Project Participants must demonstrate that their project makes use of surplus biomass for each type of biomass resource used. For small-scale activities, Project Participants can do this once, before the event, in time for validation. For large-scale activities, Project Participants must do this once in time for validation and then every time they conduct verifications (e.g. as part of the Sustainability Monitoring Plan). For more information, please see the Activity Guidance applicable to your project.