40 CFR § 97.503
Measurements, abbreviations, and acronyms
June 9, 2020
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]
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