sentences:  While this was the purpose of the Becquey plan of 1821 to 1822, it was only in 1832 that the state granted the concession in perpetuity to the private Magendie-Sion company, owned by Sieur Doin.The act allowing the construction of the Canal Latéral à la Garonne envisioned the provision of water from the Garonne utilising the Canal de Saint-Pierre or the Canal de Brienne.However, Sieur Doin did not agree with these commitments; the state, falling back on its rights, raised the possibility of forfeiture of the concession in a new act of 9 July 1835, which fixed new construction dates.