Since the end of the 1990s, Thetis has supported the environmental authorization process for the Venice Airport Development Plan, on behalf of SAVE.

The company has drawn up the Environmental Impact Study for the Master Plan of Venice Marco Polo Airport to 2021, as well as the technical documentation and support for the preliminary phases for the local authorization procedures (landscape authorization, preliminary assessment of the archaeological interest, studies of environmental impact, specific studies on SCIs and other protected areas, associated with individual airport projects).
The EIA was based on a detailed analysis of the environment and modeling of noise nuisance and impacts on air quality. The studies included the identification and preliminary design of mitigation and compensation measures and monitoring measures. The EIA procedure began in September 2014 and ended in January 2016 with a positive assessment of the Italian Ministry of the Environment.
Thetis also provided technical support to SAVE in the public presentation, stakeholder consultation and meeting with local and national authorities and expert groups of evaluation commissions. Thetis was also involved in the design of the environmental monitoring programme.