855773520-LEED-v5-ID-C-Reference-Guide-Launch-Edition-1 - Page 293

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new products. To obtain alternative daily cover (ADC) values from a mixed recycling or certified facility, request detailed documentation of material processing and their average ADC rates per month. If they do not have the ADC rates monthly, then quarterly, semi-annual, or annual rates are acceptable.

Excluding Hazardous Waste, Land-clearing Debris, Soil, and Landscaping Materials

Hazardous waste, land-clearing debris, soil, and landscaping materials must be excluded from diversion totals. Soil is excluded because clean soil is rarely landfilled due to its high cost and other suitable uses, which could skew results, while contaminated soil is typically classified as hazardous and managed under strict regulations, often requiring specialized disposal. Similarly, land-clearing debris, such as rocks and trees, is generally not landfilled due to its weight and is commonly diverted. Hazardous waste must follow regulatory guidelines for safe handling, disposal in lined landfills, or destruction to prevent environmental harm. This includes proper identification, labeling, and containment of hazardous materials, as well as transportation by certified handlers to facilities equipped to manage such waste.

Equation 1. Diversion rate

[𝑇] [𝑇][ 𝑤] [𝑤] [𝑤][ 𝑑] [𝑑] [𝑑] [𝑑] [ 𝑓] [𝑓] 𝑙 𝑙 𝑙 𝑙 𝐷 𝑣𝑣𝑒 𝑒 𝑒 𝑟 𝑟 = [𝑇] 𝑇 𝑇 𝑇 𝑤 𝑤 𝑤 𝑝 𝑝 𝑝 𝑝 𝑏 𝑝 𝑝 𝑝 𝑝 [ × 100 ]

SOURCE-SEPARATED MATERIAL

Project teams must identify materials that will be diverted from landfill and incineration facilities. Common C&D waste materials include: concrete, metals, brick, wood, and cardboard. Depending on the project’s scope of work, additional sources may include carpet, ceilings, gypsum board, and furniture.

The project must account for source separation or salvage as a percentage of the total diversion in the achievement thresholds in credit Paths 1-3. This represents a percentage of the overall diversion amount for the project and is not in addition to the overall diversion rate.

Teams are recommended to target source separation where each homogeneous material is collected and sent to a specific recycling facility (or is sent for reuse). Source separated materials in this way are not mixed with other materials, thereby significantly reducing the contamination in recycling streams and leading to higher diversion rates overall for those recovered materials. Source separation involves segregating recyclable materials from mixed waste at the point of generation. This practice involves sorting materials such as metals, wood, and gypsum directly at the construction or demolition site before they are commingled in a central recycling area or bin. Contractors should consider setting up dedicated areas on

U.S. Green Building Council LEED v5 Reference Guide for Interior Design and Construction, April 2025 Launch Edition 282