Televised ducts under slab floor on lower level of house. Ducts are concrete ducts with metal fittings that are rusted and deteriorating. There was moisture and standing water in 3 of 4 lines. There is a sump pit and pump installed. There is no drain tile and holes were just recently drilled in sides of pit. Suggest spin cast mortaring ducts on metal fittings then spray lining with Duct Armor duct lining material.