p.135; The methodology used is that of the GHG Protocol. The complementary guidelines and conversion factor sources include: National Energy Balance (BEN, Brazil); 2006 IPCC Guidelines for National Greenhouse Gas Inventories; Hot Climate, Cool Commerce Report: A Service Sector Guide to Greenhouse Gas Management (WRI, 2006); AP-42 (Compilation of Air Pollutant Emission Factors – Volume I, Fifth Edition, January, 2005 revised edition); Petroleum Industry Guidelines for reporting Greenhouse Gas Emissions (IPIECA, OGP and API). Specific conversion factors for the fuels of a specific site are used when available and can be consulted with the Environment area through the Company website contact channel.