At 9:00 AM, on 5/10/16, an employee and a coworker were preparing to replace a malfunctioning gauge board on an asphalt tank. They transferred contents from the malfunctioning tank to another tank and shut down the malfunctioning tank. Every energy source was off/locked out. Using an impact wrench, the employee began loosening/removing the bolts holding the manway cover on the tank. After he loosened several bolts, some hot liquid asphalt splashed out from behind the cover onto the concrete pad and onto his hands, arms, and legs. He suffered second and third degree burns to both arms, hands, and legs, requiring hospitalization and surgery.