Stewart Davies has more than 20 years’ experience in atmospheric sciences as an academic, consultant and environmental manager in operational waste management. He is the Past Chair of the Source Testing Association and has been intimately involved in the development of the monitoring, reporting and verification processes for the extension of Emissions Trading Scheme to the Energy from Waste sector. Stewart has wide-ranging experience in the measurement of stationary source emissions monitoring, flue gas biogenic carbon determination and waste composition studies. He is currently supporting the Environmental Services Association with the creation of a national waste biogenic carbon content database.