The main goal of the project was to develop better definitions and procedures for assessment of the costs for environmental protection (mostly end-of- pipe technologies) and costs for integrated prevention. that are specifically adopted to the situation and requirements within OMV and Petrom. The focus of the project was not so much on assessment of detailed data for past years, but on developing in the course of a pilot assessment definitions and procedures for the future based on the experiences from data shortcomings However, re assessment of the cost for the year 2005 was taken as a starting point for this exercise