[Federal Register Volume 86, Number 24 (Monday, February 8, 2021)]
[Notices]
[Pages 8618-8622]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-02518]
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ENVIRONMENTAL PROTECTION AGENCY
[EPA-HQ-OAR-2020-0599; FRL-10017-95-OAR]
Notice of Request for Approval of Alternative Means of Emission
Limitation
AGENCY: Environmental Protection Agency (EPA).
ACTION: Notice and request for comments.
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SUMMARY: This action provides public notice and solicits comment on a
request by Rohm and Haas Chemicals LLC, a subsidiary of The Dow
Chemical Company (Dow), under the Clean Air Act (CAA), for an
alternative means of emission limitation (AMEL) for the Standards of
Performance for Volatile Organic Liquid Storage Vessels, that would
apply to a proposed new vinyl acetate bulk storage tank to be used at
its chemical plant in Kankakee, Illinois.
DATES: Comments must be received on or before March 25, 2021.
Public hearing: If anyone contacts us requesting a public hearing
on or before February 16, 2021, the EPA will hold a virtual public
hearing on February 23, 2021. Please refer to the SUPPLEMENTARY
INFORMATION section for additional information on the public hearing.
ADDRESSES: You may send comments, identified by Docket ID No. EPA-HQ-
OAR-2020-0599, by any of the following methods:
Federal eRulemaking Portal: https://www.regulations.gov/
(our preferred method). Follow the online instructions for submitting
comments.
Email: a-and-r-docket@epa.gov. Include Docket ID No. EPA-
HQ-OAR-2020-0599 in the subject line of the message.
Fax: (202) 566-9744. Attention Docket ID No. EPA-HQ-OAR-
2020-0599.
[[Page 8619]]
Mail: U.S. Environmental Protection Agency, EPA Docket
Center, Docket ID No. EPA-HQ-OAR-2020-0599, Mail Code 28221T, 1200
Pennsylvania Avenue NW, Washington, DC 20460.
Hand Delivery or Courier (by scheduled appointment only):
EPA Docket Center, WJC West Building, Room 3334, 1301 Constitution
Avenue NW, Washington, DC 20004. The Docket Center's hours of operation
are 8:30 a.m.-4:30 p.m., Monday - Friday (except Federal holidays).
Instructions. All submissions received must include the Docket ID
No. for this rulemaking. Comments received may be posted without change
to https://www.regulations.gov/, including any personal information
provided. For detailed instructions on sending comments and additional
information on the rulemaking process, see the SUPPLEMENTARY
INFORMATION section of this document. Out of an abundance of caution
for members of the public and our staff, the EPA Docket Center and
Reading Room are closed to the public, with limited exceptions, to
reduce the risk of transmitting COVID-19. Our Docket Center staff will
continue to provide remote customer service via email, phone, and
webform. We encourage the public to submit comments via https://www.regulations.gov/ or email, as there may be a delay in processing
mail and faxes. Hand deliveries and couriers may be received by
scheduled appointment only. For further information on EPA Docket
Center services and the current status, please visit us online at
https://www.epa.gov/dockets.
FOR FURTHER INFORMATION CONTACT: For questions about this action,
contact Ms. Angela Carey, Sector Policies and Programs Division (E143-
01), Office of Air Quality Planning and Standards (OAQPS), U.S.
Environmental Protection Agency, Research Triangle Park, North Carolina
27711; telephone number: (919) 541-2187; fax number: (919) 541-0516;
and email address: carey.angela@epa.gov.
SUPPLEMENTARY INFORMATION:
Participation in virtual public hearing. Please note that the EPA
is deviating from its typical approach for public hearings because the
President has declared a national emergency. Due to the current Centers
for Disease Control and Prevention (CDC) recommendations, as well as
state and local orders for social distancing to limit the spread of
COVID-19, the EPA cannot hold in-person public meetings at this time.
To request a virtual public hearing, contact the public hearing
team at (888) 372-8699 or by email at SPPDpublichearing@epa.gov. If
requested, the virtual hearing will be held on February 23, 2021. The
hearing will convene at 9:00 a.m. Eastern Time (ET) and will conclude
at 3:00 p.m. ET. The EPA may close a session 15 minutes after the last
pre-registered speaker has testified if there are no additional
speakers. The EPA will announce further details at https://www.epa.gov/stationary-sources-air-pollution/volatile-organic-liquid-storage-vessels-including-petroleum-storage.
If a public hearing is requested, the EPA will begin pre-
registering speakers for the hearing upon publication of this document
in the Federal Register. To register to speak at the virtual hearing,
please use the online registration form available at https://www.epa.gov/stationary-sources-air-pollution/volatile-organic-liquid-storage-vessels-including-petroleum-storage or contact the public
hearing team at (888) 372-8699 or by email at
SPPDpublichearing@epa.gov. The last day to pre-register to speak at the
hearing will be February 22, 2021. Prior to the hearing, the EPA will
post a general agenda that will list pre-registered speakers in
approximate order at: https://www.epa.gov/stationary-sources-air-pollution/volatile-organic-liquid-storage-vessels-including-petroleum-storage.
The EPA will make every effort to follow the schedule as closely as
possible on the day of the hearing; however, please plan for the
hearing to run either ahead of schedule or behind schedule.
Each commenter will have 5 minutes to provide oral testimony. The
EPA encourages commenters to provide the EPA with a copy of their oral
testimony electronically (via email) by emailing it to Angela Carey,
email address: carey.angela@epa.gov. The EPA also recommends submitting
the text of your oral testimony as written comments to the rulemaking
docket.
The EPA may ask clarifying questions during the oral presentations
but will not respond to the presentations at that time. Written
statements and supporting information submitted during the comment
period will be considered with the same weight as oral testimony and
supporting information presented at the public hearing.
Please note that any updates made to any aspect of the hearing will
be posted online at https://www.epa.gov/stationary-sources-air-pollution/volatile-organic-liquid-storage-vessels-including-petroleum-storage. While the EPA expects the hearing to go forward as set forth
above, if requested, please monitor our website or contact the public
hearing team at (888) 372-8699 or by email at SPPDpublichearing@epa.gov
to determine if there are any updates. The EPA does not intend to
publish a document in the Federal Register announcing updates.
If you require the services of a translator or a special
accommodation such as audio description, please pre-register for the
hearing with the public hearing team at (888) 372-8699 or by email at
SPPDpublichearing@epa.gov and describe your needs by February 16, 2021.
The EPA may not be able to arrange accommodations without advance
notice.
Docket. The EPA has established a docket for this rulemaking under
Docket ID No. EPA-HQ-OAR-2020-0599. All documents in the docket are
listed in Regulations.gov. Although listed, some information is not
publicly available, e.g., Confidential Business Information (CBI) or
other information whose disclosure is restricted by statute. Certain
other material, such as copyrighted material, is not placed on the
internet and will be publicly available only in hard copy. With the
exception of such material, publicly available docket materials are
available electronically in Regulations.gov.
Instructions. Direct your comments to Docket ID No. EPA-HQ-OAR-
2020-0599. The EPA's policy is that all comments received will be
included in the public docket without change and may be made available
online at https://www.regulations.gov/, including any personal
information provided, unless the comment includes information claimed
to be CBI or other information whose disclosure is restricted by
statute. Do not submit electronically any information you consider to
be CBI or other information whose disclosure is restricted by statue.
This type of information should be submitted by mail as discussed
below.
The EPA may publish any comment received to its public docket.
Multimedia submissions (audio, video, etc.) must be accompanied by a
written comment. The written comment is considered the official comment
and should include discussion of all points you wish to make. The EPA
will generally not consider comments or comment contents located
outside of the primary submission (i.e., on the Web, cloud, or other
file sharing system). For additional submission methods, the full EPA
public comment policy, information about CBI or multimedia submissions,
and general guidance on making effective comments, please visit
[[Page 8620]]
https://www.epa.gov/dockets/commenting-epa-dockets.
The https://www.regulations.gov/ website allows you to submit your
comment anonymously, which means the EPA will not know your identity or
contact information unless you provide it in the body of your comment.
If you send an email comment directly to the EPA without going through
https://www.regulations.gov/, your email address will be automatically
captured and included as part of the comment that is placed in the
public docket and made available on the internet. If you submit an
electronic comment, the EPA recommends that you include your name and
other contact information in the body of your comment and with any
digital storage media you submit. If the EPA cannot read your comment
due to technical difficulties and cannot contact you for clarification,
the EPA may not be able to consider your comment. Electronic files
should not include special characters or any form of encryption and be
free of any defects or viruses. For additional information about the
EPA's public docket, visit the EPA Docket Center homepage at https://www.epa.gov/dockets.
The EPA is temporarily suspending its Docket Center and Reading
Room for public visitors, with limited exceptions, to reduce the risk
of transmitting COVID-19. Our Docket Center staff will continue to
provide remote customer service via email, phone, and webform. We
encourage the public to submit comments via https://www.regulations.gov/ as there may be a delay in processing mail and
faxes. Hand deliveries or couriers will be received by scheduled
appointment only. For further information and updates on EPA Docket
Center services, please visit us online at https://www.epa.gov/dockets.
The EPA continues to carefully and continuously monitor information
from the CDC, local area health departments, and our Federal partners
so that we can respond rapidly as conditions change regarding COVID-19.
Submitting CBI. Do not submit information containing CBI to the EPA
through https://www.regulations.gov/ or email. Clearly mark the part or
all of the information that you claim to be CBI. For CBI information on
any digital storage media that you mail to the EPA, mark the outside of
the digital storage media as CBI and then identify electronically
within the digital storage media the specific information that is
claimed as CBI. In addition to one complete version of the comments
that includes information claimed as CBI, you must submit a copy of the
comments that does not contain the information claimed as CBI directly
to the public docket through the procedures outlined in Instructions
above. If you submit any digital storage media that does not contain
CBI, mark the outside of the digital storage media clearly that it does
not contain CBI. Information not marked as CBI will be included in the
public docket and the EPA's electronic public docket without prior
notice. Information marked as CBI will not be disclosed except in
accordance with procedures set forth in 40 Code of Federal Regulations
(CFR) part 2. Send or deliver information identified as CBI only to the
following address: OAQPS Document Control Officer (C404-02), OAQPS,
U.S. Environmental Protection Agency, Research Triangle Park, North
Carolina 27711, Attention Docket ID No. EPA-HQ-OAR-2020-0599. Note that
written comments containing CBI and submitted by mail may be delayed
and no hand deliveries will be accepted.
Acronyms and abbreviations. We use multiple acronyms and terms in
this document. While this list may not be exhaustive, to ease the
reading of this document and for reference purposes, the EPA defines
the following terms and acronyms here:
AMEL alternative means of emission limitation
CAA Clean Air Act
CBI Confidential Business Information
CFR Code of Federal Regulations
EPA Environmental Protection Agency
HAP hazardous air pollutant(s)
MTVP maximum true vapor pressure
NESHAP national emission standards for hazardous air pollutants
NSPS new source performance standards
OAQPS Office of Air Quality Planning and Standards
PRD pressure relief device
PRV pressure relief valve
scf standard cubic feet
VAM vinyl acetate monomer
VOC volatile organic compound(s)
Organization of this document. The information in this document is
organized as follows:
I. Background
II. Request for AMEL
III. AMEL for the Rohm and Haas Chemicals LLC facility
IV. Request for Comments
I. Background
Rohm and Haas is requesting an AMEL for the Standards of
Performance for Volatile Organic Liquid Storage Vessels, 40 CFR part
60, subpart Kb (40 CFR 60.112b), that would apply to a proposed new
vinyl acetate bulk storage tank to be used at its chemical plant in
Kankakee, Illinois. In this Federal Register document, the EPA is
soliciting comment on all aspects of this AMEL request, including the
corresponding operating conditions that would demonstrate that the
requested AMEL would achieve a reduction in emissions of volatile
organic compounds (VOC) at least equivalent to the reduction in
emissions required by the new source performance standards (NSPS) at 40
CFR 60.112b. The AMEL request states that a new storage tank will be
installed at the site to replace the existing vinyl acetate monomer
(VAM) (CAS 108-05-4) tank (TK-72). Such tank functions as a buffer for
the facility's manufacturing needs between bulk deliveries of VAM. The
facility receives VAM predominantly by railcar, but occasionally some
VAM is supplied via tank truck. Due to the facility's demand for VAM,
the tank experiences a significant number of turnovers per year.
Because the new storage tank will be used to store VAM, a volatile
organic liquid as defined at 40 CFR 60.111b, it is subject to NSPS
subpart Kb. Rohm and Haas is submitting this AMEL request because the
proposed tank design does not contain either an external or internal
floating roof or a closed vent system and control device that are
specified by 40 CFR 60.112b; rather, it is designed to reduce emissions
through vapor balancing and pressure containment. Rohm and Haas states
that breathing losses will not occur from the proposed new tank because
there are no vents and the tank can withstand pressures up to 9 pounds
per square inch gauge (psig) before activation of a pressure relief
device (PRD). Rohm and Haas further states that the proposed system
will control emissions from working losses by complying with the
requirements associated with the use of a vapor balancing system in the
National Emission Standards for Organic Hazardous Air Pollutants
(NESHAP) from the Synthetic Organic Chemical Manufacturing Industry for
Process Vents, Storage Vessels, Transfer Operations, and Wastewater, 40
CFR part 63, subpart G.\1\
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\1\ Rohm and Haas states in its application that ``[c]ompliance
with 40 CFR 119(g) will address both working losses and breathing
losses from this tank.'' Rohm and Haas letter at 1. To the extent
that Rohm and Haas is suggesting 40 CFR 119(g) addresses breathing
losses, we disagree; rather, as discussed in the prior sentence,
breathing losses are addressed through pressure containment.
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The VOC standards at 40 CFR 60.112b were established as work
practice standards pursuant to CAA section 111(h)(1). For standards
established according to that provision, CAA section 111(h)(3) allows
the EPA to
[[Page 8621]]
permit the use of an AMEL by a source if, after notice and opportunity
for public hearing, it is established to the Administrator's
satisfaction that such AMEL will achieve emissions reductions at least
equivalent to the reductions required under the applicable CAA section
111(h)(1) standards. NSPS subpart Kb also includes specific regulatory
provisions (i.e., 40 CFR 114b) allowing sources to request an AMEL for
the VOC standards at 40 CFR 112b.
Rohm and Haas included in its AMEL application information to
demonstrate that the proposed bulk storage tank, through its vapor
balancing system and pressure containment design, will achieve a
reduction in emissions at least equivalent to the reduction in
emissions achieved by the VOC standards at 40 CFR 60.112b. Rohm and
Haas's AMEL request was submitted on June 17, 2020. For Rohm and Haas's
AMEL request, including any supporting materials Rohm and Haas
submitted, see Docket ID No. EPA-HQ-OAR-2020-0599.
II. Request for AMEL
Pursuant to 40 CFR 60.114b, Rohm and Haas is seeking an AMEL for
the VOC standards set forth at 40 CFR 60.112b for a proposed bulk
storage tank to be used at its chemical plant in Kankakee, Illinois.
Rohm and Haas's application includes an engineering evaluation to
support its request, as required by 40 CFR 60.114b(c).\2\ We,
therefore, deem this AMEL application by Rohm and Haas to be complete.
Rohm and Haas submitted this AMEL request because the proposed tank
design does not contain either an external or internal floating roof or
a closed vent system and control device that are specified by 40 CFR
60.112b. Rohm and Haas is proposing an alternative tank design that
will eliminate breathing losses by storing material in a pressure tank
and control working losses using vapor balancing.
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\2\ As explained in the preamble to the proposed NSPS subpart
Kb, equivalence ``could be demonstrated by a number of methods
including: (1) An actual emissions test that uses a full size or
scale-model storage vessel that accurately collects and measures all
VOC emissions from the storage vessel, or (2) an engineering
evaluation as approved by the Administrator.'' (Emphasis added). 49
FR 29698, 29706 (July 23, 1984).
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The information provided by Rohm and Haas states that the proposed
new tank is an American Petroleum Institute (API)-620, 160,000 gallon
(approximately 600 cubic meter) fixed-roof storage tank used for the
storage of VAM. An API-620 specification tank is designed to contain
pressures up to 15 psig. According to Rohm and Haas, breathing losses
will not occur because there are no vents, and the tank can withstand
pressures up to 9 psig before activation of a PRD. Rohm and Haas's
engineering evaluation indicates the tank is not expected to exceed
these pressures. The published vapor pressure of VAM is 1.72 pounds per
square inch (psi) (89.1 millimeters of mercury) at 68 degrees
Fahrenheit ([deg]F); however, the EPA defines the maximum true vapor
pressure (MTVP) as the vapor pressure of a specific material at the
maximum average monthly temperature, which is 74.7 [deg]F and occurs
during the month of July in the Kankakee locale. At the specified
maximum temperature, using the Antoine equation and appropriate
coefficients, the MTVP of vinyl acetate was estimated to be 2.09 psi,
which is well below the 9 psig rupture disk and PRD settings for the
proposed tank. Therefore, PRDs will be designed to open only in
emergency instances (i.e., external fire or uncontrolled
polymerization).
The PRDs will consist of two pressure relief assemblies. The
primary assembly will include in series a rupture disk, a pressure
indicator, and a pressure relief valve (PRV). The rupture disk and PRV
will both be set at 9 psig. The purpose of this assembly is to provide
early controlled remediation in case of fire/polymerization/over-
pressurization. Because the PRV is downstream of the rupture disk, the
design will allow the assembly to return to its closed position once
the pressure release event ends. The secondary pressure relief assembly
will consist of a rupture disk set at 13 psig, followed by a pressure
indicator. This assembly is designed to contain extreme fire/
polymerization in the event the first assembly is unable to do so. In
such event, the rupture disk will vent to protect against vessel
rupture.
To demonstrate that the PRV does not open, the tank vapor space
pressure and the space between the rupture disk and PRV will be
continuously monitored for pressure and recorded. If a release occurs,
a new rupture disk will be installed, and the corresponding PRV will be
reseated properly. This PRV will be checked quarterly to ensure the PRV
is seated properly using EPA Method 21 following 40 CFR
63.119(g)(5)(i), part of the vapor balancing provisions in NESHAP
subpart G (40 CFR 63.119(g)). In the event that a PRV opens, this would
qualify as an excess emission event and must be reported on the
semiannual compliance report. If designed and operated as described
above, there will not be any emission events, therefore, this
alternative is equivalent with the standard.
No PRD on the storage tank, railcar, or tank truck is expected to
open during loading or as a result of diurnal temperature changes
(breathing losses). During filling of the tank, any displaced vapors
will be collected and routed through the vapor balancing line. There
are no PRDs associated with the vapor balancing line itself, and the
PRDs on the railcar are set at 165 psig and tank trucks are set between
25 to 50 psig to prevent an opening of a PRD while the vessel is being
unloaded.
The tank will also be equipped with a vacuum relief system that
will be used when VAM is transferred to the process area, and both the
vacuum relief system and a vapor balance system will be used when VAM
is added to the tank. The vacuum relief system only serves to allow
ambient air into the tank's head space to equalize pressure decreases
as material is removed. The vapor balance system operation collects and
contains vapors discharged during tank filling operations.
In its request, Rohm and Haas states that the proposed tank would
comply with the vapor balancing requirements in NESHAP subpart G, 40
CFR 63.119(g) to confirm proper vapor balancing.
The facility unloads VAM from tank trucks or railcars, which are
connected to the tank system's vapor balance system. The Kankakee
facility's bulk unloading Standard Operating Procedure requires that
each U.S. Department of Transportation (DOT)-specification tank truck
or railcar containing vinyl acetate be inspected to verify that its DOT
qualification inspections and tests are current. VAM will be unloaded
only from tank trucks or railcars which are connected to the tank
system's vapor balance system.
The site will require that railcars and tank trucks that deliver
VAM will be reloaded or cleaned only at facilities which utilize the
control techniques specified at 40 CFR 63.119(g)(6)(i) or (ii) of
NESHAP subpart G. The site will mandate that each railcar or tank truck
is connected to a closed-vent system with a control device that reduces
inlet emissions of HAP by 95 percent by weight or greater.
The Kankakee facility will request, maintain, and submit to the
Administrator a written certification from the VAM supplier that each
supplier's current reloading or cleaning facility meets the above
requirements. If the supplier(s) of the VAM changes in the future, the
Kankakee facility will obtain a written certification that the new
supplier(s) meet these requirements.
Rohm and Haas believes that this tank, as designed and operated,
will
[[Page 8622]]
result in a reduction in emissions equivalent to or better than the
amount achieved by the VOC standards set forth in 40 CFR 60.112b of
NSPS subpart Kb. Rohm and Haas, therefore, asks that the EPA approve
this AMEL request.
III. AMEL for the Rohm and Haas Chemicals LLC Facility
Based upon our review of the AMEL request, we believe that, by
complying with the operating conditions specified below, the proposed
new tank at Dow's Rohm and Haas Chemicals LLC facility will achieve
emission reductions at least equivalent to reduction in emissions
required by NSPS subpart Kb, 40 CFR 60.112b. We are seeking the
public's input on this request. Specifically, the EPA seeks the
public's input on the conditions specified in this document in the
following paragraphs.
(1) No PRD on the storage tank, or on the railcar or tank truck,
shall open during loading or as a result of diurnal temperature changes
(breathing losses).
(2) Both PRDs on the storage tank must be set to release at no less
than 9 psig at all times. Any release from a PRD as indicated by
pressure reading greater than 9 psig is an excess emissions event. To
demonstrate that the PRD does not open, the tank vapor space pressure
and the space between the rupture disk and PRD will be continuously
monitored for pressure and recorded. If a release occurs, the tank must
follow 40 CFR 63.165(d)(2).
(3) Each of the PRDs and components of the vapor collection system
on the tank must be monitored on a quarterly basis, using EPA Method
21. An instrument reading of 500 parts per million by volume or greater
is an excess emissions event.
(4) VAM must be transferred from either railcars or truck trailers
via welded steel piping into the new bulk storage tank. The tank must
be equipped with a welded steel vapor balance line that returns
displaced vinyl acetate vapors from the headspace within the tank to
the railcar or tank truck during tank filling operations. The vapor
balance line must be hard piped from the tank, crossing a pipe bridge,
before terminating at the off-loading station. The tank vapor balance
line must not contain any PRDs or release points. Displaced vapors must
be transferred to a vapor return fitting on the offloading bulk vehicle
through a hose from the offloading station. Both the transfer hoses and
the vapor balance return line must incorporate dry-disconnect fittings
to prevent vapor discharge to the atmosphere when the line is not
connected. Tank trucks and railcars must have a current certification
in accordance with the DOT pressure test requirements of 49 CFR part
180 for tank trucks and 49 CFR 173.31 for railcars. Railcars, tank
trucks, or barges that deliver VAM to a storage tank must be reloaded
or cleaned at a facility that utilizes the control techniques specified
in paragraph (4)(a) or (b).
(a) The railcar, tank truck, or barge must be connected to a
closed-vent system with a control device that reduces inlet emissions
of VAM by 95 percent by weight or greater.
(b) A vapor balancing system designed and operated to collect
organic VAM vapor displaced from the tank truck or railcar during
reloading must be used to route the collected HAP vapor to the storage
tank from which the liquid being transferred originated.
(5) Rohm and Haas must submit to the Administrator a written
certification that the reloading or cleaning facility meets the
requirements of paragraph 4; and the requirements for closed vent
system and control device specified at 40 CFR 63.119 through 63.123.
The notification and reporting requirements at 40 CFR 63.122 do not
apply to the owner or operator of the offsite cleaning or reloading
facility.
(6) Recordkeeping requirements.
(a) The facility must keep a record of the equipment to be used and
the procedures to be followed when reloading the railcar, tank truck,
or barge and displacing vapors to the storage tank from which the
liquid originates, as well as a record of all components of the PRDs,
including PRVs and rupture disks.
(b) Records must be kept as long as the storage vessel is in
operation.
(7) Reporting requirements. The facility must submit excess
emissions and monitoring systems performance reports to the
Administrator semiannually. All reports must be postmarked by the 30th
day following the end of each 6-month period. Written reports of excess
emissions must include the following information:
(a) The date and time of commencement and completion of each time
period of excess emissions. The process operating time during the
reporting period.
(b) The date and time identifying each period during which the
continuous monitoring system was inoperative except for zero and span
checks and the nature of the system repairs or adjustments.
(c) The report must include a list of the affected sources or
equipment, an estimate of the volume of VAM emitted, and a description
of the method used to estimate the emissions.
(d) When the continuous pressure monitoring systems have not been
inoperative, repaired, or adjusted, such information shall be stated in
the report.
IV. Request for Comments
We solicit comments on all aspects of Rohm and Haas's requests for
approval of an AMEL for these new requirements to be used to comply
with the applicable standards. We specifically seek comment regarding
whether or not the operating requirements listed in section III above
will achieve emission reductions at least equivalent to emissions being
controlled by complying with the applicable requirements in the 40 CFR
part 60, subpart Kb, Standards of Performance for Volatile Organic
Liquid Storage Vessels requirements in 40 CFR 60.112b.
Dated: December 8, 2020.
Panagiotis Tsirigotis,
Director, Office of Air Quality Planning and Standards.
[FR Doc. 2021-02518 Filed 2-5-21; 8:45 am]
BILLING CODE 6560-50-P