Measurements, abbreviations, and acronyms used in this subpart and subparts BB through II 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
40 C.F.R. §97.103