Intermediate speed
Intermediate speed means peak torque speed if peak torque speed occurs between 60 and 75 percent of rated speed. If the peak torque speed is less than 60 percent of rated speed, intermediate speed means 60 percent of rated speed. If the peak torque speed is greater than 75 percent of rated speed, intermediate speed means 75 percent of rated speed.
Source
40 CFR § 86.082-2
Scoping language
The definitions of this section apply to this subpart and also to subparts B, D, I, and R of this part.