The Complaints Mechanism (EIB-CM) registered three complaints between July and September 2021 (SG/E/2021/12, SG/E/2021/15 and SG/E/2021/17) regarding a component of the “Flood protection measures” project in the catchment area of the Erasinos stream (hereinafter “the Erasinos sub-project”). The project co-financed by the EIB is located in the Attica region of Greece. In December 2021, the EIB-CM issued one initial assessment report for all three cases given major overlap in the allegations made by the complainants. The report established the following allegations: 1. Non-compliance of the Erasinos sub-project with national law: failure to correctly classify the protected areas concerned, failure to comply with the provisions of national law, failure to assess the impacts on an endemic and protected species of fish, and financial compensation for resettlement and start of works before the necessary documentation was obtained. 2. Non-compliance of the Erasinos sub-project with EU law: mainly the Environmental Impact Assessment Directive, the Habitats Directive, the Water Framework Directive and the Floods Directive. 3. Failure of the EIB to adequately assess the sub-project and comply with the EIB’s environmental and social standards and other commitments in the area of environment.