Title 40
SECTION 97.203
97.203 Measurements, abbreviations, and acronyms.
§ 97.203 Measurements, abbreviations, and acronyms.Measurements, abbreviations, and acronyms used in this subpart and subparts BBB through III 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.