Respondent owned and operated the natural gas production site which stored produced water including residual hydrocarbons in a 400-barrel fiberglass tank, and natural gas condensate in a 21O-barrel steel tank (tank battery), from natural gas production wells located at the site. A second 210-barrel steel tank was also present in the tank battery. On July 6, 2012 at around 9:45pm, lightning struck the tank battery. The lightning strike compromised one or more of the tanks, causing flammable hydrocarbon vapors in one or more of the tanks to ignite causing a fire and explosion.