The reference architecture of [10] integrates environmental management information systems (EMIS) and enterprise resource planning (ERP) systems in a holistic and long-term oriented environmental manner. Building on this architecture, we developed an extended framework to operationally integrate EMIS and ERP systems. Our proposed framework goes beyond prior specifications as it offers a semi-automatic approach to model ERP information (such as production orders) as a material flow network in which each transition represents an operation of the production process.