40 CFR 97.503 - Measurements, abbreviations, and acronyms.

Regulations last checked for updates: Nov 25, 2024

Title 40 - Protection of Environment last revised: Nov 21, 2024

§ 97.503 - Measurements, abbreviations, and acronyms.

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]

authority: 42 U.S.C. 7401,7403,7410,7426,7491,7601,and,

source: 65 FR 2727, Jan. 18, 2000, unless otherwise noted. 71 FR 25396, 25422, and 25443, Apr. 28, 2006

cite as: 40 CFR 97.503