We had a concrete company come in and dig a 2′ deep hole, 6.5′ long and 10′ wide. They cut away part of the foundation so that the new slab could extend farther toward the wall to give us extra edge distance on those critical lift anchors.
Finally, they poured a new 12″ thick, steel reinforced slab recessed 5″ below the garage floor. There is 14,000lbs (3.5 cubic yards) of concrete in this hole, so the lift isn’t going anywhere. They also faced the rough exposed surface of the foundation. I have to let this cure at least 28 days before I can drill into it.