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
40 C.F.R. §97.503