 on-site verification of the cement plant in Lengerich (Germany);  on-site verification of the cement plant in Esch-sur-Alzette /Rumelange (Luxembourg); c) analysis, on a sample basis, of the documentation supporting the Report, in order to confirm the reliability of data and information collected through meetings, interviews and on-site verifications and to confirm they were properly managed; d) verification of how data and information are managed in the selected sites and how they are subsequently aggregated and consolidated at Group level; e) analysis of the completeness and internal consistency of qualitative information included in the Report compared with the guidelines identified in paragraph 1 of the present document; f) obtaining a representation letter, signed by the legal representative of Buzzi Unicem SpA, relating to the completeness and reliability of the Report and of the information and data included in it, as well as to the compliance with the guidelines identified in paragraph 1 of the present document.