From 2007.igem.org

Waste should be double bagged in white biohazard bags. Close the bags using a bit of autoclave tape, making sure that there is still a sufficient opening for air to escape. There are two autoclaves for waste. One is on the second floor. MAKE SURE YOU DON'T PUT THE WASTE BAG IN THE NORMAL AUTOCLAVE. The other is past the seminar room on the ground floor. Choose the 'waste' program on the autoclave. Once the program has finished, take the now sterile waste to the waste diposal area on the ground floor.