{"data":{"id":"us/40-cfr-97.103","jurisdiction":"us","citation":"40 CFR 97.103","heading":"Measurements, abbreviations, and acronyms.","body":"Measurements, abbreviations, and acronyms used in this subpart and subparts BB through II are defined as follows:\nBtu—British thermal unit\nCO2—carbon dioxide\nH2O—water\nHg—mercury\nhr—hour\nkW—kilowatt electrical\nkWh—kilowatt hour\nlb—pound\nmmBtu—million Btu\nMWe—megawatt electrical\nMWh—megawatt hour\nNOX—nitrogen oxides\nO2—oxygen\nppm—parts per million\nscfh—standard cubic feet per hour\nSO2—sulfur dioxide\nyr—year","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 AA—CAIR NOX Annual Trading Program General Provisions"],"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":"d588cddee87ad7f6523ce1dae213a3beb542de16a0c5e9e44c4bbf44d12ca6c4","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-97.102","next":"us/40-cfr-97.104"},"notice":"GroundRules: Original legal text. Not legal advice."}