(e)(8)(i) and (ii) of this section.
    (i) Prior to decoking operation, inspect the applicable ethylene
cracking furnace isolation valve(s) to confirm that the radiant tube(s)
being decoked is completely isolated from the ethylene production
process so that no emissions generated from decoking operations are
sent to the ethylene production process. If poor isolation is
identified, then the owner or operator must rectify the isolation issue
prior to continuing decoking operations to prevent leaks into the
ethylene production process.
    (ii) Prior to returning the ethylene cracking furnace to normal
operations after a decoking operation, inspect the applicable ethylene
cracking furnace isolation valve(s) to confirm that the radiant tube(s)
that was decoked is completely isolated from the decoking pot or
furnace firebox such that no emissions are sent from the radiant
tube(s) to the decoking pot or furnace firebox once the ethylene
cracking furnace returns to normal operation. If poor isolation is
identified, then the owner or operator must rectify the isolation issue
prior to continuing normal operations to prevent product from escaping
to the atmosphere through the decoking pot or furnace firebox.
    (9) Startup, shutdown, and malfunction referenced provisions.
Beginning no later than the compliance dates specified in Sec.
63.1102(c), the referenced provisions specified in paragraphs (e)(9)(i)
through (xv) of this section do not apply when demonstrating compliance
with paragraph (e)(3) of this section.
    (i) The second sentence of Sec.  63.181(d)(5)(i) of subpart H.
    (ii) Section 63.983(a)(5) of subpart SS.
    (iii) The phrase ``except during periods of start-up, shutdown and
malfunction as specified in the referencing subpart'' in Sec.
63.984(a) of subpart SS.
    (iv) The phrase ``except during periods of start-up, shutdown and
malfunction as specified in the referencing subpart'' in Sec.
63.985(a) of subpart SS.
    (v) The phrase ``other than start-ups, shutdowns, or malfunctions''
in Sec.  63.994(c)(1)(ii)(D) of subpart SS.
    (vi) Section 63.996(c)(2)(ii) of subpart SS.
    (vii) Section 63.997(e)(1)(i) of subpart SS.
    (viii) The term ``breakdowns'' from Sec.  63.998(b)(2)(i) of
subpart SS.
    (ix) Section 63.998(b)(2)(iii) of subpart SS.
    (x) The phrase ``other than periods of startups, shutdowns, and
malfunctions'' from Sec.  63.998(b)(5)(i)(A) of subpart SS.
    (xi) The phrase ``other than periods of startups, shutdowns, and
malfunctions'' from Sec.  63.998(b)(5)(i)(C) of subpart SS.
    (xii) The phrase ``except as provided in paragraphs (b)(6)(i)(A)
and (B) of this section'' from Sec.  63.998(b)(6)(i) of subpart SS.
    (xiii) The second sentence of Sec.  63.998(b)(6)(ii) of subpart SS.
    (xiv) Section 63.998(c)(1)(ii)(D) through (G) of subpart SS.
    (xv) Section 63.998(d)(1)(ii) of subpart SS.
    (xvi) Section 63.998(d)(3)(i) and (ii) of subpart SS.
    (xvii) The phrase ``(except periods of startup, shutdown, or
malfunction)'' from Sec.  63.1026(e)(1)(ii)(A) of subpart UU.
    (xviii) The phrase ``(except periods of startup, shutdown, or
malfunction)'' from Sec.  63.1028(e)(1)(i)(A) of subpart UU.
    (xix) The phrase ``(except periods of startup, shutdown, or
malfunction)'' from Sec.  63.1031(b)(1) of subpart UU.
* * * * *
0
20. Section 63.1104 is amended by revising paragraph (c) to read as
follows:

Sec.  63.1104   Process vents from continuous unit operations:
Applicability assessment procedures and methods.

* * * * *
    (c) Applicability assessment requirement. The TOC or organic HAP
concentrations, process vent volumetric flow rates, process vent
heating values, process vent TOC or organic HAP emission rates,
halogenated process vent determinations, process vent TRE index values,
and engineering assessments for process vent control applicability
assessment requirements are to be determined during maximum
representative operating conditions for the process, except as provided
in paragraph (d) of this section, or unless the Administrator specifies
or approves alternate operating conditions. For acrylic and modacrylic
fiber production affected sources, polycarbonate production affected
sources, and ethylene production affected sources, operations during
periods of malfunction shall not constitute representative conditions
for the purpose of an applicability test. For all other affected
sources, operations during periods of startup, shutdown, and
malfunction shall not constitute representative conditions for the
purpose of an applicability test.
* * * * *
0
21. Section 63.1105 is amended by revising paragraph (a) introductory
text and adding paragraph (a)(5).

Sec.  63.1105   Transfer racks.

    (a) Design requirements. Except as specified in paragraph (a)(5) of
this section, the owner or operator shall equip each transfer rack with
one of the control options listed in paragraphs (a)(1) through (5) of
this section.
* * * * *
    (5) Beginning no later than the compliance dates specified in Sec.
63.1102(c), if emissions are vented through a closed vent system to a
flare at an ethylene production affected source, then the owner or
operator must comply with the requirements specified in Sec.
63.1103(e)(4) instead of the requirements in Sec.  63.987 and the
provisions regarding flare compliance assessments at Sec.  63.997(a)
through (c).
* * * * *
0
22. Section 63.1107 is amended by revising paragraph (a) and adding
paragraph (h) to read as follows:

Sec.  63.1107   Equipment leaks.

    (a) Each piece of equipment within a process unit that can
reasonably be expected to contain equipment in organic HAP service is
presumed to be in organic HAP service unless an owner or operator
demonstrates that the piece of equipment is not in organic HAP service.
For a piece of equipment to be considered not in organic HAP service,
it must be determined that the percent organic HAP content can be
reasonably expected not to exceed the percent by weight control
applicability criteria specified in Sec.  63.1103 for an affected
source on an annual average basis. For purposes of determining the
percent organic HAP content of the process fluid that is contained in
or contacts equipment, Method 18 of 40 CFR part 60, appendix A shall be
used. For purposes of determining the percent organic HAP content of
the process fluid that is contained in or contacts equipment for the
ethylene production affected sources, the following methods shall be
used for equipment: For equipment in gas and vapor service, as that
term is defined in Subpart UU of this part, shall use Method 18 of 40
CFR

part 60, appendix A; for equipment in liquid service, as that term is
defined in Subpart UU of this part, shall use a combination of Method
18 of 40 CFR part 60, appendix A, SW-846-8260B (incorporated by
reference, see Sec.  63.14); and SW-846-8270D (incorporated by
reference, see Sec.  63.14), as appropriate.
* * * * *
    (h) Ethylene production pressure release requirements. Beginning no
later than the compliance dates specified in Sec.  63.1102(c), except
as specified in paragraph (h)(4) of this section, owners or operators
of ethylene production affected sources must comply with the
requirements specified in paragraphs (h)(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.  63.1030 of subpart UU or Sec.  63.165 of subpart
H. Beginning no later than the compliance dates specified in Sec.
63.1102(c), except as specified in paragraphs (h)(4) and (5) of this
section, the owner or operator must also comply with the requirements
specified in paragraphs (h)(3), and (6) through (8) of this section for
all pressure relief devices.
    (1) Operating requirements. Except during a pressure release,
operate each pressure relief device in organic HAP gas or vapor service
with an instrument reading of less than 500 ppm above background as
measured by the method in Sec.  63.1023(b) of subpart UU or Sec.
63.180(b) and (c) of subpart H.
    (2) Pressure release requirements. For pressure relief devices in
organic HAP gas or vapor service, the owner or operator must comply
with the applicable requirements in paragraphs (h)(2)(i) through (iii)
of this section following a pressure release.
    (i) If the pressure relief device does not consist of or include a
rupture disk, conduct instrument monitoring, as specified in Sec.
63.1023(b) of subpart UU or Sec.  63.180(b) and (c) of subpart H, 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 (h)(2)(i) of this section
(and do not replace 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.  63.1023(b) of
subpart UU or Sec.  63.180(b) and (c) of subpart H, 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 must 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.  63.1023(b) of subpart UU or Sec.  63.180(b) and (c)
of subpart H, 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.
    (3) Pressure release management. Except as specified in paragraphs
(h)(4) and (5) of this section, the owner or operator must comply with
the requirements specified in paragraphs (h)(3)(i) through (v) of this
section for all pressure relief devices in organic HAP service.
    (i) The owner or operator must equip each affected pressure relief
device with a device(s) or use a monitoring system that is capable of:
    (A) Identifying the pressure release;
    (B) Recording the time and duration of each pressure release; and
    (C) Notifying operators immediately that a pressure release is
occurring. The device or monitoring system must be either specific to
the pressure relief device itself or must be associated with the
process system or piping, sufficient to indicate a pressure release to
the atmosphere. Examples of these types of devices and systems include,
but are not limited to, a rupture disk indicator, magnetic sensor,
motion detector on the pressure relief valve stem, flow monitor, or
pressure monitor.
    (ii) The owner or operator must apply at least three redundant
prevention measures to each affected pressure relief device and
document these measures. Examples of prevention measures include:
    (A) Flow, temperature, liquid level and pressure indicators with
deadman switches, monitors, or automatic actuators. Independent, non-
duplicative systems within this category count as separate redundant
prevention measures.
    (B) Documented routine inspection and maintenance programs and/or
operator training (maintenance programs and operator training may count
as only one redundant prevention measure).
    (C) Inherently safer designs or safety instrumentation systems.
    (D) Deluge systems.
    (E) Staged relief system where the initial pressure relief device
(with lower set release pressure) discharges to a flare or other closed
vent system and control device.
    (iii) If any affected pressure relief device releases to atmosphere
as a result of a pressure release event, the owner or operator must
perform root cause analysis and corrective action analysis according to
the requirement in paragraph (h)(6) of this section and implement
corrective actions according to the requirements in paragraph (h)(7) of
this section. The owner or operator must also calculate the quantity of
organic HAP released during each pressure release event and report this
quantity as required in Sec.  63.1110(e)(8)(iii). Calculations may be
based on data from the pressure relief device monitoring alone or in
combination with process parameter monitoring data and process
knowledge.
    (iv) The owner or operator must determine the total number of
release events that occurred during the calendar year for each affected
pressure relief device separately. The owner or operator must also
determine the total number of release events for each pressure relief
device for which the root cause analysis concluded that the root cause
was a force majeure event, as defined in Sec.  63.1103(e)(2).
    (v) Except for pressure relief devices described in paragraphs
(h)(4) and (5) of this section, the following release events from an
affected pressure relief device are a violation of the pressure release
management work practice standards.
    (A) Any release event for which the root cause of the event was
determined to be operator error or poor maintenance.
    (B) A second release event not including force majeure events from
a single pressure relief device in a 3-calendar year period for the
same root cause for the same equipment.
    (C) A third release event not including force majeure events from a
single pressure relief device in a 3-calendar year period for any
reason.
    (4) Pressure relief devices routed to a control device, process,
fuel gas system, or drain system. (i) If all releases and potential
leaks from a pressure relief device are routed through a closed vent
system to a control device, back into the

process, a fuel gas system, or drain system, then the owner or operator
is not required to comply with paragraph (h)(1), (2), or (3) of this
section.
    (ii) Before the compliance dates specified in Sec.  63.1102(c),
both the closed vent system and control device (if applicable)
referenced in paragraph (h)(4)(i) of this section must meet the
applicable requirements specified in Sec.  63.982(b) and (c)(2).
Beginning no later than the compliance dates specified in Sec.
63.1102(c), both the closed vent system and control device (if
applicable) referenced in paragraph (h)(4)(i) of this section must meet
the applicable requirements specified in Sec.  63.982(c)(2), Sec.
63.983, and Sec.  63.1103(e)(4).
    (iii) The drain system (if applicable) referenced in paragraph
(h)(4)(i) of this section must meet the applicable requirements
specified in Sec.  61.346.
    (5) Pressure relief devices exempted from pressure release
management requirements. The following types of pressure relief devices
are not subject to the pressure release management requirements in
paragraph (h)(3) of this section.
    (i) Pressure relief devices in heavy liquid service, as defined in
Sec.  63.1020 of subpart UU.
    (ii) Thermal expansion relief valves.
    (iii) Pressure relief devices designed with a set relief pressure
of less than 2.5 psig.
    (iv) Pilot-operated pressure relief devices where the primary
release valve is routed through a closed vent system to a control
device or back into the process, a fuel gas system, or drain system.
    (v) Balanced bellows pressure relief devices where the primary
release valve is routed through a closed vent system to a control
device or back into the process, a fuel gas system, or drain system.
    (6) Root cause analysis and corrective action analysis. A root
cause analysis and corrective action analysis must be completed as soon
as possible, but no later than 45 days after a release event. Special
circumstances affecting the number of root cause analyses and/or
corrective action analyses are provided in paragraphs (h)(6)(i) through
(iv) of this section.
    (i) You may conduct a single root cause analysis and corrective
action analysis for a single emergency event that causes two or more
pressure relief devices that are installed on the same equipment to
release.
    (ii) You may conduct a single root cause analysis and corrective
action analysis for a single emergency event that causes two or more
pressure relief devices to release, regardless of the equipment served,
if the root cause is reasonably expected to be a force majeure event,
as defined in Sec.  63.1103(e)(2).
    (iii) Except as provided in paragraphs (h)(6)(i) and (ii) of this
section, if more than one pressure relief device has a release during
the same time period, an initial root cause analysis must be conducted
separately for each pressure relief device that had a release. If the
initial root cause analysis indicates that the release events have the
same root cause(s), the initial separate root cause analyses may be
recorded as a single root cause analysis and a single corrective action
analysis may be conducted.
    (7) Corrective action implementation. Each owner or operator
required to conduct a root cause analysis and corrective action
analysis as specified in paragraphs (h)(3)(iii) and (6) of this
section, must implement the corrective action(s) identified in the
corrective action analysis in accordance with the applicable
requirements in paragraphs (h)(7)(i) through (iii) of this section.
    (i) All corrective action(s) must be implemented within 45 days of
the event for which the root cause and corrective action analyses were
required or as soon thereafter as practicable. If an owner or operator
concludes that no corrective action should be implemented, the owner or
operator must record and explain the basis for that conclusion no later
than 45 days following the event.
    (ii) For corrective actions that cannot be fully implemented within
45 days following the event for which the root cause and corrective
action analyses were required, the owner or operator must develop an
implementation schedule to complete the corrective action(s) as soon as
practicable.
    (iii) No later than 45 days following the event for which a root
cause and corrective action analyses were required, the owner or
operator must record the corrective action(s) completed to date, and,
for action(s) not already completed, a schedule for implementation,
including proposed commencement and completion dates.
    (8) Flowing pilot-operated pressure relief devices. For ethylene
production affected sources that commenced construction or
reconstruction on or before October 9, 2019, owners or operators are
prohibited from installing a flowing pilot-operated pressure relief
device or replacing any pressure relief device with a flowing pilot-
operated pressure relief device after [date 3 years after date of
publication of final rule in the Federal Register]. For ethylene
production affected sources that commenced construction or
reconstruction after October 9, 2019, owners or operators are
prohibited from installing and operating flowing pilot-operated
pressure relief devices. For purpose of compliance with this paragraph,
a flowing pilot-operated pressure relief device means the type of
pilot-operated pressure relief device where the pilot discharge vent
continuously releases emissions to the atmosphere when the pressure
relief device is actuated.
0
23. Section 63.1108 is amended by revising paragraphs (a) introductory
text, (a)(4)(i) and (ii), (b)(1)(ii), (b)(2) introductory text, (b)(3),
(b)(4)(i) introductory text, and (b)(4)(ii)(B) to read as follows:

Sec.  63.1108   Compliance with standards and operation and maintenance
requirements.

    (a) Requirements. The requirements of paragraphs (a)(1), (2), and
(5) of this section apply to all affected sources except acrylic and
modacrylic fiber production affected sources, polycarbonate production
affected sources, and beginning no later than the compliance dates
specified in Sec.  63.1102(c), ethylene production affected sources.
The requirements of paragraph (a)(4) of this section apply only to
acrylic and modacrylic fiber production affected sources, polycarbonate
production affected sources and beginning no later than the compliance
dates specified in Sec.  63.1102(c), ethylene production affected
sources. The requirements of paragraphs (a)(3), (6), and (7) of this
section apply to all affected sources.
* * * * *
    (4) * * *
    (i) For acrylic and modacrylic fiber production affected sources
and polycarbonate production affected sources, and beginning no later
than the compliance dates specified in Sec.  63.1102(c), ethylene
production affected sources, the emission limitations and established
parameter ranges of this part shall apply at all times except during
periods of non-operation of the affected source (or specific portion
thereof) resulting in cessation of the emissions to which this subpart
applies. Equipment leak requirements shall apply at all times except
during periods of non-operation of the affected source (or specific
portion thereof) in which the lines are drained and depressurized
resulting in cessation of the emissions to which the equipment leak
requirements apply.
    (ii) General duty. At all times, the owner or operator must operate
and maintain any affected source, including associated air pollution
control

equipment and monitoring equipment, in a manner consistent with safety
and good air pollution control practices for minimizing emissions. The
general duty to minimize emissions does not require the owner or
operator to make any further efforts to reduce emissions if levels
required by the applicable standard have been achieved. Determination
of whether a source is operating in compliance with operation and
maintenance requirements will be based on information available to the
Administrator that may include, but is not limited to, monitoring
results, review of operation and maintenance procedures, review of
operation and maintenance records, and inspection of the affected
source.
* * * * *
    (b) * * *
    (1) * * *
    (ii) Excused excursions are not allowed for acrylic and modacrylic
fiber production affected sources, polycarbonate production affected
sources, and beginning no later than the compliance dates specified in
Sec.  63.1102(c), ethylene production affected sources. For all other
affected sources, including ethylene production affected sources prior
to the compliance dates specified in Sec.  63.1102(c), an excused
excursion, as described in Sec.  63.998(b)(6)(ii), is not a violation.
    (2) Parameter monitoring: Excursions. An excursion is not a
violation in cases where continuous monitoring is required and the
excursion does not count toward the number of excused excursions (as
described in Sec.  63.998(b)(6)(ii)), if the conditions of paragraphs
(b)(2)(i) or (ii) of this section are met, except that the conditions
of paragraph (b)(2)(i) of this section do not apply for acrylic and
modacrylic fiber production affected sources, polycarbonate production
affected sources, and beginning no later than the compliance dates
specified in Sec.  63.1102(c), ethylene production affected sources.
Nothing in this paragraph shall be construed to allow or excuse a
monitoring parameter excursion caused by any activity that violates
other applicable provisions of this subpart or a subpart referenced by
this subpart.
* * * * *
    (3) Operation and maintenance procedures. Determination of whether
acceptable operation and maintenance procedures are being used will be
based on information available to the Administrator. This information
may include, but is not limited to, monitoring results, review of
operation and maintenance procedures (including the startup, shutdown,
and malfunction plan under Sec.  63.1111, if applicable), review of
operation and maintenance records, and inspection of the affected
source, and alternatives approved as specified in Sec.  63.1113.
    (4) * * *
    (i) Applicability assessments. Unless otherwise specified in a
relevant test method required to assess control applicability, each
test shall consist of three separate runs using the applicable test
method. Each run shall be conducted for the time and under the
conditions specified in this subpart. The arithmetic mean of the
results of the three runs shall apply when assessing applicability.
Upon receiving approval from the Administrator, results of a test run
may be replaced with results of an additional test run if it meets the
criteria specified in paragraphs (b)(4)(i)(A) through (D) of this
section.
* * * * *
    (ii) * * *
    (B) For acrylic and modacrylic fiber production affected sources,
polycarbonate production affected sources, and beginning no later than
the compliance dates specified in Sec.  63.1102(c), ethylene production
affected sources, performance tests shall be conducted under such
conditions as the Administrator specifies to the owner or operator
based on representative performance of the affected source for the
period being tested. Representative conditions exclude periods of
startup and shutdown unless specified by the Administrator or an
applicable subpart. The owner or operator may not conduct performance
tests during periods of malfunction. The owner or operator must record
the process information that is necessary to document operating
conditions during the test and include in such record an explanation to
support that such conditions represent normal operation. Upon request,
the owner or operator shall make available to the Administrator such
records as may be necessary to determine the conditions of performance
tests.
* * * * *
0
23. Section 63.1109 is amended by adding paragraphs (e) through (i) to
read as follows:

Sec.  63.1109   Recordkeeping requirements.

* * * * *
    (e) Ethylene production flare records. For each flare subject to
the requirements in Sec.  63.1103(e)(4), owners or operators must keep
records specified in paragraphs (e)(1) through (15) of this section in
lieu of the information required in Sec.  63.998(a)(1) of subpart SS.
    (1) Retain records of the output of the monitoring device used to
detect the presence of a pilot flame as required in Sec.  63.670(b) of
subpart CC and Sec.  63.1103(e)(4)(vi)(D) for a minimum of 2 years.
Retain records of each 15-minute block during which there was at least
one minute that no pilot flame is present when regulated material is
routed to a flare for a minimum of 5 years. For each pressure-assisted
multi-point flare that uses cross-lighting, retain records of each 15-
minute block during which there was at least one minute that no pilot
flame is present on each stage when regulated material is routed to a
flare for a minimum of 5 years.
    (2) Retain records of daily visible emissions observations or video
surveillance images required in Sec.  63.670(h) of subpart CC as
specified in paragraphs (e)(2)(i) through (iv), as applicable, for a
minimum of 3 years.
    (i) To determine when visible emissions observations are required,
the record must identify all periods when regulated material is vented
to the flare.
    (ii) If visible emissions observations are performed using Method
22 at 40 CFR part 60, appendix A-7, then the record must identify
whether the visible emissions observation was performed, the results of
each observation, total duration of observed visible emissions, and
whether it was a 5-minute or 2-hour observation. Record the date and
start time of each visible emissions observation.
    (iii) If a video surveillance camera is used, then the record must
include all video surveillance images recorded, with time and date
stamps.
    (iv) For each 2-hour period for which visible emissions are
observed for more than 5 minutes in 2 consecutive hours, then the
record must include the date and start and end time of the 2-hour
period and an estimate of the cumulative number of minutes in the 2-
hour period for which emissions were visible.
    (3) The 15-minute block average cumulative flows for flare vent gas
and, if applicable, total steam, perimeter assist air, and premix
assist air specified to be monitored under Sec.  63.670(i) of subpart
CC, along with the date and time interval for the 15-minute block. If
multiple monitoring locations are used to determine cumulative vent gas
flow, total steam, perimeter assist air, and premix assist air, then
retain records of the 15-minute block average flows for each monitoring
location for a minimum of 2 years, and retain records of the 15-minute
block average cumulative flows that are used in subsequent calculations
for a minimum of 5 years. If pressure and temperature monitoring is
used, then retain records of the 15-minute

block average temperature, pressure, and molecular weight of the flare
vent gas or assist gas stream for each measurement location used to
determine the 15-minute block average cumulative flows for a minimum of
2 years, and retain records of the 15-minute block average cumulative
flows that are used in subsequent calculations for a minimum of 5
years.
    (4) The flare vent gas compositions specified to be monitored under
Sec.  63.670(j) of subpart CC. Retain records of individual component
concentrations from each compositional analysis for a minimum of 2
years. If an NHVvg analyzer is used, retain records of the 15-minute
block average values for a minimum of 5 years.
    (5) Each 15-minute block average operating parameter calculated
following the methods specified in Sec.  63.670(k) through (n) of
subpart CC, as applicable.
    (6) All periods during which operating values are outside of the
applicable operating limits specified in Sec.  63.670(d) through (f) of
subpart CC and Sec.  63.1103(e)(4)(vi) when regulated material is being
routed to the flare.
    (7) All periods during which the owner or operator does not perform
flare monitoring according to the procedures in Sec.  63.670(g) through
(j) of subpart CC.
    (8) For pressure-assisted multi-point flares, if a stage of burners
on the flare uses cross-lighting, then a record of any changes made to
the distance between burners.
    (9) For pressure-assisted multi-point flares, all periods when the
pressure monitor(s) on the main flare header show burners are operating
outside the range of the manufacturer's specifications. Indicate the
date and time for each period, the pressure measurement, the stage(s)
and number of burners affected, and the range of manufacturer's
specifications.
    (10) For pressure-assisted multi-point flares, all periods when the
staging valve position indicator monitoring system indicates a stage of
the pressure-assisted multi-point flare should not be in operation and
when a stage of the pressure-assisted multi-point flare should be in
operation and is not. Indicate the date and time for each period,
whether the stage was supposed to be open, but was closed or vice
versa, and the stage(s) and number of burners affected.
    (11) Records of periods when there is flow of vent gas to the
flare, but when there is no flow of regulated material to the flare,
including the start and stop time and dates of periods of no regulated
material flow.
    (12) Records when the flow of vent gas exceeds the smokeless
capacity of the flare, including start and stop time and dates of the
flaring event.
    (13) Records of the root cause analysis and corrective action
analysis conducted as required in Sec.  63.670(o)(3) of subpart CC,
including an identification of the affected flare, the date and
duration of the event, a statement noting whether the event resulted
from the same root cause(s) identified in a previous analysis and
either a description of the recommended corrective action(s) or an
explanation of why corrective action is not necessary under Sec.
63.670(o)(5)(i) of subpart CC.
    (14) For any corrective action analysis for which implementation of
corrective actions are required in Sec.  63.670(o)(5) of subpart CC, a
description of the corrective action(s) completed within the first 45
days following the discharge and, for action(s) not already completed,
a schedule for implementation, including proposed commencement and
completion dates.
    (15) Records described in Sec.  63.10(b)(2)(vi) and (xi).
    (f) Ethylene production maintenance vent records. For each
maintenance vent opening subject to the requirements in Sec.
63.1103(e)(5), the owner or operator must keep the applicable records
specified in (f)(1) through (5) of this section.
    (1) The owner or operator must maintain standard site procedures
used to deinventory equipment for safety purposes (e.g., hot work or
vessel entry procedures) to document the procedures used to meet the
requirements in Sec.  63.1103(e)(5). The current copy of the procedures
must be retained and available on-site at all times. Previous versions
of the standard site procedures, as applicable, must be retained for
five years.
    (2) If complying with the requirements of Sec.  63.1103(e)(5)(i)(A)
and the lower explosive limit at the time of the vessel opening exceeds
10 percent, records that identify the maintenance vent, the process
units or equipment associated with the maintenance vent, the date of
maintenance vent opening, and the lower explosive limit at the time of
the vessel opening.
    (3) If complying with the requirements of Sec.  63.1103(e)(5)(i)(B)
and either the vessel pressure at the time of the vessel opening
exceeds 5 psig or the lower explosive limit at the time of the active
purging was initiated exceeds 10 percent, records that identify the
maintenance vent, the process units or equipment associated with the
maintenance vent, the date of maintenance vent opening, the pressure of
the vessel or equipment at the time of discharge to the atmosphere and,
if applicable, the lower explosive limit of the vapors in the equipment
when active purging was initiated.
    (4) If complying with the requirements of Sec.
63.1103(e)(5)(i)(C), records used to estimate the total quantity of VOC
in the equipment and the type and size limits of equipment that contain
less than 50 pounds of VOC at the time of maintenance vent opening. For
each maintenance vent opening for which the deinventory procedures
specified in paragraph (f)(1) of this section are not followed or for
which the equipment opened exceeds the type and size limits established
in the records specified in this paragraph, records that identify the
maintenance vent, the process units or equipment associated with the
maintenance vent, the date of maintenance vent opening, and records
used to estimate the total quantity of VOC in the equipment at the time
the maintenance vent was opened to the atmosphere.
    (5) If complying with the requirements of Sec.
63.1103(e)(5)(i)(D), identification of the maintenance vent, the
process units or equipment associated with the maintenance vent,
records documenting actions taken to comply with other applicable
alternatives and why utilization of this alternative was required, the
date of maintenance vent opening, the equipment pressure and lower
explosive limit of the vapors in the equipment at the time of
discharge, an indication of whether active purging was performed and
the pressure of the equipment during the installation or removal of the
blind if active purging was used, the duration the maintenance vent was
open during the blind installation or removal process, and records used
to estimate the total quantity of VOC in the equipment at the time the
maintenance vent was opened to the atmosphere for each applicable
maintenance vent opening.
    (g) Ethylene production bypass line records. For each flow event
from a bypass line subject to the requirements in Sec.  63.1103(e)(6),
the owner or operator must maintain records sufficient to determine
whether or not the detected flow included flow requiring control. For
each flow event from a bypass line requiring control that is released
either directly to the atmosphere or to a control device not meeting
the requirements specified in Table 7 to Sec.  63.1103(e), the owner or
operator must include an estimate of the volume of gas, the
concentration of organic HAP in the gas and the resulting emissions of
organic HAP that bypassed the control

device using process knowledge and engineering estimates.
    (h) Decoking operation of ethylene cracking furnace records. For
each decoking operation of an ethylene cracking furnace subject to the
standards in Sec.  63.1103(e)(7) and (8), the owner or operator must
keep the records specified in paragraphs (h)(1) through (6) of this
section.
    (1) Records that document the day and time each inspection
specified in Sec.  63.1103(e)(7)(i) took place, the results of each
inspection, and any repairs made to correct the flame impingement.
    (2) If the owner or operator chooses to monitor the CO2
concentration during decoking as specified in Sec.  63.1103(e)(7)(ii),
then for each decoking cycle, records must be kept for all measured CO2
concentration values and the target used to indicate combustion is
complete.
    (3) If the owner or operator chooses to monitor the temperature at
the radiant tube(s) outlet during decoking as specified in Sec.
63.1103(e)(7)(iii), then for each decoking cycle, records must be kept
for all measured temperature values and the target used to indicate a
reduction in temperature of the inside of the radiant tube(s) is
necessary.
    (4) If the owner or operator chooses to purge the radiant tube(s)
with steam after decoking, but before returning the ethylene cracking
furnace back to normal operation as specified in Sec.
63.1103(e)(7)(iv), then records must be kept that document the
verification that all air is removed after each decoking cycle.
    (5) If the owner or operator chooses to apply a coating material to
the interior of the radiant tube after decoking, but before returning
the ethylene cracking furnace back to normal operation as specified in
Sec.  63.1103(e)(7)(v), then records must be kept that document when
the coating was applied.
    (6) For each decoking operation of an ethylene cracking furnace
subject to the requirements in Sec.  63.1103(e)(8), the owner or
operator must keep records that document the day and time each
inspection took place, the results of each inspection, and any repairs
made to correct any isolation issues that were identified.
    (i) Ethylene production pressure relief devices records. For each
pressure relief device subject to the pressure release management work
practice standards in Sec.  63.1107(h)(3), the owner or operator must
keep the records specified in paragraphs (i)(1) through (3) of this
section.
    (1) Records of the prevention measures implemented as required in
Sec.  63.1107(h)(3)(ii).
    (2) Records of the number of releases during each calendar year and
the number of those releases for which the root cause was determined to
be a force majeure event. Keep these records for the current calendar
year and the past five calendar years.
    (3) For each release to the atmosphere, the owner or operator must
keep the records specified in paragraphs (i)(3)(i) through (iv) of this
section.
    (i) The start and end time and date of each pressure release to the
atmosphere.
    (ii) Records of any data, assumptions, and calculations used to
estimate of the mass quantity of each organic HAP released during the
event.
    (iii) Records of the root cause analysis and corrective action
analysis conducted as required in Sec.  63.1107(h)(3)(iii), including
an identification of the affected pressure relief device, a statement
noting whether the event resulted from the same root cause(s)
identified in a previous analysis and either a description of the
recommended corrective action(s) or an explanation of why corrective
action is not necessary under Sec.  63.1107(h)(7)(i).
    (iv) For any corrective action analysis for which implementation of
corrective actions are required in Sec.  63.1107(h)(7), a description
of the corrective action(s) completed within the first 45 days
following the discharge and, for action(s) not already completed, a
schedule for implementation, including proposed commencement and
completion dates.
0
24. Section 63.1110 is amended by:
0
a. Revising paragraphs (a) introductory text and (a)(7) and (9);
0
b. Adding paragraph (a)(10);
0
c. Revising paragraphs (d)(1) introductory text and (d)(1)(i);
0
d. Adding paragraphs (d)(1)(iv) and (v);
0
e. Revising paragraph (e)(1);
0
f. Adding paragraphs (e)(4) through (8); and
0
g. Revising paragraphs (g)(1) and (2).
    The revisions and additions read as follows:

Sec.  63.1110   Reporting requirements.

    (a) Required reports. Each owner or operator of an affected source
subject to this subpart shall submit the reports listed in paragraphs
(a)(1) through (8) of this section, as applicable. Each owner or
operator of an acrylic and modacrylic fiber production affected source
or polycarbonate production affected source subject to this subpart
shall also submit the reports listed in paragraph (a)(9) of this
section in addition to the reports listed in paragraphs (a)(1) through
(8) of this section, as applicable. Beginning no later than the
compliance dates specified in Sec.  63.1102(c), each owner or operator
of an ethylene production affected source subject to this subpart shall
also submit the reports listed in paragraph (a)(10) of this section in
addition to the reports listed in paragraphs (a)(1) through (8) of this
section, as applicable.
* * * * *
    (7) Startup, Shutdown, and Malfunction Reports described in Sec.
63.1111 (except for acrylic and modacrylic fiber production affected
sources, ethylene production affected sources, and polycarbonate
production affected sources).
* * * * *
    (9) Within 60 days after the date of completing each performance
test (as defined in Sec.  63.2), the owner or operator must submit the
results of the performance tests, including any associated fuel
analyses, required by this subpart according to the methods specified
in paragraph (a)(9)(i) or (ii) of this section.
* * * * *
    (10) (i) Beginning no later than the compliance dates specified in
Sec.  63.1102(c), within 60 days after the date of completing each
performance test required by this subpart, the owner or operator must
submit the results of the performance test following the procedures
specified in paragraphs (a)(10)(i)(A) through (C) of this section.
    (A) Data collected using test methods supported by the EPA's
Electronic Reporting Tool (ERT) as listed on the EPA's ERT website
(https://www.epa.gov/electronic-reporting-air-emissions/electronic-reporting-tool-ert) at the time of the test. Submit the results of the
performance test to the EPA via CEDRI, which can be accessed through
the EPA's CDX (https://cdx.epa.gov/). The data must be submitted in a
file format generated through the use of the EPA's ERT. Alternatively,
you may submit an electronic file consistent with the extensible markup
language (XML) schema listed on the EPA's ERT website.
    (B) Data collected using test methods that are not supported by the
EPA's ERT as listed on the EPA's ERT website at the time of the test.
The results of the performance test must be included as an attachment
in the ERT or an alternate electronic file consistent with the XML
schema listed on the EPA's ERT website. Submit the ERT generated
package or alternative file to the EPA via CEDRI.
    (C) CBI. If you claim some of the information submitted under
paragraph (a)(10)(i)(A) or (B) of this section is CBI,

then the owner or operator must submit a complete file, including
information claimed to be CBI, to the EPA. The file must be generated
through the use of the EPA's ERT or an alternate electronic file
consistent with the XML schema listed on the EPA's ERT website. Submit
the file on a compact disc, flash drive, or other commonly used
electronic storage medium and clearly mark the medium as CBI. Mail the
electronic medium to U.S. EPA/OAQPS/CORE CBI Office, Attention: Group
Leader, Measurement Policy Group, MD C404-02, 4930 Old Page Rd.,
Durham, NC 27703. The same file with the CBI omitted must be submitted
to the EPA via EPA's CDX as described in paragraphs (a)(10)(i)(A) and
(B) of this section.
    (ii) Beginning no later than the compliance dates specified in
Sec.  63.1102(c), the owner or operator must submit all subsequent
Notification of Compliance Status reports required under paragraph
(a)(4) of this section to the EPA via CEDRI, which can be accessed
through EPA's CDX (https://cdx.epa.gov/). If you claim some of the
information required to be submitted via CEDRI is CBI, then submit a
complete report, including information claimed to be CBI, on a compact
disc, flash drive, or other commonly used electronic storage medium and
clearly mark the medium as CBI. Mail the electronic medium to U.S.
Environmental Protection Agency, Office of Air Quality Planning and
Standards, Sector Policies and Programs Division, U.S. EPA Mailroom
(E143-01), Attention: Ethylene Production Sector Lead, 109 T.W.
Alexander Drive, Research Triangle Park, NC 27711. The same file with
the CBI omitted must be submitted to the EPA via the EPA's CDX as
described earlier in this paragraph.
    (iii) If you are required to electronically submit a report through
CEDRI in the EPA's CDX, you may assert a claim of EPA system outage for
failure to timely comply with the reporting requirement. To assert a
claim of EPA system outage, the owner or operator must meet the
requirements outlined in paragraphs (a)(10)(iii)(A) through (G) of this
section.
    (A) The owner or operator must have been or will be precluded from
accessing CEDRI and submitting a required report within the time
prescribed due to an outage of either the EPA's CEDRI or CDX systems.
    (B) The outage must have occurred within the period of time
beginning five business days prior to the date that the submission is
due.
    (C) The outage may be planned or unplanned.
    (D) The owner or operator must submit notification to the
Administrator in writing as soon as possible following the date you
first knew, or through due diligence should have known, that the event
may cause or has caused a delay in reporting.
    (E) The owner or operator must provide to the Administrator a
written description identifying:
    (1) The date(s) and time(s) when CDX or CEDRI was accessed and the
system was unavailable;
    (2) A rationale for attributing the delay in reporting beyond the
regulatory deadline to EPA system outage;
    (3) Measures taken or to be taken to minimize the delay in
reporting; and
    (4) The date by which you propose to report, or if you have already
met the reporting requirement at the time of the notification, the date
you reported.
    (F) The decision to accept the claim of EPA system outage and allow
an extension to the reporting deadline is solely within the discretion
of the Administrator.
    (G) In any circumstance, the report must be submitted
electronically as soon as possible after the outage is resolved.
    (iv) If you are required to electronically submit a report through
CEDRI in the EPA's CDX, you may assert a claim of force majeure for
failure to timely comply with the reporting requirement. To assert a
claim of force majeure, the owner or operator must meet the
requirements outlined in paragraphs (a)(10)(iv)(A) through (E) of this
section.
    (A) You may submit a claim if a force majeure event is about to
occur, occurs, or has occurred or there are lingering effects from such
an event within the period of time beginning five business days prior
to the date the submission is due. For the purposes of this paragraph,
a force majeure event is defined as an event that will be or has been
caused by circumstances beyond the control of the affected facility,
its contractors, or any entity controlled by the affected facility that
prevents you from complying with the requirement to submit a report
electronically within the time period prescribed. Examples of such
events are acts of nature (e.g., hurricanes, earthquakes, or floods),
acts of war or terrorism, or equipment failure or safety hazard beyond
the control of the affected facility (e.g., large scale power outage).
    (B) The owner or operator must submit notification to the
Administrator in writing as soon as possible following the date you
first knew, or through due diligence should have known, that the event
may cause or has caused a delay in reporting.
    (C) The owner or operator must provide to the Administrator:
    (1) A written description of the force majeure event;
    (2) A rationale for attributing the delay in reporting beyond the
regulatory deadline to the force majeure event;
    (3) Measures taken or to be taken to minimize the delay in
reporting; and
    (4) The date by which you propose to report, or if you have already
met the reporting requirement at the time of the notification, the date
you reported.
    (D) The decision to accept the claim of force majeure and allow an
extension to the reporting deadline is solely within the discretion of
the Administrator.
    (E) In any circumstance, the reporting must occur as soon as
possible after the force majeure event occurs.
* * * * *
    (d) Notification of Compliance Status--(1) Contents. The owner or
operator shall submit a Notification of Compliance Status for each
affected source subject to this subpart containing the information
specified in paragraphs (d)(1)(i) and (ii) of this section. For
pressure relief devices subject to the requirements of Sec.
63.1107(e)(3), the owner or operator of an acrylic and modacrylic fiber
production affected source or polycarbonate production affected source
shall also submit the information listed in paragraph (d)(1)(iii) of
this section in a supplement to the Notification of Compliance Status
within 150 days after the first applicable compliance date for pressure
relief device monitoring. For flares subject to the requirements of
Sec.  63.1103(e)(4), the owner or operator of an ethylene production
affected source shall also submit the information listed in paragraph
(d)(1)(iv) of this section in a supplement to the Notification of
Compliance Status within 150 days after the first applicable compliance
date for flare monitoring. For pressure relief devices subject to the
pressure release management work practice standards in Sec.
63.1107(h)(3), the owner or operator of an ethylene production affected
source shall also submit the information listed in paragraph (d)(1)(v)
of this section in a supplement to the Notification of Compliance
Status within 150 days after the first applicable compliance date for
pressure relief device monitoring.
    (i) Except as specified in paragraphs (d)(1)(iv) and (v) of this
section, the Notification of Compliance Status shall include the
information specified in this subpart and the subparts referenced by
this subpart. Alternatively, this

information can be submitted as part of a title V permit application or
amendment.
* * * * *
    (iv) For each flare subject to the requirements in Sec.
63.1103(e)(4), in lieu of the information required in Sec.  63.987(b)
of subpart SS, the Notification of Compliance Status shall include
flare design (e.g., steam-assisted, air-assisted, non-assisted, or
pressure-assisted multi-point); all visible emission readings, heat
content determinations, flow rate measurements, and exit velocity
determinations made during the initial visible emissions demonstration
required by Sec.  63.670(h) of subpart CC, as applicable; and all
periods during the compliance determination when the pilot flame is
absent.
    (v) For pressure relief devices subject to the requirements Sec.
63.1107(h), the Notification of Compliance Status shall include the
information specified in paragraphs (d)(1)(v)(A) and (B) of this
section.
    (A) A description of the monitoring system to be implemented,
including the relief devices and process parameters to be monitored,
and a description of the alarms or other methods by which operators
will be notified of a pressure release.
    (B) A description of the prevention measures to be implemented for
each affected pressure relief device.
* * * * *
    (e) * * *
    (1) Contents. Except as specified in paragraphs (e)(4) through (8)
of this section, Periodic Reports shall include all information
specified in this subpart and subparts referenced by this subpart.
* * * * *
    (4) Ethylene production flare reports. For each flare subject to
the requirements in Sec.  63.1103(e)(4), the Periodic Report shall
include the items specified in paragraphs (e)(4)(i) through (vi) of
this section in lieu of the information required in Sec.  63.999(c)(3)
of subpart SS.
    (i) Records as specified in Sec.  63.1109(e)(2) for each 15-minute
block during which there was at least one minute when regulated
material is routed to a flare and no pilot flame is present. Include
the start and stop time and date of each 15-minute block.
    (ii) Visible emission records as specified in Sec.
63.1109(e)(3)(iv) for each period of 2 consecutive hours during which
visible emissions exceeded a total of 5 minutes.
    (iii) The periods specified in Sec.  63.1109(e)(7). Indicate the
date and start time for the period, and the net heating value operating
parameter(s) determined following the methods in Sec.  63.670(k)
through (n) of subpart CC as applicable.
    (iv) For flaring events meeting the criteria in Sec.  63.670(o)(3)
of subpart CC:
    (A) The start and stop time and date of the flaring event.
    (B) The length of time that emissions were visible from the flare
during the event.
    (C) For steam-assisted, air-assisted, and non-assisted flares, the
periods of time that the flare tip velocity exceeds the maximum flare
tip velocity determined using the methods in Sec.  63.670(d)(2) of
subpart CC and the maximum 15-minute block average flare tip velocity
recorded during the event.
    (D) Results of the root cause and corrective actions analysis
completed during the reporting period, including the corrective actions
implemented during the reporting period and, if applicable, the
implementation schedule for planned corrective actions to be
implemented subsequent to the reporting period.
    (v) For pressure-assisted multi-point flares, the periods of time
when the pressure monitor(s) on the main flare header show the burners
operating outside the range of the manufacturer's specifications.
    (vi) For pressure-assisted multi-point flares, the periods of time
when the staging valve position indicator monitoring system indicates a
stage should not be in operation and is or when a stage should be in
operation and is not.
    (5) Ethylene production maintenance vent reports. For maintenance
vents subject to the requirements Sec.  63.1103(e)(5), Periodic Reports
must include the information specified in paragraphs (e)(5)(i) through
(iv) of this section for any release exceeding the applicable limits in
Sec.  63.1103(e)(5)(i). For the purposes of this reporting requirement,
owners or operators complying with Sec.  63.1103(e)(5)(i)(D) must
report each venting event conducted under those provisions and include
an explanation for each event as to why utilization of this alternative
was required.
    (i) Identification of the maintenance vent and the equipment served
by the maintenance vent.
    (ii) The date and time the maintenance vent was opened to the
atmosphere.
    (iii) The lower explosive limit, vessel pressure, or mass of VOC in
the equipment, as applicable, at the start of atmospheric venting. If
the 5 psig vessel pressure option in Sec.  63.1103(e)(5)(i)(B) was used
and active purging was initiated while the lower explosive limit was 10
percent or greater, also include the lower explosive limit of the
vapors at the time active purging was initiated.
    (iv) An estimate of the mass of organic HAP released during the
entire atmospheric venting event.
    (6) Bypass line reports. For bypass lines subject to the
requirements in Sec.  63.1103(e)(6), Periodic Reports must include the
date, time, duration, estimate of the volume of gas, the concentration
of organic HAP in the gas and the resulting mass emissions of organic
HAP that bypass a control device. For periods when the flow indicator
is not operating, report the date, time, and duration.
    (7) Decoking operation reports. For decoking operations of an
ethylene cracking furnace subject to the requirements in Sec.
63.1103(e)(7) and (8), Periodic Reports must include the information
specified in paragraphs (e)(7)(i) and (ii) of this section.
    (i) For each control measure selected to minimize coke combustion
emissions as specified in Sec.  63.1103(e)(7)(ii) through (v), report
instances where the control measures were not followed.
    (ii) Report instances where an isolation valve inspection was not
conducted according to the procedures specified in Sec.  63.1103(e)(8).
    (8) Ethylene production pressure relief devices reports. For
pressure relief devices subject to the requirements Sec.  63.1107(h),
Periodic Reports must include the information specified in paragraphs
(e)(8)(i) through (iii) of this section.
    (i) For pressure relief devices in organic HAP gas or vapor
service, pursuant to Sec.  63.1107(h)(1), report any instrument reading
of 500 ppm or greater.
    (ii) For pressure relief devices in organic HAP gas or vapor
service subject to Sec.  63.1107(h)(2), report confirmation that any
monitoring required to be done during the reporting period to show
compliance was conducted.
    (iii) For pressure relief devices in organic HAP service subject to
Sec.  63.1107(h)(3), report each pressure release to the atmosphere,
including duration of the pressure release and estimate of the mass
quantity of each organic HAP released; the results of any root cause
analysis and corrective action analysis completed during the reporting
period, including the corrective actions implemented during the
reporting period; and, if applicable, the implementation schedule for
planned corrective actions to be implemented subsequent to the
reporting period.
* * * * *

    (g) Report and notification submission--(1) Submission to the
Environmental Protection Agency. All reports and notifications required
under this subpart shall be sent to the appropriate EPA Regional Office
and to the delegated State authority, except that request for
permission to use an alternative means of emission limitation as
provided for in Sec.  63.1113 shall be submitted to the Director of the
EPA Office of Air Quality Planning and Standards, U.S. Environmental
Protection Agency, MD-10, Research Triangle Park, North Carolina,
27711. The EPA Regional Office may waive the requirement to submit a
copy of any reports or notifications at its discretion, except that
electronic reporting to CEDRI cannot be waived, and as such, compliance
with the provisions of this paragraph does not relieve owners or
operators of affected facilities of the requirement to submit
electronic reports required in this subpart to the EPA.
    (2) Submission of copies. If any State requires a notice that
contains all the information required in a report or notification
listed in this subpart, an owner or operator may send the appropriate
EPA Regional Office a copy of the report or notification sent to the
State to satisfy the requirements of this subpart for that report or
notification, except that performance test reports and performance
evaluation reports required under paragraph (a)(10) of this section
must be submitted to CEDRI in the format specified in that paragraph.
* * * * *
0
25. Section 63.1111 is amended by revising paragraphs (a) introductory
text, (b) introductory text, and (c) introductory text to read as
follows:

Sec.  63.1111   Startup, shutdown, and malfunction.

    (a) Startup, shutdown, and malfunction plan. Before [date 3 years
after date of publication of final rule in the Federal Register], the
requirements of this paragraph (a) apply to all affected sources except
for acrylic and modacrylic fiber production affected sources and
polycarbonate production affected sources. On and after [date 3 years
after date of publication of final rule in the Federal Register], the
requirements of this paragraph (a) apply to all affected sources except
for acrylic and modacrylic fiber production affected sources, ethylene
production affected sources, and polycarbonate production affected
sources.
* * * * *
    (b) Startup, shutdown, and malfunction reporting requirements.
Before [date 3 years after date of publication of final rule in the
Federal Register], the requirements of this paragraph (b) apply to all
affected sources except for acrylic and modacrylic fiber production
affected sources and polycarbonate production affected sources. On and
after [date 3 years after date of publication of final rule in the
Federal Register], the requirements of this paragraph (b) apply to all
affected sources except for acrylic and modacrylic fiber production
affected sources, ethylene production affected sources, and
polycarbonate production affected sources.
* * * * *
    (c) Malfunction recordkeeping and reporting. Before [date 3 years
after date of publication of final rule in the Federal Register], the
requirements of this paragraph (c) apply only to acrylic and modacrylic
fiber production affected sources and polycarbonate production affected
sources. On and after [date 3 years after date of publication of final
rule in the Federal Register], the requirements of this paragraph (c)
apply only to acrylic and modacrylic fiber production affected sources,
ethylene production affected sources, and polycarbonate production
affected sources.
* * * * *
0
26. Section 63.1112 is amended by revising paragraph (d)(2) to read as
follows:

Sec.  63.1112   Extension of compliance, and performance test,
monitoring, recordkeeping and reporting waivers and alternatives.

* * * * *
    (d) * * *
    (2) Recordkeeping or reporting requirements may be waived upon
written application to the Administrator if, in the Administrator's
judgment, the affected source is achieving the relevant standard(s), or
the source is operating under an extension of compliance, or the owner
or operator has requested an extension of compliance and the
Administrator is still considering that request. Electronic reporting
to the EPA cannot be waived, and as such, compliance with the
provisions of this paragraph does not relieve owners or operators of
affected facilities of the requirement to submit electronic reports
required in this subpart to the EPA.
* * * * *
0
27. Section 63.1113 is amended by revising paragraph (a)(2) to read as
follows:

Sec.  63.1113   Procedures for approval of alternative means of
emission limitation.

    (a) * * *
    (2) Any such notice shall be published only after public notice and
an opportunity for public comment.
* * * * *
0
28. Section 63.1114 is amended by revising paragraph (b) introductory
text and adding paragraph (b)(6) to read as follows:

Sec.  63.1114   Implementation and enforcement.

* * * * *
    (b) In delegating implementation and enforcement authority of this
subpart to a State, local, or tribal agency under 40 CFR part 63,
subpart E, the authorities contained in paragraphs (b)(1) through (6)
of this section are retained by the EPA Administrator and are not
transferred to the State, local, or tribal agency.
* * * * *
    (6) Approval of an alternative to any electronic reporting to EPA
required by this subpart.

[FR Doc. 2019-19875 Filed 10-8-19; 8:45 am]
BILLING CODE 6560-50-P