ARKEMA UNDER INVESTIGATION: The Harris County District Attorney's Office announced Friday it was investigating the Houston-area Arkema plant whose volatile chemicals exploded in the aftermath of Hurricane Harvey, The Houston Chronicle reports . “Companies should be on notice that we care when they pollute our air, our water, our environment," District Attorney Kim Ogg said. "We are looking into exactly what happened at the plant. We are gathering facts and we will apply the law. Arkema is under criminal investigation."