A Main Line backup required camera inspection of the DWV system. Found root intrusion approx. 50ft into the line where an old tree had been removed. The 4" clay pipe had been completely separated, causing sewer backups and improper drainage, leaking into the front yard. Dug trench, replaced pipe and installed 2-way cleanout and tied back into the clay waste line, propping up the line to ensure no low points.