Good news I found a 12 ft circular sewer line nearby. I read once I have to tie the proposed HGL to the existing HGL at point of connection. How would I achieve this. Maybe, by putting a camera inside to see the highest level water has reached inside the pipe in the past.
I have to discharge the surface run-off from a land into existing Storm line (12”) in New York City, but I can’t locate the outfall. A there a check list. Much appreciated. Bob