Where the régies are of inter-municipal interest, they may be operated:
1° Either under the management of a commune acting, vis-à-vis the other communes, as a concessionaire;
2° Or under the management of a syndicate formed by the communes concerned.
If this syndicate is formed exclusively with a view to operating an administrative or industrial or commercial service, the communes may request that the administration of the syndicate be merged with that of the régie. In this case, the act establishing the syndicat may make changes to the rules of administration laid down by the chapitre II du titre Ier du livre II de la cinquième partie.