Water damage on 3rd floor of the library

Water is dripping from the ceiling in an area on the third floor of the library. Facilities Management has been notified and plastic sheeting has been placed over the affected book stacks to protect the books beneath from the water. The carpeting in the area is thoroughly soaked. This area of the library has suffered such water damage before; however, the situation causing the problem was believed to have been resolved some time ago with the latest HVAC modifications.