because EPA does not believe the environmental health or safety risks
addressed by this action present a disproportionate risk to children.
This rule restricts the use of certain substitutes that have greater
overall risks for human health and the environment, primarily due to
their high GWP. The reduction in GHG emissions would provide climate
benefits for all people, including benefits for children and future
generations. The risk screens are in the docket for this
rulemaking.230 231 232 233 234
---------------------------------------------------------------------------

    \230\ ICF, 2016c. Significant New Alternatives Policy Program:
Refrigeration and Air Conditioning Sector Risk Screen on Substitutes
in Water Coolers Substitute: Propane (R-290).
    \231\ ICF, 2016d. Significant New Alternatives Policy Program:
Refrigeration and Air Conditioning Sector Risk Screen on Substitutes
in Very Low Temperature Refrigeration Substitute: Propane (R-290)
and Ethane (R-170).
    \232\ ICF, 2016e. Significant New Alternatives Policy Program:
Refrigeration and Air Conditioning Sector Risk Screen on Substitutes
in Commercial Ice Machines Substitute: Propane (R-290).
    \233\ ICF, 2016f. Significant New Alternatives Policy Program.
Refrigeration and Air Conditioning Sector Risk Screen on Substitutes
in Residential and Light Commercial Air Conditioning and Heat Pumps.
Substitute: R-443A.
    \234\ ICF, 2016g. Significant New Alternatives Policy Program.
Refrigeration and Air Conditioning Sector Risk Screen on Substitutes
in Chillers and Cold Storage Warehouses. Substitute: Propylene (R-
1270).
---------------------------------------------------------------------------

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

    This action is not a ``significant energy action'' because it is
not likely to have a significant adverse effect on the supply,
distribution or use of energy. For the end-uses that are related to
energy effects such as refrigeration and AC, a number of alternatives
are available to replace those refrigerants that are listed as
unacceptable in this action; many of the alternatives are as energy
efficient or more energy efficient than the substitutes being listed as
unacceptable. Thus, we have concluded that this rule is not likely to
have any adverse energy effects.

I. National Technology Transfer and Advancement Act (NTTAA) and 1 CFR
Part 51

    This action involves technical standards. EPA is using standards
from UL in the use conditions for propane and standards from SAE for
HFO-1234yf. Additionally, EPA is incorporating by reference a standard
from SAE that EPA already requires in a use condition for HFC-152a in
MVAC. These use conditions will ensure that these new substitutes for
very low temperature refrigeration equipment, commercial ice machines,
and water coolers, do not present significantly greater risk to human
health or the environment than other alternatives.
    EPA is incorporating by reference portions of current editions of
the UL Standard 399, ``Standard for Drinking-Water Coolers''; UL
Standard 471, ``Standard for Commercial Refrigerators and Freezers'';
and UL Standard 563, ``Standard for Ice Makers'', which includes
requirements for the safe use of refrigerants. Specifically, these
standards are:
    1. Supplement SB to UL Standard 399: Requirements for Drinking
Water Coolers Employing A Flammable Refrigerant in the Refrigerating
System (7th Edition, August 22, 2008). This document establishes
requirements for self-contained drinking water coolers, including those
supplying cold and/or hot water and those employing flammable
refrigerants. The standard is available at http://ulstandards.ul.com/standard/?id=399, and may be purchased by mail at: COMM 2000, 151
Eastern Avenue, Bensenville, IL 60106; Email<EMAIL_ADDRESS>
Telephone: 1-888-853-3503 in the U.S. or Canada (other countries dial
+1-415-352-2168); Internet address: http://ulstandards.ul.com/ or
www.comm-2000.com. The cost of UL 399 is $798 for an electronic copy
and $998 for hardcopy. UL also offers a subscription service to the
Standards Certification Customer Library (SCCL) that allows unlimited
access to their standards and related documents. The cost of obtaining
this standard is not a significant financial burden for equipment
manufacturers and purchase is not required for those selling,
installing and servicing the equipment. Therefore, EPA concludes that
the UL standard being incorporated by reference is reasonably
available.
    2. Supplement SB to UL Standard 471: Requirements for Refrigerators
and Freezers Employing A Flammable Refrigerant in the Refrigerating
System (10th Edition, November 24, 2010). This document establishes
requirements for commercial refrigerators and freezers that employ a
refrigerant that has been identified as having flammable
characteristics. The standard is available at http://ulstandards.ul.com/standard/?id=471&edition=10&doctype=ulstd, and may
be purchased by mail at: COMM 2000, 151 Eastern Avenue, Bensenville, IL
60106; Email<EMAIL_ADDRESS>Telephone: 1-888-853-3503 in the
U.S. or Canada (other countries dial +1-415-352-2168); Internet
address: http://ulstandards.ul.com/ or www.comm-2000.com. The cost of
UL 471 is $716 for an electronic copy and $897 for hardcopy. UL also
offers a subscription service to the SCCL that allows unlimited access
to their standards and related documents. The cost of obtaining this
standard is not a significant financial burden for equipment
manufacturers and purchase is not required for those selling,
installing and servicing the equipment. Therefore, EPA concludes that
the UL

standard being incorporated by reference is reasonably available.
    3. Supplement SA to UL Standard 563: Requirements for Ice Makers
Employing a Flammable Refrigerant in the Refrigeration System (8th
Edition, July 31, 2009). This document establishes requirements for
automatic ice makers, including unitary and remote ice makers. The
standard is available at http://ulstandards.ul.com/standard/?id=563&edition=8&doctype=ulstd, and may be purchased by mail at: COMM
2000, 151 Eastern Avenue, Bensenville, IL 60106; Email<EMAIL_ADDRESS>Telephone: 1-888-853-3503 in the U.S. or Canada (other
countries dial +1-415-352-2168); Internet address: http://ulstandards.ul.com/ or www.comm-2000.com. The cost of UL 563 is $716
for an electronic copy and $897 for hardcopy. UL also offers a
subscription service to the SCCL that allows unlimited access to their
standards and related documents. The cost of obtaining this standard is
not a significant financial burden for equipment manufacturers and
purchase is not required for those selling, installing and servicing
the equipment. Therefore, EPA concludes that the UL standard being
incorporated by reference is reasonably available.
    EPA is also incorporating by reference the list of refrigerants
that ASHRAE designates as flammability Class 3 according to ASHRAE
Standard 34-2013, Designation and Safety Classification of
Refrigerants, in the unacceptability listing for certain highly
flammable refrigerants for use in existing residential and light
commercial split AC systems. This standard is available at https://
www.ashrae.org/resources--publications/bookstore/standards-15--34 and
may be purchased by mail at: 6300 Interfirst Drive, Ann Arbor, MI
48108; by telephone: 1-800-527-4723 in the U.S. or Canada; Internet
address: http://www.techstreet.com/ashrae/ashrae_standards.html?ashrae_auth_token=. The cost of ASHRAE Standard
34-2013 is $107 for an electronic or hardcopy. The cost of obtaining
this standard is not a significant financial burden for equipment
manufacturers and purchase is not required for those selling,
installing and servicing the equipment. Therefore, EPA concludes that
the ASHRAE standard being incorporated by reference is reasonably
available.
    In addition, EPA is using standards from SAE in the use conditions
for HFO-1234yf. These standards are:
    1. SAE J639: Safety Standards for Motor Vehicle Refrigerant Vapor
Compression Systems (revised December 19, 2011). This document
establishes safety standards for HFO-1234yf MVAC systems that include
unique fittings; a warning label indicating the refrigerant's identity
and that it is a flammable refrigerant; and requirements for
engineering design strategies that include a high-pressure compressor
cutoff switch and pressure relief devices. This standard is available
at http://standards.sae.org/j639_201112/.
    2. SAE J1739 (adopted 2009): Potential Failure Mode and Effects
Analysis in Design (Design FMEA) and Potential Failure Mode and Effects
Analysis in Manufacturing and Assembly Processes (Process FMEA) and
Effects Analysis for Machinery (Machinery FMEA) (revised January 1,
2009). This standard describes potential FMEA in design and potential
FMEA in manufacturing and assembly processes. It requires manufacturers
of MVAC systems and vehicles to conduct a FMEA and assists users in the
identification and mitigation of risk by providing appropriate terms,
requirements, ranking charts, and worksheets. This standard is
available at http://standards.sae.org/j1739_200901/.
    3. SAE J2844 (Revised October 2011): R-1234yf (HFO-1234yf) New
Refrigerant Purity and Container Requirements For Use in Mobile Air-
Conditioning Systems (revised October 2011). This standard sets purity
standards and describes container requirements, including fittings for
refrigerant cylinders. For connections with refrigerant containers for
use in professional servicing, use fittings must be consistent with SAE
J2844 (revised October 2011). This standard is available at http://standards.sae.org/j2844_201110/.
    These standards may be purchased by mail at: SAE Customer Service,
400 Commonwealth Drive, Warrendale, PA 15096-0001; by telephone: 1-877-
606-7323 in the United States or<PHONE_NUMBER> outside the United States
or in Canada. The cost of SAE J639, SAE J1739, and SAE 2844 is $74 each
for an electronic or hardcopy. The cost of obtaining these standards is
not a significant financial burden for manufacturers of MVAC systems
and purchase is not required for those selling, installing and
servicing the systems. Therefore, EPA concludes that the use of SAE
J639, SAE J1739, and SAE J2844 are reasonably available.
    In addition, in today's rule, we are incorporating by reference a
standard that EPA already requires in a use condition for HFC-152a in
MVAC:
    4. SAE J2773: Standard for Refrigerant Risk Analysis for Mobile Air
Conditioning Systems (revised February 4, 2011). This standard
describes methods to understand the risks associated with MVAC systems
in all aspects of a vehicle's lifecycle including design, production,
assembly, operation and end of life. This standard is available at
http://standards.sae.org/j2773_201102/ and may be purchased by mail at:
SAE Customer Service, 400 Commonwealth Drive, Warrendale, PA 15096-
0001; by telephone: 1-877-606-7323 in the United States or<PHONE_NUMBER>
outside the United States or in Canada. The cost of SAE J2773 is $74
for an electronic or hardcopy. The cost of obtaining this standard is
not a significant financial burden for manufacturers of MVAC systems
and purchase is not required for those selling, installing and
servicing the systems. Therefore, EPA concludes that the use of SAE
J2773 is reasonably available.

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

    The human health or environmental risk addressed by this action
will not have potential disproportionately high and adverse human
health or environmental effects on minority, low-income or indigenous
populations. This action's health and risk assessments are contained in
the comparisons of toxicity for the various substitutes, as well as
risk screens for the substitutes that are listed as acceptable, subject
to use conditions, or are newly listed as
unacceptable.235 236 237 238 239 The risk screens are in the
docket for this rulemaking.
---------------------------------------------------------------------------

    \235\ ICF, 2016c. Significant New Alternatives Policy Program:
Refrigeration and Air Conditioning Sector Risk Screen on Substitutes
in Water Coolers Substitute: Propane (R-290).
    \236\ ICF, 2016d. Significant New Alternatives Policy Program:
Refrigeration and Air Conditioning Sector Risk Screen on Substitutes
in Very Low Temperature Refrigeration Substitute: Propane (R-290)
and Ethane (R-170).
    \237\ ICF, 2016e. Significant New Alternatives Policy Program:
Refrigeration and Air Conditioning Sector Risk Screen on Substitutes
in Commercial Ice Machines Substitute: Propane (R-290).
    \238\ ICF, 2016f. Significant New Alternatives Policy Program.
Refrigeration and Air Conditioning Sector Risk Screen on Substitutes
in Residential and Light Commercial Air Conditioning and Heat Pumps.
Substitute: R-443A.
    \239\ ICF, 2016g. Significant New Alternatives Policy Program.
Refrigeration and Air Conditioning Sector Risk Screen on Substitutes
in Chillers and Cold Storage Warehouses. Substitute: Propylene (R-
1270).
---------------------------------------------------------------------------

K. Congressional Review Act (CRA)

    This action is subject to the CRA, and EPA will submit a rule
report to each House of the Congress and to the

Comptroller General of the United States. This action is not a ``major
rule'' as defined by 5 U.S.C. 804(2).
IX. References
Abt Associates, 2016. Review of propylene acute toxicity for R-443A
risk screen. Prepared for EPA. July 6, 2016.
A.S. Trust & Holdings, 2014. Response to Incompleteness Letter from
A.S. Trust & Holdings to EPA--Sent March 7, 2014
AHRI, 2012. ``Test Report #1: System Drop-in Test of R-410A
Alternative Fluid (ARM-32a, ARM-70a, DR-5, HPR1D, L-41a, L-41b, and
R-32) in a 5-RT Air Cooled Water Chiller (Cooling Mode).'' November
26, 2012. This document is accessible at http://www.ahrinet.org/App_Content/ahri/files/RESEARCH/AREP_Final_Reports/AHRI%20Low-GWP%20AREP-Rpt-001.pdf.
AHRI, 2014. Guideline N-2014 for Assignment of Refrigerant Container
Colors. This document is accessible online at http://www.ahrinet.org/App_Content/ahri/files/Guidelines/AHRI_Guideline_N_2014.pdf.
AHRI, 2016. ``AHRI, ASHRAE, DOE Partner to Fund Flammable
Refrigerant Research.'' June 2, 2016. This document is accessible at
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AIRAH, 2013. Australian Institute of Refrigeration, Air Conditioning
and Heating. Safety Guide: Flammable Refrigerants. 2013. This
document is accessible at: http://www.unep.fr/ozonaction/information/mmcfiles/7681-e-FlammableRefrigerantsGuideAIRAH.pdf.
Airgas, 2015. Safety Data Sheet for Propylene.
Akerman, 2013. Hydrofluorocarbons and Climate Change: Summaries of
Recent Scientific and Papers. 2013.
ANSI/International Institute of Ammonia Refrigeration (IIAR)
Standard 2-2008 (Addendum B)--American National Standard for
Equipment, Design, & Installation of Closed Circuit Ammonia
Mechanical Refrigerating Systems
ASHRAE, 2013a. ANSI/ASHRAE Standard 34-2013: Designation and Safety
Classification of Refrigerants.
ASHRAE, 2013b. ANSI/ASHRAE Standard 15-2013: Safety Standard for
Refrigeration Systems.
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Accessible at: http://www.ecomall.com/greenshopping/greenfreeze.htm.
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EIA, 2015. Petition requesting EPA to modify the status under the
Significant New Alternatives Policy Program, of certain high-GWP
chemicals in various end-uses. Submitted October 6, 2015.
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Contribute Findings for Greenhouse Gases under Section 202(a) of the
Clean Air Act. December, 2009. This document is accessible at:
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EPA, 2015. Draft Regulatory Impact Analysis: Proposed Rulemaking for
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Montreal Protocol. July 20, 2016. Available online at https://blog.epa.gov/blog/2016/07/a-cool-way-to-combat-climate-change/.
Eppendorf, 2015. SNAP Information Notice for R-170 and R-290 in Very
Low Temperature Refrigeration. May, 2015.
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This document is accessible at: https://www.fire.tc.faa.gov/pdf/TC-14-50.pdf.
Fomo, 2014. Comment Re: Proposed SNAP Program Status Change Rule
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Fishback, Vice President, Research and Development, Fomo Products,
Inc. October 16, 2014. Docket number EPA-HQ-OAR-2014-0198-0139.
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Refrigerant R-1234yf. Prepared by Gradient for SAE International
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Summary of this document is accessible at: http://www.sae.org/standardsdev/tsb/cooperative/executivesummary.pdf.
Honeywell, 2014. Comments on Proposed Rule: Protection of
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Substitutes under the Significant New Alternatives Policy Program
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EPA-HQ-OAR-2014-0198-0170.
Honeywell, 2016. Comments on Proposed Rule: Protection of
Stratospheric Ozone: Change of Listing Status for Certain
Substitutes under the Significant New Alternatives Policy Program
(Docket no. EPA-HQ-OAR-2015-0663). Docket number EPA-HQ-OAR-2015-
0663-0086.
Hossaini, et al., 2015. R. Hossaini, M. P. Chipperfield, S. A.
Montzka, A. Rap, S. Dhomse, W. Feng. Efficiency of short-lived
halogens at influencing climate through depletion of stratospheric
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ICCT, 2015. International Council on Clean Transportation:
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Efficiency Technology in the United States. Available online at:
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ICF, 2008. Air-Conditioning Refrigerant Charge Size to Passenger
Compartment Volume Ratio Analysis. Confidential Memorandum Prepared
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ICF, 2009a. Revised Final Draft Assessment of the Potential Impacts
of HFO-1234yf and the Associated Production of TFA on Aquatic
Communities and Local Air Quality.
ICF, 2009b. Risk Screen on Substitutes for CFC-12 in Motor Vehicle
Air Conditioning: Substitute: HFO-1234yf. This document is
accessible at: http://www.regulations.gov/#!documentDetail;D=EPA-HQ-
OAR-2008-0664-0038.
ICF, 2010a. Summary of HFO-1234yf Emissions Assumptions.
ICF, 2010b. Summary of Updates to the Vintaging Model that Impacted
HFO-1234yf Emissions Estimates.
ICF, 2010c. Revised Assessment of the Potential Impacts of HFO-
1234yf and the Associated Production of TFA on Aquatic Communities,
Soil and Plants, and Local Air Quality.
ICF, 2010d. Sensitivity Analysis CMAQ results on projected maximum
TFA rainwater concentrations and maximum 8-hr ozone concentrations.
ICF, 2014a. Assessment of the Potential Impact of Hydrocarbon
Refrigerants on Ground Level Ozone Concentrations. February, 2014.
ICF, 2014b. Risk Screen on Substitutes for HCFC-22 in Residential
and Light Commercial Air Conditioning and Heat Pumps; Substitute:
Propane (R-290).
ICF, 2014c. Risk Screen on Substitutes for HCFC-22 in Residential
and Light Commercial Air Conditioning and Heat Pumps; Substitute: R-
441A.
ICF, 2015. Market Characterization of the U.S. Motor Vehicle Air
Conditioning Industry, U.S. Foams Industry, U.S. Aerosols Industry,
and U.S. Commercial Refrigeration Industry. July, 2015.
ICF, 2016a. Cost Analysis for Regulatory Changes to the Listing
Status of High-GWP Alternatives used in Refrigeration and Air
Conditioning, Foams, and Fire Suppression. September, 2016.
ICF, 2016b. Economic Impact Screening Analysis for Regulatory
Changes to the Listing Status of High-GWP Alternatives used in
Refrigeration and Air Conditioning, Foams, and Fire Suppression.
September, 2016.
ICF, 2016c. Significant New Alternatives Policy Program:
Refrigeration and Air Conditioning Sector Risk Screen on Substitutes
in Water Coolers Substitute: Propane (R-290).
ICF, 2016d. Significant New Alternatives Policy Program:
Refrigeration and Air Conditioning Sector Risk Screen on Substitutes
in Very Low Temperature Refrigeration Substitute: Propane (R-290)
and Ethane (R-170).
ICF, 2016e. Significant New Alternatives Policy Program:
Refrigeration and Air Conditioning Sector Risk Screen on Substitutes
in Commercial Ice Machines Substitute: Propane (R-290).
ICF, 2016f. Significant New Alternatives Policy Program.
Refrigeration and Air Conditioning Sector Risk Screen on Substitutes
in Residential and Light Commercial Air Conditioning and Heat Pumps.
Substitute: R-443A.
ICF, 2016g. Significant New Alternatives Policy Program.
Refrigeration and Air Conditioning Sector Risk Screen on Substitutes
in Chillers and Cold Storage Warehouses. Substitute: Propylene (R-
1270)
ICF, 2016h. Market Characterization for Fire Suppression, Comfort
Cooling, Cold Storage, Refrigerated Food Processing and Dispensing
Equipment, and Household Refrigeration Industries in the United
States. Prepared for the U.S. Environmental Protection Agency.
February, 2016.
ICF, 2016i. Technical Support Document for Acceptability Listing of
HFO-1234yf for Motor Vehicle Air Conditioning in Limited Heavy-Duty
Applications.
ICF, 2016j. Significant New Alternatives Policy Program. Fire
Extinguishing and Explosion Prevention Sector. Risk Screen on
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Substitute: 2-bromo-3,3,3-trifluoropropene (2-BTP).
ICF, 2016k. Significant New Alternatives Policy Program. Fire
Extinguishing and Explosion Prevention Sector. Risk Screen on
Substitutes for Total Flooding Systems in Unoccupied Spaces.
Substitute: 2-bromo-3,3,3-trifluoropropene (2-BTP).
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of Hydrocarbon Refrigerants on Ground Level Ozone Concentrations.
September, 2016.
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1336mzz(Z)/trans-1,2-dichloroethylene blend (74.7/25.3)
(OpteonTM XP30).
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Miller (eds.). Cambridge University Press, Cambridge, United Kingdom
and New York, NY, USA. This document is accessible at: www.ipcc.ch/
publications_and_data/ar4/wg1/en/contents.html.
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Nauels, Y. Xia, V. Bex and P.M. Midgley (eds.)]. Cambridge
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2015.

List of Subjects in 40 CFR Part 82

    Environmental protection, Administrative practice and procedure,
Air pollution control, Incorporation by reference, Recycling, Reporting
and recordkeeping requirements, Stratospheric ozone layer.

    Dated: September 26, 2016.
Gina McCarthy,
Administrator.

    For the reasons set forth in the preamble, EPA amends 40 CFR part
82 as follows:

PART 82--PROTECTION OF STRATOSPHERIC OZONE

0
1. The authority citation for part 82 continues to read as follows:

    Authority:  42 U.S.C. 7414, 7601, 7671-7671q.

Subpart F--Recycling and Emissions Reduction

0
2. Amend Sec.  82.154 by revising the introductory text to paragraph
(a)(1) and paragraph (a)(1)(viii) to read as follows:

Sec.  82.154  Prohibitions.

    (a) * * * (1) No person maintaining, servicing, repairing, or
disposing of an appliance or industrial process refrigeration may
knowingly vent or otherwise release into the environment any
refrigerant from such appliances. Notwithstanding any other provision
of this subpart, the following substitutes in the following end-uses
are exempt from this prohibition and from the requirements of this
subpart:
* * * * *
    (viii) Propane (R-290) in retail food refrigerators and freezers
(stand-alone units only); household refrigerators, freezers, and
combination refrigerators and freezers; self-contained room air
conditioners for residential and light commercial air-conditioning and
heat pumps; vending machines; and effective January 3, 2017, self-
contained commercial ice machines, very low temperature refrigeration
equipment, and water coolers;
* * * * *

Subpart G--Significant New Alternatives Policy Program

0
3. In appendix B to subpart G of part 82, the table titled
``Refrigerants--Acceptable Subject to Use Conditions'' is amended by:
0
 a. Revising the fifth entry;
0
 b. Adding three entries at the end; and
0
 c. Revising the NOTE following footnote 3.
    The revisions and additions to read as follows:

Appendix B to Subpart G of Part 82--Substitutes Subject to Use
Restrictions and Unacceptable Substitutes

                               Refrigerants--Acceptable Subject to Use Conditions
----------------------------------------------------------------------------------------------------------------
          Application              Substitute         Decision            Conditions              Comments
----------------------------------------------------------------------------------------------------------------

                                                  * * * * * * *
CFC-12 Automobile Motor         R-152a as a       Acceptable        Engineering            Additional training
 Vehicle Air Conditioning (New   substitute for    subject to use    strategies and/or      for service
 equipment only).                CFC-12.           conditions.       devices shall be       technicians
                                                                     incorporated into      recommended.
                                                                     the system such that  Manufacturers should
                                                                     foreseeable leaks      conduct and keep on
                                                                     into the passenger     file failure mode
                                                                     compartment do not     and Effect Analysis
                                                                     result in R-152a       (FMEA) on the MVAC
                                                                     concentrations of      as stated in SAE
                                                                     3.7% v/v or above in   J1739.
                                                                     any part of the free
                                                                     space1inside the
                                                                     passenger
                                                                     compartment for more
                                                                     than 15 seconds when
                                                                     the car ignition is
                                                                     on.
                                                                    Manufacturers must
                                                                     adhere to all the
                                                                     safety requirements
                                                                     listed in the
                                                                     Society of
                                                                     Automotive Engineers
                                                                     (SAE) Standard J639
                                                                     (adopted 2011),
                                                                     including unique
                                                                     fittings and a
                                                                     flammable
                                                                     refrigerant warning
                                                                     label as well as SAE
                                                                     Standard J2773
                                                                     (adopted February
                                                                     2011).

                                                  * * * * * * *
Motor vehicle air conditioning  HFO-1234yf......  Acceptable        As of January 3,       Additional training
 (newly manufactured medium-                       subject to use    2017:.                 for service
 duty passenger vehicles).                         conditions.      (1) HFO-1234yf MVAC     technicians
                                                                     systems must adhere    recommended.
                                                                     to all of the safety  HFO-1234yf is also
                                                                     requirements of SAE    known as 2,3,3,3-
                                                                     J639 (adopted 2011),   tetrafluoro-prop-1-
                                                                     including              ene (CAS. Reg. No.
                                                                     requirements for a     754-12-1).
                                                                     flammable
                                                                     refrigerant warning
                                                                     label, high-pressure
                                                                     compressor cutoff
                                                                     switch and pressure
                                                                     relief devices, and
                                                                     unique fittings. For
                                                                     connections with
                                                                     refrigerant
                                                                     containers for use
                                                                     in professional
                                                                     servicing, use
                                                                     fittings must be
                                                                     consistent with SAE
                                                                     J2844 (revised
                                                                     October 2011).
                                                                    (2) Manufacturers
                                                                     must conduct Failure
                                                                     Mode and Effect
                                                                     Analysis (FMEA) as
                                                                     provided in SAE
                                                                     J1739 (adopted
                                                                     2009). Manufacturers
                                                                     must keep the FMEA
                                                                     on file for at least
                                                                     three years from the
                                                                     date of creation.
Motor vehicle air conditioning  HFO-1234yf......  Acceptable        As of January 3,       Additional training
 (newly manufactured heavy-                        subject to use    2017:.                 for service
 duty pickup trucks).                              conditions.      (1) HFO-1234yf MVAC     technicians
                                                                     systems must adhere    recommended.
                                                                     to all of the safety  HFO-1234yf is also
                                                                     requirements of SAE    known as 2,3,3,3-
                                                                     J639 (adopted 2011),   tetrafluoro-prop-1-
                                                                     including              ene (CAS No 754-12-
                                                                     requirements for a     1).
                                                                     flammable
                                                                     refrigerant warning
                                                                     label, high-pressure
                                                                     compressor cutoff
                                                                     switch and pressure
                                                                     relief devices, and
                                                                     unique fittings. For
                                                                     connections with
                                                                     refrigerant
                                                                     containers for use
                                                                     in professional
                                                                     servicing, use
                                                                     fittings must be
                                                                     consistent with SAE
                                                                     J2844 (revised
                                                                     October 2011).
                                                                    (2) Manufacturers
                                                                     must conduct Failure
                                                                     Mode and Effect
                                                                     Analysis (FMEA) as
                                                                     provided in SAE
                                                                     J1739 (adopted
                                                                     2009). Manufacturers
                                                                     must keep the FMEA
                                                                     on file for at least
                                                                     three years from the
                                                                     date of creation.
Motor vehicle air conditioning  HFO-1234yf......  Acceptable        As of January 3,       Additional training
 (newly manufactured complete                      subject to use    2017:.                 for service
 heavy-duty vans only).                            conditions.      (1) HFO-1234yf MVAC     technicians
                                                                     systems must adhere    recommended.
                                                                     to all of the safety  HFO-1234yf is also
                                                                     requirements of SAE    known as 2,3,3,3-
                                                                     J639 (adopted 2011),   tetrafluoro-prop-1-
                                                                     including              ene (CAS No 754-12-
                                                                     requirements for a     1).
                                                                     flammable             HFO-1234yf is
                                                                     refrigerant warning    acceptable for
                                                                     label, high-pressure   complete heavy-duty
                                                                     compressor cutoff      vans. Complete heavy-
                                                                     switch and pressure    duty vans are not
                                                                     relief devices, and    altered by a
                                                                     unique fittings. For   secondary or
                                                                     connections with       tertiary
                                                                     refrigerant            manufacturer.
                                                                     containers for use
                                                                     in professional
                                                                     servicing, use
                                                                     fittings must be
                                                                     consistent with SAE
                                                                     J2844 (revised
                                                                     October 2011).
                                                                    (2) Manufacturers
                                                                     must conduct Failure
                                                                     Mode and Effect
                                                                     Analysis (FMEA) as
                                                                     provided in SAE
                                                                     J1739 (adopted
                                                                     2009). Manufacturers
                                                                     must keep the FMEA
                                                                     on file for at least
                                                                     three years from the
                                                                     date of creation.
----------------------------------------------------------------------------------------------------------------

* * * * *

    Note 1: The Director of the Federal Register approves the
incorporation by reference of the material under ``Conditions'' in
the table ``REFRIGERANTS--ACCEPTABLE SUBJECT TO USE CONDITIONS'' (5
U.S.C. 552(a) and 1 CFR part 51). You may obtain a copy from SAE
Customer Service, 400 Commonwealth Drive, Warrendale, PA 15096-0001
USA; email<EMAIL_ADDRESS>Telephone: 1-877-606-7323 (U.S.
and Canada only) or 1-724-776-4970 (outside the U.S. and Canada);
Internet address: http://store.sae.org/dlabout.htm. You may inspect
a copy at U.S. EPA's Air Docket; EPA West Building, Room 3334; 1301
Constitution Ave. NW., Washington, DC, or at the National Archives
and Records Administration (NARA). For questions regarding access to
these standards, the telephone number of EPA's Air Docket is 202-
566-1742. For information on the availability of this material at
NARA, call<PHONE_NUMBER>, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

* * * * *

0
4. Appendix K to subpart G of part 82 is revised to read as follows:

Appendix K to Subpart G of Part 82--Substitutes Subject to Use
Restrictions and Unacceptable Substitutes Listed in the July 22, 2002,
Final Rule Effective August 21, 2002

                                     Foam Blowing--Unacceptable Substitutes
----------------------------------------------------------------------------------------------------------------
               End-use                        Substitute                Decision                 Comments
----------------------------------------------------------------------------------------------------------------
Replacements for HCFC-141b in the      HCFC-22, HCFC-142b and   Unacceptable Closed      Alternatives exist with
 following rigid polyurethane/          blends thereof.          cell foam products and   lower or zero-ODP.
 polyisocyanurate applications:.                                 products containing
--Boardstock.........................                            closed cell foams
--Appliance..........................                            manufactured with
--Spray..............................                            these substitutes on
                                                                 or before December 1,
                                                                 2017 may be used after
                                                                 that date.
All foam end-uses....................  HCFC-124...............  Unacceptable Closed      Alternatives exist with
                                                                 cell foam products and   lower or zero-ODP.
                                                                 products containing
                                                                 closed cell foams
                                                                 manufactured with this
                                                                 substitute on or
                                                                 before December 1,
                                                                 2017 may be used after
                                                                 that date.
----------------------------------------------------------------------------------------------------------------

0
5. Appendix M to subpart G of part 82 is revised to read as follows:

Appendix M to Subpart G--Unacceptable Substitutes Listed in the
September 30, 2004 Final Rule, Effective November 29, 2004

                                     Foam Blowing--Unacceptable Substitutes
----------------------------------------------------------------------------------------------------------------
               End-use                        Substitute                Decision                 Comments
----------------------------------------------------------------------------------------------------------------
All foam end-uses:                     HCFC-141b..............  Unacceptable Closed      Alternatives exist with
--rigid polyurethane and                                         cell foam products and   lower or zero-ODP.
 polyisocyanurate laminated                                      products containing
 boardstock                                                      closed cell foams
--rigid polyurethane appliance                                   manufactured with this
--rigid polyurethane spray and                                   substitute on or
 commercial refrigeration, and                                   before December 1,
 sandwich panels                                                 2017 may be used after
                                                                 that date.
    --rigid polyurethane slabstock
     and other foams
    --polystyrene extruded insulation
     boardstock and billet.
    --phenolic insulation board and
     bunstock.
    --flexible polyurethane..........
    --polystyrene extruded sheet.....
    --Except for: \1\................
    --space vehicle..................
    --nuclear........................
    --defense........................
    --research and development for
     foreign customers.
----------------------------------------------------------------------------------------------------------------
\1\ Exemptions for specific applications are identified in the list of acceptable substitutes, which is
  available on the SNAP Web site at: https://www.epa.gov/snap/foam-blowing-agents.

0
6. Appendix O to subpart G of part 82 is amended by revising the table
titled ``Fire Suppression and Explosion Protection Sector-Total
Flooding Substitutes-Acceptable Subject to Use Conditions'' to read as
follows:

Appendix O to Subpart G of Part 82--Substitutes Listed in the September
27, 2006 Final Rule, Effective November 27, 2006

     Fire Suppression and Explosion Protection Sector--Total Flooding Substitutes--Acceptable Subject to Use
                                                   Conditions
----------------------------------------------------------------------------------------------------------------
            End-use                Substitute         Decision            Conditions        Further information
----------------------------------------------------------------------------------------------------------------
Total flooding................  Gelled            Acceptable        Use of whichever       Use of this agent
                                 Halocarbon/Dry    subject to use    hydrofluorocarbon      should be in
                                 Chemical          conditions.       gas (HFC-125, HFC-     accordance with the
                                 Suspension                          227ea, or HFC-236fa)   safety guidelines in
                                 (Envirogel)                         is employed in the     the latest edition
                                 with sodium                         formulation must be    of the NFPA 2001
                                 bicarbonate                         in accordance with     Standard for Clean
                                 additive.                           all requirements for   Agent Fire
                                                                     acceptability (i.e.,   Extinguishing
                                                                     narrowed use limits)   Systems, for
                                                                     of that HFC under      whichever
                                                                     EPA's SNAP program.    hydrofluorocarbon
                                                                                gas is employed, and
                                                                                the latest edition
                                                                                of the NFPA 2010
                                                                                standard for Aerosol
                                                                                Extinguishing
                                                                                Systems.
                                                                                Sodium bicarbonate
                                                                                release in all
                                                                                settings should be
                                                                                targeted so that
                                                                                increased blood pH
                                                                                level would not
                                                                                adversely affect
                                                                                exposed individuals.
                                                                                Users should provide
                                                                                special training,
                                                                                including the
                                                                                potential hazards
                                                                                associated with the
                                                                                use of the HFC agent
                                                                                and sodium
                                                                                bicarbonate, to
                                                                                individuals required
                                                                                to be in
                                                                                environments
                                                                                protected by
                                                                                Envirogel with
                                                                                sodium bicarbonate
                                                                                additive
                                                                                extinguishing
                                                                                systems.
                                                                                Each extinguisher
                                                                                should be clearly
                                                                                labeled with the
                                                                                potential hazards
                                                                                from use and safe
                                                                                handling procedures.
                                                                                See additional
                                                                                comments 1, 2, 3, 4,
                                                                                5.
Total flooding................  Powdered Aerosol  Acceptable        For use only in        Use of this agent
                                 E                 subject to use    normally unoccupied    should be in
                                 (FirePro[supreg   conditions.       areas.                 accordance with the
                                 ]).                                                        safety guidelines in
                                                                                the latest edition
                                                                                of the NFPA 2010
                                                                                standard for Aerosol
                                                                                Extinguishing
                                                                                Systems.
                                                                                For establishments
                                                                                manufacturing the
                                                                                agent or filling,
                                                                                installing, or
                                                                                servicing containers
                                                                                or systems to be
                                                                                used in total
                                                                                flooding
                                                                                applications, EPA
                                                                                recommends the
                                                                                following:
                                                                                --adequate
                                                                                ventilation should
                                                                                be in place to
                                                                                reduce airborne
                                                                                exposure to
                                                                                constituents of
                                                                                agent;
                                                                                --an eye wash
                                                                                fountain and quick
                                                                                drench facility
                                                                                should be close to
                                                                                the production area;
                                                                                --training for safe
                                                                                handling procedures
                                                                                should be provided
                                                                                to all employees
                                                                                that would be likely
                                                                                to handle containers
                                                                                of the agent or
                                                                                extinguishing units
                                                                                filled with the
                                                                                agent;
                                                                                --workers responsible
                                                                                for clean up should
                                                                                allow for maximum
                                                                                settling of all
                                                                                particulates before
                                                                                reentering area and
                                                                                wear appropriate
                                                                                protective
                                                                                equipment; and
                                                                                --all spills should
                                                                                be cleaned up
                                                                                immediately in
                                                                                accordance with good
                                                                                industrial hygiene
                                                                                practices.
                                                                                See additional
                                                                                comments 1, 2, 3, 4,
                                                                                5.
Total flooding................  Phosphorous       Acceptable        For use only in        For establishments
                                 Tribromide        subject to use    aircraft engine        manufacturing the
                                 (PBr3).           conditions.       nacelles.              agent or filling,
                                                                                installing, or
                                                                                servicing containers
                                                                                or systems, EPA
                                                                                recommends the
                                                                                following:
                                                                                --adequate
                                                                                ventilation should
                                                                                be in place and/or
                                                                                positive pressure,
                                                                                self-contained
                                                                                breathing apparatus
                                                                                (SCBA) should be
                                                                                worn;
                                                                                --training for
                                                                                safe handling
                                                                                procedures should
                                                                                be provided to
                                                                                all employees
                                                                                that would be
                                                                                likely to handle
                                                                                containers of the
                                                                                agent or
                                                                                extinguishing
                                                                                units filled with
                                                                                the agent; and
                                                                                --all spills
                                                                                should be cleaned
                                                                                up immediately in
                                                                                accordance with
                                                                                good industrial
                                                                                hygiene
                                                                                practices.
                                                                                See additional
                                                                                comments 1, 2, 3,
                                                                                4, 5.
----------------------------------------------------------------------------------------------------------------
Additional comments:
1--Should conform to relevant OSHA requirements, including 29 CFR 1910, Subpart L, Sections 1910.160 and
  1910.162.
2--Per OSHA requirements, protective gear (SCBA) should be available in the event personnel should reenter the
  area.
3--Discharge testing should be strictly limited to that which is essential to meet safety or performance
  requirements.
4--The agent should be recovered from the fire protection system in conjunction with testing or servicing, and
  recycled for later use or destroyed.
5--EPA has no intention of duplicating or displacing OSHA coverage related to the use of personal protective
  equipment (e.g., respiratory protection), fire protection, hazard communication, worker training or any other
  occupational safety and health standard with respect to halon substitutes.

0
7. Appendix Q to subpart G of part 82 is revised to read as follows:

Appendix Q to Subpart G of Part 82--Unacceptable Substitutes Listed in
the March 28, 2007 Final Rule, Effective May 29, 2007

                                      Foam Blowing Unacceptable Substitutes
----------------------------------------------------------------------------------------------------------------
              End-use                      Substitute                  Decision             Further information
----------------------------------------------------------------------------------------------------------------
--Rigid polyurethane commercial      HCFC-22, HCFC-142b as   Unacceptable \1\...........  Alternatives exist
 refrigeration.                       substitutes for HCFC-  Closed cell foam products     with lower or zero-
--Rigid polyurethane sandwich         141b.                   and products containing      ODP.
 panels.                                                      closed cell foams
--Rigid polyurethane slabstock and                            manufactured with these
 other foams.                                                 substitutes on or before
                                                              December 1, 2017 may be
                                                              used after that date.
--Rigid polyurethane and             HCFC-22, HCFC-142b as   Unacceptable \2\...........  Alternatives exist
 polyisocyanurate laminated           substitutes for CFCs.  Closed cell foam products     with lower or zero-
 boardstock.                                                  and products containing      ODP.
--Rigid polyurethane appliance.....                           closed cell foams
--Rigid polyurethane spray and                                manufactured with these
 commercial refrigeration, and                                substitutes on or before
 sandwich panels.                                             December 1, 2017 may be
--Rigid polyurethane slabstock and                            used after that date.
 other foams.
--Polystyrene extruded insulation
 boardstock and billet.
--Phenolic insulation board and
 bunstock.
--Flexible polyurethane............
--Polystyrene extruded sheet.......
----------------------------------------------------------------------------------------------------------------
\1\ For existing users of HCFC-22 and HCFC-142b as of November 4, 2005 other than in marine applications, the
  unacceptability determination is effective on March 1, 2008; for existing users of HCFC-22 and HCFC-142b as of
  November 4, 2005 in marine applications, including marine flotation foam, the unacceptability determination is
  effective on September 1, 2009. For an existing user of HCFC-22 or HCFC-142b that currently operates in only
  one facility that it does not own, and is scheduled to transition to a non-ODS, flammable alternative to
  coincide with a move to a new facility and installation of new process equipment that cannot be completed by
  March 1, 2008, the unacceptability determination is effective January 1, 2010.
\2\ For existing users of HCFC-22 and HCFC-142b in polystyrene extruded insulation boardstock and billet and the
  other foam end-uses, as of November 4, 2005, the unacceptability determination is effective on January 1,
  2010.

0
8. Appendix U to subpart G of part 82 is amended by revising the tables
titled ``Foam Blowing Agents--Substitutes Acceptable Subject to
Narrowed Use Limits'' and ``Unacceptable Substitutes'' to read as
follows:

Appendix U to Subpart G of Part 82--Unacceptable Substitutes and
Substitutes Subject to Use Restrictions Listed in the July 20, 2015
Final Rule, Effective August 19, 2015

* * * * *

                   Foam Blowing Agents--Substitutes Acceptable Subject to Narrowed Use Limits
----------------------------------------------------------------------------------------------------------------
            End-use                Substitute         Decision       Narrowed use limits    Further information
----------------------------------------------------------------------------------------------------------------
Rigid Polyurethane: Appliance.  HFC-134a, HFC-    Acceptable        Acceptable from        Users are required to
                                 245fa, HFC-       Subject to        January 1, 2020,       document and retain
                                 365mfc and        Narrowed Use      until January 1,       the results of their
                                 blends thereof;   Limits.           2022, in military      technical
                                 Formacel TI,                        applications and       investigation of
                                 and Formacel Z-                     until January 1,       alternatives for the
                                 6.                                  2025, in space- and    purpose of
                                                                     aeronautics-related    demonstrating
                                                                     applications where     compliance.
                                                                     reasonable efforts     Information should
                                                                     have been made to      include descriptions
                                                                     ascertain that other   of:
                                                                     alternatives are not   Process or
                                                                     technically feasible   product in which the
                                                                     due to performance     substitute is
                                                                     or safety              needed;
                                                                     requirements.          Substitutes
                                                                    Closed cell foam        examined and
                                                                     products and           rejected;
                                                                     products containing    Reason for
                                                                     closed cell foams      rejection of other
                                                                     manufactured with      alternatives, e.g.,
                                                                     these substitutes on   performance,
                                                                     or before January 1,   technical or safety
                                                                     2022, for military     standards; and/or
                                                                     applications or on     Anticipated
                                                                     and before January     date other
                                                                     1, 2025, in space-     substitutes will be
                                                                     and aeronautics-       available and
                                                                     related                projected time for
                                                                     applications, may be   switching.
                                                                     used after those
                                                                     dates.
Rigid Polyurethane: Commercial  HFC-134a, HFC-    Acceptable        Acceptable from        Users are required to
 Refrigeration and Sandwich      245fa, HFC-       Subject to        January 1, 2020,       document and retain
 Panels.                         365mfc, and       Narrowed Use      until January 1,       the results of their
                                 blends thereof;   Limits.           2022, in military      technical
                                 Formacel TI,                        applications and       investigation of
                                 and Formacel Z-                     until January 1,       alternatives for the
                                 6.                                  2025, in space- and    purpose of
                                                                     aeronautics-related    demonstrating
                                                                     applications where     compliance.
                                                                     reasonable efforts     Information should
                                                                     have been made to      include descriptions
                                                                     ascertain that other   of:
                                                                     alternatives are not   Process or
                                                                     technically feasible   product in which the
                                                                     due to performance     substitute is
                                                                     or safety              needed;
                                                                     requirements.          Substitutes
                                                                    Closed cell foam        examined and
                                                                     products and           rejected;
                                                                     products containing    Reason for
                                                                     closed cell foams      rejection of other
                                                                     manufactured with      alternatives, e.g.,
                                                                     these substitutes on   performance,
                                                                     or before January 1,   technical or safety
                                                                     2022, for military     standards; and/or
                                                                     applications or on     Anticipated
                                                                     and before January     date other
                                                                     1, 2025, in space-     substitutes will be
                                                                     and aeronautics-       available and
                                                                     related                projected time for
                                                                     applications, may be   switching.
                                                                     used after those
                                                                     dates.

Flexible Polyurethane.........  HFC-134a, HFC-    Acceptable        Acceptable from        Users are required to
                                 245fa, HFC-       Subject to        January 1, 2017,       document and retain
                                 365mfc, and       Narrowed Use      until January 1,       the results of their
                                 blends thereof.   Limits.           2022, in military      technical
                                                                     applications and       investigation of
                                                                     until January 1,       alternatives for the
                                                                     2025, in space- and    purpose of
                                                                     aeronautics-related    demonstrating
                                                                     applications where     compliance.
                                                                     reasonable efforts     Information should
                                                                     have been made to      include descriptions
                                                                     ascertain that other   of:
                                                                     alternatives are not   Process or
                                                                     technically feasible   product in which the
                                                                     due to performance     substitute is
                                                                     or safety              needed;
                                                                     requirements.          Substitutes
                                                                                examined and
                                                                                rejected;
                                                                                Reason for
                                                                                rejection of other
                                                                                alternatives, e.g.,
                                                                                performance,
                                                                                technical or safety
                                                                                standards; and/or
                                                                                Anticipated
                                                                                date other
                                                                                substitutes will be
                                                                                available and
                                                                                projected time for
                                                                                switching.
Rigid Polyurethane: Slabstock   HFC-134a, HFC-    Acceptable        Acceptable from        Users are required to
 and Other.                      245fa, HFC-       Subject to        January 1, 2019,       document and retain
                                 365mfc and        Narrowed Use      until January 1,       the results of their
                                 blends thereof;   Limits.           2022, in military      technical
                                 Formacel TI,                        applications and       investigation of
                                 and Formacel Z-                     until January 1,       alternatives for the
                                 6.                                  2025, in space- and    purpose of
                                                                     aeronautics-related    demonstrating
                                                                     applications where     compliance.
                                                                     reasonable efforts     Information should
                                                                     have been made to      include descriptions
                                                                     ascertain that other   of:
                                                                     alternatives are not   Process or
                                                                     technically feasible   product in which the
                                                                     due to performance     substitute is
                                                                     or safety              needed;
                                                                     requirements.          Substitutes
                                                                    Closed cell foam        examined and
                                                                     products and           rejected;
                                                                     products containing    Reason for
                                                                     closed cell foams      rejection of other
                                                                     manufactured with      alternatives, e.g.,
                                                                     these substitutes on   performance,
                                                                     or before January 1,   technical or safety
                                                                     2022, for military     standards; and/or
                                                                     applications or on     Anticipated
                                                                     and before January     date other
                                                                     1, 2025, in space-     substitutes will be
                                                                     and aeronautics-       available and
                                                                     related                projected time for
                                                                     applications, may be   switching.
                                                                     used after those
                                                                     dates.
Rigid Polyurethane and          HFC-134a, HFC-    Acceptable        Acceptable from        Users are required to
 Polyisocyanurate Laminated      245fa, HFC-       Subject to        January 1, 2017,       document and retain
 Boardstock.                     365mfc and        Narrowed Use      until January 1,       the results of their
                                 blends thereof.   Limits.           2022, in military      technical
                                                                     applications and       investigation of
                                                                     until January 1,       alternatives for the
                                                                     2025, in space- and    purpose of
                                                                     aeronautics-related    demonstrating
                                                                     applications where     compliance.
                                                                     reasonable efforts     Information should
                                                                     have been made to      include descriptions
                                                                     ascertain that other   of:
                                                                     alternatives are not   Process or
                                                                     technically feasible   product in which the
                                                                     due to performance     substitute is
                                                                     or safety              needed;
                                                                     requirements.          Substitutes
                                                                    Closed cell foam        examined and
                                                                     products and           rejected;
                                                                     products containing    Reason for
                                                                     closed cell foams      rejection of other
                                                                     manufactured with      alternatives, e.g.,
                                                                     these substitutes on   performance,
                                                                     or before January 1,   technical or safety
                                                                     2022, for military     standards; and/or
                                                                     applications or on     Anticipated
                                                                     and before January     date other
                                                                     1, 2025, in space-     substitutes will be
                                                                     and aeronautics-       available and
                                                                     related                projected time for
                                                                     applications, may be   switching.
                                                                     used after those
                                                                     dates.
Rigid Polyurethane: Marine      HFC-134a, HFC-    Acceptable        Acceptable from        Users are required to
 Flotation Foam.                 245fa, HFC-       Subject to        January 1, 2020,       document and retain
                                 365mfc and        Narrowed Use      until January 1,       the results of their
                                 blends thereof;   Limits.           2022, in military      technical
                                 Formacel TI,                        applications and       investigation of
                                 and Formacel Z-                     until January 1,       alternatives for the
                                 6.                                  2025, in space- and    purpose of
                                                                     aeronautics-related    demonstrating
                                                                     applications where     compliance.
                                                                     reasonable efforts     Information should
                                                                     have been made to      include descriptions
                                                                     ascertain that other   of:
                                                                     alternatives are not   Process or
                                                                     technically feasible   product in which the
                                                                     due to performance     substitute is
                                                                     or safety              needed;
                                                                     requirements.          Substitutes
                                                                    Closed cell foam        examined and
                                                                     products and           rejected;
                                                                     products containing    Reason for
                                                                     closed cell foams      rejection of other
                                                                     manufactured with      alternatives, e.g.,
                                                                     these substitutes on   performance,
                                                                     or before January 1,   technical or safety
                                                                     2022, for military     standards; and/or
                                                                     applications or on     Anticipated
                                                                     and before January     date other
                                                                     1, 2025, in space-     substitutes will be
                                                                     and aeronautics-       available and
                                                                     related                projected time for
                                                                     applications, may be   switching.
                                                                     used after those
                                                                     dates.
Polystyrene: Extruded Sheet...  HFC-134a, HFC-    Acceptable        Acceptable from        Users are required to
                                 245fa, HFC-       Subject to        January 1, 2017,       document and retain
                                 365mfc, and       Narrowed Use      until January 1,       the results of their
                                 blends thereof;   Limits.           2022, in military      technical
                                 Formacel TI,                        applications and       investigation of
                                 and Formacel Z-                     until January 1,       alternatives for the
                                 6.                                  2025, in space- and    purpose of
                                                                     aeronautics-related    demonstrating
                                                                     applications where     compliance.
                                                                     reasonable efforts     Information should
                                                                     have been made to      include descriptions
                                                                     ascertain that other   of:
                                                                     alternatives are not   Process or
                                                                     technically feasible   product in which the
                                                                     due to performance     substitute is
                                                                     or safety              needed;
                                                                     requirements.          Substitutes
                                                                    Closed cell foam        examined and
                                                                     products and           rejected;
                                                                     products containing    Reason for
                                                                     closed cell foams      rejection of other
                                                                     manufactured with      alternatives, e.g.,
                                                                     these substitutes on   performance,
                                                                     or before January 1,   technical or safety
                                                                     2022, for military     standards; and/or
                                                                     applications or on     Anticipated
                                                                     and before January     date other
                                                                     1, 2025, in space-     substitutes will be
                                                                     and aeronautics-       available and
                                                                     related                projected time for
                                                                     applications, may be   switching.
                                                                     used after those
                                                                     dates.

Polystyrene: Extruded           HFC-134a, HFC-    Acceptable        Acceptable from        Users are required to
 Boardstock and Billet.          245fa, HFC-       Subject to        January 1, 2021,       document and retain
                                 365mfc, and       Narrowed Use      until January 1,       the results of their
                                 blends thereof;   Limits.           2022, in military      technical
                                 Formacel TI,                        applications and       investigation of
                                 Formacel B, and                     until January 1,       alternatives for the
                                 Formacel Z-6.                       2025, in space- and    purpose of
                                                                     aeronautics-related    demonstrating
                                                                     applications where     compliance.
                                                                     reasonable efforts     Information should
                                                                     have been made to      include descriptions
                                                                     ascertain that other   of:
                                                                     alternatives are not   Process or
                                                                     technically feasible   product in which the
                                                                     due to performance     substitute is
                                                                     or safety              needed;
                                                                     requirements.          Substitutes
                                                                    Closed cell foam        examined and
                                                                     products and           rejected;
                                                                     products containing    Reason for
                                                                     closed cell foams      rejection of other
                                                                     manufactured with      alternatives, e.g.,
                                                                     these substitutes on   performance,
                                                                     or before January 1,   technical or safety
                                                                     2022, for military     standards; and/or
                                                                     applications or on     Anticipated
                                                                     and before January     date other
                                                                     1, 2025, in space-     substitutes will be
                                                                     and aeronautics-       available and
                                                                     related                projected time for
                                                                     applications, may be   switching.
                                                                     used after those
                                                                     dates.
Integral Skin Polyurethane....  HFC-134a, HFC-    Acceptable        Acceptable from        Users are required to
                                 245fa, HFC-       Subject to        January 1, 2017,       document and retain
                                 365mfc, and       Narrowed Use      until January 1,       the results of their
                                 blends thereof;   Limits.           2022, in military      technical
                                 Formacel TI,                        applications and       investigation of
                                 and Formacel Z-                     until January 1,       alternatives for the
                                 6.                                  2025, in space- and    purpose of
                                                                     aeronautics-related    demonstrating
                                                                     applications where     compliance.
                                                                     reasonable efforts     Information should
                                                                     have been made to      include descriptions
                                                                     ascertain that other   of:
                                                                     alternatives are not   Process or
                                                                     technically feasible   product in which the
                                                                     due to performance     substitute is
                                                                     or safety              needed;
                                                                     requirements.          Substitutes
                                                                                examined and
                                                                                rejected;
                                                                                Reason for
                                                                                rejection of other
                                                                                alternatives, e.g.,
                                                                                performance,
                                                                                technical or safety
                                                                                standards; and/or
                                                                                Anticipated
                                                                                date other
                                                                                substitutes will be
                                                                                available and
                                                                                projected time for
                                                                                switching.
Polyolefin....................  HFC-134a, HFC-    Acceptable        Acceptable from        Users are required to
                                 245fa, HFC-       Subject to        January 1, 2020,       document and retain
                                 365mfc, and       Narrowed Use      until January 1,       the results of their
                                 blends thereof;   Limits.           2022, in military      technical
                                 Formacel TI,                        applications and       investigation of
                                 and Formacel Z-                     until January 1,       alternatives for the
                                 6.                                  2025, in space- and    purpose of
                                                                     aeronautics-related    demonstrating
                                                                     applications where     compliance.
                                                                     reasonable efforts     Information should
                                                                     have been made to      include descriptions
                                                                     ascertain that other   of:
                                                                     alternatives are not   Process or
                                                                     technically feasible   product in which the
                                                                     due to performance     substitute is
                                                                     or safety              needed;
                                                                     requirements.          Substitutes
                                                                    Closed cell foam        examined and
                                                                     products and           rejected;
                                                                     products containing    Reason for
                                                                     closed cell foams      rejection of other
                                                                     manufactured with      alternatives, e.g.,
                                                                     these substitutes on   performance,
                                                                     or before January 1,   technical or safety
                                                                     2022, for military     standards; and/or
                                                                     applications or on     Anticipated
                                                                     and before January     date other
                                                                     1, 2025, in space-     substitutes will be
                                                                     and aeronautics-       available and
                                                                     related                projected time for
                                                                     applications, may be   switching.
                                                                     used after those
                                                                     dates.
Phenolic Insulation Board and   HFC-143a, HFC-    Acceptable        Acceptable from        Users are required to
 Bunstock.                       134a, HFC-        Subject to        January 1, 2017,       document and retain
                                 245fa, HFC-       Narrowed Use      until January 1,       the results of their
                                 365mfc, and       Limits.           2022, in military      technical
                                 blends thereof.                     applications and       investigation of
                                                                     until January 1,       alternatives for the
                                                                     2025, in space- and    purpose of
                                                                     aeronautics-related    demonstrating
                                                                     applications where     compliance.
                                                                     reasonable efforts     Information should
                                                                     have been made to      include descriptions
                                                                     ascertain that other   of:
                                                                     alternatives are not   Process or
                                                                     technically feasible   product in which the
                                                                     due to performance     substitute is
                                                                     or safety              needed;
                                                                     requirements.          Substitutes
                                                                    Closed cell foam        examined and
                                                                     products and           rejected;
                                                                     products containing    Reason for
                                                                     closed cell foams      rejection of other
                                                                     manufactured with      alternatives, e.g.,
                                                                     these substitutes on   performance,
                                                                     or before January 1,   technical or safety
                                                                     2022, for military     standards; and/or
                                                                     applications or on     Anticipated
                                                                     and before January     date other
                                                                     1, 2025, in space-     substitutes will be
                                                                     and aeronautics-       available and
                                                                     related                projected time for
                                                                     applications, may be   switching.
                                                                     used after those
                                                                     dates.
----------------------------------------------------------------------------------------------------------------

                                            Unacceptable Substitutes
----------------------------------------------------------------------------------------------------------------
               End-use                        Substitute                Decision           Further information
----------------------------------------------------------------------------------------------------------------
All Foam Blowing End-uses............  HCFC-141b and blends     Unacceptable effective   HCFC-141b has an ozone
                                        thereof.                 September 18, 2015.      depletion potential of
                                                                 Closed cell foam         0.11 under the
                                                                 products and products    Montreal Protocol. EPA
                                                                 containing closed cell   previously found HCFC-
                                                                 foams manufactured       141b unacceptable in
                                                                 with these substitutes   all foam blowing end-
                                                                 on or before December    uses (appendix M to
                                                                 1, 2017 may be used      subpart G of 40 CFR
                                                                 after that date.         part 82). HCFC-141b
                                                                                has an ozone depletion
                                                                                potential (ODP) of
                                                                                0.11.
All Foam Blowing end-uses............  HCFC-22, HCFC-142b, and  Unacceptable effective   Use or introduction
                                        blends thereof.          September 18, 2015.      into interstate
                                                                 Closed cell foam         commerce of virgin
                                                                 products and products    HCFC-22 and HCFC-142b
                                                                 containing closed cell   for foam blowing is
                                                                 foams manufactured       prohibited after
                                                                 with these substitutes   January 1, 2010 under
                                                                 on or before December    EPA's regulations at
                                                                 1, 2017 may be used      40 CFR part 82 subpart
                                                                 after that date.         A unless used,
                                                                                recovered, and
                                                                                recycled. These
                                                                                compounds have ODPs of
                                                                                0.055 and 0.065,
                                                                                respectively.

Flexible Polyurethane................  HFC-134a, HFC-245fa,     Unacceptable as of       These foam blowing
                                        HFC-365mfc, and blends   January 1, 2017,         agents have global
                                        thereof.                 except where allowed     warming potentials
                                                                 under a narrowed use     (GWPs) ranging from
                                                                 limit.                   725 to 1,430. Other
                                                                                substitutes will be
                                                                                available for this end-
                                                                                use with lower overall
                                                                                risk to human health
                                                                                and the environment by
                                                                                the status change
                                                                                date.
Polystyrene: Extruded Sheet..........  HFC-134a, HFC-245fa,     Unacceptable as of       These foam blowing
                                        HFC-365mfc, and blends   January 1, 2017,         agents have GWPs
                                        thereof; Formacel TI,    except where allowed     ranging from higher
                                        and Formacel Z-6.        under a narrowed use     than 370 to
                                                                 limit.                   approximately 1,500.
                                                                Closed cell foam          Other substitutes will