Floating drift clogs the Battery Park Underpass after Hurricane Sandy inundated lower Manhattan with a record level storm surge. As part of the national response framework for Hurricane Sandy, the U.S. Army Corps of Engineers in support of FEMA is making steady progress to assist local, city, and state officials in the aftermath of Hurricane Sandy. The Corps will be overseeing pump operations to get an estimated 10 million gallons of water out of the Battery Park Underpass, which is estimated to take 24 hours to complete.