Bulky Waste Disposal Weekend Dates The dates have been set for the annual bulky waste weekends. Folks are reminded this service is intended to be for the residents of Waltham, Osborn, Amherst, Great Pond and Aurora. The sites will be operated by Harris Downeast Disposal. Please be respectful of Mr. Harris and his crew. Aurora Location June 7th and 8th 8am - 3pm Route 9 at the Sand Building site. Just beyond the Richardson road on the right. Waltham Location June 21st and 22nd 8am - 3pm 42 Cave Hill Rd (the firehouse)