Oh dear god. So at about 9:30 pm last night, Mr. Numbers and I could smell gas. At about 11:00, they come out and check out basement, which is fine, and leave. Then, and 12:45 am, they call DH's cell asking us to move our cars from in front of out house (um, they weren't our cars).
1:00 am on the dot, jack hammers. Until about 4:00 am. Apparently, thye didn't "cap" something, but had already paved over it. Good times. You are lucky you moved.