I have replaced an old fosse septique with a new STOC micro station d'epuration but have now discovered that when STOC removed the old fosse septique they transferred the contents of it into the new micro station. I had understood that they would have arranged for the contents of the old fosse septique to be removed. (Their quote included 250 euros for "vidange et elevement de la fosse septique actuelle".) Does anyone know if it is a problem that they transferred the old sewage into the new microstation? Thank you.