A Target store in Lehigh County had to be evacuated Wednesday afternoon because of a gas leak. Crews were called shortly after 4:30 p.m. to the Target off of Airport Road in Hanover Township. Chief Nick Marlowe, Han-Le-Co Fire Co. says the carbon dioxide line for a soda machine blew off and blew carbon dioxide around in a small room. The store was evacuated while crews investigated. The store reopened at 5:45 p.m., Marlowe said. Four workers were taken to a local hospital for evaluation. No firefighters were injured or taken to the hospital.