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construction sites and clearly label and monitor bins for each source separated material to ensure proper collection.

In this credit, teams are rewarded for prioritizing the salvage and/or source separation of targeted materials: clean gypsum, carpet, ceilings, and furniture. These materials have significant environmental impacts which make their diversion particularly important for reducing overall environmental harm. They also have known solutions for reuse and recycling, though participation rates tend to be low due to logistical constraints. For this reason, the direct recycling or salvaging of these targeted materials are worth an additional point in Path 4 of this credit and teams are encouraged to find recovery solutions for these materials.

SALVAGING MATERIALS

Successful salvaging begins with careful planning and requires a thorough audit of the existing materials and structures to identify which materials can be reclaimed. It is recommended to conduct an early salvage assessment during building design to determine which tools and methods will be most valuable and effective for removal and preservation.

Projects that salvage materials off-site must send materials from the job to legitimate off-site salvage and reuse vendors or markets. Destinations must be locations that either directly reuse the materials or place them into a marketplace for distribution, sale, or reuse. Materials must not be stockpiled without the intention of being cycled back into use. Stockpile locations are acceptable only if they actively work to move materials through reuse cycles and provide documentation detailing what actions will be taken if the materials remain unused for an extended period. Even with best intentions, some salvaged materials do not find a home in a new project for various reasons and ultimately get recycled or disposed. This entropy of salvaged materials is acceptable so long as the majority of materials sent for salvage are intended to remain in circulation.

Mixed C&D Materials

Mixed C&D materials or commingled waste is recyclable materials mixed in a single container that is sorted and processed at an off-site recycling facility.

Projects are required to obtain diversion rates from each commingled or mixed waste processing facility utilized. Facilities must operate legally and be regulated by state and local authorities. However, it is important to note that these authorities may not oversee diversion rates or the reporting of such rates, hence the need for certifications like Recycling Certification or equivalent (as determined by USGBC) to ensure accurate tracking and reporting of diversion rates. Project teams are encouraged to use facilities verified by a third party to achieve higher

U.S. Green Building Council LEED v5 Reference Guide for Interior Design and Construction, April 2025 Launch Edition 283