Regulations last checked for updates: May 14, 2024

Title 40 - Protection of Environment last revised: May 10, 2024
§ 1031.200 - Abbreviations.

This part uses the following abbreviations:

Table 1 to § 1031.200—Abbreviations

°degree
%percent
COcarbon monoxide
CO2carbon dioxide
EIemission index
ggram
HChydrocarbon(s)
kgkilogram
kNkilonewton
kWkilowatt
LTOlanding and takeoff
mmeter
mgmilligram
µgMicrogram
NOXoxides of nitrogen
Numnumber
nvPMnon-volatile particulate matter
nvPMmassnon-volatile particulate matter mass
nvPMnumnon-volatile particulate matter number
nvPMMCnon-volatile particulate matter mass concentration
rOrated output
rPRrated pressure ratio
SNsmoke number
source: 87 FR 72351, Nov. 23, 2022, unless otherwise noted.
cite as: 40 CFR 1031.200