72. Appendix 3: Reporting process (continued) Qualified reliability of safety and environmental data The reliability of the data is subject to certain qualifications, despite the fact that the safety and environmental experts at our production units have reported to the best of their knowledge, in good faith and in accordance with agreed procedures and their figures have been validated by Group Supply Chain. Heineken is continuing to work on formulating and applying uniform definitions and instructions for reporting purposes, in order to improve the accuracy and comparability of the data. Standard calculation protocols for atmospheric emissions have been developed, for example, to minimise the error in these figures. Standard calculation tools are also present for refrigerant losses and waste discharge. Definitions Differences in the interpretation of definitions have occurred in some cases. On the basis of our internal validation findings, we do not expect these differences at the aggregated level to be material (i.e. a range from 5.5 per cent for water consumption to 12 per cent for C02 emissions. Completeness Reporting was not forthcoming or incomplete in some cases. Often newly acquired production units need to improve their reporting system, especially on waste and accident frequency. In order to provide a realistic representation of Heineken's total environmental impact, the missing data have been estimated in accordance with our internal procedures for incomplete reports. Some data has been estimated by our operating companies. Production units that did not report have been listed in a footnote and estimates were not included. At a number of production units, waste is removed from the site in containers of a given volume, and inaccuracies can arise in translating volume to weight. In the absence of local legislation in some countries outside Europe, the definition of hazardous waste is not always clear. In some cases, hazardous waste is safely recycled and is no longer designated as hazardous. The scope and workforce size related to the accident frequency can give rise to inaccuracies in some locations due to the misinterpretation of overtime and number of temporary personnel. Comparability Each parameter to be reported has accurately been defined in 'Instruction Manual for Environmental Reporting' and 'Instruction Manual for Accident Reporting'. The comparability of the data depends on the extent to which estimates have been used in determining the performance indicators. Where estimates have been used in interpreting trends, it is stated in the text of this report. Since no material changes have been made to definitions, calculations or estimating procedures, there is comparability from year to year, except when indicated in the text of this report. Change of definitions We have improved the reporting of indirect C02 emissions. Since 2005 we add the C02 emission due to the production of thermal energy by third parties such as steam. Also in 2005, we have taken the brewery KPIs and soft-drink plants' KPIs together in order to simplify and reduce the number of data entries. Accuracy The accuracy of the data depends on the method of measurement, the calculation procedure and whether estimates have been used. For some parameters, the sampling method and frequency can also affect accuracy. The quantity of refrigerant is difficult to establish because it is used in dynamic systems in which it can occur in both the liquid and gaseous phases. Refrigerant losses are determined on the basis of the quantities added to replenish systems. Heineken N.V. - 2004/2005 Sustainability Report

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Heineken - Milieuverslag | 2004 | | pagina 74