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97.303 Measurements, abbreviations, and acronyms. RegSenseAir QualityCFR RegulationsEnvironmental Protection Agency (EPA)EnvironmentalAir QualityCFR SectionFocus AreaEnglishAir ProgramsUSA
Measurements, abbreviations, and acronyms used in this subpart and subparts BBBB through IIII are defined as follows:Btu - British thermal unit.CO2 - carbon dioxide.H2O - water.Hg - mercury.hr - hour.kW - kilowatt electrical.kWh - kilowatt hour.lb - pound.mmBtu - million Btu.MWe - megawatt electrical.MWh - megawatt hour.NOX - nitrogen oxides.O2 - oxygen.ppm - parts per million.scfh - standard cubic feet per hour.SO2 - sulfur dioxide.yr - year.READ MORESHOW LESS['Air Programs']['Air Quality']