Scope 3 carbon footprint: How Auchan is moving toward eco-selection of suppliers Europe Auchan Retail is taking another step forward in the decarbonisation of Scope 3 emissions. Since August, the retailer has begun including smaller suppliers in the measurement of CO2 emissions. Majid Daki, Climate Project Manager at Auchan Retail, presented the group’s new initiative during the Produrable trade show.