Thumping noise and shaking house

After being rained out twice, the city crew is out front with a backhoe.

The sidewalk in front of our house had settled unevenly and is a nasty tripping hazard. The settling also affected one section of my driveway. The sidewalks here are the city's to maintain, the driveway was a judgment call by the crew boss. He decided the settling was caused by problems around the sewer that were their fault.

They are out there this morning, beginning at 7am, ripping out most of the sidewalk and the affected section of the driveway. It's partly manual labor but mostly a big ol' backhoe thumping away to break up the concrete. Some of it seems to be extra stubborn. When they thump down on those the whole house rattles.

Plan is to demolish it all today, lay sand, forms and rebar. Then pour and finish the replacement tomorrow.

The crew boss and backhoe operator is one of my neighbors from the old house. He's really precise with the demolition. We have a big circular flower bed around a tree in the front. The edge is defined by stacked stones. The driveway segment they're demolishing is less than a foot from one edge of that bed and he hasn't disturbed a single rock.

Update: Added picture. I didn't get a picture of the demolition in progress. This is how it looks this morning. Bottom leveled, forms and rebar all in place. As of now there's a crew standing about waiting for concrete to arrive.