these procedures included: - Inquiries of management to gain an understanding of uc rusal’s processes for determining the material issues for uc rusal’s key stakeholder groups. - Interviews with management and relevant staff at corporate and selected operational site level concerning sustainability strategy and policies for material issues and the implementation of these across the business. - Interviews with management and relevant staff at corporate and selected operational site level about the design and implementation of the systems and methods used to collect and process the information reported, including the aggregation of data into information presented in the report. - Interviews with management and relevant staff at corporate and operational sites level responsible for providing the information in the report. - a media analysis and an internet search for references to uc rusal during the reporting period. - performing substantive analytical procedures consisting of the evaluation of sustainability data through a study of plausible relationships with financial data, other non-financial data and historical information. - visit to sites operating in volgograd, russian Federation (volgograd aluminium smelter) selected on the basis of a risk analysis including the consideration of both quantitative and qualitative criteria. - comparing the information presented in the report to corresponding internal and external information in the relevant underlying sources to determine whether all relevant information contained in such underlying sources has been included in the report. - checking the completeness of qualitative and quantitative information included in the report and its overall consistency with the grI application level requirements of c+. - With regard to the financial data included in the report that are marked with *, verifying that they were correctly derived from uc rusal’s audited consolidated IFrs financial statements for year ended - reading the information presented in the report to determine whether it is in line with our overall knowledge of, and experience with, the sustainability performance of uc rusal. - obtaining a representation letter signed by the legal representative of uc rusal as to the compliance of the report with the guidelines indicated in the “about this report” chapter and as to the reliability and completeness of the information and data contained therein.