Which LEED credit encourages projects to use a percentage of salvaged materials?

The correct answer is Building Life Cycle Impact Reduction. This credit emphasizes the importance of utilizing salvaged materials in construction projects, which helps to minimize the environmental impact associated with new material production. By promoting the reuse of materials, this credit encourages a sustainable approach that not only conserves resources but also reduces waste and energy consumption associated with material extraction, manufacturing, and transportation.

In the context of LEED, valuing salvaged materials aligns with the broader goal of reducing the overall life cycle impacts of buildings. It reflects an understanding of the resource intensity of the construction industry and pushes for strategies that extend the lifespan of existing materials.

The other options focus on different aspects. Construction Waste Management involves strategies for managing and diverting waste from landfills rather than specifically on the use of salvaged materials. Responsible Sourcing of Materials focuses on sourcing suppliers and materials that are ethically produced and sustainable, rather than specifically salvaged. Regional Materials addresses the use of materials that are sourced locally but does not directly pertain to the reuse of salvaged items. Thus, Building Life Cycle Impact Reduction is the most fitting choice for encouraging the use of a percentage of salvaged materials.