I've seen him fill in the light at the end of a tunnel in a federally owned and abandoned drain line. They solidly seal one end with concrete blocks. The one I saw was around 300 feet. They put in three 6 inch pipes. One 200 foot long, one 100 and the last 50. They pump in the concrete till the longest pipe is full.The proverbial light at the end of the tunnel.
What’s it gor?
For what?
These can be additional after thoughts to alleviate water drainage issues not caught by engineers originally.For what?