For residential property, the U.S. Department of Housing and Urban Development recommends inspection of paint every year for signs of deterioration such as flaking and peeling. HUD also suggests performing dust wipes after maintenance jobs that disturb old paint. Dust wipes, performed by trained or certified professionals, should be conducted every two years with results kept on file. Whenever renovation is done and paint is disturbed at one of Jefferson Parish's 83 schools, we have things tested and we address the renovation or whatever we're doing accordingly, David Taylor] said. Some tests on some exteriors have come back where there is lead paint but it has been encapsulated with other paint. We follow whatever guidelines need to be followed. In St. Charles Parish, about half of the parish's 19 public schools were built before lead-based paint was banned, said Larry Sesser, executive director of physical plant services. Carver Elementary School, built in the 1950s, sealed its lead paint in the 1990s, he said. Not all surfaces in all buildings have been tested, he said, but he is not aware of peeling or deteriorating paint.