WHITING, Ind. (AP) _ BP officials have notified the state of Indiana that more than 500 pounds of sulfur dioxide were released into the air following an explosion at refinery in northwestern Indiana.
Indiana Department of Environmental Management spokesman Dan Goldblatt says the agency is still preparing a report but the initial indication is that the release didn't cause any air quality problems.
BP spokesman Scott Dean says there's no indication the explosion had any environmental impact.
Dean says the explosion Wednesday night was caused by a compressor in one of the units of the refinery. He says the plant was continuing to operate Thursday. He wouldn't comment on whether it affected the production at the plant.
The plant is in Whiting, just east of Chicago, along Lake Michigan.
