New problem at newer high school turned up this week. Main line leak under concrete and no way to isolate it because isolation valves were left out of looped system. Backflow had to be shut down which kills all irrigation to entire site. Picture #1: This is where water came gushing out but the leak is up under the concrete. But how far? Picture #2: Demolition starts. Leo and Hogie checking out the rebar in the concrete. Picture #3: Leo guiding Hogie into place. Picture #4: Different angle of Leo guiding Hogie into place. Picture #5: Danny cutting out rebar so I can dig a pot hole and see what the problem is.