The Asbestos Contractor Supervisor Refresher training re-certifies individuals to supervise and direct asbestos workers performing abatement activities. An Asbestos Supervisor must have completed this training and have a valid Supervisor certificate with them at all times while working on qualifying projects. EPA certified asbestos classes have a one-year certification with a one-year grace period. If you fail to take the refresher class by the expiration date you cannot perform the AHERA job duties until you take a refresher class. If you go longer than one year past your expiration date without taking a refresher class, you are required to retake the initial certification class. If you did not take your last course from Pinnacle, please provide in advance a copy.