The diesel emissions inspection is made at the annual safety inspection and it's done at a diesel emissions inspection station.
I have another question for about Investigation process. What happens after the investigation is completed?
This will depend on what is found in the investigation. The result could be no action at all, a warning letter Notice of Investigation put in your file, or a formal administrative hearing before an Administrative Law Judge.
They said something about a hearing waiver where I would just pay a monetary penalty. What if I don't accept the waiver?