergency Flaring Work
                                               tip velocity and/or visible emissions                                                                         based on a reference exposure level
                                                                                                       Practice Standards
                                               limit. Refiners have 45 days to complete                                                                      (REL). Based on risk analysis performed
                                               the root cause analysis and implement                      The results of our residual risk review            for the proposed rule and the screening
                                               corrective action after an event. The                   for the Petroleum Refinery source                     assessment to consider how conclusions
                                               results of the root cause and corrective                categories were published in the June                 from that analysis would be affected by
                                               action are due with the periodic reports                30, 2014, proposal (79 FR 36934 through               the additional non-routine flare and
                                               on a semi-annual basis.                                 36942), and included assessment of                    PRD emissions allowed under the final
                                                  If the root cause analysis indicates                 chronic and acute inhalation risk, as                 rule, we determined that the risk posed
                                               that the exceedance of the flare tip                    well as multipathway and                              after implementation of the revisions to
                                               velocity and/or the visible emissions                   environmental risk, to inform our                     the MACT standards is acceptable.
                                               limit is caused by operator error or poor               decisions regarding acceptability and                    We request public comments on the
                                               maintenance, the exceedance is a                        ample margin of safety. The results                   screening analysis and the conclusions
                                               violation of the work practice standard.                indicated that the cancer risk to the                 reached based on that analysis in
                                               A second event causing an exceedance                    individual most exposed (maximum
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                                                                                                                                                             conjunction with the risk analysis
                                               of either the flare tip velocity or the                 individual risk or ‘‘MIR’’) based on                  performed for the proposed rule.
                                               visible emissions limit within a rolling                allowable HAP emissions is no greater
                                               3-year period from the same root cause                  than approximately 100-in-1 million,                  D. Alternative Work Practice Standards
                                               on the same equipment is a violation of                 which is the presumptive limit of                     for DCUs Employing the Water Overflow
                                               the standard. A third exceedance of the                 acceptability, and that the MIR based on              Design
                                               velocity or visible emissions limit                     actual HAP emissions is no greater than                 In Refinery MACT 1, we finalized
                                               occurring from the same flare in a                      approximately 60-in-1 million but may                 MACT standards for DCU decoking


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                                               71666                 Federal Register / Vol. 81, No. 201 / Tuesday, October 18, 2016 / Proposed Rules

                                               operations. Existing DCU-affected                       IV. Proposed Technical Clarifications                 PRA. OMB has previously approved the
                                               sources must comply with a 2 psig or                       In this action, the EPA is proposing to            information collection activities
                                               220 degrees Fahrenheit (°F) limit in the                amend provisions related to how to                    contained in the existing regulations at
                                               drum overhead line determined on a                      address overlapping requirements for                  40 CFR part 63, subpart CC and has
                                               rolling 60-event basis prior to venting to              equipment leaks that are contained in                 assigned OMB control number 2060–
                                               the atmosphere, draining, or deheading                  Refinery MACT 1 and in the Refinery                   0340. The proposed amendments are the
                                               the coke drum. New DCU affected                         Equipment Leak NSPS (40 CFR part 60,                  result of a clarification that does not
                                               sources must comply with a 2.0 psig or                  subpart GGGa). The Refinery MACT 1                    affect the estimated burden of the
                                               218 °F limit in the drum overhead line                  provision at 40 CFR 63.640(p)(2)                      existing rule. Specifically, we are
                                               on a per-event, not-to-exceed basis. In                 currently states that equipment leaks                 proposing amendments clarifying that
                                               the final rule, we also finalized an                    that are subject to the provisions in the             facilities using the equipment leak
                                               alternative requirement to address DCU                  Refinery Equipment Leak NSPS (40 CFR                  overlap provisions must also comply
                                               with water overflow design that we did                  part 60 subpart GGGa) are only required               with the PRD work practice standard in
                                                                                                       to comply with the provisions in the                  40 CFR part 63, subpart CC. In our
                                               not propose, where pressure monitoring
                                                                                                       Refinery Equipment Leak NSPS.                         burden estimates for the December 1,
                                               would not be appropriate. As part of
                                                                                                       However, the Refinery Equipment Leak                  2015, final rule, we assumed that all
                                               these provisions, we also included a
                                                                                                       NSPS does not include the new work                    major source refineries would have to
                                               new requirement in the final rule for                                                                         comply with the PRD work practice
                                               DCU with water overflow design to                       practice standards finalized in the final
                                                                                                       Refinery MACT 1 at 40 CFR 63.648(j)                   standards. Consequently, the burden
                                               hard-pipe the overflow drain water to                                                                         estimates provided with the December
                                               the receiving tank via a submerged fill                 which apply to releases from PRD.
                                                                                                       Certain provisions of 40 CFR 63.648(j)                1, 2015, final rule are consistent with
                                               pipe (pipe below the existing liquid                                                                          the proposed clarifying amendment.
                                               level) whenever the overflow water                      detail a work practice standard for the
                                                                                                       management of releases from PRD. We                   Therefore, we have not revised the
                                               exceeds 220 °F.                                                                                               information collection request for the
                                                                                                       intended that these new work practice
                                                  We request public comments on the                    standards would be applicable to all                  existing rule.
                                               alternative work practice standard for                  PRD at refineries, including those PRD                C. Regulatory Flexibility Act (RFA)
                                               delayed coking units employing a water                  subject to the requirements in the
                                               overflow design provided in 40 CFR                                                                               I certify that this action will not have
                                                                                                       Refinery Equipment Leaks NSPS. In
                                               63.657(e).                                                                                                    a significant economic impact on a
                                                                                                       order to provide clarity and assure that
                                                                                                       stakeholders subject to these provisions              substantial number of small entities
                                               E. Reduced Frequency of Fenceline                                                                             under the RFA. In making this
                                                                                                       fully understand their compliance
                                               Monitoring                                                                                                    determination, the impact of concern is
                                                                                                       obligations, we are proposing that
                                                                                                       equipment components that are also                    any significant adverse economic
                                                  In the December 2015 final rule, we                                                                        impact on small entities. An agency may
                                               revised Refinery MACT 1 to establish a                  subject to the provisions of the Refinery
                                                                                                       Equipment Leak NSPS, are required to                  certify that a rule will not have a
                                               work practice standard requiring                                                                              significant economic impact on a
                                               refinery owners to monitor benzene                      comply with the provisions specified in
                                                                                                       the Refinery Equipment Leaks NSPS,                    substantial number of small entities if
                                               concentrations around the fenceline or                                                                        the rule relieves regulatory burden, has
                                               perimeter of the refinery. We                           except for PRDs in organic HAP service,
                                                                                                       which must only comply with the                       no net burden, or otherwise has a
                                               promulgated new EPA Methods 325A                                                                              positive economic effect on the small
                                               and B which specify monitor siting and                  requirements in Refinery MACT 1 at 40
                                                                                                       CFR 63.648(j) for PRDs. We are also                   entities subject to the rule. The
                                               quantitative sample analysis                                                                                  proposed rule consists of a clarification
                                                                                                       amending the introductory text in 40
                                               procedures. The work practice is                                                                              which does not change the expected
                                                                                                       CFR 63.648(j) to reference Refinery
                                               designed to improve the management of                                                                         economic impact analysis performed for
                                                                                                       Equipment Leaks NSPS at 40 CFR
                                               fugitive emissions at petroleum                         60.482–4a and amending paragraphs                     the existing rule. We have, therefore,
                                               refineries through the use of passive                   (j)(2)(i) through (iii) of Refinery MACT              concluded that this action will have no
                                               monitors by requiring sources to                        1 to correct the existing reference to 40             net regulatory burden for all directly
                                               implement corrective measures if the                    CFR 60.485(b), which should refer to 40               regulated small entities.
                                               benzene concentration in air attributable               CFR 60.485(c) and 40 CFR 60.485a(c).                  D. Unfunded Mandates Reform Act
                                               to emissions from the refinery exceeds
                                                                                                       V. Statutory and Executive Order                      (UMRA)
                                               a fenceline benzene concentration
                                               action level. The work practice requires                Reviews                                                 This action does not contain an
                                               refinery owners to reduce fenceline                       Additional information about these                  unfunded mandate of $100 million or
                                               levels that exceed the concentration                    statues and Executive Orders can be                   more as described in UMRA, 2 U.S.C.
                                               action level to at or below that level. In              found at http://www2.epa.gov/laws-                    1531–1538, and does not significantly or
                                               the final rule, we included provisions                  regulations/laws-and-executive-orders.                uniquely affect small governments. The
                                               that were not proposed that would                                                                             action imposes no enforceable duty on
                                                                                                       A. Executive Order 12866: Regulatory                  any state, local, or tribal governments or
                                               allow for reduced monitoring frequency                  Planning and Review and Executive
                                               (after 2 years of continual monitoring) at                                                                    the private sector.
                                                                                                       Order 13563: Improving Regulation and
                                               monitoring locations with consistently                  Regulatory Review                                     E. Executive Order 13132: Federalism
                                               low fenceline concentrations.                                                                                   This action does not have federalism
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                                                                                                         This action is not a significant
                                                  We request public comments on the                    regulatory action and was, therefore, not             implications. It will not have substantial
                                               provision allowing refineries to reduce                 submitted to the Office of Management                 direct effects on the states, on the
                                               the frequency of fenceline monitoring at                and Budget (OMB) for review.                          relationship between the national
                                               monitoring sites that consistently record                                                                     government and the states, or on the
                                               benzene concentrations below 0.9                        B. Paperwork Reduction Act (PRA)                      distribution of power and
                                               micrograms per cubic meter, as                            This action does not impose any new                 responsibilities among the various
                                               provided in 40 CFR 63.658(e)(3).                        information collection burden under the               levels of government.


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                                                                     Federal Register / Vol. 81, No. 201 / Tuesday, October 18, 2016 / Proposed Rules                                               71667

                                               F. Executive Order 13175: Consultation                    Dated: October 6, 2016.                             § 60.485a(c) of this chapter, or
                                               and Coordination With Indian Tribal                     Gina McCarthy,                                        § 63.180(c), as applicable, no later than
                                               Governments                                             Administrator.                                        5 calendar days after the pressure relief
                                                 This action does not have tribal                        For the reasons stated in the                       device returns to organic HAP gas or
                                               implications as specified in Executive                  preamble, title 40, chapter I, of the Code            vapor service following a pressure
                                               Order 13175. It will not have substantial               of Federal Regulations is proposed to be              release to verify that the pressure relief
                                               direct effect on tribal governments, on                 amended as follows:                                   device is operating with an instrument
                                               the relationship between the federal                                                                          reading of less than 500 ppm.
                                               government and Indian tribes, or on the                 PART 63—NATIONAL EMISSION                                (ii) If the pressure relief device
                                               distribution of power and                               STANDARDS FOR HAZARDOUS AIR                           includes a rupture disk, either comply
                                               responsibilities between the federal                    POLLUTANTS FOR SOURCE                                 with the requirements in paragraph
                                               government and Indian tribes, as                        CATEGORIES                                            (j)(2)(i) of this section (not replacing the
                                               specified in Executive Order 13175.                                                                           rupture disk) or install a replacement
                                                                                                       ■ 1. The authority citation for part 63
                                               Thus, Executive Order 13175 does not                                                                          disk as soon as practicable after a
                                                                                                       continues to read as follows:
                                               apply to this action.                                                                                         pressure release, but no later than 5
                                                                                                           Authority: 42 U.S.C. 7401 et seq.
                                               G. Executive Order 13045: Protection of                                                                       calendar days after the pressure release.
                                               Children From Environmental Health                      Subpart CC—National Emission                          The owner or operator must conduct
                                               Risks and Safety Risks                                  Standards for Hazardous Air Pollutants                instrument monitoring, as specified in
                                                                                                       From Petroleum Refineries                             § 60.485(c) of this chapter, § 60.485a(c)
                                                 This action is not subject to Executive
                                                                                                                                                             of this chapter, or § 63.180(c), as
                                               Order 13045 because it is not                             2. Section 63.640 is amended by
                                                                                                       ■                                                     applicable, no later than 5 calendar days
                                               economically significant as defined in                  revising paragraph (p)(2) to read as                  after the pressure relief device returns to
                                               Executive Order 12866, and because the                  follows:                                              organic HAP gas or vapor service
                                               EPA does not believe the environmental
                                                                                                                                                             following a pressure release to verify
                                               health or safety risks addressed by this                § 63.640 Applicability and designation of
                                                                                                                                                             that the pressure relief device is
                                               action present a disproportionate risk to               affected source.
                                               children. This action requests comment                                                                        operating with an instrument reading of
                                                                                                       *     *      *    *     *                             less than 500 ppm.
                                               on a risk assessment that is described in                 (p) * * *
                                               section III. C. of this preamble.                         (2) Equipment leaks that are also                      (iii) If the pressure relief device
                                                                                                       subject to the provisions of 40 CFR part              consists only of a rupture disk, install a
                                               H. Executive Order 13211: Actions                                                                             replacement disk as soon as practicable
                                               Concerning Regulations That                             60, subpart GGGa, are required to
                                                                                                       comply only with the provisions                       after a pressure release, but no later than
                                               Significantly Affect Energy Supply,                                                                           5 calendar days after the pressure
                                               Distribution, or Use                                    specified in 40 CFR part 60, subpart
                                                                                                       GGGa, except that pressure relief                     release. The owner or operator may not
                                                 This action is not subject to Executive               devices in organic HAP service must                   initiate startup of the equipment served
                                               Order 13211 because it is not a                         only comply with the requirements in                  by the rupture disk until the rupture
                                               significant energy action under                         § 63.648(j).                                          disc is replaced. The owner or operator
                                               Executive Order 12866.                                                                                        must conduct instrument monitoring, as
                                                                                                       *     *      *    *     *
                                               I. National Technology Transfer and                     ■ 3. Section 63.648 is amended by                     specified in § 60.485(c) of this chapter,
                                               Advancement Act (NTTAA)                                 revising paragraphs (j) introductory text             § 60.485a(c) of this chapter, or
                                                                                                       and (j)(2)(i) through (iii) to read as                § 63.180(c), as applicable, no later than
                                                  This rulemaking does not involve                                                                           5 calendar days after the pressure relief
                                               technical standards.                                    follows:
                                                                                                                                                             device returns to organic HAP gas or
                                               J. Executive Order 12898: Federal                       § 63.648    Equipment leak standards.                 vapor service following a pressure
                                               Actions To Address Environmental                        *       *     *     *     *                           release to verify that the pressure relief
                                               Justice in Minority Populations and                        (j) Except as specified in paragraph               device is operating with an instrument
                                               Low-Income Populations                                  (j)(4) of this section, the owner or                  reading of less than 500 ppm.
                                                  The EPA believes that this action does               operator must comply with the                         *       *      *    *     *
                                               not have disproportionately high and                    requirements specified in paragraphs
                                                                                                                                                             ■ 4. Section 63.670 is amended by
                                               adverse human health or environmental                   (j)(1) and (2) of this section for pressure
                                                                                                       relief devices, such as relief valves or              revising paragraph (o)(1)(ii)(B) to read as
                                               effects on minority populations, low-                                                                         follows:
                                               income populations, and/or indigenous                   rupture disks, in organic HAP gas or
                                               peoples, as specified in Executive Order                vapor service instead of the pressure                 § 63.670 Requirements for flare control
                                               12898 (59 FR 7629, February 16, 1994).                  relief device requirements of § 60.482–4              devices.
                                               The proposed amendments serve to                        of this chapter, § 60.482–4a of this
                                                                                                                                                             *      *    *    *     *
                                               clarify one aspect of the rule. They do                 chapter, or § 63.165, as applicable.
                                                                                                       Except as specified in paragraphs (j)(4)                (o) * * *
                                               not relax the control measures on
                                               regulated sources, and, therefore, do not               and (5) of this section, the owner or                   (1) * * *
                                               change the level of environmental                       operator must also comply with the
                                                                                                                                                               (ii) * * *
                                               protection.                                             requirements specified in paragraph
                                                                                                       (j)(3) of this section for all pressure                 (B) Implementation of prevention
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                                               List of Subjects in 40 CFR Part 63                      relief devices.                                       measures listed for pressure relief
                                                 Environmental protection,                             *       *     *     *     *                           devices in § 63.648(j)(3)(ii) for each
                                               Administrative practice and procedures,                    (2) * * *                                          pressure relief valve that can discharge
                                               Air pollution control, Hazardous                           (i) If the pressure relief device does             to the flare.
                                               substances, Intergovernmental relations,                not consist of or include a rupture disk,             *      *    *    *     *
                                               Reporting and recordkeeping                             conduct instrument monitoring, as                     [FR Doc. 2016–25162 Filed 10–17–16; 8:45 am]
                                               requirements.                                           specified in § 60.485(c) of this chapter,             BILLING CODE 6560–50–P




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Document Created: 2016-10-17 23:52:29
Document Modified: 2016-10-17 23:52:29
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionProposed Rules
ActionProposed rule.
DatesComments must be received on or before December 2, 2016.
ContactFor questions about this proposed action, contact Ms. Brenda Shine, Sector Policies and Programs Division, Refining and Chemicals Group (E143-01), Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, 27711; telephone number: (919) 541-3608;
FR Citation81 FR 71661 
RIN Number2060-AT18
CFR AssociatedEnvironmental Protection; Administrative Practice and Procedures; Air Pollution Control; Hazardous Substances; Intergovernmental Relations and Reporting and Recordkeeping Requirements

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