Cleaned the sewer line by jetting and descaling to remove blockages and buildup. Filled a void where the bottom of the pipe was missing to prepare for lining. Installed a patch liner, starting from the grease basin at the back of the building, and extended it from the inlet to the grease trap, finishing in a 4” PVC section near the outside cleanout. The liner was carefully positioned and secured to ensure a seamless repair and restore the integrity of the sewer line.