Minneapolis MN commercial manhole sewage system

Below is a video of a manhole sewer line that our company cleaned out. As you can see in the trench at the bottom of the video the flow is fast. This is how it should look after cleaning a sewer line depending on the condition of the sewer line.Watch this![youtube http://www.youtube.com/watch?v=9n1lDe4xSaU&w=560&h=315]