Diesel fuel
Diesel fuel has the meaning given in 40 CFR 1090.80. This generally includes No. 1 and No. 2 petroleum diesel fuels and biodiesel fuels.
Source
40 CFR § 1042.901
Scoping language
The following definitions apply to this part. The definitions apply to all subparts unless we note otherwise. All undefined terms have the meaning the Clean Air Act gives to them. The definitions follow: