Whirlpool submitted a proposed supplement to its Final Remedy Work Plan on Monday to the Arkansas Department of Environmental Quality that would add additional injections of chemical oxidant combined with soil removal to remedy an area near the northwest corner of the Whirlpool site where additional trichloroethylene has been found. The potentially cancer-causing TCE was used as part of a degreasing agent by Whirlpool until the 1980s at its now-closed Fort Smith plant.