The Refresher Asbestos Air Clearance Monitor Course is for those individuals that will be collecting final air clearance samples following an abatement project that takes place in West Virginia. 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.