{"data":{"id":"us/40-cfr-97.380","jurisdiction":"us","citation":"40 CFR 97.380","heading":"Applicability.","body":"A CAIR NOX Ozone Season opt-in unit must be a unit that:\n(a) Is located in a State that submits, and for which the Administrator approves, a State implementation plan revision in accordance with § 51.123(ee)(3) (i), (ii), or (iii) of this chapter establishing procedures concerning CAIR Ozone Season opt-in units;\n(b) Is not a CAIR NOX Ozone Season unit under § 97.304 and is not covered by a retired unit exemption under § 97.305 that is in effect;\n(c) Is not covered by a retired unit exemption under § 72.8 of this chapter that is in effect;\n(d) Has or is required or qualified to have a title V operating permit or other federally enforceable permit; and\n(e) Vents all of its emissions to a stack and can meet the monitoring, recordkeeping, and reporting requirements of subpart HHHH of this part.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 97—FEDERAL NOX BUDGET TRADING PROGRAM, CAIR NOX AND SO2 TRADING PROGRAMS, CSAPR NOX AND SO2 TRADING PROGRAMS, AND TEXAS SO2 TRADING PROGRAM","Subpart IIII—CAIR NOX Ozone Season Opt-in Units"],"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":"8ebb7b5a00589508fb146dbd169038717b95c61775c48b21df51b87871b192a0","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-97.375","next":"us/40-cfr-97.381"},"notice":"GroundRules: Original legal text. Not legal advice."}