The design of underground lines should address the technical and environmental issues concerning their integration in the network,during the design, installation, operation and upgrading stages. WG B1.19 report provides guidelines for the design of transitions between OHL and underground cables.It deals with land AC extruded cables, but some sections are applcable to DC and/or submarine and SCFF cables.One chapter is dedicated to Enviromental Impact Assessment. It presents an example of of ageneral method for the evaluation of impacts and offers a typical table of contents for an environmental evaluation report.K