VIDEO: That stubborn landfill fire on Tucson's southeast side has been a headache for Tucson Firefighters---and more than a headache for people with lung problems. The fire’s been burning since at least 3AM Sunday. It's not burning garbage. The landfill takes in wood and landscaping waste. It's been a tough fire to fight, that's been tough on anyone with breathing problems. Tucson Fire says the landfill owner is covering the cost of heavy equipment to dig into the layers of burning wood and brush. That should help water reach the fire.