Environmental reporting and, in particular, the quantitative measurement of environmental performance, is of increasing interest to external and internal tobacco industry stakeholders as the principal quantitative component of Corporate Responsibility (CR). Several international standards, intended to encourage standardisation of environmental performance indicator quantification, have emerged in recent years. Prime examples comprise the Greenhouse Gas Protocol, published by the World Business Council for Sustainable Development and the World Resources Institute (latest version March 2004) and the 2002 Sustainability Reporting Guidelines published by the Global Reporting Initiative (GRI). The Greenhouse Gas Protocol organisation has issued and revised a number of cross-sector tools of which those relating to stationary combustion and mobile combustion are of particular interest. GRI has developed additional protocols within the GRI framework. Examples include the GRI Energy Protocol, published in 2002, and the GRI Water Protocol, published in 2003. The question arises as to how these emerging standards and protocols, intended to be applied to generic organisations, can be applied meaningfully to tobacco processing facilities. This means in a manner which both facilitates internal benchmarking of manufacturing facility performance - and thereby encourage improved commercial and environmental performance - and communication with interested external stakeholders such as the investment community. Principal areas of interest include definitions and boundaries, especially in the context of energy consumption, water withdrawal, greenhouse gas emissions and waste generation. This question has been addressed by the CORESTA Environmental Protection in Production (EPiP) Sub-group and a paper was presented at the New Orleans Congress in September 2002. This focused primarily on management performance indicators (MPI's) and summarised initial work on the development of the methodology for operational performance indicators (OPI's). Since then, substantial progress has been made by the Sub-group in the development and refinement of a methodology for the calculation of OPI’s capable of being used by tobacco processing facilities worldwide. The paper will include examples of 2003 performance indicators calculated in accordance with the EPiP methodology.