Since the construction of the first gas pipeline through Switzerland, knowledge of ecological construction has increased enormously. When constructing the new pipeline, environmentally compatible technologies were utilized, as it was necessary to protect waters in general as well as plants and animals. The carefully initiated re-cultivation measures carried out following laying of the pipeline, have restored the land to its original state.

The pipeline route was selected from various alternatives taking into account the aspects of environmental compatibility, transport safety and technical-economic feasibility. During the course of the expansion of the transport system Transitgas AG encouraged the use of micro-tunneling technology (trenchless pipelay) which was instrumental in the crossing of numerous ecologically sensitive areas.

The agreements reached with the canton authorities responsible for issuing the permits, included upgrading the moors in the communities of Sörenberg (LU) and Hofstetten (BE) and re-naturalisation of an area in the vicinity of the Birs river crossing (BL). These measures were taken to resettle beaver colonies.