Protection of Stratospheric Ozone: Notice 20 for Significant New Alternatives Policy Program, 15589-15597 [06-3030]

Download as PDF Federal Register / Vol. 71, No. 60 / Wednesday, March 29, 2006 / Rules and Regulations rulemaking published in the Federal Register on March 18, 1994 (59 FR 13044). Notices and rulemakings under the SNAP program, as well as other EPA publications on protection of stratospheric ozone, are available at EPA’s Ozone Depletion World Wide Web site at https://www.epa.gov/ozone/ including the SNAP portion at https:// www.epa.gov/ozone/snap/. SUPPLEMENTARY INFORMATION: ENVIRONMENTAL PROTECTION AGENCY 40 CFR Part 82 [EPA–HQ–OAR–2003–0118; FRL–8050–9] RIN 2060–AG12 Protection of Stratospheric Ozone: Notice 20 for Significant New Alternatives Policy Program Environmental Protection Agency (EPA). ACTION: Notice of acceptability. hsrobinson on PROD1PC68 with RULES AGENCY: SUMMARY: This Notice of Acceptability expands the list of acceptable substitutes for ozone-depleting substances (ODS) under the U.S. Environmental Protection Agency’s (EPA) Significant New Alternatives Policy (SNAP) program. The substitutes are for use in the following sectors: refrigeration and air conditioning, foam blowing, and fire suppression and explosion protection. The determinations concern new substitutes. DATES: This notice of acceptability is effective on March 29, 2006. ADDRESSES: EPA has established a docket for this action under Docket ID No. EPA–HQ–OAR–2003–0118 (continuation of Air Docket A–91–42). All electronic documents in the docket are listed in the index at https:// www.regulations.gov. Although listed in the index, some information is not publicly available, i.e., CBI or other information whose disclosure is restricted by statute. Publicly available docket materials are available either electronically at www.regulations.gov or in hard copy at the EPA Air Docket (No. A–91–42), EPA/DC, EPA West, Room B102, 1301 Constitution Ave., NW., Washington, DC. The Public Reading Room is open from 8:30 a.m. to 4:30 p.m., Monday through Friday, excluding legal holidays. The telephone number for the Public Reading Room is (202) 566–1744, and the telephone number for the Air Docket is (202) 566–1742. FOR FURTHER INFORMATION CONTACT: Evelyn Swain by telephone at (202) 343–9956, by facsimile at (202) 343– 2342, by e-mail at swain.evelyn@epa.gov, or by mail at U.S. Environmental Protection Agency, Mail Code 6205J, 1200 Pennsylvania Avenue, NW., Washington, DC 20460. Overnight or courier deliveries should be sent to the office location at 1310 L Street, NW., 8th floor, Washington, DC 20005. For more information on the Agency’s process for administering the SNAP program or criteria for evaluation of substitutes, refer to the original SNAP VerDate Aug<31>2005 15:34 Mar 28, 2006 Jkt 208001 I. Listing of New Acceptable Substitutes A. Refrigeration and Air Conditioning B. Foam Blowing C. Fire Suppression and Explosion Protection II. Section 612 Program A. Statutory Requirements B. Regulatory History Appendix A—Summary of Decisions for New Acceptable Substitutes I. Listing of New Acceptable Substitutes This section presents EPA’s most recent acceptable listing decisions for substitutes in the following industrial sectors: refrigeration and air conditioning, foam blowing, and fire suppression and explosion protection. For copies of the full list of ODS substitutes in all industrial sectors, visit EPA’s Ozone Depletion Web site at https://www.epa.gov/ozone/snap/lists/ index.html. The sections below discuss each substitute listing in detail. Appendix A contains a table summarizing today’s listing decisions for new substitutes. The statements in the ‘‘Further Information’’ column in the table provide additional information, but are not legally binding under section 612 of the Clean Air Act. In addition, the ‘‘further information’’ may not be a comprehensive list of other legal obligations you may need to meet when using the substitute. Although you are not required to follow recommendations in the ‘‘further information’’ column of the table to use a substitute, EPA strongly encourages you to apply the information when using these substitutes. In many instances, the information simply refers to standard operating practices in existing industry and/or building-code standards. Thus, many of these statements, if adopted, would not require significant changes to existing operating practices. Submissions to EPA for the use of the substitutes listed in this document may be found under category VI–D of EPA air docket A–91–42 at the address described above under ADDRESSES. You can find other materials supporting the decisions in this action under category IX–B of EPA docket A–91–42 and in edocket EPA–HQ–OAR–2003–0118 at https://www.regulations.gov. PO 00000 Frm 00033 Fmt 4700 Sfmt 4700 15589 A. Refrigeration and Air Conditioning 1. ICOR AT–22 EPA’s decision: ICOR AT–22 [R–125/ 290/134a/600a (55.0/1.0/42.5/1.5)] is acceptable for use in new and retrofit equipment as a substitute for HCFC–22 in: • Chillers (centrifugal, screw, reciprocating) • Industrial process refrigeration • Industrial process air conditioning • Retail food refrigeration • Cold storage warehouses • Refrigerated transport • Commercial ice machines • Ice skating rinks • Household refrigerators and freezers • Vending machines • Water coolers • Residential dehumidifiers • Non-mechanical heat transfer • Household and light commercial air conditioning and heat pumps • Very low temperature refrigeration ICOR AT–22 is a blend of 55.0% by weight HFC–125 (pentafluoroethane, Chemical Abstracts Service Registry Number (CAS) ID #354–33–6), 1.0% by weight R–290 (propane, CAS ID #74– 98–6), 42.5% by weight HFC–134a (1,1,1,2-tetrafluoroethane, CAS ID #811– 97–2), and 1.5% by weight isobutane (2methyl propane, CAS ID #75–28–5). You may find the submission under EPA Air Docket A–91–42, item VI–D– 310. Environmental information: The ozone depletion potential (ODP) of ICOR AT–22 is zero. The global warming potentials (GWPs) of HFC–125 and HFC–134a are 3450 and 1320, respectively (relative to carbon dioxide, using a 100-year time horizon (United Nations Environment Programme (UNEP)) and World Meteorological Organization ((WMO) Scientific Assessment of Ozone Depletion: 2002). The atmospheric lifetimes of these constituents are 29 and 14 years, respectively. HFC–125 and HFC–134a are excluded from the definition of volatile organic compound (VOC) under Clean Air Act regulations (see 40 CFR 51.100(s)) addressing the development of State implementation plans (SIPs) to attain and maintain the national ambient air quality standards. EPA is concerned with the relatively high GWP of this substitute. The contribution of this blend to greenhouse gas emissions will be minimized through the implementation of the venting prohibition under section 608 (c)(2) of the Clean Air Act (see 40 CFR, part 82, subpart F). This section and EPA’s implementing regulations E:\FR\FM\29MRR1.SGM 29MRR1 15590 Federal Register / Vol. 71, No. 60 / Wednesday, March 29, 2006 / Rules and Regulations hsrobinson on PROD1PC68 with RULES prohibit venting or release of substitutes for class I or class II ozone ODSs used in refrigeration and air conditioning and require proper handling, such as recycling or recovery, and disposal of these substances. Flammability information: While two of the blend components, isobutane and propane, are flammable, the blend as formulated and under worst case fractionated formulation scenarios is not flammable. Toxicity and exposure data: HFC–125 and HFC–134a have 8 hour/day, 40 hour/week workplace environmental exposure limits (WEELs) of 1000 ppm established by the American Industrial Hygiene Association (AIHA). Isobutane and propane have an 8 hour/day, 40 hour/week threshold limit value (TLV) established by the American Conference of Governmental Industrial Hygienists (ACGIH) of 1000 ppm and 2500 ppm, respectively. EPA recommends that users follow all requirements and recommendations specified in the Material Safety Data Sheet (MSDS) for the blend and the individual components and other safety precautions common in the refrigeration and air conditioning industry. EPA also recommends that users of ICOR AT–22 adhere to the AIHA’s WEELs and the ACGIH’s TLV. Comparison to other refrigerants: ICOR AT–22 is not an ozone depleter; thus, it poses a lower risk for ozone depletion than HCFC–22, the ozonedepleting substance (ODS) it replaces. ICOR AT–22 has a GWP of about 2500, slightly higher than other substitutes for HCFC–22. For example, the GWP of R– 407C is about 1700 and the GWP of R– 410A is about 2000. Flammability and toxicity risks are low, as discussed above. Thus, we find that ICOR AT–22 is acceptable because it does not pose a greater overall risk to public health and the environment in the end uses and applications listed above. 2. ICOR XLT1 (R–422C) EPA’s decision: ICOR XLT1 [R–125/ 134a/600a (82/15/3)] is acceptable for use in new and retrofit equipment as a substitute for HCFC–22, R–502, R–402A, R–402B, and R–408A in: • Chillers (centrifugal, screw, reciprocating) • Industrial process refrigeration • Industrial process air conditioning • Retail food refrigeration • Cold storage warehouses • Refrigerated transport • Commercial ice machines • Ice skating rinks • Household refrigerators and freezers • Vending machines • Water coolers VerDate Aug<31>2005 15:34 Mar 28, 2006 Jkt 208001 • Residential dehumidifiers • Non-mechanical heat transfer • Household and light commercial air conditioning and heat pumps • Very low temperature refrigeration ICOR XLT1 is a blend of 82% by weight HFC–125 (pentafluoroethane, CAS ID # 354–33–6), 15% by weight HFC–134a (1,1,1,2-tetrafluoroethane, CAS ID #811–97–2), and 3% by weight isobutane (2-methyl propane, CAS ID #75–28–5). The American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) Standard 34 has designated this blend as R–422C. You may find the submission under EPA Air Docket A– 91–42, item VI–D–313. Environmental information: The ODP of ICOR XLT1 is zero. For environmental information on the components of this blend see the section on environmental information above for ICOR AT–22. HFC–125 and HFC–134a are excluded from the definition of volatile organic compound (VOC) under Clean Air Act regulations (see 40 CFR 51.100(s)) addressing the development of State implementation plans (SIPs) to attain and maintain the national ambient air quality standards. EPA is concerned with the relatively high GWP of this substitute. The contribution of this blend to greenhouse gas emissions will be minimized through the implementation of the venting prohibition under section 608 (c)(2) of the Clean Air Act (see 40 CFR, part 82, subpart F). This section and EPA’s implementing regulations prohibit venting or release of substitutes for class I or class II ozone ODSs used in refrigeration and air conditioning and require proper handling, such as recycling or recovery, and disposal of these substances. Flammability information: While one component of the blend, isobutane, is flammable, the blend as formulated and under worst case fractionated formulation scenarios is not flammable. Toxicity and exposure data: For information on the workplace exposure limits for the components of this blend see the section toxicity and exposure data above for ICOR AT–22. EPA recommends that users follow all requirements and recommendations specified in the Material Safety Data Sheet (MSDS) for the blend and the individual components and other safety precautions common in the refrigeration and air conditioning industry. EPA also recommends that users of ICOR XLT1 adhere to the AIHA’s WEELs and the ACGIH’s TLV. Comparison to other refrigerants: ICOR–XLT1 is not an ozone depleter; PO 00000 Frm 00034 Fmt 4700 Sfmt 4700 thus, it poses a lower risk for ozone depletion than the ODSs it replaces. ICOR XLT1 has a GWP of about 3000, comparable to other substitutes for the ODSs listed above. For example, the GWP of R–407C is about 1700, the GWP of R–410A is about 2000, and the GWP of R–404A and R–507 are about 3900. Flammability and toxicity risks are low, as discussed above. Thus, we find that ICOR XLT1 is acceptable because there are no other substitutes that are currently or potentially available and that provide a substantially reduced risk to public health and the environment in the end uses listed. 3. ICOR XAC1 (R–422B) EPA’s decision: ICOR XAC1 [R–125/ 134a/600a (55/42/3)] is acceptable for use in new and retrofit equipment as a substitute for HCFC–22 in: • Chillers (centrifugal, screw, reciprocating) • Industrial process refrigeration • Industrial process air conditioning • Retail food refrigeration • Cold storage warehouses • Refrigerated transport • Commercial ice machines • Ice skating rinks • Household refrigerators and freezers • Vending machines • Water coolers • Residential dehumidifiers • Non-mechanical heat transfer • Household and light commercial air conditioning and heat pumps • Very low temperature refrigeration • Motor vehicle air conditioning (buses and passenger trains only) ICOR XAC1 is a blend of 55% by weight HFC–125 (pentafluoroethane, CAS ID # 354–33–6), 42% by weight HFC–134a (1,1,1,2-tetrafluoroethane, CAS ID #811–97–2), and 3% by weight isobutane (2-methyl propane, CAS ID #75–28–5). ASHRAE Standard 34 has designated this blend as R–422B. You may find the submission under EPA Air Docket A–91–42, item VI–D–312. Environmental information: The ODP of ICOR XAC1 is zero. For environmental information on the components of this blend see the section on environmental information above for ICOR AT–22. HFC–125 and HFC–134a are excluded from the definition of volatile organic compound (VOC) under Clean Air Act (see 40 CFR 51.100(s)) regulations addressing the development of State implementation plans (SIPs) to attain and maintain the national ambient air quality standards. EPA is concerned with the relatively high GWP of this substitute. The contribution of this blend to greenhouse E:\FR\FM\29MRR1.SGM 29MRR1 Federal Register / Vol. 71, No. 60 / Wednesday, March 29, 2006 / Rules and Regulations gas emissions will be minimized through the implementation of the venting prohibition under section 608 (c)(2) of the Clean Air Act (see 40 CFR, part 82, subpart F). This section and EPA’s implementing regulations prohibit venting or release of substitutes for class I or class II ODSs used in refrigeration and air conditioning and require proper handling, such as recycling or recovery, and disposal of these substances. Flammability information: While one component of the blend, isobutane, is flammable, the blend as formulated and under worst case fractionated formulation scenarios is not flammable. Toxicity and exposure data: For information on the workplace exposure limits for the components of this blend see the section toxicity and exposure data above for ICOR AT–22. EPA recommends that users follow all recommendations specified in the Material Safety Data Sheet (MSDS) for the blend and the individual components and other safety precautions common in the refrigeration and air conditioning industry. EPA also recommends that users of ICOR XAC1 adhere to the AIHA’s WEELs and the ACGIH’s TLV. Comparison to other refrigerants: ICOR XAC1 is not an ozone depleter; thus, it poses a lower risk for ozone depletion than HCFC–22, the ODS it replaces. ICOR XAC1 has a GWP of about 2500, slightly higher than other substitutes for HCFC–22. For example, the GWP of R–407C is about 1700 and the GWP of R–410A is about 2000. Flammability and toxicity risks are low, as discussed above. Thus, we find that ICOR XAC1 is acceptable because it does not pose a greater overall risk to public health and the environment in the end uses listed. hsrobinson on PROD1PC68 with RULES 4. R–417A EPA’s decision: R–417A [R–125/134a/ 600 (46.6/50.0/3.4)] is acceptable for use in new and retrofit equipment as a substitute for R–22 in: • Motor vehicle air conditioning (busses and passenger trains only) R–417A is a blend of 46.6 percent HFC–125 (pentafluoroethane, CAS ID #354–33–6), 50.0 percent HFC–134a (1,1,1,2-tetrafluoroethane, CAS ID #811– 97–2), and 3.4 percent n-butane (CAS ID #106–97–8). You can find the most recent submission in EPA Air Docket A– 91–42, item VI–D–286. In SNAP Notice of Acceptability #16 (March 22, 2002; 67 FR 13272), EPA noted that the composition of NU–22 was changed to match that of ISCEON 59, also known as R–417A, and that VerDate Aug<31>2005 15:34 Mar 28, 2006 Jkt 208001 EPA previously found ISCEON 59 acceptable as a substitute for R–22 in a number of end uses in SNAP Notice of Acceptability #11 (December 6, 1999; 64 FR 68039). R–417A is sold under the trade names NU–22 and ISCEON 59. In SNAP Notice of Acceptability #17 (December 20, 2002; 67 FR 77927), EPA found R–417A acceptable as a substitute for R–502 in several end uses. Today’s decision adds this refrigerant to the acceptable list for HCFC–22 in bus and passenger train motor vehicle air conditioners. Environmental information: For environmental information on HFC–125 and HFC–134a, see above in section I.A.1. for ICOR AT–22. The ozone depletion potential (ODP) of R–417A is zero. The GWP of butane is less than 10 (relative to carbon dioxide, using a 100year time horizon). Butane is a VOC under Clean Air Act regulations (see 40 CFR 51.100(s)) concerning the development of SIPs. Flammability information: While butane, one component of the blend, is flammable, the blend is not flammable. Toxicity and exposure data: HFC–125 and HFC–134a have guidance level WEELs of 1000 ppm established by the AIHA. Butane has a threshold limit value (TLV) of 800 ppm established by the American Conference of Government Industrial Hygienists (ACGIH). EPA recommends that users follow all recommendations specified in the Material Safety Data Sheet (MSDS) for the blend and the individual components and other safety precautions common in the refrigeration and air conditioning industry. EPA also recommends that users of R–417A will adhere to the AIHA’s WEELs and the ACGIH’s TLVs. Comparison to other refrigerants: R– 417A is not an ozone depleter; thus, it reduces risk from ozone depletion compared to R–22, the ODS it replaces. R–417A has a comparable or lower GWP than the other substitutes for R–22. Flammability and toxicity risks are low, as discussed above. Thus, we find that R–417A is acceptable because it does not pose a greater overall risk to public health and the environment in the end uses listed. 5. HFC–245fa (Genetron 245fa) EPA’s decision: HFC–245fa[Genetron 245fa] is acceptable for use in new and retrofit equipment as a substitute for CFC–11, CFC–113, CFC–114, HCFC–21, HCFC–123, and HCFC–141b in: • Low pressure centrifugal chillers • Non-mechanical heat transfer • Very low temperature refrigeration • Industrial process air conditioning • And industrial process refrigeration PO 00000 Frm 00035 Fmt 4700 Sfmt 4700 15591 Refer to the table in Appendix A for specific information as to which ODS HFC–245fa substitutes for in each end use. HFC–245fa is sold under the trade name of Genetron 245fa. HFC–245fa is also known as 1,1,1,3,3pentafluoropropane, Chemical Abstracts Service Registry Number (CAS ID #) 460–73–1. You may find the submission under EPA Air Docket A–91–42, item VI–D–316. Environmental information: ODP of HFC–245fa is zero. The GWP of HFC– 245fa is 950. The atmospheric lifetime of HFC–245fa is 7.2 years. HFC–245fa is excluded from the definition of a VOC under Clean Air Act regulations (see 40 CFR 51.100(s)) addressing the development of SIPs to attain and maintain the national ambient air quality standards. Flammability information: HFC–245fa is nonflammable. Toxicity and exposure data: EPA recommends that users follow all requirements and recommendations specified in the Material Safety Data Sheet (MSDS) for the blend and the individual components and other safety precautions common in the refrigeration and air conditioning industry. EPA also recommends that users of HFC–245fa adhere to the AIHA’s WEEL of 300 ppm (time weighted average for 8 hour/day, 40 hour/week). Comparison to other refrigerants: HFC–245fa is not an ozone depleter; thus, it poses a lower risk for ozone depletion than the ODSs it replaces. HFC–245fa has a lower GWP than the CFC refrigerants it replaces. HFC–245fa is non-flammable. HFC–245fa exhibits moderate to low toxicity and guidance is available from the AIHA and the ACGIH on its use in the workplace. Thus, we find that HFC–245fa is acceptable because it does not pose a greater overall risk to public health and the environment in the end uses listed. 6. R–420A EPA’s decision: R–420A is acceptable for use, subject to use conditions, in retrofit equipment as a substitute for CFC–12 in motor vehicle air conditioning. R–420A is a blend of 88% by weight HFC–134a (1,1,1,2-tetrafluoroethane, CAS ID #811–97–2), and 12% by weight HCFC–142b (1-chloro-1,1difluoroethane, CAS ID #75–68–3). Note that HCFC–142b is an ozone-depleting substance (ODS). Regulations regarding recycling and prohibiting venting issued under section 609 of the Clean Air Act apply to this blend. A common trade name for this refrigerant blend is Choice refrigerant. You may find the submission under EPA Air Docket A– E:\FR\FM\29MRR1.SGM 29MRR1 15592 Federal Register / Vol. 71, No. 60 / Wednesday, March 29, 2006 / Rules and Regulations 91–42, item VI–D–302 (or see e-docket EPA–HQ–OAR–2003–0118). R–420A was previously approved as a substitute refrigerant in other refrigeration and air conditioning end-uses in SNAP Notice 19 (69 FR 58905, October 4, 2004). Conditions for use in motor vehicle air conditioning systems: On October 16, 1996 (61 FR 54029), EPA promulgated a final rule that prospectively applied certain conditions on the use of any refrigerant used as a substitute for CFC– 12 in motor vehicle air conditioning systems (Appendix D of subpart G of 40 CFR part 82). That rule provided that EPA would list new refrigerants in future notices of acceptability. Therefore, the use of R–420A as a CFC– 12 substitute in motor vehicle air conditioning systems must follow the standard conditions imposed on previous refrigerants, including: • The use of unique fittings designed by the refrigerant manufacturer, hsrobinson on PROD1PC68 with RULES Low-side service port .................................................................................................................... High-side service port ................................................................................................................... Large containers (>20 lb.) ............................................................................................................. Small Cans .................................................................................................................................... VerDate Aug<31>2005 15:34 Mar 28, 2006 Jkt 208001 action restricting HCFC–142b and HCFC–22 in other industrial sectors. HCFC–142b and HFC–134a are excluded from the definition of VOC under Clean Air Act regulations (see 40 CFR 51.100(s)) addressing the development of SIPs to attain and maintain the national ambient air quality standards. Flammability information: Although the component HCFC–142b is moderately flammable, the blend is not flammable as formulated or under worst-case fractionated formulation scenarios. Toxicity and exposure data: HCFC– 142b and HFC–134a have 8 hour/day, 40 hour/week WEELs of 1000 ppm established by the AIHA. EPA recommends that users follow all recommendations specified in the MSDS for the blend and the individual components and other safety precautions common in the refrigeration and air conditioning industry. EPA also recommends that users of R–420A adhere to the AIHA’s WEELs. Comparison to other refrigerants: R– 420A has a lower ODP than that of the Class I ODS it replaces, CFC–12, and lower than that of other blends containing Class II ODS in this end use. R–420A has a comparable GWP to that of most other substitutes for CFC–12. Flammability and toxicity risks are low, as discussed above. Thus, we find that R–420A is acceptable as a substitute for CFC–12 in the end use listed. Although this substitute has an ozone depleting potential, the contribution of this blend to ozone depletion will be minimized through the implementation of the venting prohibition under section 608 (c) of the Clean Air Act (see 40 CFR, part 82, subpart F). This section and EPA’s implementing regulations prohibit venting or release of substitutes PO 00000 The October 16, 1996 rule gives full details on these use conditions. You must use the following fittings to use R–420A in motor vehicle air conditioning systems: Diameter (inches) Fitting type The labels will have a dark green background (PMS #347) and white text. Environmental information: The ODP of HCFC–142b is 0.065 and HFC–134a has an ODP of zero. The GWPs of HCFC–142b and HFC–134a are 2400 and 1320, respectively. The atmospheric lifetimes of these constituents are 17.9 and 14.0 years, respectively. Because R–420A contains an ODS, regulations on its use apply, including the requirements for technician certification, mandatory recovery of refrigerant during service of equipment containing R–420A, a requirement that sales of the refrigerants be made only to EPA-certified technicians, and the statutory prohibition under section 608(c) of the Clean Air Act against knowingly venting refrigerants. Production and/or import of HCFC– 142b is currently restricted to persons holding production and/or consumption allowances under 40 CFR part 82 subpart A. Hence, manufacturers and importers of R–420A may have difficulty obtaining adequate supply of the HCFC–142b component necessary to formulate the blend. HCFC–142b will be subject to further control beginning in 2010 when the next major milestone in the HCFC phaseout occurs and supplies may be further limited. As of January 1, 2010, production and import of HCFC– 22 or HCFC–142b will be limited to the purposes of use in equipment manufactured before January 1, 2010, transformation or destruction of the HCFC, or for export in accordance with 40 CFR Part 82 Subpart A. Thus, blends containing HCFC–142b such as R–420A are only transitional substitutes. EPA has proposed a rule prohibiting the use of HCFC–142b and HCFC–22 as ODS substitutes for foam blowing (70 FR 67120), and is considering similar • The application of a detailed label, • The removal of the original refrigerant prior to charging with R–420A, and • The installation of a high-pressure compressor cutoff switch on systems equipped with pressure relief devices. Frm 00036 Fmt 4700 Sfmt 4700 .5625 .5625 .5625 .5625 Thread pitch (threads/inch) (9/16) (9/16) (9/16) (9/16) 18 18 18 18 Thread direction Left. Right. Left. Right. for class I or class II ozone ODS used in refrigeration and air conditioning and require proper handling, such as recycling or recovery, and disposal of these substances. B. Foam Blowing 1. TranscendTM Technologies EPA’s decision: Transcend(TM) Technologies is acceptable, as an additive to other SNAP-approved foam blowing agents, in blends making up to 5% by weight of the total foam formulation, as a substitute for CFCs and HCFCs in the following end-uses: • Rigid polyurethane and polyisocyanurate laminated boardstock; • Rigid polyurethane appliance; • Rigid polyurethane, spray, commercial refrigeration, and sandwich • Rigid polyurethane slabstock and other foams; • Polyurethane integral skin foam; • Polyurethane: extruded sheet For the spray foam application within the rigid polyurethane, spray, commercial refrigeration, and sandwich end use, TranscendTM Technologies may only be used with other blowing agents that are SNAP-approved specifically for spray foam. It is not acceptable to use TranscendTM Technologies for saturated light hydrocarbons or for other blowing agents that are not SNAP-approved specifically for use in spray foam. The blowing agent blended with TranscendTM Technologies must be SNAP-approved for that specific end use. The submitter, Arkema Inc, claims that the composition of TranscendTM Technologies is confidential business information (see docket A–91–42, item VI–D–311). E:\FR\FM\29MRR1.SGM 29MRR1 hsrobinson on PROD1PC68 with RULES Federal Register / Vol. 71, No. 60 / Wednesday, March 29, 2006 / Rules and Regulations Environmental information: TranscendTM Technologies has no ODP and very low or zero GWP. Users should be aware that TranscendTM Technologies is considered a VOC under Clean Air Act regulations (see 40 CFR 51.100(s)) addressing the development of State implementation plans (SIPs) to attain and maintain the national ambient air quality standards. For more information refer to the manufacturer of TranscendTM Technologies, EPA regulations at 40 CFR part 51, and your state or local air quality agency. Flammability information: TranscendTM Technologies is flammable and should be handled with proper precautions. Use of TranscendTM Technologies will require safe handling and shipping as prescribed by OSHA and DOT (for example, using personal safety equipment and following requirements for shipping hazardous materials at 49 CFR parts 170 through 173). However, when blended with fire retardant and/or other SNAP-approved alternatives, the flammability of TranscendTM Technologies can be reduced to make a formulation that is either combustible or non-flammable (contact the manufacturer of TranscendTM Technologies for more information). For example, in blowingagent blends of 50% TranscendTM Technologies and 50% HFC–134a, or in blends of less than 97% TranscendTM Technologies and 3% or more HFC– 245fa, the resultant formulation is nonflammable. For information on the safety training requirements for use of flammable blowing agents in spray foam, refer to SNAP Notice of Acceptability 11 (64 FR 68039, December 6, 1999) or contact the EPA SNAP program. Toxicity and exposure data: TranscendTM Technologies should be handled with proper precautions. EPA recommends that users follow all recommendations specified in the MSDS for TranscendTM Technologies. OSHA has established a permissible exposure limit for the main component of TranscendTM Technologies of 200 ppm for a time-weighted average over an eight-hour work shift. Comparison to other foam blowing agents: TranscendTM Technologies is not an ozone depleter; thus, it reduces risk overall compared to the ODSs it replaces. TranscendTM Technologies has a comparable or lower GWP than the other substitutes for CFCs and HCFCs in these end uses. Thus, we find that TranscendTM Technologies is acceptable because it reduces overall risk to public health and the environment in the end uses listed. VerDate Aug<31>2005 15:34 Mar 28, 2006 Jkt 208001 C. Fire Suppression and Explosion Protection 1. Uni-light Advanced Fire Fighting Foam 1% (Uni-light AFFF 1%) EPA’s decision: Uni-light AFFF 1% is acceptable for use as a substitute for halon 1301 in the total flooding end use in both normally occupied and unoccupied spaces. Uni-light AFFF 1% is a water mist system with 1 percent (by mass) foam enhancement mixed with water. It is intended for use in machinery spaces onboard ships and off-shore installations. You may find the submission under Docket A–91–42, item VI–D–315 (or see e-docket EPA–HQ– OAR–2003–0118–116). EPA previously found water mist systems with potable water or natural sea water acceptable in total flooding (July 28, 1995; 60 FR 38729). In the same listing, EPA required that water mist systems containing additives different than those in potable water, and water mist systems comprised of mixtures in solution must be submitted to EPA for SNAP review on a case-bycase basis. With regard to a water mist and foam system, any changes to the foam mixture may constitute a new formulation and is, therefore, subject to SNAP review. Environmental information: All of the components of Uni-light AFFF 1% have an ozone depletion potential of zero. Its components have a negligible atmospheric lifetime and global warming potential. One component of Uni-light’s foam mixture, 2-(2-Butoxyethoxy) ethanol (also called diethylene glycol monobutyl ether, or DGBE, CAS ID# 112–34–5), is defined as a hazardous air pollutant (HAP) under the Clean Air Act. The component DGBE is also regulated as a controlled substance by the Toxic Substance Control Act (TSCA). Therefore, all materials used to clean spaces after an accidental should be handled and disposed of as hazardous waste in accordance with federal, state, or local requirements. Flammability: The blend is nonflammable. Toxicity and exposure data: The most toxic component of the foam blend, DGBE, has an occupational exposure limit, 8-hour time-weighted average, of 100 mg/m3 as a Maximum Concentration Value in the Workplace set by the Federal Republic of Germany. All but two components of the foam blend are classified as ‘‘generally recognized as safe’’ by the U.S. Food and Drug Administration. PO 00000 Frm 00037 Fmt 4700 Sfmt 4700 15593 As with other fire suppressants, EPA recommends that users minimize exposure to this agent. In order to keep exposure levels as low as possible, EPA recommends the following for establishments installing and maintaining total flooding systems: • Make self-contained breathing apparatus (SCBA) available in normally occupied areas; • Wear proper personal protection equipment (impervious butyl gloves, eye protection, and SCBA); • Clean up all spills immediately in accordance with good industrial hygiene practices; and • Provide training for safe handling procedures to all employees that would be likely to handle the containers of foam additive. Use of this agent should conform to relevant Occupational Safety and Health Administration (OSHA) requirements, including 29 CFR part 1910, subpart L, Sec. 1910.160 for fixed fire extinguishing systems, Sec. 1910.163 for water spray and foam systems and Sec. 1910.165 for predischarge employee alarms. Per OSHA requirements, protective gear (SCBA) should be available in the event of a discharge. Comparison to other fire suppressants: Uni-light AFFF 1% has no ODP; thus, its use will be less harmful to the atmosphere than the continued use of halon 1301. The components of Uni-light AFFF 1% have a GWP comparable with or lower than that of many other acceptable substitutes for halon 1301. Thus, we find that Uni-light AFFF 1% acceptable because it does not pose a greater overall risk to human health and the environment than other acceptable substitutes in the end uses and applications listed above. II. Section 612 Program A. Statutory Requirements Section 612 of the Clean Air Act authorizes EPA to develop a program for evaluating alternatives to ozonedepleting substances. We refer to this program as the Significant New Alternatives Policy (SNAP) program. The major provisions of section 612 are: • Rulemaking—Section 612(c) requires EPA to promulgate rules making it unlawful to replace any class I (chlorofluorocarbon, halon, carbon tetrachloride, methyl chloroform, and hydrobromofluorocarbon) or class II (hydrochlorofluorocarbon) substance with any substitute that the Administrator determines may present adverse effects to human health or the environment where the Administrator has identified an alternative that (1) E:\FR\FM\29MRR1.SGM 29MRR1 15594 Federal Register / Vol. 71, No. 60 / Wednesday, March 29, 2006 / Rules and Regulations reduces the overall risk to human health and the environment, and (2) is currently or potentially available. • Listing of Unacceptable/Acceptable Substitutes—Section 612(c) also requires EPA to publish a list of the substitutes unacceptable for specific uses. EPA must publish a corresponding list of acceptable alternatives for specific uses. • Petition Process—Section 612(d) grants the right to any person to petition EPA to add a substance to or delete a substance from the lists published in accordance with section 612(c). The Agency has 90 days to grant or deny a petition. Where the Agency grants the petition, it must publish the revised lists within an additional six months. • 90-day Notification—Section 612(e) directs EPA to require any person who produces a chemical substitute for a class I substance to notify the Agency not less than 90 days before new or existing chemicals are introduced into interstate commerce for significant new uses as substitutes for a class I substance. The producer must also provide the Agency with the producer’s unpublished health and safety studies on such substitutes. • Outreach—Section 612(b)(1) states that the Administrator shall seek to maximize the use of federal research facilities and resources to assist users of class I and II substances in identifying and developing alternatives to the use of such substances in key commercial applications. • Clearinghouse—Section 612(b)(4) requires the Agency to set up a public clearinghouse of alternative chemicals, product substitutes, and alternative manufacturing processes that are End-use available for products and manufacturing processes which use class I and II substances. B. Regulatory History On March 18, 1994, EPA published the final rulemaking (59 FR 13044) which described the process for administering the SNAP program. In the same notice, we issued the first acceptability lists for substitutes in the major industrial use sectors. These sectors include: • Refrigeration and air conditioning; • Foam blowing; • Solvents cleaning; • Fire suppression and explosion protection; • Sterilants; • Aerosols; • Adhesives, coatings and inks; and • Tobacco expansion. These sectors compose the principal industrial sectors that historically consumed the largest volumes of ozonedepleting compounds. As described in this original rule for the SNAP program, EPA does not believe that rulemaking procedures are required to list alternatives as acceptable with no limitations. Such listings do not impose any sanction, nor do they remove any prior license to use a substance. Therefore, by this notice we are adding substances to the list of acceptable alternatives without first requesting comment on new listings. However, we do believe that noticeand-comment rulemaking is required to place any substance on the list of prohibited substitutes, to list a substance as acceptable only under certain conditions, to list substances as acceptable only for certain uses, or to Substitute remove a substance from the lists of prohibited or acceptable substitutes. We publish updates to these lists as separate notices of rulemaking in the Federal Register. The Agency defines a ‘‘substitute’’ as any chemical, product substitute, or alternative manufacturing process, whether existing or new, intended for use as a replacement for a class I or class II substance. Anyone who produces a substitute must provide EPA with health and safety studies on the substitute at least 90 days before introducing it into interstate commerce for significant new use as an alternative. This requirement applies to substitute manufacturers, but may include importers, formulators, or end-users, when they are responsible for introducing a substitute into commerce. You can find a complete chronology of SNAP decisions and the appropriate Federal Register citations from the SNAP section of EPA’s Ozone Depletion World Wide Web site at https:// www.epa.gov/ozone/snap/chron.html. This information is also available from the Air Docket (see ADDRESSES section above for contact information). List of Subjects in 40 CFR Part 82 Environmental protection, Administrative practice and procedure, Air pollution control, Reporting and recordkeeping requirements. Dated: March 17, 2006. Brian J. McLean, Director, Office of Atmospheric Programs. Appendix A: Summary of Acceptable Decisions Decision Further information Refrigeration and Air Conditioning Motor vehicle air conditioning (retrofit). Motor vehicle air conditioning (new and retrofit) (busses and passenger trains only). hsrobinson on PROD1PC68 with RULES Industrial process refrigeration (retrofit and new). Industrial process air conditioning (retrofit and new). VerDate Aug<31>2005 17:29 Mar 28, 2006 R–420A as a substitute for CFC– 12. ICOR XAC1 (R–422B) as a substitute for HCFC–22. Acceptable Subject to Use Conditions. Acceptable. R–417A as a substitute for HCFC–22. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. HFC–245fa as a substitute for CFC–114. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. Acceptable. Jkt 208001 PO 00000 Frm 00038 Fmt 4700 Must be used with fittings and labels specified above. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Sfmt 4700 E:\FR\FM\29MRR1.SGM 29MRR1 Federal Register / Vol. 71, No. 60 / Wednesday, March 29, 2006 / Rules and Regulations End-use Substitute Ice skating rinks (retrofit and new) Cold storage warehouses (retrofit and new). Refrigerated transport (retrofit and new). Retail food refrigeration (retrofit and new). Vending new). machines (retrofit and Water coolers (retrofit and new) .... Commercial ice machines (retrofit and new). Household refrigerators and freezers (retrofit and new). hsrobinson on PROD1PC68 with RULES Centrifugal new). chillers (retrofit and Centrifugal chillers (new) ............... Reciprocating chillers (retrofit and new). VerDate Aug<31>2005 17:29 Mar 28, 2006 Decision ICOR XAC1 (R–422B) as a substitute for HCFC–22. HFC–245fa as a substitute for CFC–114. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. HFC–245fa as a substitute for CFC–114 and HCFC–123. HFC–245fa as a substitute for CFC–11. ICOR AT–22 as a substitute for HCFC–22. Jkt 208001 PO 00000 Frm 00039 Fmt 4700 Further information Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Sfmt 4700 E:\FR\FM\29MRR1.SGM 15595 29MRR1 15596 Federal Register / Vol. 71, No. 60 / Wednesday, March 29, 2006 / Rules and Regulations End-use Substitute Screw chillers (retrofit and new) .... Residential dehumidifiers (retrofit and new). Non-mechanical heat transfer (retrofit and new). Very low temperature refrigeration (retrofit and new). Very low temperature refrigeration (new). Household and light commercial air conditioning and heat pumps (retrofit and new). Decision Further information TranscendTM Technologies as an additive to other SNAP-approved foam blowing agents for this end use as substitutes for CFCs and HCFCs. TranscendTM Technologies as an additive to other SNAP-approved foam blowing agents for this end use as substitutes for CFCs and HCFCs. TranscendTM Technologies as an additive to other SNAP-approved foam blowing agents for this end use as substitutes for CFCs and HCFCs. Acceptable .................................... Decision only applies where the foam blowing blend makes up to 5% by weight of the total foam formulation. Acceptable .................................... Decision only applies where the foam blowing blend makes up to 5% by weight of the total foam formulation. Acceptable .................................... TranscendTM Technologies as an additive to other SNAP-approved foam blowing agents for this end use as substitutes for CFCs and HCFCs. Acceptable .................................... Decision only applies where the foam blowing blend makes up to 5% by weight of the total foam formulation. Follow manufacturers’ safety guidance for any flammable components in the blend. Decision only applies where the foam blowing blend makes up to 5% by weight of the total foam formulation. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. HFC–245fa as a substitute for CFC–11, CFC–113, HCFC–21, and HCFC–141b. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. HFC–245fa as a substitute for CFC–11, CFC–114, and HCFC–141b. ICOR AT–22 as a substitute for HCFC–22. ICOR XLT1 (R–422C) as a substitute for HCFC–22, R–502, R– 402A, R–402B, and R–408A. ICOR XAC1 (R–422B) as a substitute for HCFC–22. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Acceptable. Foam Blowing Rigid polyurethane and polyisocyanurate laminated boardstock. Rigid polyurethane appliance ........ hsrobinson on PROD1PC68 with RULES Rigid polyurethane, spray .............. Rigid polyurethane, commercial refrigeration and sandwich. VerDate Aug<31>2005 15:34 Mar 28, 2006 Jkt 208001 PO 00000 Frm 00040 Fmt 4700 Sfmt 4700 E:\FR\FM\29MRR1.SGM 29MRR1 Federal Register / Vol. 71, No. 60 / Wednesday, March 29, 2006 / Rules and Regulations 15597 End-use Substitute Decision Further information Rigid polyurethane slabstock and other foams. TranscendTM Technologies as an additive to other SNAP-approved foam blowing agents for this end use as substitutes for CFCs and HCFCs. TranscendTM Technologies as an additive to other SNAP-approved foam blowing agents for this end use as substitutes for CFCs and HCFCs. TranscendTM Technologies as an additive to other SNAP-approved foam blowing agents for this end use as substitutes for CFCs and HCFCs. Acceptable .................................... Decision only applies where the foam blowing blend makes up to 5% by weight of the total foam formulation. Acceptable .................................... Decision only applies where the foam blowing blend makes up to 5% by weight of the total foam formulation. Acceptable .................................... Decision only applies where the foam blowing blend makes up to 5% by weight of the total foam formulation. Polyurethane integral skin foam .... Polyurethane: extruded sheet ........ Fire Suppression and Explosion Protection Total flooding ................................. Uni-light AFFF 1% as a substitute for Halon 1301. [FR Doc. 06–3030 Filed 3–28–06; 8:45 am] BILLING CODE 6560–50–P ENVIRONMENTAL PROTECTION AGENCY 40 CFR Part 180 [EPA–HQ–OPP–2005–0299; FRL–7759–9] Trifloxystrobin; Pesticide Tolerance Environmental Protection Agency (EPA). ACTION: Final rule. hsrobinson on PROD1PC68 with RULES AGENCY: SUMMARY: This regulation establishes a tolerance for combined residues of trifloxystrobin (benzeneacetic acid, VerDate Aug<31>2005 15:34 Mar 28, 2006 Jkt 208001 Acceptable .................................... (E,E)-a-(methoxyimino)-2-[[[[1-[3(trifluoromethyl) phenyl]ethylidene]amino]oxy]methyl]-, methyl ester) and the free form of its acid metabolite CGA-321113 ((E,E)methoxyimino-[2-[1-(3trifluoromethylphenyl)ethylideneaminooxymethyl]phenyl]acetic acid) pesticide petition (PP 4F6892) in or on corn, sweet, kernel plus cob with husks removed at 0.04 parts per million (ppm), corn, sweet, forage at 0.6 ppm, corn, sweet, stover at 0.25 ppm, and corn, sweet, cannery waste at 0.6 ppm; (PP 3E6769) oat, forage at 0.3 ppm, oat, grain at 0.05 ppm, oat, hay at 0.3 ppm, oat, straw at 5.0 ppm, barley, grain at 0.05 ppm, barley, hay at 0.3 ppm, barley, straw at PO 00000 Frm 00041 Fmt 4700 Sfmt 4700 This agent is intended for use onboard ships and in off-shore installations. Appropriate personal protective equipment should be worn during manufacture or in the event of a release. Personal protective equipment should include safety goggles, protective gloves, and a self-contained breathing apparatus. Supply bottles for the foam should be clearly labeled with the potential hazards associated with the use of the chemicals in the foam, as well as handling procedures to reduce risk resulting from these hazards. Use should conform with relevant OSHA requirements, including 29 CFR part 1910, subpart L, §§ 1910.160 and 1910.163. EPA has no intention of duplicating or displacing OSHA coverage related to the use of personal protection equipment (e.g., respiratory protection), fire protection, hazard communication, worker training or any other occupational safety and health standard with respect to halon substitutes. 5.0 ppm. Bayer Crop Science requested this tolerance under the Federal Food, Drug, and Cosmetic Act (FFDCA), as amended by the Food Quality Protection Act of 1996 (FQPA). This regulation is effective March 29, 2006. Objections and requests for hearings must be received on or before May 30, 2006. DATES: To submit a written objection or hearing request follow the detailed instructions as provided in Unit VI. of the SUPPLEMENTARY INFORMATION. EPA has established a docket for this action under Docket identification (ID) number EPA–HQ– OPP–2005–0299. All documents in the docket are listed on the ADDRESSES: E:\FR\FM\29MRR1.SGM 29MRR1

Agencies

ENVIRONMENTAL PROTECTION AGENCY

[Federal Register Volume 71, Number 60 (Wednesday, March 29, 2006)]
[Rules and Regulations]
[Pages 15589-15597]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 06-3030]

[[Page 15589]]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 82

[EPA-HQ-OAR-2003-0118; FRL-8050-9]
RIN 2060-AG12

Protection of Stratospheric Ozone: Notice 20 for Significant New
Alternatives Policy Program

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice of acceptability.

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SUMMARY: This Notice of Acceptability expands the list of acceptable
substitutes for ozone-depleting substances (ODS) under the U.S.
Environmental Protection Agency's (EPA) Significant New Alternatives
Policy (SNAP) program. The substitutes are for use in the following
sectors: refrigeration and air conditioning, foam blowing, and fire
suppression and explosion protection. The determinations concern new
substitutes.

DATES: This notice of acceptability is effective on March 29, 2006.

ADDRESSES: EPA has established a docket for this action under Docket ID
No. EPA-HQ-OAR-2003-0118 (continuation of Air Docket A-91-42). All
electronic documents in the docket are listed in the index at https://
www.regulations.gov. Although listed in the index, some information is
not publicly available, i.e., CBI or other information whose disclosure
is restricted by statute. Publicly available docket materials are
available either electronically at www.regulations.gov or in hard copy
at the EPA Air Docket (No. A-91-42), EPA/DC, EPA West, Room B102, 1301
Constitution Ave., NW., Washington, DC. The Public Reading Room is open
from 8:30 a.m. to 4:30 p.m., Monday through Friday, excluding legal
holidays. The telephone number for the Public Reading Room is (202)
566-1744, and the telephone number for the Air Docket is (202) 566-
1742.

FOR FURTHER INFORMATION CONTACT: Evelyn Swain by telephone at (202)
343-9956, by facsimile at (202) 343-2342, by e-mail at
swain.evelyn@epa.gov, or by mail at U.S. Environmental Protection
Agency, Mail Code 6205J, 1200 Pennsylvania Avenue, NW., Washington, DC
20460. Overnight or courier deliveries should be sent to the office
location at 1310 L Street, NW., 8th floor, Washington, DC 20005.
For more information on the Agency's process for administering the
SNAP program or criteria for evaluation of substitutes, refer to the
original SNAP rulemaking published in the Federal Register on March 18,
1994 (59 FR 13044). Notices and rulemakings under the SNAP program, as
well as other EPA publications on protection of stratospheric ozone,
are available at EPA's Ozone Depletion World Wide Web site at https://
www.epa.gov/ozone/ including the SNAP portion at https://www.epa.gov/
ozone/snap/.

SUPPLEMENTARY INFORMATION:

I. Listing of New Acceptable Substitutes
A. Refrigeration and Air Conditioning
B. Foam Blowing
C. Fire Suppression and Explosion Protection
II. Section 612 Program
A. Statutory Requirements
B. Regulatory History
Appendix A--Summary of Decisions for New Acceptable Substitutes

I. Listing of New Acceptable Substitutes

This section presents EPA's most recent acceptable listing
decisions for substitutes in the following industrial sectors:
refrigeration and air conditioning, foam blowing, and fire suppression
and explosion protection. For copies of the full list of ODS
substitutes in all industrial sectors, visit EPA's Ozone Depletion Web
site at https://www.epa.gov/ozone/snap/lists/.
The sections below discuss each substitute listing in detail.
Appendix A contains a table summarizing today's listing decisions for
new substitutes. The statements in the ``Further Information'' column
in the table provide additional information, but are not legally
binding under section 612 of the Clean Air Act. In addition, the
``further information'' may not be a comprehensive list of other legal
obligations you may need to meet when using the substitute. Although
you are not required to follow recommendations in the ``further
information'' column of the table to use a substitute, EPA strongly
encourages you to apply the information when using these substitutes.
In many instances, the information simply refers to standard operating
practices in existing industry and/or building-code standards. Thus,
many of these statements, if adopted, would not require significant
changes to existing operating practices.
Submissions to EPA for the use of the substitutes listed in this
document may be found under category VI-D of EPA air docket A-91-42 at
the address described above under ADDRESSES. You can find other
materials supporting the decisions in this action under category IX-B
of EPA docket A-91-42 and in e-docket EPA-HQ-OAR-2003-0118 at https://
www.regulations.gov.

A. Refrigeration and Air Conditioning

1. ICOR AT-22
EPA's decision: ICOR AT-22 [R-125/290/134a/600a (55.0/1.0/42.5/
1.5)] is acceptable for use in new and retrofit equipment as a
substitute for HCFC-22 in:

Chillers (centrifugal, screw, reciprocating)
Industrial process refrigeration
Industrial process air conditioning
Retail food refrigeration
Cold storage warehouses
Refrigerated transport
Commercial ice machines
Ice skating rinks
Household refrigerators and freezers
Vending machines
Water coolers
Residential dehumidifiers
Non-mechanical heat transfer
Household and light commercial air conditioning and heat pumps
Very low temperature refrigeration

ICOR AT-22 is a blend of 55.0% by weight HFC-125
(pentafluoroethane, Chemical Abstracts Service Registry Number (CAS) ID
354-33-6), 1.0% by weight R-290 (propane, CAS ID 74-
98-6), 42.5% by weight HFC-134a (1,1,1,2-tetrafluoroethane, CAS ID
811-97-2), and 1.5% by weight isobutane (2-methyl propane, CAS
ID 75-28-5). You may find the submission under EPA Air Docket
A-91-42, item VI-D-310.
Environmental information: The ozone depletion potential (ODP) of
ICOR AT-22 is zero. The global warming potentials (GWPs) of HFC-125 and
HFC-134a are 3450 and 1320, respectively (relative to carbon dioxide,
using a 100-year time horizon (United Nations Environment Programme
(UNEP)) and World Meteorological Organization ((WMO) Scientific
Assessment of Ozone Depletion: 2002). The atmospheric lifetimes of
these constituents are 29 and 14 years, respectively.
HFC-125 and HFC-134a are excluded from the definition of volatile
organic compound (VOC) under Clean Air Act regulations (see 40 CFR
51.100(s)) addressing the development of State implementation plans
(SIPs) to attain and maintain the national ambient air quality
standards.
EPA is concerned with the relatively high GWP of this substitute.
The contribution of this blend to greenhouse gas emissions will be
minimized through the implementation of the venting prohibition under
section 608 (c)(2) of the Clean Air Act (see 40 CFR, part 82, subpart
F). This section and EPA's implementing regulations

[[Page 15590]]

prohibit venting or release of substitutes for class I or class II
ozone ODSs used in refrigeration and air conditioning and require
proper handling, such as recycling or recovery, and disposal of these
substances.
Flammability information: While two of the blend components,
isobutane and propane, are flammable, the blend as formulated and under
worst case fractionated formulation scenarios is not flammable.
Toxicity and exposure data: HFC-125 and HFC-134a have 8 hour/day,
40 hour/week workplace environmental exposure limits (WEELs) of 1000
ppm established by the American Industrial Hygiene Association (AIHA).
Isobutane and propane have an 8 hour/day, 40 hour/week threshold limit
value (TLV) established by the American Conference of Governmental
Industrial Hygienists (ACGIH) of 1000 ppm and 2500 ppm, respectively.
EPA recommends that users follow all requirements and recommendations
specified in the Material Safety Data Sheet (MSDS) for the blend and
the individual components and other safety precautions common in the
refrigeration and air conditioning industry. EPA also recommends that
users of ICOR AT-22 adhere to the AIHA's WEELs and the ACGIH's TLV.
Comparison to other refrigerants: ICOR AT-22 is not an ozone
depleter; thus, it poses a lower risk for ozone depletion than HCFC-22,
the ozone-depleting substance (ODS) it replaces. ICOR AT-22 has a GWP
of about 2500, slightly higher than other substitutes for HCFC-22. For
example, the GWP of R-407C is about 1700 and the GWP of R-410A is about
2000. Flammability and toxicity risks are low, as discussed above.
Thus, we find that ICOR AT-22 is acceptable because it does not pose a
greater overall risk to public health and the environment in the end
uses and applications listed above.
2. ICOR XLT1 (R-422C)
EPA's decision: ICOR XLT1 [R-125/134a/600a (82/15/3)] is acceptable
for use in new and retrofit equipment as a substitute for HCFC-22, R-
502, R-402A, R-402B, and R-408A in:
Chillers (centrifugal, screw, reciprocating)
Industrial process refrigeration
Industrial process air conditioning
Retail food refrigeration
Cold storage warehouses
Refrigerated transport
Commercial ice machines
Ice skating rinks
Household refrigerators and freezers
Vending machines
Water coolers
Residential dehumidifiers
Non-mechanical heat transfer
Household and light commercial air conditioning and heat pumps
Very low temperature refrigeration

ICOR XLT1 is a blend of 82% by weight HFC-125 (pentafluoroethane,
CAS ID 354-33-6), 15% by weight HFC-134a (1,1,1,2-
tetrafluoroethane, CAS ID 811-97-2), and 3% by weight
isobutane (2-methyl propane, CAS ID 75-28-5). The American
Society of Heating, Refrigerating, and Air Conditioning Engineers
(ASHRAE) Standard 34 has designated this blend as R-422C. You may find
the submission under EPA Air Docket A-91-42, item VI-D-313.
Environmental information: The ODP of ICOR XLT1 is zero. For
environmental information on the components of this blend see the
section on environmental information above for ICOR AT-22.
HFC-125 and HFC-134a are excluded from the definition of volatile
organic compound (VOC) under Clean Air Act regulations (see 40 CFR
51.100(s)) addressing the development of State implementation plans
(SIPs) to attain and maintain the national ambient air quality
standards.
EPA is concerned with the relatively high GWP of this substitute.
The contribution of this blend to greenhouse gas emissions will be
minimized through the implementation of the venting prohibition under
section 608 (c)(2) of the Clean Air Act (see 40 CFR, part 82, subpart
F). This section and EPA's implementing regulations prohibit venting or
release of substitutes for class I or class II ozone ODSs used in
refrigeration and air conditioning and require proper handling, such as
recycling or recovery, and disposal of these substances.
Flammability information: While one component of the blend,
isobutane, is flammable, the blend as formulated and under worst case
fractionated formulation scenarios is not flammable.
Toxicity and exposure data: For information on the workplace
exposure limits for the components of this blend see the section
toxicity and exposure data above for ICOR AT-22. EPA recommends that
users follow all requirements and recommendations specified in the
Material Safety Data Sheet (MSDS) for the blend and the individual
components and other safety precautions common in the refrigeration and
air conditioning industry. EPA also recommends that users of ICOR XLT1
adhere to the AIHA's WEELs and the ACGIH's TLV.
Comparison to other refrigerants: ICOR-XLT1 is not an ozone
depleter; thus, it poses a lower risk for ozone depletion than the ODSs
it replaces. ICOR XLT1 has a GWP of about 3000, comparable to other
substitutes for the ODSs listed above. For example, the GWP of R-407C
is about 1700, the GWP of R-410A is about 2000, and the GWP of R-404A
and R-507 are about 3900. Flammability and toxicity risks are low, as
discussed above. Thus, we find that ICOR XLT1 is acceptable because
there are no other substitutes that are currently or potentially
available and that provide a substantially reduced risk to public
health and the environment in the end uses listed.
3. ICOR XAC1 (R-422B)
EPA's decision: ICOR XAC1 [R-125/134a/600a (55/42/3)] is acceptable
for use in new and retrofit equipment as a substitute for HCFC-22 in:

ICOR XAC1 is a blend of 55% by weight HFC-125 (pentafluoroethane,
CAS ID 354-33-6), 42% by weight HFC-134a (1,1,1,2-
tetrafluoroethane, CAS ID 811-97-2), and 3% by weight
isobutane (2-methyl propane, CAS ID 75-28-5). ASHRAE Standard
34 has designated this blend as R-422B. You may find the submission
under EPA Air Docket A-91-42, item VI-D-312.
Environmental information: The ODP of ICOR XAC1 is zero. For
environmental information on the components of this blend see the
section on environmental information above for ICOR AT-22.
HFC-125 and HFC-134a are excluded from the definition of volatile
organic compound (VOC) under Clean Air Act (see 40 CFR 51.100(s))
regulations addressing the development of State implementation plans
(SIPs) to attain and maintain the national ambient air quality
standards.
EPA is concerned with the relatively high GWP of this substitute.
The contribution of this blend to greenhouse

[[Page 15591]]

gas emissions will be minimized through the implementation of the
venting prohibition under section 608 (c)(2) of the Clean Air Act (see
40 CFR, part 82, subpart F). This section and EPA's implementing
regulations prohibit venting or release of substitutes for class I or
class II ODSs used in refrigeration and air conditioning and require
proper handling, such as recycling or recovery, and disposal of these
substances.
Flammability information: While one component of the blend,
isobutane, is flammable, the blend as formulated and under worst case
fractionated formulation scenarios is not flammable.
Toxicity and exposure data: For information on the workplace
exposure limits for the components of this blend see the section
toxicity and exposure data above for ICOR AT-22. EPA recommends that
users follow all recommendations specified in the Material Safety Data
Sheet (MSDS) for the blend and the individual components and other
safety precautions common in the refrigeration and air conditioning
industry. EPA also recommends that users of ICOR XAC1 adhere to the
AIHA's WEELs and the ACGIH's TLV.
Comparison to other refrigerants: ICOR XAC1 is not an ozone
depleter; thus, it poses a lower risk for ozone depletion than HCFC-22,
the ODS it replaces. ICOR XAC1 has a GWP of about 2500, slightly higher
than other substitutes for HCFC-22. For example, the GWP of R-407C is
about 1700 and the GWP of R-410A is about 2000. Flammability and
toxicity risks are low, as discussed above. Thus, we find that ICOR
XAC1 is acceptable because it does not pose a greater overall risk to
public health and the environment in the end uses listed.
4. R-417A
EPA's decision: R-417A [R-125/134a/600 (46.6/50.0/3.4)] is
acceptable for use in new and retrofit equipment as a substitute for R-
22 in:

Motor vehicle air conditioning (busses and passenger trains
only)

R-417A is a blend of 46.6 percent HFC-125 (pentafluoroethane, CAS
ID 354-33-6), 50.0 percent HFC-134a (1,1,1,2-
tetrafluoroethane, CAS ID 811-97-2), and 3.4 percent n-butane
(CAS ID 106-97-8). You can find the most recent submission in
EPA Air Docket A-91-42, item VI-D-286.
In SNAP Notice of Acceptability 16 (March 22, 2002; 67 FR
13272), EPA noted that the composition of NU-22 was changed to match
that of ISCEON 59, also known as R-417A, and that EPA previously found
ISCEON 59 acceptable as a substitute for R-22 in a number of end uses
in SNAP Notice of Acceptability 11 (December 6, 1999; 64 FR
68039). R-417A is sold under the trade names NU-22 and ISCEON 59. In
SNAP Notice of Acceptability 17 (December 20, 2002; 67 FR
77927), EPA found R-417A acceptable as a substitute for R-502 in
several end uses. Today's decision adds this refrigerant to the
acceptable list for HCFC-22 in bus and passenger train motor vehicle
air conditioners.
Environmental information: For environmental information on HFC-125
and HFC-134a, see above in section I.A.1. for ICOR AT-22. The ozone
depletion potential (ODP) of R-417A is zero. The GWP of butane is less
than 10 (relative to carbon dioxide, using a 100-year time horizon).
Butane is a VOC under Clean Air Act regulations (see 40 CFR 51.100(s))
concerning the development of SIPs.
Flammability information: While butane, one component of the blend,
is flammable, the blend is not flammable.
Toxicity and exposure data: HFC-125 and HFC-134a have guidance
level WEELs of 1000 ppm established by the AIHA. Butane has a threshold
limit value (TLV) of 800 ppm established by the American Conference of
Government Industrial Hygienists (ACGIH). EPA recommends that users
follow all recommendations specified in the Material Safety Data Sheet
(MSDS) for the blend and the individual components and other safety
precautions common in the refrigeration and air conditioning industry.
EPA also recommends that users of R-417A will adhere to the AIHA's
WEELs and the ACGIH's TLVs.
Comparison to other refrigerants: R-417A is not an ozone depleter;
thus, it reduces risk from ozone depletion compared to R-22, the ODS it
replaces. R-417A has a comparable or lower GWP than the other
substitutes for R-22. Flammability and toxicity risks are low, as
discussed above. Thus, we find that R-417A is acceptable because it
does not pose a greater overall risk to public health and the
environment in the end uses listed.
5. HFC-245fa (Genetron[supreg] 245fa)
EPA's decision: HFC-245fa[Genetron[supreg] 245fa] is acceptable for
use in new and retrofit equipment as a substitute for CFC-11, CFC-113,
CFC-114, HCFC-21, HCFC-123, and HCFC-141b in:

Low pressure centrifugal chillers
Non-mechanical heat transfer
Very low temperature refrigeration
Industrial process air conditioning
And industrial process refrigeration

Refer to the table in Appendix A for specific information as to
which ODS HFC-245fa substitutes for in each end use. HFC-245fa is sold
under the trade name of Genetron[supreg] 245fa. HFC-245fa is also known
as 1,1,1,3,3-pentafluoropropane, Chemical Abstracts Service Registry
Number (CAS ID ) 460-73-1. You may find the submission under
EPA Air Docket A-91-42, item VI-D-316.
Environmental information: ODP of HFC-245fa is zero. The GWP of
HFC-245fa is 950. The atmospheric lifetime of HFC-245fa is 7.2 years.
HFC-245fa is excluded from the definition of a VOC under Clean Air
Act regulations (see 40 CFR 51.100(s)) addressing the development of
SIPs to attain and maintain the national ambient air quality standards.
Flammability information: HFC-245fa is nonflammable.
Toxicity and exposure data: EPA recommends that users follow all
requirements and recommendations specified in the Material Safety Data
Sheet (MSDS) for the blend and the individual components and other
safety precautions common in the refrigeration and air conditioning
industry. EPA also recommends that users of HFC-245fa adhere to the
AIHA's WEEL of 300 ppm (time weighted average for 8 hour/day, 40 hour/
week).
Comparison to other refrigerants: HFC-245fa is not an ozone
depleter; thus, it poses a lower risk for ozone depletion than the ODSs
it replaces. HFC-245fa has a lower GWP than the CFC refrigerants it
replaces. HFC-245fa is non-flammable. HFC-245fa exhibits moderate to
low toxicity and guidance is available from the AIHA and the ACGIH on
its use in the workplace. Thus, we find that HFC-245fa is acceptable
because it does not pose a greater overall risk to public health and
the environment in the end uses listed.
6. R-420A
EPA's decision: R-420A is acceptable for use, subject to use
conditions, in retrofit equipment as a substitute for CFC-12 in motor
vehicle air conditioning.
R-420A is a blend of 88% by weight HFC-134a (1,1,1,2-
tetrafluoroethane, CAS ID 811-97-2), and 12% by weight HCFC-
142b (1-chloro-1,1-difluoroethane, CAS ID 75-68-3). Note that
HCFC-142b is an ozone-depleting substance (ODS). Regulations regarding
recycling and prohibiting venting issued under section 609 of the Clean
Air Act apply to this blend. A common trade name for this refrigerant
blend is Choice refrigerant. You may find the submission under EPA Air
Docket A-

[[Page 15592]]

91-42, item VI-D-302 (or see e-docket EPA-HQ-OAR-2003-0118). R-420A was
previously approved as a substitute refrigerant in other refrigeration
and air conditioning end-uses in SNAP Notice 19 (69 FR 58905, October
4, 2004).
Conditions for use in motor vehicle air conditioning systems: On
October 16, 1996 (61 FR 54029), EPA promulgated a final rule that
prospectively applied certain conditions on the use of any refrigerant
used as a substitute for CFC-12 in motor vehicle air conditioning
systems (Appendix D of subpart G of 40 CFR part 82). That rule provided
that EPA would list new refrigerants in future notices of
acceptability. Therefore, the use of R-420A as a CFC-12 substitute in
motor vehicle air conditioning systems must follow the standard
conditions imposed on previous refrigerants, including:

The use of unique fittings designed by the refrigerant
manufacturer,
The application of a detailed label,
The removal of the original refrigerant prior to charging with
R-420A, and
The installation of a high-pressure compressor cutoff switch
on systems equipped with pressure relief devices.

The October 16, 1996 rule gives full details on these use
conditions.
You must use the following fittings to use R-420A in motor vehicle
air conditioning systems:

----------------------------------------------------------------------------------------------------------------
Diameter Thread pitch
Fitting type (inches) (threads/inch) Thread direction
----------------------------------------------------------------------------------------------------------------
Low-side service port........................ .5625 (9/16) 18 Left.
High-side service port....................... .5625 (9/16) 18 Right.
Large containers (>20 lb.)................... .5625 (9/16) 18 Left.
Small Cans................................... .5625 (9/16) 18 Right.
----------------------------------------------------------------------------------------------------------------

The labels will have a dark green background (PMS 347) and
white text.
Environmental information: The ODP of HCFC-142b is 0.065 and HFC-
134a has an ODP of zero. The GWPs of HCFC-142b and HFC-134a are 2400
and 1320, respectively. The atmospheric lifetimes of these constituents
are 17.9 and 14.0 years, respectively.
Because R-420A contains an ODS, regulations on its use apply,
including the requirements for technician certification, mandatory
recovery of refrigerant during service of equipment containing R-420A,
a requirement that sales of the refrigerants be made only to EPA-
certified technicians, and the statutory prohibition under section
608(c) of the Clean Air Act against knowingly venting refrigerants.
Production and/or import of HCFC-142b is currently restricted to
persons holding production and/or consumption allowances under 40 CFR
part 82 subpart A. Hence, manufacturers and importers of R-420A may
have difficulty obtaining adequate supply of the HCFC-142b component
necessary to formulate the blend. HCFC-142b will be subject to further
control beginning in 2010 when the next major milestone in the HCFC
phaseout occurs and supplies may be further limited. As of January 1,
2010, production and import of HCFC-22 or HCFC-142b will be limited to
the purposes of use in equipment manufactured before January 1, 2010,
transformation or destruction of the HCFC, or for export in accordance
with 40 CFR Part 82 Subpart A. Thus, blends containing HCFC-142b such
as R-420A are only transitional substitutes. EPA has proposed a rule
prohibiting the use of HCFC-142b and HCFC-22 as ODS substitutes for
foam blowing (70 FR 67120), and is considering similar action
restricting HCFC-142b and HCFC-22 in other industrial sectors.
HCFC-142b and HFC-134a are excluded from the definition of VOC
under Clean Air Act regulations (see 40 CFR 51.100(s)) addressing the
development of SIPs to attain and maintain the national ambient air
quality standards.
Flammability information: Although the component HCFC-142b is
moderately flammable, the blend is not flammable as formulated or under
worst-case fractionated formulation scenarios.
Toxicity and exposure data: HCFC-142b and HFC-134a have 8 hour/day,
40 hour/week WEELs of 1000 ppm established by the AIHA. EPA recommends
that users follow all recommendations specified in the MSDS for the
blend and the individual components and other safety precautions common
in the refrigeration and air conditioning industry. EPA also recommends
that users of R-420A adhere to the AIHA's WEELs.
Comparison to other refrigerants: R-420A has a lower ODP than that
of the Class I ODS it replaces, CFC-12, and lower than that of other
blends containing Class II ODS in this end use. R-420A has a comparable
GWP to that of most other substitutes for CFC-12. Flammability and
toxicity risks are low, as discussed above. Thus, we find that R-420A
is acceptable as a substitute for CFC-12 in the end use listed.
Although this substitute has an ozone depleting potential, the
contribution of this blend to ozone depletion will be minimized through
the implementation of the venting prohibition under section 608 (c) of
the Clean Air Act (see 40 CFR, part 82, subpart F). This section and
EPA's implementing regulations prohibit venting or release of
substitutes for class I or class II ozone ODS used in refrigeration and
air conditioning and require proper handling, such as recycling or
recovery, and disposal of these substances.

B. Foam Blowing

1. Transcend^TM Technologies
EPA's decision: Transcend(^TM) Technologies is
acceptable, as an additive to other SNAP-approved foam blowing agents,
in blends making up to 5% by weight of the total foam formulation, as a
substitute for CFCs and HCFCs in the following end-uses:

Rigid polyurethane and polyisocyanurate laminated boardstock;
Rigid polyurethane appliance;
Rigid polyurethane, spray, commercial refrigeration, and
sandwich
Rigid polyurethane slabstock and other foams;
Polyurethane integral skin foam;
Polyurethane: extruded sheet

For the spray foam application within the rigid polyurethane,
spray, commercial refrigeration, and sandwich end use,
Transcend^TM Technologies may only be used with other blowing
agents that are SNAP-approved specifically for spray foam. It is not
acceptable to use Transcend^TM Technologies for saturated
light hydrocarbons or for other blowing agents that are not SNAP-
approved specifically for use in spray foam. The blowing agent blended
with Transcend^TM Technologies must be SNAP-approved for that
specific end use.
The submitter, Arkema Inc, claims that the composition of
Transcend^TM Technologies is confidential business
information (see docket A-91-42, item VI-D-311).

[[Page 15593]]

Environmental information: Transcend^TM Technologies has
no ODP and very low or zero GWP. Users should be aware that
Transcend^TM Technologies is considered a VOC under Clean Air
Act regulations (see 40 CFR 51.100(s)) addressing the development of
State implementation plans (SIPs) to attain and maintain the national
ambient air quality standards. For more information refer to the
manufacturer of Transcend^TM Technologies, EPA regulations at
40 CFR part 51, and your state or local air quality agency.
Flammability information: Transcend^TM Technologies is
flammable and should be handled with proper precautions. Use of
Transcend^TM Technologies will require safe handling and
shipping as prescribed by OSHA and DOT (for example, using personal
safety equipment and following requirements for shipping hazardous
materials at 49 CFR parts 170 through 173). However, when blended with
fire retardant and/or other SNAP-approved alternatives, the
flammability of Transcend^TM Technologies can be reduced to
make a formulation that is either combustible or non-flammable (contact
the manufacturer of Transcend^TM Technologies for more
information). For example, in blowing-agent blends of 50%
Transcend^TM Technologies and 50% HFC-134a, or in blends of
less than 97% Transcend^TM Technologies and 3% or more HFC-
245fa, the resultant formulation is nonflammable.
For information on the safety training requirements for use of
flammable blowing agents in spray foam, refer to SNAP Notice of
Acceptability 11 (64 FR 68039, December 6, 1999) or contact the EPA
SNAP program.
Toxicity and exposure data: Transcend^TM Technologies
should be handled with proper precautions. EPA recommends that users
follow all recommendations specified in the MSDS for
Transcend^TM Technologies. OSHA has established a permissible
exposure limit for the main component of Transcend^TM
Technologies of 200 ppm for a time-weighted average over an eight-hour
work shift.
Comparison to other foam blowing agents: Transcend^TM
Technologies is not an ozone depleter; thus, it reduces risk overall
compared to the ODSs it replaces. Transcend^TM Technologies
has a comparable or lower GWP than the other substitutes for CFCs and
HCFCs in these end uses. Thus, we find that Transcend^TM
Technologies is acceptable because it reduces overall risk to public
health and the environment in the end uses listed.

C. Fire Suppression and Explosion Protection

1. Uni-light Advanced Fire Fighting Foam 1% (Uni-light AFFF 1%)
EPA's decision: Uni-light AFFF 1% is acceptable for use as a
substitute for halon 1301 in the total flooding end use in both
normally occupied and unoccupied spaces.
Uni-light AFFF 1% is a water mist system with 1 percent (by mass)
foam enhancement mixed with water. It is intended for use in machinery
spaces onboard ships and off-shore installations. You may find the
submission under Docket A-91-42, item VI-D-315 (or see e-docket EPA-HQ-
OAR-2003-0118-116).
EPA previously found water mist systems with potable water or
natural sea water acceptable in total flooding (July 28, 1995; 60 FR
38729). In the same listing, EPA required that water mist systems
containing additives different than those in potable water, and water
mist systems comprised of mixtures in solution must be submitted to EPA
for SNAP review on a case-by-case basis. With regard to a water mist
and foam system, any changes to the foam mixture may constitute a new
formulation and is, therefore, subject to SNAP review.
Environmental information: All of the components of Uni-light AFFF
1% have an ozone depletion potential of zero. Its components have a
negligible atmospheric lifetime and global warming potential.
One component of Uni-light's foam mixture, 2-(2-Butoxyethoxy)
ethanol (also called diethylene glycol monobutyl ether, or DGBE, CAS
ID 112-34-5), is defined as a hazardous air pollutant (HAP)
under the Clean Air Act.
The component DGBE is also regulated as a controlled substance by
the Toxic Substance Control Act (TSCA). Therefore, all materials used
to clean spaces after an accidental should be handled and disposed of
as hazardous waste in accordance with federal, state, or local
requirements.
Flammability: The blend is non-flammable.
Toxicity and exposure data: The most toxic component of the foam
blend, DGBE, has an occupational exposure limit, 8-hour time-weighted
average, of 100 mg/m\3\ as a Maximum Concentration Value in the
Workplace set by the Federal Republic of Germany. All but two
components of the foam blend are classified as ``generally recognized
as safe'' by the U.S. Food and Drug Administration.
As with other fire suppressants, EPA recommends that users minimize
exposure to this agent. In order to keep exposure levels as low as
possible, EPA recommends the following for establishments installing
and maintaining total flooding systems:

Make self-contained breathing apparatus (SCBA) available
in normally occupied areas;
Wear proper personal protection equipment (impervious
butyl gloves, eye protection, and SCBA);
Clean up all spills immediately in accordance with good
industrial hygiene practices; and
Provide training for safe handling procedures to all
employees that would be likely to handle the containers of foam
additive.
Use of this agent should conform to relevant Occupational Safety
and Health Administration (OSHA) requirements, including 29 CFR part
1910, subpart L, Sec. 1910.160 for fixed fire extinguishing systems,
Sec. 1910.163 for water spray and foam systems and Sec. 1910.165 for
predischarge employee alarms. Per OSHA requirements, protective gear
(SCBA) should be available in the event of a discharge.
Comparison to other fire suppressants: Uni-light AFFF 1% has no
ODP; thus, its use will be less harmful to the atmosphere than the
continued use of halon 1301. The components of Uni-light AFFF 1% have a
GWP comparable with or lower than that of many other acceptable
substitutes for halon 1301. Thus, we find that Uni-light AFFF 1%
acceptable because it does not pose a greater overall risk to human
health and the environment than other acceptable substitutes in the end
uses and applications listed above.

II. Section 612 Program

A. Statutory Requirements

Section 612 of the Clean Air Act authorizes EPA to develop a
program for evaluating alternatives to ozone-depleting substances. We
refer to this program as the Significant New Alternatives Policy (SNAP)
program. The major provisions of section 612 are:
Rulemaking--Section 612(c) requires EPA to promulgate
rules making it unlawful to replace any class I (chlorofluorocarbon,
halon, carbon tetrachloride, methyl chloroform, and
hydrobromofluorocarbon) or class II (hydrochlorofluorocarbon) substance
with any substitute that the Administrator determines may present
adverse effects to human health or the environment where the
Administrator has identified an alternative that (1)

[[Page 15594]]

reduces the overall risk to human health and the environment, and (2)
is currently or potentially available.
Listing of Unacceptable/Acceptable Substitutes--Section
612(c) also requires EPA to publish a list of the substitutes
unacceptable for specific uses. EPA must publish a corresponding list
of acceptable alternatives for specific uses.
Petition Process--Section 612(d) grants the right to any
person to petition EPA to add a substance to or delete a substance from
the lists published in accordance with section 612(c). The Agency has
90 days to grant or deny a petition. Where the Agency grants the
petition, it must publish the revised lists within an additional six
months.
90-day Notification--Section 612(e) directs EPA to require
any person who produces a chemical substitute for a class I substance
to notify the Agency not less than 90 days before new or existing
chemicals are introduced into interstate commerce for significant new
uses as substitutes for a class I substance. The producer must also
provide the Agency with the producer's unpublished health and safety
studies on such substitutes.
Outreach--Section 612(b)(1) states that the Administrator
shall seek to maximize the use of federal research facilities and
resources to assist users of class I and II substances in identifying
and developing alternatives to the use of such substances in key
commercial applications.
Clearinghouse--Section 612(b)(4) requires the Agency to
set up a public clearinghouse of alternative chemicals, product
substitutes, and alternative manufacturing processes that are available
for products and manufacturing processes which use class I and II
substances.

B. Regulatory History

On March 18, 1994, EPA published the final rulemaking (59 FR 13044)
which described the process for administering the SNAP program. In the
same notice, we issued the first acceptability lists for substitutes in
the major industrial use sectors. These sectors include:
Refrigeration and air conditioning;
Foam blowing;
Solvents cleaning;
Fire suppression and explosion protection;
Sterilants;
Aerosols;
Adhesives, coatings and inks; and
Tobacco expansion.

These sectors compose the principal industrial sectors that
historically consumed the largest volumes of ozone-depleting compounds.
As described in this original rule for the SNAP program, EPA does
not believe that rulemaking procedures are required to list
alternatives as acceptable with no limitations. Such listings do not
impose any sanction, nor do they remove any prior license to use a
substance. Therefore, by this notice we are adding substances to the
list of acceptable alternatives without first requesting comment on new
listings.
However, we do believe that notice-and-comment rulemaking is
required to place any substance on the list of prohibited substitutes,
to list a substance as acceptable only under certain conditions, to
list substances as acceptable only for certain uses, or to remove a
substance from the lists of prohibited or acceptable substitutes. We
publish updates to these lists as separate notices of rulemaking in the
Federal Register.
The Agency defines a ``substitute'' as any chemical, product
substitute, or alternative manufacturing process, whether existing or
new, intended for use as a replacement for a class I or class II
substance. Anyone who produces a substitute must provide EPA with
health and safety studies on the substitute at least 90 days before
introducing it into interstate commerce for significant new use as an
alternative. This requirement applies to substitute manufacturers, but
may include importers, formulators, or end-users, when they are
responsible for introducing a substitute into commerce.
You can find a complete chronology of SNAP decisions and the
appropriate Federal Register citations from the SNAP section of EPA's
Ozone Depletion World Wide Web site at https://www.epa.gov/ozone/snap/
chron.html. This information is also available from the Air Docket (see
ADDRESSES section above for contact information).

List of Subjects in 40 CFR Part 82

Environmental protection, Administrative practice and procedure,
Air pollution control, Reporting and recordkeeping requirements.

Dated: March 17, 2006.
Brian J. McLean,
Director, Office of Atmospheric Programs.

Appendix A: Summary of Acceptable Decisions

----------------------------------------------------------------------------------------------------------------
End-use Substitute Decision Further information
----------------------------------------------------------------------------------------------------------------
Refrigeration and Air Conditioning
----------------------------------------------------------------------------------------------------------------
Motor vehicle air conditioning R-420A as a substitute Acceptable Subject to Must be used with
(retrofit). for CFC-12. Use Conditions. fittings and labels
specified above.
Motor vehicle air conditioning (new ICOR XAC1 (R-422B) as a Acceptable.............
and retrofit) (busses and passenger substitute for HCFC-22.
trains only).
R-417A as a substitute Acceptable.............
for HCFC-22.
Industrial process refrigeration ICOR AT-22 as a Acceptable.............
(retrofit and new). substitute for HCFC-22.
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
HFC-245fa as a Acceptable.............
substitute for CFC-114.
Industrial process air conditioning ICOR AT-22 as a Acceptable.............
(retrofit and new). substitute for HCFC-22.
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.

[[Page 15595]]

ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
HFC-245fa as a Acceptable.............
substitute for CFC-114.
Ice skating rinks (retrofit and new). ICOR AT-22 as a Acceptable.............
substitute for HCFC-22.
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
Cold storage warehouses (retrofit and ICOR AT-22 as a Acceptable.............
new). substitute for HCFC-22.
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
Refrigerated transport (retrofit and ICOR AT-22 as a Acceptable.............
new). substitute for HCFC-22.
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
Retail food refrigeration (retrofit ICOR AT-22 as a Acceptable.............
and new). substitute for HCFC-22.
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
Vending machines (retrofit and new).. ICOR AT-22 as a Acceptable.............
substitute for HCFC-22.
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
Water coolers (retrofit and new)..... ICOR AT-22 as a Acceptable.............
substitute for HCFC-22.
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
Commercial ice machines (retrofit and ICOR AT-22 as a Acceptable.............
new). substitute for HCFC-22.
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
Household refrigerators and freezers ICOR AT-22 as a Acceptable.............
(retrofit and new). substitute for HCFC-22.
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
Centrifugal chillers (retrofit and ICOR AT-22 as a Acceptable.............
new). substitute for HCFC-22.
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
HFC-245fa as a Acceptable.............
substitute for CFC-114
and HCFC-123.
Centrifugal chillers (new)........... HFC-245fa as a Acceptable.............
substitute for CFC-11.
Reciprocating chillers (retrofit and ICOR AT-22 as a Acceptable.............
new). substitute for HCFC-22.

[[Page 15596]]

ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
Screw chillers (retrofit and new).... ICOR AT-22 as a Acceptable.............
substitute for HCFC-22.
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
Residential dehumidifiers (retrofit ICOR AT-22 as a Acceptable.............
and new). substitute for HCFC-22.
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
Non-mechanical heat transfer ICOR AT-22 as a Acceptable.............
(retrofit and new). substitute for HCFC-22.
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
HFC-245fa as a Acceptable.............
substitute for CFC-11,
CFC-113, HCFC-21, and
HCFC-141b.
Very low temperature refrigeration ICOR AT-22 as a Acceptable.............
(retrofit and new). substitute for HCFC-22.
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
Very low temperature refrigeration HFC-245fa as a Acceptable.............
(new). substitute for CFC-11,
CFC-114, and HCFC-141b.
Household and light commercial air ICOR AT-22 as a Acceptable.............
conditioning and heat pumps substitute for HCFC-22.
(retrofit and new).
ICOR XLT1 (R-422C) as a Acceptable.............
substitute for HCFC-
22, R-502, R-402A, R-
402B, and R-408A.
ICOR XAC1 (R-422B) as a Acceptable.............
substitute for HCFC-22.
----------------------------------------------------------------------------------------------------------------
Foam Blowing
----------------------------------------------------------------------------------------------------------------
Rigid polyurethane and TranscendTM Acceptable............. Decision only applies
polyisocyanurate laminated Technologies as an where the foam blowing
boardstock. additive to other SNAP- blend makes up to 5%
approved foam blowing by weight of the total
agents for this end foam formulation.
use as substitutes for
CFCs and HCFCs.
Rigid polyurethane appliance......... TranscendTM Acceptable............. Decision only applies
Technologies as an where the foam blowing
additive to other SNAP- blend makes up to 5%
approved foam blowing by weight of the total
agents for this end foam formulation.
use as substitutes for
CFCs and HCFCs.
Rigid polyurethane, spray............ TranscendTM Acceptable............. Decision only applies
Technologies as an where the foam blowing
additive to other SNAP- blend makes up to 5%
approved foam blowing by weight of the total
agents for this end foam formulation.
use as substitutes for Follow manufacturers'
CFCs and HCFCs. safety guidance for
any flammable
components in the
blend.
Rigid polyurethane, commercial TranscendTM Acceptable............. Decision only applies
refrigeration and sandwich. Technologies as an where the foam blowing
additive to other SNAP- blend makes up to 5%
approved foam blowing by weight of the total
agents for this end foam formulation.
use as substitutes for
CFCs and HCFCs.

[[Page 15597]]

Rigid polyurethane slabstock and TranscendTM Acceptable............. Decision only applies
other foams. Technologies as an where the foam blowing
additive to other SNAP- blend makes up to 5%
approved foam blowing by weight of the total
agents for this end foam formulation.
use as substitutes for
CFCs and HCFCs.
Polyurethane integral skin foam...... TranscendTM Acceptable............. Decision only applies
Technologies as an where the foam blowing
additive to other SNAP- blend makes up to 5%
approved foam blowing by weight of the total
agents for this end foam formulation.
use as substitutes for
CFCs and HCFCs.
Polyurethane: extruded sheet......... Transcend\TM\ Acceptable............. Decision only applies
Technologies as an where the foam blowing
additive to other SNAP- blend makes up to 5%
approved foam blowing by weight of the total
agents for this end foam formulation.
use as substitutes for
CFCs and HCFCs.
----------------------------------------------------------------------------------------------------------------
Fire Suppression and Explosion Protection
----------------------------------------------------------------------------------------------------------------
Total flooding....................... Uni-light AFFF 1% as a Acceptable............. This agent is intended
substitute for Halon for use onboard ships
1301. and in off-shore
installations.
Appropriate personal
protective equipment
should be worn during
manufacture or in the
event of a release.
Personal protective
equipment should
include safety
goggles, protective
gloves, and a self-
contained breathing
apparatus.
Supply bottles for the
foam should be clearly
labeled with the
potential hazards
associated with the
use of the chemicals
in the foam, as well
as handling procedures
to reduce risk
resulting from these
hazards.
Use should conform with
relevant OSHA
requirements,
including 29 CFR part
1910, subpart L, Sec.
Sec. 1910.160 and
1910.163.
EPA has no intention of
duplicating or
displacing OSHA
coverage related to
the use of personal
protection equipment
(e.g., respiratory
protection), fire
protection, hazard
communication, worker
training or any other
occupational safety
and health standard
with respect to halon
substitutes.
----------------------------------------------------------------------------------------------------------------

[FR Doc. 06-3030 Filed 3-28-06; 8:45 am]
BILLING CODE 6560-50-P

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