The major dioxin contaminated areas at the airbase include the Z1 area located in the southern area of the airbase, the southwest area and the Pacer Ivy area at the western end of the airbase. Elevated dioxin concentrations have also been found in lake sediments in the northwest and northeast areas, the Gate 2 Lake, the Bien Hung Lake and in the drainage canal west of the Pacer Ivy area. … [Read more...] about Vietnam, U.S. eliminate dioxin contamination from part of Bien Hoa Airbase