The values presented take into account emission factors defined by the IPCC for refrigeration gases and for enteric emissions from cattle, by the Direcção-Geral de Energia e Geologia em Portugal (Portuguese Directorate-General for Energy and Geology), by the Colombian Unidad de Planeación Minero Energética (Unit of Mining and Energy Planning), by the Krajowy Ośrodek Bilansowania i Zarządzania Emisjami (Polish Centre for Emission Balance and Management), for fuels and heating, by the International Energy Agency, suppliers (electricity) and by the Greenhouse Gas Protocol (fuels used in light vehicle fleet, transport of goods to stores and air travel) and by the UK GHG Conversion Factors for Company Reporting (waste).