Dig from cement pad located at back of home to cement pad located just before alley per homeowners request. We are at 18 inches deep at home and 34 inches deep just in front of cement pad at alley. We found that someone had gig up the sewer by the home and punched a hole in the old sewer line and placed some plastic over the hole and this was the first set of root intrusions. The second set of root intrusions was just in front of the cement pad by alley were a section of cast iron pipe was attached to the clay sewer line. We did run the camera down the line out to city sewer and it did not look bad. We had the renters in the front unit flush toilets and run the sinks and everything is working fine. Unit 4 nobody answered the door.