DDT

A plan to cap a vast, long-neglected deposit of the pesticide DDT on the ocean floor off Southern California got its first public airing Tuesday -- nearly four decades after the poison was banned from use. The estimated $36-million proposal by the U.S. Environmental Protection Agency calls for a cover of sand and silt to be placed over the most contaminated part of the estimated 17-square-mile area declared a Superfund site in 1996.