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Federal regulations · Through 2026-08-25 · Newer source version available

40 CFR 97.903: Measurements, abbreviations, and acronyms.

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Where this section sits in the code
  1. Title 40—Protection of Environment
  2. CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
  3. SUBCHAPTER C—AIR PROGRAMS
  4. PART 97—FEDERAL NOX BUDGET TRADING PROGRAM, CAIR NOX AND SO2 TRADING PROGRAMS, CSAPR NOX AND SO2 TRADING PROGRAMS, AND TEXAS SO2 TRADING PROGRAM
  5. Subpart FFFFF—Texas SO2 Trading Program

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

Collected 2026-08-27T02:26:04Z. Source file · JSON

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