City : EPA tests have not found significant levels of chemicals in the air . The plant 's owner says an electrical fault may have caused the blaze . There are concerns that the chemicals used in fracking have caused illnesses , gas leaks , even tap water catching fire -- something covered extensively in media reports and in the Emmy-winning natural gas documentary `` Gasland . '' The plant produced chemicals used in explosives , its owner tells ABC affiliate reporters . A main chemical produced at the plant was anhydrous ammonia , an EPA official says .
City : EPA tests have not found significant levels of chemicals in the air . The plant 's owner says an electrical fault may have caused the blaze . The plant produced chemicals used in explosives , its owner tells ABC affiliate reporters . A main chemical produced at the plant was anhydrous ammonia , an EPA official says .