Yes, but people with misdemeanor offences aren't a threat to the handling of aircraft. But the fact that it was drunk driving should at the very least prohibit him from driving airside, let alone getting a job sucking up used glycol.
And all he did was a runway incursion. Serious, but not news-worthy. And furthermore, I'm really suprised by the amount of personal vehicles I see on the ramp. I see coke delivery trucks, FedEx, USPS, and Mcdonalds company cars. Up north, only airside vehicles are permitted.