CPV code 90711400 designates Environmental Impact Assessment (EIA) services other than for construction in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
90711400 is a leaf code — the most specific level of its branch — so it can be used directly as the main CPV code of a contract notice. If it does not quite fit, check the neighbouring codes under 90711000 (Environmental impact assessment other than for construction).