Temrex is a lumber producer and processor that carries out sawing, planing, and drying operations; it has an annual production of 300,000 m3. In order to recover its ash residues, Temrex engaged Activa Environnement to obtain the required authorizations from the MDDELCC. The mandate comprised ash characterization, preparation of project notices and authorization applications as well as follow-up with agricultural producers and the ministry.