{"data":{"id":"us/40-cfr-appendix-i-to-part-1045","jurisdiction":"us","citation":"40 CFR Appendix I to Part 1045","heading":"Appendix I to Part 1045—Summary of Previous Emission Standards","body":"(a) The following standards, which EPA originally adopted under 40 CFR part 91, apply to outboard and personal watercraft engines produced from model year 2006 through 2009:\n(1) For engines at or below 4.3 kW, the HC+NOX standard is 81.00 g/kW-hr.\n(2) For engines above 4.3 kW, the following HC+NOX standard applies:\nHC+NOX standard = (151 + 557/P0.9) ⋅ 0.250 + 6.00\nWhere:\nSTD = The HC+NOX emission standard, in g/kW-hr.\nP = The average power of an engine family, in kW.\n(b) Table 1 of this appendix describes the phase-in standards for outboard and personal watercraft engines for model years 1998 through 2005. For engines with maximum engine power above 4.3 kW, the standard is expressed by the following formula, in g/kW-hr, with constants for each year identified in Table 1 of this appendix:\nTable 1 of Appendix I—HC+NOX Phase-In Standards for Outboard and Personal Watercraft Engines\nModel year Maximum engine power \u003c4.3 kW Maximum engine power \u003e4.3 kW\nA B\n1998 278.00 0.917 2.44\n1999 253.00 0.833 2.89\n2000 228.00 0.750 3.33\n2001 204.00 0.667 3.78\n2002 179.00 0.583 4.22\n2003 155.00 0.500 4.67\n2004 130.00 0.417 5.11\n2005 105.00 0.333 5.56","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER U—AIR POLLUTION CONTROLS","PART 1045—CONTROL OF EMISSIONS FROM SPARK-IGNITION PROPULSION MARINE ENGINES AND VESSELS"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"a616fcb422e0f6e7dfc44f1227ef139275b819e9e1d0ef2ccc78213f625adfad","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-1045.825","next":"us/40-cfr-appendix-ii-to-part-1045"},"notice":"GroundRules: Original legal text. Not legal advice."}