determining just how much of it is in the water. people throughout the area have complained of the powerful odor, saying it smells like licorice. the u.s. attorney in west virginia said the feds are investigating what caused this to happen. doug mckelway is in charleston. first impressions? >> first impressions, i'm trying to detect that odor you just mentioned, and maybe a faint hint of it but i don't notice it. the chemical is a foaming agent that is used in the processing of coal before the coal is shipped off for burping. -- for burning, it liked at a tank in freedom industries, coal processing plant. 5,000 gallons this best guesstimate we have heard leaking from the 40,000-gallon tank but the numbers will come in more precisely later on. we learned there are seven water