Are you just making a shallow groove in the concrete deep enough for the raceway? If so you'll only need to be deep enough to conceal the raceway. Table 300.5 would not apply.
If Table 300.5 would not apply, what would? If I channel through the slab, I am out of the building, however if I channel deep enough to just cover the raceway I am in the building. Well, if I am in the building, what code allows me to do this?