Crude oil processing associated with the impact on the environment. Refinery production processes are a source of emissions in virtually all environmental components. The article characterizes the sources of emissions by dividing them taking into account various criteria and escribes the regulatory and legal environment, addressing the problems of industrial emissions, taking into account current and forecast guidance at European and national level. Highlighted the various aspects related to the effects of legislation and its implementation, among which, indicated as the most important implementation costs in relation to the underlying operating costs.