our testing on site indicated we had ammonium products, we had ketones, aldehydes. typically see in any large industrial batching plant. while padgett's team checks for toxins, local officials decide they can't afford to take any chances. hundreds of students from a school only a quarter mile away are taken by bus to safe locations. some residents are also ordered to leave, but chris dillinger must make the decision on his own. >> i didn't think about, you know, poisonous gases or anything until we came back and then turned on the tv because, you know, we didn't know it was an industrial fire. once we knew what it was, we started thinking maybe we should leave. eventually we didn't leave because we knew the smoke was blowing away from us. it did make me a little bit nervous. >> after enduring six hours of punishing heat and flames, firefighters almost completely contain the blaze. and the hazmat team reeses its results. the air quality is not a threat to the community. >> our personnel were there for approximately five, almost six hours before we cleared it. we dete