"As of January 1, 2011, the oldest, most polluting trucks servicing the New York and New Jersey ports will finally be laid to rest, thanks to the Clean Trucks Program, a collaboration of the Port Authority, the Environmental Protection Agency (EPA), NRDC, and industry and labor groups. (A similar program was recently implemented successfully at the ports of Los Angeles and Long Beach, California.) Under the terms of the plan for the Port of New York and New Jersey, all pre-1994 trucks servicing the port -- about 636 vehicles -- will be replaced by newer, cleaner models. This step alone will reduce soot pollution from trucks by two-thirds and smog-forming nitrogen oxides by half. To facilitate the transition, the Port Authority and the EPA will provide truck drivers with $28 million in direct grants for up to 25 percent of the purchase price of new vehicles, as well as low-interest loans to cover the remaining costs."

http://www.onearth.org/article/in-major-us-ports-the-cleanup-begins