Measurements, abbreviations, and acronyms used in this subpart are defined as follows:
BART - best available retrofit technology
Btu - British thermal unit
CO2 - carbon dioxide
CSAPR - Cross-State Air Pollution Rule
H2O - water
hr - hour
lb - pound
mmBtu - million Btu
MWe - megawatt electrical
NOX - nitrogen oxides
O2 - oxygen
ppm - parts per million
scfh - standard cubic feet per hour
SIP - State implementation plan
SO2 - sulfur dioxide