WELCOME TO GEORGIA'S CLEAN AIR FORCE This site will provide you with information on the vehicle emission testing program in the metropolitan Atlanta area which includes the following counties: Cherokee, Clayton, Cobb, Coweta, DeKalb, Douglas, Fayette, Forsyth, Fulton, Gwinnett, Henry, Paulding and Rockdale. Vehicle emission inspections are required EVERY YEAR. All covered vehicles will require ...