Four Leaf has followed the Global Reporting Initiative in extending the analysis of environmental impacts beyond greenhouse gases. Whilst greenhouse gases have a major impact and do account for a large percentage of this leaf’s rating, we believe that how organisations discharge water and process waste should also be included. Whether operations are being undertaken close to a protected conservation area, fines received for non-compliance with environmental laws and on the positive side, carbon offsets or sequestrations undertaken are also included in the Impact Leaf.

Chemicals used in food processing are not included in the analysis. Such chemicals often help preserve food life and are therefore excluded so as not to impact on quality or safety.

The historical footprint of greenhouse gases and biodiversity through upstream behaviour is also incorporated into the Impact Leaf.