In this paper we present our work on the engine for integration of environmental data. We present a suite of selected environmental scenarios, which are integrated into a novel data mining and integration environment, being developed in the project ADMIRE . The scenarios have been chosen for their suitability for data mining by environmental experts. They deal with meteorological and hydrological problems, and apply the chosen solutions to pilot areas within Slovakia. The main challenge is that the environmental data required by scenarios are maintained and provided by different organizations and are often in different formats. We present our approach to the specification and execution of data integration tasks, which deals with the distributed nature and heterogeneity of required data resources.