Dispose of hazardous household chemicals AT NO CHARGE. Event held from 9 am – 1 pm at the Waste Services Center, 110 South Martin Street. Please be sure to bring a current City of Longmont utility bill and identification to show that you are a City resident. This event is for Longmont residents only; sorry, no commercial or business waste accepted. For more information, ask the Waste Wizard app about specific items or contact Waste Services.