The Papeteries Léon Martin SAS wish to set up a biomass boiler for the supply of industrial processes and heating of its paper mill located in the commune of Engomer in Ariège, a small rural commune of 307 inhabitants. This installation will improve the energy efficiency of steam production and the environmental impact, replacing a heavy fuel oil boiler, with a power adapted to current and future thermal needs and an efficient system for treating atmospheric discharges. The operation will also significantly support a comprehensive spending reduction policy led by the family business. Actor of second transformation of the wood industry and only representative of the sector in Occitanie to be labeled "Entreprise du Patrimoine Vivant" (a mark of recognition of the State that distinguishes French companies with artisanal and industrial know-how of excellence), stationery produces from virgin fibres silk papers for the luxury sector and from recycled fibres technical and operational papers for different sectors (clothing, industry, poultry).