Title 40
SECTION 97.503
97.503 Measurements, abbreviations, and acronyms.
§ 97.503 Measurements, abbreviations, and acronyms.Measurements, abbreviations, and acronyms used in this subpart are defined as follows:
Btu - British thermal unit CO2 - carbon dioxide CSAPR - Cross-State Air Pollution Rule H2O - water hr - hour 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 SIP - State implementation plan SO2 - sulfur dioxide TR - Transport Rule yr - year [76 FR 48406, Aug. 8, 2011, as amended at 81 FR 74609, Oct. 26, 2016]