A pool chemical leak forced an evacuation at a fitness center in Chattanooga early Friday morning. Chattanooga firefighters responded to a reported hazardous materials incident at the Sports Barn North on Hamill Road just after 6:30 Friday morning. Battalion Chief Carlos Hampton said an employee was working with some pool chemicals when some of the liquid leaked out of a container. The employee said he breathed in some of the vapors from the liquid and became ill. When the manager learned of the accident, she called 911. The fire department responded with several fire companies, including the haz-mat team, and the building was evacuated as a precaution.