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 48458, Aug. 8, 2011, as amended at 81 FR 74619, Oct. 26, 2016]