This guide was compiled by the “Agence Française de Développement” (AFD) and the FrenchMinistry of Ecology, Energy, Sustainable Development and the Sea (MEEDDM).A steering committee composed of Xavier HOANG from the AFD, along with Gilles DAVID andAlexandre STRAUSS from the Ministry supervised the work in progress.The publication of this guide was assigned to CODATU. Written by Françoise METEYER ZELDINE(Consultant) in close collaboration with Laurence LAFON and Xavier GODARD, with technicalproofreading by Thierry GOUIN and Patricia VARNAISON REVOLLE from the CERTU.