The plan to create a reference perimeter is approved by the regional prefect or by the departmental prefect when all the municipalities in the perimeter are in the same department. It is then submitted for opinion to the manager, the communes or public establishments for inter-communal cooperation, the territorial chambers of commerce and industry, the chambers of trade and craft and the chambers of agriculture in whose territory or jurisdiction it is located, in accordance with procedures that are set by order of the ministers responsible for trade and agriculture.
The decree referred to in the first paragraph of Article L. 761-4 sets the limits and duration of the reference perimeter. This period may not exceed thirty years.