Key legal question
Whether an environmental impact assessment requires complete scientific investigations for every conceivable harm, regardless of its relevance in the concrete case.
Extracted holding
No. The scope of the required investigations depends on the harms that can be expected in principle and on their likely concrete consequences.
Extracted reasoning
The court held that an EIA does not demand exhaustive scientific inquiries into every possible impairment. The decisive criterion is not the financial or technical difficulty of the studies, but the type of impacts that may reasonably be expected and their concrete effects in the case at hand.