Turkish Petroleum Industry Association, PETDER, was established on September 1996 through a consortium of leading fuel distribution companies with the aim of forming a non-governmental organization supporting a spectrum of business activities in the downstream oil industry. Present PETDER members include Alpet, Aytemiz, Belgin, BP, Gulf, ExxonMobil, Opet, Petline, Petrol Ofisi, Shell, Shell & Turcas, Total and Turkuaz. PETDER, at the epicenter of the oil sector, commits itself to - representing the industry in every aspect possible, - mitigating solution scenarios to the sector’s problems, - forming a network between the private and public sector as well as the media, - enforcing highest HSE standards and nurturing a social responsibility conscience within the industry. PETDER’s main work areas involve - the provision of the sale and economic supply of gasoline, LPG and lubricants oils, - maintenance of transparent, fair and stable industrial environment, - prevention of unfair competition, - preservation of consumer and human rights, - amelioration of industrial standards within the sector, - publishing sector reports and monthly bulletins. Since 2004, PETDER stands as the only authorized body responsible for the collection of waste engine oils in Turkey and has introduced “One Barrel One Tree” campaign in 2010 by planting a tree for each collected barrel of waste engine oil.