THIS IS AN 8-HOUR REFRESHER COURSE. IN ORDER TO KEEP YOUR CARD CURRENT, YOU MUST TAKE A REFRESHER EVERY YEAR. YOU WILL HAVE A ONE WEEK GRACE PERIOD AFTER YOUR CARD EXPIRES TO STILL REFRESH YOUR CARD. IF YOU DO NOT REFRESH YOUR CARD BY THAT DATE YOUR CARD IS NO LONGER GOOD AND YOU WILL NEED TO TAKE THE 40-HOUR COURSE OVER IN ORDER TO OBTAIN A CARD. PREREQUISITE: YOU MUST HAVE A CURRENT HAZARDOUS WASTE WORKER CARD OBTAINED BY THE WI. LABORERS' APPRENTICESHIP & TRAINING FUND.