Article L1111-9 of the French General Code of Local Authorities
I. – The competences of territorial authorities whose exercise requires the support of several territorial authorities or groupings of territorial authorities are implemented in accordance with the following rules: 1° Delegations of competence are organised within the framework of the territorial agreement for concerted exercise provided for in V of Article L. 1111-9-1; 2° The minimum participation of the project owner, provided for in the second paragraph of III of…