Cleared utility sink/washing machine/kitchen drain line with k50 sewer machine, all three fixtures are draining as they should at this time with no issues. The blockage showed itself at the utility sink first because the obstruction in the 2” waste line was located 10’ underneath the slab. Ended up retrieving tons of grease from the 2” waste line, highly recommend we return to clear the line with box jetting machine. Also noticed that the waste line for the washer and utility sink are both back grading towards the fixtures. Highly recommend we return to re-pipe the waste lines for both of these fixtures. Emailed copy of invoice and estimates to homeowners email.