Televised ducts under slab floor. Ducts are galvanized metal ducts that are extremely rusted and deteriorated. There was no water at time of televisi g but it appears it is entering in the plenum area the traveling g through the system from there. Suggest installing a sump pump in the garage to control the water level. After that the du cts should be spin cast mortared and the spray lined with Duct Armor duct lining material.