ALBANY - Conservation officials have banned hauling, importing or selling untreated firewood in New York in an effort to stop the spread of tree-killing insects. The Department of Environmental Conservation said Wednesday the emergency regulations are effective immediately for 90 days. They prohibit importing out-of-state firewood unless treated to eliminate invasive insect species., fungi and pathogens. Transporting any untreated firewood within the state is limited to less than 50 miles. The DEC plans to develop permanent regulations after public comment.