New Jersey environmental officials said superstorm Sandy apparently did not cause pollution to seep from Superfund sites in Bergen and Passaic counties, although testing has taken place at only one of the 11 active sites. "The integrity of the sites doesn't seem to be compromised," said Larry Hajna of the state Department of Environmental Protection. Others express doubts that the storm's impact was so minimal for toxic sites. "What makes a storm like this all the more worse is all the pollution a tidal surge can move around in a place like the Passaic River. ... It has nowhere to go but up the river, and that is where the pollution is," said Alan Blumberg of Stevens Institute of Technology.