Sep 27, 2013 - The Associated PressCASPER -- State environmental regulators are investigating a discharge of smoke from the Wyoming Refining Co. refinery in Newcastle.
Wyoming Refining President James Runyan says the discharge occurred Sunday afternoon when a thunderstorm knocked out power to the refinery, activating an emergency flare system.
The Wyoming Department of Environmental Quality is looking into whether sulfur dioxide was released by the plant.
DEQ district engineer Tanner Shatto said high levels of sulfur dioxide can be dangerous.
The agency issued a notice of violation to the same refinery for emissions that occurred one day in 2012.
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