Chemung County’s Spring Hazardous Waste Free Drop Off Event. Saturday May 16, 2026. Pre-registration required by calling Cornell Cooperative Extension at 607-734-4453 Wednesday, April 22-Wednesday, May 13, weekdays from 9a-12p & 1p-4p. Chemung County residents only. When registering, please have a list of items you intend to bring. Electronics are not accepted. For more information, please visit chemung.cce.cornell.edu or call 607-734-4453.