Reporting principles

The following reporting principles are used to facilitate interpretation of our performance data:

• Absolute annual data is presented for all parameters. For selected parameters an eco-efficiency indicator is also presented. Eco-efficiency indicators reflect environmental impact in relation to, for example, production volume.
• Previous year’s data have been corrected where sites report corrections to historic data. This improves data quality and provides more meaningful comparisons between years. Consequently, data presented in previous reports may differ from data in subsequent reports.

Tetra Pak's greenhouse gas emissions data and reporting procedures are audited and verified by a third party every year, following a requirement of the WWF Climate Savers Programme.

As part of our forestry programme an independent organisation, ProForest, audits those of our paperboard suppliers who do not have an independently verified traceability system every two or three years. ProForest identifies areas for improvement, risks and any non-compliance.