[Correction: The leak occurring at Simplot was a sulfur dioxide leak according to reports submitted to the Wyoming Department of Environmental Quality by Simplot and the Environmental Protection Agency’s National Response Center. This article was corrected to reflect that. SweetwaterNOW apologizes for the error.]
ROCK SPRINGS — A small sulfur dioxide leak was discovered at Simplot’s Rock Springs facility late Tuesday morning.
Between 10-11 a.m. May 13, a small sulfur dioxide leak was discovered during routine maintenance. The facility undertook its standard procedures and evacuated the facility as a response. Two workers experienced minor exposure and were treated with first aid.
The leak was blocked off and repaired before Simplot employees investigated the facility for any more leaks or damages. Workers returned to their stations early this afternoon and operations are back to normal.
Simplot produces sulfuric acid using elemental sulfur and phosphoric acid that is utilized in fertilizer products. Sulfur trioxide is used in the production of sulfuric acid and is generally a colorless liquid that, when exposed to air, rapidly absorbs water and gives off white fumes.
