The EF-3 tornado that touched down in the St. Louis region last May left a 20-mile path of destruction. The project is working in cooperation with St. Louis community groups representing neighborhoods in the tornado’s path. “The ground was wet, so we didn’t need to worry about inhaling any dust that might contain lead,” Alhusayni said. It’s too early to know if the tornado had any real effect on lead levels in St. Louis soils. “We already know that lead levels are generally high throughout the city,” Catalano said.