CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER C—AIR PROGRAMS (Parts 50–99) > PART 97—FEDERAL NO X BUDGET TRADING PROGRAM AND CAIR NO X AND SO 2 TRADING PROGRAMS > SUBPART AA—CAIR NO X Annual Trading Program General Provisions (§97.101 to §97.108) > 97.103—Measurements, abbreviations, and acronyms.

97.103—Measurements, abbreviations, and acronyms.

Measurements, abbreviations, and acronyms used in this subpart and subparts BB through II are defined as follows:

Btu—British thermal unit

Code of Federal Regulations

CO2—carbon dioxide

Code of Federal Regulations

H2O—water

Hg—mercury

hr—hour

kW—kilowatt electrical

kWh—kilowatt hour

lb—pound

mmBtu—million Btu

MWe—megawatt electrical

MWh—megawatt hour

Code of Federal Regulations

NOX—nitrogen oxides

Code of Federal Regulations

O2—oxygen

ppm—parts per million

scfh—standard cubic feet per hour

Code of Federal Regulations

SO2—sulfur dioxide

yr—year