think we found the source ...had nothing to do with the original dry down .
it's bong water .....
well not really
this is their pool room that rarely gets used or even entered all that often .
in that room in a closet is the water softener ...when regenerating it drains into the connecting crawl space where there's a drain.
That crawl space is also where the well tank is (the source of the original flood when it failed)
Long story a little less long, that drain must be clogged enough that it can't handle all the flow from regenerating softener .
he discovered puddles in the crawl space this morning.....it was dry when we looked at it a few days ago trying to determine where the moisture to cause effervescence was coming from
Mystery solved ...gotta be the softener and slow/no drain.
..L.T.A.