Understanding the Carbon Numbers in a Wood EPD

Detailed technical guidance on how global warming potential and biogenic carbon are reported in the North American Softwood Lumber Environmental Product Declaration, co-published by American Wood Council and Canadian Wood Council. Provides comprehensive explanation of biogenic carbon reporting requirements per ISO 21930, including cradle-to-gate system boundaries, conservative end-of-life assumptions, and technical parameter tracking (BCRP, BCEP, BCEW values). Covers complex EPD data interpretation, GWPTRACI vs GWPBIO calculations, biogenic carbon flows throughout production stages, and relationship between embodied carbon and biogenic carbon accounting. Includes annotated diagrams and detailed calculations for understanding EPD carbon data specific to North American wood products.