STERLING, Va.—An ammonia leak at a commercial food preparation facility in Virginia sent 33 people to the hospital, authorities said Thursday.
The leak at the Cuisine Solutions plant in Sterling on Wednesday evening was caused by a failed valve, the Loudoun County Combined Fire and Rescue System said in a written statement. A hazardous response team donned protective gear and shut off the valve, authorities said. The company said in a written statement Thursday that the leak happened outside the building and was contained within an hour.