40 CFR § 86.094-3 - Abbreviations.
§ 86.094-3 Abbreviations.
(b) The abbreviations in this section apply to this subpart, and also to subparts B, E, F, H, M, N and P of this part, and have the following meanings:
ALVW - Adjusted Loaded Vehicle Weight
LPG - Liquefied Petroleum Gas
NMHC - Nonmethane Hydrocarbons
NMHCE - Non-Methane Hydrocarbon Equivalent
PM - Particulate Matter
THC - Total Hydrocarbons