Return to install gas water heater and to hydrojet sewer main lines. Removed water heater, and installed new gas unit. New insulation. Reworked gas line to accommodate correct sediment trap and remove sediment trap with incorrect tee configuration. Removed tension off copper waterlines. Lit unit and cleaned work space. When camera and jet were used on main line I found that there appears to be. Buried sewer manhole or access. It is deeper than I was able to probe, and will likely require excavation before we are able to assess the viability of adding a riser or isolation box. However, the clean out inspection revealed a slight sewage slow down right before the suspected manhole chamber. Other than the slight belly, I do not see any indication of chronic backups or sewer issues. Pipe walls appear unblemished for as far as we are able to inspect. I believe it would be prudent to pursue excavating the manhole or identifying the section of pipe seen in the video. If it is a manhole, it