The company provided an estimate to dig using a "vaccon truck". Did a search and cannot figure out what this is, is this a mini-horizontal driller?
After the line is repaired, they said they will back fill with a "non-exacavatable flowable fill". What type of material is this? Is it plastic? If they run into a footing, do you know what is a standard procedure? Break the footing there to get through, or go under the footing? Will the back fill material be able to fill the void ABOVE the footing line?