Over the past years we have seen that organizations pay more and more attention to the business consequences of environmental aspects related to their activities, products and services. These business consequences may be related to costs incurred in eliminating or reducing sources of environmental pollution in order to comply with legal requirements, to maintain business relationships or to enhance the general corporate image. Systematic management of the environmental aspects becomes part of the normal conduct of business of an organization. The ISO 14000 series of standards has been developed to provide organizations all over the world with a toolbox to control and improve their environmental aspects in a systematic way. Recently a new draft standard in this series has been published, ISO/DIS 14015, that gives guidance on how to conduct environmental assessments of sites and organizations. This article provides information on the background and contents of ISO/DIS 14015.